A request for showing an alert, a confirmation, or a prompt dialog from within JavaScript to the user. 更多...
导入语句: | import QtWebEngine |
Since: | QtWebEngine 1.4 |
A JavaScriptDialogRequest is passed as an argument of the WebEngineView::javaScriptDialogRequested signal. The request is emitted if JavaScript on the page calls HTML5's Simple Dialogs API, or in response to HTML5's BeforeUnloadEvent . The type of a particular dialog can be checked with the type 特性。
accepted
property of the request indicates whether the request is handled by the user code or the default dialog should be displayed. If you set the
accepted
特性到
true
, make sure to call either
dialogAccept()
or
dialogReject()
afterwards. The JavaScript call causing the request will be blocked until then.
The following code uses a custom dialog to handle the request:
WebEngineView { // ... onJavaScriptDialogRequested: function(request) { request.accepted = true; myDialog.request = request // keep the reference to the request myDialog.accept.connect(request.dialogAccept); myDialog.reject.connect(request.dialogReject); myDialog.visible = true; } // ... }
accepted : bool |
Indicates whether the JavaScript dialog request has been accepted by the signal handler.
If the property is
false
after any signal handlers for
WebEngineView::javaScriptDialogRequested
have been executed, a default dialog will be shown. To prevent this, set
request.accepted
to
true
.
默认为
false
.
[read-only] defaultText : string |
The default prompt text, if the requested dialog is a prompt.
[read-only] message : string |
The message to be shown to the user.
[read-only] securityOrigin : url |
The URL of the security origin.
[read-only] title : string |
A default title for the dialog.
[read-only] type : enumeration |
Returns the type of the requested dialog box. For more information, see HTML5's Simple Dialogs .
常量 | 描述 |
---|---|
JavaScriptDialogRequest.DialogTypeAlert
|
A JavaScript alert dialog. |
JavaScriptDialogRequest.DialogTypeConfirm
|
A JavaScript confirmation dialog. |
JavaScriptDialogRequest.DialogTypePrompt
|
A JavaScript prompt dialog. |
JavaScriptDialogRequest.DialogTypeBeforeUnload
|
The users should be asked if they want to leave the page. |
void dialogAccept ( string text ) |
This function notifies the engine that the user accepted the dialog, providing the text in case of a prompt message box.
void dialogAccept () |
This function notifies the engine that the user accepted the dialog.
void dialogReject () |
This function notifies the engine that the user rejected the dialog.