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/*
* Copyright (C) 2015 The Qt Company Ltd.
* Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (c) 2012 Hewlett-Packard Development Company, L.P.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this program; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
// The documentation in this file was imported from QtWebKit and is thus constrained
// by its LGPL license.
/*!
\qmltype WebEngineView
\instantiates QQuickWebEngineView
\inqmlmodule QtWebEngine
\since QtWebEngine 1.0
\brief A WebEngineView renders web content within a QML application.
The WebEngineView type enables QML applications to render regions of dynamic web content. It
may share the screen with other QML types, such as a TabView, or fill the screen, as specified
within the QML application.
\section1 Rendering to OpenGL Surface
When using a QQuickRenderControl to render a Qt Quick user interface to an OpenGL surface, the
WebEngineView type is not rendered correctly. The web engine view attempts to use a global
OpenGL context created by \l QtWebEngine::initialize(), but there is no public API for accessing
that context in order to share it with the \c QQuickRenderControl context.
To have the web engine view rendered correctly, it is possible to manually create a new
offscreen context that is shared with the \c QQuickRenderControl and to call the non-public
function \c qt_gl_set_global_share_context(), rather than calling \c initialize().
If \c initialize() is called after setting a global context, it will do nothing.
*/
/*!
\qmlmethod void WebEngineView::goBack()
Go backward within the browser's session history, if possible.
This function is equivalent to the \c{window.history.back()} DOM method.
\sa canGoBack
*/
/*!
\qmlmethod void WebEngineView::goForward()
Go forward within the browser's session history, if possible.
This function is equivalent to the \c{window.history.forward()} DOM method.
*/
/*!
\qmlmethod void WebEngineView::goBackOrForward(int offset)
\since QtWebEngine 1.1
If \a offset is positive, goes forward the specified number of offset
pages in the current session history. If offset is negative, it goes
back. If the offset is invalid, the page is not changed.
\sa goBack(), goForward()
*/
/*!
\qmlmethod void WebEngineView::stop()
Stops loading the current page.
*/
/*!
\qmlmethod void WebEngineView::reload()
Reloads the current page. This function is equivalent to the
\c{window.location.reload()} DOM method.
\sa reloadAndBypassCache()
*/
/*!
\qmlmethod void WebEngineView::reloadAndBypassCache()
\since QtWebEngine 1.1
Reloads the current page, ignoring any cached content.
\sa reload()
*/
/*!
\qmlproperty url WebEngineView::url
The location of the currently displayed HTML page. This writable
property offers the main interface to load a page into a web view.
It functions the same as the \c{window.location} DOM property.
\sa loadHtml()
*/
/*!
\qmlproperty url WebEngineView::icon
\readonly
The location of the currently displayed web site icon,
also known as favicon or shortcut icon. This read-only URL corresponds to
the image used within a mobile browser application to represent a
bookmarked page on the device's home screen.
The following snippet uses the \c{icon} property to build an \c{Image}
component:
\qml
Image {
id: appIcon
source: webView.icon != "" ? webView.icon : "fallbackFavIcon.png";
// ...
}
\endqml
*/
/*!
\qmlproperty int WebEngineView::loadProgress
\readonly
The amount of data from the page that has been loaded, expressed
as an integer percentage in the range from \c{0} to \c{100}.
*/
/*!
\qmlproperty bool WebEngineView::canGoBack
\readonly
Returns \c{true} if there are prior session history entries, \c{false}
otherwise.
*/
/*!
\qmlproperty bool WebEngineView::canGoForward
\readonly
Returns \c{true} if there are subsequent session history entries,
\c{false} otherwise.
*/
/*!
\qmlproperty bool WebEngineView::loading
\readonly
Returns \c{true} if the HTML page is currently loading, \c{false} otherwise.
*/
/*!
\qmlproperty string WebEngineView::title
\readonly
The title of the currently displayed HTML page. This is a
read-only value that reflects the contents of the \c{<title>} tag.
*/
/*!
\qmlproperty bool WebEngineView::isFullScreen
\since QtWebEngine 1.1
\readonly
Returns \c{true} if the web view is in fullscreen mode, \c{false} otherwise.
\sa fullScreenRequested(), fullScreenCancelled()
*/
/*!
\qmlproperty WebEngineHistory WebEngineView::navigationHistory
\since QtWebEngine 1.1
\readonly
The navigation history of the current view.
\sa WebEngineHistory
*/
/*!
\qmlproperty QQmlWebChannel WebEngineView::webChannel
\since QtWebEngine 1.1
The web channel instance used by this view.
This channel is automatically using the internal QtWebEngine transport mechanism over Chromium IPC,
and exposed in the javascript context of the page it is rendering as \c qt.webChannelTransport.
This transport object is used when instantiating the JavaScript counterpart of QWebChannel using
the \l{Qt WebChannel JavaScript API}.
\note The view does not take ownership for an assigned webChannel object.
*/
/*!
\qmlproperty WebEngineProfile WebEngineView::profile
\since QtWebEngine 1.1
The current profile used for the view.
\sa WebEngineProfile
*/
/*!
\qmlproperty WebEngineSettings WebEngineView::settings
\readonly
\since QtWebEngine 1.1
Settings used by this view.
\sa WebEngineSettings
*/
/*!
\qmlproperty list<WebEngineScript> WebEngineView::userScripts
\readonly
\since QtWebEngine 1.1
List of script objects attached to the view.
*/
/*!
\qmlproperty real WebEngineView::zoomFactor
\since QtWebEngine 1.1
Zoom factor for the view. Valid values are within the range from \c{0.25}
to \c{5.0}. The default factor is \c{1.0}.
*/
/*!
\qmlmethod void WebEngineView::loadHtml(string html, url baseUrl)
Loads the specified \a html as the content of the web view.
This method offers a lower-level alternative to the \c{url} property,
which references HTML pages via URL.
External objects, such as stylesheets or images referenced in the HTML
document, should be located relative to \a baseUrl. For example, if \a html
is retrieved from \c http://www.example.com/documents/overview.html, which
is the base URL, then an image referenced with the relative URL, \c diagram.png,
should be at \c{http://www.example.com/documents/diagram.png}.
\sa url
*/
/*!
\qmlmethod void WebEngineView::runJavaScript(string script, variant callback)
Runs the specified \a script in the content of the web view.
In case a callback function is provided, it will be invoked after the script
finishes running.
\code
runJavaScript("document.title", function(result) { console.log(result); });
\endcode
The script will run in the same \e world as other scripts that are
part of the loaded site.
\warning Do not execute lengthy routines in the callback function, because it might block the
rendering of the web content.
See WebEngineView::userScripts for an alternative API to inject scripts.
*/
/*!
\qmlmethod void WebEngineView::findText(string subString)
\since QtWebEngine 1.1
Finds the specified string, \a subString, in the page.
To clear the selection, just pass an empty string.
*/
/*!
\qmlmethod void WebEngineView::findText(string subString, FindFlags options)
\since QtWebEngine 1.1
Finds the specified string, \a subString, in the page, using the given \a options.
To clear the selection, just pass an empty string.
\code
findText("Qt", WebEngineView.FindBackward | WebEngineView.FindCaseSensitively);
\endcode
*/
/*!
\qmlmethod void WebEngineView::findText(string subString, FindFlags options, variant resultCallback)
\since QtWebEngine 1.1
Finds the specified string, \a subString, in the page, using the given \a options.
To clear the selection, just pass an empty string.
The \a resultCallback must take a boolean parameter. It will be called with
a value of true if the \a subString was found; otherwise the callback value
will be false.
\code
findText("Qt", WebEngineView.FindCaseSensitively, function(success) {
if (success)
console.log("Qt was found!");
});
\endcode
*/
/*!
\qmlmethod void WebEngineView::grantFeaturePermission(url securityOrigin, Feature feature, bool granted)
\since QtWebEngine 1.1
Sets or unsets the permission, depending on \a granted, for the web site
identified by \a securityOrigin to use \a feature.
\sa featurePermissionRequested()
*/
/*!
\qmlmethod void WebEngineView::fullScreenCancelled()
\since QtWebEngine 1.1
Immediately sets \c{isFullScreen} property to \c{false}. It can be used to notify the
browser engine when the windowing system forces the application to leave fullscreen mode.
\qml
ApplicationWindow {
onVisibilityChanged: {
if (webEngineView.isFullScreen && visibility != Window.FullScreen)
webEngineView.fullScreenCancelled()
}
WebEngineView {
id: webEngineView
// ...
}
}
\endqml
\sa isFullScreen, fullScreenRequested()
*/
/*!
\qmlmethod void WebEngineView::setActiveFocusOnPress(bool arg)
\since QtWebEngine 1.2
Sets active focus to a clicked web engine view if \a arg is \c true. By setting it to \c false,
a web engine view can be used to create a UI element that should not get focus. This can be
useful in a hybrid UI.
\sa activeFocusOnPressChanged()
*/
/*!
\qmlmethod void WebEngineView::triggerWebAction(WebAction action)
\since QtWebEngine 1.2
Triggers the web action \a action.
\sa WebAction
*/
/*!
\qmlsignal WebEngineView::featurePermissionRequested(url securityOrigin, Feature feature)
\since QtWebEngine 1.1
This signal is emitted when the web site identified by \a securityOrigin requests
to make use of the resource or device identified by \a feature.
\sa grantFeaturePermission()
*/
/*!
\qmlsignal WebEngineView::loadingChanged(loadRequest)
This signal is emitted when a page load begins, ends, or fails.
The corresponding handler is \c onLoadingChanged.
When handling the signal with \c onLoadingChanged, various read-only
parameters are available on the \a loadRequest:
\table
\header
\li Property
\li Description
\row
\li url
\li The location of the resource that is loading.
\row
\li status
\li The \l{LoadStatus}{load status} of the page.
\row
\li errorString
\li The description of load error.
\row
\li errorCode
\li The HTTP error code.
\row
\li errorDomain
\li The high-level \l{ErrorDomain}{error type}.
\endtable
\sa loading, LoadStatus, ErrorDomain
*/
/*!
\qmlsignal WebEngineView::certificateError(error)
\since QtWebEngine 1.1
This signal is emitted when an invalid certificate error is raised while loading a given request.
The certificate error can be rejected by calling WebEngineCertificateError::rejectCertificate,
which will stop loading the request.
The certificate error can be ignored by calling
WebEngineCertificateError::ignoreCertificateError, which will resume loading the request.
It is possible to defer the decision of rejecting the given certificate by calling
WebEngineCertificateError::defer, which is useful when waiting for user input.
By default, the invalid certificate will be automatically rejected.
The corresponding handler is \c onCertificateError.
\sa WebEngineCertificateError
*/
/*!
\qmlsignal WebEngineView::linkHovered(hoveredUrl)
Within a mouse-driven interface, this signal is emitted when a mouse
pointer passes over a link, corresponding to the \c{mouseover} DOM
event. This event may also occur in touch interfaces for \c{mouseover}
events that are not cancelled with \c{preventDefault()}. \a{hoveredUrl}
provides the link's location.
The corresponding handler is \c onLinkHovered.
*/
/*!
\qmlsignal WebEngineView::javaScriptConsoleMessage(JavaScriptConsoleMessageLevel level, message, lineNumber, sourceID)
This signal is emitted when a JavaScript program tries to print a \a message to the web browser's console.
For example, in case of evaluation errors the source URL may be provided in \a sourceID as well
as the \a lineNumber.
\a level indicates the severity of the event that triggered the message, that is, whether it
was triggered by an error or a less severe event.
The corresponding handler is \c onJavaScriptConsoleMessage. If no handler is specified,
the view will log the messages into a \c js \l{QLoggingCategory}{logging category}.
\sa{Console Logging}
*/
/*!
\qmlsignal WebEngineView::newViewRequested(request)
\since QtWebEngine 1.1
This signal is emitted when a page load is requested to happen in a separate
web engine view. This can either be because the current page requested it explicitly
through a JavaScript call to \c window.open, or because the user clicked on a link
while holding Shift, Ctrl, or a built-in combination that triggers the page to open
in a new window.
If this signal is not handled, the requested load will fail.
An example implementation:
\snippet snippets/qtwebengine_webengineview_newviewrequested.qml 0
The corresponding handler is \c onNewViewRequested.
\sa WebEngineNewViewRequest, NewViewDestination, {WebEngine Quick Nano Browser}
*/
/*!
\qmlsignal WebEngineView::fullScreenRequested(WebEngineFullScreenRequest request)
\since QtWebEngine 1.1
This signal is emitted when the web page requests fullscreen mode through the
JavaScript API.
The corresponding handler is \c onFullScreenRequested.
\sa WebEngineFullScreenRequest, isFullScreen
*/
/*!
\qmlsignal WebEngineView::activeFocusOnPressChanged(bool)
\since QtWebEngine 1.2
This signal is emitted when the ability of the web engine view to get focus when clicked
changes.
\sa setActiveFocusOnPress()
*/
/*!
\qmlsignal WebEngineView::backgroundColorChanged()
\since QtWebEngine 1.2
This signal is emitted when the web engine view background color changes.
*/
/*!
\qmlsignal WebEngineView::renderProcessTerminated(RenderProcessTerminationStatus terminationStatus, int exitCode)
\since QtWebEngine 1.2
This signal is emitted when the render process is terminated with a non-zero exit status.
\a terminationStatus is the termination status of the process and \a exitCode is the status code
with which the process terminated.
\sa RenderProcessTerminationStatus
*/
/*!
\qmlsignal WebEngineView::windowCloseRequested()
\since QtWebEngine 1.2
This signal is emitted whenever the page requests the web browser window to be closed,
for example through the JavaScript \c{window.close()} call.
The corresponding handler is \c onWindowCloseRequested.
*/
/*!
\qmlproperty enumeration WebEngineView::ErrorDomain
Describes various high-level error types:
\value WebEngineView::NoErrorDomain
\value WebEngineView::InternalErrorDomain
Content fails to be interpreted by Qt WebEngine.
\value WebEngineView::ConnectionErrorDomain
Error results from faulty network connection.
\value WebEngineView::CertificateErrorDomain
Error related to the SSL/TLS certficate.
\value WebEngineView::HttpErrorDomain
Error related to the HTTP connection.
\value WebEngineView::FtpErrorDomain
Error related to the FTP connection.
\value WebEngineView::DnsErrorDomain
Error related to the DNS connection.
*/
/*!
\qmlproperty enumeration WebEngineView::JavaScriptConsoleMessageLevel
Indicates the severity of a JavaScript console message:
\value InfoMessageLevel
Message is purely informative and can safely be ignored.
\value WarningMessageLevel
Message indicates there might be a problem that may need attention.
\value ErrorMessageLevel
Message indicates there has been an error.
*/
/*!
\qmlproperty enumeration WebEngineView::LoadStatus
Reflects a page's load status:
\value LoadStartedStatus
Page is currently loading.
\value LoadSucceededStatus
Page has successfully loaded, and is not currently loading.
\value LoadFailedStatus
Page has failed to load, and is not currently loading.
*/
/*!
\qmlproperty enumeration WebEngineView::NewViewDestination
Describes how to open a new view:
\value WebEngineView::NewViewInWindow
In a separate Window.
\value WebEngineView::NewViewInTab
In a tab of the same window.
\value WebEngineView::NewViewInDialog
In a Window without a tab bar, toolbar, or URL bar.
\value WebEngineView::NewViewInBackgroundTab
In a tab of the same window, without hiding the currently visible web engine view.
\sa WebEngineNewViewRequest::destination
*/
/*!
\qmlproperty enumeration WebEngineView::FindFlags
Describes the options available to the findText() function. The options
can be OR-ed together from the following list:
\value FindBackward Searches backwards instead of forwards.
\value FindCaseSensitively By default findText() works case insensitive. Specifying
this option changes the behavior to a case sensitive find operation.
\sa findText()
*/
/*!
\qmlproperty enumeration WebEngineView::RenderProcessTerminationStatus
\since QtWebEngine 1.2
Describes the status with which the render process terminated:
\value NormalTerminationStatus
The render process terminated normally.
\value AbnormalTerminationStatus
The render process terminated with a non-zero exit status.
\value CrashedTerminationStatus
The render process crashed, for example because of a segmentation fault.
\value KilledTerminationStatus
The render process was killed, for example by \c SIGKILL or task manager kill.
*/
/*!
\qmlproperty enumeration WebEngineView::WebAction
\since QtWebEngine 1.2
Describes the types of action that can be performed on a web page:
\value NoWebAction
No action is triggered.
\value Back
Navigate back in the history of navigated links.
\value Forward
Navigate forward in the history of navigated links.
\value Stop
Stop loading the current page.
\value Reload
Reload the current page.
\value ReloadAndBypassCache
Reload the current page, but do not use any local cache.
\value Cut
Cut the content currently selected into the clipboard.
\value Copy
Copy the content currently selected into the clipboard.
\value Paste
Paste content from the clipboard.
\value Undo
Undo the last editing action.
\value Redo
Redo the last editing action.
\value SelectAll
Select all content.
\value PasteAndMatchStyle
Paste content from the clipboard with current style.
\value OpenLinkInThisWindow
Open the current link in the current window. (Added in Qt 5.6)
\value OpenLinkInNewWindow
Open the current link in a new window. (Added in Qt 5.6)
\value OpenLinkInNewTab
Open the current link in a new tab. (Added in Qt 5.6)
\value CopyLinkToClipboard
Copy the current link to the clipboard. (Added in Qt 5.6)
\value CopyImageToClipboard
Copy the clicked image to the clipboard. (Added in Qt 5.6)
\value CopyImageUrlToClipboard
Copy the clicked image's URL to the clipboard. (Added in Qt 5.6)
\value CopyMediaUrlToClipboard
Copy the hovered audio or video's URL to the clipboard. (Added in Qt 5.6)
\value ToggleMediaControls
Toggle between showing and hiding the controls for the hovered audio or video element.
(Added in Qt 5.6)
\value ToggleMediaLoop
Toggle whether the hovered audio or video should loop on completetion or not.
(Added in Qt 5.6)
\value ToggleMediaPlayPause
Toggle the play/pause state of the hovered audio or video element. (Added in Qt 5.6)
\value ToggleMediaMute
Mute or unmute the hovered audio or video element. (Added in Qt 5.6)
\value DownloadLinkToDisk
Download the current link to the disk. (Added in Qt 5.6)
\value DownloadImageToDisk
Download the highlighted image to the disk. (Added in Qt 5.6)
\value DownloadMediaToDisk
Download the hovered audio or video to the disk. (Added in Qt 5.6)
\value InspectElement
Trigger any attached Web Inspector to inspect the highlighed element.
(Added in Qt 5.6)
\value ExitFullScreen
Exit the fullscreen mode. (Added in Qt 5.6)
\value SavePage
Save the current web page to disk. (Added in Qt 5.7)
\omitvalue WebActionCount
*/
/*!
\qmlproperty enumeration WebEngineView::Feature
Describes the platform feature access categories that the user may be asked to grant or deny
access to:
\value Geolocation
Location hardware or service.
\value MediaAudioCapture
Audio capture devices, such as microphones.
\value MediaVideoCapture
Video devices, such as cameras.
\value MediaAudioVideoCapture
Both audio and video capture devices.
\sa featurePermissionRequested(), grantFeaturePermission()
*/
/*!
\qmltype WebEngineFullScreenRequest
\instantiates QQuickWebEngineFullScreenRequest
\inqmlmodule QtWebEngine
\since QtWebEngine 1.1
\brief A utility type for the WebEngineView::fullScreenRequested() signal.
\sa WebEngineView::fullScreenRequested()
*/
/*!
\qmlproperty bool WebEngineFullScreenRequest::toggleOn
\since QtWebEngine 1.1
\readonly
Returns \c{true} if the application should toggle fullscreen mode on, \c{false} otherwise.
\sa accept()
*/
/*!
\qmlmethod void WebEngineFullScreenRequest::accept()
\since QtWebEngine 1.1
Call this method to accept the fullscreen request. It sets the WebEngineView::isFullScreen
property to be equal to toggleOn.
\qml
ApplicationWindow {
id: window
WebEngineView {
onFullScreenRequested: {
if (request.toggleOn)
window.showFullScreen()
else
window.showNormal()
request.accept()
}
}
}
\endqml
\sa toggleOn
*/
/*!
\qmlproperty bool WebEngineView::audioMuted
\brief The state of whether the current page audio is muted.
\since QtWebEngine 1.3
*/
/*!
\qmlsignal void WebEngineView::audioMutedChanged(bool muted)
\since QtWebEngine 1.3
This signal is emitted when the page's audio is (un)muted using setAudioMuted method.
\note Not to be confused with a specific HTML5 audio / video element being muted.
*/
/*!
\qmlmethod bool WebEngineView::wasRecentlyAudible()
\since QtWebEngine 1.3
\sa wasRecentlyAudibleChanged()
Returns the current page's audible state (audio was recently played, or not).
*/
/*!
\qmlsignal void WebEngineView::wasRecentlyAudibleChanged(bool wasRecentlyAudible)
\since QtWebEngine 1.3
This signal is emitted when the page's audible state is changed, due to audio
being played or stopped.
\note The signal is also emitted when calling the setAudioMuted method.
Also if the audio is paused, this signal is emitted with an approximate \b{2 second
delay}, from the moment the audio is paused.
*/
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