treepanel.js

一个struts和extjs得源码

     * Gets a node in this tree by its id
     * @param {String} id
     * @return {Node}
     */
    getNodeById : function(id){
        return this.nodeHash[id];
    },

    // private
    registerNode : function(node){
        this.nodeHash[node.id] = node;
    },

    // private
    unregisterNode : function(node){
        delete this.nodeHash[node.id];
    },

    // private
    toString : function(){
        return "[Tree"+(this.id?" "+this.id:"")+"]";
    },

    // private
    restrictExpand : function(node){
        var p = node.parentNode;
        if(p){
            if(p.expandedChild && p.expandedChild.parentNode == p){
                p.expandedChild.collapse();
            }
            p.expandedChild = node;
        }
    },

    /**
     * Retrieve an array of checked nodes, or an array of a specific attribute of checked nodes (e.g. "id")
     * @param {String} attribute (optional) Defaults to null (return the actual nodes)
     * @param {TreeNode} startNode (optional) The node to start from, defaults to the root
     * @return {Array}
     */
    getChecked : function(a, startNode){
        startNode = startNode || this.root;
        var r = [];
        var f = function(){
            if(this.attributes.checked){
                r.push(!a ? this : (a == 'id' ? this.id : this.attributes[a]));
            }
        }
        startNode.cascade(f);
        return r;
    },

    /**
     * Returns the container element for this TreePanel.
     * @return {Element} The container element for this TreePanel.
     */
    getEl : function(){
        return this.el;
    },

    /**
     * Returns the default {@link Ext.tree.TreeLoader} for this TreePanel.
     * @return {Ext.tree.TreeLoader} The TreeLoader for this TreePanel.
     */
    getLoader : function(){
        return this.loader;
    },

    /**
     * Expand all nodes
     */
    expandAll : function(){
        this.root.expand(true);
    },

    /**
     * Collapse all nodes
     */
    collapseAll : function(){
        this.root.collapse(true);
    },

    /**
     * Returns the selection model used by this TreePanel.
     * @return {TreeSelectionModel} The selection model used by this TreePanel
     */
    getSelectionModel : function(){
        if(!this.selModel){
            this.selModel = new Ext.tree.DefaultSelectionModel();
        }
        return this.selModel;
    },

    /**
     * Expands a specified path in this TreePanel. A path can be retrieved from a node with {@link Ext.data.Node#getPath}
     * @param {String} path
     * @param {String} attr (optional) The attribute used in the path (see {@link Ext.data.Node#getPath} for more info)
     * @param {Function} callback (optional) The callback to call when the expand is complete. The callback will be called with
     * (bSuccess, oLastNode) where bSuccess is if the expand was successful and oLastNode is the last node that was expanded.
     */
    expandPath : function(path, attr, callback){
        attr = attr || "id";
        var keys = path.split(this.pathSeparator);
        var curNode = this.root;
        if(curNode.attributes[attr] != keys[1]){ // invalid root
            if(callback){
                callback(false, null);
            }
            return;
        }
        var index = 1;
        var f = function(){
            if(++index == keys.length){
                if(callback){
                    callback(true, curNode);
                }
                return;
            }
            var c = curNode.findChild(attr, keys[index]);
            if(!c){
                if(callback){
                    callback(false, curNode);
                }
                return;
            }
            curNode = c;
            c.expand(false, false, f);
        };
        curNode.expand(false, false, f);
    },

    /**
     * Selects the node in this tree at the specified path. A path can be retrieved from a node with {@link Ext.data.Node#getPath}
     * @param {String} path
     * @param {String} attr (optional) The attribute used in the path (see {@link Ext.data.Node#getPath} for more info)
     * @param {Function} callback (optional) The callback to call when the selection is complete. The callback will be called with
     * (bSuccess, oSelNode) where bSuccess is if the selection was successful and oSelNode is the selected node.
     */
    selectPath : function(path, attr, callback){
        attr = attr || "id";
        var keys = path.split(this.pathSeparator);
        var v = keys.pop();
        if(keys.length > 0){
            var f = function(success, node){
                if(success && node){
                    var n = node.findChild(attr, v);
                    if(n){
                        n.select();
                        if(callback){
                            callback(true, n);
                        }
                    }else if(callback){
                        callback(false, n);
                    }
                }else{
                    if(callback){
                        callback(false, n);
                    }
                }
            };
            this.expandPath(keys.join(this.pathSeparator), attr, f);
        }else{
            this.root.select();
            if(callback){
                callback(true, this.root);
            }
        }
    },

    /**
     * Returns the underlying Element for this tree
     * @return {Ext.Element} The Element
     */
    getTreeEl : function(){
        return this.body;
    },

    // private
    onRender : function(ct, position){
        Ext.tree.TreePanel.superclass.onRender.call(this, ct, position);
        this.el.addClass('x-tree');
        this.innerCt = this.body.createChild({tag:"ul",
               cls:"x-tree-root-ct " +
               (this.useArrows ? 'x-tree-arrows' : this.lines ? "x-tree-lines" : "x-tree-no-lines")});
    },

    // private
    initEvents : function(){
        Ext.tree.TreePanel.superclass.initEvents.call(this);

        if(this.containerScroll){
            Ext.dd.ScrollManager.register(this.body);
        }
        if((this.enableDD || this.enableDrop) && !this.dropZone){
           /**
            * The dropZone used by this tree if drop is enabled
            * @type Ext.tree.TreeDropZone
            */
             this.dropZone = new Ext.tree.TreeDropZone(this, this.dropConfig || {
               ddGroup: this.ddGroup || "TreeDD", appendOnly: this.ddAppendOnly === true
           });
        }
        if((this.enableDD || this.enableDrag) && !this.dragZone){
           /**
            * The dragZone used by this tree if drag is enabled
            * @type Ext.tree.TreeDragZone
            */
            this.dragZone = new Ext.tree.TreeDragZone(this, this.dragConfig || {
               ddGroup: this.ddGroup || "TreeDD",
               scroll: this.ddScroll
           });
        }
        this.getSelectionModel().init(this);
    },

    // private
    afterRender : function(){
        Ext.tree.TreePanel.superclass.afterRender.call(this);
        this.root.render();
        if(!this.rootVisible){
            this.root.renderChildren();
        }
    },

    onDestroy : function(){
        if(this.rendered){
            this.body.removeAllListeners();
            Ext.dd.ScrollManager.unregister(this.body);
            if(this.dropZone){
                this.dropZone.unreg();
            }
            if(this.dragZone){
               this.dragZone.unreg();
            }
        }
        this.root.destroy();
        this.nodeHash = null;
        Ext.tree.TreePanel.superclass.onDestroy.call(this);
    }
    
    /** 
     * @cfg {String/Number} activeItem 
     * @hide 
     */
    /** 
     * @cfg {Boolean} autoDestroy 
     * @hide 
     */
    /** 
     * @cfg {Object/String/Function} autoLoad 
     * @hide 
     */
    /** 
     * @cfg {Boolean} autoWidth 
     * @hide 
     */
    /** 
     * @cfg {Boolean/Number} bufferResize 
     * @hide 
     */
    /** 
     * @cfg {String} defaultType 
     * @hide 
     */
    /** 
     * @cfg {Object} defaults 
     * @hide 
     */
    /** 
     * @cfg {Boolean} hideBorders 
     * @hide 
     */
    /** 
     * @cfg {Mixed} items 
     * @hide 
     */
    /** 
     * @cfg {String} layout 
     * @hide 
     */
    /** 
     * @cfg {Object} layoutConfig 
     * @hide 
     */
    /** 
     * @cfg {Boolean} monitorResize 
     * @hide 
     */
    /** 
     * @property items 
     * @hide 
     */
    /** 
     * @method add 
     * @hide 
     */
    /** 
     * @method cascade 
     * @hide 
     */
    /** 
     * @method doLayout 
     * @hide 
     */
    /** 
     * @method find 
     * @hide 
     */
    /** 
     * @method findBy 
     * @hide 
     */
    /** 
     * @method findById 
     * @hide 
     */
    /** 
     * @method findByType 
     * @hide 
     */
    /** 
     * @method getComponent 
     * @hide 
     */
    /** 
     * @method getLayout 
     * @hide 
     */
    /** 
     * @method getUpdater 
     * @hide 
     */
    /** 
     * @method insert 
     * @hide 
     */
    /** 
     * @method load 
     * @hide 
     */
    /** 
     * @method remove 
     * @hide 
     */
    /** 
     * @event add 
     * @hide 
     */
    /** 
     * @event afterLayout 
     * @hide 
     */
    /** 
     * @event beforeadd 
     * @hide 
     */
    /** 
     * @event beforeremove 
     * @hide 
     */
    /** 
     * @event remove 
     * @hide 
     */



    /**
     * @cfg {String} allowDomMove  @hide
     */
    /**
     * @cfg {String} autoEl @hide
     */
    /**
     * @cfg {String} applyTo  @hide
     */
    /**
     * @cfg {String} contentEl  @hide
     */
    /**
     * @cfg {String} disabledClass  @hide
     */
    /**
     * @cfg {String} elements  @hide
     */
    /**
     * @cfg {String} html  @hide
     */
    /**
     * @property disabled
     * @hide
     */
    /**
     * @method applyToMarkup
     * @hide
     */
    /**
     * @method enable
     * @hide
     */
    /**
     * @method disable
     * @hide
     */
    /**
     * @method setDisabled
     * @hide
     */
});

Ext.tree.TreePanel.nodeTypes = {};

Ext.reg('treepanel', Ext.tree.TreePanel);