text: Ext.define('Admin.view.dashboard.DashboardController', {
      extend: 'Ext.app.ViewController',
      alias: 'controller.dashboard',
  
      requires: [
          'Ext.util.TaskRunner'
      ],
  
      onRefreshToggle: function(tool, e, owner) {
          var me = this,
              store=this.getViewModel().getStore('dashboardfulllinechartstore'),
              items=Ext.Array.from(store && store.getData().items),
              num_items=items.length;
  
          if (tool.toggleValue){
              me.clearChartUpdates(owner);
          } else {
              if (num_items) {
                  me.chartTaskRunner  = me.chartTaskRunner || Ext.create('Ext.util.TaskRunner');
                  me.chartTaskRunner.start({
                      run : function () {
                          this.last_x += this.last_x - this.second_last_x;
                          var first = this.items[0].data;
                          this.store.removeAt(0);
                          this.store.add({xvalue: first.xvalue, y1value: first.y1value, y2value: first.y2value});
                          this.count++;
                      },
                      store : store,
                      count : 0,
                      items : items,
                      last_x : items[num_items -1].data.xvalue,
                      second_last_x : items[num_items -2].data.xvalue,
                      interval : 200
                  });
              }
          }
  
          // change the toggle value
          tool.toggleValue = !tool.toggleValue;
      },
  
      clearChartUpdates : function() {
          this.chartTaskRunner = Ext.destroy(this.chartTaskRunner);
      },
      
      onDestroy: function () {
          this.clearChartUpdates();
          this.callParent();
      },
      
      onHideView: function () {
          this.clearChartUpdates();
      }
  });
  