/*!
 * Ext JS Library 3.3.0
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
/**
 * @class Ext.ux.tree.TreeGrid
 * @extends Ext.tree.TreePanel
 * 
 * @xtype treegrid
 */
Ext.ux.tree.TreeGrid = Ext.extend(Ext.tree.TreePanel, {
    rootVisible : false,
    useArrows : true,
    lines : false,
    borderWidth : Ext.isBorderBox ? 0 : 2, // the combined left/right border for each cell
    cls : 'x-treegrid',

    columnResize : true,
    enableSort : true,
    reserveScrollOffset : true,
    enableHdMenu : true,
    
    columnsText : 'Columns',

    initComponent : function() {
        if(!this.root) {
            this.root = new Ext.tree.AsyncTreeNode({text: 'Root'});
        }
        
        // initialize the loader
        var l = this.loader;
        if(!l){
            l = new Ext.ux.tree.TreeGridLoader({
                dataUrl: this.dataUrl,
                requestMethod: this.requestMethod,
                store: this.store
            });
        }else if(Ext.isObject(l) && !l.load){
            l = new Ext.ux.tree.TreeGridLoader(l);
        }
        this.loader = l;
                            
        Ext.ux.tree.TreeGrid.superclass.initComponent.call(this);                    
        
        this.initColumns();
        
        if(this.enableSort) {
            this.treeGridSorter = new Ext.ux.tree.TreeGridSorter(this, this.enableSort);
        }
        
        if(this.columnResize){
            this.colResizer = new Ext.tree.ColumnResizer(this.columnResize);
            this.colResizer.init(this);
        }
        
        var c = this.columns;
        if(!this.internalTpl){                                
            this.internalTpl = new Ext.XTemplate(
                '
',
                    '
',
                        '
',
                            '',
                            '',
                            '',
                            '',
                            '',
                        '
',
                                '
',
                                     this.enableHdMenu ? '' : '',
                                     '{header}',
                                 '
',
                            '
',
                    '
',
                '
',
                '
',
                    '',
                '
'
            );
        }
        
        if(!this.colgroupTpl) {
            this.colgroupTpl = new Ext.XTemplate(
                ''
            );
        }
    },

    initColumns : function() {
        var cs = this.columns,
            len = cs.length, 
            columns = [],
            i, c;

        for(i = 0; i < len; i++){
            c = cs[i];
            if(!c.isColumn) {
                c.xtype = c.xtype ? (/^tg/.test(c.xtype) ? c.xtype : 'tg' + c.xtype) : 'tgcolumn';
                c = Ext.create(c);
            }
            c.init(this);
            columns.push(c);
            
            if(this.enableSort !== false && c.sortable !== false) {
                c.sortable = true;
                this.enableSort = true;
            }
        }

        this.columns = columns;
    },

    onRender : function(){
        Ext.tree.TreePanel.superclass.onRender.apply(this, arguments);

        this.el.addClass('x-treegrid');
        
        this.outerCt = this.body.createChild({
            cls:'x-tree-root-ct x-treegrid-ct ' + (this.useArrows ? 'x-tree-arrows' : this.lines ? 'x-tree-lines' : 'x-tree-no-lines')
        });
        
        this.internalTpl.overwrite(this.outerCt, {columns: this.columns});
        
        this.mainHd = Ext.get(this.outerCt.dom.firstChild);
        this.innerHd = Ext.get(this.mainHd.dom.firstChild);
        this.innerBody = Ext.get(this.outerCt.dom.lastChild);
        this.innerCt = Ext.get(this.innerBody.dom.firstChild);
        
        this.colgroupTpl.insertFirst(this.innerCt, {columns: this.columns});
        
        if(this.hideHeaders){
            this.el.child('.x-grid3-header').setDisplayed('none');
        }
        else if(this.enableHdMenu !== false){
            this.hmenu = new Ext.menu.Menu({id: this.id + '-hctx'});
            if(this.enableColumnHide !== false){
                this.colMenu = new Ext.menu.Menu({id: this.id + '-hcols-menu'});
                this.colMenu.on({
                    scope: this,
                    beforeshow: this.beforeColMenuShow,
                    itemclick: this.handleHdMenuClick
                });
                this.hmenu.add({
                    itemId:'columns',
                    hideOnClick: false,
                    text: this.columnsText,
                    menu: this.colMenu,
                    iconCls: 'x-cols-icon'
                });
            }
            this.hmenu.on('itemclick', this.handleHdMenuClick, this);
        }
    },

    setRootNode : function(node){
        node.attributes.uiProvider = Ext.ux.tree.TreeGridRootNodeUI;        
        node = Ext.ux.tree.TreeGrid.superclass.setRootNode.call(this, node);
        if(this.innerCt) {
            this.colgroupTpl.insertFirst(this.innerCt, {columns: this.columns});
        }
        return node;
    },
    
    clearInnerCt : function(){
        if(Ext.isIE){
            var dom = this.innerCt.dom;
            while(dom.firstChild){
                dom.removeChild(dom.firstChild);
            }
        }else{
            Ext.ux.tree.TreeGrid.superclass.clearInnerCt.call(this);
        }
    },
    
    initEvents : function() {
        Ext.ux.tree.TreeGrid.superclass.initEvents.apply(this, arguments);

        this.mon(this.innerBody, 'scroll', this.syncScroll, this);
        this.mon(this.innerHd, 'click', this.handleHdDown, this);
        this.mon(this.mainHd, {
            scope: this,
            mouseover: this.handleHdOver,
            mouseout: this.handleHdOut
        });
    },
    
    onResize : function(w, h) {
        Ext.ux.tree.TreeGrid.superclass.onResize.apply(this, arguments);
        
        var bd = this.innerBody.dom;
        var hd = this.innerHd.dom;

        if(!bd){
            return;
        }

        if(Ext.isNumber(h)){
            bd.style.height = this.body.getHeight(true) - hd.offsetHeight + 'px';
        }

        if(Ext.isNumber(w)){                        
            var sw = Ext.num(this.scrollOffset, Ext.getScrollBarWidth());
            if(this.reserveScrollOffset || ((bd.offsetWidth - bd.clientWidth) > 10)){
                this.setScrollOffset(sw);
            }else{
                var me = this;
                setTimeout(function(){
                    me.setScrollOffset(bd.offsetWidth - bd.clientWidth > 10 ? sw : 0);
                }, 10);
            }
        }
    },

    updateColumnWidths : function() {
        var cols = this.columns,
            colCount = cols.length,
            groups = this.outerCt.query('colgroup'),
            groupCount = groups.length,
            c, g, i, j;

        for(i = 0; i 0 && this.columns[index]) {
                this.setColumnVisible(index, !item.checked);
            }     
        }
        
        return true;
    },
    
    setColumnVisible : function(index, visible) {
        this.columns[index].hidden = !visible;        
        this.updateColumnWidths();
    },

    
/**
     * Scrolls the grid to the top
     */
    scrollToTop : function(){
        this.innerBody.dom.scrollTop = 0;
        this.innerBody.dom.scrollLeft = 0;
    },

    // private
    syncScroll : function(){
        this.syncHeaderScroll();
        var mb = this.innerBody.dom;
        this.fireEvent('bodyscroll', mb.scrollLeft, mb.scrollTop);
    },

    // private
    syncHeaderScroll : function(){
        var mb = this.innerBody.dom;
        this.innerHd.dom.scrollLeft = mb.scrollLeft;
        this.innerHd.dom.scrollLeft = mb.scrollLeft; // second time for IE (1/2 time first fails, other browsers ignore)
    },
    
    registerNode : function(n) {
        Ext.ux.tree.TreeGrid.superclass.registerNode.call(this, n);
        if(!n.uiProvider && !n.isRoot && !n.ui.isTreeGridNodeUI) {
            n.ui = new Ext.ux.tree.TreeGridNodeUI(n);
        }
    }
});

Ext.reg('treegrid', Ext.ux.tree.TreeGrid);