text: // Copyright (c) 2014 GitHub, Inc.
  // Use of this source code is governed by the MIT license that can be
  // found in the LICENSE file.
  
  #ifndef ATOM_BROWSER_NATIVE_WINDOW_VIEWS_H_
  #define ATOM_BROWSER_NATIVE_WINDOW_VIEWS_H_
  
  #include "atom/browser/native_window.h"
  
  #include <set>
  #include <string>
  #include <vector>
  
  #include "atom/browser/ui/accelerator_util.h"
  #include "atom/browser/ui/autofill_popup.h"
  #include "ui/views/widget/widget_delegate.h"
  #include "ui/views/widget/widget_observer.h"
  
  #if defined(OS_WIN)
  #include "atom/browser/ui/win/message_handler_delegate.h"
  #include "atom/browser/ui/win/taskbar_host.h"
  #include "base/win/scoped_gdi_object.h"
  #include "ui/base/win/accessibility_misc_utils.h"
  #include <UIAutomationCoreApi.h>
  #endif
  
  namespace views {
  class UnhandledKeyboardEventHandler;
  }
  
  namespace atom {
  
  class GlobalMenuBarX11;
  class MenuBar;
  class WindowStateWatcher;
  
  #if defined(OS_WIN)
  class AtomDesktopWindowTreeHostWin;
  #elif defined(USE_X11)
  class EventDisabler;
  #endif
  
  class NativeWindowViews : public NativeWindow,
  #if defined(OS_WIN)
                            public MessageHandlerDelegate,
  #endif
                            public views::WidgetDelegateView,
                            public views::WidgetObserver {
   public:
    NativeWindowViews(brightray::InspectableWebContents* inspectable_web_contents,
                      const mate::Dictionary& options,
                      NativeWindow* parent);
    ~NativeWindowViews() override;
  
    // NativeWindow:
    void Close() override;
    void CloseImmediately() override;
    void Focus(bool focus) override;
    bool IsFocused() override;
    void Show() override;
    void ShowInactive() override;
    void Hide() override;
    bool IsVisible() override;
    bool IsEnabled() override;
    void Maximize() override;
    void Unmaximize() override;
    bool IsMaximized() override;
    void Minimize() override;
    void Restore() override;
    bool IsMinimized() override;
    void SetFullScreen(bool fullscreen) override;
    bool IsFullscreen() const override;
    void SetBounds(const gfx::Rect& bounds, bool animate) override;
    gfx::Rect GetBounds() override;
    gfx::Rect GetContentBounds() override;
    gfx::Size GetContentSize() override;
    void SetContentSizeConstraints(
        const extensions::SizeConstraints& size_constraints) override;
    void SetResizable(bool resizable) override;
    bool IsResizable() override;
    void SetMovable(bool movable) override;
    bool IsMovable() override;
    void SetMinimizable(bool minimizable) override;
    bool IsMinimizable() override;
    void SetMaximizable(bool maximizable) override;
    bool IsMaximizable() override;
    void SetFullScreenable(bool fullscreenable) override;
    bool IsFullScreenable() override;
    void SetClosable(bool closable) override;
    bool IsClosable() override;
    void SetAlwaysOnTop(bool top, const std::string& level,
                        int relativeLevel, std::string* error) override;
    bool IsAlwaysOnTop() override;
    void Center() override;
    void Invalidate() override;
    void SetTitle(const std::string& title) override;
    std::string GetTitle() override;
    void FlashFrame(bool flash) override;
    void SetSkipTaskbar(bool skip) override;
    void SetSimpleFullScreen(bool simple_fullscreen) override;
    bool IsSimpleFullScreen() override;
    void SetKiosk(bool kiosk) override;
    bool IsKiosk() override;
    void SetBackgroundColor(const std::string& color_name) override;
    void SetHasShadow(bool has_shadow) override;
    bool HasShadow() override;
    void SetOpacity(const double opacity) override;
    double GetOpacity() override;
    void SetIgnoreMouseEvents(bool ignore, bool forward) override;
    void SetContentProtection(bool enable) override;
    void SetFocusable(bool focusable) override;
    void SetMenu(AtomMenuModel* menu_model) override;
    void SetBrowserView(NativeBrowserView* browser_view) override;
    void SetParentWindow(NativeWindow* parent) override;
    gfx::NativeView GetNativeView() const override;
    gfx::NativeWindow GetNativeWindow() const override;
    void SetOverlayIcon(const gfx::Image& overlay,
                        const std::string& description) override;
    void SetProgressBar(double progress, const ProgressState state) override;
    void SetAutoHideMenuBar(bool auto_hide) override;
    bool IsMenuBarAutoHide() override;
    void SetMenuBarVisibility(bool visible) override;
    bool IsMenuBarVisible() override;
    void SetVisibleOnAllWorkspaces(bool visible) override;
    bool IsVisibleOnAllWorkspaces() override;
  
    gfx::AcceleratedWidget GetAcceleratedWidget() const override;
  
  #if defined(OS_WIN)
    void SetIcon(HICON small_icon, HICON app_icon);
  #elif defined(USE_X11)
    void SetIcon(const gfx::ImageSkia& icon);
  #endif
  
    void SetEnabled(bool enable);
  
    views::Widget* widget() const { return window_.get(); }
  
  #if defined(OS_WIN)
    TaskbarHost& taskbar_host() { return taskbar_host_; }
  #endif
  
   private:
    // views::WidgetObserver:
    void OnWidgetActivationChanged(
        views::Widget* widget, bool active) override;
    void OnWidgetBoundsChanged(
        views::Widget* widget, const gfx::Rect& bounds) override;
  
    // views::WidgetDelegate:
    void DeleteDelegate() override;
    views::View* GetInitiallyFocusedView() override;
    bool CanResize() const override;
    bool CanMaximize() const override;
    bool CanMinimize() const override;
    base::string16 GetWindowTitle() const override;
    bool ShouldHandleSystemCommands() const override;
    views::Widget* GetWidget() override;
    const views::Widget* GetWidget() const override;
    views::View* GetContentsView() override;
    bool ShouldDescendIntoChildForEventHandling(
       gfx::NativeView child,
       const gfx::Point& location) override;
    views::ClientView* CreateClientView(views::Widget* widget) override;
    views::NonClientFrameView* CreateNonClientFrameView(
        views::Widget* widget) override;
    void OnWidgetMove() override;
  #if defined(OS_WIN)
    bool ExecuteWindowsCommand(int command_id) override;
  #endif
  
  #if defined(OS_WIN)
    // MessageHandlerDelegate:
    bool PreHandleMSG(
        UINT message, WPARAM w_param, LPARAM l_param, LRESULT* result) override;
    void HandleSizeEvent(WPARAM w_param, LPARAM l_param);
    void SetForwardMouseMessages(bool forward);
    static LRESULT CALLBACK SubclassProc(
        HWND hwnd, UINT msg, WPARAM w_param, LPARAM l_param, UINT_PTR subclass_id,
        DWORD_PTR ref_data);
    static LRESULT CALLBACK MouseHookProc(
        int n_code, WPARAM w_param, LPARAM l_param);
  #endif
  
    // NativeWindow:
    gfx::Rect ContentBoundsToWindowBounds(const gfx::Rect& bounds) const override;
    gfx::Rect WindowBoundsToContentBounds(const gfx::Rect& bounds) const override;
    void HandleKeyboardEvent(
        content::WebContents*,
        const content::NativeWebKeyboardEvent& event) override;
    void ShowAutofillPopup(
      content::RenderFrameHost* frame_host,
      const gfx::RectF& bounds,
      const std::vector<base::string16>& values,
      const std::vector<base::string16>& labels) override;
    void HideAutofillPopup(content::RenderFrameHost* frame_host) override;
  
    // views::View:
    void Layout() override;
    gfx::Size GetMinimumSize() const override;
    gfx::Size GetMaximumSize() const override;
    bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
  
    // Register accelerators supported by the menu model.
    void RegisterAccelerators(AtomMenuModel* menu_model);
  
    // Returns the restore state for the window.
    ui::WindowShowState GetRestoredState();
  
    std::unique_ptr<views::Widget> window_;
    views::View* web_view_;  // Managed by inspectable_web_contents_.
  
    NativeBrowserView* browser_view_;
  
    std::unique_ptr<AutofillPopup> autofill_popup_;
  
    std::unique_ptr<MenuBar> menu_bar_;
    bool menu_bar_autohide_;
    bool menu_bar_visible_;
    bool menu_bar_alt_pressed_;
  
  #if defined(USE_X11)
    std::unique_ptr<GlobalMenuBarX11> global_menu_bar_;
  
    // Handles window state events.
    std::unique_ptr<WindowStateWatcher> window_state_watcher_;
  
    // To disable the mouse events.
    std::unique_ptr<EventDisabler> event_disabler_;
  
    // The "resizable" flag on Linux is implemented by setting size constraints,
    // we need to make sure size constraints are restored when window becomes
    // resizable again.
    extensions::SizeConstraints old_size_constraints_;
  #elif defined(OS_WIN)
    // Weak ref.
    AtomDesktopWindowTreeHostWin* atom_desktop_window_tree_host_win_;
  
    ui::WindowShowState last_window_state_;
  
    // There's an issue with restore on Windows, that sometimes causes the Window
    // to receive the wrong size (#2498). To circumvent that, we keep tabs on the
    // size of the window while in the normal state (not maximized, minimized or
    // fullscreen), so we restore it correctly.
    gfx::Rect last_normal_bounds_;
    gfx::Rect last_normal_bounds_before_move_;
  
    // last_normal_bounds_ may or may not require update on WM_MOVE. When a
    // window is maximized, it is moved (WM_MOVE) to maximum size first and then
    // sized (WM_SIZE). In this case, last_normal_bounds_ should not update. We
    // keep last_normal_bounds_candidate_ as a candidate which will become valid
    // last_normal_bounds_ if the moves are consecutive with no WM_SIZE event in
    // between.
    gfx::Rect last_normal_bounds_candidate_;
  
    bool consecutive_moves_;
  
    // In charge of running taskbar related APIs.
    TaskbarHost taskbar_host_;
  
    // Memoized version of a11y check
    bool checked_for_a11y_support_;
  
    // Whether to show the WS_THICKFRAME style.
    bool thick_frame_;
  
    // The bounds of window before maximize/fullscreen.
    gfx::Rect restore_bounds_;
  
    // The icons of window and taskbar.
    base::win::ScopedHICON window_icon_;
    base::win::ScopedHICON app_icon_;
  
    // The set of windows currently forwarding mouse messages.
    static std::set<NativeWindowViews*> forwarding_windows_;
    static HHOOK mouse_hook_;
    bool forwarding_mouse_messages_ = false;
    HWND legacy_window_ = NULL;
    bool layered_ = false;
  #endif
  
    // Handles unhandled keyboard messages coming back from the renderer process.
    std::unique_ptr<views::UnhandledKeyboardEventHandler> keyboard_event_handler_;
  
    // Map from accelerator to menu item's command id.
    accelerator_util::AcceleratorTable accelerator_table_;
  
    // How many times the Disable has been called.
    int disable_count_;
  
    bool use_content_size_;
    bool movable_;
    bool resizable_;
    bool maximizable_;
    bool minimizable_;
    bool fullscreenable_;
    std::string title_;
    gfx::Size widget_size_;
    double opacity_ = 1.0;
  
    DISALLOW_COPY_AND_ASSIGN(NativeWindowViews);
  };
  
  }  // namespace atom
  
  #endif  // ATOM_BROWSER_NATIVE_WINDOW_VIEWS_H_
  