Setting Properties

There are a number of properties for layers. The properties will effect all the features iwthin a laye.

Seting properties is as easy as calling "TheLayer.SetProperty(CMLayer.FEATURE_STYLE,TheStyle)". This is the same as calling "SetStyle(TheStyle)" as you did in the second tutorial. The format for this function is:

TheLayer.SetProperty(Property,Value); 

The full set of available properties are:

Property	Value
CMLayer.INFO	The HTML content ot be placed in the information window
CMLayer.FEATURE_STYLE	Style to use to paint features
CMLayer.MOUSE_OVER_STYLE	Style to use when the user moves the mouse over a feature
CMLayer.SELECTED_STYLE	Style to to paint a feature when it is selected
CMLayer.ICON_IMAGE	Image to replace the mark for a point with: { TheImage:Image Object, OffsetX:OffsetX, OffsetY:OffsetY };
CMLayer.MARK_TYPE	Type of mark to display for points
CMLayer.MARK_SIZE	Size of marks in pixels
CMLayer.ZOOM_RANGE	Sets the zoom range for a layer to be displayed at. Value is an array formated at [MinZoomLevel,MaxZoomLevel]

 

the styles are all JSON objects containing Canvas style key/value pairs. There is more information on setting properties in the CMLayer portion of the reference material.

You can also set properties to have values pulled from an attribute table. This allows you to customize the properties for each feature in a layer. We'll cover how to change properties for individual layers in JavaScript in tutorial 10. The format for this function is:

TheLayer.SetPropertyAttribute(Property,Value);

You can also set properties for individual features within your files. This can be done with individual features or by providing an entire array of feature properties.

TheLayer.SetFeatureProperty(Property,FeatureIndex,Value);
TheLayer.SetFeatureProperties(Key,FeatureProperties);