function updateController(brushModel, ecModel, api, payload) {
	        // Do not update controller when drawing.
	        (!payload || payload.$from !== brushModel.id) && this._brushController
	            .setPanels(brushModel.brushTargetManager.makePanelOpts(api))
	            .enableBrush(brushModel.brushOption)
	            .updateCovers(brushModel.areas.slice());
	    }
get date info

@param  {string|number} date date
@return {Object}      info