talho/openphin

Ext.ux.maximgb.tg.GridPanel = Ext.extend(Ext.grid.GridPanel, 
{
    /**
     * @cfg {String|Integer} master_column_id Master column id. Master column cells are nested.
     * Master column cell values are used to build breadcrumbs.
     */
    master_column_id : 0,
    
    /**
     * @cfg {Stirng} TreeGrid panel custom class.
     */
    tg_cls : 'ux-maximgb-tg-panel',

    // Private
    initComponent : function()
    {
        this.initComponentPreOverride();
        Ext.ux.maximgb.tg.GridPanel.superclass.initComponent.call(this);
        this.getSelectionModel().on('selectionchange', this.onTreeGridSelectionChange, this);
        this.initComponentPostOverride();
    },
    
    initComponentPreOverride : Ext.emptyFn,
    
    initComponentPostOverride : Ext.emptyFn,
    
    // Private
    onRender : function(ct, position)
    {
        Ext.ux.maximgb.tg.GridPanel.superclass.onRender.call(this, ct, position);
        this.el.addClass(this.tg_cls);
    },

    /**
     * Returns view instance.
     *
     * @access private
     * @return {GridView}
     */
    getView : function()
    {
        if (!this.view) {
            this.view = new Ext.ux.maximgb.tg.GridView(this.viewConfig);
        }
        return this.view;
    },
    
    /**
     * @access private
     */
    onClick : function(e)
    {
        var target = e.getTarget(),
            view = this.getView(),
            row = view.findRowIndex(target),
            store = this.getStore(),
            sm = this.getSelectionModel(), 
            record, record_id, do_default = true;
        
        // Row click
        if (row !== false) {
            if (Ext.fly(target).hasClass('ux-maximgb-tg-elbow-active')) {
                record = store.getAt(row);
                if (store.isExpandedNode(record)) {
                    store.collapseNode(record);
                }
                else {
                    store.expandNode(record);
                }
                do_default = false;
            }
        }

        if (do_default) {
            Ext.ux.maximgb.tg.GridPanel.superclass.onClick.call(this, e);
        }
    },

    /**
     * @access private
     */
    onMouseDown : function(e)
    {
        var target = e.getTarget();

        if (!Ext.fly(target).hasClass('ux-maximgb-tg-elbow-active')) {
            Ext.ux.maximgb.tg.GridPanel.superclass.onMouseDown.call(this, e);
        }
    },
    
    /**
     * @access private
     */
    onTreeGridSelectionChange : function(sm, selection)
    {
        var record, ancestors, store = this.getStore();
        // Row selection model
        if (sm.getSelected) {
            record = sm.getSelected();
            store.setActiveNode(record);
        }
        // Cell selection model
        else if (sm.getSelectedCell && selection) {
            record = selection.record;
            store.setActiveNode(record);
        }

        // Ensuring that selected node is visible.
        if (record) {
            if (!store.isVisibleNode(record)) {
                ancestors = store.getNodeAncestors(record);
                while (ancestors.length > 0) {
                    store.expandNode(ancestors.pop());
                }
            }
        }
    }
});