/* * 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 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. */ #pragma once #include "DOMWindowProperty.h" #include "ExceptionOr.h" #include <wtf/Forward.h> #include <wtf/RefCounted.h> #include <wtf/RefPtr.h> namespace WebCore { class Node; class Position; class Range; class VisibleSelection; class DOMSelection : public RefCounted<DOMSelection>, public DOMWindowProperty { public: static Ref<DOMSelection> create(Frame& frame) { return adoptRef(*new DOMSelection(frame)); } Node* baseNode() const; Node* extentNode() const; unsigned baseOffset() const; unsigned extentOffset() const; String type() const; void setBaseAndExtent(Node* baseNode, unsigned baseOffset, Node* extentNode, unsigned extentOffset); void setPosition(Node*, unsigned offset); void modify(const String& alter, const String& direction, const String& granularity); // The anchor and focus are the start and end of the selection, and // reflect the direction in which the selection was made by the user. // The base and extent are different, because they don't reflect expansion. Node* anchorNode() const; unsigned anchorOffset() const; Node* focusNode() const; unsigned focusOffset() const; bool isCollapsed() const; unsigned rangeCount() const; void collapse(Node*, unsigned offset); ExceptionOr<void> collapseToEnd(); ExceptionOr<void> collapseToStart(); ExceptionOr<void> extend(Node&, unsigned offset); ExceptionOr<Ref<Range>> getRangeAt(unsigned); void removeAllRanges(); void addRange(Range&); void deleteFromDocument(); bool containsNode(Node&, bool partlyContained) const; void selectAllChildren(Node&); String toString(); void empty(); private: explicit DOMSelection(Frame&); // Convenience method for accessors, caller must null-check m_frame. const VisibleSelection& visibleSelection() const; Node* shadowAdjustedNode(const Position&) const; unsigned shadowAdjustedOffset(const Position&) const; bool isValidForPosition(Node*) const; }; } // namespace WebCore