| /* |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 Caret_h |
| #define Caret_h |
| |
| #include "core/editing/VisiblePosition.h" |
| #include "core/platform/graphics/IntRect.h" |
| #include "core/platform/graphics/LayoutRect.h" |
| #include "wtf/Noncopyable.h" |
| |
| namespace WebCore { |
| |
| class Frame; |
| class GraphicsContext; |
| class RenderObject; |
| class RenderView; |
| |
| class CaretBase { |
| WTF_MAKE_NONCOPYABLE(CaretBase); |
| WTF_MAKE_FAST_ALLOCATED; |
| protected: |
| enum CaretVisibility { Visible, Hidden }; |
| explicit CaretBase(CaretVisibility = Hidden); |
| |
| void invalidateCaretRect(Node*, bool caretRectChanged = false); |
| void clearCaretRect(); |
| bool updateCaretRect(Document*, const VisiblePosition& caretPosition); |
| IntRect absoluteBoundsForLocalRect(Node*, const LayoutRect&) const; |
| bool shouldRepaintCaret(const RenderView*, bool isContentEditable) const; |
| void paintCaret(Node*, GraphicsContext*, const LayoutPoint&, const LayoutRect& clipRect) const; |
| |
| const LayoutRect& localCaretRectWithoutUpdate() const { return m_caretLocalRect; } |
| |
| bool shouldUpdateCaretRect() const { return m_caretRectNeedsUpdate; } |
| void setCaretRectNeedsUpdate() { m_caretRectNeedsUpdate = true; } |
| |
| void setCaretVisibility(CaretVisibility visibility) { m_caretVisibility = visibility; } |
| bool caretIsVisible() const { return m_caretVisibility == Visible; } |
| CaretVisibility caretVisibility() const { return m_caretVisibility; } |
| |
| protected: |
| static RenderObject* caretRenderer(Node*); |
| static void repaintCaretForLocalRect(Node*, const LayoutRect&); |
| |
| private: |
| LayoutRect m_caretLocalRect; // caret rect in coords local to the renderer responsible for painting the caret |
| bool m_caretRectNeedsUpdate; // true if m_caretRect (and m_absCaretBounds in FrameSelection) need to be calculated |
| CaretVisibility m_caretVisibility; |
| }; |
| |
| class DragCaretController : private CaretBase { |
| WTF_MAKE_NONCOPYABLE(DragCaretController); |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| static PassOwnPtr<DragCaretController> create(); |
| |
| RenderObject* caretRenderer() const; |
| void paintDragCaret(Frame*, GraphicsContext*, const LayoutPoint&, const LayoutRect& clipRect) const; |
| |
| bool isContentEditable() const { return m_position.rootEditableElement(); } |
| bool isContentRichlyEditable() const; |
| |
| bool hasCaret() const { return m_position.isNotNull(); } |
| const VisiblePosition& caretPosition() { return m_position; } |
| void setCaretPosition(const VisiblePosition&); |
| void clear() { setCaretPosition(VisiblePosition()); } |
| |
| void nodeWillBeRemoved(Node*); |
| |
| private: |
| DragCaretController(); |
| |
| VisiblePosition m_position; |
| }; |
| |
| } // namespace WebCore |
| |
| |
| #endif // Caret_h |