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Diffstat (limited to 'docshell/base/nsDocShellTreeOwner.cpp')
| -rw-r--r-- | docshell/base/nsDocShellTreeOwner.cpp | 1340 |
1 files changed, 1340 insertions, 0 deletions
diff --git a/docshell/base/nsDocShellTreeOwner.cpp b/docshell/base/nsDocShellTreeOwner.cpp new file mode 100644 index 0000000000..b49dfb6343 --- /dev/null +++ b/docshell/base/nsDocShellTreeOwner.cpp @@ -0,0 +1,1340 @@ +/* -*- 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/. */ + +// Local Includes +#include "nsDocShellTreeOwner.h" +#include "nsWebBrowser.h" + +// Helper Classes +#include "nsContentUtils.h" +#include "nsSize.h" +#include "mozilla/ReflowInput.h" +#include "mozilla/ScopeExit.h" +#include "nsComponentManagerUtils.h" +#include "nsString.h" +#include "nsAtom.h" +#include "nsReadableUtils.h" +#include "nsUnicharUtils.h" +#include "mozilla/LookAndFeel.h" + +// Interfaces needed to be included +#include "nsPresContext.h" +#include "nsITooltipListener.h" +#include "nsINode.h" +#include "Link.h" +#include "mozilla/dom/Document.h" +#include "mozilla/dom/Element.h" +#include "mozilla/dom/MouseEvent.h" +#include "mozilla/dom/SVGTitleElement.h" +#include "nsIFormControl.h" +#include "nsIWebNavigation.h" +#include "nsPIDOMWindow.h" +#include "nsPIWindowRoot.h" +#include "nsIWindowWatcher.h" +#include "nsPIWindowWatcher.h" +#include "nsIPrompt.h" +#include "nsIRemoteTab.h" +#include "nsIBrowserChild.h" +#include "nsRect.h" +#include "nsIWebBrowserChromeFocus.h" +#include "nsIContent.h" +#include "nsServiceManagerUtils.h" +#include "nsViewManager.h" +#include "nsView.h" +#include "nsXULTooltipListener.h" +#include "nsIConstraintValidation.h" +#include "mozilla/Attributes.h" +#include "mozilla/EventListenerManager.h" +#include "mozilla/dom/DragEvent.h" +#include "mozilla/dom/Event.h" // for Event +#include "mozilla/dom/File.h" // for input type=file +#include "mozilla/dom/FileList.h" // for input type=file +#include "mozilla/dom/LoadURIOptionsBinding.h" +#include "mozilla/PresShell.h" +#include "mozilla/TextEvents.h" + +using namespace mozilla; +using namespace mozilla::dom; + +// A helper routine that navigates the tricky path from a |nsWebBrowser| to +// a |EventTarget| via the window root and chrome event handler. +static nsresult GetDOMEventTarget(nsWebBrowser* aInBrowser, + EventTarget** aTarget) { + if (!aInBrowser) { + return NS_ERROR_INVALID_POINTER; + } + + nsCOMPtr<mozIDOMWindowProxy> domWindow; + aInBrowser->GetContentDOMWindow(getter_AddRefs(domWindow)); + if (!domWindow) { + return NS_ERROR_FAILURE; + } + + auto* outerWindow = nsPIDOMWindowOuter::From(domWindow); + nsPIDOMWindowOuter* rootWindow = outerWindow->GetPrivateRoot(); + NS_ENSURE_TRUE(rootWindow, NS_ERROR_FAILURE); + nsCOMPtr<EventTarget> target = rootWindow->GetChromeEventHandler(); + NS_ENSURE_TRUE(target, NS_ERROR_FAILURE); + target.forget(aTarget); + + return NS_OK; +} + +nsDocShellTreeOwner::nsDocShellTreeOwner() + : mWebBrowser(nullptr), + mTreeOwner(nullptr), + mPrimaryContentShell(nullptr), + mWebBrowserChrome(nullptr), + mOwnerWin(nullptr), + mOwnerRequestor(nullptr) {} + +nsDocShellTreeOwner::~nsDocShellTreeOwner() { RemoveChromeListeners(); } + +NS_IMPL_ADDREF(nsDocShellTreeOwner) +NS_IMPL_RELEASE(nsDocShellTreeOwner) + +NS_INTERFACE_MAP_BEGIN(nsDocShellTreeOwner) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocShellTreeOwner) + NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeOwner) + NS_INTERFACE_MAP_ENTRY(nsIBaseWindow) + NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor) + NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener) + NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener) + NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference) +NS_INTERFACE_MAP_END + +// The class that listens to the chrome events and tells the embedding chrome to +// show tooltips, as appropriate. Handles registering itself with the DOM with +// AddChromeListeners() and removing itself with RemoveChromeListeners(). +class ChromeTooltipListener final : public nsIDOMEventListener { + protected: + virtual ~ChromeTooltipListener(); + + public: + NS_DECL_ISUPPORTS + + ChromeTooltipListener(nsWebBrowser* aInBrowser, + nsIWebBrowserChrome* aInChrome); + + NS_DECL_NSIDOMEVENTLISTENER + NS_IMETHOD MouseMove(mozilla::dom::Event* aMouseEvent); + + // Add/remove the relevant listeners, based on what interfaces the embedding + // chrome implements. + NS_IMETHOD AddChromeListeners(); + NS_IMETHOD RemoveChromeListeners(); + + NS_IMETHOD HideTooltip(); + + bool WebProgressShowedTooltip(nsIWebProgress* aWebProgress); + + private: + // pixel tolerance for mousemove event + static constexpr CSSIntCoord kTooltipMouseMoveTolerance = 7; + + NS_IMETHOD AddTooltipListener(); + NS_IMETHOD RemoveTooltipListener(); + + NS_IMETHOD ShowTooltip(int32_t aInXCoords, int32_t aInYCoords, + const nsAString& aInTipText, + const nsAString& aDirText); + nsITooltipTextProvider* GetTooltipTextProvider(); + + nsWebBrowser* mWebBrowser; + nsCOMPtr<mozilla::dom::EventTarget> mEventTarget; + nsCOMPtr<nsITooltipTextProvider> mTooltipTextProvider; + + // This must be a strong ref in order to make sure we can hide the tooltip if + // the window goes away while we're displaying one. If we don't hold a strong + // ref, the chrome might have been disposed of before we get a chance to tell + // it, and no one would ever tell us of that fact. + nsCOMPtr<nsIWebBrowserChrome> mWebBrowserChrome; + + bool mTooltipListenerInstalled; + + nsCOMPtr<nsITimer> mTooltipTimer; + static void sTooltipCallback(nsITimer* aTimer, void* aListener); + + // Mouse coordinates for last mousemove event we saw + CSSIntPoint mMouseClientPoint; + + // Mouse coordinates for tooltip event + LayoutDeviceIntPoint mMouseScreenPoint; + + bool mShowingTooltip; + + bool mTooltipShownOnce; + + // The string of text that we last displayed. + nsString mLastShownTooltipText; + + nsWeakPtr mLastDocshell; + + // The node hovered over that fired the timer. This may turn into the node + // that triggered the tooltip, but only if the timer ever gets around to + // firing. This is a strong reference, because the tooltip content can be + // destroyed while we're waiting for the tooltip to pop up, and we need to + // detect that. It's set only when the tooltip timer is created and launched. + // The timer must either fire or be cancelled (or possibly released?), and we + // release this reference in each of those cases. So we don't leak. + nsCOMPtr<nsINode> mPossibleTooltipNode; +}; + +//***************************************************************************** +// nsDocShellTreeOwner::nsIInterfaceRequestor +//***************************************************************************** + +NS_IMETHODIMP +nsDocShellTreeOwner::GetInterface(const nsIID& aIID, void** aSink) { + NS_ENSURE_ARG_POINTER(aSink); + + if (NS_SUCCEEDED(QueryInterface(aIID, aSink))) { + return NS_OK; + } + + if (aIID.Equals(NS_GET_IID(nsIWebBrowserChromeFocus))) { + if (mWebBrowserChromeWeak != nullptr) { + return mWebBrowserChromeWeak->QueryReferent(aIID, aSink); + } + return mOwnerWin->QueryInterface(aIID, aSink); + } + + if (aIID.Equals(NS_GET_IID(nsIPrompt))) { + nsCOMPtr<nsIPrompt> prompt; + EnsurePrompter(); + prompt = mPrompter; + if (prompt) { + prompt.forget(aSink); + return NS_OK; + } + return NS_NOINTERFACE; + } + + if (aIID.Equals(NS_GET_IID(nsIAuthPrompt))) { + nsCOMPtr<nsIAuthPrompt> prompt; + EnsureAuthPrompter(); + prompt = mAuthPrompter; + if (prompt) { + prompt.forget(aSink); + return NS_OK; + } + return NS_NOINTERFACE; + } + + nsCOMPtr<nsIInterfaceRequestor> req = GetOwnerRequestor(); + if (req) { + return req->GetInterface(aIID, aSink); + } + + return NS_NOINTERFACE; +} + +//***************************************************************************** +// nsDocShellTreeOwner::nsIDocShellTreeOwner +//***************************************************************************** + +void nsDocShellTreeOwner::EnsurePrompter() { + if (mPrompter) { + return; + } + + nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID)); + if (wwatch && mWebBrowser) { + nsCOMPtr<mozIDOMWindowProxy> domWindow; + mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow)); + if (domWindow) { + wwatch->GetNewPrompter(domWindow, getter_AddRefs(mPrompter)); + } + } +} + +void nsDocShellTreeOwner::EnsureAuthPrompter() { + if (mAuthPrompter) { + return; + } + + nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID)); + if (wwatch && mWebBrowser) { + nsCOMPtr<mozIDOMWindowProxy> domWindow; + mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow)); + if (domWindow) { + wwatch->GetNewAuthPrompter(domWindow, getter_AddRefs(mAuthPrompter)); + } + } +} + +void nsDocShellTreeOwner::AddToWatcher() { + if (mWebBrowser) { + nsCOMPtr<mozIDOMWindowProxy> domWindow; + mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow)); + if (domWindow) { + nsCOMPtr<nsPIWindowWatcher> wwatch( + do_GetService(NS_WINDOWWATCHER_CONTRACTID)); + if (wwatch) { + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome(); + if (webBrowserChrome) { + wwatch->AddWindow(domWindow, webBrowserChrome); + } + } + } + } +} + +void nsDocShellTreeOwner::RemoveFromWatcher() { + if (mWebBrowser) { + nsCOMPtr<mozIDOMWindowProxy> domWindow; + mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow)); + if (domWindow) { + nsCOMPtr<nsPIWindowWatcher> wwatch( + do_GetService(NS_WINDOWWATCHER_CONTRACTID)); + if (wwatch) { + wwatch->RemoveWindow(domWindow); + } + } + } +} + +void nsDocShellTreeOwner::EnsureContentTreeOwner() { + if (mContentTreeOwner) { + return; + } + + mContentTreeOwner = new nsDocShellTreeOwner(); + nsCOMPtr<nsIWebBrowserChrome> browserChrome = GetWebBrowserChrome(); + if (browserChrome) { + mContentTreeOwner->SetWebBrowserChrome(browserChrome); + } + + if (mWebBrowser) { + mContentTreeOwner->WebBrowser(mWebBrowser); + } +} + +NS_IMETHODIMP +nsDocShellTreeOwner::ContentShellAdded(nsIDocShellTreeItem* aContentShell, + bool aPrimary) { + if (mTreeOwner) return mTreeOwner->ContentShellAdded(aContentShell, aPrimary); + + EnsureContentTreeOwner(); + aContentShell->SetTreeOwner(mContentTreeOwner); + + if (aPrimary) { + mPrimaryContentShell = aContentShell; + mPrimaryRemoteTab = nullptr; + } + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::ContentShellRemoved(nsIDocShellTreeItem* aContentShell) { + if (mTreeOwner) { + return mTreeOwner->ContentShellRemoved(aContentShell); + } + + if (mPrimaryContentShell == aContentShell) { + mPrimaryContentShell = nullptr; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetPrimaryContentShell(nsIDocShellTreeItem** aShell) { + NS_ENSURE_ARG_POINTER(aShell); + + if (mTreeOwner) { + return mTreeOwner->GetPrimaryContentShell(aShell); + } + + nsCOMPtr<nsIDocShellTreeItem> shell; + if (!mPrimaryRemoteTab) { + shell = + mPrimaryContentShell ? mPrimaryContentShell : mWebBrowser->mDocShell; + } + shell.forget(aShell); + + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::RemoteTabAdded(nsIRemoteTab* aTab, bool aPrimary) { + if (mTreeOwner) { + return mTreeOwner->RemoteTabAdded(aTab, aPrimary); + } + + if (aPrimary) { + mPrimaryRemoteTab = aTab; + mPrimaryContentShell = nullptr; + } else if (mPrimaryRemoteTab == aTab) { + mPrimaryRemoteTab = nullptr; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::RemoteTabRemoved(nsIRemoteTab* aTab) { + if (mTreeOwner) { + return mTreeOwner->RemoteTabRemoved(aTab); + } + + if (aTab == mPrimaryRemoteTab) { + mPrimaryRemoteTab = nullptr; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetPrimaryRemoteTab(nsIRemoteTab** aTab) { + if (mTreeOwner) { + return mTreeOwner->GetPrimaryRemoteTab(aTab); + } + + nsCOMPtr<nsIRemoteTab> tab = mPrimaryRemoteTab; + tab.forget(aTab); + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetPrimaryContentBrowsingContext( + mozilla::dom::BrowsingContext** aBc) { + if (mTreeOwner) { + return mTreeOwner->GetPrimaryContentBrowsingContext(aBc); + } + if (mPrimaryRemoteTab) { + return mPrimaryRemoteTab->GetBrowsingContext(aBc); + } + if (mPrimaryContentShell) { + return mPrimaryContentShell->GetBrowsingContextXPCOM(aBc); + } + if (mWebBrowser->mDocShell) { + return mWebBrowser->mDocShell->GetBrowsingContextXPCOM(aBc); + } + *aBc = nullptr; + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetPrimaryContentSize(int32_t* aWidth, int32_t* aHeight) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetPrimaryContentSize(int32_t aWidth, int32_t aHeight) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetRootShellSize(int32_t* aWidth, int32_t* aHeight) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetRootShellSize(int32_t aWidth, int32_t aHeight) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SizeShellTo(nsIDocShellTreeItem* aShellItem, int32_t aCX, + int32_t aCY) { + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome(); + + NS_ENSURE_STATE(mTreeOwner || webBrowserChrome); + + if (nsCOMPtr<nsIDocShellTreeOwner> treeOwner = mTreeOwner) { + return treeOwner->SizeShellTo(aShellItem, aCX, aCY); + } + + if (aShellItem == mWebBrowser->mDocShell) { + nsCOMPtr<nsIBrowserChild> browserChild = + do_QueryInterface(webBrowserChrome); + if (browserChild) { + // The XUL window to resize is in the parent process, but there we + // won't be able to get the size of aShellItem. We can ask the parent + // process to change our size instead. + nsCOMPtr<nsIBaseWindow> shellAsWin(do_QueryInterface(aShellItem)); + NS_ENSURE_TRUE(shellAsWin, NS_ERROR_FAILURE); + + LayoutDeviceIntSize shellSize; + shellAsWin->GetSize(&shellSize.width, &shellSize.height); + LayoutDeviceIntSize deltaSize = LayoutDeviceIntSize(aCX, aCY) - shellSize; + + LayoutDeviceIntSize currentSize; + GetSize(¤tSize.width, ¤tSize.height); + + LayoutDeviceIntSize newSize = currentSize + deltaSize; + return SetSize(newSize.width, newSize.height, true); + } + // XXX: this is weird, but we used to call a method here + // (webBrowserChrome->SizeBrowserTo()) whose implementations all failed + // like this, so... + return NS_ERROR_NOT_IMPLEMENTED; + } + + MOZ_ASSERT_UNREACHABLE("This is unimplemented, API should be cleaned up"); + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetPersistence(bool aPersistPosition, bool aPersistSize, + bool aPersistSizeMode) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetPersistence(bool* aPersistPosition, bool* aPersistSize, + bool* aPersistSizeMode) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetTabCount(uint32_t* aResult) { + if (mTreeOwner) { + return mTreeOwner->GetTabCount(aResult); + } + + *aResult = 0; + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetHasPrimaryContent(bool* aResult) { + *aResult = mPrimaryRemoteTab || mPrimaryContentShell; + return NS_OK; +} + +//***************************************************************************** +// nsDocShellTreeOwner::nsIBaseWindow +//***************************************************************************** + +NS_IMETHODIMP +nsDocShellTreeOwner::InitWindow(nativeWindow aParentNativeWindow, + nsIWidget* aParentWidget, int32_t aX, + int32_t aY, int32_t aCX, int32_t aCY) { + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::Destroy() { + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome(); + if (webBrowserChrome) { + // XXX: this is weird, but we used to call a method here + // (webBrowserChrome->DestroyBrowserWindow()) whose implementations all + // failed like this, so... + return NS_ERROR_NOT_IMPLEMENTED; + } + + return NS_ERROR_NULL_POINTER; +} + +double nsDocShellTreeOwner::GetWidgetCSSToDeviceScale() { + return mWebBrowser ? mWebBrowser->GetWidgetCSSToDeviceScale() : 1.0; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetDevicePixelsPerDesktopPixel(double* aScale) { + if (mWebBrowser) { + return mWebBrowser->GetDevicePixelsPerDesktopPixel(aScale); + } + + *aScale = 1.0; + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetPositionDesktopPix(int32_t aX, int32_t aY) { + if (mWebBrowser) { + nsresult rv = mWebBrowser->SetPositionDesktopPix(aX, aY); + NS_ENSURE_SUCCESS(rv, rv); + } + + double scale = 1.0; + GetDevicePixelsPerDesktopPixel(&scale); + return SetPosition(NSToIntRound(aX * scale), NSToIntRound(aY * scale)); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetPosition(int32_t aX, int32_t aY) { + return SetDimensions( + {DimensionKind::Outer, Some(aX), Some(aY), Nothing(), Nothing()}); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetPosition(int32_t* aX, int32_t* aY) { + return GetDimensions(DimensionKind::Outer, aX, aY, nullptr, nullptr); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetSize(int32_t aCX, int32_t aCY, bool aRepaint) { + return SetDimensions( + {DimensionKind::Outer, Nothing(), Nothing(), Some(aCX), Some(aCY)}); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetSize(int32_t* aCX, int32_t* aCY) { + return GetDimensions(DimensionKind::Outer, nullptr, nullptr, aCX, aCY); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetPositionAndSize(int32_t aX, int32_t aY, int32_t aCX, + int32_t aCY, uint32_t aFlags) { + return SetDimensions( + {DimensionKind::Outer, Some(aX), Some(aY), Some(aCX), Some(aCY)}); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetPositionAndSize(int32_t* aX, int32_t* aY, int32_t* aCX, + int32_t* aCY) { + return GetDimensions(DimensionKind::Outer, aX, aY, aCX, aCY); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetDimensions(DimensionRequest&& aRequest) { + nsCOMPtr<nsIBaseWindow> ownerWin = GetOwnerWin(); + if (ownerWin) { + return ownerWin->SetDimensions(std::move(aRequest)); + } + + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome(); + NS_ENSURE_STATE(webBrowserChrome); + return webBrowserChrome->SetDimensions(std::move(aRequest)); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetDimensions(DimensionKind aDimensionKind, int32_t* aX, + int32_t* aY, int32_t* aCX, int32_t* aCY) { + nsCOMPtr<nsIBaseWindow> ownerWin = GetOwnerWin(); + if (ownerWin) { + return ownerWin->GetDimensions(aDimensionKind, aX, aY, aCX, aCY); + } + + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome(); + NS_ENSURE_STATE(webBrowserChrome); + return webBrowserChrome->GetDimensions(aDimensionKind, aX, aY, aCX, aCY); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::Repaint(bool aForce) { return NS_ERROR_NULL_POINTER; } + +NS_IMETHODIMP +nsDocShellTreeOwner::GetParentWidget(nsIWidget** aParentWidget) { + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetParentWidget(nsIWidget* aParentWidget) { + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetParentNativeWindow(nativeWindow* aParentNativeWindow) { + nsCOMPtr<nsIBaseWindow> ownerWin = GetOwnerWin(); + if (ownerWin) { + return ownerWin->GetParentNativeWindow(aParentNativeWindow); + } + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetParentNativeWindow(nativeWindow aParentNativeWindow) { + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetNativeHandle(nsAString& aNativeHandle) { + // the nativeHandle should be accessed from nsIAppWindow + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetVisibility(bool* aVisibility) { + nsCOMPtr<nsIBaseWindow> ownerWin = GetOwnerWin(); + if (ownerWin) { + return ownerWin->GetVisibility(aVisibility); + } + + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetVisibility(bool aVisibility) { + nsCOMPtr<nsIBaseWindow> ownerWin = GetOwnerWin(); + if (ownerWin) { + return ownerWin->SetVisibility(aVisibility); + } + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetEnabled(bool* aEnabled) { + NS_ENSURE_ARG_POINTER(aEnabled); + *aEnabled = true; + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetEnabled(bool aEnabled) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetMainWidget(nsIWidget** aMainWidget) { + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::GetTitle(nsAString& aTitle) { + nsCOMPtr<nsIBaseWindow> ownerWin = GetOwnerWin(); + if (ownerWin) { + return ownerWin->GetTitle(aTitle); + } + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetTitle(const nsAString& aTitle) { + nsCOMPtr<nsIBaseWindow> ownerWin = GetOwnerWin(); + if (ownerWin) { + return ownerWin->SetTitle(aTitle); + } + return NS_ERROR_NULL_POINTER; +} + +//***************************************************************************** +// nsDocShellTreeOwner::nsIWebProgressListener +//***************************************************************************** + +NS_IMETHODIMP +nsDocShellTreeOwner::OnProgressChange(nsIWebProgress* aProgress, + nsIRequest* aRequest, + int32_t aCurSelfProgress, + int32_t aMaxSelfProgress, + int32_t aCurTotalProgress, + int32_t aMaxTotalProgress) { + // In the absence of DOM document creation event, this method is the + // most convenient place to install the mouse listener on the + // DOM document. + return AddChromeListeners(); +} + +NS_IMETHODIMP +nsDocShellTreeOwner::OnStateChange(nsIWebProgress* aProgress, + nsIRequest* aRequest, + uint32_t aProgressStateFlags, + nsresult aStatus) { + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::OnLocationChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, nsIURI* aURI, + uint32_t aFlags) { + if (mChromeTooltipListener && aWebProgress && + !(aFlags & nsIWebProgressListener::LOCATION_CHANGE_SAME_DOCUMENT) && + mChromeTooltipListener->WebProgressShowedTooltip(aWebProgress)) { + mChromeTooltipListener->HideTooltip(); + } + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::OnStatusChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, nsresult aStatus, + const char16_t* aMessage) { + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::OnSecurityChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, uint32_t aState) { + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::OnContentBlockingEvent(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, + uint32_t aEvent) { + return NS_OK; +} + +//***************************************************************************** +// nsDocShellTreeOwner: Accessors +//***************************************************************************** + +void nsDocShellTreeOwner::WebBrowser(nsWebBrowser* aWebBrowser) { + if (!aWebBrowser) { + RemoveChromeListeners(); + } + if (aWebBrowser != mWebBrowser) { + mPrompter = nullptr; + mAuthPrompter = nullptr; + } + + mWebBrowser = aWebBrowser; + + if (mContentTreeOwner) { + mContentTreeOwner->WebBrowser(aWebBrowser); + if (!aWebBrowser) { + mContentTreeOwner = nullptr; + } + } +} + +nsWebBrowser* nsDocShellTreeOwner::WebBrowser() { return mWebBrowser; } + +NS_IMETHODIMP +nsDocShellTreeOwner::SetTreeOwner(nsIDocShellTreeOwner* aTreeOwner) { + if (aTreeOwner) { + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome(do_GetInterface(aTreeOwner)); + NS_ENSURE_TRUE(webBrowserChrome, NS_ERROR_INVALID_ARG); + NS_ENSURE_SUCCESS(SetWebBrowserChrome(webBrowserChrome), + NS_ERROR_INVALID_ARG); + mTreeOwner = aTreeOwner; + } else { + mTreeOwner = nullptr; + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome(); + if (!webBrowserChrome) { + NS_ENSURE_SUCCESS(SetWebBrowserChrome(nullptr), NS_ERROR_FAILURE); + } + } + + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::SetWebBrowserChrome( + nsIWebBrowserChrome* aWebBrowserChrome) { + if (!aWebBrowserChrome) { + mWebBrowserChrome = nullptr; + mOwnerWin = nullptr; + mOwnerRequestor = nullptr; + mWebBrowserChromeWeak = nullptr; + } else { + nsCOMPtr<nsISupportsWeakReference> supportsweak = + do_QueryInterface(aWebBrowserChrome); + if (supportsweak) { + supportsweak->GetWeakReference(getter_AddRefs(mWebBrowserChromeWeak)); + } else { + nsCOMPtr<nsIBaseWindow> ownerWin(do_QueryInterface(aWebBrowserChrome)); + nsCOMPtr<nsIInterfaceRequestor> requestor( + do_QueryInterface(aWebBrowserChrome)); + + // it's ok for ownerWin or requestor to be null. + mWebBrowserChrome = aWebBrowserChrome; + mOwnerWin = ownerWin; + mOwnerRequestor = requestor; + } + } + + if (mContentTreeOwner) { + mContentTreeOwner->SetWebBrowserChrome(aWebBrowserChrome); + } + + return NS_OK; +} + +// Hook up things to the chrome like context menus and tooltips, if the chrome +// has implemented the right interfaces. +NS_IMETHODIMP +nsDocShellTreeOwner::AddChromeListeners() { + nsresult rv = NS_OK; + + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome(); + if (!webBrowserChrome) { + return NS_ERROR_FAILURE; + } + + // install tooltips + if (!mChromeTooltipListener) { + nsCOMPtr<nsITooltipListener> tooltipListener( + do_QueryInterface(webBrowserChrome)); + if (tooltipListener) { + mChromeTooltipListener = + new ChromeTooltipListener(mWebBrowser, webBrowserChrome); + rv = mChromeTooltipListener->AddChromeListeners(); + } + } + + nsCOMPtr<EventTarget> target; + GetDOMEventTarget(mWebBrowser, getter_AddRefs(target)); + + // register dragover and drop event listeners with the listener manager + MOZ_ASSERT(target, "how does this happen? (see bug 1659758)"); + if (target) { + if (EventListenerManager* elmP = target->GetOrCreateListenerManager()) { + elmP->AddEventListenerByType(this, u"dragover"_ns, + TrustedEventsAtSystemGroupBubble()); + elmP->AddEventListenerByType(this, u"drop"_ns, + TrustedEventsAtSystemGroupBubble()); + } + } + + return rv; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::RemoveChromeListeners() { + if (mChromeTooltipListener) { + mChromeTooltipListener->RemoveChromeListeners(); + mChromeTooltipListener = nullptr; + } + + nsCOMPtr<EventTarget> piTarget; + GetDOMEventTarget(mWebBrowser, getter_AddRefs(piTarget)); + if (!piTarget) { + return NS_OK; + } + + EventListenerManager* elmP = piTarget->GetOrCreateListenerManager(); + if (elmP) { + elmP->RemoveEventListenerByType(this, u"dragover"_ns, + TrustedEventsAtSystemGroupBubble()); + elmP->RemoveEventListenerByType(this, u"drop"_ns, + TrustedEventsAtSystemGroupBubble()); + } + + return NS_OK; +} + +NS_IMETHODIMP +nsDocShellTreeOwner::HandleEvent(Event* aEvent) { + DragEvent* dragEvent = aEvent ? aEvent->AsDragEvent() : nullptr; + if (NS_WARN_IF(!dragEvent)) { + return NS_ERROR_INVALID_ARG; + } + + if (dragEvent->DefaultPrevented()) { + return NS_OK; + } + + nsCOMPtr<nsIDroppedLinkHandler> handler = + do_GetService("@mozilla.org/content/dropped-link-handler;1"); + if (!handler) { + return NS_OK; + } + + nsAutoString eventType; + aEvent->GetType(eventType); + if (eventType.EqualsLiteral("dragover")) { + bool canDropLink = false; + handler->CanDropLink(dragEvent, false, &canDropLink); + if (canDropLink) { + aEvent->PreventDefault(); + } + } else if (eventType.EqualsLiteral("drop")) { + nsCOMPtr<nsIWebNavigation> webnav = + static_cast<nsIWebNavigation*>(mWebBrowser); + + // The page might have cancelled the dragover event itself, so check to + // make sure that the link can be dropped first. + bool canDropLink = false; + handler->CanDropLink(dragEvent, false, &canDropLink); + if (!canDropLink) { + return NS_OK; + } + + nsTArray<RefPtr<nsIDroppedLinkItem>> links; + if (webnav && NS_SUCCEEDED(handler->DropLinks(dragEvent, true, links))) { + if (links.Length() >= 1) { + nsCOMPtr<nsIPrincipal> triggeringPrincipal; + handler->GetTriggeringPrincipal(dragEvent, + getter_AddRefs(triggeringPrincipal)); + if (triggeringPrincipal) { + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = + GetWebBrowserChrome(); + if (webBrowserChrome) { + nsCOMPtr<nsIBrowserChild> browserChild = + do_QueryInterface(webBrowserChrome); + if (browserChild) { + nsresult rv = browserChild->RemoteDropLinks(links); + return rv; + } + } + nsAutoString url; + if (NS_SUCCEEDED(links[0]->GetUrl(url))) { + if (!url.IsEmpty()) { +#ifndef ANDROID + MOZ_ASSERT(triggeringPrincipal, + "nsDocShellTreeOwner::HandleEvent: Need a valid " + "triggeringPrincipal"); +#endif + LoadURIOptions loadURIOptions; + loadURIOptions.mTriggeringPrincipal = triggeringPrincipal; + nsCOMPtr<nsIContentSecurityPolicy> csp; + handler->GetCsp(dragEvent, getter_AddRefs(csp)); + loadURIOptions.mCsp = csp; + webnav->FixupAndLoadURIString(url, loadURIOptions); + } + } + } + } + } else { + aEvent->StopPropagation(); + aEvent->PreventDefault(); + } + } + + return NS_OK; +} + +already_AddRefed<nsIWebBrowserChrome> +nsDocShellTreeOwner::GetWebBrowserChrome() { + nsCOMPtr<nsIWebBrowserChrome> chrome; + if (mWebBrowserChromeWeak) { + chrome = do_QueryReferent(mWebBrowserChromeWeak); + } else if (mWebBrowserChrome) { + chrome = mWebBrowserChrome; + } + return chrome.forget(); +} + +already_AddRefed<nsIBaseWindow> nsDocShellTreeOwner::GetOwnerWin() { + nsCOMPtr<nsIBaseWindow> win; + if (mWebBrowserChromeWeak) { + win = do_QueryReferent(mWebBrowserChromeWeak); + } else if (mOwnerWin) { + win = mOwnerWin; + } + return win.forget(); +} + +already_AddRefed<nsIInterfaceRequestor> +nsDocShellTreeOwner::GetOwnerRequestor() { + nsCOMPtr<nsIInterfaceRequestor> req; + if (mWebBrowserChromeWeak) { + req = do_QueryReferent(mWebBrowserChromeWeak); + } else if (mOwnerRequestor) { + req = mOwnerRequestor; + } + return req.forget(); +} + +NS_IMPL_ISUPPORTS(ChromeTooltipListener, nsIDOMEventListener) + +ChromeTooltipListener::ChromeTooltipListener(nsWebBrowser* aInBrowser, + nsIWebBrowserChrome* aInChrome) + : mWebBrowser(aInBrowser), + mWebBrowserChrome(aInChrome), + mTooltipListenerInstalled(false), + mShowingTooltip(false), + mTooltipShownOnce(false) {} + +ChromeTooltipListener::~ChromeTooltipListener() {} + +nsITooltipTextProvider* ChromeTooltipListener::GetTooltipTextProvider() { + if (!mTooltipTextProvider) { + mTooltipTextProvider = do_GetService(NS_TOOLTIPTEXTPROVIDER_CONTRACTID); + } + + if (!mTooltipTextProvider) { + mTooltipTextProvider = + do_GetService(NS_DEFAULTTOOLTIPTEXTPROVIDER_CONTRACTID); + } + + return mTooltipTextProvider; +} + +// Hook up things to the chrome like context menus and tooltips, if the chrome +// has implemented the right interfaces. +NS_IMETHODIMP +ChromeTooltipListener::AddChromeListeners() { + if (!mEventTarget) { + GetDOMEventTarget(mWebBrowser, getter_AddRefs(mEventTarget)); + } + + // Register the appropriate events for tooltips, but only if + // the embedding chrome cares. + nsresult rv = NS_OK; + nsCOMPtr<nsITooltipListener> tooltipListener( + do_QueryInterface(mWebBrowserChrome)); + if (tooltipListener && !mTooltipListenerInstalled) { + rv = AddTooltipListener(); + if (NS_FAILED(rv)) { + return rv; + } + } + + return rv; +} + +// Subscribe to the events that will allow us to track tooltips. We need "mouse" +// for mouseExit, "mouse motion" for mouseMove, and "key" for keyDown. As we +// add the listeners, keep track of how many succeed so we can clean up +// correctly in Release(). +NS_IMETHODIMP +ChromeTooltipListener::AddTooltipListener() { + if (mEventTarget) { + MOZ_TRY(mEventTarget->AddSystemEventListener(u"keydown"_ns, this, false, + false)); + MOZ_TRY(mEventTarget->AddSystemEventListener(u"mousedown"_ns, this, false, + false)); + MOZ_TRY(mEventTarget->AddSystemEventListener(u"mouseout"_ns, this, false, + false)); + MOZ_TRY(mEventTarget->AddSystemEventListener(u"mousemove"_ns, this, false, + false)); + + mTooltipListenerInstalled = true; + } + + return NS_OK; +} + +// Unsubscribe from the various things we've hooked up to the window root. +NS_IMETHODIMP +ChromeTooltipListener::RemoveChromeListeners() { + HideTooltip(); + + if (mTooltipListenerInstalled) { + RemoveTooltipListener(); + } + + mEventTarget = nullptr; + + // it really doesn't matter if these fail... + return NS_OK; +} + +// Unsubscribe from all the various tooltip events that we were listening to. +NS_IMETHODIMP +ChromeTooltipListener::RemoveTooltipListener() { + if (mEventTarget) { + mEventTarget->RemoveSystemEventListener(u"keydown"_ns, this, false); + mEventTarget->RemoveSystemEventListener(u"mousedown"_ns, this, false); + mEventTarget->RemoveSystemEventListener(u"mouseout"_ns, this, false); + mEventTarget->RemoveSystemEventListener(u"mousemove"_ns, this, false); + mTooltipListenerInstalled = false; + } + + return NS_OK; +} + +NS_IMETHODIMP +ChromeTooltipListener::HandleEvent(Event* aEvent) { + nsAutoString eventType; + aEvent->GetType(eventType); + + if (eventType.EqualsLiteral("mousedown")) { + return HideTooltip(); + } else if (eventType.EqualsLiteral("keydown")) { + WidgetKeyboardEvent* keyEvent = aEvent->WidgetEventPtr()->AsKeyboardEvent(); + if (nsXULTooltipListener::KeyEventHidesTooltip(*keyEvent)) { + return HideTooltip(); + } + return NS_OK; + } else if (eventType.EqualsLiteral("mouseout")) { + // Reset flag so that tooltip will display on the next MouseMove + mTooltipShownOnce = false; + return HideTooltip(); + } else if (eventType.EqualsLiteral("mousemove")) { + return MouseMove(aEvent); + } + + NS_ERROR("Unexpected event type"); + return NS_OK; +} + +// If we're a tooltip, fire off a timer to see if a tooltip should be shown. If +// the timer fires, we cache the node in |mPossibleTooltipNode|. +nsresult ChromeTooltipListener::MouseMove(Event* aMouseEvent) { + if (!nsXULTooltipListener::ShowTooltips()) { + return NS_OK; + } + + MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent(); + if (!mouseEvent) { + return NS_OK; + } + + // stash the coordinates of the event so that we can still get back to it from + // within the timer callback. On win32, we'll get a MouseMove event even when + // a popup goes away -- even when the mouse doesn't change position! To get + // around this, we make sure the mouse has really moved before proceeding. + CSSIntPoint newMouseClientPoint = mouseEvent->ClientPoint(); + if (mMouseClientPoint == newMouseClientPoint) { + return NS_OK; + } + + // Filter out minor mouse movements. + if (mShowingTooltip && + (abs(mMouseClientPoint.x - newMouseClientPoint.x) <= + kTooltipMouseMoveTolerance) && + (abs(mMouseClientPoint.y - newMouseClientPoint.y) <= + kTooltipMouseMoveTolerance)) { + return NS_OK; + } + + mMouseClientPoint = newMouseClientPoint; + mMouseScreenPoint = mouseEvent->ScreenPointLayoutDevicePix(); + + if (mTooltipTimer) { + mTooltipTimer->Cancel(); + mTooltipTimer = nullptr; + } + + if (!mShowingTooltip) { + nsIEventTarget* target = nullptr; + if (nsCOMPtr<EventTarget> eventTarget = aMouseEvent->GetComposedTarget()) { + mPossibleTooltipNode = nsINode::FromEventTarget(eventTarget); + nsCOMPtr<nsIGlobalObject> global(eventTarget->GetOwnerGlobal()); + if (global) { + target = global->EventTargetFor(TaskCategory::UI); + } + } + + if (mPossibleTooltipNode) { + nsresult rv = NS_NewTimerWithFuncCallback( + getter_AddRefs(mTooltipTimer), sTooltipCallback, this, + LookAndFeel::GetInt(LookAndFeel::IntID::TooltipDelay, 500), + nsITimer::TYPE_ONE_SHOT, "ChromeTooltipListener::MouseMove", target); + if (NS_FAILED(rv)) { + mPossibleTooltipNode = nullptr; + NS_WARNING("Could not create a timer for tooltip tracking"); + } + } + } else { + mTooltipShownOnce = true; + return HideTooltip(); + } + + return NS_OK; +} + +// Tell the registered chrome that they should show the tooltip. +NS_IMETHODIMP +ChromeTooltipListener::ShowTooltip(int32_t aInXCoords, int32_t aInYCoords, + const nsAString& aInTipText, + const nsAString& aTipDir) { + nsresult rv = NS_OK; + + // do the work to call the client + nsCOMPtr<nsITooltipListener> tooltipListener( + do_QueryInterface(mWebBrowserChrome)); + if (tooltipListener) { + rv = tooltipListener->OnShowTooltip(aInXCoords, aInYCoords, aInTipText, + aTipDir); + if (NS_SUCCEEDED(rv)) { + mShowingTooltip = true; + } + } + + return rv; +} + +// Tell the registered chrome that they should rollup the tooltip +// NOTE: This routine is safe to call even if the popup is already closed. +NS_IMETHODIMP +ChromeTooltipListener::HideTooltip() { + nsresult rv = NS_OK; + + // shut down the relevant timers + if (mTooltipTimer) { + mTooltipTimer->Cancel(); + mTooltipTimer = nullptr; + // release tooltip target + mPossibleTooltipNode = nullptr; + mLastDocshell = nullptr; + } + + // if we're showing the tip, tell the chrome to hide it + if (mShowingTooltip) { + nsCOMPtr<nsITooltipListener> tooltipListener( + do_QueryInterface(mWebBrowserChrome)); + if (tooltipListener) { + rv = tooltipListener->OnHideTooltip(); + if (NS_SUCCEEDED(rv)) { + mShowingTooltip = false; + } + } + } + + return rv; +} + +bool ChromeTooltipListener::WebProgressShowedTooltip( + nsIWebProgress* aWebProgress) { + nsCOMPtr<nsIDocShell> docshell = do_QueryInterface(aWebProgress); + nsCOMPtr<nsIDocShell> lastUsed = do_QueryReferent(mLastDocshell); + while (lastUsed) { + if (lastUsed == docshell) { + return true; + } + // We can't use the docshell hierarchy here, because when the parent + // docshell is navigated, the child docshell is disconnected (ie its + // references to the parent are nulled out) despite it still being + // alive here. So we use the document hierarchy instead: + Document* document = lastUsed->GetDocument(); + if (document) { + document = document->GetInProcessParentDocument(); + } + if (!document) { + break; + } + lastUsed = document->GetDocShell(); + } + return false; +} + +// A timer callback, fired when the mouse has hovered inside of a frame for the +// appropriate amount of time. Getting to this point means that we should show +// the tooltip, but only after we determine there is an appropriate TITLE +// element. +// +// This relies on certain things being cached into the |aChromeTooltipListener| +// object passed to us by the timer: +// -- the x/y coordinates of the mouse (mMouseClientY, mMouseClientX) +// -- the dom node the user hovered over (mPossibleTooltipNode) +void ChromeTooltipListener::sTooltipCallback(nsITimer* aTimer, + void* aChromeTooltipListener) { + auto* self = static_cast<ChromeTooltipListener*>(aChromeTooltipListener); + if (!self || !self->mPossibleTooltipNode) { + return; + } + // release tooltip target once done, no matter what we do here. + auto cleanup = MakeScopeExit([&] { self->mPossibleTooltipNode = nullptr; }); + if (!self->mPossibleTooltipNode->IsInComposedDoc()) { + return; + } + // Check that the document or its ancestors haven't been replaced. + { + Document* doc = self->mPossibleTooltipNode->OwnerDoc(); + while (doc) { + if (!doc->IsCurrentActiveDocument()) { + return; + } + doc = doc->GetInProcessParentDocument(); + } + } + + nsCOMPtr<nsIDocShell> docShell = + do_GetInterface(static_cast<nsIWebBrowser*>(self->mWebBrowser)); + if (!docShell || !docShell->GetBrowsingContext()->IsActive()) { + return; + } + + // if there is text associated with the node, show the tip and fire + // off a timer to auto-hide it. + nsITooltipTextProvider* tooltipProvider = self->GetTooltipTextProvider(); + if (!tooltipProvider) { + return; + } + nsString tooltipText; + nsString directionText; + bool textFound = false; + tooltipProvider->GetNodeText(self->mPossibleTooltipNode, + getter_Copies(tooltipText), + getter_Copies(directionText), &textFound); + + if (textFound && (!self->mTooltipShownOnce || + tooltipText != self->mLastShownTooltipText)) { + // ShowTooltip expects screen-relative position. + self->ShowTooltip(self->mMouseScreenPoint.x, self->mMouseScreenPoint.y, + tooltipText, directionText); + self->mLastShownTooltipText = std::move(tooltipText); + self->mLastDocshell = do_GetWeakReference( + self->mPossibleTooltipNode->OwnerDoc()->GetDocShell()); + } +} |