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Diffstat (limited to '')
| -rw-r--r-- | dom/base/nsQueryContentEventResult.cpp | 234 |
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 --- /dev/null +++ b/dom/base/nsQueryContentEventResult.cpp @@ -0,0 +1,234 @@ +/* -*- 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(¬Found); + 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(¬Found); + 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); + } +} |