public:

///

/// Called when |window| is created.

///

/*--cef()--*/

virtual void OnWindowCreated(CefRefPtr<CefWindow> window) {}

///

/// Called when |window| is closing.

///

/*--cef()--*/

virtual void OnWindowClosing(CefRefPtr<CefWindow> window) {}

///

/// Called when |window| is destroyed. Release all references to |window| and

/// do not attempt to execute any methods on |window| after this callback

/// returns.

///

/*--cef()--*/

virtual void OnWindowDestroyed(CefRefPtr<CefWindow> window) {}

///

/// Called when |window| is activated or deactivated.

///

/*--cef()--*/

virtual void OnWindowActivationChanged(CefRefPtr<CefWindow> window,

bool active) {}

///

/// Called when |window| bounds have changed. |new_bounds| will be in DIP

/// screen coordinates.

///

/*--cef()--*/

virtual void OnWindowBoundsChanged(CefRefPtr<CefWindow> window,

const CefRect& new_bounds) {}

///

/// Called when |window| is transitioning to or from fullscreen mode. On MacOS

/// the transition occurs asynchronously with |is_competed| set to false when

/// the transition starts and true after the transition completes. On other

/// platforms the transition occurs synchronously with |is_completed| set to

/// true after the transition completes. With the Alloy runtime you must also

/// implement CefDisplayHandler::OnFullscreenModeChange to handle fullscreen

/// transitions initiated by browser content.

///

/*--cef()--*/

virtual void OnWindowFullscreenTransition(CefRefPtr<CefWindow> window,

bool is_completed) {}

///

/// Return the parent for |window| or NULL if the |window| does not have a

/// parent. Windows with parents will not get a taskbar button. Set |is_menu|

/// to true if |window| will be displayed as a menu, in which case it will not

/// be clipped to the parent window bounds. Set |can_activate_menu| to false

/// if |is_menu| is true and |window| should not be activated (given keyboard

/// focus) when displayed.

///

/*--cef()--*/

virtual CefRefPtr<CefWindow> GetParentWindow(CefRefPtr<CefWindow> window,

bool* is_menu,

bool* can_activate_menu) {

return nullptr;

}

///

/// Return true if |window| should be created as a window modal dialog. Only

/// called when a Window is returned via GetParentWindow() with |is_menu| set

/// to false. All controls in the parent Window will be disabled while

/// |window| is visible. This functionality is not supported by all Linux

/// window managers. Alternately, use CefWindow::ShowAsBrowserModalDialog()

/// for a browser modal dialog that works on all platforms.

///

/*--cef()--*/

virtual bool IsWindowModalDialog(CefRefPtr<CefWindow> window) {

return false;

}

///

/// Return the initial bounds for |window| in density independent pixel (DIP)

/// coordinates. If this method returns an empty CefRect then

/// GetPreferredSize() will be called to retrieve the size, and the window

/// will be placed on the screen with origin (0,0). This method can be used in

/// combination with CefView::GetBoundsInScreen() to restore the previous

/// window bounds.

///

/*--cef()--*/

virtual CefRect GetInitialBounds(CefRefPtr<CefWindow> window) {

return CefRect();

}

///

/// Return the initial show state for |window|.

///

/*--cef(default_retval=CEF_SHOW_STATE_NORMAL)--*/

virtual cef_show_state_t GetInitialShowState(CefRefPtr<CefWindow> window) {

return CEF_SHOW_STATE_NORMAL;

}

///

/// Return true if |window| should be created without a frame or title bar.

/// The window will be resizable if CanResize() returns true. Use

/// CefWindow::SetDraggableRegions() to specify draggable regions.

///

/*--cef()--*/

virtual bool IsFrameless(CefRefPtr<CefWindow> window) { return false; }

///

/// Return true if |window| should be created with standard window buttons

/// like close, minimize and zoom. This method is only supported on macOS.

///

/*--cef()--*/

virtual bool WithStandardWindowButtons(CefRefPtr<CefWindow> window) {

return !IsFrameless(window);

}

///

/// Return whether the titlebar height should be overridden, and sets the

/// height of the titlebar in |titlebar_height|. On macOS, it can also be used

/// to adjust the vertical position of the traffic light buttons in frameless

/// windows. The buttons will be positioned halfway down the titlebar at a

/// height of |titlebar_height| / 2.

///

/*--cef()--*/

virtual bool GetTitlebarHeight(CefRefPtr<CefWindow> window,

float* titlebar_height) {

return false;

}

///

/// Return whether the view should accept the initial mouse-down event,

/// allowing it to respond to click-through behavior. If STATE_ENABLED is

/// returned, the view will be sent a mouseDown: message for an initial

/// mouse-down event, activating the view with one click, instead of clicking

/// first to make the window active and then clicking the view.

///

/// This method is only supported on macOS. For more details, refer to the

/// documentation of acceptsFirstMouse.

///

/*--cef(default_retval=STATE_DEFAULT)--*/

virtual cef_state_t AcceptsFirstMouse(CefRefPtr<CefWindow> window) {

return STATE_DEFAULT;

}

///

/// Return true if |window| can be resized.

///

/*--cef()--*/

virtual bool CanResize(CefRefPtr<CefWindow> window) { return true; }

///

/// Return true if |window| can be maximized.

///

/*--cef()--*/

virtual bool CanMaximize(CefRefPtr<CefWindow> window) { return true; }

///

/// Return true if |window| can be minimized.

///

/*--cef()--*/

virtual bool CanMinimize(CefRefPtr<CefWindow> window) { return true; }

///

/// Return true if |window| can be closed. This will be called for user-

/// initiated window close actions and when CefWindow::Close() is called.

///

/*--cef()--*/

virtual bool CanClose(CefRefPtr<CefWindow> window) { return true; }

///

/// Called when a keyboard accelerator registered with

/// CefWindow::SetAccelerator is triggered. Return true if the accelerator was

/// handled or false otherwise.

///

/*--cef()--*/

virtual bool OnAccelerator(CefRefPtr<CefWindow> window, int command_id) {

return false;

}

///

/// Called after all other controls in the window have had a chance to

/// handle the event. |event| contains information about the keyboard event.

/// Return true if the keyboard event was handled or false otherwise.

///

/*--cef()--*/

virtual bool OnKeyEvent(CefRefPtr<CefWindow> window,

const CefKeyEvent& event) {

return false;

}

///

/// Called after the native/OS or Chrome theme for |window| has changed.

/// |chrome_theme| will be true if the notification is for a Chrome theme.

///

/// Native/OS theme colors are configured globally and do not need to be

/// customized for each Window individually. An example of a native/OS theme

/// change that triggers this callback is when the user switches between dark

/// and light mode during application lifespan. Native/OS theme changes can be

/// disabled by passing the `--force-dark-mode` or `--force-light-mode`

/// command-line flag.

///

/// Chrome theme colors will be applied and this callback will be triggered

/// if/when a BrowserView is added to the Window's component hierarchy. Chrome

/// theme colors can be configured on a per-RequestContext basis using

/// CefRequestContext::SetChromeColorScheme or (Chrome runtime only) by

/// visiting chrome://settings/manageProfile. Any theme changes using those

/// mechanisms will also trigger this callback. Chrome theme colors will be

/// persisted and restored from disk cache with the Chrome runtime, and with

/// the Alloy runtime if persist_user_preferences is set to true via

/// CefSettings or CefRequestContextSettings.

///

/// This callback is not triggered on Window creation so clients that wish to

/// customize the initial native/OS theme must call CefWindow::SetThemeColor

/// and CefWindow::ThemeChanged before showing the first Window.

///

/// Theme colors will be reset to standard values before this callback is

/// called for the first affected Window. Call CefWindow::SetThemeColor from

/// inside this callback to override a standard color or add a custom color.

/// CefViewDelegate::OnThemeChanged will be called after this callback for the

/// complete |window| component hierarchy.

///

/*--cef()--*/

virtual void OnThemeColorsChanged(CefRefPtr<CefWindow> window,

bool chrome_theme) {}

///

/// Optionally change the runtime style for this Window. See

/// cef_runtime_style_t documentation for details.

///

/*--cef(default_retval=CEF_RUNTIME_STYLE_DEFAULT)--*/

virtual cef_runtime_style_t GetWindowRuntimeStyle() {

return CEF_RUNTIME_STYLE_DEFAULT;

}