Heron.widgets.LayerTreePanel

Extends
xtype
hr_layertreepanel
class Heron.widgets.LayerTreePanel(config)

A panel designed to hold trees of Map Layers.

Config Options

Configuration properties in addition to those listed for Ext.tree.TreePanel.

contextMenu

Context menu (right-click) for layer nodes, for now instance of Heron.widgets.LayerNodeContextMenu. Default value is null.

layerIcons

Which icons to use for Layers in LayerNodes. Values ‘default’ (use Ext JS standard icons), ‘ bylayertype’ (Layer-type specific icons, e.g. for raster and vector) or ‘none’ (no, i.e. blanc icon). Default value is default’. Used, unless the Layer Nodes (gx_layer entries) are explicitly configured with an ‘iconCls’, ‘cls’ or ‘icon’ config attribute.

lines

Flag for showing tree lines default value is “false”.

ordering

Ordering of layer in the map comparerd to custom layertree default value is “none” (behaviour as in older versions) valid values: ‘TopBottom’, ‘none’

textbaselayers

default value is “Base Layers”. Only valid if not using the ‘hropts’ option

textoverlays

default value is “Overlays”. Only valid if not using the ‘hropts’ option

title

default value is “Layers”.

useMapContext

Use the Heron Map Context (HMC) provided by Heron.App. The HMC defines a LayerTree. Default value is false.

Public Methods

Public methods in addition to those listed for Ext.tree.TreePanel.

LayerTreePanel.selectLayer()
Parameters:record – GeoExt.data.LayerRecord` Layer record. Call with no layer record to remove layer selection.

TODO: change to selectLayers (plural)

Events

Events in addition to those listed for Ext.tree.TreePanel.

beforelayerselectionchange

Fired before the selected set of layers changes. Listeners can return false to stop the selected layers from being changed.

Listeners arguments:

  • layerRecord - GeoExt.data.LayerRecord the record of the selected layer, or null if no layer is selected.
layerselectionchange

Fired when the selected set of layers changes.

Listeners arguments:

  • layerRecord - GeoExt.data.LayerRecord the record of the selected layer, or null if no layer is selected.