// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.

#ifndef ATOM_BROWSER_API_ATOM_API_BROWSER_WINDOW_H_
#define ATOM_BROWSER_API_ATOM_API_BROWSER_WINDOW_H_

#include <string>
#include <vector>

#include "atom/browser/api/atom_api_top_level_window.h"
#include "atom/browser/api/atom_api_web_contents.h"
#include "base/cancelable_callback.h"

namespace atom {

namespace api {

class BrowserWindow : public TopLevelWindow,
                      public content::RenderWidgetHost::InputEventObserver,
                      public content::WebContentsObserver,
                      public ExtendedWebContentsObserver {
 public:
  static mate::WrappableBase* New(mate::Arguments* args);

  static void BuildPrototype(v8::Isolate* isolate,
                             v8::Local<v8::FunctionTemplate> prototype);

  // Returns the BrowserWindow object from |native_window|.
  static v8::Local<v8::Value> From(v8::Isolate* isolate,
                                   NativeWindow* native_window);

  base::WeakPtr<BrowserWindow> GetWeakPtr() {
    return weak_factory_.GetWeakPtr();
  }

 protected:
  BrowserWindow(v8::Isolate* isolate,
                v8::Local<v8::Object> wrapper,
                const mate::Dictionary& options);
  ~BrowserWindow() override;

  // content::RenderWidgetHost::InputEventObserver:
  void OnInputEvent(const blink::WebInputEvent& event) override;

  // content::WebContentsObserver:
  void RenderViewHostChanged(content::RenderViewHost* old_host,
                             content::RenderViewHost* new_host) override;
  void RenderViewCreated(content::RenderViewHost* render_view_host) override;
  void DidFirstVisuallyNonEmptyPaint() override;
  void BeforeUnloadDialogCancelled() override;
  void OnRendererUnresponsive(content::RenderWidgetHost*) override;
  bool OnMessageReceived(const IPC::Message& message,
                         content::RenderFrameHost* rfh) override;

  // ExtendedWebContentsObserver:
  void OnCloseContents() override;
  void OnRendererResponsive() override;

  // NativeWindowObserver:
  void RequestPreferredWidth(int* width) override;
  void OnCloseButtonClicked(bool* prevent_default) override;

  // TopLevelWindow:
  void OnWindowClosed() override;
  void OnWindowBlur() override;
  void OnWindowFocus() override;
  void OnWindowResize() override;
  void Focus() override;
  void Blur() override;
  void SetBackgroundColor(const std::string& color_name) override;
  void SetBrowserView(v8::Local<v8::Value> value) override;
  void SetVibrancy(mate::Arguments* args) override;

  // BrowserWindow APIs.
  void FocusOnWebView();
  void BlurWebView();
  bool IsWebViewFocused();
  v8::Local<v8::Value> GetWebContents(v8::Isolate* isolate);

 private:
  // Helpers.

  // Called when the window needs to update its draggable region.
  void UpdateDraggableRegions(content::RenderFrameHost* rfh,
                              const std::vector<DraggableRegion>& regions);

  // Convert draggable regions in raw format to SkRegion format.
  std::unique_ptr<SkRegion> DraggableRegionsToSkRegion(
      const std::vector<DraggableRegion>& regions);

  // Schedule a notification unresponsive event.
  void ScheduleUnresponsiveEvent(int ms);

  // Dispatch unresponsive event to observers.
  void NotifyWindowUnresponsive();

  // Cleanup our WebContents observers.
  void Cleanup();

  // Closure that would be called when window is unresponsive when closing,
  // it should be cancelled when we can prove that the window is responsive.
  base::CancelableClosure window_unresponsive_closure_;

#if defined(OS_MACOSX)
  std::vector<DraggableRegion> draggable_regions_;
#endif

  v8::Global<v8::Value> web_contents_;
  api::WebContents* api_web_contents_;

  base::WeakPtrFactory<BrowserWindow> weak_factory_;

  DISALLOW_COPY_AND_ASSIGN(BrowserWindow);
};

}  // namespace api

}  // namespace atom

#endif  // ATOM_BROWSER_API_ATOM_API_BROWSER_WINDOW_H_