Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 341 insertions, 0 deletions

diff --git a/Source/WebCore/platform/Widget.h b/Source/WebCore/platform/Widget.h
new file mode 100644
index 0000000..2b3a1a6
--- /dev/null
+++ b/Source/WebCore/platform/Widget.h
@@ -0,0 +1,341 @@
+/*
+ * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
+ * Copyright (C) 2008 Collabora Ltd.  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 Widget_h
+#define Widget_h
+
+#include "IntRect.h"
+#include <wtf/Forward.h>
+#include <wtf/RefCounted.h>
+
+#if PLATFORM(CHROMIUM)
+#include "PlatformWidget.h"
+#endif
+
+#if PLATFORM(MAC)
+#include <wtf/RetainPtr.h>
+#endif
+
+#if PLATFORM(QT)
+#include <qglobal.h>
+#include <QWeakPointer>
+#endif
+
+#if PLATFORM(MAC)
+#ifdef __OBJC__
+@class NSView;
+@class NSWindow;
+#else
+class NSView;
+class NSWindow;
+#endif
+typedef NSView *PlatformWidget;
+#endif
+
+#if PLATFORM(ANDROID)
+class WebCoreViewBridge;
+typedef WebCoreViewBridge* PlatformWidget;
+#endif
+
+#if PLATFORM(WIN)
+typedef struct HWND__* HWND;
+typedef HWND PlatformWidget;
+#endif
+
+#if PLATFORM(GTK)
+typedef struct _GtkWidget GtkWidget;
+typedef struct _GtkContainer GtkContainer;
+typedef GtkWidget* PlatformWidget;
+#endif
+
+#if PLATFORM(QT)
+QT_BEGIN_NAMESPACE
+class QWidget;
+QT_END_NAMESPACE
+typedef QWidget* PlatformWidget;
+#endif
+
+#if PLATFORM(WX)
+class wxWindow;
+typedef wxWindow* PlatformWidget;
+#endif
+
+#if PLATFORM(HAIKU)
+class BView;
+typedef BView* PlatformWidget;
+#endif
+
+#if PLATFORM(BREWMP)
+typedef void* PlatformWidget;
+#endif
+
+#if PLATFORM(EFL)
+typedef struct _Evas_Object Evas_Object;
+typedef struct _Evas Evas;
+typedef struct _Ecore_Evas Ecore_Evas;
+typedef Evas_Object* PlatformWidget;
+#endif
+
+#if PLATFORM(QT)
+class QWebPageClient;
+typedef QWebPageClient* PlatformPageClient;
+#else
+typedef PlatformWidget PlatformPageClient;
+#endif
+
+namespace WebCore {
+
+class AXObjectCache;
+class Cursor;
+class Event;
+class Font;
+class GraphicsContext;
+class PlatformMouseEvent;
+class ScrollView;
+class WidgetPrivate;
+
+enum WidgetNotification { WillPaintFlattened, DidPaintFlattened };
+
+// The Widget class serves as a base class for three kinds of objects:
+// (1) Scrollable areas (ScrollView)
+// (2) Scrollbars (Scrollbar)
+// (3) Plugins (PluginView)
+//
+// A widget may or may not be backed by a platform-specific object (e.g., HWND on Windows, NSView on Mac, QWidget on Qt).
+//
+// Widgets are connected in a hierarchy, with the restriction that plugins and scrollbars are always leaves of the
+// tree.  Only ScrollViews can have children (and therefore the Widget class has no concept of children).
+//
+// The rules right now for which widgets get platform-specific objects are as follows:
+// ScrollView - Mac
+// Scrollbar - Mac, Gtk
+// Plugin - Mac, Windows (windowed only), Qt (windowed only, widget is an HWND on windows), Gtk (windowed only)
+//
+class Widget : public RefCounted<Widget> {
+public:
+    Widget(PlatformWidget = 0);
+    virtual ~Widget();
+
+    PlatformWidget platformWidget() const;
+    void setPlatformWidget(PlatformWidget);
+
+#if PLATFORM(HAIKU)
+    PlatformWidget topLevelPlatformWidget() const { return m_topLevelPlatformWidget; }
+    void setTopLevelPlatformWidget(PlatformWidget widget)
+    {
+        m_topLevelPlatformWidget = widget;
+    }
+#endif
+
+    int x() const { return frameRect().x(); }
+    int y() const { return frameRect().y(); }
+    int width() const { return frameRect().width(); }
+    int height() const { return frameRect().height(); }
+    IntSize size() const { return frameRect().size(); }
+    IntPoint pos() const { return frameRect().location(); }
+
+    virtual void setFrameRect(const IntRect&);
+    virtual IntRect frameRect() const;
+    IntRect boundsRect() const { return IntRect(0, 0, width(),  height()); }
+
+    void resize(int w, int h) { setFrameRect(IntRect(x(), y(), w, h)); }
+    void resize(const IntSize& s) { setFrameRect(IntRect(pos(), s)); }
+    void move(int x, int y) { setFrameRect(IntRect(x, y, width(), height())); }
+    void move(const IntPoint& p) { setFrameRect(IntRect(p, size())); }
+
+    virtual void paint(GraphicsContext*, const IntRect&);
+    void invalidate() { invalidateRect(boundsRect()); }
+    virtual void invalidateRect(const IntRect&) = 0;
+
+    virtual void setFocus(bool);
+
+    void setCursor(const Cursor&);
+
+    virtual void show();
+    virtual void hide();
+    bool isSelfVisible() const { return m_selfVisible; } // Whether or not we have been explicitly marked as visible or not.
+    bool isParentVisible() const { return m_parentVisible; } // Whether or not our parent is visible.
+    bool isVisible() const { return m_selfVisible && m_parentVisible; } // Whether or not we are actually visible.
+    virtual void setParentVisible(bool visible) { m_parentVisible = visible; }
+    void setSelfVisible(bool v) { m_selfVisible = v; }
+
+    void setIsSelected(bool);
+
+    virtual bool isFrameView() const { return false; }
+    virtual bool isPluginView() const { return false; }
+    // FIXME: The Mac plug-in code should inherit from PluginView. When this happens PluginViewBase and PluginView can become one class.
+    virtual bool isPluginViewBase() const { return false; }
+    virtual bool isScrollbar() const { return false; }
+
+    void removeFromParent();
+    virtual void setParent(ScrollView* view);
+    ScrollView* parent() const { return m_parent; }
+    ScrollView* root() const;
+
+    virtual void handleEvent(Event*) { }
+
+    virtual void notifyWidget(WidgetNotification) { }
+
+    // It is important for cross-platform code to realize that Mac has flipped coordinates.  Therefore any code
+    // that tries to convert the location of a rect using the point-based convertFromContainingWindow will end
+    // up with an inaccurate rect.  Always make sure to use the rect-based convertFromContainingWindow method
+    // when converting window rects.
+    IntRect convertToContainingWindow(const IntRect&) const;
+    IntRect convertFromContainingWindow(const IntRect&) const;
+
+    IntPoint convertToContainingWindow(const IntPoint&) const;
+    IntPoint convertFromContainingWindow(const IntPoint&) const;
+
+    virtual void frameRectsChanged();
+
+    // Notifies this widget that other widgets on the page have been repositioned.
+    virtual void widgetPositionsUpdated() {}
+
+#if PLATFORM(MAC)
+    NSView* getOuterView() const;
+
+    static void beforeMouseDown(NSView*, Widget*);
+    static void afterMouseDown(NSView*, Widget*);
+
+    void removeFromSuperview();
+#endif
+
+#if PLATFORM(EFL)
+    // FIXME: These should really go to PlatformWidget. They're here currently since
+    // the EFL port considers that Evas_Object (a C object) is a PlatformWidget, but
+    // encapsulating that into a C++ class will make this header clean as it should be.
+    Evas* evas() const;
+
+    void setEvasObject(Evas_Object*);
+    Evas_Object* evasObject() const;
+
+    const String edjeTheme() const;
+    void setEdjeTheme(const String &);
+    const String edjeThemeRecursive() const;
+#endif
+
+#if PLATFORM(CHROMIUM)
+    virtual bool isPluginContainer() const { return false; }
+#endif
+
+#if PLATFORM(QT)
+    QObject* bindingObject() const;
+    void setBindingObject(QObject*);
+#endif
+
+    // Virtual methods to convert points to/from the containing ScrollView
+    virtual IntRect convertToContainingView(const IntRect&) const;
+    virtual IntRect convertFromContainingView(const IntRect&) const;
+    virtual IntPoint convertToContainingView(const IntPoint&) const;
+    virtual IntPoint convertFromContainingView(const IntPoint&) const;
+
+    // A means to access the AX cache when this object can get a pointer to it.
+    virtual AXObjectCache* axObjectCache() const { return 0; }
+    
+private:
+    void init(PlatformWidget); // Must be called by all Widget constructors to initialize cross-platform data.
+
+    void releasePlatformWidget();
+    void retainPlatformWidget();
+
+    // These methods are used to convert from the root widget to the containing window,
+    // which has behavior that may differ between platforms (e.g. Mac uses flipped window coordinates).
+    static IntRect convertFromRootToContainingWindow(const Widget* rootWidget, const IntRect&);
+    static IntRect convertFromContainingWindowToRoot(const Widget* rootWidget, const IntRect&);
+
+    static IntPoint convertFromRootToContainingWindow(const Widget* rootWidget, const IntPoint&);
+    static IntPoint convertFromContainingWindowToRoot(const Widget* rootWidget, const IntPoint&);
+
+private:
+    ScrollView* m_parent;
+#if !PLATFORM(MAC)
+    PlatformWidget m_widget;
+#else
+    RetainPtr<NSView> m_widget;
+#endif
+    bool m_selfVisible;
+    bool m_parentVisible;
+
+    IntRect m_frame; // Not used when a native widget exists.
+
+#if PLATFORM(EFL)
+    // FIXME: Please see the previous #if PLATFORM(EFL) block.
+    Ecore_Evas* ecoreEvas() const;
+
+    void applyFallbackCursor();
+    void applyCursor();
+#endif
+
+#if PLATFORM(MAC) || PLATFORM(EFL)
+    WidgetPrivate* m_data;
+#endif
+
+#if PLATFORM(QT)
+    QWeakPointer<QObject> m_bindingObject;
+#endif
+
+#if PLATFORM(HAIKU)
+    PlatformWidget m_topLevelPlatformWidget;
+#endif
+#if PLATFORM(ANDROID)
+public:
+    int textWrapWidth() const;
+#endif
+};
+
+#if !PLATFORM(MAC)
+
+inline PlatformWidget Widget::platformWidget() const
+{
+    return m_widget;
+}
+
+inline void Widget::setPlatformWidget(PlatformWidget widget)
+{
+    if (widget != m_widget) {
+        releasePlatformWidget();
+        m_widget = widget;
+        retainPlatformWidget();
+    }
+}
+
+#endif
+
+#if !PLATFORM(GTK) && !PLATFORM(ANDROID)
+
+inline void Widget::releasePlatformWidget()
+{
+}
+
+inline void Widget::retainPlatformWidget()
+{
+}
+
+#endif
+
+} // namespace WebCore
+
+#endif // Widget_h