cef/include/capi/cef_life_span_handler_capi.h

225 lines
11 KiB
C

// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// This file was generated by the CEF translator tool and should not edited
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=34a6559587adbd0dc3143989a8c6e49e0664b43e$
//
#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 struct _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 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 recieved 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_