third_party/WebKit/Source/core/editing/DragCaretController.h

   1 /*
   2  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef DragCaretController_h
  27 #define DragCaretController_h
  28
  29 #include "core/editing/Caret.h"
  30
  31 namespace blink {
  32
  33 class DragCaretController final : public NoBaseWillBeGarbageCollected<DragCaretController>, private CaretBase {
  34     WTF_MAKE_NONCOPYABLE(DragCaretController);
  35     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(DragCaretController);
  36 public:
  37     static PassOwnPtrWillBeRawPtr<DragCaretController> create();
  38
  39     LayoutBlock* caretLayoutObject() const;
  40     void paintDragCaret(LocalFrame*, GraphicsContext*, const LayoutPoint&, const LayoutRect& clipRect) const;
  41
  42     bool isContentEditable() const { return m_position.rootEditableElement(); }
  43     bool isContentRichlyEditable() const;
  44
  45     bool hasCaret() const { return m_position.isNotNull(); }
  46     const VisiblePosition& caretPosition() { return m_position; }
  47     void setCaretPosition(const VisiblePosition&);
  48     void clear() { setCaretPosition(VisiblePosition()); }
  49
  50     void nodeWillBeRemoved(Node&);
  51
  52     DECLARE_TRACE();
  53
  54 private:
  55     DragCaretController();
  56
  57     VisiblePosition m_position;
  58 };
  59
  60 } // namespace blink
  61
  62 #endif // DragCaretController_h