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// Copyright (c) 2009 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 CHROME_BROWSER_GTK_TABS_TAB_GTK_H_
#define CHROME_BROWSER_GTK_TABS_TAB_GTK_H_
#include "base/basictypes.h"
#include "chrome/browser/gtk/tabs/tab_renderer_gtk.h"
#include "chrome/browser/tabs/tab_strip_model.h"
namespace gfx {
class Path;
}
class TabGtk : public TabRendererGtk {
public:
// An interface implemented by an object that can help this Tab complete
// various actions. The index parameter is the index of this Tab in the
// TabRenderer::Model.
class TabDelegate {
public:
// Returns true if the specified Tab is selected.
virtual bool IsTabSelected(const TabGtk* tab) const = 0;
// Selects the specified Tab.
virtual void SelectTab(TabGtk* tab) = 0;
// Closes the specified Tab.
virtual void CloseTab(TabGtk* tab) = 0;
// Returns true if the specified command is enabled for the specified Tab.
virtual bool IsCommandEnabledForTab(
TabStripModel::ContextMenuCommand command_id,
const TabGtk* tab) const = 0;
// Executes the specified command for the specified Tab.
virtual void ExecuteCommandForTab(
TabStripModel::ContextMenuCommand command_id, TabGtk* tab) = 0;
// Starts/Stops highlighting the tabs that will be affected by the
// specified command for the specified Tab.
virtual void StartHighlightTabsForCommand(
TabStripModel::ContextMenuCommand command_id, TabGtk* tab) = 0;
virtual void StopHighlightTabsForCommand(
TabStripModel::ContextMenuCommand command_id, TabGtk* tab) = 0;
virtual void StopAllHighlighting() = 0;
// Ends dragging a Tab. |canceled| is true if the drag was aborted in a way
// other than the user releasing the mouse. Returns whether the tab has been
// destroyed.
virtual bool EndDrag(bool canceled) = 0;
// Returns true if the associated TabStrip's delegate supports tab moving or
// detaching. Used by the Frame to determine if dragging on the Tab
// itself should move the window in cases where there's only one
// non drag-able Tab.
virtual bool HasAvailableDragActions() const = 0;
};
explicit TabGtk(TabDelegate* delegate);
virtual ~TabGtk();
// Access the delegate.
TabDelegate* delegate() const { return delegate_; }
// Used to set/check whether this Tab is being animated closed.
void set_closing(bool closing) { closing_ = closing; }
bool closing() const { return closing_; }
// Checks whether |point| is inside the bounds of the tab.
bool IsPointInBounds(const gfx::Point& point);
// TabRendererGtk overrides:
virtual bool IsSelected() const;
// Sent by the tabstrip when the mouse moves within this tab. Mouse is at
// |point|. Returns true if the tabstrip needs to be redrawn as a result
// of the motion.
bool OnMotionNotify(const gfx::Point& point);
// Sent by the tabstrip when the mouse clicks within this tab. Returns true
// if the tabstrip needs to be redrawn as a result of the click.
bool OnMousePress();
// Sent by the tabstrip when the mouse click is released.
void OnMouseRelease();
private:
// Creates a clickable region of the tab's visual representation. Used for
// hit-testing. Caller is responsible for destroying the region.
GdkRegion* MakeRegionForTab() const;
// An instance of a delegate object that can perform various actions based on
// user gestures.
TabDelegate* delegate_;
// True if the tab is being animated closed.
bool closing_;
// Set if the mouse is pressed anywhere inside the tab.
bool mouse_pressed_;
DISALLOW_COPY_AND_ASSIGN(TabGtk);
};
#endif // CHROME_BROWSER_GTK_TABS_TAB_GTK_H_
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