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#ifndef CEF_INCLUDE_CAPI_CEF_LIFE_SPAN_HANDLER_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_LIFE_SPAN_HANDLER_CAPI_H_
#pragma once

#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_browser_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

struct _cef_client_t;

///
/// Implement this structure to handle events related to browser life span. The
/// functions of this structure will be called on the UI thread unless otherwise
/// indicated.
///
typedef struct _cef_life_span_handler_t {
  ///
  /// Base structure.
  ///
  cef_base_ref_counted_t base;

  ///
  /// 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 NULL 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 (1) if the popup was opened via explicit user gesture (e.g.
  /// clicking a link) or false (0) 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 (0). To cancel creation of the
  /// popup browser return true (1). The |client| and |settings| values will
  /// default to the source browser's values. If the |no_javascript_access|
  /// value is set to false (0) 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 cef_browser_view_t. 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).
  /// The |extra_info| parameter provides an opportunity to specify extra
  /// information specific to the created popup browser that will be passed to
  /// cef_render_process_handler_t::on_browser_created() in the render process.
  ///
  int(CEF_CALLBACK* on_before_popup)(
      struct _cef_life_span_handler_t* self,
      struct _cef_browser_t* browser,
      struct _cef_frame_t* frame,
      const cef_string_t* target_url,
      const cef_string_t* target_frame_name,
      cef_window_open_disposition_t target_disposition,
      int user_gesture,
      const cef_popup_features_t* popupFeatures,
      struct _cef_window_info_t* windowInfo,
      struct _cef_client_t** client,
      struct _cef_browser_settings_t* settings,
      struct _cef_dictionary_value_t** extra_info,
      int* no_javascript_access);

  ///
  /// Called on the UI thread before a new DevTools popup browser is created.
  /// The |browser| value represents the source of the popup request. Optionally
  /// modify |windowInfo|, |client|, |settings| and |extra_info| values. The
  /// |client|, |settings| and |extra_info| values will default to the source
  /// browser's values. Any modifications to |windowInfo| will be ignored if the
  /// parent browser is Views-hosted (wrapped in a cef_browser_view_t).
  ///
  /// The |extra_info| parameter provides an opportunity to specify extra
  /// information specific to the created popup browser that will be passed to
  /// cef_render_process_handler_t::on_browser_created() in the render process.
  /// The existing |extra_info| object, if any, will be read-only but may be
  /// replaced with a new object.
  ///
  /// Views-hosted source browsers will create Views-hosted DevTools popups
  /// unless |use_default_window| is set to to true (1). DevTools popups can be
  /// blocked by returning true (1) from cef_command_handler_t::OnChromeCommand
  /// for IDC_DEV_TOOLS. Only used with Chrome style.
  ///
  void(CEF_CALLBACK* on_before_dev_tools_popup)(
      struct _cef_life_span_handler_t* self,
      struct _cef_browser_t* browser,
      struct _cef_window_info_t* windowInfo,
      struct _cef_client_t** client,
      struct _cef_browser_settings_t* settings,
      struct _cef_dictionary_value_t** extra_info,
      int* use_default_window);

  ///
  /// Called after a new browser is created. It is now safe to begin performing
  /// actions with |browser|. cef_frame_handler_t callbacks related to initial
  /// main frame creation will arrive before this callback. See
  /// cef_frame_handler_t documentation for additional usage information.
  ///
  void(CEF_CALLBACK* on_after_created)(struct _cef_life_span_handler_t* self,
                                       struct _cef_browser_t* browser);

  ///
  /// Called when a browser has received a request to close. This may result
  /// directly from a call to cef_browser_host_t::*close_browser() 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
  /// do_close() function will be called after the JavaScript 'onunload' event
  /// has been fired.
  ///
  /// An application should handle top-level owner window close notifications by
  /// calling cef_browser_host_t::try_close_browser() or
  /// cef_browser_host_t::CloseBrowser(false (0)) 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 do_close() is called.
  ///
  /// When windowed rendering is enabled CEF will internally create a window or
  /// view to host the browser. In that case returning false (0) from do_close()
  /// 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 cef_window_delegate_t::can_close() callback from Views). If the
  /// browser's host window/view has already been destroyed (via view hierarchy
  /// tear-down, for example) then do_close() will not be called for that
  /// browser since is no longer possible to cancel the close.
  ///
  /// When windowed rendering is disabled returning false (0) from do_close()
  /// 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 do_close() and return true
  /// (1).
  ///
  /// The cef_life_span_handler_t::on_before_close() function will be called
  /// after do_close() (if do_close() is called) and immediately before the
  /// browser object is destroyed. The application should only exit after
  /// on_before_close() 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 cef_browser_host_t::try_close_browser(). 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
  /// on_before_close() handler is called and the browser object
  ///     is destroyed.
  /// 10. Application exits by calling cef_quit_message_loop() if no other
  /// browsers
  ///     exist.
  ///
  /// Example 2: Using cef_browser_host_t::CloseBrowser(false (0)) and
  /// implementing the do_close() 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 do_close() 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
  /// on_before_close() handler is called and the browser object
  ///     is destroyed.
  /// 11. Application exits by calling cef_quit_message_loop() if no other
  /// browsers
  ///     exist.
  ///
  int(CEF_CALLBACK* do_close)(struct _cef_life_span_handler_t* self,
                              struct _cef_browser_t* browser);

  ///
  /// Called just before a browser is destroyed. Release all references to the
  /// browser object and do not attempt to execute any functions on the browser
  /// object (other than IsValid, GetIdentifier or IsSame) after this callback
  /// returns. cef_frame_handler_t callbacks related to final main frame
  /// destruction will arrive after this callback and cef_browser_t::IsValid
  /// will return false (0) at that time. Any in-progress network requests
  /// associated with |browser| will be aborted when the browser is destroyed,
  /// and cef_resource_request_handler_t callbacks related to those requests may
  /// still arrive on the IO thread after this callback. See cef_frame_handler_t
  /// and do_close() documentation for additional usage information.
  ///
  void(CEF_CALLBACK* on_before_close)(struct _cef_life_span_handler_t* self,
                                      struct _cef_browser_t* browser);
} cef_life_span_handler_t;

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_CEF_LIFE_SPAN_HANDLER_CAPI_H_