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-rw-r--r--dom/base/nsQueryContentEventResult.cpp234
1 files changed, 234 insertions, 0 deletions
diff --git a/dom/base/nsQueryContentEventResult.cpp b/dom/base/nsQueryContentEventResult.cpp
new file mode 100644
index 0000000000..9996d1bf6b
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+++ b/dom/base/nsQueryContentEventResult.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 "nsQueryContentEventResult.h"
+
+#include <utility>
+
+#include "mozilla/TextEvents.h"
+#include "nsIWidget.h"
+#include "nsPoint.h"
+
+using namespace mozilla;
+
+/******************************************************************************
+ * Is*PropertyAvailable() methods which check if the property is available
+ * (valid) with the event message.
+ ******************************************************************************/
+
+static bool IsNotFoundPropertyAvailable(EventMessage aEventMessage) {
+ return aEventMessage == eQuerySelectedText ||
+ aEventMessage == eQueryCharacterAtPoint;
+}
+
+static bool IsOffsetPropertyAvailable(EventMessage aEventMessage) {
+ return aEventMessage == eQueryTextContent ||
+ aEventMessage == eQueryTextRect || aEventMessage == eQueryCaretRect ||
+ IsNotFoundPropertyAvailable(aEventMessage);
+}
+
+static bool IsRectRelatedPropertyAvailable(EventMessage aEventMessage) {
+ return aEventMessage == eQueryCaretRect || aEventMessage == eQueryTextRect ||
+ aEventMessage == eQueryEditorRect ||
+ aEventMessage == eQueryCharacterAtPoint;
+}
+
+/******************************************************************************
+ * nsQueryContentEventResult
+ ******************************************************************************/
+
+NS_INTERFACE_MAP_BEGIN(nsQueryContentEventResult)
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIQueryContentEventResult)
+ NS_INTERFACE_MAP_ENTRY(nsIQueryContentEventResult)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_ADDREF(nsQueryContentEventResult)
+NS_IMPL_RELEASE(nsQueryContentEventResult)
+
+nsQueryContentEventResult::nsQueryContentEventResult(
+ mozilla::WidgetQueryContentEvent&& aEvent)
+ : mEventMessage(aEvent.mMessage),
+ mSucceeded(aEvent.Succeeded()),
+ mReversed(false) {
+ if (mSucceeded) {
+ mOffsetAndData = std::move(aEvent.mReply->mOffsetAndData);
+ mTentativeCaretOffset = std::move(aEvent.mReply->mTentativeCaretOffset);
+ mRect = std::move(aEvent.mReply->mRect);
+ mRectArray = std::move(aEvent.mReply->mRectArray);
+ mReversed = aEvent.mReply->mReversed;
+ }
+ // Mark as result that is longer used.
+ aEvent.mReply.reset();
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetOffset(uint32_t* aOffset) {
+ if (NS_WARN_IF(!mSucceeded)) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ if (NS_WARN_IF(!IsOffsetPropertyAvailable(mEventMessage))) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ // With some event message, both offset and notFound properties are available.
+ // In that case, offset value may mean "not found". If so, this method
+ // shouldn't return mOffset as the result because it's a special value for
+ // "not found".
+ if (IsNotFoundPropertyAvailable(mEventMessage)) {
+ bool notFound;
+ nsresult rv = GetNotFound(&notFound);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv; // Just an unexpected case...
+ }
+ // As said above, if mOffset means "not found", offset property shouldn't
+ // return its value without any errors.
+ if (NS_WARN_IF(notFound)) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ }
+
+ *aOffset = mOffsetAndData->StartOffset();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetTentativeCaretOffset(uint32_t* aOffset) {
+ bool notFound;
+ nsresult rv = GetTentativeCaretOffsetNotFound(&notFound);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+ if (NS_WARN_IF(notFound)) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ *aOffset = mTentativeCaretOffset.value();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetReversed(bool* aReversed) {
+ NS_ENSURE_TRUE(mSucceeded, NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(mEventMessage == eQuerySelectedText, NS_ERROR_NOT_AVAILABLE);
+ *aReversed = mReversed;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetLeft(int32_t* aLeft) {
+ NS_ENSURE_TRUE(mSucceeded, NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(IsRectRelatedPropertyAvailable(mEventMessage),
+ NS_ERROR_NOT_AVAILABLE);
+ *aLeft = mRect.x;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetWidth(int32_t* aWidth) {
+ NS_ENSURE_TRUE(mSucceeded, NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(IsRectRelatedPropertyAvailable(mEventMessage),
+ NS_ERROR_NOT_AVAILABLE);
+ *aWidth = mRect.Width();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetTop(int32_t* aTop) {
+ NS_ENSURE_TRUE(mSucceeded, NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(IsRectRelatedPropertyAvailable(mEventMessage),
+ NS_ERROR_NOT_AVAILABLE);
+ *aTop = mRect.y;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetHeight(int32_t* aHeight) {
+ NS_ENSURE_TRUE(mSucceeded, NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(IsRectRelatedPropertyAvailable(mEventMessage),
+ NS_ERROR_NOT_AVAILABLE);
+ *aHeight = mRect.Height();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetText(nsAString& aText) {
+ NS_ENSURE_TRUE(mSucceeded, NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(mEventMessage == eQuerySelectedText ||
+ mEventMessage == eQueryTextContent ||
+ mEventMessage == eQueryTextRect,
+ NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(mOffsetAndData.isSome(), NS_ERROR_NOT_AVAILABLE);
+ aText = mOffsetAndData->DataRef();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetSucceeded(bool* aSucceeded) {
+ NS_ENSURE_TRUE(mEventMessage != eVoidEvent, NS_ERROR_NOT_INITIALIZED);
+ *aSucceeded = mSucceeded;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetNotFound(bool* aNotFound) {
+ if (NS_WARN_IF(!mSucceeded) ||
+ NS_WARN_IF(!IsNotFoundPropertyAvailable(mEventMessage))) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ *aNotFound = mOffsetAndData.isNothing();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetTentativeCaretOffsetNotFound(bool* aNotFound) {
+ if (NS_WARN_IF(!mSucceeded)) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ if (NS_WARN_IF(mEventMessage != eQueryCharacterAtPoint)) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+ *aNotFound = mTentativeCaretOffset.isNothing();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsQueryContentEventResult::GetCharacterRect(int32_t aOffset, int32_t* aLeft,
+ int32_t* aTop, int32_t* aWidth,
+ int32_t* aHeight) {
+ NS_ENSURE_TRUE(mSucceeded, NS_ERROR_NOT_AVAILABLE);
+ NS_ENSURE_TRUE(mEventMessage == eQueryTextRectArray, NS_ERROR_NOT_AVAILABLE);
+
+ if (NS_WARN_IF(mRectArray.Length() <= static_cast<size_t>(aOffset))) {
+ return NS_ERROR_FAILURE;
+ }
+
+ *aLeft = mRectArray[aOffset].x;
+ *aTop = mRectArray[aOffset].y;
+ *aWidth = mRectArray[aOffset].Width();
+ *aHeight = mRectArray[aOffset].Height();
+
+ return NS_OK;
+}
+
+void nsQueryContentEventResult::SetEventResult(nsIWidget* aWidget) {
+ if (!IsRectRelatedPropertyAvailable(mEventMessage) || !aWidget ||
+ !mSucceeded) {
+ return;
+ }
+
+ nsIWidget* topWidget = aWidget->GetTopLevelWidget();
+ if (!topWidget || topWidget == aWidget) {
+ return;
+ }
+
+ // Convert the top widget related coordinates to the given widget's.
+ LayoutDeviceIntPoint offset =
+ aWidget->WidgetToScreenOffset() - topWidget->WidgetToScreenOffset();
+ mRect.MoveBy(-offset);
+ for (size_t i = 0; i < mRectArray.Length(); i++) {
+ mRectArray[i].MoveBy(-offset);
+ }
+}