public:

typedef cef_window_open_disposition_t WindowOpenDisposition;

///

// Called on the UI thread before a new popup browser is created. The

// |browser| and |frame| values represent the source of the popup request. The

// |target_url| and |target_frame_name| values indicate where the popup

// browser should navigate and may be empty if not specified with the request.

// The |target_disposition| value indicates where the user intended to open

// the popup (e.g. current tab, new tab, etc). The |user_gesture| value will

// be true if the popup was opened via explicit user gesture (e.g. clicking a

// link) or false if the popup opened automatically (e.g. via the

// DomContentLoaded event). The |popupFeatures| structure contains additional

// information about the requested popup window. To allow creation of the

// popup browser optionally modify |windowInfo|, |client|, |settings| and

// |no_javascript_access| and return false. To cancel creation of the popup

// browser return true. The |client| and |settings| values will default to the

// source browser's values. If the |no_javascript_access| value is set to

// false the new browser will not be scriptable and may not be hosted in the

// same renderer process as the source browser. Any modifications to

// |windowInfo| will be ignored if the parent browser is wrapped in a

// CefBrowserView. Popup browser creation will be canceled if the parent

// browser is destroyed before the popup browser creation completes (indicated

// by a call to OnAfterCreated for the popup browser).

///

/*--cef(optional_param=target_url,optional_param=target_frame_name)--*/

virtual bool OnBeforePopup(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

const CefString& target_url,

const CefString& target_frame_name,

WindowOpenDisposition target_disposition,

bool user_gesture,

const CefPopupFeatures& popupFeatures,

CefWindowInfo& windowInfo,

CefRefPtr<CefClient>& client,

CefBrowserSettings& settings,

bool* no_javascript_access) {

return false;

}

///

// Called after a new browser is created. This callback will be the first

// notification that references |browser|.

///

/*--cef()--*/

virtual void OnAfterCreated(CefRefPtr<CefBrowser> browser) {}

///

// Called when a browser has recieved a request to close. This may result

// directly from a call to CefBrowserHost::*CloseBrowser() or indirectly if

// the browser is parented to a top-level window created by CEF and the user

// attempts to close that window (by clicking the 'X', for example). The

// DoClose() method will be called after the JavaScript 'onunload' event has

// been fired.

//

// An application should handle top-level owner window close notifications by

// calling CefBrowserHost::TryCloseBrowser() or

// CefBrowserHost::CloseBrowser(false) instead of allowing the window to close

// immediately (see the examples below). This gives CEF an opportunity to

// process the 'onbeforeunload' event and optionally cancel the close before

// DoClose() is called.

//

// When windowed rendering is enabled CEF will internally create a window or

// view to host the browser. In that case returning false from DoClose() will

// send the standard close notification to the browser's top-level owner

// window (e.g. WM_CLOSE on Windows, performClose: on OS X, "delete_event" on

// Linux or CefWindowDelegate::CanClose() callback from Views). If the

// browser's host window/view has already been destroyed (via view hierarchy

// tear-down, for example) then DoClose() will not be called for that browser

// since is no longer possible to cancel the close.

//

// When windowed rendering is disabled returning false from DoClose() will

// cause the browser object to be destroyed immediately.

//

// If the browser's top-level owner window requires a non-standard close

// notification then send that notification from DoClose() and return true.

//

// The CefLifeSpanHandler::OnBeforeClose() method will be called after

// DoClose() (if DoClose() is called) and immediately before the browser

// object is destroyed. The application should only exit after OnBeforeClose()

// has been called for all existing browsers.

//

// The below examples describe what should happen during window close when the

// browser is parented to an application-provided top-level window.

//

// Example 1: Using CefBrowserHost::TryCloseBrowser(). This is recommended for

// clients using standard close handling and windows created on the browser

// process UI thread.

// 1. User clicks the window close button which sends a close notification to

// the application's top-level window.

// 2. Application's top-level window receives the close notification and

// calls TryCloseBrowser() (which internally calls CloseBrowser(false)).

// TryCloseBrowser() returns false so the client cancels the window close.

// 3. JavaScript 'onbeforeunload' handler executes and shows the close

// confirmation dialog (which can be overridden via

// CefJSDialogHandler::OnBeforeUnloadDialog()).

// 4. User approves the close.

// 5. JavaScript 'onunload' handler executes.

// 6. CEF sends a close notification to the application's top-level window

// (because DoClose() returned false by default).

// 7. Application's top-level window receives the close notification and

// calls TryCloseBrowser(). TryCloseBrowser() returns true so the client

// allows the window close.

// 8. Application's top-level window is destroyed.

// 9. Application's OnBeforeClose() handler is called and the browser object

// is destroyed.

// 10. Application exits by calling CefQuitMessageLoop() if no other browsers

// exist.

//

// Example 2: Using CefBrowserHost::CloseBrowser(false) and implementing the

// DoClose() callback. This is recommended for clients using non-standard

// close handling or windows that were not created on the browser process UI

// thread.

// 1. User clicks the window close button which sends a close notification to

// the application's top-level window.

// 2. Application's top-level window receives the close notification and:

// A. Calls CefBrowserHost::CloseBrowser(false).

// B. Cancels the window close.

// 3. JavaScript 'onbeforeunload' handler executes and shows the close

// confirmation dialog (which can be overridden via

// CefJSDialogHandler::OnBeforeUnloadDialog()).

// 4. User approves the close.

// 5. JavaScript 'onunload' handler executes.

// 6. Application's DoClose() handler is called. Application will:

// A. Set a flag to indicate that the next close attempt will be allowed.

// B. Return false.

// 7. CEF sends an close notification to the application's top-level window.

// 8. Application's top-level window receives the close notification and

// allows the window to close based on the flag from #6B.

// 9. Application's top-level window is destroyed.

// 10. Application's OnBeforeClose() handler is called and the browser object

// is destroyed.

// 11. Application exits by calling CefQuitMessageLoop() if no other browsers

// exist.

///

/*--cef()--*/

virtual bool DoClose(CefRefPtr<CefBrowser> browser) { return false; }

///

// Called just before a browser is destroyed. Release all references to the

// browser object and do not attempt to execute any methods on the browser

// object after this callback returns. This callback will be the last

// notification that references |browser|. See DoClose() documentation for

// additional usage information.

///

/*--cef()--*/

virtual void OnBeforeClose(CefRefPtr<CefBrowser> browser) {}