protected override bool DoClose(CefBrowser browser)
{
Debug.WriteLine(DBGPREFIX + "DoClose");
// Returning false will send a top level browser close event? guess that is why the labview window closed?
// Sure does, need to return true and figure out more about the workflow
return true;
}
protected override bool OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)
{
if (DumpProcessMessages)
{
Console.WriteLine("Client::OnProcessMessageReceived: SourceProcess={0}", sourceProcess);
Console.WriteLine("Message Name={0} IsValid={1} IsReadOnly={2}", message.Name, message.IsValid, message.IsReadOnly);
var arguments = message.Arguments;
for (var i = 0; i < arguments.Count; i++)
{
var type = arguments.GetValueType(i);
object value;
switch (type)
{
case CefValueType.Null: value = null; break;
case CefValueType.String: value = arguments.GetString(i); break;
case CefValueType.Int: value = arguments.GetInt(i); break;
case CefValueType.Double: value = arguments.GetDouble(i); break;
case CefValueType.Bool: value = arguments.GetBool(i); break;
default: value = null; break;
}
Console.WriteLine(" [{0}] ({1}) = {2}", i, type, value);
}
}
var handled = DemoApp.BrowserMessageRouter.OnProcessMessageReceived(browser, sourceProcess, message);
if (handled) return true;
if (message.Name == "myMessage2" || message.Name == "myMessage3") return true;
return false;
}
private Task<IWebBrowserWindowProvider> InitTask(string fullpath, IWebSessionLogger logger)
{
TaskCompletionSource<IWebBrowserWindowProvider> tcs = new TaskCompletionSource<IWebBrowserWindowProvider>();
Task.Run(async () =>
{
var cefWindowInfo = CefWindowInfo.Create();
cefWindowInfo.SetAsWindowless(IntPtr.Zero, true);
//// Settings for the browser window itself (e.g. enable JavaScript?).
var cefBrowserSettings = new CefBrowserSettings();
// Initialize some the cust interactions with the browser process.
var cefClient = new TestCefClient();
// Start up the browser instance.
CefBrowserHost.CreateBrowser(cefWindowInfo, cefClient, cefBrowserSettings, fullpath);
_CefBrowser = await cefClient.GetLoadedBrowserAsync();
_CefFrame = _CefBrowser.GetMainFrame();
_TestCefGlueHTMLWindowProvider = new TestCefGlueHTMLWindowProvider(_CefFrame, cefClient);
tcs.SetResult(_TestCefGlueHTMLWindowProvider);
});
return tcs.Task;
}
protected override bool OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)
{
if (!this.loggingService.IsDebugEnabled)
{
return false;
}
this.loggingService.Debug("Client::OnProcessMessageReceived: SourceProcess={0}", sourceProcess);
this.loggingService.Debug("Message Name={0} IsValid={1} IsReadOnly={2}", message.Name, message.IsValid, message.IsReadOnly);
var arguments = message.Arguments;
for (var i = 0; i < arguments.Count; i++)
{
var type = arguments.GetValueType(i);
object value;
switch (type)
{
case CefValueType.Null: value = null; break;
case CefValueType.String: value = arguments.GetString(i); break;
case CefValueType.Int: value = arguments.GetInt(i); break;
case CefValueType.Double: value = arguments.GetDouble(i); break;
case CefValueType.Bool: value = arguments.GetBool(i); break;
default: value = null; break;
}
this.loggingService.Debug(" [{0}] ({1}) = {2}", i, type, value);
}
return false;
}
public ConsoleMessageEventArgs(CefBrowser browser, string message, string source, int line)
{
this.CefBrowser = browser;
this.Message = message;
this.Source = source;
this.Line = line;
}
protected override void OnAddressChange( CefBrowser browser, CefFrame frame, string url )
{
if( frame.IsMain )
{
owner.OnAddressChanged( url );
}
}
protected override void OnBeforeClose(CefBrowser browser)
{
if (_core.InvokeRequireOnUi())
_core.MainUiDispatcher.BeginInvoke((Action)_core.OnBeforeClose);
else
_core.OnBeforeClose();
}
protected override bool OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)
{
Console.WriteLine("Render::OnProcessMessageReceived: SourceProcess={0}", sourceProcess);
Console.WriteLine("Message Name={0} IsValid={1} IsReadOnly={2}", message.Name, message.IsValid, message.IsReadOnly);
var arguments = message.Arguments;
for (var i = 0; i < arguments.Count; i++)
{
var type = arguments.GetValueType(i);
object value;
switch (type)
{
case CefValueType.Null: value = null; break;
case CefValueType.String: value = arguments.GetString(i); break;
case CefValueType.Int: value = arguments.GetInt(i); break;
case CefValueType.Double: value = arguments.GetDouble(i); break;
case CefValueType.Bool: value = arguments.GetBool(i); break;
default: value = null; break;
}
Console.WriteLine(" [{0}] ({1}) = {2}", i, type, value);
}
if (message.Name == "myMessage2") return true;
var message2 = CefProcessMessage.Create("myMessage2");
var success = browser.SendProcessMessage(CefProcessId.Renderer, message2);
Console.WriteLine("Sending myMessage2 to renderer process = {0}", success);
var message3 = CefProcessMessage.Create("myMessage3");
var success2 = browser.SendProcessMessage(CefProcessId.Browser, message3);
Console.WriteLine("Sending myMessage3 to browser process = {0}", success);
return false;
}
protected override void OnLoadEnd(CefBrowser browser, CefFrame frame, int httpStatusCode)
{
if (OnLoadEndEvent != null)
{
OnLoadEndEvent(browser, frame, httpStatusCode);
}
}
public OnGetResourceHandlerEventArgs(string _id, CefBrowser _browser, CefFrame _frame, CefRequest _request)
{
id = _id;
browser = _browser;
frame = _frame;
request = _request;
DelegateRequest = false; //Default do not delegate, allow CEF to handle using network
}
protected override void OnCursorChange( CefBrowser browser, IntPtr cursorHandle )
{
//_uiHelper.PerformInUiThread(() =>
//{
// Cursor cursor = CursorInteropHelper.Create(new SafeFileHandle(cursorHandle, false));
// _owner.Cursor = cursor;
//});
}
public BrowserWrapper()
{
Status = BrowserStatus.Initial;
hasPendingClose = false;
browserClient = null;
browser = null;
}
protected override void OnLoadStart(CefBrowser browser, CefFrame frame)
{
base.OnLoadStart(browser, frame);
var message = CefProcessMessage.Create("SetOverlayAPI");
message.Arguments.SetString(0, frame.Name);
browser.SendProcessMessage(CefProcessId.Renderer, message);
}
protected override bool GetRootScreenRect(CefBrowser browser, ref CefRectangle rect)
{
rect.X = 0;
rect.Y = 0;
rect.Width = this.screenWidth;
rect.Height = this.screenHeight;
return true;
}
protected override bool GetScreenInfo(CefBrowser browser, CefScreenInfo screenInfo)
{
var rect = screenInfo.Rectangle;
this.GetRootScreenRect(browser, ref rect);
screenInfo.Depth = 32;
screenInfo.IsMonochrome = false;
return true;
}
protected override void OnStatusMessage(CefBrowser browser, string value)
{
if (browser == null)
{
API.Instance.Log("Browser null: invalid OnStatusMessage.");
return;
}
API.Instance.Log("Browser {0}: Status message: {1}", browser.Identifier, value);
}
protected override bool OnConsoleMessage(CefBrowser browser, string message, string source, int line)
{
if (browser == null)
{
API.Instance.Log("Browser null: invalid OnConsoleMessage.");
return false;
}
API.Instance.Log("Browser {0}: {1} @{2}{3}", browser.Identifier, message, source, line);
return false;
}
protected override void OnPaint(CefBrowser browser, CefPaintElementType type, CefRectangle[] dirtyRects, IntPtr buffer, int width, int height)
{
if (type != CefPaintElementType.View)
{
// Only want to paint the view
return;
}
this.core.OnPaint(buffer);
}
protected override bool OnConsoleMessage(CefBrowser browser, string message, string source, int line)
{
var consoleArgs = new ConsoleMessageArgs(message, source, line);
if (ConsoleMessage==null)
{
Trace.WriteLine(consoleArgs);
}
ConsoleMessage?.Invoke(this, consoleArgs);
return false;
}
protected override bool OnBeforeNavigation(CefBrowser browser, CefFrame frame, CefRequest request, CefNavigationType navigationType, bool isRedirect)
{
Console.WriteLine("OnBeforeNavigation: Request.Url={0} NavigationType={1} IsRedirect={2}",
request.Url,
navigationType,
isRedirect
);
return false;
}
internal OnQueryEventArgs(CefBrowser _browser, CefFrame _frame, long _queryId, string _request, bool _persistent, CefMessageRouterBrowserSide.Callback _callback)
{
browser = _browser;
frame = _frame;
queryId = _queryId;
request = _request;
persistent = _persistent;
callback = _callback;
Handled = false; //default return value
}
protected override bool OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)
{
if (message.Name == "renderProcessIdRequest")
{
CefProcessMessage response = CefProcessMessage.Create("renderProcessIdResponse");
response.Arguments.SetInt(0, Process.GetCurrentProcess().Id);
browser.SendProcessMessage(CefProcessId.Browser, response);
}
return false;
}
internal void Associate(CefBrowser browser, CefFrame frame, CefV8Context context)
{
var webView = new CefV8_WebView(context,context.GetTaskRunner());
var taskCompletionSource = _TaskCompletionSources.GetOrDefault(frame.Identifier);
if (taskCompletionSource!=null)
{
_TaskCompletionSources.Remove(frame.Identifier);
taskCompletionSource.TrySetResult(webView);
}
_Associated.Add(frame.Identifier, webView);
}
private void Browser_ProcessMessageReceived(Xilium.CefGlue.CefBrowser browser, Xilium.CefGlue.CefProcessId sourceProcess, Xilium.CefGlue.CefProcessMessage message)
{
if (message.Name == "OpenSaveFileDialog")
{
BeginInvoke(new Action(() => { saveFileDialog1.ShowDialog(); }));
}
else
{
this.BeginInvoke(new Action(() =>
{ MessageBox.Show("未知的消息 from Render Process ，消息名字“" + message.Name + "”。"); }));
}
}
protected override bool OnBeforePopup( CefBrowser browser, CefFrame frame, string targetUrl, string targetFrameName, CefPopupFeatures popupFeatures, CefWindowInfo windowInfo, ref CefClient client, CefBrowserSettings settings, ref bool noJavascriptAccess )
{
var e = new BeforePopupEventArgs( frame, targetUrl, targetFrameName, popupFeatures, windowInfo, client, settings,
noJavascriptAccess );
this.owner.OnBeforePopup( e );
client = e.Client;
noJavascriptAccess = e.NoJavascriptAccess;
return e.Handled;
}
public override bool OnQuery(CefBrowser browser, CefFrame frame, long queryId, string request, bool persistent, CefMessageRouterBrowserSide.Callback callback)
{
Debug.WriteLine(DBGPREFIX + "OnQuery called, [" + queryId + " " + (persistent ? "" : "not" + " persistent]: ") + request);
var handler = OnQueryEvent;
if (handler != null)
{
Debug.WriteLine(DBGPREFIX + "OnQuery Delegate");
var e = new OnQueryEventArgs(browser, frame, queryId, request, persistent, callback);
handler(this, e);
return e.Handled;
}
return false;
}
private CefFrame GetFrameByName(CefBrowser browser, string frameName)
{
CefFrame frame = null;
if (frameName == null)
{
frame = browser.GetMainFrame();
}
else
{
frame = browser.GetFrame(frameName);
}
return frame;
}
protected override bool OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)
{
if (message.Name == "renderProcessIdResponse")
{
int renderProcessId = message.Arguments.GetInt(0);
BrowserWrapper browserWrapper;
if (BrowserManager.Instance.TryGetBrowser(
browser.Identifier, out browserWrapper))
{
browserWrapper.UpdateRenderProcessId(renderProcessId);
}
}
return false;
}
protected override bool OnProcessMessageReceived(CefBrowser browser, CefProcessId sourceProcess, CefProcessMessage message)
{
Debug.WriteLine(DBGPREFIX + "OnProcessMessageReceived: " + message.ToString());
var isHandled = _messageRouter.OnProcessMessageReceived(browser, sourceProcess, message);
if (isHandled)
return true;
var handler = OnProcessMessageReceivedEvent;
if (handler != null)
{
Debug.WriteLine(DBGPREFIX + "OnProcessMessageReceived Delegate");
var e = new OnProcessMessageReceivedEventArgs(browser, sourceProcess, message);
handler(this, e);
return e.Handled;
}
return false;
}
protected override void OnPaint(CefBrowser browser, CefPaintElementType type, CefRectangle[] dirtyRects, IntPtr buffer, int width, int height)
{
_logger.Debug("Type: {0} Buffer: {1:X8} Width: {2} Height: {3}", type, buffer, width, height);
foreach (var rect in dirtyRects)
{
_logger.Debug(" DirtyRect: X={0} Y={1} W={2} H={3}", rect.X, rect.Y, rect.Width, rect.Height);
}
if (type == CefPaintElementType.View)
{
_owner.HandleViewPaint(browser, type, dirtyRects, buffer, width, height);
}
else if (type == CefPaintElementType.Popup)
{
_owner.HandlePopupPaint(width, height, dirtyRects, buffer);
}
}
protected override void OnAfterCreated(CefBrowser browser)
{
Debug.WriteLine(DBGPREFIX + "OnAfterCreated");
//Need to be called on ui thread?
//yes
_lvCefControl.InvokeIfRequired(() =>
{
_lvCefControl.Browser = browser;
});
var handler = OnAfterCreatedEvent;
if (handler != null)
{
Debug.WriteLine(DBGPREFIX + "OnAfterCreated Delegate");
var e = new OnAfterCreatedEventArgs(browser);
handler(this, e);
}
}
/// <summary>
/// Called on the UI thread before OnBeforeBrowse in certain limited cases
/// where navigating a new or different browser might be desirable. This
/// includes user-initiated navigation that might open in a special way (e.g.
/// links clicked via middle-click or ctrl + left-click) and certain types of
/// cross-origin navigation initiated from the renderer process (e.g.
/// navigating the top-level frame to/from a file URL). The |browser| and
/// |frame| values represent the source of the navigation. The
/// |target_disposition| value indicates where the user intended to navigate
/// the browser based on standard Chromium behaviors (e.g. current tab,
/// new tab, etc). The |user_gesture| value will be true if the browser
/// navigated via explicit user gesture (e.g. clicking a link) or false if it
/// navigated automatically (e.g. via the DomContentLoaded event). Return true
/// to cancel the navigation or false to allow the navigation to proceed in the
/// source browser's top-level frame.
/// </summary>
protected virtual bool OnOpenUrlFromTab(CefBrowser browser, CefFrame frame, string targetUrl, CefWindowOpenDisposition targetDisposition, bool userGesture)
{
return(false);
}
/// <summary>
/// Returns the hosted browser object.
/// </summary>
public CefBrowser GetBrowser()
{
return(CefBrowser.FromNative(cef_browser_host_t.get_browser(_self)));
}
/// <summary>
/// Called on the IO thread when receiving a network request with a
/// "Set-Cookie" response header value represented by |cookie|. Return true to
/// allow the cookie to be stored or false to block the cookie. The |request|
/// object should not be modified in this callback.
/// </summary>
protected virtual bool CanSetCookie(CefBrowser browser, CefFrame frame, CefRequest request, CefCookie cookie)
{
return(true);
}
/// <summary>
/// Called to retrieve the translation from view coordinates to actual screen
/// coordinates. Return true if the screen coordinates were provided.
/// </summary>
protected virtual bool GetScreenPoint(CefBrowser browser, int viewX, int viewY, ref int screenX, ref int screenY)
{
return(false);
}
/// <summary> /// Called when the browser wants to move or resize the popup widget. |rect| /// contains the new location and size. /// </summary> protected abstract void OnPopupSize(CefBrowser browser, CefRectangle rect);
/// <summary>
/// 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.
/// </summary>
protected virtual void OnPopupShow(CefBrowser browser, bool show)
{
}
/// <summary>
/// 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.
/// </summary>
protected virtual bool DoClose(CefBrowser browser)
{
return(false);
}
/// <summary> /// Called when the browser window's cursor has changed. /// </summary> protected abstract void OnCursorChange(CefBrowser browser, IntPtr cursorHandle);
/// <summary>
/// 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). The |extra_info|
/// parameter provides an opportunity to specify extra information specific
/// to the created popup browser that will be passed to
/// CefRenderProcessHandler::OnBrowserCreated() in the render process.
/// </summary>
protected virtual bool OnBeforePopup(CefBrowser browser, CefFrame frame, string targetUrl, string targetFrameName, CefWindowOpenDisposition targetDisposition, bool userGesture, CefPopupFeatures popupFeatures, CefWindowInfo windowInfo, ref CefClient client, CefBrowserSettings settings, ref CefDictionaryValue extraInfo, ref bool noJavascriptAccess)
{
return(false);
}
/// <summary>
/// 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 (other than GetIdentifier or IsSame) after this callback returns.
/// This callback will be the last notification that references |browser| on
/// the UI thread. Any in-progress network requests associated with |browser|
/// will be aborted when the browser is destroyed, and
/// CefResourceRequestHandler callbacks related to those requests may still
/// arrive on the IO thread after this method is called. See DoClose()
/// documentation for additional usage information.
/// </summary>
protected virtual void OnBeforeClose(CefBrowser browser)
{
}
/// <summary>
/// Called on the browser process UI thread when the render process
/// terminates unexpectedly. |status| indicates how the process
/// terminated.
/// </summary>
protected virtual void OnRenderProcessTerminated(CefBrowser browser, CefTerminationStatus status)
{
}
/// <summary>
/// Called on the UI thread when a client certificate is being requested for
/// authentication. Return false to use the default behavior and automatically
/// select the first certificate available. Return true and call
/// CefSelectClientCertificateCallback::Select either in this method or at a
/// later time to select a certificate. Do not call Select or call it with NULL
/// to continue without using any certificate. |isProxy| indicates whether the
/// host is an HTTPS proxy or the origin server. |host| and |port| contains the
/// hostname and port of the SSL server. |certificates| is the list of
/// certificates to choose from; this list has already been pruned by Chromium
/// so that it only contains certificates from issuers that the server trusts.
/// </summary>
protected virtual bool OnSelectClientCertificate(CefBrowser browser, bool isProxy, string host, int port, CefX509Certificate[] certificates, CefSelectClientCertificateCallback callback)
{
return(false);
}
/// <summary>
/// Called after a new browser is created. This callback will be the first
/// notification that references |browser|.
/// </summary>
protected virtual void OnAfterCreated(CefBrowser browser)
{
}
/// <summary>
/// Called when the user starts dragging content in the web view. Contextual
/// information about the dragged content is supplied by |drag_data|.
/// OS APIs that run a system message loop may be used within the
/// StartDragging call.
/// Return false to abort the drag operation. Don't call any of
/// CefBrowserHost::DragSource*Ended* methods after returning false.
/// Return true to handle the drag operation. Call
/// CefBrowserHost::DragSourceEndedAt and DragSourceSystemDragEnded either
/// synchronously or asynchronously to inform the web view that the drag
/// operation has ended.
/// </summary>
protected virtual bool StartDragging(CefBrowser browser, CefDragData dragData, CefDragOperationsMask allowedOps, int x, int y)
{
return(false);
}
/// <summary>
/// Called on the browser process UI thread when a plugin has crashed.
/// |plugin_path| is the path of the plugin that crashed.
/// </summary>
protected virtual void OnPluginCrashed(CefBrowser browser, string pluginPath)
{
}
/// <summary>
/// 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.
/// </summary>
protected virtual void OnProtocolExecution(CefBrowser browser, string url, out bool allowOSExecution)
{
allowOSExecution = true;
}
/// <summary>
/// Called to retrieve the view rectangle which is relative to screen
/// coordinates. Return true if the rectangle was provided.
/// </summary>
protected virtual bool GetViewRect(CefBrowser browser, ref CefRectangle rect)
{
// TODO: return CefRectangle? (Nullable<CefRectangle>) instead of returning bool?
return(false);
}
/// <summary> /// 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. /// </summary> protected abstract void OnPaint(CefBrowser browser, CefPaintElementType type, CefRectangle[] dirtyRects, IntPtr buffer, int width, int height);
/// <summary> /// Called when the scroll offset has changed. /// </summary> protected abstract void OnScrollOffsetChanged(CefBrowser browser);
/// <summary>
/// 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 to continue the request and call
/// CefRequestCallback::Continue() either in this method or at a later time to
/// grant or deny the request. Return false to cancel the request immediately.
/// </summary>
protected virtual bool OnQuotaRequest(CefBrowser browser, string originUrl, long newSize, CefRequestCallback callback)
{
callback.Continue(true);
return(true);
}
/// <summary>
/// Called when the web view wants to update the mouse cursor during a
/// drag & drop operation. |operation| describes the allowed operation
/// (none, move, copy, link).
/// </summary>
protected virtual void UpdateDragCursor(CefBrowser browser, CefDragOperationsMask operation)
{
}
/// <summary> /// 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. /// </summary> protected abstract bool GetScreenInfo(CefBrowser browser, CefScreenInfo screenInfo);
/// <summary>
/// Called on the UI thread to handle requests for URLs with an invalid
/// SSL certificate. Return true and call CefRequestCallback::Continue() either
/// in this method or at a later time to continue or cancel the request. Return
/// false to cancel the request immediately. If
/// CefSettings.ignore_certificate_errors is set all invalid certificates will
/// be accepted without calling this method.
/// </summary>
protected virtual bool OnCertificateError(CefBrowser browser, CefErrorCode certError, string requestUrl, CefSslInfo sslInfo, CefRequestCallback callback)
{
return(false);
}
/// <summary>
/// Called on the IO thread before sending a network request with a "Cookie"
/// request header. Return true to allow cookies to be included in the network
/// request or false to block cookies. The |request| object should not be
/// modified in this callback.
/// </summary>
protected virtual bool CanGetCookies(CefBrowser browser, CefFrame frame, CefRequest request)
{
return(true);
}
/// <summary>
/// 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.
/// </summary>
protected virtual bool OnBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, bool isRedirect)
{
return(false);
}
/// <summary>
/// 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. |realm| is the realm of the
/// challenge and may be empty. |scheme| is the authentication scheme used,
/// such as "basic" or "digest", and will be empty if the source of the request
/// is an FTP server. Return true to continue the request and call
/// CefAuthCallback::Continue() either in this method or at a later time when
/// the authentication information is available. Return false to cancel the
/// request immediately.
/// </summary>
protected virtual bool GetAuthCredentials(CefBrowser browser, CefFrame frame, bool isProxy, string host, int port, string realm, string scheme, CefAuthCallback callback)
{
return(false);
}
protected override void OnAfterCreated(Xilium.CefGlue.CefBrowser browser)
{
base.OnAfterCreated(browser);
bClient.Created(browser);
}
/// <summary>
/// Called on the browser process UI thread when the render view associated
/// with |browser| is ready to receive/handle IPC messages in the render
/// process.
/// </summary>
protected virtual void OnRenderViewReady(CefBrowser browser)
{
}
/// <summary>
/// Called on the IO thread when a resource load has completed. |request| and
/// |response| represent the request and response respectively and cannot be
/// modified in this callback. |status| indicates the load completion status.
/// |received_content_length| is the number of response bytes actually read.
/// </summary>
protected virtual void OnResourceLoadComplete(CefBrowser browser, CefFrame frame, CefRequest request, CefResponse response, CefUrlRequestStatus status, long receivedContentLength)
{
}