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/*
* Copyright (C) 2007 Apple Inc. All rights reserved.
* Copyright (C) 2012 Google 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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_DOM_SELECTION_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_DOM_SELECTION_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/shadow_root.h"
#include "third_party/blink/renderer/core/dom/static_range.h"
#include "third_party/blink/renderer/core/editing/forward.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
namespace blink {
class ExceptionState;
class FrameSelection;
class GetComposedRangesOptions;
class Node;
class Range;
class SetSelectionOptions;
class TreeScope;
class CORE_EXPORT DOMSelection final : public ScriptWrappable,
public ExecutionContextClient {
DEFINE_WRAPPERTYPEINFO();
public:
explicit DOMSelection(const TreeScope*);
void ClearTreeScope();
// Safari Selection Object API
// These methods return the valid equivalents of internal editing positions.
Node* baseNode() const;
unsigned baseOffset() const;
Node* extentNode() const;
unsigned extentOffset() const;
String type() const;
void setBaseAndExtent(Node* base_node,
unsigned base_offset,
Node* extent_node,
unsigned extent_offset,
ExceptionState& = ASSERT_NO_EXCEPTION);
void modify(const String& alter,
const String& direction,
const String& granularity);
// Mozilla Selection Object API
// In Firefox, anchor/focus are the equal to the start/end of the selection,
// but reflect the direction in which the selection was made by the user. That
// does not mean that they are base/extent, since the base/extent don't
// reflect expansion.
// These methods return the valid equivalents of internal editing positions.
Node* anchorNode() const;
unsigned anchorOffset() const;
Node* focusNode() const;
unsigned focusOffset() const;
bool isCollapsed() const;
unsigned rangeCount() const;
void collapse(Node*, unsigned offset, ExceptionState&);
void collapseToEnd(ExceptionState&);
void collapseToStart(ExceptionState&);
void extend(Node*, unsigned offset, ExceptionState&);
Range* getRangeAt(unsigned, ExceptionState&) const;
void removeRange(Range*);
void removeAllRanges();
void addRange(Range*);
void deleteFromDocument();
bool containsNode(const Node*, bool partly_contained) const;
void selectAllChildren(Node*, ExceptionState&);
String toString();
// Microsoft Selection Object API
void empty();
// Selection API across shadow DOM
String direction() const;
const StaticRangeVector getComposedRanges(
const GetComposedRangesOptions*) const;
void Trace(Visitor*) const override;
private:
class TemporaryRange {
STACK_ALLOCATED();
public:
TemporaryRange(const DOMSelection*, Range*);
~TemporaryRange();
Range* GetRange();
private:
Range* range_ = nullptr;
const DOMSelection* owner_dom_selection_ = nullptr;
};
FrameSelection& Selection() const;
bool IsAvailable() const;
void UpdateFrameSelection(const SelectionInDOMTree&,
Range*,
const SetSelectionOptions&) const;
// Convenience methods for accessors, does not check owner Frame presence.
VisibleSelection GetVisibleSelection() const;
bool IsAnchorFirstInSelection() const;
Node* ShadowAdjustedNode(const Position&) const;
unsigned ShadowAdjustedOffset(const Position&) const;
bool IsValidForPosition(Node*) const;
void AddConsoleWarning(const String& message);
Range* PrimaryRangeOrNull() const;
EphemeralRange CreateRangeFromSelectionEditor() const;
bool IsSelectionOfDocument() const;
void CacheRangeIfSelectionOfDocument(Range*) const;
Range* DocumentCachedRange() const;
void ClearCachedRangeIfSelectionOfDocument();
// Rescope the provided selection endpoint to be within the list of shadow
// roots. If endpoint is inside a not listed shadow root, the endpoint will
// be rescoped to include the host element for that shadow root.
// Both arguments node and offset are references and might be modified by
// this function.
void Rescope(Node*& node,
unsigned& offset,
const HeapVector<Member<ShadowRoot>>&,
bool) const;
Member<const TreeScope> tree_scope_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_DOM_SELECTION_H_
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