FilterManager class

The FilterManager class manages the filters to avoid filter conflict between widgets.

AMD Module Require

require(["jimu/FilterManager"], function(FilterManager) { /* code goes here */ });

Constructor

FilterManager has no constructor. Use FilterManager.getInstance() to get the FilterManager instance. Example: require(["jimu/dijit/FilterManager"], function(FilterManager){ var filterManager = FilterManager.getInstance(); ... });

Methods

applyWidgetFilter (layerId, widgetId, expression) Applies a filter to a layer. Return type: Undefined. Parameters: <String> layerId—Required. The ID of the layer where the filter is to be applied. <String> widgetId—Required. The ID of the widget where the filter is to be applied. <String> expression—Required. The filter expression.

getFilterExp (layerId, excludeWidgetId) Gets the filter expressions that have been applied to a layer from all widgets unless excluded. Return type: The filter expressions string. Parameters: <String> layerId—Required. The ID of the layer where the filter is from. <String> excludeWidgetId—Optional. The ID of the widget to exclude from forming the filter expressions.

getWidgetFilter (layerId, widgetId) Gets the filter expression that a widget has applied to a layer. Return type: The filter expression string. Parameters: <String> layerId—Required. The ID of the layer where the filter is from. <String> widgetId—Required. The ID of the widget where the filter is from.