• PySide 模块
  • PySide.QtXml
  • 内容表表

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    QDomAttr

    概要

    函数

    详细描述

    PySide.QtXml.QDomAttr class represents one attribute of a PySide.QtXml.QDomElement .

    For example, the following piece of XML produces an element with no children, but two attributes:

    <link href="http://qtsoftware.com" color="red" />
    									

    You can access the attributes of an element with code like this:

    e = # some QDomElement...
    #...
    a = e.attributeNode("href")
    print a.value()                         # prints "http://qtsoftware.com"
    a.setValue("http://doc.trolltech.com")  # change the node's attribute
    a2 = e.attributeNode("href")
    print a2.value()                        # prints "http://doc.trolltech.com"
    									

    This example also shows that changing an attribute received from an element changes the attribute of the element. If you do not want to change the value of the element's attribute you must use PySide.QtXml.QDomNode.cloneNode() to get an independent copy of the attribute.

    PySide.QtXml.QDomAttr can return the PySide.QtXml.QDomAttr.name() and PySide.QtXml.QDomAttr.value() of an attribute. An attribute's value is set with PySide.QtXml.QDomAttr.setValue() 。若 PySide.QtXml.QDomAttr.specified() returns true the value was set with PySide.QtXml.QDomAttr.setValue() . The node this attribute is attached to (if any) is returned by PySide.QtXml.QDomAttr.ownerElement() .

    For further information about the Document Object Model see http://www.w3.org/TR/REC-DOM-Level-1/ and http://www.w3.org/TR/DOM-Level-2-Core/ . For a more general introduction of the DOM implementation see the PySide.QtXml.QDomDocument 文档编制。

    class PySide.QtXml. QDomAttr
    class PySide.QtXml. QDomAttr ( x )
    参数: x PySide.QtXml.QDomAttr

    Constructs an empty attribute.

    构造副本为 x .

    The data of the copy is shared (shallow copy): modifying one node will also change the other. If you want to make a deep copy, use PySide.QtXml.QDomNode.cloneNode() .

    PySide.QtXml.QDomAttr. name ( )
    返回类型: unicode

    Returns the attribute's name.

    PySide.QtXml.QDomAttr. ownerElement ( )
    返回类型: PySide.QtXml.QDomElement

    Returns the element node this attribute is attached to or a null node if this attribute is not attached to any element.

    PySide.QtXml.QDomAttr. setValue ( arg__1 )
    参数: arg__1 – unicode

    Sets the attribute's value to v .

    PySide.QtXml.QDomAttr. specified ( )
    返回类型: PySide.QtCore.bool

    Returns true if the attribute has been set by the user with PySide.QtXml.QDomAttr.setValue() . Returns false if the value hasn't been specified or set.

    PySide.QtXml.QDomAttr. value ( )
    返回类型: unicode

    Returns the value of the attribute or an empty string if the attribute has not been specified.