// Copyright (c) 2012 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_UI_GTK_EXTENSIONS_NATIVE_APP_WINDOW_GTK_H_
#define CHROME_BROWSER_UI_GTK_EXTENSIONS_NATIVE_APP_WINDOW_GTK_H_

#include <gtk/gtk.h>

#include "base/timer.h"
#include "chrome/browser/ui/extensions/native_app_window.h"
#include "chrome/browser/ui/extensions/shell_window.h"
#include "chrome/browser/ui/gtk/extensions/extension_view_gtk.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "ui/base/gtk/gtk_signal.h"
#include "ui/base/x/active_window_watcher_x_observer.h"
#include "ui/gfx/rect.h"

class ExtensionKeybindingRegistryGtk;
class Profile;

namespace extensions {
class Extension;
}

class NativeAppWindowGtk : public NativeAppWindow,
                           public ExtensionViewGtk::Container,
                           public ui::ActiveWindowWatcherXObserver {
 public:
  NativeAppWindowGtk(ShellWindow* shell_window,
                     const ShellWindow::CreateParams& params);

  // BaseWindow implementation.
  virtual bool IsActive() const OVERRIDE;
  virtual bool IsMaximized() const OVERRIDE;
  virtual bool IsMinimized() const OVERRIDE;
  virtual bool IsFullscreen() const OVERRIDE;
  virtual gfx::NativeWindow GetNativeWindow() OVERRIDE;
  virtual gfx::Rect GetRestoredBounds() const OVERRIDE;
  virtual gfx::Rect GetBounds() const OVERRIDE;
  virtual void Show() OVERRIDE;
  virtual void ShowInactive() OVERRIDE;
  virtual void Hide() OVERRIDE;
  virtual void Close() OVERRIDE;
  virtual void Activate() OVERRIDE;
  virtual void Deactivate() OVERRIDE;
  virtual void Maximize() OVERRIDE;
  virtual void Minimize() OVERRIDE;
  virtual void Restore() OVERRIDE;
  virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
  virtual void FlashFrame(bool flash) OVERRIDE;
  virtual bool IsAlwaysOnTop() const OVERRIDE;

  // ActiveWindowWatcherXObserver implementation.
  virtual void ActiveWindowChanged(GdkWindow* active_window) OVERRIDE;

 private:
  // NativeAppWindow implementation.
  virtual void SetFullscreen(bool fullscreen) OVERRIDE;
  virtual bool IsFullscreenOrPending() const OVERRIDE;
  virtual void UpdateWindowIcon() OVERRIDE;
  virtual void UpdateWindowTitle() OVERRIDE;
  virtual void HandleKeyboardEvent(
      const content::NativeWebKeyboardEvent& event) OVERRIDE;
  virtual void UpdateDraggableRegions(
      const std::vector<extensions::DraggableRegion>& regions) OVERRIDE;
  virtual void RenderViewHostChanged() OVERRIDE;
  virtual gfx::Insets GetFrameInsets() const OVERRIDE;

  content::WebContents* web_contents() const {
    return shell_window_->web_contents();
  }
  const extensions::Extension* extension() const {
    return shell_window_->extension();
  }

  virtual ~NativeAppWindowGtk();

  // If the point (|x|, |y|) is within the resize border area of the window,
  // returns true and sets |edge| to the appropriate GdkWindowEdge value.
  // Otherwise, returns false.
  bool GetWindowEdge(int x, int y, GdkWindowEdge* edge);

  CHROMEGTK_CALLBACK_1(NativeAppWindowGtk, gboolean, OnMainWindowDeleteEvent,
                       GdkEvent*);
  CHROMEGTK_CALLBACK_1(NativeAppWindowGtk, gboolean, OnConfigure,
                       GdkEventConfigure*);
  CHROMEGTK_CALLBACK_1(NativeAppWindowGtk, gboolean, OnWindowState,
                       GdkEventWindowState*);
  CHROMEGTK_CALLBACK_1(NativeAppWindowGtk, gboolean, OnMouseMoveEvent,
                       GdkEventMotion*);
  CHROMEGTK_CALLBACK_1(NativeAppWindowGtk, gboolean, OnButtonPress,
                       GdkEventButton*);

  void OnDebouncedBoundsChanged();

  ShellWindow* shell_window_;  // weak - ShellWindow owns NativeAppWindow.

  GtkWindow* window_;
  GdkWindowState state_;

  // True if the window manager thinks the window is active.  Not all window
  // managers keep track of this state (_NET_ACTIVE_WINDOW), in which case
  // this will always be true.
  bool is_active_;

  // The position and size of the current window.
  gfx::Rect bounds_;

  // The position and size of the non-maximized, non-fullscreen window.
  gfx::Rect restored_bounds_;

  // True if the RVH is in fullscreen mode. The window may not actually be in
  // fullscreen, however: some WMs don't support fullscreen.
  bool content_thinks_its_fullscreen_;

  // The region is treated as title bar, can be dragged to move
  // and double clicked to maximize.
  scoped_ptr<SkRegion> draggable_region_;

  // If true, don't call gdk_window_raise() when we get a click in the title
  // bar or window border.  This is to work around a compiz bug.
  bool suppress_window_raise_;

  // True if the window shows without frame.
  bool frameless_;

  // The current window cursor.  We set it to a resize cursor when over the
  // custom frame border.  We set it to NULL if we want the default cursor.
  GdkCursor* frame_cursor_;

  // The timer used to save the window position for session restore.
  base::OneShotTimer<NativeAppWindowGtk> window_configure_debounce_timer_;

  // The Extension Keybinding Registry responsible for registering listeners for
  // accelerators that are sent to the window, that are destined to be turned
  // into events and sent to the extension.
  scoped_ptr<ExtensionKeybindingRegistryGtk> extension_keybinding_registry_;

  DISALLOW_COPY_AND_ASSIGN(NativeAppWindowGtk);
};

#endif  // CHROME_BROWSER_UI_GTK_EXTENSIONS_NATIVE_APP_WINDOW_GTK_H_