| /* |
| * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "TypingCommand.h" |
| |
| #include "AXObjectCache.h" |
| |
| #include "BreakBlockquoteCommand.h" |
| #include "DeleteSelectionCommand.h" |
| #include "Document.h" |
| #include "Editor.h" |
| #include "Element.h" |
| #include "Frame.h" |
| #include "HTMLElement.h" |
| #include "HTMLNames.h" |
| #include "InsertLineBreakCommand.h" |
| #include "InsertParagraphSeparatorCommand.h" |
| #include "InsertTextCommand.h" |
| #include "MathMLElement.h" |
| #include "RenderElement.h" |
| #include "TextIterator.h" |
| #include "VisibleUnits.h" |
| #include "htmlediting.h" |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| class TypingCommandLineOperation |
| { |
| public: |
| TypingCommandLineOperation(TypingCommand* typingCommand, bool selectInsertedText, const String& text) |
| : m_typingCommand(typingCommand) |
| , m_selectInsertedText(selectInsertedText) |
| , m_text(text) |
| { } |
| |
| void operator()(size_t lineOffset, size_t lineLength, bool isLastLine) const |
| { |
| if (isLastLine) { |
| if (!lineOffset || lineLength > 0) |
| m_typingCommand->insertTextRunWithoutNewlines(m_text.substring(lineOffset, lineLength), m_selectInsertedText); |
| } else { |
| if (lineLength > 0) |
| m_typingCommand->insertTextRunWithoutNewlines(m_text.substring(lineOffset, lineLength), false); |
| m_typingCommand->insertParagraphSeparator(); |
| } |
| } |
| |
| private: |
| TypingCommand* m_typingCommand; |
| bool m_selectInsertedText; |
| const String& m_text; |
| }; |
| |
| TypingCommand::TypingCommand(Document& document, ETypingCommand commandType, const String &textToInsert, Options options, TextGranularity granularity, TextCompositionType compositionType) |
| : TextInsertionBaseCommand(document, EditActionTyping) |
| , m_commandType(commandType) |
| , m_textToInsert(textToInsert) |
| , m_openForMoreTyping(true) |
| , m_selectInsertedText(options & SelectInsertedText) |
| , m_smartDelete(options & SmartDelete) |
| , m_granularity(granularity) |
| , m_compositionType(compositionType) |
| , m_shouldAddToKillRing(options & AddsToKillRing) |
| , m_openedByBackwardDelete(false) |
| , m_shouldRetainAutocorrectionIndicator(options & RetainAutocorrectionIndicator) |
| , m_shouldPreventSpellChecking(options & PreventSpellChecking) |
| { |
| updatePreservesTypingStyle(m_commandType); |
| } |
| |
| void TypingCommand::deleteSelection(Document& document, Options options) |
| { |
| Frame* frame = document.frame(); |
| ASSERT(frame); |
| |
| if (!frame->selection().isRange()) |
| return; |
| |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*frame)) { |
| lastTypingCommand->setShouldPreventSpellChecking(options & PreventSpellChecking); |
| lastTypingCommand->deleteSelection(options & SmartDelete); |
| return; |
| } |
| |
| TypingCommand::create(document, DeleteSelection, "", options)->apply(); |
| } |
| |
| void TypingCommand::deleteKeyPressed(Document& document, Options options, TextGranularity granularity) |
| { |
| if (granularity == CharacterGranularity) { |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*document.frame())) { |
| updateSelectionIfDifferentFromCurrentSelection(lastTypingCommand.get(), document.frame()); |
| lastTypingCommand->setShouldPreventSpellChecking(options & PreventSpellChecking); |
| lastTypingCommand->deleteKeyPressed(granularity, options & AddsToKillRing); |
| return; |
| } |
| } |
| |
| TypingCommand::create(document, DeleteKey, "", options, granularity)->apply(); |
| } |
| |
| void TypingCommand::forwardDeleteKeyPressed(Document& document, Options options, TextGranularity granularity) |
| { |
| // FIXME: Forward delete in TextEdit appears to open and close a new typing command. |
| Frame* frame = document.frame(); |
| if (granularity == CharacterGranularity) { |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*frame)) { |
| updateSelectionIfDifferentFromCurrentSelection(lastTypingCommand.get(), frame); |
| lastTypingCommand->setShouldPreventSpellChecking(options & PreventSpellChecking); |
| lastTypingCommand->forwardDeleteKeyPressed(granularity, options & AddsToKillRing); |
| return; |
| } |
| } |
| |
| TypingCommand::create(document, ForwardDeleteKey, "", options, granularity)->apply(); |
| } |
| |
| void TypingCommand::updateSelectionIfDifferentFromCurrentSelection(TypingCommand* typingCommand, Frame* frame) |
| { |
| ASSERT(frame); |
| VisibleSelection currentSelection = frame->selection().selection(); |
| if (currentSelection == typingCommand->endingSelection()) |
| return; |
| |
| typingCommand->setStartingSelection(currentSelection); |
| typingCommand->setEndingSelection(currentSelection); |
| } |
| |
| void TypingCommand::insertText(Document& document, const String& text, Options options, TextCompositionType composition) |
| { |
| Frame* frame = document.frame(); |
| ASSERT(frame); |
| |
| if (!text.isEmpty()) |
| frame->editor().updateMarkersForWordsAffectedByEditing(isSpaceOrNewline(text[0])); |
| |
| insertText(document, text, frame->selection().selection(), options, composition); |
| } |
| |
| // FIXME: We shouldn't need to take selectionForInsertion. It should be identical to FrameSelection's current selection. |
| void TypingCommand::insertText(Document& document, const String& text, const VisibleSelection& selectionForInsertion, Options options, TextCompositionType compositionType) |
| { |
| RefPtr<Frame> frame = document.frame(); |
| ASSERT(frame); |
| |
| VisibleSelection currentSelection = frame->selection().selection(); |
| |
| String newText = dispatchBeforeTextInsertedEvent(text, selectionForInsertion, compositionType == TextCompositionUpdate); |
| |
| // Set the starting and ending selection appropriately if we are using a selection |
| // that is different from the current selection. In the future, we should change EditCommand |
| // to deal with custom selections in a general way that can be used by all of the commands. |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*frame)) { |
| if (lastTypingCommand->endingSelection() != selectionForInsertion) { |
| lastTypingCommand->setStartingSelection(selectionForInsertion); |
| lastTypingCommand->setEndingSelection(selectionForInsertion); |
| } |
| |
| lastTypingCommand->setCompositionType(compositionType); |
| lastTypingCommand->setShouldRetainAutocorrectionIndicator(options & RetainAutocorrectionIndicator); |
| lastTypingCommand->setShouldPreventSpellChecking(options & PreventSpellChecking); |
| lastTypingCommand->insertTextAndNotifyAccessibility(newText, options & SelectInsertedText); |
| return; |
| } |
| |
| RefPtr<TypingCommand> cmd = TypingCommand::create(document, InsertText, newText, options, compositionType); |
| applyTextInsertionCommand(frame.get(), *cmd, selectionForInsertion, currentSelection); |
| } |
| |
| void TypingCommand::insertLineBreak(Document& document, Options options) |
| { |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*document.frame())) { |
| lastTypingCommand->setShouldRetainAutocorrectionIndicator(options & RetainAutocorrectionIndicator); |
| lastTypingCommand->insertLineBreakAndNotifyAccessibility(); |
| return; |
| } |
| |
| applyCommand(TypingCommand::create(document, InsertLineBreak, "", options)); |
| } |
| |
| void TypingCommand::insertParagraphSeparatorInQuotedContent(Document& document) |
| { |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*document.frame())) { |
| lastTypingCommand->insertParagraphSeparatorInQuotedContentAndNotifyAccessibility(); |
| return; |
| } |
| |
| applyCommand(TypingCommand::create(document, InsertParagraphSeparatorInQuotedContent)); |
| } |
| |
| void TypingCommand::insertParagraphSeparator(Document& document, Options options) |
| { |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*document.frame())) { |
| lastTypingCommand->setShouldRetainAutocorrectionIndicator(options & RetainAutocorrectionIndicator); |
| lastTypingCommand->insertParagraphSeparatorAndNotifyAccessibility(); |
| return; |
| } |
| |
| applyCommand(TypingCommand::create(document, InsertParagraphSeparator, "", options)); |
| } |
| |
| RefPtr<TypingCommand> TypingCommand::lastTypingCommandIfStillOpenForTyping(Frame& frame) |
| { |
| RefPtr<CompositeEditCommand> lastEditCommand = frame.editor().lastEditCommand(); |
| if (!lastEditCommand || !lastEditCommand->isTypingCommand() || !static_cast<TypingCommand*>(lastEditCommand.get())->isOpenForMoreTyping()) |
| return nullptr; |
| |
| return static_cast<TypingCommand*>(lastEditCommand.get()); |
| } |
| |
| void TypingCommand::closeTyping(Frame* frame) |
| { |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*frame)) |
| lastTypingCommand->closeTyping(); |
| } |
| |
| #if PLATFORM(IOS) |
| void TypingCommand::ensureLastEditCommandHasCurrentSelectionIfOpenForMoreTyping(Frame* frame, const VisibleSelection& newSelection) |
| { |
| if (RefPtr<TypingCommand> lastTypingCommand = lastTypingCommandIfStillOpenForTyping(*frame)) { |
| lastTypingCommand->setEndingSelection(newSelection); |
| lastTypingCommand->setEndingSelectionOnLastInsertCommand(newSelection); |
| } |
| } |
| #endif |
| |
| void TypingCommand::postTextStateChangeNotificationForDeletion(const VisibleSelection& selection) |
| { |
| #if HAVE(ACCESSIBILITY) |
| if (!AXObjectCache::accessibilityEnabled()) |
| return; |
| postTextStateChangeNotification(AXTextEditTypeDelete, AccessibilityObject::stringForVisiblePositionRange(selection), selection.start()); |
| VisiblePositionIndexRange range; |
| range.startIndex.value = indexForVisiblePosition(selection.start(), range.startIndex.scope); |
| range.endIndex.value = indexForVisiblePosition(selection.end(), range.endIndex.scope); |
| composition()->setRangeDeletedByUnapply(range); |
| #endif |
| } |
| |
| void TypingCommand::doApply() |
| { |
| if (endingSelection().isNoneOrOrphaned()) |
| return; |
| |
| if (m_commandType == DeleteKey) |
| if (m_commands.isEmpty()) |
| m_openedByBackwardDelete = true; |
| |
| switch (m_commandType) { |
| case DeleteSelection: |
| deleteSelection(m_smartDelete); |
| return; |
| case DeleteKey: |
| deleteKeyPressed(m_granularity, m_shouldAddToKillRing); |
| return; |
| case ForwardDeleteKey: |
| forwardDeleteKeyPressed(m_granularity, m_shouldAddToKillRing); |
| return; |
| case InsertLineBreak: |
| insertLineBreakAndNotifyAccessibility(); |
| return; |
| case InsertParagraphSeparator: |
| insertParagraphSeparatorAndNotifyAccessibility(); |
| return; |
| case InsertParagraphSeparatorInQuotedContent: |
| insertParagraphSeparatorInQuotedContentAndNotifyAccessibility(); |
| return; |
| case InsertText: |
| insertTextAndNotifyAccessibility(m_textToInsert, m_selectInsertedText); |
| return; |
| } |
| |
| ASSERT_NOT_REACHED(); |
| } |
| |
| void TypingCommand::markMisspellingsAfterTyping(ETypingCommand commandType) |
| { |
| Frame& frame = this->frame(); |
| |
| #if PLATFORM(MAC) |
| if (!frame.editor().isContinuousSpellCheckingEnabled() |
| && !frame.editor().isAutomaticQuoteSubstitutionEnabled() |
| && !frame.editor().isAutomaticLinkDetectionEnabled() |
| && !frame.editor().isAutomaticDashSubstitutionEnabled() |
| && !frame.editor().isAutomaticTextReplacementEnabled()) |
| return; |
| if (frame.editor().isHandlingAcceptedCandidate()) |
| return; |
| #else |
| if (!frame.editor().isContinuousSpellCheckingEnabled()) |
| return; |
| #endif |
| // Take a look at the selection that results after typing and determine whether we need to spellcheck. |
| // Since the word containing the current selection is never marked, this does a check to |
| // see if typing made a new word that is not in the current selection. Basically, you |
| // get this by being at the end of a word and typing a space. |
| VisiblePosition start(endingSelection().start(), endingSelection().affinity()); |
| VisiblePosition previous = start.previous(); |
| if (previous.isNotNull()) { |
| #if !PLATFORM(IOS) |
| VisiblePosition p1 = startOfWord(previous, LeftWordIfOnBoundary); |
| VisiblePosition p2 = startOfWord(start, LeftWordIfOnBoundary); |
| if (p1 != p2) { |
| RefPtr<Range> range = makeRange(p1, p2); |
| String strippedPreviousWord; |
| if (range && (commandType == TypingCommand::InsertText || commandType == TypingCommand::InsertLineBreak || commandType == TypingCommand::InsertParagraphSeparator || commandType == TypingCommand::InsertParagraphSeparatorInQuotedContent)) |
| strippedPreviousWord = plainText(range.get()).stripWhiteSpace(); |
| frame.editor().markMisspellingsAfterTypingToWord(p1, endingSelection(), !strippedPreviousWord.isEmpty()); |
| } else if (commandType == TypingCommand::InsertText) |
| frame.editor().startAlternativeTextUITimer(); |
| #else |
| UNUSED_PARAM(commandType); |
| // If this bug gets fixed, this PLATFORM(IOS) code could be removed: |
| // <rdar://problem/7259611> Word boundary code on iPhone gives different results than desktop |
| EWordSide startWordSide = LeftWordIfOnBoundary; |
| UChar32 c = previous.characterAfter(); |
| // FIXME: VisiblePosition::characterAfter() and characterBefore() do not emit newlines the same |
| // way as TextIterator, so we do an isEndOfParagraph check here. |
| if (isSpaceOrNewline(c) || c == 0xA0 || isEndOfParagraph(previous)) { |
| startWordSide = RightWordIfOnBoundary; |
| } |
| VisiblePosition p1 = startOfWord(previous, startWordSide); |
| VisiblePosition p2 = startOfWord(start, startWordSide); |
| if (p1 != p2) |
| frame.editor().markMisspellingsAfterTypingToWord(p1, endingSelection(), false); |
| #endif // !PLATFORM(IOS) |
| } |
| } |
| |
| void TypingCommand::typingAddedToOpenCommand(ETypingCommand commandTypeForAddedTyping) |
| { |
| Frame& frame = this->frame(); |
| |
| updatePreservesTypingStyle(commandTypeForAddedTyping); |
| |
| #if PLATFORM(COCOA) |
| frame.editor().appliedEditing(this); |
| // Since the spellchecking code may also perform corrections and other replacements, it should happen after the typing changes. |
| if (!m_shouldPreventSpellChecking) |
| markMisspellingsAfterTyping(commandTypeForAddedTyping); |
| #else |
| // The old spellchecking code requires that checking be done first, to prevent issues like that in 6864072, where <doesn't> is marked as misspelled. |
| markMisspellingsAfterTyping(commandTypeForAddedTyping); |
| frame.editor().appliedEditing(this); |
| #endif |
| } |
| |
| void TypingCommand::insertText(const String &text, bool selectInsertedText) |
| { |
| // FIXME: Need to implement selectInsertedText for cases where more than one insert is involved. |
| // This requires support from insertTextRunWithoutNewlines and insertParagraphSeparator for extending |
| // an existing selection; at the moment they can either put the caret after what's inserted or |
| // select what's inserted, but there's no way to "extend selection" to include both an old selection |
| // that ends just before where we want to insert text and the newly inserted text. |
| TypingCommandLineOperation operation(this, selectInsertedText, text); |
| forEachLineInString(text, operation); |
| } |
| |
| void TypingCommand::insertTextAndNotifyAccessibility(const String &text, bool selectInsertedText) |
| { |
| AccessibilityReplacedText replacedText(frame().selection().selection()); |
| insertText(text, selectInsertedText); |
| replacedText.postTextStateChangeNotification(document().existingAXObjectCache(), AXTextEditTypeTyping, text, frame().selection().selection()); |
| composition()->setRangeDeletedByUnapply(replacedText.replacedRange()); |
| } |
| |
| void TypingCommand::insertTextRunWithoutNewlines(const String &text, bool selectInsertedText) |
| { |
| RefPtr<InsertTextCommand> command = InsertTextCommand::create(document(), text, selectInsertedText, |
| m_compositionType == TextCompositionNone ? InsertTextCommand::RebalanceLeadingAndTrailingWhitespaces : InsertTextCommand::RebalanceAllWhitespaces, EditActionTyping); |
| |
| applyCommandToComposite(command, endingSelection()); |
| |
| typingAddedToOpenCommand(InsertText); |
| } |
| |
| void TypingCommand::insertLineBreak() |
| { |
| if (!canAppendNewLineFeedToSelection(endingSelection())) |
| return; |
| |
| applyCommandToComposite(InsertLineBreakCommand::create(document())); |
| typingAddedToOpenCommand(InsertLineBreak); |
| } |
| |
| void TypingCommand::insertLineBreakAndNotifyAccessibility() |
| { |
| AccessibilityReplacedText replacedText(frame().selection().selection()); |
| insertLineBreak(); |
| replacedText.postTextStateChangeNotification(document().existingAXObjectCache(), AXTextEditTypeTyping, "\n", frame().selection().selection()); |
| composition()->setRangeDeletedByUnapply(replacedText.replacedRange()); |
| } |
| |
| void TypingCommand::insertParagraphSeparator() |
| { |
| if (!canAppendNewLineFeedToSelection(endingSelection())) |
| return; |
| |
| applyCommandToComposite(InsertParagraphSeparatorCommand::create(document(), false, false, EditActionTyping)); |
| typingAddedToOpenCommand(InsertParagraphSeparator); |
| } |
| |
| void TypingCommand::insertParagraphSeparatorAndNotifyAccessibility() |
| { |
| AccessibilityReplacedText replacedText(frame().selection().selection()); |
| insertParagraphSeparator(); |
| replacedText.postTextStateChangeNotification(document().existingAXObjectCache(), AXTextEditTypeTyping, "\n", frame().selection().selection()); |
| composition()->setRangeDeletedByUnapply(replacedText.replacedRange()); |
| } |
| |
| void TypingCommand::insertParagraphSeparatorInQuotedContent() |
| { |
| // If the selection starts inside a table, just insert the paragraph separator normally |
| // Breaking the blockquote would also break apart the table, which is unecessary when inserting a newline |
| if (enclosingNodeOfType(endingSelection().start(), &isTableStructureNode)) { |
| insertParagraphSeparator(); |
| return; |
| } |
| |
| applyCommandToComposite(BreakBlockquoteCommand::create(document())); |
| typingAddedToOpenCommand(InsertParagraphSeparatorInQuotedContent); |
| } |
| |
| void TypingCommand::insertParagraphSeparatorInQuotedContentAndNotifyAccessibility() |
| { |
| AccessibilityReplacedText replacedText(frame().selection().selection()); |
| insertParagraphSeparatorInQuotedContent(); |
| replacedText.postTextStateChangeNotification(document().existingAXObjectCache(), AXTextEditTypeTyping, "\n", frame().selection().selection()); |
| composition()->setRangeDeletedByUnapply(replacedText.replacedRange()); |
| } |
| |
| bool TypingCommand::makeEditableRootEmpty() |
| { |
| Element* root = endingSelection().rootEditableElement(); |
| if (!root || !root->firstChild()) |
| return false; |
| |
| if (root->firstChild() == root->lastChild() && root->firstElementChild() && root->firstElementChild()->hasTagName(brTag)) { |
| // If there is a single child and it could be a placeholder, leave it alone. |
| if (root->renderer() && root->renderer()->isRenderBlockFlow()) |
| return false; |
| } |
| |
| while (Node* child = root->firstChild()) |
| removeNode(child); |
| |
| addBlockPlaceholderIfNeeded(root); |
| setEndingSelection(VisibleSelection(firstPositionInNode(root), DOWNSTREAM, endingSelection().isDirectional())); |
| |
| return true; |
| } |
| |
| void TypingCommand::deleteKeyPressed(TextGranularity granularity, bool shouldAddToKillRing) |
| { |
| Frame& frame = this->frame(); |
| |
| frame.editor().updateMarkersForWordsAffectedByEditing(false); |
| |
| VisibleSelection selectionToDelete; |
| VisibleSelection selectionAfterUndo; |
| |
| switch (endingSelection().selectionType()) { |
| case VisibleSelection::RangeSelection: |
| selectionToDelete = endingSelection(); |
| selectionAfterUndo = selectionToDelete; |
| break; |
| case VisibleSelection::CaretSelection: { |
| // After breaking out of an empty mail blockquote, we still want continue with the deletion |
| // so actual content will get deleted, and not just the quote style. |
| if (breakOutOfEmptyMailBlockquotedParagraph()) |
| typingAddedToOpenCommand(DeleteKey); |
| |
| m_smartDelete = false; |
| |
| FrameSelection selection; |
| selection.setSelection(endingSelection()); |
| selection.modify(FrameSelection::AlterationExtend, DirectionBackward, granularity); |
| if (shouldAddToKillRing && selection.isCaret() && granularity != CharacterGranularity) |
| selection.modify(FrameSelection::AlterationExtend, DirectionBackward, CharacterGranularity); |
| |
| if (endingSelection().visibleStart().previous(CannotCrossEditingBoundary).isNull()) { |
| // When the caret is at the start of the editable area in an empty list item, break out of the list item. |
| if (breakOutOfEmptyListItem()) { |
| typingAddedToOpenCommand(DeleteKey); |
| return; |
| } |
| // When there are no visible positions in the editing root, delete its entire contents. |
| if (endingSelection().visibleStart().next(CannotCrossEditingBoundary).isNull() && makeEditableRootEmpty()) { |
| typingAddedToOpenCommand(DeleteKey); |
| return; |
| } |
| } |
| |
| VisiblePosition visibleStart(endingSelection().visibleStart()); |
| // If we have a caret selection at the beginning of a cell, we have nothing to do. |
| Node* enclosingTableCell = enclosingNodeOfType(visibleStart.deepEquivalent(), &isTableCell); |
| if (enclosingTableCell && visibleStart == firstPositionInNode(enclosingTableCell)) |
| return; |
| |
| // If the caret is at the start of a paragraph after a table, move content into the last table cell. |
| if (isStartOfParagraph(visibleStart) && isFirstPositionAfterTable(visibleStart.previous(CannotCrossEditingBoundary))) { |
| // Unless the caret is just before a table. We don't want to move a table into the last table cell. |
| if (isLastPositionBeforeTable(visibleStart)) |
| return; |
| // Extend the selection backward into the last cell, then deletion will handle the move. |
| selection.modify(FrameSelection::AlterationExtend, DirectionBackward, granularity); |
| // If the caret is just after a table, select the table and don't delete anything. |
| } else if (Node* table = isFirstPositionAfterTable(visibleStart)) { |
| setEndingSelection(VisibleSelection(positionBeforeNode(table), endingSelection().start(), DOWNSTREAM, endingSelection().isDirectional())); |
| typingAddedToOpenCommand(DeleteKey); |
| return; |
| } |
| |
| selectionToDelete = selection.selection(); |
| |
| if (granularity == CharacterGranularity && selectionToDelete.end().containerNode() == selectionToDelete.start().containerNode() |
| && selectionToDelete.end().computeOffsetInContainerNode() - selectionToDelete.start().computeOffsetInContainerNode() > 1) { |
| // If there are multiple Unicode code points to be deleted, adjust the range to match platform conventions. |
| selectionToDelete.setWithoutValidation(selectionToDelete.end(), selectionToDelete.end().previous(BackwardDeletion)); |
| } |
| |
| if (!startingSelection().isRange() || selectionToDelete.base() != startingSelection().start()) |
| selectionAfterUndo = selectionToDelete; |
| else |
| // It's a little tricky to compute what the starting selection would have been in the original document. |
| // We can't let the VisibleSelection class's validation kick in or it'll adjust for us based on |
| // the current state of the document and we'll get the wrong result. |
| selectionAfterUndo.setWithoutValidation(startingSelection().end(), selectionToDelete.extent()); |
| break; |
| } |
| case VisibleSelection::NoSelection: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| |
| ASSERT(!selectionToDelete.isNone()); |
| if (selectionToDelete.isNone()) { |
| #if PLATFORM(IOS) |
| // Workaround for this bug: |
| // <rdar://problem/4653755> UIKit text widgets should use WebKit editing API to manipulate text |
| setEndingSelection(frame.selection().selection()); |
| closeTyping(&frame); |
| #endif |
| return; |
| } |
| |
| if (selectionToDelete.isCaret() || !frame.selection().shouldDeleteSelection(selectionToDelete)) |
| return; |
| |
| if (shouldAddToKillRing) |
| frame.editor().addRangeToKillRing(*selectionToDelete.toNormalizedRange().get(), Editor::KillRingInsertionMode::PrependText); |
| |
| // Post the accessibility notification before actually deleting the content while selectionToDelete is still valid |
| postTextStateChangeNotificationForDeletion(selectionToDelete); |
| |
| // Make undo select everything that has been deleted, unless an undo will undo more than just this deletion. |
| // FIXME: This behaves like TextEdit except for the case where you open with text insertion and then delete |
| // more text than you insert. In that case all of the text that was around originally should be selected. |
| if (m_openedByBackwardDelete) |
| setStartingSelection(selectionAfterUndo); |
| CompositeEditCommand::deleteSelection(selectionToDelete, m_smartDelete); |
| setSmartDelete(false); |
| typingAddedToOpenCommand(DeleteKey); |
| } |
| |
| void TypingCommand::forwardDeleteKeyPressed(TextGranularity granularity, bool shouldAddToKillRing) |
| { |
| Frame& frame = this->frame(); |
| |
| frame.editor().updateMarkersForWordsAffectedByEditing(false); |
| |
| VisibleSelection selectionToDelete; |
| VisibleSelection selectionAfterUndo; |
| |
| switch (endingSelection().selectionType()) { |
| case VisibleSelection::RangeSelection: |
| selectionToDelete = endingSelection(); |
| selectionAfterUndo = selectionToDelete; |
| break; |
| case VisibleSelection::CaretSelection: { |
| m_smartDelete = false; |
| |
| // Handle delete at beginning-of-block case. |
| // Do nothing in the case that the caret is at the start of a |
| // root editable element or at the start of a document. |
| FrameSelection selection; |
| selection.setSelection(endingSelection()); |
| selection.modify(FrameSelection::AlterationExtend, DirectionForward, granularity); |
| if (shouldAddToKillRing && selection.isCaret() && granularity != CharacterGranularity) |
| selection.modify(FrameSelection::AlterationExtend, DirectionForward, CharacterGranularity); |
| |
| Position downstreamEnd = endingSelection().end().downstream(); |
| VisiblePosition visibleEnd = endingSelection().visibleEnd(); |
| Node* enclosingTableCell = enclosingNodeOfType(visibleEnd.deepEquivalent(), &isTableCell); |
| if (enclosingTableCell && visibleEnd == lastPositionInNode(enclosingTableCell)) |
| return; |
| if (visibleEnd == endOfParagraph(visibleEnd)) |
| downstreamEnd = visibleEnd.next(CannotCrossEditingBoundary).deepEquivalent().downstream(); |
| // When deleting tables: Select the table first, then perform the deletion |
| if (downstreamEnd.containerNode() && downstreamEnd.containerNode()->renderer() && downstreamEnd.containerNode()->renderer()->isTable() |
| && downstreamEnd.computeOffsetInContainerNode() <= caretMinOffset(*downstreamEnd.containerNode())) { |
| setEndingSelection(VisibleSelection(endingSelection().end(), positionAfterNode(downstreamEnd.containerNode()), DOWNSTREAM, endingSelection().isDirectional())); |
| typingAddedToOpenCommand(ForwardDeleteKey); |
| return; |
| } |
| |
| // deleting to end of paragraph when at end of paragraph needs to merge the next paragraph (if any) |
| if (granularity == ParagraphBoundary && selection.selection().isCaret() && isEndOfParagraph(selection.selection().visibleEnd())) |
| selection.modify(FrameSelection::AlterationExtend, DirectionForward, CharacterGranularity); |
| |
| selectionToDelete = selection.selection(); |
| if (!startingSelection().isRange() || selectionToDelete.base() != startingSelection().start()) |
| selectionAfterUndo = selectionToDelete; |
| else { |
| // It's a little tricky to compute what the starting selection would have been in the original document. |
| // We can't let the VisibleSelection class's validation kick in or it'll adjust for us based on |
| // the current state of the document and we'll get the wrong result. |
| Position extent = startingSelection().end(); |
| if (extent.containerNode() != selectionToDelete.end().containerNode()) |
| extent = selectionToDelete.extent(); |
| else { |
| int extraCharacters; |
| if (selectionToDelete.start().containerNode() == selectionToDelete.end().containerNode()) |
| extraCharacters = selectionToDelete.end().computeOffsetInContainerNode() - selectionToDelete.start().computeOffsetInContainerNode(); |
| else |
| extraCharacters = selectionToDelete.end().computeOffsetInContainerNode(); |
| extent = Position(extent.containerNode(), extent.computeOffsetInContainerNode() + extraCharacters, Position::PositionIsOffsetInAnchor); |
| } |
| selectionAfterUndo.setWithoutValidation(startingSelection().start(), extent); |
| } |
| break; |
| } |
| case VisibleSelection::NoSelection: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| |
| ASSERT(!selectionToDelete.isNone()); |
| if (selectionToDelete.isNone()) { |
| #if PLATFORM(IOS) |
| // Workaround for this bug: |
| // <rdar://problem/4653755> UIKit text widgets should use WebKit editing API to manipulate text |
| setEndingSelection(frame.selection().selection()); |
| closeTyping(&frame); |
| #endif |
| return; |
| } |
| |
| if (selectionToDelete.isCaret() || !frame.selection().shouldDeleteSelection(selectionToDelete)) |
| return; |
| |
| // Post the accessibility notification before actually deleting the content while selectionToDelete is still valid |
| postTextStateChangeNotificationForDeletion(selectionToDelete); |
| |
| if (shouldAddToKillRing) |
| frame.editor().addRangeToKillRing(*selectionToDelete.toNormalizedRange().get(), Editor::KillRingInsertionMode::AppendText); |
| // make undo select what was deleted |
| setStartingSelection(selectionAfterUndo); |
| CompositeEditCommand::deleteSelection(selectionToDelete, m_smartDelete); |
| setSmartDelete(false); |
| typingAddedToOpenCommand(ForwardDeleteKey); |
| } |
| |
| void TypingCommand::deleteSelection(bool smartDelete) |
| { |
| CompositeEditCommand::deleteSelection(smartDelete); |
| typingAddedToOpenCommand(DeleteSelection); |
| } |
| |
| #if PLATFORM(IOS) |
| class FriendlyEditCommand : public EditCommand { |
| public: |
| void setEndingSelection(const VisibleSelection& selection) |
| { |
| EditCommand::setEndingSelection(selection); |
| } |
| }; |
| |
| void TypingCommand::setEndingSelectionOnLastInsertCommand(const VisibleSelection& selection) |
| { |
| if (!m_commands.isEmpty()) { |
| EditCommand* lastCommand = m_commands.last().get(); |
| if (lastCommand->isInsertTextCommand()) |
| static_cast<FriendlyEditCommand*>(lastCommand)->setEndingSelection(selection); |
| } |
| } |
| #endif |
| |
| void TypingCommand::updatePreservesTypingStyle(ETypingCommand commandType) |
| { |
| switch (commandType) { |
| case DeleteSelection: |
| case DeleteKey: |
| case ForwardDeleteKey: |
| case InsertParagraphSeparator: |
| case InsertLineBreak: |
| m_preservesTypingStyle = true; |
| return; |
| case InsertParagraphSeparatorInQuotedContent: |
| case InsertText: |
| m_preservesTypingStyle = false; |
| return; |
| } |
| ASSERT_NOT_REACHED(); |
| m_preservesTypingStyle = false; |
| } |
| |
| bool TypingCommand::isTypingCommand() const |
| { |
| return true; |
| } |
| |
| } // namespace WebCore |
