Tree control tool class to convert tree objects and webfxtree/webfxtreeitem

/**
* Author: crazy_rain
* Date: 2007-2-7
* Time: 01:35:43 pm
* Introduction: tree control that converts tree objects and webfxtree/webfxtreeitem
*/

Public class tree {
/**
* Parent node of the tree
*/
Private tree parent;
/**
* Subnodes of the tree
*/
Private tree child;
/**
* Brother node of the tree
*/
Private tree brother;
/**
* Title displayed on the tree
*/
Private string label;
/**
* Js script triggered when you click the menu
*/
Private string script;
/**
* Define the ID component of the JS variable corresponding to the object
*/
Private int variableid = count ++;

/**
* Variable counters
*/
Private Static int COUNT = 0;

/**
* Tree node JS variable naming prefix
*/
Public static string prefix = "Node _";

/**
* Whether the tree contains only folders (whether this tree contains only folders)
*/
Public static Boolean only_folder = false;

/**
* Default constructor
*/
Private tree (){
}

/**
* Retrieve an empty tree
*
* @ Return tree
*/
Public static tree getemptytree (){
Return new tree ();
}

/**
* Construct a tree control and initialize the actions triggered by the text and clicks displayed above
*
* @ Param label the text displayed on the tree control
* @ Param script the action triggered when you click the tree control
*/
Public tree (string label, string script ){
This. Label = label;
This. Script = script;
}

/**
* Construct a tree control and initialize the text displayed above
*
* @ Param label the text displayed on the tree control
*/
Public tree (string label ){
This. Label = label;
}

/**
* Determine whether the current node is the root node.
*
* @ Return Boolean returns true if the root node is used.
*/
Public Boolean isroot (){
Return null = This. parent;
}

/**
* Get the variable name defined in the tree
*
* @ Return refers to the variable name defined in the tree.
*/
Private string variable (){
If (this. Parent = NULL)
Return "root ";
Return prefix + this. variableid;
}

/**
* Generate the JavaScript code corresponding to the tree control tree
*
* @ Param tree the tree control object to be generated for JS Code
* @ Return JS return the JS Code of the tree control represented by the generated tree
*/
Public static string generatejs (TREE tree ){
Stringbuffer buffer = new stringbuffer ();
If (tree. isroot ()){
// Is root, generate Root
Buffer. append (generateroot (tree ));
} Else {
// Not root, generate item
Buffer. append (generateitem (tree ));
}
If (tree. Child! = NULL) {// has child
Buffer. append (generatejs (tree. Child ));
}
If (tree. Brother! = NULL) {// has brother
Buffer. append (generatejs (tree. Brother ));
}
Return buffer. tostring ();
}

/**
* Obtain the JS Code that generates the tree control.
*
* @ Return JS can generate the JS Code of the tree control represented by this object
*/
Public String gettree (){
Return generatejs (this) + "/ndocument. Write (Root );";
}

/**
* The root of the Spanning Tree
*
* @ Param tree root node
* @ Return root: generate the Js of the root.
*/
Private Static string generateroot (TREE tree ){
String root = "Var root = new webfxtree (/" "+ tree. Label +"/");/N ";
If (only_folder ){
Root + = "root. setbehavior ('explorer ');/N ";
} Else {
Root + = "root. setbehavior ('classic ');/N ";
}
Return root;
}

/**
* Generate a tree node
*
* @ Param tree Node object
* @ Return JS Code of the treeitem Tree node
*/
Private Static string generateitem (TREE tree ){
String treeitem = "/N"
+ "Var" + prefix + tree. variableid + "= new webfxtreeitem (/" "+ tree. Label + "/"";
If (null = tree. Script ){
Treeitem + = ");";
} Else {
Treeitem + = ",/" "+ tree. Script + "/");";
}
Treeitem + = "/N" + tree. Parent. Variable () + ". Add (" + tree. Variable () + ");";
Return treeitem;
}

/**
* Add a subnode to the current node
*
* @ Param child the child node to be added
* @ Return child the added subnode
*/
Public tree addchild (tree child ){
If (this. Child! = NULL ){
// Has child, add the given child as the younger brother of the elder child
Tree elder = This. Child;
Return elder. addbrother (child );
} Else {
// Has no child, add this as the first child
This. Child = child;
Child. Parent = this;
}

Return child;
}

/**
* Add a subnode
*
* @ Param label the name displayed on the subnode
* @ Param script the action triggered when a subnode is clicked
* @ Return the subtree node added to the tree
*/
Public tree addchild (string label, string script ){
Tree son = new tree (Label, script );
Return addchild (son );
}

/**
* Add a subnode
*
* @ Param label the name displayed on the subnode
* @ Return child the subtree node added
*/
Public tree addchild (string label ){
Return addchild (Label, null );
}

/**
* Add the sibling node of the current Tree node
*
* @ Param younger the sibling node to be added
* @ Return the sibling node added to the tree
*/
Public tree addbrother (tree younger ){
If (isroot ()){
// If this is the root, add the given node as brother
Return addchild (younger );
}
Tree elder = this;
// Get the youngest brother
While (elder. Brother! = NULL ){
Elder = elder. brother;
}
// Add the younger as the yongest brother
Elder. Brother = younger;
Younger. Parent = elder. parent;
Return younger;

}

/**
* Add a sibling node to the current node
*
* @ Param label the text displayed on the sibling Node
* @ Param script the action triggered when a sibling node is clicked
* @ Return the sibling node added to the tree
*/
Public tree addbrother (string label, string script ){
Tree younger = new tree (Label, script );
Return addbrother (younger );
}

/**
* Add a sibling node to the current node
*
* @ Param label the text displayed on the sibling Node
* @ Return the sibling node added to the tree
*/
Public tree addbrother (string label ){
Return addbrother (Label, null );
}

/**
* Returns the final root node of the current node.
*
* @ Return the final root node of the current node
*/
Public tree getroot (){
TREE tree = this;
While (tree. parent! = NULL ){
Tree = tree. parent;
}
Return tree;
}

/**
* Get the action triggered when you click the tree control.
*
* @ Return script the action triggered when you click the tree control.
*/
Public String getscript (){
Return script;
}

/**
* Set the action triggered when you click the tree control.
*
* @ Param script the action to be set
*/
Public void setscript (string script ){
This. Script = script;
}

/**
* Get the text displayed on the tree control
*
* @ Return label the text displayed on the tree control
*/
Public String getlabel (){
Return label;
}

/**
* Set the text displayed on the tree control
*
* @ Param label the text to be displayed
*/
Public void setlabel (string label ){
This. Label = label;
}

Public String tostring (){
Return this. label;
}
}