PySide.QtWebKit.QWebPluginFactory class is used to embed custom data types in web pages.
The HTML <object> tag is used to embed arbitrary content into a web page, for example:
<object type="application/x-pdf" data="http://qt.nokia.com/document.pdf" width="500" height="400"></object>
QtWebkit will natively handle the most basic data types like text/html and image/jpeg , but for any advanced or custom data types you will need to provide a handler yourself.
PySide.QtWebKit.QWebPluginFactory is a factory for creating plugins for PySide.QtWebKit.QWebPage , where each plugin provides support for one or more data types. A plugin factory can be installed on a PySide.QtWebKit.QWebPage 使用 QWebPage.setPluginFactory() .
注意
The plugin factory is only used if plugins are enabled through PySide.QtWebKit.QWebSettings .
You provide a PySide.QtWebKit.QWebPluginFactory by implementing the PySide.QtWebKit.QWebPluginFactory.plugins() 和 PySide.QtWebKit.QWebPluginFactory.create() methods. For PySide.QtWebKit.QWebPluginFactory.plugins() it is necessary to describe the plugins the factory can create, including a description and the supported MIME types. The MIME types each plugin can handle should match the ones specified in in the HTML <object> tag of your content.
PySide.QtWebKit.QWebPluginFactory.create() method is called if the requested MIME type is supported. The implementation has to return a new instance of the plugin requested for the given MIME type and the specified URL.
The plugins themselves are subclasses of PySide.QtCore.QObject , but currently only plugins based on either PySide.QtGui.QWidget or PySide.QtGui.QGraphicsWidget are supported.
| 参数： | parent – PySide.QtCore.QObject |
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构造 PySide.QtWebKit.QWebPluginFactory 采用父级 parent .
This enum describes the types of extensions that the plugin factory can support. Before using these extensions, you should verify that the extension is supported by calling PySide.QtWebKit.QWebPluginFactory.supportsExtension() .
Currently there are no extensions.
| 参数： |
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| 返回类型： |
Implemented in subclasses to create a new plugin that can display content of the MIME type given by mimeType . The URL of the content is provided in url . The returned object should be a PySide.QtGui.QWidget .
The HTML object element can provide parameters through the <param> tag. The name and the value attributes of these tags are specified by the argumentNames and argumentValues string lists.
例如：
<object type="application/x-pdf" data="http://qt.nokia.com/document.pdf" width="500" height="400">
<param name="showTableOfContents" value="true" />
<param name="hideThumbnails" value="false" />
</object>
The above object element will result in a call to PySide.QtWebKit.QWebPluginFactory.create() with the following arguments:
| Parameter | 值 |
| mimeType | “application/x-pdf” |
| url | “ http://qt.nokia.com/document.pdf “ |
| argumentNames | “showTableOfContents” “hideThumbnails” |
| argumentVaues | “true” “false” |
注意
Ownership of the returned object will be transferred to the caller.
| 返回类型： |
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This function is reimplemented in subclasses to return a list of supported plugins the factory can create.
注意
Currently, this function is only called when JavaScript programs access the global plugins or mimetypes 对象。
This function is called to refresh the list of supported plugins. It may be called after a new plugin has been installed in the system.
| 参数： | extension – PySide.QtWebKit.QWebPluginFactory.Extension |
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| 返回类型： | PySide.QtCore.bool |
This virtual function returns true if the plugin factory supports extension ；否则 false 被返回。
另请参阅
extension()