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/*
* Copyright (C) 2005, 2006, 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 COMPUTER, 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 COMPUTER, 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_COMPOSITE_EDIT_COMMAND_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_COMPOSITE_EDIT_COMMAND_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css_property_names.h"
#include "third_party/blink/renderer/core/editing/commands/edit_command.h"
#include "third_party/blink/renderer/core/editing/commands/editing_state.h"
#include "third_party/blink/renderer/core/editing/commands/undo_step.h"
#include "third_party/blink/renderer/core/editing/forward.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
class DeleteSelectionOptions;
class EditingStyle;
class Element;
class HTMLBRElement;
class HTMLElement;
class HTMLSpanElement;
class Text;
class CORE_EXPORT CompositeEditCommand : public EditCommand {
public:
enum ShouldPreserveSelection { kPreserveSelection, kDoNotPreserveSelection };
enum ShouldPreserveStyle { kPreserveStyle, kDoNotPreserveStyle };
~CompositeEditCommand() override;
const SelectionForUndoStep& StartingSelection() const {
return starting_selection_;
}
const SelectionForUndoStep& EndingSelection() const {
return ending_selection_;
}
void SetStartingSelection(const SelectionForUndoStep&);
void SetEndingSelection(const SelectionForUndoStep&);
void SetParent(CompositeEditCommand*) override;
// Returns |false| if the command failed. e.g. It's aborted.
bool Apply();
bool IsFirstCommand(EditCommand* command) {
return !commands_.IsEmpty() && commands_.front() == command;
}
UndoStep* GetUndoStep() { return undo_step_.Get(); }
UndoStep* EnsureUndoStep();
// Append undo step from an already applied command.
void AppendCommandToUndoStep(CompositeEditCommand*);
virtual bool IsReplaceSelectionCommand() const;
virtual bool IsTypingCommand() const;
virtual bool IsCommandGroupWrapper() const;
virtual bool IsDragAndDropCommand() const;
virtual bool PreservesTypingStyle() const;
virtual void AppliedEditing();
void Trace(blink::Visitor*) override;
protected:
explicit CompositeEditCommand(Document&);
VisibleSelection EndingVisibleSelection() const;
//
// sugary-sweet convenience functions to help create and apply edit commands
// in composite commands
//
void AppendNode(Node*, ContainerNode* parent, EditingState*);
void ApplyCommandToComposite(EditCommand*, EditingState*);
void ApplyStyle(const EditingStyle*, EditingState*);
void ApplyStyle(const EditingStyle*,
const Position& start,
const Position& end,
EditingState*);
void ApplyStyledElement(Element*, EditingState*);
void RemoveStyledElement(Element*, EditingState*);
// Returns |false| if the EditingState has been aborted.
bool DeleteSelection(EditingState*, const DeleteSelectionOptions&);
virtual void DeleteTextFromNode(Text*, unsigned offset, unsigned count);
bool IsRemovableBlock(const Node*);
void InsertNodeAfter(Node*, Node* ref_child, EditingState*);
void InsertNodeAt(Node*, const Position&, EditingState*);
void InsertNodeAtTabSpanPosition(Node*, const Position&, EditingState*);
void InsertNodeBefore(Node*,
Node* ref_child,
EditingState*,
ShouldAssumeContentIsAlwaysEditable =
kDoNotAssumeContentIsAlwaysEditable);
void InsertParagraphSeparator(
EditingState*,
bool use_default_paragraph_element = false,
bool paste_blockqutoe_into_unquoted_area = false);
void InsertTextIntoNode(Text*, unsigned offset, const String& text);
void MergeIdenticalElements(Element*, Element*, EditingState*);
void RebalanceWhitespace();
void RebalanceWhitespaceAt(const Position&);
void RebalanceWhitespaceOnTextSubstring(Text*,
int start_offset,
int end_offset);
void PrepareWhitespaceAtPositionForSplit(Position&);
void ReplaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded(
const VisiblePosition&);
bool CanRebalance(const Position&) const;
void RemoveCSSProperty(Element*, CSSPropertyID);
void RemoveElementAttribute(Element*, const QualifiedName& attribute);
void RemoveChildrenInRange(Node*, unsigned from, unsigned to, EditingState*);
virtual void RemoveNode(Node*,
EditingState*,
ShouldAssumeContentIsAlwaysEditable =
kDoNotAssumeContentIsAlwaysEditable);
HTMLSpanElement* ReplaceElementWithSpanPreservingChildrenAndAttributes(
HTMLElement*);
void RemoveNodePreservingChildren(Node*,
EditingState*,
ShouldAssumeContentIsAlwaysEditable =
kDoNotAssumeContentIsAlwaysEditable);
void RemoveNodeAndPruneAncestors(Node*,
EditingState*,
Node* exclude_node = nullptr);
void MoveRemainingSiblingsToNewParent(Node*,
Node* past_last_node_to_move,
Element* new_parent,
EditingState*);
void UpdatePositionForNodeRemovalPreservingChildren(Position&, Node&);
void Prune(Node*, EditingState*, Node* exclude_node = nullptr);
void ReplaceTextInNode(Text*,
unsigned offset,
unsigned count,
const String& replacement_text);
Position ReplaceSelectedTextInNode(const String&);
Position PositionOutsideTabSpan(const Position&);
void SetNodeAttribute(Element*,
const QualifiedName& attribute,
const AtomicString& value);
void SplitElement(Element*, Node* at_child);
void SplitTextNode(Text*, unsigned offset);
void SplitTextNodeContainingElement(Text*, unsigned offset);
void WrapContentsInDummySpan(Element*);
void DeleteInsignificantText(Text*, unsigned start, unsigned end);
void DeleteInsignificantText(const Position& start, const Position& end);
void DeleteInsignificantTextDownstream(const Position&);
HTMLBRElement* AppendBlockPlaceholder(Element*, EditingState*);
HTMLBRElement* InsertBlockPlaceholder(const Position&, EditingState*);
HTMLBRElement* AddBlockPlaceholderIfNeeded(Element*, EditingState*);
void RemovePlaceholderAt(const Position&);
HTMLElement* InsertNewDefaultParagraphElementAt(const Position&,
EditingState*);
HTMLElement* MoveParagraphContentsToNewBlockIfNecessary(const Position&,
EditingState*);
void PushAnchorElementDown(Element*, EditingState*);
void MoveParagraph(const VisiblePosition&,
const VisiblePosition&,
const VisiblePosition&,
EditingState*,
ShouldPreserveSelection = kDoNotPreserveSelection,
ShouldPreserveStyle = kPreserveStyle,
Node* constraining_ancestor = nullptr);
void MoveParagraphs(const VisiblePosition&,
const VisiblePosition&,
const VisiblePosition&,
EditingState*,
ShouldPreserveSelection = kDoNotPreserveSelection,
ShouldPreserveStyle = kPreserveStyle,
Node* constraining_ancestor = nullptr);
void MoveParagraphWithClones(
const VisiblePosition& start_of_paragraph_to_move,
const VisiblePosition& end_of_paragraph_to_move,
HTMLElement* block_element,
Node* outer_node,
EditingState*);
void CloneParagraphUnderNewElement(const Position& start,
const Position& end,
Node* outer_node,
Element* block_element,
EditingState*);
void CleanupAfterDeletion(EditingState*, VisiblePosition destination);
void CleanupAfterDeletion(EditingState*);
bool BreakOutOfEmptyListItem(EditingState*);
bool BreakOutOfEmptyMailBlockquotedParagraph(EditingState*);
Position PositionAvoidingSpecialElementBoundary(const Position&,
EditingState*);
Node* SplitTreeToNode(Node*, Node*, bool split_ancestor = false);
static bool IsNodeVisiblyContainedWithin(Node&, const EphemeralRange&);
HeapVector<Member<EditCommand>> commands_;
private:
bool IsCompositeEditCommand() const final { return true; }
SelectionForUndoStep starting_selection_;
SelectionForUndoStep ending_selection_;
Member<UndoStep> undo_step_;
};
DEFINE_TYPE_CASTS(CompositeEditCommand,
EditCommand,
command,
command->IsCompositeEditCommand(),
command.IsCompositeEditCommand());
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_COMPOSITE_EDIT_COMMAND_H_
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