Roo/tree/TreeNodeUI.js

/*
 * Based on:
 * Ext JS Library 1.1.1
 * Copyright(c) 2006-2007, Ext JS, LLC.
 *
 * Originally Released Under LGPL - original licence link has changed is not relivant.
 *
 * Fork - LGPL
 * <script type="text/javascript">
 */

/**
 * @class Roo.tree.TreeNodeUI
 * @constructor
 * @param {Object} node The node to render
 * The TreeNode UI implementation is separate from the
 * tree implementation. Unless you are customizing the tree UI,
 * you should never have to use this directly.
 */
Roo.tree.TreeNodeUI = function(node){
    this.node = node;
    this.rendered = false;
    this.animating = false;
    this.emptyIcon = Roo.BLANK_IMAGE_URL;
};

Roo.tree.TreeNodeUI.prototype = {
    removeChild : function(node){
        if(this.rendered){
            this.ctNode.removeChild(node.ui.getEl());
        }
    },

    beforeLoad : function(){
         this.addClass("x-tree-node-loading");
    },

    afterLoad : function(){
         this.removeClass("x-tree-node-loading");
    },

    onTextChange : function(node, text, oldText){
        if(this.rendered){
            this.textNode.innerHTML = text;
        }
    },

    onDisableChange : function(node, state){
        this.disabled = state;
        if(state){
            this.addClass("x-tree-node-disabled");
        }else{
            this.removeClass("x-tree-node-disabled");
        }
    },

    onSelectedChange : function(state){
        if(state){
            this.focus();
            this.addClass("x-tree-selected");
        }else{
            //this.blur();
            this.removeClass("x-tree-selected");
        }
    },

    onMove : function(tree, node, oldParent, newParent, index, refNode){
        this.childIndent = null;
        if(this.rendered){
            var targetNode = newParent.ui.getContainer();
            if(!targetNode){//target not rendered
                this.holder = document.createElement("div");
                this.holder.appendChild(this.wrap);
                return;
            }
            var insertBefore = refNode ? refNode.ui.getEl() : null;
            if(insertBefore){
                targetNode.insertBefore(this.wrap, insertBefore);
            }else{
                targetNode.appendChild(this.wrap);
            }
            this.node.renderIndent(true);
        }
    },

    addClass : function(cls){
        if(this.elNode){
            Roo.fly(this.elNode).addClass(cls);
        }
    },

    removeClass : function(cls){
        if(this.elNode){
            Roo.fly(this.elNode).removeClass(cls);
        }
    },

    remove : function(){
        if(this.rendered){
            this.holder = document.createElement("div");
            this.holder.appendChild(this.wrap);
        }
    },

    fireEvent : function(){
        return this.node.fireEvent.apply(this.node, arguments);
    },

    initEvents : function(){
        this.node.on("move", this.onMove, this);
        var E = Roo.EventManager;
        var a = this.anchor;

        var el = Roo.fly(a, '_treeui');

        if(Roo.isOpera){ // opera render bug ignores the CSS
            el.setStyle("text-decoration", "none");
        }

        el.on("click", this.onClick, this);
        el.on("dblclick", this.onDblClick, this);

        if(this.checkbox){
            Roo.EventManager.on(this.checkbox,
                    Roo.isIE ? 'click' : 'change', this.onCheckChange, this);
        }

        el.on("contextmenu", this.onContextMenu, this);

        var icon = Roo.fly(this.iconNode);
        icon.on("click", this.onClick, this);
        icon.on("dblclick", this.onDblClick, this);
        icon.on("contextmenu", this.onContextMenu, this);
        E.on(this.ecNode, "click", this.ecClick, this, true);

        if(this.node.disabled){
            this.addClass("x-tree-node-disabled");
        }
        if(this.node.hidden){
            this.addClass("x-tree-node-disabled");
        }
        var ot = this.node.getOwnerTree();
        var dd = ot ? (ot.enableDD || ot.enableDrag || ot.enableDrop) : false;
        if(dd && (!this.node.isRoot || ot.rootVisible)){
            Roo.dd.Registry.register(this.elNode, {
                node: this.node,
                handles: this.getDDHandles(),
                isHandle: false
            });
        }
    },

    getDDHandles : function(){
        return [this.iconNode, this.textNode];
    },

    hide : function(){
        if(this.rendered){
            this.wrap.style.display = "none";
        }
    },

    show : function(){
        if(this.rendered){
            this.wrap.style.display = "";
        }
    },

    onContextMenu : function(e){
        if (this.node.hasListener("contextmenu") || this.node.getOwnerTree().hasListener("contextmenu")) {
            e.preventDefault();
            this.focus();
            this.fireEvent("contextmenu", this.node, e);
        }
    },

    onClick : function(e){
        if(this.dropping){
            e.stopEvent();
            return;
        }
        if(this.fireEvent("beforeclick", this.node, e) !== false){
            if(!this.disabled && this.node.attributes.href){
                this.fireEvent("click", this.node, e);
                return;
            }
            e.preventDefault();
            if(this.disabled){
                return;
            }

            if(this.node.attributes.singleClickExpand && !this.animating && this.node.hasChildNodes()){
                this.node.toggle();
            }

            this.fireEvent("click", this.node, e);
        }else{
            e.stopEvent();
        }
    },

    onDblClick : function(e){
        e.preventDefault();
        if(this.disabled){
            return;
        }
        if(this.checkbox){
            this.toggleCheck();
        }
        if(!this.animating && this.node.hasChildNodes()){
            this.node.toggle();
        }
        this.fireEvent("dblclick", this.node, e);
    },

    onCheckChange : function(){
        var checked = this.checkbox.checked;
        this.node.attributes.checked = checked;
        this.fireEvent('checkchange', this.node, checked);
    },

    ecClick : function(e){
        if(!this.animating && this.node.hasChildNodes()){
            this.node.toggle();
        }
    },

    startDrop : function(){
        this.dropping = true;
    },

    // delayed drop so the click event doesn't get fired on a drop
    endDrop : function(){
       setTimeout(function(){
           this.dropping = false;
       }.createDelegate(this), 50);
    },

    expand : function(){
        this.updateExpandIcon();
        this.ctNode.style.display = "";
    },

    focus : function(){
        if(!this.node.preventHScroll){
            try{this.anchor.focus();
            }catch(e){}
        }else if(!Roo.isIE){
            try{
                var noscroll = this.node.getOwnerTree().getTreeEl().dom;
                var l = noscroll.scrollLeft;
                this.anchor.focus();
                noscroll.scrollLeft = l;
            }catch(e){}
        }
    },

    toggleCheck : function(value){
        var cb = this.checkbox;
        if(cb){
            cb.checked = (value === undefined ? !cb.checked : value);
        }
    },

    blur : function(){
        try{
            this.anchor.blur();
        }catch(e){}
    },

    animExpand : function(callback){
        var ct = Roo.get(this.ctNode);
        ct.stopFx();
        if(!this.node.hasChildNodes()){
            this.updateExpandIcon();
            this.ctNode.style.display = "";
            Roo.callback(callback);
            return;
        }
        this.animating = true;
        this.updateExpandIcon();

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

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

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

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

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

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

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

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

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

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

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

    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 = Roo.id(this.textNode);
                Roo.QuickTips.register(a.qtipCfg);
            }
            this.initEvents();
            if(!this.node.expanded){
                this.updateExpandIcon();
            }
        }else{
            if(bulkRender === true) {
                targetNode.appendChild(this.wrap);
            }
        }
    },

    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 t = n.getOwnerTree();
        var txt = t && t.renderer ? t.renderer(n.attributes) : Roo.util.Format.htmlEncode(n.text);
        if (typeof(n.attributes.html) != 'undefined') {
            txt = n.attributes.html;
        }
        var tip = t && t.rendererTip ? t.rendererTip(n.attributes) : txt;
        var cb = typeof a.checked == 'boolean';
        var href = a.href ? a.href : Roo.isGecko ? "" : "#";
        var buf = ['<li class="x-tree-node"><div class="x-tree-node-el ', a.cls,'">',
            '<span class="x-tree-node-indent">',this.indentMarkup,"</span>",
            '<img src="', this.emptyIcon, '" class="x-tree-ec-icon" />',
            '<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" href="',href,'" tabIndex="1" ',
             a.hrefTarget ? ' target="'+a.hrefTarget+'"' : "",
                '><span unselectable="on" qtip="' , tip ,'">',txt,"</span></a></div>",
            '<ul class="x-tree-node-ct" style="display:none;"></ul>',
            "</li>"];

        if(bulkRender !== true && n.nextSibling && n.nextSibling.ui.getEl()){
            this.wrap = Roo.DomHelper.insertHtml("beforeBegin",
                                n.nextSibling.ui.getEl(), buf.join(""));
        }else{
            this.wrap = Roo.DomHelper.insertHtml("beforeEnd", targetNode, buf.join(""));
        }

        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;
    },

    getAnchor : function(){
        return this.anchor;
    },

    getTextEl : function(){
        return this.textNode;
    },

    getIconEl : function(){
        return this.iconNode;
    },

    isChecked : function(){
        return this.checkbox ? this.checkbox.checked : false;
    },

    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){
                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){
                    Roo.fly(this.elNode).replaceClass(c1, c2);
                    this.c1 = c1; this.c2 = c2;
                }
            }else{
                // this changes non-leafs into leafs if they have no children.
                // it's not very rational behaviour..

                if(!this.wasLeaf && this.node.leaf){
                    Roo.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;
            }
        }
    },

    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;
    },

    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();
        }
    }
};

Roo.tree.RootTreeNodeUI = function(){
    Roo.tree.RootTreeNodeUI.superclass.constructor.apply(this, arguments);
};
Roo.extend(Roo.tree.RootTreeNodeUI, Roo.tree.TreeNodeUI, {
    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 : function(){
    },
    expand : function(){
    }
});