treenodeui.js

最强的js界面,超前卫的显示方式 把AJAX运用得淋漓尽致。

    // private
    animExpand : function(callback){
        var ct = Ext.get(this.ctNode);
        ct.stopFx();
        if(!this.node.hasChildNodes()){
            this.updateExpandIcon();
            this.ctNode.style.display = "";
            Ext.callback(callback);
            return;
        }
        this.animating = true;
        this.updateExpandIcon();
        
        ct.slideIn('t', {
           callback : function(){
               this.animating = false;
               Ext.callback(callback);
            },
            scope: this,
            duration: this.node.ownerTree.duration || .25
        });
    },

    // private
    highlight : function(){
        var tree = this.node.getOwnerTree();
        Ext.fly(this.wrap).highlight(
            tree.hlColor || "C3DAF9",
            {endColor: tree.hlBaseColor}
        );
    },

    // private
    collapse : function(){
        this.updateExpandIcon();
        this.ctNode.style.display = "none";
    },

    // private
    animCollapse : function(callback){
        var ct = Ext.get(this.ctNode);
        ct.enableDisplayMode('block');
        ct.stopFx();

        this.animating = true;
        this.updateExpandIcon();

        ct.slideOut('t', {
            callback : function(){
               this.animating = false;
               Ext.callback(callback);
            },
            scope: this,
            duration: this.node.ownerTree.duration || .25
        });
    },

    // private
    getContainer : function(){
        return this.ctNode;  
    },

    // private
    getEl : function(){
        return this.wrap;  
    },

    // private
    appendDDGhost : function(ghostNode){
        ghostNode.appendChild(this.elNode.cloneNode(true));
    },

    // private
    getDDRepairXY : function(){
        return Ext.lib.Dom.getXY(this.iconNode);
    },

    // private
    onRender : function(){
        this.render();    
    },

    // private
    render : function(bulkRender){
        var n = this.node, a = n.attributes;
        var targetNode = n.parentNode ? 
              n.parentNode.ui.getContainer() : n.ownerTree.innerCt.dom;
        
        if(!this.rendered){
            this.rendered = true;

            this.renderElements(n, a, targetNode, bulkRender);

            if(a.qtip){
               if(this.textNode.setAttributeNS){
                   this.textNode.setAttributeNS("ext", "qtip", a.qtip);
                   if(a.qtipTitle){
                       this.textNode.setAttributeNS("ext", "qtitle", a.qtipTitle);
                   }
               }else{
                   this.textNode.setAttribute("ext:qtip", a.qtip);
                   if(a.qtipTitle){
                       this.textNode.setAttribute("ext:qtitle", a.qtipTitle);
                   }
               } 
            }else if(a.qtipCfg){
                a.qtipCfg.target = Ext.id(this.textNode);
                Ext.QuickTips.register(a.qtipCfg);
            }
            this.initEvents();
            if(!this.node.expanded){
                this.updateExpandIcon(true);
            }
        }else{
            if(bulkRender === true) {
                targetNode.appendChild(this.wrap);
            }
        }
    },

    // private
    renderElements : function(n, a, targetNode, bulkRender){
        // add some indent caching, this helps performance when rendering a large tree
        this.indentMarkup = n.parentNode ? n.parentNode.ui.getChildIndent() : '';

        var cb = typeof a.checked == 'boolean';

        var href = a.href ? a.href : Ext.isGecko ? "" : "#";
        var buf = ['<li class="x-tree-node"><div ext:tree-node-id="',n.id,'" class="x-tree-node-el x-tree-node-leaf x-unselectable ', a.cls,'" unselectable="on">',
            '<span class="x-tree-node-indent">',this.indentMarkup,"</span>",
            '<img src="', this.emptyIcon, '" class="x-tree-ec-icon x-tree-elbow" />',
            '<img src="', a.icon || this.emptyIcon, '" class="x-tree-node-icon',(a.icon ? " x-tree-node-inline-icon" : ""),(a.iconCls ? " "+a.iconCls : ""),'" unselectable="on" />',
            cb ? ('<input class="x-tree-node-cb" type="checkbox" ' + (a.checked ? 'checked="checked" />' : '/>')) : '',
            '<a hidefocus="on" class="x-tree-node-anchor" href="',href,'" tabIndex="1" ',
             a.hrefTarget ? ' target="'+a.hrefTarget+'"' : "", '><span unselectable="on">',n.text,"</span></a></div>",
            '<ul class="x-tree-node-ct" style="display:none;"></ul>',
            "</li>"].join('');

        var nel;
        if(bulkRender !== true && n.nextSibling && (nel = n.nextSibling.ui.getEl())){
            this.wrap = Ext.DomHelper.insertHtml("beforeBegin", nel, buf);
        }else{
            this.wrap = Ext.DomHelper.insertHtml("beforeEnd", targetNode, buf);
        }
        
        this.elNode = this.wrap.childNodes[0];
        this.ctNode = this.wrap.childNodes[1];
        var cs = this.elNode.childNodes;
        this.indentNode = cs[0];
        this.ecNode = cs[1];
        this.iconNode = cs[2];
        var index = 3;
        if(cb){
            this.checkbox = cs[3];
            index++;
        }
        this.anchor = cs[index];
        this.textNode = cs[index].firstChild;
    },

/**
 * Returns the &lt;a> element that provides focus for the node's UI.
 * @return {HtmlElement} The DOM anchor element.
 */
    getAnchor : function(){
        return this.anchor;
    },
    
/**
 * Returns the text node.
 * @return {HtmlNode} The DOM text node.
 */
    getTextEl : function(){
        return this.textNode;
    },
    
/**
 * Returns the icon &lt;img> element.
 * @return {HtmlElement} The DOM image element.
 */
    getIconEl : function(){
        return this.iconNode;
    },

/**
 * Returns the checked status of the node. If the node was rendered with no
 * checkbox, it returns false.
 * @return {Boolean} The checked flag.
 */
    isChecked : function(){
        return this.checkbox ? this.checkbox.checked : false; 
    },

    // private
    updateExpandIcon : function(){
        if(this.rendered){
            var n = this.node, c1, c2;
            var cls = n.isLast() ? "x-tree-elbow-end" : "x-tree-elbow";
            var hasChild = n.hasChildNodes();
            if(hasChild || n.attributes.expandable){
                if(n.expanded){
                    cls += "-minus";
                    c1 = "x-tree-node-collapsed";
                    c2 = "x-tree-node-expanded";
                }else{
                    cls += "-plus";
                    c1 = "x-tree-node-expanded";
                    c2 = "x-tree-node-collapsed";
                }
                if(this.wasLeaf){
                    this.removeClass("x-tree-node-leaf");
                    this.wasLeaf = false;
                }
                if(this.c1 != c1 || this.c2 != c2){
                    Ext.fly(this.elNode).replaceClass(c1, c2);
                    this.c1 = c1; this.c2 = c2;
                }
            }else{
                if(!this.wasLeaf){
                    Ext.fly(this.elNode).replaceClass("x-tree-node-expanded", "x-tree-node-leaf");
                    delete this.c1;
                    delete this.c2;
                    this.wasLeaf = true;
                }
            }
            var ecc = "x-tree-ec-icon "+cls;
            if(this.ecc != ecc){
                this.ecNode.className = ecc;
                this.ecc = ecc;
            }
        }
    },

    // private
    getChildIndent : function(){
        if(!this.childIndent){
            var buf = [];
            var p = this.node;
            while(p){
                if(!p.isRoot || (p.isRoot && p.ownerTree.rootVisible)){
                    if(!p.isLast()) {
                        buf.unshift('<img src="'+this.emptyIcon+'" class="x-tree-elbow-line" />');
                    } else {
                        buf.unshift('<img src="'+this.emptyIcon+'" class="x-tree-icon" />');
                    }
                }
                p = p.parentNode;
            }
            this.childIndent = buf.join("");
        }
        return this.childIndent;
    },

    // private
    renderIndent : function(){
        if(this.rendered){
            var indent = "";
            var p = this.node.parentNode;
            if(p){
                indent = p.ui.getChildIndent();
            }
            if(this.indentMarkup != indent){ // don't rerender if not required
                this.indentNode.innerHTML = indent;
                this.indentMarkup = indent;
            }
            this.updateExpandIcon();
        }
    },

    destroy : function(){
        if(this.elNode){
            Ext.dd.Registry.unregister(this.elNode.id);
        }
        delete this.elNode;
        delete this.ctNode;
        delete this.indentNode;
        delete this.ecNode;
        delete this.iconNode;
        delete this.checkbox;
        delete this.anchor;
        delete this.textNode;
        Ext.removeNode(this.ctNode);
    }
};

/**
 * @class Ext.tree.RootTreeNodeUI
 * This class provides the default UI implementation for <b>root</b> Ext TreeNodes.
 * The RootTreeNode UI implementation allows customizing the appearance of the root tree node.<br>
 * <p>
 * If you are customizing the Tree's user interface, you
 * may need to extend this class, but you should never need to instantiate this class.<br>
 */
Ext.tree.RootTreeNodeUI = Ext.extend(Ext.tree.TreeNodeUI, {
    // private
    render : function(){
        if(!this.rendered){
            var targetNode = this.node.ownerTree.innerCt.dom;
            this.node.expanded = true;
            targetNode.innerHTML = '<div class="x-tree-root-node"></div>';
            this.wrap = this.ctNode = targetNode.firstChild;
        }
    },
    collapse : Ext.emptyFn,
    expand : Ext.emptyFn
});