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+/***************************************************************************
+ node.h - description
+ -------------------
+ begin : Sun Apr 16 2000
+ copyright : (C) 2000 by Dmitry Poplavsky <pdima@mail.univ.kiev.ua>
+ (C) 2001-2004 Andras Mantia <amantia@kde.org>
+ ***************************************************************************/
+
+/***************************************************************************
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ ***************************************************************************/
+
+#ifndef NODE_H
+#define NODE_H
+
+#include <qptrlist.h>
+#include <qvaluelist.h>
+#include <qmap.h>
+#include <dom/dom_node.h>
+
+class QDomElement;
+class QListViewItem;
+
+class Tag;
+class Node;
+class StructTreeGroup;
+class XMLStructGroup;
+
+struct GroupElement{
+ /*The node which contains the element */
+ Node *node;
+ /* The tag which point to the actual place in the node */
+ Tag *tag;
+ /*The parent node indicating the beginning of a structure */
+ Node *parentNode;
+ bool global;
+ bool deleted;
+ QString type;
+ XMLStructGroup *group; ///<is part of this group
+ };
+
+typedef QValueList<GroupElement*> GroupElementList;
+typedef QMap<QString, GroupElementList> GroupElementMapList;
+
+/**
+ * A Node is a basic unit of a Tree. It keeps track of his parent, his left neighbour, his right neighbour
+ * and his first child.
+ * It contains some functions to navigate through the tree, but some more are located at kafkacommon.h
+ * (and should be moved here...)
+ * It also contains a pointer to a Tag object which contains informations about the contents of the Node.
+ * We use this class to represent the XML/SGML document as a tree ( a DOM like tree) when each Node represent
+ * a part of the document ( A tag, a text, ... see tag.h)
+ * The tree is built with the parser (see parser.h)
+ */
+
+class Node {
+
+public:
+ Node( Node *parent );
+ ~Node();
+
+ /**
+ * Deletes the node. Use this instead of delete node; as it checkes if there
+ * node was really allocated or not and avoid nasty crashes.
+ * @return true - if node existed and is deleted
+ * false - if the node did not exist
+ */
+ static bool deleteNode(Node *node);
+
+ /**
+ * Copy everything from node except prev, next, child, parent, listItem, group, groupTag, which are set to Null
+ * The groupElementsList is cleared.
+ */
+ void operator =(Node* node);
+
+ /** For Kafka copy/paste */
+ void save(QDomElement& element) const;
+ bool load(QDomElement const& element);
+
+ Node *next;
+ Node *prev;
+ Node *parent;
+ Node *child;
+
+ /** Returns the child if available, else the next node, else the next node of the first parent which has one, else 0L.
+ WARNING: it doesn't behave like DOM::Node::nextSibling() which give the next Node, or 0L if there is no next Node */
+ Node *nextSibling();
+ Node *previousSibling();
+ /** Returns the next node, or the parent's next, if next doesn't exists,
+ or the granparent's next, if parent's next doesn't exists, etc. */
+ Node *nextNotChild();
+
+/** DOM like functions cf dom/dom_node.h */
+ QString nodeName();
+ QString nodeValue();
+ void setNodeValue(const QString &value);
+ Node* parentNode() {return parent;}
+ Node* firstChild() {return child;}
+ Node* lastChild();
+ Node* DOMpreviousSibling() {return prev;}
+ Node* DOMnextSibling() {return next;}
+ /**Node* insertBefore(Node *newChild, Node *refChild);
+ Node* replaceChild(Node *newChild, Node *oldChild);
+ Node* removeChild(Node *oldChild);
+ Node* appendChild(Node *newChild);*/
+ bool hasChildNodes() {return child;}
+
+ /** Others functions. */
+ // check if Node has node in its child subtree (and grand-child,...)
+ bool hasForChild(Node *node);
+ void setParent(Node *nodeParent) {parent = nodeParent;}
+ //If Node is of type XmlTag or ScriptTag, return the corresponding XmlTagEnd if available
+ Node *getClosingNode();
+ //If Node is of type XmlTagEnd, return the corresponding XmlTag or ScriptTag if available
+ Node *getOpeningNode();
+
+ /** The Node link skipping Empty Nodes. */
+ //Returns the first next non-Empty Node
+ Node *nextNE();
+ //Returns the first prev non-Empty Node
+ Node *prevNE();
+ //Returns the first non-Empty child
+ Node *firstChildNE();
+ //Returns the last non-Empty child
+ Node *lastChildNE();
+
+/**
+ * The main problem manipulating the default links prev/next/parent/child is that we often want
+ * to manipulate only the "significant" Nodes e.g. XmlTag, Text, ScriptNode, like in a DOM::Node tree.
+ * These functions, prefixed with "S" which stands for "simplified" or "significant", will only return
+ * and manipulate XmlTag, Text and ScriptNode.
+ */
+ //Returns the first significant previous sibling.
+ Node *SPrev();
+ //Returns the first significant next sibling.
+ Node *SNext();
+ //Returns the first significant child.
+ Node *SFirstChild();
+ //Returns the last significant child.
+ Node *SLastChild();
+ void detachNode();
+
+
+
+ int size();
+
+//set/get the corresponding DOM::Node of this node.
+//See more informations about rootNode/leafNode below.
+ DOM::Node* rootNode() {return m_rootNode;}
+ DOM::Node* leafNode() { return m_leafNode;}
+ void setRootNode(DOM::Node *rootNode) {m_rootNode = rootNode;}
+ void setLeafNode(DOM::Node *leafNode) {m_leafNode = leafNode;}
+ Node* _closingNode;
+
+ /**
+ * The contents of the Node is inside the Tag. Should _never_ be null.
+ */
+ Tag *tag;
+
+ QValueList<QListViewItem *> listItems; ///<points to the listview items which represents this node in the structure tree
+ QListViewItem *mainListItem; ///< the main listview item (from under the root node) associated with this node
+ bool closesPrevious; //this node "closes" the tag from previous node
+ bool opened;
+ bool removeAll; //set to false if you don't want to remove the "next" and "child" when deleting the node.
+ bool insideSpecial; //true if the node is part of a special area
+ bool specialInsideXml; //< true if the node is a special area defined inside a tag, like the PHP in <a href="<? echo $a ?>">
+ QString fileName; //the node is in this file. If empty, it's in the current document
+ QValueList<GroupElement*> m_groupElements; ///< all the group elements pointing to this node
+
+private:
+ /**
+ * For VPL use.
+ * Usually for a XmlTag or Text Node there is one corresponding DOM::Node. But sdmetimes there are more
+ * e.g. in the DOM::Node tree the TABLE DOM::Node require the TBODY DOM::Node even if not necessary according
+ * to the specs. So m_rootNode points to the TABLE DOM::Node and m_leafNode points to the TBODY DOM::Node.
+ */
+ DOM::Node *m_rootNode, *m_leafNode;
+};
+
+#endif