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# QWebFrame Class Reference
[QtWebKit module]

The QWebFrame class represents a frame in a web page. More...

Inherits QObject.

### Types

- enum RenderLayer { ContentsLayer, ScrollBarLayer, PanIconLayer, AllLayers }

### Methods

- addToJavaScriptWindowObject (self, QString, QObject)
- QUrl baseUrl (self)
- list-of-QWebFrame childFrames (self)
- QSize contentsSize (self)
- QWebElement documentElement (self)
- QVariant evaluateJavaScript (self, QString)
- bool event (self, QEvent)
- QWebElementCollection findAllElements (self, QString)
- QWebElement findFirstElement (self, QString)
- QString frameName (self)
- QRect geometry (self)
- bool hasFocus (self)
- QWebHitTestResult hitTestContent (self, QPoint)
- QIcon icon (self)
- load (self, QUrl)
- load (self, QNetworkRequest, QNetworkAccessManager.Operation operation = QNetworkAccessManager.GetOperation, QByteArray body = QByteArray())
- dict-of-QString-list-of-QString metaData (self)
- QWebPage page (self)
- QWebFrame parentFrame (self)
- QPoint pos (self)
- print (self, QPrinter printer)
- print_ (self, QPrinter)
- render (self, QPainter, QRegion)
- render (self, QPainter)
- render (self, QPainter, RenderLayer, QRegion clip = QRegion())
- QString renderTreeDump (self)
- QUrl requestedUrl (self)
- scroll (self, int, int)
- QRect scrollBarGeometry (self, Qt.Orientation)
- int scrollBarMaximum (self, Qt.Orientation)
- int scrollBarMinimum (self, Qt.Orientation)
- Qt.ScrollBarPolicy scrollBarPolicy (self, Qt.Orientation)
- int scrollBarValue (self, Qt.Orientation)
- QPoint scrollPosition (self)
- QWebSecurityOrigin securityOrigin (self)
- setContent (self, QByteArray, QString mimeType = QString(), QUrl baseUrl = QUrl())
- setFocus (self)
- setHtml (self, QString, QUrl baseUrl = QUrl())
- setScrollBarPolicy (self, Qt.Orientation, Qt.ScrollBarPolicy)
- setScrollBarValue (self, Qt.Orientation, int)
- setScrollPosition (self, QPoint)
- setTextSizeMultiplier (self, float)
- setUrl (self, QUrl)
- setZoomFactor (self, float)
- float textSizeMultiplier (self)
- QString title (self)
- QString toHtml (self)
- QString toPlainText (self)
- QUrl url (self)
- float zoomFactor (self)

### Qt Signals

- void contentsSizeChanged (const QSize&)
- void iconChanged ()
- void initialLayoutCompleted ()
- void javaScriptWindowObjectCleared ()
- void loadFinished (bool)
- void loadStarted ()
- void titleChanged (const QString&)
- void urlChanged (const QUrl&)

## Detailed Description

The QWebFrame class represents a frame in a web page.

QWebFrame represents a frame inside a web page. Each QWebPage object contains at least one frame, the main frame, obtained using QWebPage.mainFrame(). Additional frames will be created for HTML `<frame>` or `<iframe>` elements.

A frame can be loaded using load() or setUrl(). Alternatively, if you have the HTML content readily available, you can use setHtml() instead.

The page() function returns a pointer to the web page object. See Elements of QWebView for an explanation of how web frames are related to a web page and web view.

The QWebFrame class also offers methods to retrieve both the URL currently loaded by the frame (see url()) as well as the URL originally requested to be loaded (see requestedUrl()). These methods make possible the retrieval of the URL before and after a DNS resolution or a redirection occurs during the load process. The requestedUrl() also matches to the URL added to the frame history (QWebHistory) if load is successful.

The title of an HTML frame can be accessed with the title() property. Additionally, a frame may also specify an icon, which can be accessed using the icon() property. If the title or the icon changes, the corresponding titleChanged() and iconChanged() signals will be emitted. The zoomFactor() property can be used to change the overall size of the content displayed in the frame.

QWebFrame objects are created and controlled by the web page. You can connect to the web page's frameCreated() signal to be notified when a new frame is created.

The hitTestContent() function can be used to programmatically examine the contents of a frame.

A QWebFrame can be printed onto a QPrinter using the print_() function. This function is marked as a slot and can be conveniently connected to QPrintPreviewDialog's paintRequested() signal.

See also QWebPage.

## Type Documentation

### QWebFrame.RenderLayer

This enum describes the layers available for rendering using render(). The layers can be OR-ed together from the following list:

Constant | Value | Description
--- | --- | ---
`QWebFrame.ContentsLayer` | `0x10` | The web content of the frame
`QWebFrame.ScrollBarLayer` | `0x20` | The scrollbars of the frame
`QWebFrame.PanIconLayer` | `0x40` | The icon used when panning the frame
`QWebFrame.AllLayers` | `0xff` | Includes all the above layers

## Method Documentation

### QWebFrame.addToJavaScriptWindowObject (self, QString, QObject)

The QObject argument has it's ownership transferred to Qt.

Make object available under name from within the frame's JavaScript context. The object will be inserted as a child of the frame's window object.

Qt properties will be exposed as JavaScript properties and slots as JavaScript methods.

If you want to ensure that your QObjects remain accessible after loading a new URL, you should add them in a slot connected to the javaScriptWindowObjectCleared() signal.

If Javascript is not enabled for this page, then this method does nothing.

The object will never be explicitly deleted by QtWebKit.

### QUrl QWebFrame.baseUrl (self)

### list-of-QWebFrame QWebFrame.childFrames (self)

Returns a list of all frames that are direct children of this frame.

See also parentFrame().

### QSize QWebFrame.contentsSize (self)

### QWebElement QWebFrame.documentElement (self)

Returns the document element of this frame.

The document element provides access to the entire structured content of the frame.

This function was introduced in Qt 4.6.

### QVariant QWebFrame.evaluateJavaScript (self, QString)

This method is also a Qt slot with the C++ signature `QVariant evaluateJavaScript(const QString&)`.

Evaluates the JavaScript defined by scriptSource using this frame as context and returns the result of the last executed statement.

See also addToJavaScriptWindowObject() and javaScriptWindowObjectCleared().

### bool QWebFrame.event (self, QEvent)

Reimplemented from QObject.event().

### QWebElementCollection QWebFrame.findAllElements (self, QString)

Returns a new list of elements matching the given CSS selector selectorQuery. If there are no matching elements, an empty list is returned.

Standard CSS2 selector syntax is used for the query.

This function was introduced in Qt 4.6.

See also QWebElement.findAll().

### QWebElement QWebFrame.findFirstElement (self, QString)

Returns the first element in the frame's document that matches the given CSS selector selectorQuery. If there is no matching element, a null element is returned.

Standard CSS2 selector syntax is used for the query.

This function was introduced in Qt 4.6.

See also QWebElement.findFirst().

### QString QWebFrame.frameName (self)

The name of this frame as defined by the parent frame.

### QRect QWebFrame.geometry (self)

Return the geometry of the frame relative to it's parent frame.

### bool QWebFrame.hasFocus (self)

### QWebHitTestResult QWebFrame.hitTestContent (self, QPoint)

Performs a hit test on the frame contents at the given position pos and returns the hit test result.

### QIcon QWebFrame.icon (self)

### QWebFrame.load (self, QUrl)

Loads url into this frame.

Note: The view remains the same until enough data has arrived to display the new url.

See also setUrl(), setHtml(), and setContent().

### QWebFrame.load (self, QNetworkRequest, QNetworkAccessManager.Operation operation = QNetworkAccessManager.GetOperation, QByteArray body = QByteArray())

Loads a network request, req, into this frame.

Note: The view remains the same until enough data has arrived to display the new url.

### dict-of-QString-list-of-QString QWebFrame.metaData (self)

Returns the meta data in this frame as a QMultiMap

The meta data consists of the name and content attributes of the of the `<meta>` tags in the HTML document.

For example:

     <html>
         <head>
             <meta name="description" content="This document is a tutorial about Qt development">
             <meta name="keywords" content="Qt, WebKit, Programming">
         </head>
         ...
     </html>

Given the above HTML code the metaData() function will return a map with two entries:

Key | Value
--- | ---
"description" | "This document is a tutorial about Qt development"
"keywords" | "Qt, WebKit, Programming"

This function returns a multi map to support multiple meta tags with the same attribute name.

This function was introduced in Qt 4.5.

### QWebPage QWebFrame.page (self)

The web page that contains this frame.

### QWebFrame QWebFrame.parentFrame (self)

Returns the parent frame of this frame, or 0 if the frame is the web pages main frame.

This is equivalent to qobject_cast<QWebFrame*>(frame->parent()).

See also childFrames().

### QPoint QWebFrame.pos (self)

Returns the position of the frame relative to it's parent frame.

### QWebFrame.print (self, QPrinter printer)

This method is also a Qt slot with the C++ signature `void print(QPrinter *) const`.

Prints the frame to the given printer.

See also render().

### QWebFrame.print_ (self, QPrinter)

This method is also a Qt slot with the C++ signature `void print(QPrinter *) const`.

Prints the frame to the given printer.

See also render().

### QWebFrame.render (self, QPainter, QRegion)

Render the frame into painter.

### QWebFrame.render (self, QPainter)

Render the frame into painter clipping to clip.

### QWebFrame.render (self, QPainter, RenderLayer, QRegion clip = QRegion())

Render the layer of the frame using painter clipping to clip.

This function was introduced in Qt 4.6.

See also print_().

### QString QWebFrame.renderTreeDump (self)

Returns a dump of the rendering tree. This is mainly useful for debugging html.

### QUrl QWebFrame.requestedUrl (self)

### QWebFrame.scroll (self, int, int)

Scrolls the frame dx pixels to the right and dy pixels downward. Both dx and dy may be negative.

This function was introduced in Qt 4.5.

See also QWebFrame.scrollPosition.

### QRect QWebFrame.scrollBarGeometry (self, Qt.Orientation)

Returns the geometry for the scrollbar with orientation orientation.

If the scrollbar does not exist an empty rect is returned.

This function was introduced in Qt 4.6.

### int QWebFrame.scrollBarMaximum (self, Qt.Orientation)

Returns the maximum value for the scrollbar with orientation orientation, or 0 if no scrollbar is found for orientation.

See also scrollBarMinimum().

### int QWebFrame.scrollBarMinimum (self, Qt.Orientation)

Returns the minimum value for the scrollbar with orientation orientation.

The minimum value is always 0.

See also scrollBarMaximum().

### Qt.ScrollBarPolicy QWebFrame.scrollBarPolicy (self, Qt.Orientation)

Returns the scrollbar policy for the scrollbar defined by orientation.

See also setScrollBarPolicy().

### int QWebFrame.scrollBarValue (self, Qt.Orientation)

Returns the current value for the scrollbar with orientation orientation, or 0 if no scrollbar is found for orientation.

See also setScrollBarValue(), scrollBarMinimum(), and scrollBarMaximum().

### QPoint QWebFrame.scrollPosition (self)

### QWebSecurityOrigin QWebFrame.securityOrigin (self)

Returns the frame's security origin.

This function was introduced in Qt 4.5.

### QWebFrame.setContent (self, QByteArray, QString mimeType = QString(), QUrl baseUrl = QUrl())

Sets the content of this frame to the specified content data. If the mimeType argument is empty it is currently assumed that the content is HTML but in future versions we may introduce auto-detection.

External objects referenced in the content are located relative to baseUrl.

The data is loaded immediately; external objects are loaded asynchronously.

Note: This method will not affect session or global history for the frame.

See also toHtml() and setHtml().

### QWebFrame.setFocus (self)

Gives keyboard input focus to this frame.

This function was introduced in Qt 4.6.

See also hasFocus().

### QWebFrame.setHtml (self, QString, QUrl baseUrl = QUrl())

Sets the content of this frame to html. baseUrl is optional and used to resolve relative URLs in the document, such as referenced images or stylesheets.

The html is loaded immediately; external objects are loaded asynchronously.

If a script in the html runs longer than the default script timeout (currently 10 seconds), for example due to being blocked by a modal JavaScript alert dialog, this method will return as soon as possible after the timeout and any subsequent html will be loaded asynchronously.

When using this method WebKit assumes that external resources such as JavaScript programs or style sheets are encoded in UTF-8 unless otherwise specified. For example, the encoding of an external script can be specified through the charset attribute of the HTML script tag. It is also possible for the encoding to be specified by web server.

Note: This method will not affect session or global history for the frame.

See also toHtml() and setContent().

### QWebFrame.setScrollBarPolicy (self, Qt.Orientation, Qt.ScrollBarPolicy)

Sets the scrollbar policy for the scrollbar defined by orientation to policy.

See also scrollBarPolicy().

### QWebFrame.setScrollBarValue (self, Qt.Orientation, int)

Sets the current value for the scrollbar with orientation orientation.

The scrollbar forces the value to be within the legal range: minimum <= value <= maximum.

Changing the value also updates the thumb position.

See also scrollBarValue(), scrollBarMinimum(), and scrollBarMaximum().

### QWebFrame.setScrollPosition (self, QPoint)

### QWebFrame.setTextSizeMultiplier (self, float)

Sets the value of the multiplier used to scale the text in a Web frame to the factor specified.

See also textSizeMultiplier().

### QWebFrame.setUrl (self, QUrl)

### QWebFrame.setZoomFactor (self, float)

### float QWebFrame.textSizeMultiplier (self)

Returns the value of the multiplier used to scale the text in a Web frame.

See also setTextSizeMultiplier().

### QString QWebFrame.title (self)

### QString QWebFrame.toHtml (self)

Returns the frame's content as HTML, enclosed in HTML and BODY tags.

See also setHtml() and toPlainText().

### QString QWebFrame.toPlainText (self)

Returns the content of this frame converted to plain text, completely stripped of all HTML formatting.

See also toHtml().

### QUrl QWebFrame.url (self)

### float QWebFrame.zoomFactor (self)

## Qt Signal Documentation

### void contentsSizeChanged (const QSize&)

This is the default overload of this signal.

This signal is emitted when the frame's contents size changes to size.

This function was introduced in Qt 4.6.

See also contentsSize().

### void iconChanged ()

This is the default overload of this signal.

This signal is emitted when the icon ("favicon") associated with the frame has been loaded.

See also icon().

### void initialLayoutCompleted ()

This is the default overload of this signal.

This signal is emitted when the frame is laid out the first time. This is the first time you will see contents displayed on the frame.

Note: A frame can be laid out multiple times.

### void javaScriptWindowObjectCleared ()

This is the default overload of this signal.

This signal is emitted whenever the global window object of the JavaScript environment is cleared, e.g., before starting a new load.

If you intend to add QObjects to a QWebFrame using addToJavaScriptWindowObject(), you should add them in a slot connected to this signal. This ensures that your objects remain accessible when loading new URLs.

### void loadFinished (bool)

This is the default overload of this signal.

This signal is emitted when a load of this frame is finished. ok will indicate whether the load was successful or any error occurred.

This function was introduced in Qt 4.6.

See also loadStarted().

### void loadStarted ()

This is the default overload of this signal.

This signal is emitted when a new load of this frame is started.

This function was introduced in Qt 4.6.

See also loadFinished().

### void titleChanged (const QString&)

This is the default overload of this signal.

This signal is emitted whenever the title of the frame changes. The title string specifies the new title.

See also title().

### void urlChanged (const QUrl&)

This is the default overload of this signal.

This signal is emitted with the URL of the frame when the frame's title is received. The new URL is specified by url.

See also url().