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-rw-r--r--widget/nsBaseWidget.cpp3290
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diff --git a/widget/nsBaseWidget.cpp b/widget/nsBaseWidget.cpp
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+++ b/widget/nsBaseWidget.cpp
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+
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsBaseWidget.h"
+
+#include <utility>
+
+#include "BasicLayers.h"
+#include "ClientLayerManager.h"
+#include "FrameLayerBuilder.h"
+#include "GLConsts.h"
+#include "InputData.h"
+#include "LiveResizeListener.h"
+#include "TouchEvents.h"
+#include "WritingModes.h"
+#include "X11UndefineNone.h"
+#include "base/thread.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/GlobalKeyListener.h"
+#include "mozilla/IMEStateManager.h"
+#include "mozilla/MouseEvents.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/StaticPrefs_apz.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/StaticPrefs_layers.h"
+#include "mozilla/StaticPrefs_layout.h"
+#include "mozilla/TextEventDispatcher.h"
+#include "mozilla/TextEventDispatcherListener.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "mozilla/VsyncDispatcher.h"
+#include "mozilla/dom/BrowserParent.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/GPUProcessManager.h"
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/layers/APZCCallbackHelper.h"
+#include "mozilla/layers/APZEventState.h"
+#include "mozilla/layers/APZInputBridge.h"
+#include "mozilla/layers/APZThreadUtils.h"
+#include "mozilla/layers/ChromeProcessController.h"
+#include "mozilla/layers/Compositor.h"
+#include "mozilla/layers/CompositorBridgeChild.h"
+#include "mozilla/layers/CompositorBridgeParent.h"
+#include "mozilla/layers/CompositorOptions.h"
+#include "mozilla/layers/IAPZCTreeManager.h"
+#include "mozilla/layers/ImageBridgeChild.h"
+#include "mozilla/layers/InputAPZContext.h"
+#include "mozilla/layers/PLayerTransactionChild.h"
+#include "mozilla/layers/WebRenderLayerManager.h"
+#include "mozilla/webrender/WebRenderTypes.h"
+#include "npapi.h"
+#include "nsAppDirectoryServiceDefs.h"
+#include "nsCOMPtr.h"
+#include "nsContentUtils.h"
+#include "nsDeviceContext.h"
+#include "nsGfxCIID.h"
+#include "nsIAppWindow.h"
+#include "nsIBaseWindow.h"
+#include "nsIContent.h"
+#include "nsIKeyEventInPluginCallback.h"
+#include "nsIScreenManager.h"
+#include "nsISimpleEnumerator.h"
+#include "nsIWidgetListener.h"
+#include "nsRefPtrHashtable.h"
+#include "nsServiceManagerUtils.h"
+#include "nsWidgetsCID.h"
+#include "nsXULPopupManager.h"
+#include "prdtoa.h"
+#include "prenv.h"
+#ifdef ACCESSIBILITY
+# include "nsAccessibilityService.h"
+#endif
+#include "gfxConfig.h"
+#include "gfxUtils.h" // for ToDeviceColor
+#include "mozilla/layers/CompositorSession.h"
+#include "VRManagerChild.h"
+#include "gfxConfig.h"
+#include "nsView.h"
+#include "nsViewManager.h"
+
+#ifdef DEBUG
+# include "nsIObserver.h"
+
+static void debug_RegisterPrefCallbacks();
+
+#endif
+
+#ifdef NOISY_WIDGET_LEAKS
+static int32_t gNumWidgets;
+#endif
+
+#ifdef XP_MACOSX
+# include "nsCocoaFeatures.h"
+#endif
+
+#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
+static nsRefPtrHashtable<nsVoidPtrHashKey, nsIWidget>* sPluginWidgetList;
+#endif
+
+nsIRollupListener* nsBaseWidget::gRollupListener = nullptr;
+
+using namespace mozilla::dom;
+using namespace mozilla::layers;
+using namespace mozilla::ipc;
+using namespace mozilla::widget;
+using namespace mozilla;
+
+// Async pump timer during injected long touch taps
+#define TOUCH_INJECT_PUMP_TIMER_MSEC 50
+#define TOUCH_INJECT_LONG_TAP_DEFAULT_MSEC 1500
+int32_t nsIWidget::sPointerIdCounter = 0;
+
+// Some statics from nsIWidget.h
+/*static*/
+uint64_t AutoObserverNotifier::sObserverId = 0;
+/*static*/ nsDataHashtable<nsUint64HashKey, nsCOMPtr<nsIObserver>>
+ AutoObserverNotifier::sSavedObservers;
+
+// The maximum amount of time to let the EnableDragDrop runnable wait in the
+// idle queue before timing out and moving it to the regular queue. Value is in
+// milliseconds.
+const uint32_t kAsyncDragDropTimeout = 1000;
+
+namespace mozilla::widget {
+
+void IMENotification::SelectionChangeDataBase::SetWritingMode(
+ const WritingMode& aWritingMode) {
+ mWritingMode = aWritingMode.mWritingMode.bits;
+}
+
+WritingMode IMENotification::SelectionChangeDataBase::GetWritingMode() const {
+ return WritingMode(mWritingMode);
+}
+
+} // namespace mozilla::widget
+
+NS_IMPL_ISUPPORTS(nsBaseWidget, nsIWidget, nsISupportsWeakReference)
+
+//-------------------------------------------------------------------------
+//
+// nsBaseWidget constructor
+//
+//-------------------------------------------------------------------------
+
+nsBaseWidget::nsBaseWidget()
+ : mWidgetListener(nullptr),
+ mAttachedWidgetListener(nullptr),
+ mPreviouslyAttachedWidgetListener(nullptr),
+ mLayerManager(nullptr),
+ mCompositorVsyncDispatcher(nullptr),
+ mCursor(eCursor_standard),
+ mBorderStyle(eBorderStyle_none),
+ mBounds(0, 0, 0, 0),
+ mOriginalBounds(nullptr),
+ mClipRectCount(0),
+ mSizeMode(nsSizeMode_Normal),
+ mIsTiled(false),
+ mPopupLevel(ePopupLevelTop),
+ mPopupType(ePopupTypeAny),
+ mHasRemoteContent(false),
+ mFissionWindow(false),
+ mUpdateCursor(true),
+ mUseAttachedEvents(false),
+ mIMEHasFocus(false),
+ mIMEHasQuit(false),
+ mIsFullyOccluded(false) {
+#ifdef NOISY_WIDGET_LEAKS
+ gNumWidgets++;
+ printf("WIDGETS+ = %d\n", gNumWidgets);
+#endif
+
+#ifdef DEBUG
+ debug_RegisterPrefCallbacks();
+#endif
+
+#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
+ if (!sPluginWidgetList) {
+ sPluginWidgetList = new nsRefPtrHashtable<nsVoidPtrHashKey, nsIWidget>();
+ }
+#endif
+ mShutdownObserver = new WidgetShutdownObserver(this);
+}
+
+NS_IMPL_ISUPPORTS(WidgetShutdownObserver, nsIObserver)
+
+WidgetShutdownObserver::WidgetShutdownObserver(nsBaseWidget* aWidget)
+ : mWidget(aWidget), mRegistered(false) {
+ Register();
+}
+
+WidgetShutdownObserver::~WidgetShutdownObserver() {
+ // No need to call Unregister(), we can't be destroyed until nsBaseWidget
+ // gets torn down. The observer service and nsBaseWidget have a ref on us
+ // so nsBaseWidget has to call Unregister and then clear its ref.
+}
+
+NS_IMETHODIMP
+WidgetShutdownObserver::Observe(nsISupports* aSubject, const char* aTopic,
+ const char16_t* aData) {
+ if (!mWidget) {
+ return NS_OK;
+ }
+ if (!strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
+ RefPtr<nsBaseWidget> widget(mWidget);
+ widget->Shutdown();
+ } else if (!strcmp(aTopic, "quit-application")) {
+ RefPtr<nsBaseWidget> widget(mWidget);
+ widget->QuitIME();
+ }
+ return NS_OK;
+}
+
+void WidgetShutdownObserver::Register() {
+ if (!mRegistered) {
+ mRegistered = true;
+ nsContentUtils::RegisterShutdownObserver(this);
+
+#ifndef MOZ_WIDGET_ANDROID
+ // The primary purpose of observing quit-application is
+ // to avoid leaking a widget on Windows when nothing else
+ // breaks the circular reference between the widget and
+ // TSFTextStore. However, our Android IME code crashes if
+ // doing this on Android, so let's not do this on Android.
+ // Doing this on Gtk and Mac just in case.
+ nsCOMPtr<nsIObserverService> observerService =
+ mozilla::services::GetObserverService();
+ if (observerService) {
+ observerService->AddObserver(this, "quit-application", false);
+ }
+#endif
+ }
+}
+
+void WidgetShutdownObserver::Unregister() {
+ if (mRegistered) {
+ mWidget = nullptr;
+
+#ifndef MOZ_WIDGET_ANDROID
+ nsCOMPtr<nsIObserverService> observerService =
+ mozilla::services::GetObserverService();
+ if (observerService) {
+ observerService->RemoveObserver(this, "quit-application");
+ }
+#endif
+
+ nsContentUtils::UnregisterShutdownObserver(this);
+ mRegistered = false;
+ }
+}
+
+void nsBaseWidget::Shutdown() {
+ NotifyLiveResizeStopped();
+ RevokeTransactionIdAllocator();
+ DestroyCompositor();
+ FreeShutdownObserver();
+#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
+ if (sPluginWidgetList) {
+ delete sPluginWidgetList;
+ sPluginWidgetList = nullptr;
+ }
+#endif
+}
+
+void nsBaseWidget::QuitIME() {
+ IMEStateManager::WidgetOnQuit(this);
+ this->mIMEHasQuit = true;
+}
+
+void nsBaseWidget::DestroyCompositor() {
+ // We release this before releasing the compositor, since it may hold the
+ // last reference to our ClientLayerManager. ClientLayerManager's dtor can
+ // trigger a paint, creating a new compositor, and we don't want to re-use
+ // the old vsync dispatcher.
+ if (mCompositorVsyncDispatcher) {
+ MOZ_ASSERT(mCompositorVsyncDispatcherLock.get());
+
+ MutexAutoLock lock(*mCompositorVsyncDispatcherLock.get());
+ mCompositorVsyncDispatcher->Shutdown();
+ mCompositorVsyncDispatcher = nullptr;
+ }
+
+ // The compositor shutdown sequence looks like this:
+ // 1. CompositorSession calls CompositorBridgeChild::Destroy.
+ // 2. CompositorBridgeChild synchronously sends WillClose.
+ // 3. CompositorBridgeParent releases some resources (such as the layer
+ // manager, compositor, and widget).
+ // 4. CompositorBridgeChild::Destroy returns.
+ // 5. Asynchronously, CompositorBridgeParent::ActorDestroy will fire on the
+ // compositor thread when the I/O thread closes the IPC channel.
+ // 6. Step 5 will schedule DeferredDestroy on the compositor thread, which
+ // releases the reference CompositorBridgeParent holds to itself.
+ //
+ // When CompositorSession::Shutdown returns, we assume the compositor is gone
+ // or will be gone very soon.
+ if (mCompositorSession) {
+ ReleaseContentController();
+ mAPZC = nullptr;
+ SetCompositorWidgetDelegate(nullptr);
+ mCompositorBridgeChild = nullptr;
+
+ // XXX CompositorBridgeChild and CompositorBridgeParent might be re-created
+ // in ClientLayerManager destructor. See bug 1133426.
+ RefPtr<CompositorSession> session = std::move(mCompositorSession);
+ session->Shutdown();
+ }
+}
+
+// This prevents the layer manager from starting a new transaction during
+// shutdown.
+void nsBaseWidget::RevokeTransactionIdAllocator() {
+ if (!mLayerManager) {
+ return;
+ }
+ mLayerManager->SetTransactionIdAllocator(nullptr);
+}
+
+void nsBaseWidget::ReleaseContentController() {
+ if (mRootContentController) {
+ mRootContentController->Destroy();
+ mRootContentController = nullptr;
+ }
+}
+
+void nsBaseWidget::DestroyLayerManager() {
+ if (mLayerManager) {
+ mLayerManager->Destroy();
+ mLayerManager = nullptr;
+ }
+ DestroyCompositor();
+}
+
+void nsBaseWidget::OnRenderingDeviceReset() { DestroyLayerManager(); }
+
+void nsBaseWidget::FreeShutdownObserver() {
+ if (mShutdownObserver) {
+ mShutdownObserver->Unregister();
+ }
+ mShutdownObserver = nullptr;
+}
+
+//-------------------------------------------------------------------------
+//
+// nsBaseWidget destructor
+//
+//-------------------------------------------------------------------------
+
+nsBaseWidget::~nsBaseWidget() {
+ IMEStateManager::WidgetDestroyed(this);
+
+ if (mLayerManager) {
+ if (BasicLayerManager* mgr = mLayerManager->AsBasicLayerManager()) {
+ mgr->ClearRetainerWidget();
+ }
+ }
+
+ FreeShutdownObserver();
+ RevokeTransactionIdAllocator();
+ DestroyLayerManager();
+
+#ifdef NOISY_WIDGET_LEAKS
+ gNumWidgets--;
+ printf("WIDGETS- = %d\n", gNumWidgets);
+#endif
+
+ delete mOriginalBounds;
+}
+
+//-------------------------------------------------------------------------
+//
+// Basic create.
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::BaseCreate(nsIWidget* aParent, nsWidgetInitData* aInitData) {
+ // keep a reference to the device context
+ if (nullptr != aInitData) {
+ mWindowType = aInitData->mWindowType;
+ mBorderStyle = aInitData->mBorderStyle;
+ mPopupLevel = aInitData->mPopupLevel;
+ mPopupType = aInitData->mPopupHint;
+ mHasRemoteContent = aInitData->mHasRemoteContent;
+ mFissionWindow = aInitData->mFissionWindow;
+ }
+
+ if (aParent) {
+ aParent->AddChild(this);
+ }
+}
+
+//-------------------------------------------------------------------------
+//
+// Accessor functions to get/set the client data
+//
+//-------------------------------------------------------------------------
+
+nsIWidgetListener* nsBaseWidget::GetWidgetListener() { return mWidgetListener; }
+
+void nsBaseWidget::SetWidgetListener(nsIWidgetListener* aWidgetListener) {
+ mWidgetListener = aWidgetListener;
+}
+
+already_AddRefed<nsIWidget> nsBaseWidget::CreateChild(
+ const LayoutDeviceIntRect& aRect, nsWidgetInitData* aInitData,
+ bool aForceUseIWidgetParent) {
+ nsIWidget* parent = this;
+ nsNativeWidget nativeParent = nullptr;
+
+ if (!aForceUseIWidgetParent) {
+ // Use only either parent or nativeParent, not both, to match
+ // existing code. Eventually Create() should be divested of its
+ // nativeWidget parameter.
+ nativeParent = parent ? parent->GetNativeData(NS_NATIVE_WIDGET) : nullptr;
+ parent = nativeParent ? nullptr : parent;
+ MOZ_ASSERT(!parent || !nativeParent, "messed up logic");
+ }
+
+ nsCOMPtr<nsIWidget> widget;
+ if (aInitData && aInitData->mWindowType == eWindowType_popup) {
+ widget = AllocateChildPopupWidget();
+ } else {
+ widget = nsIWidget::CreateChildWindow();
+ }
+
+ if (widget &&
+ NS_SUCCEEDED(widget->Create(parent, nativeParent, aRect, aInitData))) {
+ return widget.forget();
+ }
+
+ return nullptr;
+}
+
+// Attach a view to our widget which we'll send events to.
+void nsBaseWidget::AttachViewToTopLevel(bool aUseAttachedEvents) {
+ NS_ASSERTION((mWindowType == eWindowType_toplevel ||
+ mWindowType == eWindowType_dialog ||
+ mWindowType == eWindowType_invisible ||
+ mWindowType == eWindowType_child),
+ "Can't attach to window of that type");
+
+ mUseAttachedEvents = aUseAttachedEvents;
+}
+
+nsIWidgetListener* nsBaseWidget::GetAttachedWidgetListener() {
+ return mAttachedWidgetListener;
+}
+
+nsIWidgetListener* nsBaseWidget::GetPreviouslyAttachedWidgetListener() {
+ return mPreviouslyAttachedWidgetListener;
+}
+
+void nsBaseWidget::SetPreviouslyAttachedWidgetListener(
+ nsIWidgetListener* aListener) {
+ mPreviouslyAttachedWidgetListener = aListener;
+}
+
+void nsBaseWidget::SetAttachedWidgetListener(nsIWidgetListener* aListener) {
+ mAttachedWidgetListener = aListener;
+}
+
+//-------------------------------------------------------------------------
+//
+// Close this nsBaseWidget
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::Destroy() {
+ // Just in case our parent is the only ref to us
+ nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
+ // disconnect from the parent
+ nsIWidget* parent = GetParent();
+ if (parent) {
+ parent->RemoveChild(this);
+ }
+
+#if defined(XP_WIN)
+ // Allow our scroll capture container to be cleaned up, if we have one.
+ mScrollCaptureContainer = nullptr;
+#endif
+}
+
+//-------------------------------------------------------------------------
+//
+// Get this nsBaseWidget parent
+//
+//-------------------------------------------------------------------------
+nsIWidget* nsBaseWidget::GetParent(void) { return nullptr; }
+
+//-------------------------------------------------------------------------
+//
+// Get this nsBaseWidget top level widget
+//
+//-------------------------------------------------------------------------
+nsIWidget* nsBaseWidget::GetTopLevelWidget() {
+ nsIWidget *topLevelWidget = nullptr, *widget = this;
+ while (widget) {
+ topLevelWidget = widget;
+ widget = widget->GetParent();
+ }
+ return topLevelWidget;
+}
+
+//-------------------------------------------------------------------------
+//
+// Get this nsBaseWidget's top (non-sheet) parent (if it's a sheet)
+//
+//-------------------------------------------------------------------------
+nsIWidget* nsBaseWidget::GetSheetWindowParent(void) { return nullptr; }
+
+float nsBaseWidget::GetDPI() { return 96.0f; }
+
+CSSToLayoutDeviceScale nsIWidget::GetDefaultScale() {
+ double devPixelsPerCSSPixel = StaticPrefs::layout_css_devPixelsPerPx();
+
+ if (devPixelsPerCSSPixel <= 0.0) {
+ devPixelsPerCSSPixel = GetDefaultScaleInternal();
+ }
+
+ return CSSToLayoutDeviceScale(devPixelsPerCSSPixel);
+}
+
+//-------------------------------------------------------------------------
+//
+// Add a child to the list of children
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::AddChild(nsIWidget* aChild) {
+ MOZ_ASSERT(!aChild->GetNextSibling() && !aChild->GetPrevSibling(),
+ "aChild not properly removed from its old child list");
+
+ if (!mFirstChild) {
+ mFirstChild = mLastChild = aChild;
+ } else {
+ // append to the list
+ MOZ_ASSERT(mLastChild);
+ MOZ_ASSERT(!mLastChild->GetNextSibling());
+ mLastChild->SetNextSibling(aChild);
+ aChild->SetPrevSibling(mLastChild);
+ mLastChild = aChild;
+ }
+}
+
+//-------------------------------------------------------------------------
+//
+// Remove a child from the list of children
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::RemoveChild(nsIWidget* aChild) {
+#ifdef DEBUG
+# ifdef XP_MACOSX
+ // nsCocoaWindow doesn't implement GetParent, so in that case parent will be
+ // null and we'll just have to do without this assertion.
+ nsIWidget* parent = aChild->GetParent();
+ NS_ASSERTION(!parent || parent == this, "Not one of our kids!");
+# else
+ MOZ_RELEASE_ASSERT(aChild->GetParent() == this, "Not one of our kids!");
+# endif
+#endif
+
+ if (mLastChild == aChild) {
+ mLastChild = mLastChild->GetPrevSibling();
+ }
+ if (mFirstChild == aChild) {
+ mFirstChild = mFirstChild->GetNextSibling();
+ }
+
+ // Now remove from the list. Make sure that we pass ownership of the tail
+ // of the list correctly before we have aChild let go of it.
+ nsIWidget* prev = aChild->GetPrevSibling();
+ nsIWidget* next = aChild->GetNextSibling();
+ if (prev) {
+ prev->SetNextSibling(next);
+ }
+ if (next) {
+ next->SetPrevSibling(prev);
+ }
+
+ aChild->SetNextSibling(nullptr);
+ aChild->SetPrevSibling(nullptr);
+}
+
+//-------------------------------------------------------------------------
+//
+// Sets widget's position within its parent's child list.
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::SetZIndex(int32_t aZIndex) {
+ // Hold a ref to ourselves just in case, since we're going to remove
+ // from our parent.
+ nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
+
+ mZIndex = aZIndex;
+
+ // reorder this child in its parent's list.
+ auto* parent = static_cast<nsBaseWidget*>(GetParent());
+ if (parent) {
+ parent->RemoveChild(this);
+ // Scope sib outside the for loop so we can check it afterward
+ nsIWidget* sib = parent->GetFirstChild();
+ for (; sib; sib = sib->GetNextSibling()) {
+ int32_t childZIndex = GetZIndex();
+ if (aZIndex < childZIndex) {
+ // Insert ourselves before sib
+ nsIWidget* prev = sib->GetPrevSibling();
+ mNextSibling = sib;
+ mPrevSibling = prev;
+ sib->SetPrevSibling(this);
+ if (prev) {
+ prev->SetNextSibling(this);
+ } else {
+ NS_ASSERTION(sib == parent->mFirstChild, "Broken child list");
+ // We've taken ownership of sib, so it's safe to have parent let
+ // go of it
+ parent->mFirstChild = this;
+ }
+ PlaceBehind(eZPlacementBelow, sib, false);
+ break;
+ }
+ }
+ // were we added to the list?
+ if (!sib) {
+ parent->AddChild(this);
+ }
+ }
+}
+
+//-------------------------------------------------------------------------
+//
+// Maximize, minimize or restore the window. The BaseWidget implementation
+// merely stores the state.
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::SetSizeMode(nsSizeMode aMode) {
+ MOZ_ASSERT(aMode == nsSizeMode_Normal || aMode == nsSizeMode_Minimized ||
+ aMode == nsSizeMode_Maximized || aMode == nsSizeMode_Fullscreen);
+ mSizeMode = aMode;
+}
+
+void nsBaseWidget::GetWorkspaceID(nsAString& workspaceID) {
+ workspaceID.Truncate();
+}
+
+void nsBaseWidget::MoveToWorkspace(const nsAString& workspaceID) {
+ // Noop.
+}
+
+//-------------------------------------------------------------------------
+//
+// Get this component cursor
+//
+//-------------------------------------------------------------------------
+
+void nsBaseWidget::SetCursor(nsCursor aCursor, imgIContainer*, uint32_t,
+ uint32_t) {
+ // We don't support the cursor image.
+ mCursor = aCursor;
+}
+
+//-------------------------------------------------------------------------
+//
+// Window transparency methods
+//
+//-------------------------------------------------------------------------
+
+void nsBaseWidget::SetTransparencyMode(nsTransparencyMode aMode) {}
+
+nsTransparencyMode nsBaseWidget::GetTransparencyMode() {
+ return eTransparencyOpaque;
+}
+
+bool nsBaseWidget::IsWindowClipRegionEqual(
+ const nsTArray<LayoutDeviceIntRect>& aRects) {
+ return mClipRects && mClipRectCount == aRects.Length() &&
+ memcmp(mClipRects.get(), aRects.Elements(),
+ sizeof(LayoutDeviceIntRect) * mClipRectCount) == 0;
+}
+
+void nsBaseWidget::StoreWindowClipRegion(
+ const nsTArray<LayoutDeviceIntRect>& aRects) {
+ mClipRectCount = aRects.Length();
+ mClipRects = MakeUnique<LayoutDeviceIntRect[]>(mClipRectCount);
+ if (mClipRects) {
+ memcpy(mClipRects.get(), aRects.Elements(),
+ sizeof(LayoutDeviceIntRect) * mClipRectCount);
+ }
+}
+
+void nsBaseWidget::GetWindowClipRegion(nsTArray<LayoutDeviceIntRect>* aRects) {
+ if (mClipRects) {
+ aRects->AppendElements(mClipRects.get(), mClipRectCount);
+ } else {
+ aRects->AppendElement(
+ LayoutDeviceIntRect(0, 0, mBounds.Width(), mBounds.Height()));
+ }
+}
+
+const LayoutDeviceIntRegion nsBaseWidget::RegionFromArray(
+ const nsTArray<LayoutDeviceIntRect>& aRects) {
+ LayoutDeviceIntRegion region;
+ for (uint32_t i = 0; i < aRects.Length(); ++i) {
+ region.Or(region, aRects[i]);
+ }
+ return region;
+}
+
+void nsBaseWidget::ArrayFromRegion(const LayoutDeviceIntRegion& aRegion,
+ nsTArray<LayoutDeviceIntRect>& aRects) {
+ for (auto iter = aRegion.RectIter(); !iter.Done(); iter.Next()) {
+ aRects.AppendElement(iter.Get());
+ }
+}
+
+nsresult nsBaseWidget::SetWindowClipRegion(
+ const nsTArray<LayoutDeviceIntRect>& aRects, bool aIntersectWithExisting) {
+ if (!aIntersectWithExisting) {
+ StoreWindowClipRegion(aRects);
+ } else {
+ // get current rects
+ nsTArray<LayoutDeviceIntRect> currentRects;
+ GetWindowClipRegion(&currentRects);
+ // create region from them
+ LayoutDeviceIntRegion currentRegion = RegionFromArray(currentRects);
+ // create region from new rects
+ LayoutDeviceIntRegion newRegion = RegionFromArray(aRects);
+ // intersect regions
+ LayoutDeviceIntRegion intersection;
+ intersection.And(currentRegion, newRegion);
+ // create int rect array from intersection
+ nsTArray<LayoutDeviceIntRect> rects;
+ ArrayFromRegion(intersection, rects);
+ // store
+ StoreWindowClipRegion(rects);
+ }
+ return NS_OK;
+}
+
+/* virtual */
+void nsBaseWidget::PerformFullscreenTransition(FullscreenTransitionStage aStage,
+ uint16_t aDuration,
+ nsISupports* aData,
+ nsIRunnable* aCallback) {
+ MOZ_ASSERT_UNREACHABLE(
+ "Should never call PerformFullscreenTransition on nsBaseWidget");
+}
+
+//-------------------------------------------------------------------------
+//
+// Put the window into full-screen mode
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::InfallibleMakeFullScreen(bool aFullScreen,
+ nsIScreen* aScreen) {
+ HideWindowChrome(aFullScreen);
+
+ if (aFullScreen) {
+ if (!mOriginalBounds) {
+ mOriginalBounds = new LayoutDeviceIntRect();
+ }
+ *mOriginalBounds = GetScreenBounds();
+
+ // Move to top-left corner of screen and size to the screen dimensions
+ nsCOMPtr<nsIScreen> screen = aScreen;
+ if (!screen) {
+ screen = GetWidgetScreen();
+ }
+ if (screen) {
+ int32_t left, top, width, height;
+ if (NS_SUCCEEDED(
+ screen->GetRectDisplayPix(&left, &top, &width, &height))) {
+ Resize(left, top, width, height, true);
+ }
+ }
+ } else if (mOriginalBounds) {
+ if (BoundsUseDesktopPixels()) {
+ DesktopRect deskRect = *mOriginalBounds / GetDesktopToDeviceScale();
+ Resize(deskRect.X(), deskRect.Y(), deskRect.Width(), deskRect.Height(),
+ true);
+ } else {
+ Resize(mOriginalBounds->X(), mOriginalBounds->Y(),
+ mOriginalBounds->Width(), mOriginalBounds->Height(), true);
+ }
+ }
+}
+
+nsresult nsBaseWidget::MakeFullScreen(bool aFullScreen, nsIScreen* aScreen) {
+ InfallibleMakeFullScreen(aFullScreen, aScreen);
+ return NS_OK;
+}
+
+nsBaseWidget::AutoLayerManagerSetup::AutoLayerManagerSetup(
+ nsBaseWidget* aWidget, gfxContext* aTarget, BufferMode aDoubleBuffering,
+ ScreenRotation aRotation)
+ : mWidget(aWidget) {
+ LayerManager* lm = mWidget->GetLayerManager();
+ NS_ASSERTION(
+ !lm || lm->GetBackendType() == LayersBackend::LAYERS_BASIC,
+ "AutoLayerManagerSetup instantiated for non-basic layer backend!");
+ if (lm) {
+ mLayerManager = lm->AsBasicLayerManager();
+ if (mLayerManager) {
+ mLayerManager->SetDefaultTarget(aTarget);
+ mLayerManager->SetDefaultTargetConfiguration(aDoubleBuffering, aRotation);
+ }
+ }
+}
+
+nsBaseWidget::AutoLayerManagerSetup::~AutoLayerManagerSetup() {
+ if (mLayerManager) {
+ mLayerManager->SetDefaultTarget(nullptr);
+ mLayerManager->SetDefaultTargetConfiguration(
+ mozilla::layers::BufferMode::BUFFER_NONE, ROTATION_0);
+ }
+}
+
+bool nsBaseWidget::IsSmallPopup() const {
+ return mWindowType == eWindowType_popup && mPopupType != ePopupTypePanel;
+}
+
+bool nsBaseWidget::ComputeShouldAccelerate() {
+ return gfx::gfxConfig::IsEnabled(gfx::Feature::HW_COMPOSITING) &&
+ WidgetTypeSupportsAcceleration();
+}
+
+bool nsBaseWidget::UseAPZ() {
+ return (gfxPlatform::AsyncPanZoomEnabled() &&
+ (WindowType() == eWindowType_toplevel ||
+ WindowType() == eWindowType_child ||
+ (WindowType() == eWindowType_popup && HasRemoteContent() &&
+ StaticPrefs::apz_popups_enabled())));
+}
+
+void nsBaseWidget::CreateCompositor() {
+ LayoutDeviceIntRect rect = GetBounds();
+ CreateCompositor(rect.Width(), rect.Height());
+}
+
+already_AddRefed<GeckoContentController>
+nsBaseWidget::CreateRootContentController() {
+ RefPtr<GeckoContentController> controller =
+ new ChromeProcessController(this, mAPZEventState, mAPZC);
+ return controller.forget();
+}
+
+void nsBaseWidget::ConfigureAPZCTreeManager() {
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(mAPZC);
+
+ ConfigureAPZControllerThread();
+
+ float dpi = GetDPI();
+ // On Android the main thread is not the controller thread
+ APZThreadUtils::RunOnControllerThread(
+ NewRunnableMethod<float>("layers::IAPZCTreeManager::SetDPI", mAPZC,
+ &IAPZCTreeManager::SetDPI, dpi));
+
+ if (StaticPrefs::apz_keyboard_enabled_AtStartup()) {
+ KeyboardMap map = RootWindowGlobalKeyListener::CollectKeyboardShortcuts();
+ // On Android the main thread is not the controller thread
+ APZThreadUtils::RunOnControllerThread(NewRunnableMethod<KeyboardMap>(
+ "layers::IAPZCTreeManager::SetKeyboardMap", mAPZC,
+ &IAPZCTreeManager::SetKeyboardMap, map));
+ }
+
+ RefPtr<IAPZCTreeManager> treeManager = mAPZC; // for capture by the lambdas
+
+ ContentReceivedInputBlockCallback callback(
+ [treeManager](uint64_t aInputBlockId, bool aPreventDefault) {
+ MOZ_ASSERT(NS_IsMainThread());
+ APZThreadUtils::RunOnControllerThread(NewRunnableMethod<uint64_t, bool>(
+ "layers::IAPZCTreeManager::ContentReceivedInputBlock", treeManager,
+ &IAPZCTreeManager::ContentReceivedInputBlock, aInputBlockId,
+ aPreventDefault));
+ });
+ mAPZEventState = new APZEventState(this, std::move(callback));
+
+ mSetAllowedTouchBehaviorCallback =
+ [treeManager](uint64_t aInputBlockId,
+ const nsTArray<TouchBehaviorFlags>& aFlags) {
+ MOZ_ASSERT(NS_IsMainThread());
+ APZThreadUtils::RunOnControllerThread(
+ NewRunnableMethod<
+ uint64_t, StoreCopyPassByLRef<nsTArray<TouchBehaviorFlags>>>(
+ "layers::IAPZCTreeManager::SetAllowedTouchBehavior",
+ treeManager, &IAPZCTreeManager::SetAllowedTouchBehavior,
+ aInputBlockId, aFlags.Clone()));
+ };
+
+ mRootContentController = CreateRootContentController();
+ if (mRootContentController) {
+ mCompositorSession->SetContentController(mRootContentController);
+ }
+
+ // When APZ is enabled, we can actually enable raw touch events because we
+ // have code that can deal with them properly. If APZ is not enabled, this
+ // function doesn't get called.
+ if (StaticPrefs::dom_w3c_touch_events_enabled() ||
+ StaticPrefs::dom_w3c_pointer_events_enabled()) {
+ RegisterTouchWindow();
+ }
+}
+
+void nsBaseWidget::ConfigureAPZControllerThread() {
+ // By default the controller thread is the main thread.
+ APZThreadUtils::SetControllerThread(NS_GetCurrentThread());
+}
+
+void nsBaseWidget::SetConfirmedTargetAPZC(
+ uint64_t aInputBlockId,
+ const nsTArray<ScrollableLayerGuid>& aTargets) const {
+ APZThreadUtils::RunOnControllerThread(
+ NewRunnableMethod<uint64_t,
+ StoreCopyPassByRRef<nsTArray<ScrollableLayerGuid>>>(
+ "layers::IAPZCTreeManager::SetTargetAPZC", mAPZC,
+ &IAPZCTreeManager::SetTargetAPZC, aInputBlockId, aTargets.Clone()));
+}
+
+void nsBaseWidget::UpdateZoomConstraints(
+ const uint32_t& aPresShellId, const ScrollableLayerGuid::ViewID& aViewId,
+ const Maybe<ZoomConstraints>& aConstraints) {
+ if (!mCompositorSession || !mAPZC) {
+ if (mInitialZoomConstraints) {
+ MOZ_ASSERT(mInitialZoomConstraints->mPresShellID == aPresShellId);
+ MOZ_ASSERT(mInitialZoomConstraints->mViewID == aViewId);
+ if (!aConstraints) {
+ mInitialZoomConstraints.reset();
+ }
+ }
+
+ if (aConstraints) {
+ // We have some constraints, but the compositor and APZC aren't created
+ // yet. Save these so we can use them later.
+ mInitialZoomConstraints = Some(
+ InitialZoomConstraints(aPresShellId, aViewId, aConstraints.ref()));
+ }
+ return;
+ }
+ LayersId layersId = mCompositorSession->RootLayerTreeId();
+ mAPZC->UpdateZoomConstraints(
+ ScrollableLayerGuid(layersId, aPresShellId, aViewId), aConstraints);
+}
+
+bool nsBaseWidget::AsyncPanZoomEnabled() const { return !!mAPZC; }
+
+nsEventStatus nsBaseWidget::ProcessUntransformedAPZEvent(
+ WidgetInputEvent* aEvent, const APZEventResult& aApzResult) {
+ MOZ_ASSERT(NS_IsMainThread());
+ ScrollableLayerGuid targetGuid = aApzResult.mTargetGuid;
+ uint64_t inputBlockId = aApzResult.mInputBlockId;
+ InputAPZContext context(aApzResult.mTargetGuid, inputBlockId,
+ aApzResult.mStatus);
+
+ // Make a copy of the original event for the APZCCallbackHelper helpers that
+ // we call later, because the event passed to DispatchEvent can get mutated in
+ // ways that we don't want (i.e. touch points can get stripped out).
+ nsEventStatus status;
+ UniquePtr<WidgetEvent> original(aEvent->Duplicate());
+ DispatchEvent(aEvent, status);
+
+ if (mAPZC && !InputAPZContext::WasRoutedToChildProcess() && inputBlockId) {
+ // EventStateManager did not route the event into the child process.
+ // It's safe to communicate to APZ that the event has been processed.
+ // Note that here aGuid.mLayersId might be different from
+ // mCompositorSession->RootLayerTreeId() because the event might have gotten
+ // hit-tested by APZ to be targeted at a child process, but a parent process
+ // event listener called preventDefault on it. In that case aGuid.mLayersId
+ // would still be the layers id for the child process, but the event would
+ // not have actually gotten routed to the child process. The main-thread
+ // hit-test result therefore needs to use the parent process layers id.
+ LayersId rootLayersId = mCompositorSession->RootLayerTreeId();
+
+ UniquePtr<DisplayportSetListener> postLayerization;
+ if (WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent()) {
+ nsTArray<TouchBehaviorFlags> allowedTouchBehaviors;
+ if (touchEvent->mMessage == eTouchStart) {
+ if (StaticPrefs::layout_css_touch_action_enabled()) {
+ allowedTouchBehaviors =
+ APZCCallbackHelper::SendSetAllowedTouchBehaviorNotification(
+ this, GetDocument(), *(original->AsTouchEvent()),
+ inputBlockId, mSetAllowedTouchBehaviorCallback);
+ }
+ postLayerization = APZCCallbackHelper::SendSetTargetAPZCNotification(
+ this, GetDocument(), *(original->AsTouchEvent()), rootLayersId,
+ inputBlockId);
+ }
+ mAPZEventState->ProcessTouchEvent(*touchEvent, targetGuid, inputBlockId,
+ aApzResult.mStatus, status,
+ std::move(allowedTouchBehaviors));
+ } else if (WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent()) {
+ MOZ_ASSERT(wheelEvent->mFlags.mHandledByAPZ);
+ postLayerization = APZCCallbackHelper::SendSetTargetAPZCNotification(
+ this, GetDocument(), *(original->AsWheelEvent()), rootLayersId,
+ inputBlockId);
+ if (wheelEvent->mCanTriggerSwipe) {
+ ReportSwipeStarted(inputBlockId, wheelEvent->TriggersSwipe());
+ }
+ mAPZEventState->ProcessWheelEvent(*wheelEvent, inputBlockId);
+ } else if (WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent()) {
+ MOZ_ASSERT(mouseEvent->mFlags.mHandledByAPZ);
+ postLayerization = APZCCallbackHelper::SendSetTargetAPZCNotification(
+ this, GetDocument(), *(original->AsMouseEvent()), rootLayersId,
+ inputBlockId);
+ mAPZEventState->ProcessMouseEvent(*mouseEvent, inputBlockId);
+ }
+ if (postLayerization && postLayerization->Register()) {
+ Unused << postLayerization.release();
+ }
+ }
+
+ return status;
+}
+
+template <class InputType, class EventType>
+class DispatchEventOnMainThread : public Runnable {
+ public:
+ DispatchEventOnMainThread(const InputType& aInput, nsBaseWidget* aWidget,
+ const APZEventResult& aAPZResult)
+ : mozilla::Runnable("DispatchEventOnMainThread"),
+ mInput(aInput),
+ mWidget(aWidget),
+ mAPZResult(aAPZResult) {}
+
+ NS_IMETHOD Run() override {
+ EventType event = mInput.ToWidgetEvent(mWidget);
+ mWidget->ProcessUntransformedAPZEvent(&event, mAPZResult);
+ return NS_OK;
+ }
+
+ private:
+ InputType mInput;
+ nsBaseWidget* mWidget;
+ APZEventResult mAPZResult;
+};
+
+template <class InputType, class EventType>
+class DispatchInputOnControllerThread : public Runnable {
+ public:
+ DispatchInputOnControllerThread(const EventType& aEvent,
+ IAPZCTreeManager* aAPZC,
+ nsBaseWidget* aWidget)
+ : mozilla::Runnable("DispatchInputOnControllerThread"),
+ mMainMessageLoop(MessageLoop::current()),
+ mInput(aEvent),
+ mAPZC(aAPZC),
+ mWidget(aWidget) {}
+
+ NS_IMETHOD Run() override {
+ APZEventResult result = mAPZC->InputBridge()->ReceiveInputEvent(mInput);
+ if (result.mStatus == nsEventStatus_eConsumeNoDefault) {
+ return NS_OK;
+ }
+ RefPtr<Runnable> r = new DispatchEventOnMainThread<InputType, EventType>(
+ mInput, mWidget, result);
+ mMainMessageLoop->PostTask(r.forget());
+ return NS_OK;
+ }
+
+ private:
+ MessageLoop* mMainMessageLoop;
+ InputType mInput;
+ RefPtr<IAPZCTreeManager> mAPZC;
+ nsBaseWidget* mWidget;
+};
+
+void nsBaseWidget::DispatchTouchInput(MultiTouchInput& aInput) {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (mAPZC) {
+ MOZ_ASSERT(APZThreadUtils::IsControllerThread());
+
+ APZEventResult result = mAPZC->InputBridge()->ReceiveInputEvent(aInput);
+ if (result.mStatus == nsEventStatus_eConsumeNoDefault) {
+ return;
+ }
+
+ WidgetTouchEvent event = aInput.ToWidgetTouchEvent(this);
+ ProcessUntransformedAPZEvent(&event, result);
+ } else {
+ WidgetTouchEvent event = aInput.ToWidgetTouchEvent(this);
+
+ nsEventStatus status;
+ DispatchEvent(&event, status);
+ }
+}
+
+void nsBaseWidget::DispatchPanGestureInput(PanGestureInput& aInput) {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (mAPZC) {
+ MOZ_ASSERT(APZThreadUtils::IsControllerThread());
+
+ APZEventResult result = mAPZC->InputBridge()->ReceiveInputEvent(aInput);
+ if (result.mStatus == nsEventStatus_eConsumeNoDefault) {
+ return;
+ }
+
+ WidgetWheelEvent event = aInput.ToWidgetEvent(this);
+ ProcessUntransformedAPZEvent(&event, result);
+ } else {
+ WidgetWheelEvent event = aInput.ToWidgetEvent(this);
+ nsEventStatus status;
+ DispatchEvent(&event, status);
+ }
+}
+
+void nsBaseWidget::DispatchPinchGestureInput(PinchGestureInput& aInput) {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (mAPZC) {
+ MOZ_ASSERT(APZThreadUtils::IsControllerThread());
+ APZEventResult result = mAPZC->InputBridge()->ReceiveInputEvent(aInput);
+
+ if (result.mStatus == nsEventStatus_eConsumeNoDefault) {
+ return;
+ }
+ WidgetWheelEvent event = aInput.ToWidgetEvent(this);
+ ProcessUntransformedAPZEvent(&event, result);
+ } else {
+ WidgetWheelEvent event = aInput.ToWidgetEvent(this);
+ nsEventStatus status;
+ DispatchEvent(&event, status);
+ }
+}
+
+nsEventStatus nsBaseWidget::DispatchInputEvent(WidgetInputEvent* aEvent) {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (mAPZC) {
+ if (APZThreadUtils::IsControllerThread()) {
+ APZEventResult result = mAPZC->InputBridge()->ReceiveInputEvent(*aEvent);
+ if (result.mStatus == nsEventStatus_eConsumeNoDefault) {
+ return result.mStatus;
+ }
+ return ProcessUntransformedAPZEvent(aEvent, result);
+ }
+ if (WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent()) {
+ RefPtr<Runnable> r =
+ new DispatchInputOnControllerThread<ScrollWheelInput,
+ WidgetWheelEvent>(*wheelEvent,
+ mAPZC, this);
+ APZThreadUtils::RunOnControllerThread(std::move(r));
+ return nsEventStatus_eConsumeDoDefault;
+ }
+ if (WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent()) {
+ RefPtr<Runnable> r =
+ new DispatchInputOnControllerThread<MouseInput, WidgetMouseEvent>(
+ *mouseEvent, mAPZC, this);
+ APZThreadUtils::RunOnControllerThread(std::move(r));
+ return nsEventStatus_eConsumeDoDefault;
+ }
+ // Allow dispatching keyboard events on Gecko thread.
+ MOZ_ASSERT(aEvent->AsKeyboardEvent());
+ }
+
+ nsEventStatus status;
+ DispatchEvent(aEvent, status);
+ return status;
+}
+
+void nsBaseWidget::DispatchEventToAPZOnly(mozilla::WidgetInputEvent* aEvent) {
+ MOZ_ASSERT(NS_IsMainThread());
+ if (mAPZC) {
+ MOZ_ASSERT(APZThreadUtils::IsControllerThread());
+ mAPZC->InputBridge()->ReceiveInputEvent(*aEvent);
+ }
+}
+
+Document* nsBaseWidget::GetDocument() const {
+ if (mWidgetListener) {
+ if (PresShell* presShell = mWidgetListener->GetPresShell()) {
+ return presShell->GetDocument();
+ }
+ }
+ return nullptr;
+}
+
+void nsBaseWidget::CreateCompositorVsyncDispatcher() {
+ // Parent directly listens to the vsync source whereas
+ // child process communicate via IPC
+ // Should be called AFTER gfxPlatform is initialized
+ if (XRE_IsParentProcess()) {
+ if (!mCompositorVsyncDispatcherLock) {
+ mCompositorVsyncDispatcherLock =
+ MakeUnique<Mutex>("mCompositorVsyncDispatcherLock");
+ }
+ MutexAutoLock lock(*mCompositorVsyncDispatcherLock.get());
+ if (!mCompositorVsyncDispatcher) {
+ mCompositorVsyncDispatcher = new CompositorVsyncDispatcher();
+ }
+ }
+}
+
+already_AddRefed<CompositorVsyncDispatcher>
+nsBaseWidget::GetCompositorVsyncDispatcher() {
+ MOZ_ASSERT(mCompositorVsyncDispatcherLock.get());
+
+ MutexAutoLock lock(*mCompositorVsyncDispatcherLock.get());
+ RefPtr<CompositorVsyncDispatcher> dispatcher = mCompositorVsyncDispatcher;
+ return dispatcher.forget();
+}
+
+already_AddRefed<LayerManager> nsBaseWidget::CreateCompositorSession(
+ int aWidth, int aHeight, CompositorOptions* aOptionsOut) {
+ MOZ_ASSERT(aOptionsOut);
+
+ do {
+ CreateCompositorVsyncDispatcher();
+
+ gfx::GPUProcessManager* gpu = gfx::GPUProcessManager::Get();
+ // Make sure GPU process is ready for use.
+ // If it failed to connect to GPU process, GPU process usage is disabled in
+ // EnsureGPUReady(). It could update gfxVars and gfxConfigs.
+ gpu->EnsureGPUReady();
+
+ // If widget type does not supports acceleration, we use ClientLayerManager
+ // even when gfxVars::UseWebRender() is true. WebRender could coexist only
+ // with BasicCompositor.
+ bool enableWR =
+ gfx::gfxVars::UseWebRender() && WidgetTypeSupportsAcceleration();
+ bool enableAPZ = UseAPZ();
+ CompositorOptions options(enableAPZ, enableWR);
+
+ // Bug 1588484 - Advanced Layers is currently disabled for fission windows,
+ // since it doesn't properly support nested RefLayers.
+ bool enableAL =
+ gfx::gfxConfig::IsEnabled(gfx::Feature::ADVANCED_LAYERS) &&
+ (!mFissionWindow || StaticPrefs::layers_advanced_fission_enabled());
+ options.SetUseAdvancedLayers(enableAL);
+
+#ifdef MOZ_WIDGET_ANDROID
+ if (!GetNativeData(NS_JAVA_SURFACE)) {
+ options.SetInitiallyPaused(true);
+ }
+#else
+ options.SetInitiallyPaused(CompositorInitiallyPaused());
+#endif
+
+ RefPtr<LayerManager> lm;
+ if (options.UseWebRender()) {
+ lm = new WebRenderLayerManager(this);
+ } else {
+ lm = new ClientLayerManager(this);
+ }
+
+ bool retry = false;
+ mCompositorSession = gpu->CreateTopLevelCompositor(
+ this, lm, GetDefaultScale(), options, UseExternalCompositingSurface(),
+ gfx::IntSize(aWidth, aHeight), &retry);
+
+ if (lm->AsWebRenderLayerManager() && mCompositorSession) {
+ TextureFactoryIdentifier textureFactoryIdentifier;
+ nsCString error;
+ lm->AsWebRenderLayerManager()->Initialize(
+ mCompositorSession->GetCompositorBridgeChild(),
+ wr::AsPipelineId(mCompositorSession->RootLayerTreeId()),
+ &textureFactoryIdentifier, error);
+ if (textureFactoryIdentifier.mParentBackend != LayersBackend::LAYERS_WR) {
+ retry = true;
+ DestroyCompositor();
+ // gfxVars::UseDoubleBufferingWithCompositor() is also disabled.
+ gfx::GPUProcessManager::Get()->DisableWebRender(
+ wr::WebRenderError::INITIALIZE, error);
+ }
+ } else if (lm->AsClientLayerManager() && mCompositorSession) {
+ bool shouldAccelerate = ComputeShouldAccelerate();
+ TextureFactoryIdentifier textureFactoryIdentifier;
+ lm->AsClientLayerManager()->Initialize(
+ mCompositorSession->GetCompositorBridgeChild(), shouldAccelerate,
+ &textureFactoryIdentifier);
+ if (textureFactoryIdentifier.mParentBackend ==
+ LayersBackend::LAYERS_NONE) {
+ DestroyCompositor();
+ lm = nullptr;
+ }
+ }
+
+ // We need to retry in a loop because the act of failing to create the
+ // compositor can change our state (e.g. disable WebRender).
+ if (mCompositorSession || !retry) {
+ *aOptionsOut = options;
+ return lm.forget();
+ }
+ } while (true);
+}
+
+void nsBaseWidget::CreateCompositor(int aWidth, int aHeight) {
+ // This makes sure that gfxPlatforms gets initialized if it hasn't by now.
+ gfxPlatform::GetPlatform();
+
+ MOZ_ASSERT(gfxPlatform::UsesOffMainThreadCompositing(),
+ "This function assumes OMTC");
+
+ MOZ_ASSERT(!mCompositorSession && !mCompositorBridgeChild,
+ "Should have properly cleaned up the previous PCompositor pair "
+ "beforehand");
+
+ if (mCompositorBridgeChild) {
+ mCompositorBridgeChild->Destroy();
+ }
+
+ // Recreating this is tricky, as we may still have an old and we need
+ // to make sure it's properly destroyed by calling DestroyCompositor!
+
+ // If we've already received a shutdown notification, don't try
+ // create a new compositor.
+ if (!mShutdownObserver) {
+ return;
+ }
+
+ CompositorOptions options;
+ RefPtr<LayerManager> lm = CreateCompositorSession(aWidth, aHeight, &options);
+ if (!lm) {
+ return;
+ }
+
+ MOZ_ASSERT(mCompositorSession);
+ mCompositorBridgeChild = mCompositorSession->GetCompositorBridgeChild();
+ SetCompositorWidgetDelegate(
+ mCompositorSession->GetCompositorWidgetDelegate());
+
+ if (options.UseAPZ()) {
+ mAPZC = mCompositorSession->GetAPZCTreeManager();
+ ConfigureAPZCTreeManager();
+ } else {
+ mAPZC = nullptr;
+ }
+
+ if (mInitialZoomConstraints) {
+ UpdateZoomConstraints(mInitialZoomConstraints->mPresShellID,
+ mInitialZoomConstraints->mViewID,
+ Some(mInitialZoomConstraints->mConstraints));
+ mInitialZoomConstraints.reset();
+ }
+
+ if (lm->AsWebRenderLayerManager()) {
+ TextureFactoryIdentifier textureFactoryIdentifier =
+ lm->GetTextureFactoryIdentifier();
+ MOZ_ASSERT(textureFactoryIdentifier.mParentBackend ==
+ LayersBackend::LAYERS_WR);
+ ImageBridgeChild::IdentifyCompositorTextureHost(textureFactoryIdentifier);
+ gfx::VRManagerChild::IdentifyTextureHost(textureFactoryIdentifier);
+ } else if (lm->AsClientLayerManager()) {
+ TextureFactoryIdentifier textureFactoryIdentifier =
+ lm->GetTextureFactoryIdentifier();
+ // Some popup or transparent widgets may use a different backend than the
+ // compositors used with ImageBridge and VR (and more generally web
+ // content).
+ if (WidgetTypeSupportsAcceleration()) {
+ ImageBridgeChild::IdentifyCompositorTextureHost(textureFactoryIdentifier);
+ gfx::VRManagerChild::IdentifyTextureHost(textureFactoryIdentifier);
+ }
+ }
+
+ WindowUsesOMTC();
+
+ mLayerManager = std::move(lm);
+
+ // Only track compositors for top-level windows, since other window types
+ // may use the basic compositor. Except on the OS X - see bug 1306383
+#if defined(XP_MACOSX)
+ bool getCompositorFromThisWindow = true;
+#else
+ bool getCompositorFromThisWindow = (mWindowType == eWindowType_toplevel);
+#endif
+
+ if (getCompositorFromThisWindow) {
+ gfxPlatform::GetPlatform()->NotifyCompositorCreated(
+ mLayerManager->GetCompositorBackendType());
+ }
+}
+
+void nsBaseWidget::NotifyCompositorSessionLost(CompositorSession* aSession) {
+ MOZ_ASSERT(aSession == mCompositorSession);
+ DestroyLayerManager();
+}
+
+bool nsBaseWidget::ShouldUseOffMainThreadCompositing() {
+ return gfxPlatform::UsesOffMainThreadCompositing();
+}
+
+LayerManager* nsBaseWidget::GetLayerManager(
+ PLayerTransactionChild* aShadowManager, LayersBackend aBackendHint,
+ LayerManagerPersistence aPersistence) {
+ if (!mLayerManager) {
+ if (!mShutdownObserver) {
+ // We are shutting down, do not try to re-create a LayerManager
+ return nullptr;
+ }
+ // Try to use an async compositor first, if possible
+ if (ShouldUseOffMainThreadCompositing()) {
+ // e10s uses the parameter to pass in the shadow manager from the
+ // BrowserChild so we don't expect to see it there since this doesn't
+ // support e10s.
+ NS_ASSERTION(aShadowManager == nullptr,
+ "Async Compositor not supported with e10s");
+ CreateCompositor();
+ }
+
+ if (!mLayerManager) {
+ mLayerManager = CreateBasicLayerManager();
+ }
+ }
+ return mLayerManager;
+}
+
+LayerManager* nsBaseWidget::CreateBasicLayerManager() {
+ return new BasicLayerManager(this);
+}
+
+CompositorBridgeChild* nsBaseWidget::GetRemoteRenderer() {
+ return mCompositorBridgeChild;
+}
+
+void nsBaseWidget::ClearCachedWebrenderResources() {
+ if (!mLayerManager || !mLayerManager->AsWebRenderLayerManager()) {
+ return;
+ }
+ mLayerManager->ClearCachedResources();
+}
+
+already_AddRefed<gfx::DrawTarget> nsBaseWidget::StartRemoteDrawing() {
+ return nullptr;
+}
+
+uint32_t nsBaseWidget::GetGLFrameBufferFormat() { return LOCAL_GL_RGBA; }
+
+//-------------------------------------------------------------------------
+//
+// Destroy the window
+//
+//-------------------------------------------------------------------------
+void nsBaseWidget::OnDestroy() {
+ if (mTextEventDispatcher) {
+ mTextEventDispatcher->OnDestroyWidget();
+ // Don't release it until this widget actually released because after this
+ // is called, TextEventDispatcher() may create it again.
+ }
+
+ // If this widget is being destroyed, let the APZ code know to drop references
+ // to this widget. Callers of this function all should be holding a deathgrip
+ // on this widget already.
+ ReleaseContentController();
+}
+
+void nsBaseWidget::MoveClient(const DesktopPoint& aOffset) {
+ LayoutDeviceIntPoint clientOffset(GetClientOffset());
+
+ // GetClientOffset returns device pixels; scale back to desktop pixels
+ // if that's what this widget uses for the Move/Resize APIs
+ if (BoundsUseDesktopPixels()) {
+ DesktopPoint desktopOffset = clientOffset / GetDesktopToDeviceScale();
+ Move(aOffset.x - desktopOffset.x, aOffset.y - desktopOffset.y);
+ } else {
+ LayoutDevicePoint layoutOffset = aOffset * GetDesktopToDeviceScale();
+ Move(layoutOffset.x - clientOffset.x, layoutOffset.y - clientOffset.y);
+ }
+}
+
+void nsBaseWidget::ResizeClient(const DesktopSize& aSize, bool aRepaint) {
+ NS_ASSERTION((aSize.width >= 0), "Negative width passed to ResizeClient");
+ NS_ASSERTION((aSize.height >= 0), "Negative height passed to ResizeClient");
+
+ LayoutDeviceIntRect clientBounds = GetClientBounds();
+
+ // GetClientBounds and mBounds are device pixels; scale back to desktop pixels
+ // if that's what this widget uses for the Move/Resize APIs
+ if (BoundsUseDesktopPixels()) {
+ DesktopSize desktopDelta =
+ (LayoutDeviceIntSize(mBounds.Width(), mBounds.Height()) -
+ clientBounds.Size()) /
+ GetDesktopToDeviceScale();
+ Resize(aSize.width + desktopDelta.width, aSize.height + desktopDelta.height,
+ aRepaint);
+ } else {
+ LayoutDeviceSize layoutSize = aSize * GetDesktopToDeviceScale();
+ Resize(mBounds.Width() + (layoutSize.width - clientBounds.Width()),
+ mBounds.Height() + (layoutSize.height - clientBounds.Height()),
+ aRepaint);
+ }
+}
+
+void nsBaseWidget::ResizeClient(const DesktopRect& aRect, bool aRepaint) {
+ NS_ASSERTION((aRect.Width() >= 0), "Negative width passed to ResizeClient");
+ NS_ASSERTION((aRect.Height() >= 0), "Negative height passed to ResizeClient");
+
+ LayoutDeviceIntRect clientBounds = GetClientBounds();
+ LayoutDeviceIntPoint clientOffset = GetClientOffset();
+ DesktopToLayoutDeviceScale scale = GetDesktopToDeviceScale();
+
+ if (BoundsUseDesktopPixels()) {
+ DesktopPoint desktopOffset = clientOffset / scale;
+ DesktopSize desktopDelta =
+ (LayoutDeviceIntSize(mBounds.Width(), mBounds.Height()) -
+ clientBounds.Size()) /
+ scale;
+ Resize(aRect.X() - desktopOffset.x, aRect.Y() - desktopOffset.y,
+ aRect.Width() + desktopDelta.width,
+ aRect.Height() + desktopDelta.height, aRepaint);
+ } else {
+ LayoutDeviceRect layoutRect = aRect * scale;
+ Resize(layoutRect.X() - clientOffset.x, layoutRect.Y() - clientOffset.y,
+ layoutRect.Width() + mBounds.Width() - clientBounds.Width(),
+ layoutRect.Height() + mBounds.Height() - clientBounds.Height(),
+ aRepaint);
+ }
+}
+
+//-------------------------------------------------------------------------
+//
+// Bounds
+//
+//-------------------------------------------------------------------------
+
+/**
+ * If the implementation of nsWindow supports borders this method MUST be
+ * overridden
+ *
+ **/
+LayoutDeviceIntRect nsBaseWidget::GetClientBounds() { return GetBounds(); }
+
+/**
+ * If the implementation of nsWindow supports borders this method MUST be
+ * overridden
+ *
+ **/
+LayoutDeviceIntRect nsBaseWidget::GetBounds() { return mBounds; }
+
+/**
+ * If the implementation of nsWindow uses a local coordinate system within the
+ *window, this method must be overridden
+ *
+ **/
+LayoutDeviceIntRect nsBaseWidget::GetScreenBounds() { return GetBounds(); }
+
+nsresult nsBaseWidget::GetRestoredBounds(LayoutDeviceIntRect& aRect) {
+ if (SizeMode() != nsSizeMode_Normal) {
+ return NS_ERROR_FAILURE;
+ }
+ aRect = GetScreenBounds();
+ return NS_OK;
+}
+
+LayoutDeviceIntPoint nsBaseWidget::GetClientOffset() {
+ return LayoutDeviceIntPoint(0, 0);
+}
+
+nsresult nsBaseWidget::SetNonClientMargins(LayoutDeviceIntMargin& margins) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+uint32_t nsBaseWidget::GetMaxTouchPoints() const { return 0; }
+
+bool nsBaseWidget::HasPendingInputEvent() { return false; }
+
+bool nsBaseWidget::ShowsResizeIndicator(LayoutDeviceIntRect* aResizerRect) {
+ return false;
+}
+
+/**
+ * Modifies aFile to point at an icon file with the given name and suffix. The
+ * suffix may correspond to a file extension with leading '.' if appropriate.
+ * Returns true if the icon file exists and can be read.
+ */
+static bool ResolveIconNameHelper(nsIFile* aFile, const nsAString& aIconName,
+ const nsAString& aIconSuffix) {
+ aFile->Append(u"icons"_ns);
+ aFile->Append(u"default"_ns);
+ aFile->Append(aIconName + aIconSuffix);
+
+ bool readable;
+ return NS_SUCCEEDED(aFile->IsReadable(&readable)) && readable;
+}
+
+/**
+ * Resolve the given icon name into a local file object. This method is
+ * intended to be called by subclasses of nsBaseWidget. aIconSuffix is a
+ * platform specific icon file suffix (e.g., ".ico" under Win32).
+ *
+ * If no file is found matching the given parameters, then null is returned.
+ */
+void nsBaseWidget::ResolveIconName(const nsAString& aIconName,
+ const nsAString& aIconSuffix,
+ nsIFile** aResult) {
+ *aResult = nullptr;
+
+ nsCOMPtr<nsIProperties> dirSvc =
+ do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
+ if (!dirSvc) return;
+
+ // first check auxilary chrome directories
+
+ nsCOMPtr<nsISimpleEnumerator> dirs;
+ dirSvc->Get(NS_APP_CHROME_DIR_LIST, NS_GET_IID(nsISimpleEnumerator),
+ getter_AddRefs(dirs));
+ if (dirs) {
+ bool hasMore;
+ while (NS_SUCCEEDED(dirs->HasMoreElements(&hasMore)) && hasMore) {
+ nsCOMPtr<nsISupports> element;
+ dirs->GetNext(getter_AddRefs(element));
+ if (!element) continue;
+ nsCOMPtr<nsIFile> file = do_QueryInterface(element);
+ if (!file) continue;
+ if (ResolveIconNameHelper(file, aIconName, aIconSuffix)) {
+ NS_ADDREF(*aResult = file);
+ return;
+ }
+ }
+ }
+
+ // then check the main app chrome directory
+
+ nsCOMPtr<nsIFile> file;
+ dirSvc->Get(NS_APP_CHROME_DIR, NS_GET_IID(nsIFile), getter_AddRefs(file));
+ if (file && ResolveIconNameHelper(file, aIconName, aIconSuffix))
+ NS_ADDREF(*aResult = file);
+}
+
+void nsBaseWidget::SetSizeConstraints(const SizeConstraints& aConstraints) {
+ mSizeConstraints = aConstraints;
+
+ // Popups are constrained during layout, and we don't want to synchronously
+ // paint from reflow, so bail out... This is not great, but it's no worse than
+ // what we used to do.
+ //
+ // The right fix here is probably making constraint changes go through the
+ // view manager and such.
+ if (mWindowType == eWindowType_popup) {
+ return;
+ }
+
+ // If the current size doesn't meet the new constraints, trigger a
+ // resize to apply it. Note that, we don't want to invoke Resize if
+ // the new constraints don't affect the current size, because Resize
+ // implementation on some platforms may touch other geometry even if
+ // the size don't need to change.
+ LayoutDeviceIntSize curSize = mBounds.Size();
+ LayoutDeviceIntSize clampedSize =
+ Max(aConstraints.mMinSize, Min(aConstraints.mMaxSize, curSize));
+ if (clampedSize != curSize) {
+ gfx::Size size;
+ if (BoundsUseDesktopPixels()) {
+ DesktopSize desktopSize = clampedSize / GetDesktopToDeviceScale();
+ size = desktopSize.ToUnknownSize();
+ } else {
+ size = gfx::Size(clampedSize.ToUnknownSize());
+ }
+ Resize(size.width, size.height, true);
+ }
+}
+
+const widget::SizeConstraints nsBaseWidget::GetSizeConstraints() {
+ return mSizeConstraints;
+}
+
+// static
+nsIRollupListener* nsBaseWidget::GetActiveRollupListener() {
+ // If set, then this is likely an <html:select> dropdown.
+ if (gRollupListener) return gRollupListener;
+
+ return nsXULPopupManager::GetInstance();
+}
+
+void nsBaseWidget::NotifyWindowDestroyed() {
+ if (!mWidgetListener) return;
+
+ nsCOMPtr<nsIAppWindow> window = mWidgetListener->GetAppWindow();
+ nsCOMPtr<nsIBaseWindow> appWindow(do_QueryInterface(window));
+ if (appWindow) {
+ appWindow->Destroy();
+ }
+}
+
+void nsBaseWidget::NotifyWindowMoved(int32_t aX, int32_t aY) {
+ if (mWidgetListener) {
+ mWidgetListener->WindowMoved(this, aX, aY);
+ }
+
+ if (mIMEHasFocus && IMENotificationRequestsRef().WantPositionChanged()) {
+ NotifyIME(IMENotification(IMEMessage::NOTIFY_IME_OF_POSITION_CHANGE));
+ }
+}
+
+void nsBaseWidget::NotifySizeMoveDone() {
+ if (!mWidgetListener) {
+ return;
+ }
+ if (PresShell* presShell = mWidgetListener->GetPresShell()) {
+ presShell->WindowSizeMoveDone();
+ }
+}
+
+void nsBaseWidget::NotifyThemeChanged(ThemeChangeKind aKind) {
+ if (!mWidgetListener) {
+ return;
+ }
+ if (PresShell* presShell = mWidgetListener->GetPresShell()) {
+ presShell->ThemeChanged(aKind);
+ }
+}
+
+void nsBaseWidget::NotifyUIStateChanged(UIStateChangeType aShowFocusRings) {
+ if (Document* doc = GetDocument()) {
+ if (nsPIDOMWindowOuter* win = doc->GetWindow()) {
+ win->SetKeyboardIndicators(aShowFocusRings);
+ }
+ }
+}
+
+nsresult nsBaseWidget::NotifyIME(const IMENotification& aIMENotification) {
+ if (mIMEHasQuit) {
+ return NS_OK;
+ }
+ switch (aIMENotification.mMessage) {
+ case REQUEST_TO_COMMIT_COMPOSITION:
+ case REQUEST_TO_CANCEL_COMPOSITION:
+ // We should send request to IME only when there is a TextEventDispatcher
+ // instance (this means that this widget has dispatched at least one
+ // composition event or keyboard event) and the it has composition.
+ // Otherwise, there is nothing to do.
+ // Note that if current input transaction is for native input events,
+ // TextEventDispatcher::NotifyIME() will call
+ // TextEventDispatcherListener::NotifyIME().
+ if (mTextEventDispatcher && mTextEventDispatcher->IsComposing()) {
+ return mTextEventDispatcher->NotifyIME(aIMENotification);
+ }
+ return NS_OK;
+ default: {
+ if (aIMENotification.mMessage == NOTIFY_IME_OF_FOCUS) {
+ mIMEHasFocus = true;
+ }
+ EnsureTextEventDispatcher();
+ // TextEventDispatcher::NotifyIME() will always call
+ // TextEventDispatcherListener::NotifyIME(). I.e., even if current
+ // input transaction is for synthesized events for automated tests,
+ // notifications will be sent to native IME.
+ nsresult rv = mTextEventDispatcher->NotifyIME(aIMENotification);
+ if (aIMENotification.mMessage == NOTIFY_IME_OF_BLUR) {
+ mIMEHasFocus = false;
+ }
+ return rv;
+ }
+ }
+}
+
+void nsBaseWidget::EnsureTextEventDispatcher() {
+ if (mTextEventDispatcher) {
+ return;
+ }
+ mTextEventDispatcher = new TextEventDispatcher(this);
+}
+
+nsIWidget::NativeIMEContext nsBaseWidget::GetNativeIMEContext() {
+ if (mTextEventDispatcher && mTextEventDispatcher->GetPseudoIMEContext()) {
+ // If we already have a TextEventDispatcher and it's working with
+ // a TextInputProcessor, we need to return pseudo IME context since
+ // TextCompositionArray::IndexOf(nsIWidget*) should return a composition
+ // on the pseudo IME context in such case.
+ NativeIMEContext pseudoIMEContext;
+ pseudoIMEContext.InitWithRawNativeIMEContext(
+ mTextEventDispatcher->GetPseudoIMEContext());
+ return pseudoIMEContext;
+ }
+ return NativeIMEContext(this);
+}
+
+nsIWidget::TextEventDispatcher* nsBaseWidget::GetTextEventDispatcher() {
+ EnsureTextEventDispatcher();
+ return mTextEventDispatcher;
+}
+
+void* nsBaseWidget::GetPseudoIMEContext() {
+ TextEventDispatcher* dispatcher = GetTextEventDispatcher();
+ if (!dispatcher) {
+ return nullptr;
+ }
+ return dispatcher->GetPseudoIMEContext();
+}
+
+TextEventDispatcherListener*
+nsBaseWidget::GetNativeTextEventDispatcherListener() {
+ // TODO: If all platforms supported use of TextEventDispatcher for handling
+ // native IME and keyboard events, this method should be removed since
+ // in such case, this is overridden by all the subclasses.
+ return nullptr;
+}
+
+void nsBaseWidget::ZoomToRect(const uint32_t& aPresShellId,
+ const ScrollableLayerGuid::ViewID& aViewId,
+ const CSSRect& aRect, const uint32_t& aFlags) {
+ if (!mCompositorSession || !mAPZC) {
+ return;
+ }
+ LayersId layerId = mCompositorSession->RootLayerTreeId();
+ APZThreadUtils::RunOnControllerThread(
+ NewRunnableMethod<ScrollableLayerGuid, CSSRect, uint32_t>(
+ "layers::IAPZCTreeManager::ZoomToRect", mAPZC,
+ &IAPZCTreeManager::ZoomToRect,
+ ScrollableLayerGuid(layerId, aPresShellId, aViewId), aRect, aFlags));
+}
+
+#ifdef ACCESSIBILITY
+
+a11y::Accessible* nsBaseWidget::GetRootAccessible() {
+ NS_ENSURE_TRUE(mWidgetListener, nullptr);
+
+ PresShell* presShell = mWidgetListener->GetPresShell();
+ NS_ENSURE_TRUE(presShell, nullptr);
+
+ // If container is null then the presshell is not active. This often happens
+ // when a preshell is being held onto for fastback.
+ nsPresContext* presContext = presShell->GetPresContext();
+ NS_ENSURE_TRUE(presContext->GetContainerWeak(), nullptr);
+
+ // Accessible creation might be not safe so use IsSafeToRunScript to
+ // make sure it's not created at unsafe times.
+ nsAccessibilityService* accService = GetOrCreateAccService();
+ if (accService) {
+ return accService->GetRootDocumentAccessible(
+ presShell, nsContentUtils::IsSafeToRunScript());
+ }
+
+ return nullptr;
+}
+
+#endif // ACCESSIBILITY
+
+void nsBaseWidget::StartAsyncScrollbarDrag(
+ const AsyncDragMetrics& aDragMetrics) {
+ if (!AsyncPanZoomEnabled()) {
+ return;
+ }
+
+ MOZ_ASSERT(XRE_IsParentProcess() && mCompositorSession);
+
+ LayersId layersId = mCompositorSession->RootLayerTreeId();
+ ScrollableLayerGuid guid(layersId, aDragMetrics.mPresShellId,
+ aDragMetrics.mViewId);
+
+ APZThreadUtils::RunOnControllerThread(
+ NewRunnableMethod<ScrollableLayerGuid, AsyncDragMetrics>(
+ "layers::IAPZCTreeManager::StartScrollbarDrag", mAPZC,
+ &IAPZCTreeManager::StartScrollbarDrag, guid, aDragMetrics));
+}
+
+bool nsBaseWidget::StartAsyncAutoscroll(const ScreenPoint& aAnchorLocation,
+ const ScrollableLayerGuid& aGuid) {
+ MOZ_ASSERT(XRE_IsParentProcess() && AsyncPanZoomEnabled());
+
+ return mAPZC->StartAutoscroll(aGuid, aAnchorLocation);
+}
+
+void nsBaseWidget::StopAsyncAutoscroll(const ScrollableLayerGuid& aGuid) {
+ MOZ_ASSERT(XRE_IsParentProcess() && AsyncPanZoomEnabled());
+
+ mAPZC->StopAutoscroll(aGuid);
+}
+
+already_AddRefed<nsIScreen> nsBaseWidget::GetWidgetScreen() {
+ nsCOMPtr<nsIScreenManager> screenManager;
+ screenManager = do_GetService("@mozilla.org/gfx/screenmanager;1");
+ if (!screenManager) {
+ return nullptr;
+ }
+
+ LayoutDeviceIntRect bounds = GetScreenBounds();
+ DesktopIntRect deskBounds = RoundedToInt(bounds / GetDesktopToDeviceScale());
+ nsCOMPtr<nsIScreen> screen;
+ screenManager->ScreenForRect(deskBounds.X(), deskBounds.Y(),
+ deskBounds.Width(), deskBounds.Height(),
+ getter_AddRefs(screen));
+ return screen.forget();
+}
+
+mozilla::DesktopToLayoutDeviceScale
+nsBaseWidget::GetDesktopToDeviceScaleByScreen() {
+ return (nsView::GetViewFor(this)->GetViewManager()->GetDeviceContext())
+ ->GetDesktopToDeviceScale();
+}
+
+nsresult nsIWidget::SynthesizeNativeTouchTap(LayoutDeviceIntPoint aPoint,
+ bool aLongTap,
+ nsIObserver* aObserver) {
+ AutoObserverNotifier notifier(aObserver, "touchtap");
+
+ if (sPointerIdCounter > TOUCH_INJECT_MAX_POINTS) {
+ sPointerIdCounter = 0;
+ }
+ int pointerId = sPointerIdCounter;
+ sPointerIdCounter++;
+ nsresult rv = SynthesizeNativeTouchPoint(pointerId, TOUCH_CONTACT, aPoint,
+ 1.0, 90, nullptr);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ if (!aLongTap) {
+ return SynthesizeNativeTouchPoint(pointerId, TOUCH_REMOVE, aPoint, 0, 0,
+ nullptr);
+ }
+
+ // initiate a long tap
+ int elapse = Preferences::GetInt("ui.click_hold_context_menus.delay",
+ TOUCH_INJECT_LONG_TAP_DEFAULT_MSEC);
+ if (!mLongTapTimer) {
+ mLongTapTimer = NS_NewTimer();
+ if (!mLongTapTimer) {
+ SynthesizeNativeTouchPoint(pointerId, TOUCH_CANCEL, aPoint, 0, 0,
+ nullptr);
+ return NS_ERROR_UNEXPECTED;
+ }
+ // Windows requires recuring events, so we set this to a smaller window
+ // than the pref value.
+ int timeout = elapse;
+ if (timeout > TOUCH_INJECT_PUMP_TIMER_MSEC) {
+ timeout = TOUCH_INJECT_PUMP_TIMER_MSEC;
+ }
+ mLongTapTimer->InitWithNamedFuncCallback(
+ OnLongTapTimerCallback, this, timeout, nsITimer::TYPE_REPEATING_SLACK,
+ "nsIWidget::SynthesizeNativeTouchTap");
+ }
+
+ // If we already have a long tap pending, cancel it. We only allow one long
+ // tap to be active at a time.
+ if (mLongTapTouchPoint) {
+ SynthesizeNativeTouchPoint(mLongTapTouchPoint->mPointerId, TOUCH_CANCEL,
+ mLongTapTouchPoint->mPosition, 0, 0, nullptr);
+ }
+
+ mLongTapTouchPoint = MakeUnique<LongTapInfo>(
+ pointerId, aPoint, TimeDuration::FromMilliseconds(elapse), aObserver);
+ notifier.SkipNotification(); // we'll do it in the long-tap callback
+ return NS_OK;
+}
+
+// static
+void nsIWidget::OnLongTapTimerCallback(nsITimer* aTimer, void* aClosure) {
+ auto* self = static_cast<nsIWidget*>(aClosure);
+
+ if ((self->mLongTapTouchPoint->mStamp + self->mLongTapTouchPoint->mDuration) >
+ TimeStamp::Now()) {
+#ifdef XP_WIN
+ // Windows needs us to keep pumping feedback to the digitizer, so update
+ // the pointer id with the same position.
+ self->SynthesizeNativeTouchPoint(
+ self->mLongTapTouchPoint->mPointerId, TOUCH_CONTACT,
+ self->mLongTapTouchPoint->mPosition, 1.0, 90, nullptr);
+#endif
+ return;
+ }
+
+ AutoObserverNotifier notifier(self->mLongTapTouchPoint->mObserver,
+ "touchtap");
+
+ // finished, remove the touch point
+ self->mLongTapTimer->Cancel();
+ self->mLongTapTimer = nullptr;
+ self->SynthesizeNativeTouchPoint(
+ self->mLongTapTouchPoint->mPointerId, TOUCH_REMOVE,
+ self->mLongTapTouchPoint->mPosition, 0, 0, nullptr);
+ self->mLongTapTouchPoint = nullptr;
+}
+
+nsresult nsIWidget::ClearNativeTouchSequence(nsIObserver* aObserver) {
+ AutoObserverNotifier notifier(aObserver, "cleartouch");
+
+ if (!mLongTapTimer) {
+ return NS_OK;
+ }
+ mLongTapTimer->Cancel();
+ mLongTapTimer = nullptr;
+ SynthesizeNativeTouchPoint(mLongTapTouchPoint->mPointerId, TOUCH_CANCEL,
+ mLongTapTouchPoint->mPosition, 0, 0, nullptr);
+ mLongTapTouchPoint = nullptr;
+ return NS_OK;
+}
+
+MultiTouchInput nsBaseWidget::UpdateSynthesizedTouchState(
+ MultiTouchInput* aState, uint32_t aTime, mozilla::TimeStamp aTimeStamp,
+ uint32_t aPointerId, TouchPointerState aPointerState,
+ LayoutDeviceIntPoint aPoint, double aPointerPressure,
+ uint32_t aPointerOrientation) {
+ ScreenIntPoint pointerScreenPoint = ViewAs<ScreenPixel>(
+ aPoint, PixelCastJustification::LayoutDeviceIsScreenForBounds);
+
+ // We can't dispatch *aState directly because (a) dispatching
+ // it might inadvertently modify it and (b) in the case of touchend or
+ // touchcancel events aState will hold the touches that are
+ // still down whereas the input dispatched needs to hold the removed
+ // touch(es). We use |inputToDispatch| for this purpose.
+ MultiTouchInput inputToDispatch;
+ inputToDispatch.mInputType = MULTITOUCH_INPUT;
+ inputToDispatch.mTime = aTime;
+ inputToDispatch.mTimeStamp = aTimeStamp;
+
+ int32_t index = aState->IndexOfTouch((int32_t)aPointerId);
+ if (aPointerState == TOUCH_CONTACT) {
+ if (index >= 0) {
+ // found an existing touch point, update it
+ SingleTouchData& point = aState->mTouches[index];
+ point.mScreenPoint = pointerScreenPoint;
+ point.mRotationAngle = (float)aPointerOrientation;
+ point.mForce = (float)aPointerPressure;
+ inputToDispatch.mType = MultiTouchInput::MULTITOUCH_MOVE;
+ } else {
+ // new touch point, add it
+ aState->mTouches.AppendElement(SingleTouchData(
+ (int32_t)aPointerId, pointerScreenPoint, ScreenSize(0, 0),
+ (float)aPointerOrientation, (float)aPointerPressure));
+ inputToDispatch.mType = MultiTouchInput::MULTITOUCH_START;
+ }
+ inputToDispatch.mTouches = aState->mTouches;
+ } else {
+ MOZ_ASSERT(aPointerState == TOUCH_REMOVE || aPointerState == TOUCH_CANCEL);
+ // a touch point is being lifted, so remove it from the stored list
+ if (index >= 0) {
+ aState->mTouches.RemoveElementAt(index);
+ }
+ inputToDispatch.mType =
+ (aPointerState == TOUCH_REMOVE ? MultiTouchInput::MULTITOUCH_END
+ : MultiTouchInput::MULTITOUCH_CANCEL);
+ inputToDispatch.mTouches.AppendElement(SingleTouchData(
+ (int32_t)aPointerId, pointerScreenPoint, ScreenSize(0, 0),
+ (float)aPointerOrientation, (float)aPointerPressure));
+ }
+
+ return inputToDispatch;
+}
+
+void nsBaseWidget::NotifyLiveResizeStarted() {
+ // If we have mLiveResizeListeners already non-empty, we should notify those
+ // listeners that the resize stopped before starting anew. In theory this
+ // should never happen because we shouldn't get nested live resize actions.
+ NotifyLiveResizeStopped();
+ MOZ_ASSERT(mLiveResizeListeners.IsEmpty());
+
+ // If we can get the active remote tab for the current widget, suppress
+ // the displayport on it during the live resize.
+ if (!mWidgetListener) {
+ return;
+ }
+ nsCOMPtr<nsIAppWindow> appWindow = mWidgetListener->GetAppWindow();
+ if (!appWindow) {
+ return;
+ }
+ mLiveResizeListeners = appWindow->GetLiveResizeListeners();
+ for (uint32_t i = 0; i < mLiveResizeListeners.Length(); i++) {
+ mLiveResizeListeners[i]->LiveResizeStarted();
+ }
+}
+
+void nsBaseWidget::NotifyLiveResizeStopped() {
+ if (!mLiveResizeListeners.IsEmpty()) {
+ for (uint32_t i = 0; i < mLiveResizeListeners.Length(); i++) {
+ mLiveResizeListeners[i]->LiveResizeStopped();
+ }
+ mLiveResizeListeners.Clear();
+ }
+}
+
+void nsBaseWidget::RegisterPluginWindowForRemoteUpdates() {
+#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
+ MOZ_ASSERT_UNREACHABLE(
+ "nsBaseWidget::RegisterPluginWindowForRemoteUpdates "
+ "not implemented!");
+ return;
+#else
+ MOZ_ASSERT(NS_IsMainThread());
+ void* id = GetNativeData(NS_NATIVE_PLUGIN_ID);
+ if (!id) {
+ NS_WARNING("This is not a valid native widget!");
+ return;
+ }
+ MOZ_ASSERT(sPluginWidgetList);
+ sPluginWidgetList->Put(id, RefPtr{this});
+#endif
+}
+
+void nsBaseWidget::UnregisterPluginWindowForRemoteUpdates() {
+#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
+ MOZ_ASSERT_UNREACHABLE(
+ "nsBaseWidget::UnregisterPluginWindowForRemoteUpdates "
+ "not implemented!");
+ return;
+#else
+ MOZ_ASSERT(NS_IsMainThread());
+ void* id = GetNativeData(NS_NATIVE_PLUGIN_ID);
+ if (!id) {
+ NS_WARNING("This is not a valid native widget!");
+ return;
+ }
+ MOZ_ASSERT(sPluginWidgetList);
+ sPluginWidgetList->Remove(id);
+#endif
+}
+
+nsresult nsBaseWidget::AsyncEnableDragDrop(bool aEnable) {
+ RefPtr<nsBaseWidget> kungFuDeathGrip = this;
+ return NS_DispatchToCurrentThreadQueue(
+ NS_NewRunnableFunction(
+ "AsyncEnableDragDropFn",
+ [this, aEnable, kungFuDeathGrip]() { EnableDragDrop(aEnable); }),
+ kAsyncDragDropTimeout, EventQueuePriority::Idle);
+}
+
+// static
+nsIWidget* nsIWidget::LookupRegisteredPluginWindow(uintptr_t aWindowID) {
+#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
+ MOZ_ASSERT_UNREACHABLE(
+ "nsBaseWidget::LookupRegisteredPluginWindow "
+ "not implemented!");
+ return nullptr;
+#else
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(sPluginWidgetList);
+ return sPluginWidgetList->GetWeak((void*)aWindowID);
+#endif
+}
+
+// static
+void nsIWidget::UpdateRegisteredPluginWindowVisibility(
+ uintptr_t aOwnerWidget, nsTArray<uintptr_t>& aPluginIds) {
+#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
+ MOZ_ASSERT_UNREACHABLE(
+ "nsBaseWidget::UpdateRegisteredPluginWindowVisibility"
+ " not implemented!");
+ return;
+#else
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(sPluginWidgetList);
+
+ // Our visible list is associated with a compositor which is associated with
+ // a specific top level window. We use the parent widget during iteration
+ // to skip the plugin widgets owned by other top level windows.
+ for (auto iter = sPluginWidgetList->Iter(); !iter.Done(); iter.Next()) {
+ const void* windowId = iter.Key();
+ nsIWidget* widget = iter.UserData();
+
+ MOZ_ASSERT(windowId);
+ MOZ_ASSERT(widget);
+
+ if (!widget->Destroyed()) {
+ if ((uintptr_t)widget->GetParent() == aOwnerWidget) {
+ widget->Show(aPluginIds.Contains((uintptr_t)windowId));
+ }
+ }
+ }
+#endif
+}
+
+#if defined(XP_WIN)
+// static
+void nsIWidget::CaptureRegisteredPlugins(uintptr_t aOwnerWidget) {
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(sPluginWidgetList);
+
+ // Our visible list is associated with a compositor which is associated with
+ // a specific top level window. We use the parent widget during iteration
+ // to skip the plugin widgets owned by other top level windows.
+ for (auto iter = sPluginWidgetList->Iter(); !iter.Done(); iter.Next()) {
+ DebugOnly<const void*> windowId = iter.Key();
+ nsIWidget* widget = iter.UserData();
+
+ MOZ_ASSERT(windowId);
+ MOZ_ASSERT(widget);
+
+ if (!widget->Destroyed() && widget->IsVisible()) {
+ if ((uintptr_t)widget->GetParent() == aOwnerWidget) {
+ widget->UpdateScrollCapture();
+ }
+ }
+ }
+}
+
+uint64_t nsBaseWidget::CreateScrollCaptureContainer() {
+ mScrollCaptureContainer =
+ LayerManager::CreateImageContainer(ImageContainer::ASYNCHRONOUS);
+ if (!mScrollCaptureContainer) {
+ NS_WARNING("Failed to create ImageContainer for widget image capture.");
+ return ImageContainer::sInvalidAsyncContainerId;
+ }
+
+ return mScrollCaptureContainer->GetAsyncContainerHandle().Value();
+}
+
+void nsBaseWidget::UpdateScrollCapture() {
+ // Don't capture if no container or no size.
+ if (!mScrollCaptureContainer || mBounds.IsEmpty()) {
+ return;
+ }
+
+ // If the derived class cannot take a snapshot, for example due to clipping,
+ // then it is responsible for creating a fallback. If null is returned, this
+ // means that we want to keep the existing snapshot.
+ RefPtr<gfx::SourceSurface> snapshot = CreateScrollSnapshot();
+ if (!snapshot) {
+ return;
+ }
+
+ ImageContainer::NonOwningImage holder(new SourceSurfaceImage(snapshot));
+
+ AutoTArray<ImageContainer::NonOwningImage, 1> imageList;
+ imageList.AppendElement(holder);
+
+ mScrollCaptureContainer->SetCurrentImages(imageList);
+}
+
+void nsBaseWidget::DefaultFillScrollCapture(DrawTarget* aSnapshotDrawTarget) {
+ gfx::IntSize dtSize = aSnapshotDrawTarget->GetSize();
+ aSnapshotDrawTarget->FillRect(
+ gfx::Rect(0, 0, dtSize.width, dtSize.height),
+ gfx::ColorPattern(gfx::ToDeviceColor(kScrollCaptureFillColor)),
+ gfx::DrawOptions(1.f, gfx::CompositionOp::OP_SOURCE));
+ aSnapshotDrawTarget->Flush();
+}
+#endif
+
+const IMENotificationRequests& nsIWidget::IMENotificationRequestsRef() {
+ TextEventDispatcher* dispatcher = GetTextEventDispatcher();
+ return dispatcher->IMENotificationRequestsRef();
+}
+
+nsresult nsIWidget::OnWindowedPluginKeyEvent(
+ const NativeEventData& aKeyEventData,
+ nsIKeyEventInPluginCallback* aCallback) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+void nsIWidget::PostHandleKeyEvent(mozilla::WidgetKeyboardEvent* aEvent) {}
+
+bool nsIWidget::GetEditCommands(nsIWidget::NativeKeyBindingsType aType,
+ const WidgetKeyboardEvent& aEvent,
+ nsTArray<CommandInt>& aCommands) {
+ MOZ_ASSERT(aEvent.IsTrusted());
+ MOZ_ASSERT(aCommands.IsEmpty());
+ return true;
+}
+
+already_AddRefed<nsIBidiKeyboard> nsIWidget::CreateBidiKeyboard() {
+ if (XRE_IsContentProcess()) {
+ return CreateBidiKeyboardContentProcess();
+ }
+ return CreateBidiKeyboardInner();
+}
+
+#ifdef ANDROID
+already_AddRefed<nsIBidiKeyboard> nsIWidget::CreateBidiKeyboardInner() {
+ // no bidi keyboard implementation
+ return nullptr;
+}
+#endif
+
+namespace mozilla::widget {
+
+const char* ToChar(InputContext::Origin aOrigin) {
+ switch (aOrigin) {
+ case InputContext::ORIGIN_MAIN:
+ return "ORIGIN_MAIN";
+ case InputContext::ORIGIN_CONTENT:
+ return "ORIGIN_CONTENT";
+ default:
+ return "Unexpected value";
+ }
+}
+
+const char* ToChar(IMEMessage aIMEMessage) {
+ switch (aIMEMessage) {
+ case NOTIFY_IME_OF_NOTHING:
+ return "NOTIFY_IME_OF_NOTHING";
+ case NOTIFY_IME_OF_FOCUS:
+ return "NOTIFY_IME_OF_FOCUS";
+ case NOTIFY_IME_OF_BLUR:
+ return "NOTIFY_IME_OF_BLUR";
+ case NOTIFY_IME_OF_SELECTION_CHANGE:
+ return "NOTIFY_IME_OF_SELECTION_CHANGE";
+ case NOTIFY_IME_OF_TEXT_CHANGE:
+ return "NOTIFY_IME_OF_TEXT_CHANGE";
+ case NOTIFY_IME_OF_COMPOSITION_EVENT_HANDLED:
+ return "NOTIFY_IME_OF_COMPOSITION_EVENT_HANDLED";
+ case NOTIFY_IME_OF_POSITION_CHANGE:
+ return "NOTIFY_IME_OF_POSITION_CHANGE";
+ case NOTIFY_IME_OF_MOUSE_BUTTON_EVENT:
+ return "NOTIFY_IME_OF_MOUSE_BUTTON_EVENT";
+ case REQUEST_TO_COMMIT_COMPOSITION:
+ return "REQUEST_TO_COMMIT_COMPOSITION";
+ case REQUEST_TO_CANCEL_COMPOSITION:
+ return "REQUEST_TO_CANCEL_COMPOSITION";
+ default:
+ return "Unexpected value";
+ }
+}
+
+void NativeIMEContext::Init(nsIWidget* aWidget) {
+ if (!aWidget) {
+ mRawNativeIMEContext = reinterpret_cast<uintptr_t>(nullptr);
+ mOriginProcessID = static_cast<uint64_t>(-1);
+ return;
+ }
+ if (!XRE_IsContentProcess()) {
+ mRawNativeIMEContext = reinterpret_cast<uintptr_t>(
+ aWidget->GetNativeData(NS_RAW_NATIVE_IME_CONTEXT));
+ mOriginProcessID = 0;
+ return;
+ }
+ // If this is created in a child process, aWidget is an instance of
+ // PuppetWidget which doesn't support NS_RAW_NATIVE_IME_CONTEXT.
+ // Instead of that PuppetWidget::GetNativeIMEContext() returns cached
+ // native IME context of the parent process.
+ *this = aWidget->GetNativeIMEContext();
+}
+
+void NativeIMEContext::InitWithRawNativeIMEContext(void* aRawNativeIMEContext) {
+ if (NS_WARN_IF(!aRawNativeIMEContext)) {
+ mRawNativeIMEContext = reinterpret_cast<uintptr_t>(nullptr);
+ mOriginProcessID = static_cast<uint64_t>(-1);
+ return;
+ }
+ mRawNativeIMEContext = reinterpret_cast<uintptr_t>(aRawNativeIMEContext);
+ mOriginProcessID =
+ XRE_IsContentProcess() ? ContentChild::GetSingleton()->GetID() : 0;
+}
+
+void IMENotification::TextChangeDataBase::MergeWith(
+ const IMENotification::TextChangeDataBase& aOther) {
+ MOZ_ASSERT(aOther.IsValid(), "Merging data must store valid data");
+ MOZ_ASSERT(aOther.mStartOffset <= aOther.mRemovedEndOffset,
+ "end of removed text must be same or larger than start");
+ MOZ_ASSERT(aOther.mStartOffset <= aOther.mAddedEndOffset,
+ "end of added text must be same or larger than start");
+
+ if (!IsValid()) {
+ *this = aOther;
+ return;
+ }
+
+ // |mStartOffset| and |mRemovedEndOffset| represent all replaced or removed
+ // text ranges. I.e., mStartOffset should be the smallest offset of all
+ // modified text ranges in old text. |mRemovedEndOffset| should be the
+ // largest end offset in old text of all modified text ranges.
+ // |mAddedEndOffset| represents the end offset of all inserted text ranges.
+ // I.e., only this is an offset in new text.
+ // In other words, between mStartOffset and |mRemovedEndOffset| of the
+ // premodified text was already removed. And some text whose length is
+ // |mAddedEndOffset - mStartOffset| is inserted to |mStartOffset|. I.e.,
+ // this allows IME to mark dirty the modified text range with |mStartOffset|
+ // and |mRemovedEndOffset| if IME stores all text of the focused editor and
+ // to compute new text length with |mAddedEndOffset| and |mRemovedEndOffset|.
+ // Additionally, IME can retrieve only the text between |mStartOffset| and
+ // |mAddedEndOffset| for updating stored text.
+
+ // For comparing new and old |mStartOffset|/|mRemovedEndOffset| values, they
+ // should be adjusted to be in same text. The |newData.mStartOffset| and
+ // |newData.mRemovedEndOffset| should be computed as in old text because
+ // |mStartOffset| and |mRemovedEndOffset| represent the modified text range
+ // in the old text but even if some text before the values of the newData
+ // has already been modified, the values don't include the changes.
+
+ // For comparing new and old |mAddedEndOffset| values, they should be
+ // adjusted to be in same text. The |oldData.mAddedEndOffset| should be
+ // computed as in the new text because |mAddedEndOffset| indicates the end
+ // offset of inserted text in the new text but |oldData.mAddedEndOffset|
+ // doesn't include any changes of the text before |newData.mAddedEndOffset|.
+
+ const TextChangeDataBase& newData = aOther;
+ const TextChangeDataBase oldData = *this;
+
+ // mCausedOnlyByComposition should be true only when all changes are caused
+ // by composition.
+ mCausedOnlyByComposition =
+ newData.mCausedOnlyByComposition && oldData.mCausedOnlyByComposition;
+
+ // mIncludingChangesWithoutComposition should be true if at least one of
+ // merged changes occurred without composition.
+ mIncludingChangesWithoutComposition =
+ newData.mIncludingChangesWithoutComposition ||
+ oldData.mIncludingChangesWithoutComposition;
+
+ // mIncludingChangesDuringComposition should be true when at least one of
+ // the merged non-composition changes occurred during the latest composition.
+ if (!newData.mCausedOnlyByComposition &&
+ !newData.mIncludingChangesDuringComposition) {
+ MOZ_ASSERT(newData.mIncludingChangesWithoutComposition);
+ MOZ_ASSERT(mIncludingChangesWithoutComposition);
+ // If new change is neither caused by composition nor occurred during
+ // composition, set mIncludingChangesDuringComposition to false because
+ // IME doesn't want outdated text changes as text change during current
+ // composition.
+ mIncludingChangesDuringComposition = false;
+ } else {
+ // Otherwise, set mIncludingChangesDuringComposition to true if either
+ // oldData or newData includes changes during composition.
+ mIncludingChangesDuringComposition =
+ newData.mIncludingChangesDuringComposition ||
+ oldData.mIncludingChangesDuringComposition;
+ }
+
+ if (newData.mStartOffset >= oldData.mAddedEndOffset) {
+ // Case 1:
+ // If new start is after old end offset of added text, it means that text
+ // after the modified range is modified. Like:
+ // added range of old change: +----------+
+ // removed range of new change: +----------+
+ // So, the old start offset is always the smaller offset.
+ mStartOffset = oldData.mStartOffset;
+ // The new end offset of removed text is moved by the old change and we
+ // need to cancel the move of the old change for comparing the offsets in
+ // same text because it doesn't make sensce to compare offsets in different
+ // text.
+ uint32_t newRemovedEndOffsetInOldText =
+ newData.mRemovedEndOffset - oldData.Difference();
+ mRemovedEndOffset =
+ std::max(newRemovedEndOffsetInOldText, oldData.mRemovedEndOffset);
+ // The new end offset of added text is always the larger offset.
+ mAddedEndOffset = newData.mAddedEndOffset;
+ return;
+ }
+
+ if (newData.mStartOffset >= oldData.mStartOffset) {
+ // If new start is in the modified range, it means that new data changes
+ // a part or all of the range.
+ mStartOffset = oldData.mStartOffset;
+ if (newData.mRemovedEndOffset >= oldData.mAddedEndOffset) {
+ // Case 2:
+ // If new end of removed text is greater than old end of added text, it
+ // means that all or a part of modified range modified again and text
+ // after the modified range is also modified. Like:
+ // added range of old change: +----------+
+ // removed range of new change: +----------+
+ // So, the new removed end offset is moved by the old change and we need
+ // to cancel the move of the old change for comparing the offsets in the
+ // same text because it doesn't make sense to compare the offsets in
+ // different text.
+ uint32_t newRemovedEndOffsetInOldText =
+ newData.mRemovedEndOffset - oldData.Difference();
+ mRemovedEndOffset =
+ std::max(newRemovedEndOffsetInOldText, oldData.mRemovedEndOffset);
+ // The old end of added text is replaced by new change. So, it should be
+ // same as the new start. On the other hand, the new added end offset is
+ // always same or larger. Therefore, the merged end offset of added
+ // text should be the new end offset of added text.
+ mAddedEndOffset = newData.mAddedEndOffset;
+ return;
+ }
+
+ // Case 3:
+ // If new end of removed text is less than old end of added text, it means
+ // that only a part of the modified range is modified again. Like:
+ // added range of old change: +------------+
+ // removed range of new change: +-----+
+ // So, the new end offset of removed text should be same as the old end
+ // offset of removed text. Therefore, the merged end offset of removed
+ // text should be the old text change's |mRemovedEndOffset|.
+ mRemovedEndOffset = oldData.mRemovedEndOffset;
+ // The old end of added text is moved by new change. So, we need to cancel
+ // the move of the new change for comparing the offsets in same text.
+ uint32_t oldAddedEndOffsetInNewText =
+ oldData.mAddedEndOffset + newData.Difference();
+ mAddedEndOffset =
+ std::max(newData.mAddedEndOffset, oldAddedEndOffsetInNewText);
+ return;
+ }
+
+ if (newData.mRemovedEndOffset >= oldData.mStartOffset) {
+ // If new end of removed text is greater than old start (and new start is
+ // less than old start), it means that a part of modified range is modified
+ // again and some new text before the modified range is also modified.
+ MOZ_ASSERT(newData.mStartOffset < oldData.mStartOffset,
+ "new start offset should be less than old one here");
+ mStartOffset = newData.mStartOffset;
+ if (newData.mRemovedEndOffset >= oldData.mAddedEndOffset) {
+ // Case 4:
+ // If new end of removed text is greater than old end of added text, it
+ // means that all modified text and text after the modified range is
+ // modified. Like:
+ // added range of old change: +----------+
+ // removed range of new change: +------------------+
+ // So, the new end of removed text is moved by the old change. Therefore,
+ // we need to cancel the move of the old change for comparing the offsets
+ // in same text because it doesn't make sense to compare the offsets in
+ // different text.
+ uint32_t newRemovedEndOffsetInOldText =
+ newData.mRemovedEndOffset - oldData.Difference();
+ mRemovedEndOffset =
+ std::max(newRemovedEndOffsetInOldText, oldData.mRemovedEndOffset);
+ // The old end of added text is replaced by new change. So, the old end
+ // offset of added text is same as new text change's start offset. Then,
+ // new change's end offset of added text is always same or larger than
+ // it. Therefore, merged end offset of added text is always the new end
+ // offset of added text.
+ mAddedEndOffset = newData.mAddedEndOffset;
+ return;
+ }
+
+ // Case 5:
+ // If new end of removed text is less than old end of added text, it
+ // means that only a part of the modified range is modified again. Like:
+ // added range of old change: +----------+
+ // removed range of new change: +----------+
+ // So, the new end of removed text should be same as old end of removed
+ // text for preventing end of removed text to be modified. Therefore,
+ // merged end offset of removed text is always the old end offset of removed
+ // text.
+ mRemovedEndOffset = oldData.mRemovedEndOffset;
+ // The old end of added text is moved by this change. So, we need to
+ // cancel the move of the new change for comparing the offsets in same text
+ // because it doesn't make sense to compare the offsets in different text.
+ uint32_t oldAddedEndOffsetInNewText =
+ oldData.mAddedEndOffset + newData.Difference();
+ mAddedEndOffset =
+ std::max(newData.mAddedEndOffset, oldAddedEndOffsetInNewText);
+ return;
+ }
+
+ // Case 6:
+ // Otherwise, i.e., both new end of added text and new start are less than
+ // old start, text before the modified range is modified. Like:
+ // added range of old change: +----------+
+ // removed range of new change: +----------+
+ MOZ_ASSERT(newData.mStartOffset < oldData.mStartOffset,
+ "new start offset should be less than old one here");
+ mStartOffset = newData.mStartOffset;
+ MOZ_ASSERT(newData.mRemovedEndOffset < oldData.mRemovedEndOffset,
+ "new removed end offset should be less than old one here");
+ mRemovedEndOffset = oldData.mRemovedEndOffset;
+ // The end of added text should be adjusted with the new difference.
+ uint32_t oldAddedEndOffsetInNewText =
+ oldData.mAddedEndOffset + newData.Difference();
+ mAddedEndOffset =
+ std::max(newData.mAddedEndOffset, oldAddedEndOffsetInNewText);
+}
+
+#ifdef DEBUG
+
+// Let's test the code of merging multiple text change data in debug build
+// and crash if one of them fails because this feature is very complex but
+// cannot be tested with mochitest.
+void IMENotification::TextChangeDataBase::Test() {
+ static bool gTestTextChangeEvent = true;
+ if (!gTestTextChangeEvent) {
+ return;
+ }
+ gTestTextChangeEvent = false;
+
+ /****************************************************************************
+ * Case 1
+ ****************************************************************************/
+
+ // Appending text
+ MergeWith(TextChangeData(10, 10, 20, false, false));
+ MergeWith(TextChangeData(20, 20, 35, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 1-1-1: mStartOffset should be the first offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 10, // 20 - (20 - 10)
+ "Test 1-1-2: mRemovedEndOffset should be the first end of removed text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 35,
+ "Test 1-1-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Removing text (longer line -> shorter line)
+ MergeWith(TextChangeData(10, 20, 10, false, false));
+ MergeWith(TextChangeData(10, 30, 10, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 1-2-1: mStartOffset should be the first offset");
+ MOZ_ASSERT(mRemovedEndOffset == 40, // 30 + (10 - 20)
+ "Test 1-2-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "with already removed length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 10,
+ "Test 1-2-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Removing text (shorter line -> longer line)
+ MergeWith(TextChangeData(10, 20, 10, false, false));
+ MergeWith(TextChangeData(10, 15, 10, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 1-3-1: mStartOffset should be the first offset");
+ MOZ_ASSERT(mRemovedEndOffset == 25, // 15 + (10 - 20)
+ "Test 1-3-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "with already removed length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 10,
+ "Test 1-3-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Appending text at different point (not sure if actually occurs)
+ MergeWith(TextChangeData(10, 10, 20, false, false));
+ MergeWith(TextChangeData(55, 55, 60, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 1-4-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 45, // 55 - (10 - 20)
+ "Test 1-4-2: mRemovedEndOffset should be the the largest end of removed "
+ "text without already added length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 60,
+ "Test 1-4-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Removing text at different point (not sure if actually occurs)
+ MergeWith(TextChangeData(10, 20, 10, false, false));
+ MergeWith(TextChangeData(55, 68, 55, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 1-5-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 78, // 68 - (10 - 20)
+ "Test 1-5-2: mRemovedEndOffset should be the the largest end of removed "
+ "text with already removed length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 55,
+ "Test 1-5-3: mAddedEndOffset should be the largest end of added text");
+ Clear();
+
+ // Replacing text and append text (becomes longer)
+ MergeWith(TextChangeData(30, 35, 32, false, false));
+ MergeWith(TextChangeData(32, 32, 40, false, false));
+ MOZ_ASSERT(mStartOffset == 30,
+ "Test 1-6-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 35, // 32 - (32 - 35)
+ "Test 1-6-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 40,
+ "Test 1-6-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Replacing text and append text (becomes shorter)
+ MergeWith(TextChangeData(30, 35, 32, false, false));
+ MergeWith(TextChangeData(32, 32, 33, false, false));
+ MOZ_ASSERT(mStartOffset == 30,
+ "Test 1-7-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 35, // 32 - (32 - 35)
+ "Test 1-7-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 33,
+ "Test 1-7-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Removing text and replacing text after first range (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(30, 35, 30, false, false));
+ MergeWith(TextChangeData(32, 34, 48, false, false));
+ MOZ_ASSERT(mStartOffset == 30,
+ "Test 1-8-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 39, // 34 - (30 - 35)
+ "Test 1-8-2: mRemovedEndOffset should be the the first end of "
+ "removed text "
+ "without already removed text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 48,
+ "Test 1-8-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Removing text and replacing text after first range (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(30, 35, 30, false, false));
+ MergeWith(TextChangeData(32, 38, 36, false, false));
+ MOZ_ASSERT(mStartOffset == 30,
+ "Test 1-9-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 43, // 38 - (30 - 35)
+ "Test 1-9-2: mRemovedEndOffset should be the the first end of "
+ "removed text "
+ "without already removed text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 36,
+ "Test 1-9-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ /****************************************************************************
+ * Case 2
+ ****************************************************************************/
+
+ // Replacing text in around end of added text (becomes shorter) (not sure
+ // if actually occurs)
+ MergeWith(TextChangeData(50, 50, 55, false, false));
+ MergeWith(TextChangeData(53, 60, 54, false, false));
+ MOZ_ASSERT(mStartOffset == 50,
+ "Test 2-1-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 55, // 60 - (55 - 50)
+ "Test 2-1-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already added text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 54,
+ "Test 2-1-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Replacing text around end of added text (becomes longer) (not sure
+ // if actually occurs)
+ MergeWith(TextChangeData(50, 50, 55, false, false));
+ MergeWith(TextChangeData(54, 62, 68, false, false));
+ MOZ_ASSERT(mStartOffset == 50,
+ "Test 2-2-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 57, // 62 - (55 - 50)
+ "Test 2-2-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already added text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 68,
+ "Test 2-2-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Replacing text around end of replaced text (became shorter) (not sure if
+ // actually occurs)
+ MergeWith(TextChangeData(36, 48, 45, false, false));
+ MergeWith(TextChangeData(43, 50, 49, false, false));
+ MOZ_ASSERT(mStartOffset == 36,
+ "Test 2-3-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 53, // 50 - (45 - 48)
+ "Test 2-3-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already removed text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 49,
+ "Test 2-3-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Replacing text around end of replaced text (became longer) (not sure if
+ // actually occurs)
+ MergeWith(TextChangeData(36, 52, 53, false, false));
+ MergeWith(TextChangeData(43, 68, 61, false, false));
+ MOZ_ASSERT(mStartOffset == 36,
+ "Test 2-4-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 67, // 68 - (53 - 52)
+ "Test 2-4-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already added text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 61,
+ "Test 2-4-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ /****************************************************************************
+ * Case 3
+ ****************************************************************************/
+
+ // Appending text in already added text (not sure if actually occurs)
+ MergeWith(TextChangeData(10, 10, 20, false, false));
+ MergeWith(TextChangeData(15, 15, 30, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 3-1-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 10,
+ "Test 3-1-2: mRemovedEndOffset should be the the first end of "
+ "removed text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 35, // 20 + (30 - 15)
+ "Test 3-1-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ // Replacing text in added text (not sure if actually occurs)
+ MergeWith(TextChangeData(50, 50, 55, false, false));
+ MergeWith(TextChangeData(52, 53, 56, false, false));
+ MOZ_ASSERT(mStartOffset == 50,
+ "Test 3-2-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 50,
+ "Test 3-2-2: mRemovedEndOffset should be the the first end of "
+ "removed text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 58, // 55 + (56 - 53)
+ "Test 3-2-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ // Replacing text in replaced text (became shorter) (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(36, 48, 45, false, false));
+ MergeWith(TextChangeData(37, 38, 50, false, false));
+ MOZ_ASSERT(mStartOffset == 36,
+ "Test 3-3-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 48,
+ "Test 3-3-2: mRemovedEndOffset should be the the first end of "
+ "removed text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 57, // 45 + (50 - 38)
+ "Test 3-3-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ // Replacing text in replaced text (became longer) (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(32, 48, 53, false, false));
+ MergeWith(TextChangeData(43, 50, 52, false, false));
+ MOZ_ASSERT(mStartOffset == 32,
+ "Test 3-4-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 48,
+ "Test 3-4-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already added text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 55, // 53 + (52 - 50)
+ "Test 3-4-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ // Replacing text in replaced text (became shorter) (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(36, 48, 50, false, false));
+ MergeWith(TextChangeData(37, 49, 47, false, false));
+ MOZ_ASSERT(mStartOffset == 36,
+ "Test 3-5-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 48,
+ "Test 3-5-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(mAddedEndOffset == 48, // 50 + (47 - 49)
+ "Test 3-5-3: mAddedEndOffset should be the first end of added "
+ "text without "
+ "removed text length by the new change");
+ Clear();
+
+ // Replacing text in replaced text (became longer) (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(32, 48, 53, false, false));
+ MergeWith(TextChangeData(43, 50, 47, false, false));
+ MOZ_ASSERT(mStartOffset == 32,
+ "Test 3-6-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 48,
+ "Test 3-6-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already added text length");
+ MOZ_ASSERT(mAddedEndOffset == 50, // 53 + (47 - 50)
+ "Test 3-6-3: mAddedEndOffset should be the first end of added "
+ "text without "
+ "removed text length by the new change");
+ Clear();
+
+ /****************************************************************************
+ * Case 4
+ ****************************************************************************/
+
+ // Replacing text all of already append text (not sure if actually occurs)
+ MergeWith(TextChangeData(50, 50, 55, false, false));
+ MergeWith(TextChangeData(44, 66, 68, false, false));
+ MOZ_ASSERT(mStartOffset == 44,
+ "Test 4-1-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 61, // 66 - (55 - 50)
+ "Test 4-1-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already added text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 68,
+ "Test 4-1-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Replacing text around a point in which text was removed (not sure if
+ // actually occurs)
+ MergeWith(TextChangeData(50, 62, 50, false, false));
+ MergeWith(TextChangeData(44, 66, 68, false, false));
+ MOZ_ASSERT(mStartOffset == 44,
+ "Test 4-2-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 78, // 66 - (50 - 62)
+ "Test 4-2-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already removed text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 68,
+ "Test 4-2-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Replacing text all replaced text (became shorter) (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(50, 62, 60, false, false));
+ MergeWith(TextChangeData(49, 128, 130, false, false));
+ MOZ_ASSERT(mStartOffset == 49,
+ "Test 4-3-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 130, // 128 - (60 - 62)
+ "Test 4-3-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "without already removed text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 130,
+ "Test 4-3-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ // Replacing text all replaced text (became longer) (not sure if actually
+ // occurs)
+ MergeWith(TextChangeData(50, 61, 73, false, false));
+ MergeWith(TextChangeData(44, 100, 50, false, false));
+ MOZ_ASSERT(mStartOffset == 44,
+ "Test 4-4-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(mRemovedEndOffset == 88, // 100 - (73 - 61)
+ "Test 4-4-2: mRemovedEndOffset should be the the last end of "
+ "removed text "
+ "with already added text length");
+ MOZ_ASSERT(
+ mAddedEndOffset == 50,
+ "Test 4-4-3: mAddedEndOffset should be the last end of added text");
+ Clear();
+
+ /****************************************************************************
+ * Case 5
+ ****************************************************************************/
+
+ // Replacing text around start of added text (not sure if actually occurs)
+ MergeWith(TextChangeData(50, 50, 55, false, false));
+ MergeWith(TextChangeData(48, 52, 49, false, false));
+ MOZ_ASSERT(mStartOffset == 48,
+ "Test 5-1-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 50,
+ "Test 5-1-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 52, // 55 + (52 - 49)
+ "Test 5-1-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ // Replacing text around start of replaced text (became shorter) (not sure if
+ // actually occurs)
+ MergeWith(TextChangeData(50, 60, 58, false, false));
+ MergeWith(TextChangeData(43, 50, 48, false, false));
+ MOZ_ASSERT(mStartOffset == 43,
+ "Test 5-2-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 60,
+ "Test 5-2-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(mAddedEndOffset == 56, // 58 + (48 - 50)
+ "Test 5-2-3: mAddedEndOffset should be the first end of added "
+ "text without "
+ "removed text length by the new change");
+ Clear();
+
+ // Replacing text around start of replaced text (became longer) (not sure if
+ // actually occurs)
+ MergeWith(TextChangeData(50, 60, 68, false, false));
+ MergeWith(TextChangeData(43, 55, 53, false, false));
+ MOZ_ASSERT(mStartOffset == 43,
+ "Test 5-3-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 60,
+ "Test 5-3-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(mAddedEndOffset == 66, // 68 + (53 - 55)
+ "Test 5-3-3: mAddedEndOffset should be the first end of added "
+ "text without "
+ "removed text length by the new change");
+ Clear();
+
+ // Replacing text around start of replaced text (became shorter) (not sure if
+ // actually occurs)
+ MergeWith(TextChangeData(50, 60, 58, false, false));
+ MergeWith(TextChangeData(43, 50, 128, false, false));
+ MOZ_ASSERT(mStartOffset == 43,
+ "Test 5-4-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 60,
+ "Test 5-4-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 136, // 58 + (128 - 50)
+ "Test 5-4-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ // Replacing text around start of replaced text (became longer) (not sure if
+ // actually occurs)
+ MergeWith(TextChangeData(50, 60, 68, false, false));
+ MergeWith(TextChangeData(43, 55, 65, false, false));
+ MOZ_ASSERT(mStartOffset == 43,
+ "Test 5-5-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 60,
+ "Test 5-5-2: mRemovedEndOffset should be the the first end of removed "
+ "text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 78, // 68 + (65 - 55)
+ "Test 5-5-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ /****************************************************************************
+ * Case 6
+ ****************************************************************************/
+
+ // Appending text before already added text (not sure if actually occurs)
+ MergeWith(TextChangeData(30, 30, 45, false, false));
+ MergeWith(TextChangeData(10, 10, 20, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 6-1-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 30,
+ "Test 6-1-2: mRemovedEndOffset should be the the largest end of removed "
+ "text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 55, // 45 + (20 - 10)
+ "Test 6-1-3: mAddedEndOffset should be the first end of added text with "
+ "added text length by the new change");
+ Clear();
+
+ // Removing text before already removed text (not sure if actually occurs)
+ MergeWith(TextChangeData(30, 35, 30, false, false));
+ MergeWith(TextChangeData(10, 25, 10, false, false));
+ MOZ_ASSERT(mStartOffset == 10,
+ "Test 6-2-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 35,
+ "Test 6-2-2: mRemovedEndOffset should be the the largest end of removed "
+ "text");
+ MOZ_ASSERT(
+ mAddedEndOffset == 15, // 30 - (25 - 10)
+ "Test 6-2-3: mAddedEndOffset should be the first end of added text with "
+ "removed text length by the new change");
+ Clear();
+
+ // Replacing text before already replaced text (not sure if actually occurs)
+ MergeWith(TextChangeData(50, 65, 70, false, false));
+ MergeWith(TextChangeData(13, 24, 15, false, false));
+ MOZ_ASSERT(mStartOffset == 13,
+ "Test 6-3-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 65,
+ "Test 6-3-2: mRemovedEndOffset should be the the largest end of removed "
+ "text");
+ MOZ_ASSERT(mAddedEndOffset == 61, // 70 + (15 - 24)
+ "Test 6-3-3: mAddedEndOffset should be the first end of added "
+ "text without "
+ "removed text length by the new change");
+ Clear();
+
+ // Replacing text before already replaced text (not sure if actually occurs)
+ MergeWith(TextChangeData(50, 65, 70, false, false));
+ MergeWith(TextChangeData(13, 24, 36, false, false));
+ MOZ_ASSERT(mStartOffset == 13,
+ "Test 6-4-1: mStartOffset should be the smallest offset");
+ MOZ_ASSERT(
+ mRemovedEndOffset == 65,
+ "Test 6-4-2: mRemovedEndOffset should be the the largest end of removed "
+ "text");
+ MOZ_ASSERT(mAddedEndOffset == 82, // 70 + (36 - 24)
+ "Test 6-4-3: mAddedEndOffset should be the first end of added "
+ "text without "
+ "removed text length by the new change");
+ Clear();
+}
+
+#endif // #ifdef DEBUG
+
+} // namespace mozilla::widget
+
+#ifdef DEBUG
+//////////////////////////////////////////////////////////////
+//
+// Convert a GUI event message code to a string.
+// Makes it a lot easier to debug events.
+//
+// See gtk/nsWidget.cpp and windows/nsWindow.cpp
+// for a DebugPrintEvent() function that uses
+// this.
+//
+//////////////////////////////////////////////////////////////
+/* static */
+nsAutoString nsBaseWidget::debug_GuiEventToString(WidgetGUIEvent* aGuiEvent) {
+ NS_ASSERTION(nullptr != aGuiEvent, "cmon, null gui event.");
+
+ nsAutoString eventName(u"UNKNOWN"_ns);
+
+# define _ASSIGN_eventName(_value, _name) \
+ case _value: \
+ eventName.AssignLiteral(_name); \
+ break
+
+ switch (aGuiEvent->mMessage) {
+ _ASSIGN_eventName(eBlur, "eBlur");
+ _ASSIGN_eventName(eDrop, "eDrop");
+ _ASSIGN_eventName(eDragEnter, "eDragEnter");
+ _ASSIGN_eventName(eDragExit, "eDragExit");
+ _ASSIGN_eventName(eDragOver, "eDragOver");
+ _ASSIGN_eventName(eEditorInput, "eEditorInput");
+ _ASSIGN_eventName(eFocus, "eFocus");
+ _ASSIGN_eventName(eFocusIn, "eFocusIn");
+ _ASSIGN_eventName(eFocusOut, "eFocusOut");
+ _ASSIGN_eventName(eFormSelect, "eFormSelect");
+ _ASSIGN_eventName(eFormChange, "eFormChange");
+ _ASSIGN_eventName(eFormReset, "eFormReset");
+ _ASSIGN_eventName(eFormSubmit, "eFormSubmit");
+ _ASSIGN_eventName(eImageAbort, "eImageAbort");
+ _ASSIGN_eventName(eLoadError, "eLoadError");
+ _ASSIGN_eventName(eKeyDown, "eKeyDown");
+ _ASSIGN_eventName(eKeyPress, "eKeyPress");
+ _ASSIGN_eventName(eKeyUp, "eKeyUp");
+ _ASSIGN_eventName(eMouseEnterIntoWidget, "eMouseEnterIntoWidget");
+ _ASSIGN_eventName(eMouseExitFromWidget, "eMouseExitFromWidget");
+ _ASSIGN_eventName(eMouseDown, "eMouseDown");
+ _ASSIGN_eventName(eMouseUp, "eMouseUp");
+ _ASSIGN_eventName(eMouseClick, "eMouseClick");
+ _ASSIGN_eventName(eMouseAuxClick, "eMouseAuxClick");
+ _ASSIGN_eventName(eMouseDoubleClick, "eMouseDoubleClick");
+ _ASSIGN_eventName(eMouseMove, "eMouseMove");
+ _ASSIGN_eventName(eLoad, "eLoad");
+ _ASSIGN_eventName(ePopState, "ePopState");
+ _ASSIGN_eventName(eBeforeScriptExecute, "eBeforeScriptExecute");
+ _ASSIGN_eventName(eAfterScriptExecute, "eAfterScriptExecute");
+ _ASSIGN_eventName(eUnload, "eUnload");
+ _ASSIGN_eventName(eHashChange, "eHashChange");
+ _ASSIGN_eventName(eReadyStateChange, "eReadyStateChange");
+ _ASSIGN_eventName(eXULBroadcast, "eXULBroadcast");
+ _ASSIGN_eventName(eXULCommandUpdate, "eXULCommandUpdate");
+
+# undef _ASSIGN_eventName
+
+ default: {
+ eventName.AssignLiteral("UNKNOWN: ");
+ eventName.AppendInt(aGuiEvent->mMessage);
+ } break;
+ }
+
+ return nsAutoString(eventName);
+}
+//////////////////////////////////////////////////////////////
+//
+// Code to deal with paint and event debug prefs.
+//
+//////////////////////////////////////////////////////////////
+struct PrefPair {
+ const char* name;
+ bool value;
+};
+
+static PrefPair debug_PrefValues[] = {
+ {"nglayout.debug.crossing_event_dumping", false},
+ {"nglayout.debug.event_dumping", false},
+ {"nglayout.debug.invalidate_dumping", false},
+ {"nglayout.debug.motion_event_dumping", false},
+ {"nglayout.debug.paint_dumping", false},
+ {"nglayout.debug.paint_flashing", false},
+ {"nglayout.debug.paint_flashing_chrome", false}};
+
+//////////////////////////////////////////////////////////////
+bool nsBaseWidget::debug_GetCachedBoolPref(const char* aPrefName) {
+ NS_ASSERTION(nullptr != aPrefName, "cmon, pref name is null.");
+
+ for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++) {
+ if (strcmp(debug_PrefValues[i].name, aPrefName) == 0) {
+ return debug_PrefValues[i].value;
+ }
+ }
+
+ return false;
+}
+//////////////////////////////////////////////////////////////
+static void debug_SetCachedBoolPref(const char* aPrefName, bool aValue) {
+ NS_ASSERTION(nullptr != aPrefName, "cmon, pref name is null.");
+
+ for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++) {
+ if (strcmp(debug_PrefValues[i].name, aPrefName) == 0) {
+ debug_PrefValues[i].value = aValue;
+
+ return;
+ }
+ }
+
+ NS_ASSERTION(false, "cmon, this code is not reached dude.");
+}
+
+//////////////////////////////////////////////////////////////
+class Debug_PrefObserver final : public nsIObserver {
+ ~Debug_PrefObserver() = default;
+
+ public:
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSIOBSERVER
+};
+
+NS_IMPL_ISUPPORTS(Debug_PrefObserver, nsIObserver)
+
+NS_IMETHODIMP
+Debug_PrefObserver::Observe(nsISupports* subject, const char* topic,
+ const char16_t* data) {
+ NS_ConvertUTF16toUTF8 prefName(data);
+
+ bool value = Preferences::GetBool(prefName.get(), false);
+ debug_SetCachedBoolPref(prefName.get(), value);
+ return NS_OK;
+}
+
+//////////////////////////////////////////////////////////////
+/* static */ void debug_RegisterPrefCallbacks() {
+ static bool once = true;
+
+ if (!once) {
+ return;
+ }
+
+ once = false;
+
+ nsCOMPtr<nsIObserver> obs(new Debug_PrefObserver());
+ for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++) {
+ // Initialize the pref values
+ debug_PrefValues[i].value =
+ Preferences::GetBool(debug_PrefValues[i].name, false);
+
+ if (obs) {
+ // Register callbacks for when these change
+ nsCString name;
+ name.AssignLiteral(debug_PrefValues[i].name,
+ strlen(debug_PrefValues[i].name));
+ Preferences::AddStrongObserver(obs, name);
+ }
+ }
+}
+//////////////////////////////////////////////////////////////
+static int32_t _GetPrintCount() {
+ static int32_t sCount = 0;
+
+ return ++sCount;
+}
+//////////////////////////////////////////////////////////////
+/* static */
+bool nsBaseWidget::debug_WantPaintFlashing() {
+ return debug_GetCachedBoolPref("nglayout.debug.paint_flashing");
+}
+//////////////////////////////////////////////////////////////
+/* static */
+void nsBaseWidget::debug_DumpEvent(FILE* aFileOut, nsIWidget* aWidget,
+ WidgetGUIEvent* aGuiEvent,
+ const char* aWidgetName, int32_t aWindowID) {
+ if (aGuiEvent->mMessage == eMouseMove) {
+ if (!debug_GetCachedBoolPref("nglayout.debug.motion_event_dumping")) return;
+ }
+
+ if (aGuiEvent->mMessage == eMouseEnterIntoWidget ||
+ aGuiEvent->mMessage == eMouseExitFromWidget) {
+ if (!debug_GetCachedBoolPref("nglayout.debug.crossing_event_dumping"))
+ return;
+ }
+
+ if (!debug_GetCachedBoolPref("nglayout.debug.event_dumping")) return;
+
+ NS_LossyConvertUTF16toASCII tempString(
+ debug_GuiEventToString(aGuiEvent).get());
+
+ fprintf(aFileOut, "%4d %-26s widget=%-8p name=%-12s id=0x%-6x refpt=%d,%d\n",
+ _GetPrintCount(), tempString.get(), (void*)aWidget, aWidgetName,
+ aWindowID, aGuiEvent->mRefPoint.x, aGuiEvent->mRefPoint.y);
+}
+//////////////////////////////////////////////////////////////
+/* static */
+void nsBaseWidget::debug_DumpPaintEvent(FILE* aFileOut, nsIWidget* aWidget,
+ const nsIntRegion& aRegion,
+ const char* aWidgetName,
+ int32_t aWindowID) {
+ NS_ASSERTION(nullptr != aFileOut, "cmon, null output FILE");
+ NS_ASSERTION(nullptr != aWidget, "cmon, the widget is null");
+
+ if (!debug_GetCachedBoolPref("nglayout.debug.paint_dumping")) return;
+
+ nsIntRect rect = aRegion.GetBounds();
+ fprintf(aFileOut,
+ "%4d PAINT widget=%p name=%-12s id=0x%-6x bounds-rect=%3d,%-3d "
+ "%3d,%-3d",
+ _GetPrintCount(), (void*)aWidget, aWidgetName, aWindowID, rect.X(),
+ rect.Y(), rect.Width(), rect.Height());
+
+ fprintf(aFileOut, "\n");
+}
+//////////////////////////////////////////////////////////////
+/* static */
+void nsBaseWidget::debug_DumpInvalidate(FILE* aFileOut, nsIWidget* aWidget,
+ const LayoutDeviceIntRect* aRect,
+ const char* aWidgetName,
+ int32_t aWindowID) {
+ if (!debug_GetCachedBoolPref("nglayout.debug.invalidate_dumping")) return;
+
+ NS_ASSERTION(nullptr != aFileOut, "cmon, null output FILE");
+ NS_ASSERTION(nullptr != aWidget, "cmon, the widget is null");
+
+ fprintf(aFileOut, "%4d Invalidate widget=%p name=%-12s id=0x%-6x",
+ _GetPrintCount(), (void*)aWidget, aWidgetName, aWindowID);
+
+ if (aRect) {
+ fprintf(aFileOut, " rect=%3d,%-3d %3d,%-3d", aRect->X(), aRect->Y(),
+ aRect->Width(), aRect->Height());
+ } else {
+ fprintf(aFileOut, " rect=%-15s", "none");
+ }
+
+ fprintf(aFileOut, "\n");
+}
+//////////////////////////////////////////////////////////////
+
+#endif // DEBUG
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 16:59:57 +0000