AI 145796: Land the WebKit merge @r42026.

Automated import of CL 145796

1 files changed, 104 insertions, 0 deletions

diff --git a/WebCore/rendering/RenderSelectionInfo.h b/WebCore/rendering/RenderSelectionInfo.h
new file mode 100644
index 0000000..e7b7b78
--- /dev/null
+++ b/WebCore/rendering/RenderSelectionInfo.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
+ *           (C) 2000 Antti Koivisto (koivisto@kde.org)
+ *           (C) 2000 Dirk Mueller (mueller@kde.org)
+ *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef SelectionInfo_h
+#define SelectionInfo_h
+
+#include "IntRect.h"
+#include "RenderBox.h"
+
+namespace WebCore {
+
+class RenderSelectionInfoBase {
+public:
+    RenderSelectionInfoBase()
+        : m_object(0)
+        , m_repaintContainer(0)
+        , m_state(RenderObject::SelectionNone)
+    {
+    }
+
+    RenderSelectionInfoBase(RenderObject* o)
+        : m_object(o)
+        , m_repaintContainer(o->containerForRepaint())
+        , m_state(o->selectionState())
+    {
+    }
+    
+    RenderObject* object() const { return m_object; }
+    RenderBoxModelObject* repaintContainer() const { return m_repaintContainer; }
+    RenderObject::SelectionState state() const { return m_state; }
+
+protected:
+    RenderObject* m_object;
+    RenderBoxModelObject* m_repaintContainer;
+    RenderObject::SelectionState m_state;
+};
+
+// This struct is used when the selection changes to cache the old and new state of the selection for each RenderObject.
+class RenderSelectionInfo : public RenderSelectionInfoBase {
+public:
+    RenderSelectionInfo(RenderObject* o, bool clipToVisibleContent)
+        : RenderSelectionInfoBase(o)
+        , m_rect(o->needsLayout() ? IntRect() : o->selectionRectForRepaint(m_repaintContainer, clipToVisibleContent))
+    {
+    }
+    
+    void repaint()
+    {
+        m_object->repaintUsingContainer(m_repaintContainer, m_rect);
+    }
+
+    IntRect rect() const { return m_rect; }
+
+private:
+    IntRect m_rect; // relative to repaint container
+};
+
+
+// This struct is used when the selection changes to cache the old and new state of the selection for each RenderBlock.
+class RenderBlockSelectionInfo : public RenderSelectionInfoBase {
+public:
+    RenderBlockSelectionInfo(RenderBlock* b)
+        : RenderSelectionInfoBase(b)
+        , m_rects(b->needsLayout() ? GapRects() : block()->selectionGapRectsForRepaint(m_repaintContainer))
+    { 
+    }
+
+    void repaint()
+    {
+        m_object->repaintUsingContainer(m_repaintContainer, m_rects);
+    }
+    
+    RenderBlock* block() const { return toRenderBlock(m_object); }
+    GapRects rects() const { return m_rects; }
+
+private:
+    GapRects m_rects; // relative to repaint container
+};
+
+} // namespace WebCore
+
+
+#endif // SelectionInfo_h