Say I have an event handler in my custom widget that handles a map click and executes an identify task. Within the event handler function and also the callback function for the identify.execute function I would like to reference the widget. Using the "this" keyword doesn't give the widget, it gives the event object or the window object. The code below shows how I'm doing this, but I think this is not the right way.
_handleMapClick: function (event) {
var identifyTask = new IdentifyTask(url);
var identifyParams = new IdentifyParameters();
var layerQuery = new Query();
identifyParams.tolerance = 3;
identifyParams.returnGeometry = true;
identifyParams.layerIds = [159];
identifyParams.layerOption = IdentifyParameters.LAYER_OPTION_VISIBLE;
identifyParams.width = landIdWidget.map.width;
identifyParams.height = landIdWidget.map.height;
identifyParams.geometry = event.mapPoint;
identifyParams.mapExtent = landIdWidget.map.extent;
identifyTask.execute(identifyParams, function (response) {
layerQuery.where = "ID = " + parId;
deferred = landIdWidget.that._myFeatureLayer.selectFeatures(layerQuery,
FeatureLayer.SELECTION_NEW, function (selected) {
landIdWidget.that._showParcelInfo(selected);
});
}
}
});
}
