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ContentCache.cpp
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* 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 "mozilla/ContentCache.h"
#include "mozilla/IMEStateManager.h"
#include "mozilla/Logging.h"
#include "mozilla/TextComposition.h"
#include "mozilla/TextEvents.h"
#include "nsIWidget.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Move.h"
namespace mozilla {
using namespace widget;
static const char*
GetBoolName(bool aBool)
{
return aBool ? "true" : "false";
}
static const char*
GetNotificationName(const IMENotification* aNotification)
{
if (!aNotification) {
return "Not notification";
}
return ToChar(aNotification->mMessage);
}
class GetRectText : public nsAutoCString
{
public:
explicit GetRectText(const LayoutDeviceIntRect& aRect)
{
Assign("{ x=");
AppendInt(aRect.x);
Append(", y=");
AppendInt(aRect.y);
Append(", width=");
AppendInt(aRect.width);
Append(", height=");
AppendInt(aRect.height);
Append(" }");
}
virtual ~GetRectText() {}
};
class GetWritingModeName : public nsAutoCString
{
public:
explicit GetWritingModeName(const WritingMode& aWritingMode)
{
if (!aWritingMode.IsVertical()) {
Assign("Horizontal");
return;
}
if (aWritingMode.IsVerticalLR()) {
Assign("Vertical (LTR)");
return;
}
Assign("Vertical (RTL)");
}
virtual ~GetWritingModeName() {}
};
class GetEscapedUTF8String final : public NS_ConvertUTF16toUTF8
{
public:
explicit GetEscapedUTF8String(const nsAString& aString)
: NS_ConvertUTF16toUTF8(aString)
{
Escape();
}
explicit GetEscapedUTF8String(const char16ptr_t aString)
: NS_ConvertUTF16toUTF8(aString)
{
Escape();
}
GetEscapedUTF8String(const char16ptr_t aString, uint32_t aLength)
: NS_ConvertUTF16toUTF8(aString, aLength)
{
Escape();
}
private:
void Escape()
{
ReplaceSubstring("\r", "\\r");
ReplaceSubstring("\n", "\\n");
ReplaceSubstring("\t", "\\t");
}
};
/*****************************************************************************
* mozilla::ContentCache
*****************************************************************************/
LazyLogModule sContentCacheLog("ContentCacheWidgets");
ContentCache::ContentCache()
: mCompositionStart(UINT32_MAX)
{
}
/*****************************************************************************
* mozilla::ContentCacheInChild
*****************************************************************************/
ContentCacheInChild::ContentCacheInChild()
: ContentCache()
{
}
void
ContentCacheInChild::Clear()
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p Clear()", this));
mCompositionStart = UINT32_MAX;
mText.Truncate();
mSelection.Clear();
mFirstCharRect.SetEmpty();
mCaret.Clear();
mTextRectArray.Clear();
mEditorRect.SetEmpty();
}
bool
ContentCacheInChild::CacheAll(nsIWidget* aWidget,
const IMENotification* aNotification)
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheAll(aWidget=0x%p, aNotification=%s)",
this, aWidget, GetNotificationName(aNotification)));
if (NS_WARN_IF(!CacheText(aWidget, aNotification)) ||
NS_WARN_IF(!CacheEditorRect(aWidget, aNotification))) {
return false;
}
return true;
}
bool
ContentCacheInChild::CacheSelection(nsIWidget* aWidget,
const IMENotification* aNotification)
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheSelection(aWidget=0x%p, aNotification=%s)",
this, aWidget, GetNotificationName(aNotification)));
mCaret.Clear();
mSelection.Clear();
nsEventStatus status = nsEventStatus_eIgnore;
WidgetQueryContentEvent selection(true, eQuerySelectedText, aWidget);
aWidget->DispatchEvent(&selection, status);
if (NS_WARN_IF(!selection.mSucceeded)) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheSelection(), FAILED, "
"couldn't retrieve the selected text", this));
return false;
}
if (selection.mReply.mReversed) {
mSelection.mAnchor =
selection.mReply.mOffset + selection.mReply.mString.Length();
mSelection.mFocus = selection.mReply.mOffset;
} else {
mSelection.mAnchor = selection.mReply.mOffset;
mSelection.mFocus =
selection.mReply.mOffset + selection.mReply.mString.Length();
}
mSelection.mWritingMode = selection.GetWritingMode();
return CacheCaret(aWidget, aNotification) &&
CacheTextRects(aWidget, aNotification);
}
bool
ContentCacheInChild::CacheCaret(nsIWidget* aWidget,
const IMENotification* aNotification)
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheCaret(aWidget=0x%p, aNotification=%s)",
this, aWidget, GetNotificationName(aNotification)));
mCaret.Clear();
if (NS_WARN_IF(!mSelection.IsValid())) {
return false;
}
// XXX Should be mSelection.mFocus?
mCaret.mOffset = mSelection.StartOffset();
nsEventStatus status = nsEventStatus_eIgnore;
WidgetQueryContentEvent caretRect(true, eQueryCaretRect, aWidget);
caretRect.InitForQueryCaretRect(mCaret.mOffset);
aWidget->DispatchEvent(&caretRect, status);
if (NS_WARN_IF(!caretRect.mSucceeded)) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheCaret(), FAILED, "
"couldn't retrieve the caret rect at offset=%u",
this, mCaret.mOffset));
mCaret.Clear();
return false;
}
mCaret.mRect = caretRect.mReply.mRect;
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheCaret(), Succeeded, "
"mSelection={ mAnchor=%u, mFocus=%u, mWritingMode=%s }, "
"mCaret={ mOffset=%u, mRect=%s }",
this, mSelection.mAnchor, mSelection.mFocus,
GetWritingModeName(mSelection.mWritingMode).get(), mCaret.mOffset,
GetRectText(mCaret.mRect).get()));
return true;
}
bool
ContentCacheInChild::CacheEditorRect(nsIWidget* aWidget,
const IMENotification* aNotification)
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheEditorRect(aWidget=0x%p, aNotification=%s)",
this, aWidget, GetNotificationName(aNotification)));
nsEventStatus status = nsEventStatus_eIgnore;
WidgetQueryContentEvent editorRectEvent(true, eQueryEditorRect, aWidget);
aWidget->DispatchEvent(&editorRectEvent, status);
if (NS_WARN_IF(!editorRectEvent.mSucceeded)) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheEditorRect(), FAILED, "
"couldn't retrieve the editor rect", this));
return false;
}
mEditorRect = editorRectEvent.mReply.mRect;
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheEditorRect(), Succeeded, "
"mEditorRect=%s", this, GetRectText(mEditorRect).get()));
return true;
}
bool
ContentCacheInChild::CacheText(nsIWidget* aWidget,
const IMENotification* aNotification)
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheText(aWidget=0x%p, aNotification=%s)",
this, aWidget, GetNotificationName(aNotification)));
nsEventStatus status = nsEventStatus_eIgnore;
WidgetQueryContentEvent queryText(true, eQueryTextContent, aWidget);
queryText.InitForQueryTextContent(0, UINT32_MAX);
aWidget->DispatchEvent(&queryText, status);
if (NS_WARN_IF(!queryText.mSucceeded)) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheText(), FAILED, couldn't retrieve whole text", this));
mText.Truncate();
return false;
}
mText = queryText.mReply.mString;
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheText(), Succeeded, mText.Length()=%u", this, mText.Length()));
return CacheSelection(aWidget, aNotification);
}
bool
ContentCacheInChild::QueryCharRect(nsIWidget* aWidget,
uint32_t aOffset,
LayoutDeviceIntRect& aCharRect) const
{
aCharRect.SetEmpty();
nsEventStatus status = nsEventStatus_eIgnore;
WidgetQueryContentEvent textRect(true, eQueryTextRect, aWidget);
textRect.InitForQueryTextRect(aOffset, 1);
aWidget->DispatchEvent(&textRect, status);
if (NS_WARN_IF(!textRect.mSucceeded)) {
return false;
}
aCharRect = textRect.mReply.mRect;
// Guarantee the rect is not empty.
if (NS_WARN_IF(!aCharRect.height)) {
aCharRect.height = 1;
}
if (NS_WARN_IF(!aCharRect.width)) {
aCharRect.width = 1;
}
return true;
}
bool
ContentCacheInChild::QueryCharRectArray(nsIWidget* aWidget,
uint32_t aOffset,
uint32_t aLength,
RectArray& aCharRectArray) const
{
nsEventStatus status = nsEventStatus_eIgnore;
WidgetQueryContentEvent textRects(true, eQueryTextRectArray, aWidget);
textRects.InitForQueryTextRectArray(aOffset, aLength);
aWidget->DispatchEvent(&textRects, status);
if (NS_WARN_IF(!textRects.mSucceeded)) {
aCharRectArray.Clear();
return false;
}
aCharRectArray = Move(textRects.mReply.mRectArray);
return true;
}
bool
ContentCacheInChild::CacheTextRects(nsIWidget* aWidget,
const IMENotification* aNotification)
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheTextRects(aWidget=0x%p, aNotification=%s), "
"mCaret={ mOffset=%u, IsValid()=%s }",
this, aWidget, GetNotificationName(aNotification), mCaret.mOffset,
GetBoolName(mCaret.IsValid())));
mCompositionStart = UINT32_MAX;
mTextRectArray.Clear();
mSelection.ClearAnchorCharRects();
mSelection.ClearFocusCharRects();
mSelection.mRect.SetEmpty();
mFirstCharRect.SetEmpty();
if (NS_WARN_IF(!mSelection.IsValid())) {
return false;
}
// Retrieve text rects in composition string if there is.
RefPtr<TextComposition> textComposition =
IMEStateManager::GetTextCompositionFor(aWidget);
if (textComposition) {
// mCompositionStart may be updated by some composition event handlers.
// So, let's update it with the latest information.
mCompositionStart = textComposition->NativeOffsetOfStartComposition();
// Note that TextComposition::String() may not be modified here because
// it's modified after all edit action listeners are performed but this
// is called while some of them are performed.
uint32_t length = textComposition->LastData().Length();
mTextRectArray.mStart = mCompositionStart;
if (NS_WARN_IF(!QueryCharRectArray(aWidget, mTextRectArray.mStart, length,
mTextRectArray.mRects))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheTextRects(), FAILED, "
"couldn't retrieve text rect array of the composition string", this));
}
}
if (mTextRectArray.InRange(mSelection.mAnchor) &&
(!mSelection.mAnchor || mTextRectArray.InRange(mSelection.mAnchor - 1))) {
mSelection.mAnchorCharRects[eNextCharRect] =
mTextRectArray.GetRect(mSelection.mAnchor);
if (mSelection.mAnchor) {
mSelection.mAnchorCharRects[ePrevCharRect] =
mTextRectArray.GetRect(mSelection.mAnchor - 1);
}
} else {
RectArray rects;
uint32_t startOffset = mSelection.mAnchor ? mSelection.mAnchor - 1 : 0;
uint32_t length = mSelection.mAnchor ? 2 : 1;
if (NS_WARN_IF(!QueryCharRectArray(aWidget, startOffset, length, rects))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheTextRects(), FAILED, "
"couldn't retrieve text rect array around the selection anchor (%u)",
this, mSelection.mAnchor));
MOZ_ASSERT(mSelection.mAnchorCharRects[ePrevCharRect].IsEmpty());
MOZ_ASSERT(mSelection.mAnchorCharRects[eNextCharRect].IsEmpty());
} else {
if (rects.Length() > 1) {
mSelection.mAnchorCharRects[ePrevCharRect] = rects[0];
mSelection.mAnchorCharRects[eNextCharRect] = rects[1];
} else if (rects.Length()) {
mSelection.mAnchorCharRects[eNextCharRect] = rects[0];
MOZ_ASSERT(mSelection.mAnchorCharRects[ePrevCharRect].IsEmpty());
}
}
}
if (mSelection.Collapsed()) {
mSelection.mFocusCharRects[0] = mSelection.mAnchorCharRects[0];
mSelection.mFocusCharRects[1] = mSelection.mAnchorCharRects[1];
} else if (mTextRectArray.InRange(mSelection.mFocus) &&
(!mSelection.mFocus ||
mTextRectArray.InRange(mSelection.mFocus - 1))) {
mSelection.mFocusCharRects[eNextCharRect] =
mTextRectArray.GetRect(mSelection.mFocus);
if (mSelection.mFocus) {
mSelection.mFocusCharRects[ePrevCharRect] =
mTextRectArray.GetRect(mSelection.mFocus - 1);
}
} else {
RectArray rects;
uint32_t startOffset = mSelection.mFocus ? mSelection.mFocus - 1 : 0;
uint32_t length = mSelection.mFocus ? 2 : 1;
if (NS_WARN_IF(!QueryCharRectArray(aWidget, startOffset, length, rects))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheTextRects(), FAILED, "
"couldn't retrieve text rect array around the selection focus (%u)",
this, mSelection.mFocus));
MOZ_ASSERT(mSelection.mFocusCharRects[ePrevCharRect].IsEmpty());
MOZ_ASSERT(mSelection.mFocusCharRects[eNextCharRect].IsEmpty());
} else {
if (rects.Length() > 1) {
mSelection.mFocusCharRects[ePrevCharRect] = rects[0];
mSelection.mFocusCharRects[eNextCharRect] = rects[1];
} else if (rects.Length()) {
mSelection.mFocusCharRects[eNextCharRect] = rects[0];
MOZ_ASSERT(mSelection.mFocusCharRects[ePrevCharRect].IsEmpty());
}
}
}
if (!mSelection.Collapsed()) {
nsEventStatus status = nsEventStatus_eIgnore;
WidgetQueryContentEvent textRect(true, eQueryTextRect, aWidget);
textRect.InitForQueryTextRect(mSelection.StartOffset(),
mSelection.Length());
aWidget->DispatchEvent(&textRect, status);
if (NS_WARN_IF(!textRect.mSucceeded)) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheTextRects(), FAILED, "
"couldn't retrieve text rect of whole selected text", this));
} else {
mSelection.mRect = textRect.mReply.mRect;
}
}
if (!mSelection.mFocus) {
mFirstCharRect = mSelection.mFocusCharRects[eNextCharRect];
} else if (mSelection.mFocus == 1) {
mFirstCharRect = mSelection.mFocusCharRects[ePrevCharRect];
} else if (!mSelection.mAnchor) {
mFirstCharRect = mSelection.mAnchorCharRects[eNextCharRect];
} else if (mSelection.mAnchor == 1) {
mFirstCharRect = mSelection.mFocusCharRects[ePrevCharRect];
} else if (mTextRectArray.InRange(0)) {
mFirstCharRect = mTextRectArray.GetRect(0);
} else {
LayoutDeviceIntRect charRect;
if (NS_WARN_IF(!QueryCharRect(aWidget, 0, charRect))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p CacheTextRects(), FAILED, "
"couldn't retrieve first char rect", this));
} else {
mFirstCharRect = charRect;
}
}
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p CacheTextRects(), Succeeded, "
"mText.Length()=%u, mTextRectArray={ mStart=%u, mRects.Length()=%u }, "
"mSelection={ mAnchor=%u, mAnchorCharRects[eNextCharRect]=%s, "
"mAnchorCharRects[ePrevCharRect]=%s, mFocus=%u, "
"mFocusCharRects[eNextCharRect]=%s, mFocusCharRects[ePrevCharRect]=%s, "
"mRect=%s }, mFirstCharRect=%s",
this, mText.Length(), mTextRectArray.mStart,
mTextRectArray.mRects.Length(), mSelection.mAnchor,
GetRectText(mSelection.mAnchorCharRects[eNextCharRect]).get(),
GetRectText(mSelection.mAnchorCharRects[ePrevCharRect]).get(),
mSelection.mFocus,
GetRectText(mSelection.mFocusCharRects[eNextCharRect]).get(),
GetRectText(mSelection.mFocusCharRects[ePrevCharRect]).get(),
GetRectText(mSelection.mRect).get(), GetRectText(mFirstCharRect).get()));
return true;
}
void
ContentCacheInChild::SetSelection(nsIWidget* aWidget,
uint32_t aStartOffset,
uint32_t aLength,
bool aReversed,
const WritingMode& aWritingMode)
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p SetSelection(aStartOffset=%u, "
"aLength=%u, aReversed=%s, aWritingMode=%s), mText.Length()=%u",
this, aStartOffset, aLength, GetBoolName(aReversed),
GetWritingModeName(aWritingMode).get(), mText.Length()));
if (!aReversed) {
mSelection.mAnchor = aStartOffset;
mSelection.mFocus = aStartOffset + aLength;
} else {
mSelection.mAnchor = aStartOffset + aLength;
mSelection.mFocus = aStartOffset;
}
mSelection.mWritingMode = aWritingMode;
if (NS_WARN_IF(!CacheCaret(aWidget))) {
return;
}
NS_WARN_IF(!CacheTextRects(aWidget));
}
/*****************************************************************************
* mozilla::ContentCacheInParent
*****************************************************************************/
ContentCacheInParent::ContentCacheInParent()
: ContentCache()
, mCommitStringByRequest(nullptr)
, mPendingEventsNeedingAck(0)
, mIsComposing(false)
{
}
void
ContentCacheInParent::AssignContent(const ContentCache& aOther,
nsIWidget* aWidget,
const IMENotification* aNotification)
{
mCompositionStart = aOther.mCompositionStart;
mText = aOther.mText;
mSelection = aOther.mSelection;
mFirstCharRect = aOther.mFirstCharRect;
mCaret = aOther.mCaret;
mTextRectArray = aOther.mTextRectArray;
mEditorRect = aOther.mEditorRect;
if (mIsComposing) {
NS_WARN_IF(mCompositionStart == UINT32_MAX);
IMEStateManager::MaybeStartOffsetUpdatedInChild(aWidget, mCompositionStart);
} else {
NS_WARN_IF(mCompositionStart != UINT32_MAX);
}
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p AssignContent(aNotification=%s), "
"Succeeded, mText.Length()=%u, mSelection={ mAnchor=%u, mFocus=%u, "
"mWritingMode=%s, mAnchorCharRects[eNextCharRect]=%s, "
"mAnchorCharRects[ePrevCharRect]=%s, mFocusCharRects[eNextCharRect]=%s, "
"mFocusCharRects[ePrevCharRect]=%s, mRect=%s }, "
"mFirstCharRect=%s, mCaret={ mOffset=%u, mRect=%s }, mTextRectArray={ "
"mStart=%u, mRects.Length()=%u }, mIsComposing=%s, mCompositionStart=%u, "
"mEditorRect=%s",
this, GetNotificationName(aNotification),
mText.Length(), mSelection.mAnchor, mSelection.mFocus,
GetWritingModeName(mSelection.mWritingMode).get(),
GetRectText(mSelection.mAnchorCharRects[eNextCharRect]).get(),
GetRectText(mSelection.mAnchorCharRects[ePrevCharRect]).get(),
GetRectText(mSelection.mFocusCharRects[eNextCharRect]).get(),
GetRectText(mSelection.mFocusCharRects[ePrevCharRect]).get(),
GetRectText(mSelection.mRect).get(), GetRectText(mFirstCharRect).get(),
mCaret.mOffset, GetRectText(mCaret.mRect).get(), mTextRectArray.mStart,
mTextRectArray.mRects.Length(), GetBoolName(mIsComposing),
mCompositionStart, GetRectText(mEditorRect).get()));
}
bool
ContentCacheInParent::HandleQueryContentEvent(WidgetQueryContentEvent& aEvent,
nsIWidget* aWidget) const
{
MOZ_ASSERT(aWidget);
aEvent.mSucceeded = false;
aEvent.mReply.mFocusedWidget = aWidget;
// ContentCache doesn't store offset of its start with XP linebreaks.
// So, we don't support to query contents relative to composition start
// offset with XP linebreaks.
if (NS_WARN_IF(!aEvent.mUseNativeLineBreak)) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), FAILED due to query with XP linebreaks",
this));
return false;
}
if (NS_WARN_IF(!aEvent.mInput.IsValidOffset())) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), FAILED due to invalid offset",
this));
return false;
}
if (NS_WARN_IF(!aEvent.mInput.IsValidEventMessage(aEvent.mMessage))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), FAILED due to invalid event message",
this));
return false;
}
bool isRelativeToInsertionPoint = aEvent.mInput.mRelativeToInsertionPoint;
if (isRelativeToInsertionPoint) {
if (aWidget->PluginHasFocus()) {
if (NS_WARN_IF(!aEvent.mInput.MakeOffsetAbsolute(0))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), FAILED due to "
"aEvent.mInput.MakeOffsetAbsolute(0) failure, aEvent={ mMessage=%s, "
"mInput={ mOffset=%d, mLength=%d } }",
this, ToChar(aEvent.mMessage), aEvent.mInput.mOffset,
aEvent.mInput.mLength));
return false;
}
} else if (mIsComposing) {
if (NS_WARN_IF(!aEvent.mInput.MakeOffsetAbsolute(mCompositionStart))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), FAILED due to "
"aEvent.mInput.MakeOffsetAbsolute(mCompositionStart) failure, "
"mCompositionStart=%d, aEvent={ mMessage=%s, "
"mInput={ mOffset=%d, mLength=%d } }",
this, mCompositionStart, ToChar(aEvent.mMessage),
aEvent.mInput.mOffset, aEvent.mInput.mLength));
return false;
}
} else if (NS_WARN_IF(!mSelection.IsValid())) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), FAILED due to mSelection is invalid",
this));
return false;
} else if (NS_WARN_IF(!aEvent.mInput.MakeOffsetAbsolute(
mSelection.StartOffset()))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), FAILED due to "
"aEvent.mInput.MakeOffsetAbsolute(mSelection.StartOffset()) "
"failure, mSelection={ StartOffset()=%d, Length()=%d }, "
"aEvent={ mMessage=%s, mInput={ mOffset=%d, mLength=%d } }",
this, mSelection.StartOffset(), mSelection.Length(),
ToChar(aEvent.mMessage), aEvent.mInput.mOffset,
aEvent.mInput.mLength));
return false;
}
}
switch (aEvent.mMessage) {
case eQuerySelectedText:
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent("
"aEvent={ mMessage=eQuerySelectedText }, aWidget=0x%p)",
this, aWidget));
if (aWidget->PluginHasFocus()) {
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent(), "
"return emtpy selection becasue plugin has focus",
this));
aEvent.mSucceeded = true;
aEvent.mReply.mOffset = 0;
aEvent.mReply.mReversed = false;
aEvent.mReply.mHasSelection = false;
return true;
}
if (NS_WARN_IF(!IsSelectionValid())) {
// If content cache hasn't been initialized properly, make the query
// failed.
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED because mSelection is not valid", this));
return true;
}
aEvent.mReply.mOffset = mSelection.StartOffset();
if (mSelection.Collapsed()) {
aEvent.mReply.mString.Truncate(0);
} else {
if (NS_WARN_IF(mSelection.EndOffset() > mText.Length())) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED because mSelection.EndOffset()=%u is larger than "
"mText.Length()=%u",
this, mSelection.EndOffset(), mText.Length()));
return false;
}
aEvent.mReply.mString =
Substring(mText, aEvent.mReply.mOffset, mSelection.Length());
}
aEvent.mReply.mReversed = mSelection.Reversed();
aEvent.mReply.mHasSelection = true;
aEvent.mReply.mWritingMode = mSelection.mWritingMode;
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent(), "
"Succeeded, aEvent={ mReply={ mOffset=%u, mString=\"%s\", "
"mReversed=%s, mHasSelection=%s, mWritingMode=%s } }",
this, aEvent.mReply.mOffset,
GetEscapedUTF8String(aEvent.mReply.mString).get(),
GetBoolName(aEvent.mReply.mReversed),
GetBoolName(aEvent.mReply.mHasSelection),
GetWritingModeName(aEvent.mReply.mWritingMode).get()));
break;
case eQueryTextContent: {
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent("
"aEvent={ mMessage=eQueryTextContent, mInput={ mOffset=%u, "
"mLength=%u } }, aWidget=0x%p), mText.Length()=%u",
this, aEvent.mInput.mOffset,
aEvent.mInput.mLength, aWidget, mText.Length()));
uint32_t inputOffset = aEvent.mInput.mOffset;
uint32_t inputEndOffset =
std::min(aEvent.mInput.EndOffset(), mText.Length());
if (NS_WARN_IF(inputEndOffset < inputOffset)) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED because inputOffset=%u is larger than inputEndOffset=%u",
this, inputOffset, inputEndOffset));
return false;
}
aEvent.mReply.mOffset = inputOffset;
aEvent.mReply.mString =
Substring(mText, inputOffset, inputEndOffset - inputOffset);
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent(), "
"Succeeded, aEvent={ mReply={ mOffset=%u, mString.Length()=%u } }",
this, aEvent.mReply.mOffset, aEvent.mReply.mString.Length()));
break;
}
case eQueryTextRect:
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent("
"aEvent={ mMessage=eQueryTextRect, mInput={ mOffset=%u, "
"mLength=%u } }, aWidget=0x%p), mText.Length()=%u",
this, aEvent.mInput.mOffset, aEvent.mInput.mLength, aWidget,
mText.Length()));
if (NS_WARN_IF(!IsSelectionValid())) {
// If content cache hasn't been initialized properly, make the query
// failed.
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED because mSelection is not valid", this));
return true;
}
// Note that if the query is relative to insertion point, the query was
// probably requested by native IME. In such case, we should return
// non-empty rect since returning failure causes IME showing its window
// at odd position.
if (aEvent.mInput.mLength) {
if (NS_WARN_IF(!GetUnionTextRects(aEvent.mInput.mOffset,
aEvent.mInput.mLength,
isRelativeToInsertionPoint,
aEvent.mReply.mRect))) {
// XXX We don't have cache for this request.
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED to get union rect", this));
return false;
}
} else {
// If the length is 0, we should return caret rect instead.
if (NS_WARN_IF(!GetCaretRect(aEvent.mInput.mOffset,
isRelativeToInsertionPoint,
aEvent.mReply.mRect))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED to get caret rect", this));
return false;
}
}
if (aEvent.mInput.mOffset < mText.Length()) {
aEvent.mReply.mString =
Substring(mText, aEvent.mInput.mOffset,
mText.Length() >= aEvent.mInput.EndOffset() ?
aEvent.mInput.mLength : UINT32_MAX);
} else {
aEvent.mReply.mString.Truncate(0);
}
aEvent.mReply.mOffset = aEvent.mInput.mOffset;
// XXX This may be wrong if storing range isn't in the selection range.
aEvent.mReply.mWritingMode = mSelection.mWritingMode;
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent(), "
"Succeeded, aEvent={ mReply={ mOffset=%u, mString=\"%s\", "
"mWritingMode=%s, mRect=%s } }",
this, aEvent.mReply.mOffset,
GetEscapedUTF8String(aEvent.mReply.mString).get(),
GetWritingModeName(aEvent.mReply.mWritingMode).get(),
GetRectText(aEvent.mReply.mRect).get()));
break;
case eQueryCaretRect:
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent("
"aEvent={ mMessage=eQueryCaretRect, mInput={ mOffset=%u } }, "
"aWidget=0x%p), mText.Length()=%u",
this, aEvent.mInput.mOffset, aWidget, mText.Length()));
if (NS_WARN_IF(!IsSelectionValid())) {
// If content cache hasn't been initialized properly, make the query
// failed.
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED because mSelection is not valid", this));
return true;
}
// Note that if the query is relative to insertion point, the query was
// probably requested by native IME. In such case, we should return
// non-empty rect since returning failure causes IME showing its window
// at odd position.
if (NS_WARN_IF(!GetCaretRect(aEvent.mInput.mOffset,
isRelativeToInsertionPoint,
aEvent.mReply.mRect))) {
MOZ_LOG(sContentCacheLog, LogLevel::Error,
("0x%p HandleQueryContentEvent(), "
"FAILED to get caret rect", this));
return false;
}
aEvent.mReply.mOffset = aEvent.mInput.mOffset;
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent(), "
"Succeeded, aEvent={ mReply={ mOffset=%u, mRect=%s } }",
this, aEvent.mReply.mOffset, GetRectText(aEvent.mReply.mRect).get()));
break;
case eQueryEditorRect:
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent("
"aEvent={ mMessage=eQueryEditorRect }, aWidget=0x%p)",
this, aWidget));
aEvent.mReply.mRect = mEditorRect;
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p HandleQueryContentEvent(), "
"Succeeded, aEvent={ mReply={ mRect=%s } }",
this, GetRectText(aEvent.mReply.mRect).get()));
break;
default:
break;
}
aEvent.mSucceeded = true;
return true;
}
bool
ContentCacheInParent::GetTextRect(uint32_t aOffset,
bool aRoundToExistingOffset,
LayoutDeviceIntRect& aTextRect) const
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p GetTextRect(aOffset=%u, "
"aRoundToExistingOffset=%s), "
"mTextRectArray={ mStart=%u, mRects.Length()=%u }, "
"mSelection={ mAnchor=%u, mFocus=%u }",
this, aOffset, GetBoolName(aRoundToExistingOffset),
mTextRectArray.mStart, mTextRectArray.mRects.Length(),
mSelection.mAnchor, mSelection.mFocus));
if (!aOffset) {
NS_WARN_IF(mFirstCharRect.IsEmpty());
aTextRect = mFirstCharRect;
return !aTextRect.IsEmpty();
}
if (aOffset == mSelection.mAnchor) {
NS_WARN_IF(mSelection.mAnchorCharRects[eNextCharRect].IsEmpty());
aTextRect = mSelection.mAnchorCharRects[eNextCharRect];
return !aTextRect.IsEmpty();
}
if (mSelection.mAnchor && aOffset == mSelection.mAnchor - 1) {
NS_WARN_IF(mSelection.mAnchorCharRects[ePrevCharRect].IsEmpty());
aTextRect = mSelection.mAnchorCharRects[ePrevCharRect];
return !aTextRect.IsEmpty();
}
if (aOffset == mSelection.mFocus) {
NS_WARN_IF(mSelection.mFocusCharRects[eNextCharRect].IsEmpty());
aTextRect = mSelection.mFocusCharRects[eNextCharRect];
return !aTextRect.IsEmpty();
}
if (mSelection.mFocus && aOffset == mSelection.mFocus - 1) {
NS_WARN_IF(mSelection.mFocusCharRects[ePrevCharRect].IsEmpty());
aTextRect = mSelection.mFocusCharRects[ePrevCharRect];
return !aTextRect.IsEmpty();
}
uint32_t offset = aOffset;
if (!mTextRectArray.InRange(aOffset)) {
if (!aRoundToExistingOffset) {
aTextRect.SetEmpty();
return false;
}
if (!mTextRectArray.IsValid()) {
// If there are no rects in mTextRectArray, we should refer the start of
// the selection because IME must query a char rect around it if there is
// no composition.
aTextRect = mSelection.StartCharRect();
return !aTextRect.IsEmpty();
}
if (offset < mTextRectArray.StartOffset()) {
offset = mTextRectArray.StartOffset();
} else {
offset = mTextRectArray.EndOffset() - 1;
}
}
aTextRect = mTextRectArray.GetRect(offset);
return !aTextRect.IsEmpty();
}
bool
ContentCacheInParent::GetUnionTextRects(
uint32_t aOffset,
uint32_t aLength,
bool aRoundToExistingOffset,
LayoutDeviceIntRect& aUnionTextRect) const
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p GetUnionTextRects(aOffset=%u, "
"aLength=%u, aRoundToExistingOffset=%s), mTextRectArray={ "
"mStart=%u, mRects.Length()=%u }, "
"mSelection={ mAnchor=%u, mFocus=%u }",
this, aOffset, aLength, GetBoolName(aRoundToExistingOffset),
mTextRectArray.mStart, mTextRectArray.mRects.Length(),
mSelection.mAnchor, mSelection.mFocus));
CheckedInt<uint32_t> endOffset =
CheckedInt<uint32_t>(aOffset) + aLength;
if (!endOffset.isValid()) {
return false;
}
if (!mSelection.Collapsed() &&
aOffset == mSelection.StartOffset() && aLength == mSelection.Length()) {
NS_WARN_IF(mSelection.mRect.IsEmpty());
aUnionTextRect = mSelection.mRect;
return !aUnionTextRect.IsEmpty();
}
if (aLength == 1) {
if (!aOffset) {
NS_WARN_IF(mFirstCharRect.IsEmpty());
aUnionTextRect = mFirstCharRect;
return !aUnionTextRect.IsEmpty();
}
if (aOffset == mSelection.mAnchor) {
NS_WARN_IF(mSelection.mAnchorCharRects[eNextCharRect].IsEmpty());
aUnionTextRect = mSelection.mAnchorCharRects[eNextCharRect];
return !aUnionTextRect.IsEmpty();
}
if (mSelection.mAnchor && aOffset == mSelection.mAnchor - 1) {
NS_WARN_IF(mSelection.mAnchorCharRects[ePrevCharRect].IsEmpty());
aUnionTextRect = mSelection.mAnchorCharRects[ePrevCharRect];
return !aUnionTextRect.IsEmpty();
}
if (aOffset == mSelection.mFocus) {
NS_WARN_IF(mSelection.mFocusCharRects[eNextCharRect].IsEmpty());
aUnionTextRect = mSelection.mFocusCharRects[eNextCharRect];
return !aUnionTextRect.IsEmpty();
}
if (mSelection.mFocus && aOffset == mSelection.mFocus - 1) {
NS_WARN_IF(mSelection.mFocusCharRects[ePrevCharRect].IsEmpty());
aUnionTextRect = mSelection.mFocusCharRects[ePrevCharRect];
return !aUnionTextRect.IsEmpty();
}
}
// Even if some text rects are not cached of the queried range,
// we should return union rect when the first character's rect is cached
// since the first character rect is important and the others are not so
// in most cases.
if (!aOffset && aOffset != mSelection.mAnchor &&
aOffset != mSelection.mFocus && !mTextRectArray.InRange(aOffset)) {
// The first character rect isn't cached.
return false;
}
if ((aRoundToExistingOffset && mTextRectArray.HasRects()) ||
mTextRectArray.IsOverlappingWith(aOffset, aLength)) {
aUnionTextRect =
mTextRectArray.GetUnionRectAsFarAsPossible(aOffset, aLength,
aRoundToExistingOffset);
} else {
aUnionTextRect.SetEmpty();
}
if (!aOffset) {
aUnionTextRect = aUnionTextRect.Union(mFirstCharRect);
}
if (aOffset <= mSelection.mAnchor && mSelection.mAnchor < endOffset.value()) {
aUnionTextRect =
aUnionTextRect.Union(mSelection.mAnchorCharRects[eNextCharRect]);
}
if (mSelection.mAnchor && aOffset <= mSelection.mAnchor - 1 &&
mSelection.mAnchor - 1 < endOffset.value()) {
aUnionTextRect =
aUnionTextRect.Union(mSelection.mAnchorCharRects[ePrevCharRect]);
}
if (aOffset <= mSelection.mFocus && mSelection.mFocus < endOffset.value()) {
aUnionTextRect =
aUnionTextRect.Union(mSelection.mFocusCharRects[eNextCharRect]);
}
if (mSelection.mFocus && aOffset <= mSelection.mFocus - 1 &&
mSelection.mFocus - 1 < endOffset.value()) {
aUnionTextRect =
aUnionTextRect.Union(mSelection.mFocusCharRects[ePrevCharRect]);
}
return !aUnionTextRect.IsEmpty();
}
bool
ContentCacheInParent::GetCaretRect(uint32_t aOffset,
bool aRoundToExistingOffset,
LayoutDeviceIntRect& aCaretRect) const
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("0x%p GetCaretRect(aOffset=%u, "
"aRoundToExistingOffset=%s), "
"mCaret={ mOffset=%u, mRect=%s, IsValid()=%s }, mTextRectArray={ "
"mStart=%u, mRects.Length()=%u }, mSelection={ mAnchor=%u, mFocus=%u, "
"mWritingMode=%s, mAnchorCharRects[eNextCharRect]=%s, "
"mAnchorCharRects[ePrevCharRect]=%s, mFocusCharRects[eNextCharRect]=%s, "