| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * $Id: DOM_Attr.hpp 568078 2007-08-21 11:43:25Z amassari $ |
| */ |
| |
| #ifndef DOM_Attr_HEADER_GUARD_ |
| #define DOM_Attr_HEADER_GUARD_ |
| |
| #include <xercesc/util/XercesDefs.hpp> |
| #include "DOM_Node.hpp" |
| #include "DOM_Element.hpp" |
| |
| XERCES_CPP_NAMESPACE_BEGIN |
| |
| |
| class AttrImpl; |
| |
| /** |
| * The <code>DOM_Attr</code> class refers to an attribute of an XML element. |
| * |
| * Typically the allowable values for the |
| * attribute are defined in a documenttype definition. |
| * <p><code>DOM_Attr</code> objects inherit the <code>DOM_Node</code> interface, but |
| * since attributes are not actually child nodes of the elements they are associated with, the |
| * DOM does not consider them part of the document tree. Thus, the |
| * <code>DOM_Node</code> attributes <code>parentNode</code>, |
| * <code>previousSibling</code>, and <code>nextSibling</code> have a null |
| * value for <code>DOM_Attr</code> objects. The DOM takes the view that |
| * attributes are properties of elements rather than having a separate |
| * identity from the elements they are associated with; this should make it |
| * more efficient to implement such features as default attributes associated |
| * with all elements of a given type. Furthermore, attribute nodes |
| * may not be immediate children of a <code>DocumentFragment</code>. However, |
| * they can be associated with <code>Element</code> nodes contained within a |
| * <code>DocumentFragment</code>. In short, users of the DOM |
| * need to be aware that <code>Attr</code> nodes have some things in common |
| * with other objects inheriting the <code>Node</code> interface, but they |
| * also are quite distinct. |
| * |
| */ |
| class DEPRECATED_DOM_EXPORT DOM_Attr: public DOM_Node { |
| |
| public: |
| /** @name Constructors and assignment operators */ |
| //@{ |
| /** |
| * Default constructor for DOM_Attr. The resulting object does not |
| * refer to any Attribute; it will compare == to 0, and is similar |
| * to a null object reference variable in Java. |
| * |
| */ |
| DOM_Attr(); |
| |
| public: |
| |
| /** |
| * Copy constructor. Creates a new <code>DOM_Attr</code> that refers to the |
| * same underlying Attribute as the original. See also DOM_Node::clone(), |
| * which will copy an actual attribute, rather than just creating a new |
| * reference to the original attribute. |
| * |
| * @param other The source attribute reference object |
| */ |
| DOM_Attr(const DOM_Attr &other); |
| |
| /** |
| * Assignment operator |
| * |
| * @param other The source attribute object |
| */ |
| DOM_Attr & operator = (const DOM_Attr &other); |
| |
| /** |
| * Assignment operator. This overloaded variant is provided for |
| * the sole purpose of setting a DOM_Node reference variable to |
| * zero. Nulling out a reference variable in this way will decrement |
| * the reference count on the underlying Node object that the variable |
| * formerly referenced. This effect is normally obtained when reference |
| * variable goes out of scope, but zeroing them can be useful for |
| * global instances, or for local instances that will remain in scope |
| * for an extended time, when the storage belonging to the underlying |
| * node needs to be reclaimed. |
| * |
| * @param val Only a value of 0, or null, is allowed. |
| */ |
| DOM_Attr & operator = (const DOM_NullPtr *val); |
| |
| |
| |
| //@} |
| /** @name Destructor */ |
| //@{ |
| |
| /** |
| * Destructor. The object being destroyed is a reference to the Attribute |
| * "node", not the underlying attribute itself. |
| * |
| */ |
| ~DOM_Attr(); |
| //@} |
| |
| /** @name Getter functions */ |
| //@{ |
| /** |
| * Returns the name of this attribute. |
| */ |
| DOMString getName() const; |
| |
| /** |
| * |
| * Returns true if the attribute received its value explicitly in the |
| * XML document, or if a value was assigned programatically with |
| * the setValue function. Returns false if the attribute value |
| * came from the default value declared in the document's DTD. |
| */ |
| bool getSpecified() const; |
| |
| /** |
| * Returns the value of the attribute. |
| * |
| * The value of the attribute is returned as a string. |
| * Character and general entity references are replaced with their values. |
| */ |
| DOMString getValue() const; |
| |
| //@} |
| /** @name Setter functions */ |
| //@{ |
| /** |
| * Sets the value of the attribute. A text node with the unparsed contents |
| * of the string will be created. |
| * |
| * @param value The value of the DOM attribute to be set |
| */ |
| void setValue(const DOMString &value); |
| //@} |
| |
| /** @name Functions introduced in DOM Level 2. */ |
| //@{ |
| /** |
| * The <code>DOM_Element</code> node this attribute is attached to or |
| * <code>null</code> if this attribute is not in use. |
| * |
| */ |
| DOM_Element getOwnerElement() const; |
| //@} |
| |
| protected: |
| DOM_Attr(AttrImpl *attr); |
| |
| friend class DOM_Element; |
| friend class DOM_Document; |
| |
| }; |
| |
| XERCES_CPP_NAMESPACE_END |
| |
| #endif |
| |
| |