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client_handler.cpp
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//
Copyright (c) 2012-2014 The CEF Python authors. All rights reserved.
//
License: New BSD License.
//
Website: http://code.google.com/p/cefpython/
//
ClientHandler code is running in the Browser process only.
#
include
"
client_handler.h
"
#
include
"
cefpython_public_api.h
"
#
include
"
DebugLog.h
"
#
include
"
LOG_DEBUG.h
"
#
if
defined(OS_WIN)
#
include
<
Shellapi.h
>
#
pragma
comment(lib, "Shell32.lib")
#
include
"
dpi_aware.h
"
#
elif
defined(OS_LINUX)
#
include
<
unistd.h
>
#
include
<
stdlib.h
>
#
endif
//
----------------------------------------------------------------------------
//
Linux equivalent of ShellExecute
//
----------------------------------------------------------------------------
#
if
defined(OS_LINUX)
void
OpenInExternalBrowser
(
const
std::string& url)
{
if
(url.
empty
()) {
DebugLog
(
"
Browser: OpenInExternalBrowser() FAILED: url is empty
"
);
return
;
}
std::string msg =
"
Browser: OpenInExternalBrowser(): url=
"
;
msg.
append
(url.
c_str
());
DebugLog
(msg.
c_str
());
//
xdg-open is a desktop-independent tool for running
//
default applications. Installed by default on Ubuntu.
//
xdg-open process is running in the backround until
//
cefpython app closes.
std::string prog =
"
xdg-open
"
;
//
Using system() opens up for bugs and exploits, not
//
recommended.
//
Fork yourself and run in parallel, do not block the
//
current proces.
char
*args[
3
];
args[
0
] = (
char
*) prog.
c_str
();
args[
1
] = (
char
*) url.
c_str
();
args[
2
] =
0
;
pid_t
pid =
fork
();
if
(!pid) {
execvp
(prog.
c_str
(), args);
}
}
#
endif
//
----------------------------------------------------------------------------
//
CefClient
//
----------------------------------------------------------------------------
bool
ClientHandler::OnProcessMessageReceived
(CefRefPtr<CefBrowser> browser,
CefProcessId source_process,
CefRefPtr<CefProcessMessage> message) {
if
(source_process !=
PID_RENDERER
) {
return
false
;
}
std::string messageName = message->
GetName
().
ToString
();
std::string logMessage =
"
Browser: OnProcessMessageReceived():
"
;
logMessage.
append
(messageName.
c_str
());
DebugLog
(logMessage.
c_str
());
if
(messageName ==
"
OnContextCreated
"
) {
CefRefPtr<CefListValue> arguments = message->
GetArgumentList
();
if
(arguments->
GetSize
() ==
1
&& arguments->
GetType
(
0
) ==
VTYPE_INT
) {
int64 frameId = arguments->
GetInt
(
0
);
CefRefPtr<CefFrame> frame = browser->
GetFrame
(frameId);
V8ContextHandler_OnContextCreated
(browser, frame);
return
true
;
}
else
{
DebugLog
(
"
Browser: OnProcessMessageReceived(): invalid arguments
"
\
"
, messageName = OnContextCreated
"
);
return
false
;
}
}
else
if
(messageName ==
"
OnContextReleased
"
) {
CefRefPtr<CefListValue> arguments = message->
GetArgumentList
();
if
(arguments->
GetSize
() ==
2
\
&& arguments->
GetType
(
0
) ==
VTYPE_INT
\
&& arguments->
GetType
(
1
) ==
VTYPE_INT
) {
int
browserId = arguments->
GetInt
(
0
);
int64 frameId = arguments->
GetInt
(
1
);
V8ContextHandler_OnContextReleased
(browserId, frameId);
return
true
;
}
else
{
DebugLog
(
"
Browser: OnProcessMessageReceived(): invalid arguments
"
\
"
, messageName = OnContextReleased
"
);
return
false
;
}
}
else
if
(messageName ==
"
V8FunctionHandler::Execute
"
) {
CefRefPtr<CefListValue> arguments = message->
GetArgumentList
();
if
(arguments->
GetSize
() ==
3
&& arguments->
GetType
(
0
) ==
VTYPE_INT
//
frameId
&& arguments->
GetType
(
1
) ==
VTYPE_STRING
//
functionName
&& arguments->
GetType
(
2
) ==
VTYPE_LIST
) {
//
functionArguments
int64 frameId = arguments->
GetInt
(
0
);
CefString functionName = arguments->
GetString
(
1
);
CefRefPtr<CefListValue> functionArguments = arguments->
GetList
(
2
);
CefRefPtr<CefFrame> frame = browser->
GetFrame
(frameId);
V8FunctionHandler_Execute
(browser, frame, functionName, functionArguments);
return
true
;
}
else
{
DebugLog
(
"
Browser: OnProcessMessageReceived(): invalid arguments
"
\
"
, messageName = V8FunctionHandler::Execute
"
);
return
false
;
}
}
else
if
(messageName ==
"
ExecutePythonCallback
"
) {
CefRefPtr<CefListValue> arguments = message->
GetArgumentList
();
if
(arguments->
GetSize
() ==
2
&& arguments->
GetType
(
0
) ==
VTYPE_INT
//
callbackId
&& arguments->
GetType
(
1
) ==
VTYPE_LIST
) {
//
functionArguments
int
callbackId = arguments->
GetInt
(
0
);
CefRefPtr<CefListValue> functionArguments = arguments->
GetList
(
1
);
ExecutePythonCallback
(browser, callbackId, functionArguments);
return
true
;
}
else
{
DebugLog
(
"
Browser: OnProcessMessageReceived(): invalid arguments
"
\
"
, messageName = ExecutePythonCallback
"
);
return
false
;
}
}
else
if
(messageName ==
"
RemovePythonCallbacksForFrame
"
) {
CefRefPtr<CefListValue> arguments = message->
GetArgumentList
();
if
(arguments->
GetSize
() ==
1
&& arguments->
GetType
(
0
) ==
VTYPE_INT
) {
int
frameId = arguments->
GetInt
(
0
);
RemovePythonCallbacksForFrame
(frameId);
return
true
;
}
else
{
DebugLog
(
"
Browser: OnProcessMessageReceived(): invalid arguments
"
\
"
, messageName = ExecutePythonCallback
"
);
return
false
;
}
}
return
false
;
}
//
----------------------------------------------------------------------------
//
CefLifeSpanHandler
//
----------------------------------------------------------------------------
//
/
//
Called on the IO thread before a new popup window is created. The |browser|
//
and |frame| parameters represent the source of the popup request. The
//
|target_url| and |target_frame_name| values may be empty if none were
//
specified with the request. The |popupFeatures| structure contains
//
information about the requested popup window. To allow creation of the
//
popup window optionally modify |windowInfo|, |client|, |settings| and
//
|no_javascript_access| and return false. To cancel creation of the popup
//
window return true. The |client| and |settings| values will default to the
//
source browser's values. The |no_javascript_access| value indicates whether
//
the new browser window should be scriptable and in the same process as the
//
source browser.
/*
--cef(optional_param=target_url,optional_param=target_frame_name)--
*/
bool
ClientHandler::OnBeforePopup
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
const
CefString& target_url,
const
CefString& target_frame_name,
const
CefPopupFeatures& popupFeatures,
CefWindowInfo& windowInfo,
CefRefPtr<CefClient>& client,
CefBrowserSettings& settings,
bool
* no_javascript_access) {
REQUIRE_IO_THREAD
();
//
Note: passing popupFeatures is not yet supported.
return
LifespanHandler_OnBeforePopup
(browser, frame, target_url,
target_frame_name,
0
, windowInfo, client, settings,
no_javascript_access);
}
//
/
//
Called after a new browser is created.
//
/
/*
--cef()--
*/
void
ClientHandler::OnAfterCreated
(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD
();
#
if
defined(OS_WIN)
//
High DPI support.
CefString auto_zooming =
ApplicationSettings_GetString
(
"
auto_zooming
"
);
if
(!auto_zooming.
empty
()) {
LOG_DEBUG
<<
"
Browser: OnAfterCreated(): auto_zooming =
"
<< auto_zooming.
ToString
();
SetBrowserDpiSettings
(browser, auto_zooming);
}
#
endif
LifespanHandler_OnAfterCreated
(browser);
}
//
/
//
Called when a modal window is about to display and the modal loop should
//
begin running. Return false to use the default modal loop implementation or
//
true to use a custom implementation.
//
/
/*
--cef()--
*/
bool
ClientHandler::RunModal
(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD
();
return
LifespanHandler_RunModal
(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 a top-level OS window created by CEF and the user attempts to
//
close the window. This method will be called after the JavaScript
//
'onunload' event has been fired. It will not be called for browsers after
//
the associated OS window has been destroyed (for those browsers it is no
//
longer possible to cancel the close).
//
//
If CEF created an OS window for the browser returning false will send an OS
//
close notification to the browser window's top-level owner (e.g. WM_CLOSE
//
on Windows, performClose: on OS-X and "delete_event" on Linux). If no OS
//
window exists (window rendering disabled) returning false will cause the
//
browser object to be destroyed immediately. Return true if the browser is
//
parented to another window and that other window needs to receive close
//
notification via some non-standard technique.
//
//
If an application provides its own top-level window it should handle OS
//
close notifications by calling CefBrowserHost::CloseBrowser(false) instead
//
of immediately closing (see the example below). This gives CEF an
//
opportunity to process the 'onbeforeunload' event and optionally cancel the
//
close before DoClose() is called.
//
//
The CefLifeSpanHandler::OnBeforeClose() method will be called immediately
//
before the browser object is destroyed. The application should only exit
//
after OnBeforeClose() has been called for all existing browsers.
//
//
If the browser represents a modal window and a custom modal loop
//
implementation was provided in CefLifeSpanHandler::RunModal() this callback
//
should be used to restore the opener window to a usable state.
//
//
By way of example consider what should happen during window close when the
//
browser is parented to an application-provided top-level OS window.
//
1. User clicks the window close button which sends an OS close
//
notification (e.g. WM_CLOSE on Windows, performClose: on OS-X and
//
"delete_event" on Linux).
//
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. Call CefBrowserHost::ParentWindowWillClose() to notify CEF that the
//
parent window will be closing.
//
B. Set a flag to indicate that the next close attempt will be allowed.
//
C. Return false.
//
7. CEF sends an OS close notification.
//
8. Application's top-level window receives the OS close notification and
//
allows the window to close based on the flag from #6B.
//
9. Browser OS window is destroyed.
//
10. Application's CefLifeSpanHandler::OnBeforeClose() handler is called and
//
the browser object is destroyed.
//
11. Application exits by calling CefQuitMessageLoop() if no other browsers
//
exist.
//
/
/*
--cef()--
*/
bool
ClientHandler::DoClose
(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD
();
return
LifespanHandler_DoClose
(browser);
}
//
/
//
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. If this is a modal window and a custom
//
modal loop implementation was provided in RunModal() this callback should
//
be used to exit the custom modal loop. See DoClose() documentation for
//
additional usage information.
//
/
/*
--cef()--
*/
void
ClientHandler::OnBeforeClose
(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD
();
LifespanHandler_OnBeforeClose
(browser);
}
//
--------------------------------------------------------------------------
//
CefDisplayHandler
//
--------------------------------------------------------------------------
//
/
//
Implement this interface to handle events related to browser display state.
//
The methods of this class will be called on the UI thread.
//
/
//
/
//
Called when a frame's address has changed.
//
/
/*
--cef()--
*/
void
ClientHandler::OnAddressChange
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
const
CefString& url) {
REQUIRE_UI_THREAD
();
DisplayHandler_OnAddressChange
(browser, frame, url);
}
//
/
//
Called when the page title changes.
//
/
/*
--cef(optional_param=title)--
*/
void
ClientHandler::OnTitleChange
(CefRefPtr<CefBrowser> browser,
const
CefString& title) {
REQUIRE_UI_THREAD
();
DisplayHandler_OnTitleChange
(browser, title);
}
//
/
//
Called when the browser is about to display a tooltip. |text| contains the
//
text that will be displayed in the tooltip. To handle the display of the
//
tooltip yourself return true. Otherwise, you can optionally modify |text|
//
and then return false to allow the browser to display the tooltip.
//
When window rendering is disabled the application is responsible for
//
drawing tooltips and the return value is ignored.
//
/
/*
--cef(optional_param=text)--
*/
bool
ClientHandler::OnTooltip
(CefRefPtr<CefBrowser> browser,
CefString& text) {
REQUIRE_UI_THREAD
();
return
DisplayHandler_OnTooltip
(browser, text);
//
return false;
}
//
/
//
Called when the browser receives a status message. |text| contains the text
//
that will be displayed in the status message and |type| indicates the
//
status message type.
//
/
/*
--cef(optional_param=value)--
*/
void
ClientHandler::OnStatusMessage
(CefRefPtr<CefBrowser> browser,
const
CefString& value) {
REQUIRE_UI_THREAD
();
DisplayHandler_OnStatusMessage
(browser, value);
}
//
/
//
Called to display a console message. Return true to stop the message from
//
being output to the console.
//
/
/*
--cef(optional_param=message,optional_param=source)--
*/
bool
ClientHandler::OnConsoleMessage
(CefRefPtr<CefBrowser> browser,
const
CefString& message,
const
CefString& source,
int
line) {
REQUIRE_UI_THREAD
();
return
DisplayHandler_OnConsoleMessage
(browser, message, source, line);
//
return false;
}
//
----------------------------------------------------------------------------
//
CefKeyboardHandler
//
----------------------------------------------------------------------------
//
/
//
Implement this interface to handle events related to keyboard input. The
//
methods of this class will be called on the UI thread.
//
/
//
Called before a keyboard event is sent to the renderer. |event| contains
//
information about the keyboard event. |os_event| is the operating system
//
event message, if any. Return true if the event was handled or false
//
otherwise. If the event will be handled in OnKeyEvent() as a keyboard
//
shortcut set |is_keyboard_shortcut| to true and return false.
/*
--cef()--
*/
bool
ClientHandler::OnPreKeyEvent
(CefRefPtr<CefBrowser> browser,
const
CefKeyEvent& event,
CefEventHandle os_event,
bool
* is_keyboard_shortcut) {
REQUIRE_UI_THREAD
();
return
KeyboardHandler_OnPreKeyEvent
(browser, event, os_event,
is_keyboard_shortcut);
//
Default: return false;
}
//
/
//
Called after the renderer and JavaScript in the page has had a chance to
//
handle the event. |event| contains information about the keyboard event.
//
|os_event| is the operating system event message, if any. Return true if
//
the keyboard event was handled or false otherwise.
//
/
/*
--cef()--
*/
bool
ClientHandler::OnKeyEvent
(CefRefPtr<CefBrowser> browser,
const
CefKeyEvent& event,
CefEventHandle os_event) {
REQUIRE_UI_THREAD
();
return
KeyboardHandler_OnKeyEvent
(browser, event, os_event);
//
Default: return false;
}
//
--------------------------------------------------------------------------
//
CefRequestHandler
//
--------------------------------------------------------------------------
//
/
//
Implement this interface to handle events related to browser requests. The
//
methods of this class will be called on the thread indicated.
//
/
//
/
//
Called on the UI thread before browser navigation. Return true to cancel
//
the navigation or false to allow the navigation to proceed. The |request|
//
object cannot be modified in this callback.
//
CefLoadHandler::OnLoadingStateChange will be called twice in all cases.
//
If the navigation is allowed CefLoadHandler::OnLoadStart and
//
CefLoadHandler::OnLoadEnd will be called. If the navigation is canceled
//
CefLoadHandler::OnLoadError will be called with an |errorCode| value of
//
ERR_ABORTED.
//
/
/*
--cef()--
*/
bool
ClientHandler::OnBeforeBrowse
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
bool
is_redirect) {
REQUIRE_UI_THREAD
();
return
RequestHandler_OnBeforeBrowse
(browser, frame, request, is_redirect);
}
//
/
//
Called on the IO thread before a resource request is loaded. The |request|
//
object may be modified. To cancel the request return true otherwise return
//
false.
//
/
/*
--cef()--
*/
bool
ClientHandler::OnBeforeResourceLoad
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request) {
REQUIRE_IO_THREAD
();
return
RequestHandler_OnBeforeResourceLoad
(browser, frame, request);
//
Default: return false;
}
//
/
//
Called on the IO thread before a resource is loaded. To allow the resource
//
to load normally return NULL. To specify a handler for the resource return
//
a CefResourceHandler object. The |request| object should not be modified in
//
this callback.
//
/
/*
--cef()--
*/
CefRefPtr<CefResourceHandler>
ClientHandler::GetResourceHandler
(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request) {
REQUIRE_IO_THREAD
();
return
RequestHandler_GetResourceHandler
(browser, frame, request);
}
//
/
//
Called on the IO thread when a resource load is redirected. The |old_url|
//
parameter will contain the old URL. The |new_url| parameter will contain
//
the new URL and can be changed if desired.
//
/
/*
--cef()--
*/
void
ClientHandler::OnResourceRedirect
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
const
CefString& old_url,
CefString& new_url) {
REQUIRE_IO_THREAD
();
RequestHandler_OnResourceRedirect
(browser, frame, old_url, new_url);
}
//
/
//
Called on the IO thread when the browser needs credentials from the user.
//
|isProxy| indicates whether the host is a proxy server. |host| contains the
//
hostname and |port| contains the port number. Return true to continue the
//
request and call CefAuthCallback::Continue() when the authentication
//
information is available. Return false to cancel the request.
//
/
/*
--cef(optional_param=realm)--
*/
bool
ClientHandler::GetAuthCredentials
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
bool
isProxy,
const
CefString& host,
int
port,
const
CefString& realm,
const
CefString& scheme,
CefRefPtr<CefAuthCallback> callback) {
REQUIRE_IO_THREAD
();
return
RequestHandler_GetAuthCredentials
(browser, frame, isProxy, host,
port, realm, scheme, callback);
//
Default: return false;
}
//
/
//
Called on the IO thread when JavaScript requests a specific storage quota
//
size via the webkitStorageInfo.requestQuota function. |origin_url| is the
//
origin of the page making the request. |new_size| is the requested quota
//
size in bytes. Return true and call CefQuotaCallback::Continue() either in
//
this method or at a later time to grant or deny the request. Return false
//
to cancel the request.
//
/
/*
--cef(optional_param=realm)--
*/
bool
ClientHandler::OnQuotaRequest
(CefRefPtr<CefBrowser> browser,
const
CefString& origin_url,
int64 new_size,
CefRefPtr<CefQuotaCallback> callback) {
REQUIRE_IO_THREAD
();
return
RequestHandler_OnQuotaRequest
(browser, origin_url, new_size,
callback);
//
Default: return false;
}
//
/
//
Called on the UI thread to handle requests for URLs with an unknown
//
protocol component. Set |allow_os_execution| to true to attempt execution
//
via the registered OS protocol handler, if any.
//
SECURITY WARNING: YOU SHOULD USE THIS METHOD TO ENFORCE RESTRICTIONS BASED
//
ON SCHEME, HOST OR OTHER URL ANALYSIS BEFORE ALLOWING OS EXECUTION.
//
/
/*
--cef()--
*/
void
ClientHandler::OnProtocolExecution
(CefRefPtr<CefBrowser> browser,
const
CefString& url,
bool
& allow_os_execution) {
REQUIRE_UI_THREAD
();
RequestHandler_OnProtocolExecution
(browser, url, allow_os_execution);
}
//
/
//
Called on the browser process IO thread before a plugin is loaded. Return
//
true to block loading of the plugin.
//
/
/*
--cef(optional_param=url,optional_param=policy_url)--
*/
bool
ClientHandler::OnBeforePluginLoad
(CefRefPtr<CefBrowser> browser,
const
CefString& url,
const
CefString& policy_url,
CefRefPtr<CefWebPluginInfo> info) {
REQUIRE_IO_THREAD
();
return
RequestHandler_OnBeforePluginLoad
(browser, url, policy_url, info);
//
Default: return false;
}
//
/
//
Called on the UI thread to handle requests for URLs with an invalid
//
SSL certificate. Return true and call CefAllowCertificateErrorCallback::
//
Continue() either in this method or at a later time to continue or cancel
//
the request. Return false to cancel the request immediately. If |callback|
//
is empty the error cannot be recovered from and the request will be
//
canceled automatically. If CefSettings.ignore_certificate_errors is set
//
all invalid certificates will be accepted without calling this method.
//
/
/*
--cef()--
*/
bool
ClientHandler::OnCertificateError
(
cef_errorcode_t
cert_error,
const
CefString& request_url,
CefRefPtr<CefAllowCertificateErrorCallback> callback) {
REQUIRE_UI_THREAD
();
return
RequestHandler_OnCertificateError
(
cert_error, request_url, callback);
//
Default: return false;
}
//
/
//
Called when the render process terminates unexpectedly. |status| indicates
//
how the process terminated.
//
/
/*
--cef()--
*/
void
ClientHandler::OnRenderProcessTerminated
(CefRefPtr<CefBrowser> browser,
cef_termination_status_t
status) {
REQUIRE_UI_THREAD
();
DebugLog
(
"
Browser: OnRenderProcessTerminated()
"
);
RequestHandler_OnRendererProcessTerminated
(browser, status);
}
//
/
//
Called when a plugin has crashed. |plugin_path| is the path of the plugin
//
that crashed.
//
/
/*
--cef()--
*/
void
ClientHandler::OnPluginCrashed
(CefRefPtr<CefBrowser> browser,
const
CefString& plugin_path) {
REQUIRE_UI_THREAD
();
RequestHandler_OnPluginCrashed
(browser, plugin_path);
}
//
--------------------------------------------------------------------------
//
CefLoadHandler
//
--------------------------------------------------------------------------
//
/
//
Implement this interface to handle events related to browser load status.
//
The methods of this class will be called on the UI thread.
//
/
//
/
//
Called when the loading state has changed.
//
/
/*
--cef()--
*/
void
ClientHandler::OnLoadingStateChange
(CefRefPtr<CefBrowser> browser,
bool
isLoading,
bool
canGoBack,
bool
canGoForward) {
REQUIRE_UI_THREAD
();
LoadHandler_OnLoadingStateChange
(browser, isLoading, canGoBack,
canGoForward);
}
//
/
//
Called when the browser begins loading a frame. The |frame| value will
//
never be empty -- call the IsMain() method to check if this frame is the
//
main frame. Multiple frames may be loading at the same time. Sub-frames may
//
start or continue loading after the main frame load has ended. This method
//
may not be called for a particular frame if the load request for that frame
//
fails.
//
/
/*
--cef()--
*/
void
ClientHandler::OnLoadStart
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame) {
REQUIRE_UI_THREAD
();
LoadHandler_OnLoadStart
(browser, frame);
}
//
/
//
Called when the browser is done loading a frame. The |frame| value will
//
never be empty -- call the IsMain() method to check if this frame is the
//
main frame. Multiple frames may be loading at the same time. Sub-frames may
//
start or continue loading after the main frame load has ended. This method
//
will always be called for all frames irrespective of whether the request
//
completes successfully.
//
/
/*
--cef()--
*/
void
ClientHandler::OnLoadEnd
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
int
httpStatusCode) {
REQUIRE_UI_THREAD
();
LoadHandler_OnLoadEnd
(browser, frame, httpStatusCode);
}
//
/
//
Called when the browser fails to load a resource. |errorCode| is the error
//
code number, |errorText| is the error text and and |failedUrl| is the URL
//
that failed to load. See net\base\net_error_list.h for complete
//
descriptions of the error codes.
//
/
/*
--cef(optional_param=errorText)--
*/
void
ClientHandler::OnLoadError
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
cef_errorcode_t
errorCode,
const
CefString& errorText,
const
CefString& failedUrl) {
REQUIRE_UI_THREAD
();
LoadHandler_OnLoadError
(browser, frame, errorCode, errorText, failedUrl);
}
//
----------------------------------------------------------------------------
//
CefRenderHandler
//
----------------------------------------------------------------------------
//
/
//
Implement this interface to handle events when window rendering is disabled.
//
The methods of this class will be called on the UI thread.
//
/
//
/
//
Called to retrieve the root window rectangle in screen coordinates. Return
//
true if the rectangle was provided.
//
/
/*
--cef()--
*/
bool
ClientHandler::GetRootScreenRect
(CefRefPtr<CefBrowser> browser,
CefRect& rect) {
REQUIRE_UI_THREAD
();
return
RenderHandler_GetRootScreenRect
(browser, rect);
}
//
/
//
Called to retrieve the view rectangle which is relative to screen
//
coordinates. Return true if the rectangle was provided.
//
/
/*
--cef()--
*/
bool
ClientHandler::GetViewRect
(CefRefPtr<CefBrowser> browser, CefRect& rect) {
REQUIRE_UI_THREAD
();
return
RenderHandler_GetViewRect
(browser, rect);
}
//
/
//
Called to retrieve the translation from view coordinates to actual screen
//
coordinates. Return true if the screen coordinates were provided.
//
/
/*
--cef()--
*/
bool
ClientHandler::GetScreenPoint
(CefRefPtr<CefBrowser> browser,
int
viewX,
int
viewY,
int
& screenX,
int
& screenY) {
REQUIRE_UI_THREAD
();
return
RenderHandler_GetScreenPoint
(browser, viewX, viewY, screenX,
screenY);
}
//
/
//
Called to allow the client to fill in the CefScreenInfo object with
//
appropriate values. Return true if the |screen_info| structure has been
//
modified.
//
//
If the screen info rectangle is left empty the rectangle from GetViewRect
//
will be used. If the rectangle is still empty or invalid popups may not be
//
drawn correctly.
//
/
/*
--cef()--
*/
bool
ClientHandler::GetScreenInfo
(CefRefPtr<CefBrowser> browser,
CefScreenInfo& screen_info) {
REQUIRE_UI_THREAD
();
return
RenderHandler_GetScreenInfo
(browser, screen_info);
}
//
/
//
Called when the browser wants to show or hide the popup widget. The popup
//
should be shown if |show| is true and hidden if |show| is false.
//
/
/*
--cef()--
*/
void
ClientHandler::OnPopupShow
(CefRefPtr<CefBrowser> browser,
bool
show) {
REQUIRE_UI_THREAD
();
RenderHandler_OnPopupShow
(browser, show);
}
//
/
//
Called when the browser wants to move or resize the popup widget. |rect|
//
contains the new location and size.
//
/
/*
--cef()--
*/
void
ClientHandler::OnPopupSize
(CefRefPtr<CefBrowser> browser,
const
CefRect& rect) {
REQUIRE_UI_THREAD
();
RenderHandler_OnPopupSize
(browser, rect);
}
//
/
//
Called when an element should be painted. |type| indicates whether the
//
element is the view or the popup widget. |buffer| contains the pixel data
//
for the whole image. |dirtyRects| contains the set of rectangles that need
//
to be repainted. On Windows |buffer| will be |width|*|height|*4 bytes
//
in size and represents a BGRA image with an upper-left origin.
//
/
/*
--cef()--
*/
void
ClientHandler::OnPaint
(CefRefPtr<CefBrowser> browser,
PaintElementType type,
const
RectList& dirtyRects,
const
void
* buffer,
int
width,
int
height) {
REQUIRE_UI_THREAD
();
RenderHandler_OnPaint
(browser, type,
const_cast
<RectList&>(dirtyRects), \
buffer, width, height);
};
//
/
//
Called when the browser window's cursor has changed.
//
/
/*
--cef()--
*/
void
ClientHandler::OnCursorChange
(CefRefPtr<CefBrowser> browser,
CefCursorHandle cursor) {
REQUIRE_UI_THREAD
();
RenderHandler_OnCursorChange
(browser, cursor);
}
//
/
//
Called when the scroll offset has changed.
//
/
/*
--cef()--
*/
void
ClientHandler::OnScrollOffsetChanged
(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD
();
RenderHandler_OnScrollOffsetChanged
(browser);
}
//
----------------------------------------------------------------------------
//
CefJSDialogHandler
//
----------------------------------------------------------------------------
//
/
//
Called to run a JavaScript dialog. The |default_prompt_text| value will be
//
specified for prompt dialogs only. Set |suppress_message| to true and
//
return false to suppress the message (suppressing messages is preferable
//
to immediately executing the callback as this is used to detect presumably
//
malicious behavior like spamming alert messages in onbeforeunload). Set
//
|suppress_message| to false and return false to use the default
//
implementation (the default implementation will show one modal dialog at a
//
time and suppress any additional dialog requests until the displayed dialog
//
is dismissed). Return true if the application will use a custom dialog or
//
if the callback has been executed immediately. Custom dialogs may be either
//
modal or modeless. If a custom dialog is used the application must execute
//
|callback| once the custom dialog is dismissed.
//
/
/*
--cef(optional_param=accept_lang,optional_param=message_text,
optional_param=default_prompt_text)--
*/
bool
ClientHandler::OnJSDialog
(CefRefPtr<CefBrowser> browser,
const
CefString& origin_url,
const
CefString& accept_lang,
JSDialogType dialog_type,
const
CefString& message_text,
const
CefString& default_prompt_text,
CefRefPtr<CefJSDialogCallback> callback,
bool
& suppress_message) {
REQUIRE_UI_THREAD
();
return
JavascriptDialogHandler_OnJavascriptDialog
(browser, origin_url,
accept_lang, dialog_type, message_text, default_prompt_text,
callback, suppress_message);
}
//
/
//
Called to run a dialog asking the user if they want to leave a page. Return
//
false to use the default dialog implementation. Return true if the
//
application will use a custom dialog or if the callback has been executed
//
immediately. Custom dialogs may be either modal or modeless. If a custom
//
dialog is used the application must execute |callback| once the custom
//
dialog is dismissed.
//
/
/*
--cef(optional_param=message_text)--
*/
bool
ClientHandler::OnBeforeUnloadDialog
(CefRefPtr<CefBrowser> browser,
const
CefString& message_text,
bool
is_reload,
CefRefPtr<CefJSDialogCallback> callback) {
REQUIRE_UI_THREAD
();
return
JavascriptDialogHandler_OnBeforeUnloadJavascriptDialog
(browser,
message_text, is_reload, callback);
}
//
/
//
Called to cancel any pending dialogs and reset any saved dialog state. Will
//
be called due to events like page navigation irregardless of whether any
//
dialogs are currently pending.
//
/
/*
--cef()--
*/
void
ClientHandler::OnResetDialogState
(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD
();
return
JavascriptDialogHandler_OnResetJavascriptDialogState
(browser);
}
//
/
//
Called when the default implementation dialog is closed.
//
/
/*
--cef()--
*/
void
ClientHandler::OnDialogClosed
(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD
();
return
JavascriptDialogHandler_OnJavascriptDialogClosed
(browser);
}
//
----------------------------------------------------------------------------
//
CefDownloadHandler
//
----------------------------------------------------------------------------
//
/
//
Class used to handle file downloads. The methods of this class will called
//
on the browser process UI thread.
//
/
//
/
//
Called before a download begins. |suggested_name| is the suggested name for
//
the download file. By default the download will be canceled. Execute
//
|callback| either asynchronously or in this method to continue the download
//
if desired. Do not keep a reference to |download_item| outside of this
//
method.
//
/
/*
--cef()--
*/
void
ClientHandler::OnBeforeDownload
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefDownloadItem> download_item,
const
CefString& suggested_name,
CefRefPtr<CefBeforeDownloadCallback> callback) {
REQUIRE_UI_THREAD
();
bool
downloads_enabled =
ApplicationSettings_GetBool
(
"
downloads_enabled
"
);
if
(downloads_enabled) {
std::string msg =
"
Browser: About to download file:
"
;
msg.
append
(suggested_name.
ToString
().
c_str
());
DebugLog
(msg.
c_str
());
callback->
Continue
(suggested_name,
true
);
}
else
{
DebugLog
(
"
Browser: Tried to download file, but downloads are disabled
"
);
}
}
//
/
//
Called when a download's status or progress information has been updated.
//
This may be called multiple times before and after OnBeforeDownload().
//
Execute |callback| either asynchronously or in this method to cancel the
//
download if desired. Do not keep a reference to |download_item| outside of
//
this method.
//
/
/*
--cef()--
*/
void
ClientHandler::OnDownloadUpdated
(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefDownloadItem> download_item,
CefRefPtr<CefDownloadItemCallback> callback) {
REQUIRE_UI_THREAD
();
if
(download_item->
IsComplete
()) {
std::string msg =
"
Browser: Download completed, saved to:
"
;
msg.
append
(download_item->
GetFullPath
().
ToString
().
c_str
());
DebugLog
(msg.
c_str
());
}
else
if
(download_item->
IsCanceled
()) {
DebugLog
(
"
Browser: Download was cancelled
"
);
}
}
//
----------------------------------------------------------------------------
//
CefContextMenuHandler
//
----------------------------------------------------------------------------
#
define
_MENU_ID_DEVTOOLS
MENU_ID_USER_FIRST
+
1
#
define
_MENU_ID_RELOAD_PAGE
MENU_ID_USER_FIRST
+
2
#
define
_MENU_ID_OPEN_PAGE_IN_EXTERNAL_BROWSER
MENU_ID_USER_FIRST
+
3
#
define
_MENU_ID_OPEN_FRAME_IN_EXTERNAL_BROWSER
MENU_ID_USER_FIRST
+
4
//
/
//
Called before a context menu is displayed. |params| provides information
//
about the context menu state. |model| initially contains the default
//
context menu. The |model| can be cleared to show no context menu or
//
modified to show a custom menu. Do not keep references to |params| or
//
|model| outside of this callback.
//
/
/*
--cef()--
*/
void
ClientHandler::OnBeforeContextMenu
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefContextMenuParams> params,
CefRefPtr<CefMenuModel> model) {
bool
enabled =
ApplicationSettings_GetBoolFromDict
(\
"
context_menu
"
,
"
enabled
"
);
bool
navigation =
ApplicationSettings_GetBoolFromDict
(\
"
context_menu
"
,
"
navigation
"
);
bool
print =
ApplicationSettings_GetBoolFromDict
(\
"
context_menu
"
,
"
print
"
);
bool
view_source =
ApplicationSettings_GetBoolFromDict
(\
"
context_menu
"
,
"
view_source
"
);
bool
external_browser =
ApplicationSettings_GetBoolFromDict
(\
"
context_menu
"
,
"
external_browser
"
);
bool
devtools =
ApplicationSettings_GetBoolFromDict
(\
"
context_menu
"
,
"
devtools
"
);
if
(!enabled) {
model->
Clear
();
return
;
}
if
(!navigation) {
model->
Remove
(
MENU_ID_BACK
);
model->
Remove
(
MENU_ID_FORWARD
);
//
Remove separator
model->
RemoveAt
(
0
);
}
if
(!print) {
model->
Remove
(
MENU_ID_PRINT
);
}
if
(!view_source) {
model->
Remove
(
MENU_ID_VIEW_SOURCE
);
}
if
(!params->
IsEditable
() && params->
GetSelectionText
().
empty
()
&& (params->
GetPageUrl
().
length
()
|| params->
GetFrameUrl
().
length
())) {
if
(external_browser) {
model->
AddItem
(_MENU_ID_OPEN_PAGE_IN_EXTERNAL_BROWSER,
"
Open in external browser
"
);
if
(params->
GetFrameUrl
().
length
()
&& params->
GetPageUrl
() != params->
GetFrameUrl
()) {
model->
AddItem
(_MENU_ID_OPEN_FRAME_IN_EXTERNAL_BROWSER,
"
Open frame in external browser
"
);
}
}
if
(navigation) {
model->
InsertItemAt
(
2
, _MENU_ID_RELOAD_PAGE,
"
Reload
"
);
}
if
(devtools) {
model->
AddSeparator
();
model->
AddItem
(_MENU_ID_DEVTOOLS,
"
Developer Tools
"
);
}
}
}
//
/
//
Called to execute a command selected from the context menu. Return true if
//
the command was handled or false for the default implementation. See
//
cef_menu_id_t for the command ids that have default implementations. All
//
user-defined command ids should be between MENU_ID_USER_FIRST and
//
MENU_ID_USER_LAST. |params| will have the same values as what was passed to
//
OnBeforeContextMenu(). Do not keep a reference to |params| outside of this
//
callback.
//
/
/*
--cef()--
*/
bool
ClientHandler::OnContextMenuCommand
(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefContextMenuParams> params,
int
command_id,
EventFlags event_flags) {
if
(command_id == _MENU_ID_OPEN_PAGE_IN_EXTERNAL_BROWSER) {
#
if
defined(OS_WIN)
ShellExecuteA
(
0
,
"
open
"
, params->
GetPageUrl
().
ToString
().
c_str
(),
0
,
0
,
SW_SHOWNORMAL
);
#
elif
defined(OS_LINUX)
OpenInExternalBrowser
(params->
GetPageUrl
().
ToString
());
#
endif
return
true
;
}
else
if
(command_id == _MENU_ID_OPEN_FRAME_IN_EXTERNAL_BROWSER) {
#
if
defined(OS_WIN)
ShellExecuteA
(
0
,
"
open
"
, params->
GetFrameUrl
().
ToString
().
c_str
(),
0
,
0
,
SW_SHOWNORMAL
);
#
elif
defined(OS_LINUX)
OpenInExternalBrowser
(params->
GetFrameUrl
().
ToString
());
#
endif
return
true
;
}
else
if
(command_id == _MENU_ID_RELOAD_PAGE) {
browser->
ReloadIgnoreCache
();
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