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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef VIEWS_WIDGET_NATIVE_WIDGET_H_
#define VIEWS_WIDGET_NATIVE_WIDGET_H_
#pragma once
#include <set>
#include "ui/gfx/native_widget_types.h"
namespace gfx {
class Rect;
}
namespace ui {
class OSExchangeData;
}
namespace views {
class TooltipManager;
class Widget;
////////////////////////////////////////////////////////////////////////////////
// NativeWidget interface
//
// An interface implemented by an object that encapsulates rendering, event
// handling and widget management provided by an underlying native toolkit.
//
class NativeWidget {
public:
typedef std::set<NativeWidget*> NativeWidgets;
virtual ~NativeWidget() {}
// Retrieves the NativeWidget implementation associated with the given
// NativeView or Window, or NULL if the supplied handle has no associated
// NativeView.
static NativeWidget* GetNativeWidgetForNativeView(
gfx::NativeView native_view);
static NativeWidget* GetNativeWidgetForNativeWindow(
gfx::NativeWindow native_window);
// Retrieves the top NativeWidget in the hierarchy containing the given
// NativeView, or NULL if there is no NativeWidget that contains it.
static NativeWidget* GetTopLevelNativeWidget(gfx::NativeView native_view);
// Returns all NativeWidgets in |native_view|'s hierarchy, including itself if
// it is one.
static void GetAllNativeWidgets(gfx::NativeView native_view,
NativeWidgets* children);
// Returns the Widget associated with this NativeWidget. This function is
// guaranteed to return non-NULL for the lifetime of the NativeWidget.
virtual Widget* GetWidget() = 0;
// Sets/Gets a native window property on the underlying native window object.
// Returns NULL if the property does not exist. Setting the property value to
// NULL removes the property.
virtual void SetNativeWindowProperty(const char* name, void* value) = 0;
virtual void* GetNativeWindowProperty(const char* name) = 0;
// Returns the native widget's tooltip manager. Called from the View hierarchy
// to update tooltips.
virtual TooltipManager* GetTooltipManager() const = 0;
// Returns true if a system screen reader is active for the NativeWidget.
virtual bool IsScreenReaderActive() const = 0;
// Sets or releases event capturing for this native widget.
virtual void SetMouseCapture() = 0;
virtual void ReleaseMouseCapture() = 0;
// Returns true if this native widget is capturing all events.
virtual bool HasMouseCapture() const = 0;
protected:
friend class Widget;
// Returns a handle for the underlying native widget that can be used for
// accelerated drawing.
virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0;
// Widget pass-thrus, private to Views. --------------------------------------
// See method documentation in Widget.
virtual gfx::Rect GetWindowScreenBounds() const = 0;
virtual gfx::Rect GetClientAreaScreenBounds() const = 0;
virtual void SetBounds(const gfx::Rect& bounds) = 0;
virtual void MoveAbove(gfx::NativeView native_view) = 0;
virtual void SetShape(gfx::NativeRegion shape) = 0;
virtual void Close() = 0;
virtual void CloseNow() = 0;
virtual void Show() = 0;
virtual void Hide() = 0;
virtual void SetOpacity(unsigned char opacity) = 0;
virtual void SetAlwaysOnTop(bool on_top) = 0;
virtual bool IsVisible() const = 0;
virtual bool IsActive() const = 0;
virtual bool IsAccessibleWidget() const = 0;
virtual bool ContainsNativeView(gfx::NativeView native_view) const = 0;
virtual void RunShellDrag(View* view,
const ui::OSExchangeData& data,
int operation) = 0;
virtual void SchedulePaintInRect(const gfx::Rect& rect) = 0;
virtual void SetCursor(gfx::NativeCursor cursor) = 0;
};
} // namespace views
#endif // VIEWS_WIDGET_NATIVE_WIDGET_H_
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