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Viewing changes to gis/dhis-gis-geostat/mfbase/openlayers/lib/OpenLayers/Control/DrawFeature.js

  • Committer: larshelge at gmail
  • Date: 2009-03-03 16:46:36 UTC
  • Revision ID: larshelge@gmail.com-20090303164636-2sjlrquo7ib1gf7r
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gis/dhis-gis-geostat/mfbase/openlayers/lib/OpenLayers/Control/DrawFeature.js
 
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/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
 
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 * license.  See http://svn.openlayers.org/trunk/openlayers/license.txt for the
 
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 * full text of the license. */
 
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/**
 
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 * @requires OpenLayers/Control.js
 
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 * @requires OpenLayers/Feature/Vector.js
 
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 */
 
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/**
 
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 * Class: OpenLayers.Control.DrawFeature
 
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 * Draws features on a vector layer when active.
 
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 *
 
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 * Inherits from:
 
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 *  - <OpenLayers.Control>
 
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 */
 
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OpenLayers.Control.DrawFeature = OpenLayers.Class(OpenLayers.Control, {
 
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    /**
 
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     * Property: layer
 
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     * {<OpenLayers.Layer.Vector>}
 
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     */
 
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    layer: null,
 
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    /**
 
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     * Property: callbacks
 
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     * {Object} The functions that are sent to the handler for callback
 
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     */
 
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    callbacks: null,
 
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    /**
 
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     * Constant: EVENT_TYPES
 
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     *
 
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     * Supported event types:
 
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     *  - *featureadded* Triggered when a feature is added
 
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     */
 
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    EVENT_TYPES: ["featureadded"],
 
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    /**
 
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     * APIProperty: featureAdded
 
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     * {Function} Called after each feature is added
 
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     */
 
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    featureAdded: function() {},
 
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    /**
 
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     * APIProperty: handlerOptions
 
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     * {Object} Used to set non-default properties on the control's handler
 
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     */
 
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    handlerOptions: null,
 
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    /**
 
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     * Constructor: OpenLayers.Control.DrawFeature
 
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     * 
 
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     * Parameters:
 
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     * layer - {<OpenLayers.Layer.Vector>} 
 
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     * handler - {<OpenLayers.Handler>} 
 
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     * options - {Object} 
 
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     */
 
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    initialize: function(layer, handler, options) {
 
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        // concatenate events specific to vector with those from the base
 
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        this.EVENT_TYPES =
 
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            OpenLayers.Control.DrawFeature.prototype.EVENT_TYPES.concat(
 
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            OpenLayers.Control.prototype.EVENT_TYPES
 
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        );
 
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        OpenLayers.Control.prototype.initialize.apply(this, [options]);
 
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        this.callbacks = OpenLayers.Util.extend({done: this.drawFeature},
 
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                                                this.callbacks);
 
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        this.layer = layer;
 
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        this.handler = new handler(this, this.callbacks, this.handlerOptions);
 
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    },
 
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    /**
 
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     * Method: drawFeature
 
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     */
 
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    drawFeature: function(geometry) {
 
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        var feature = new OpenLayers.Feature.Vector(geometry);
 
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        this.layer.addFeatures([feature]);
 
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        this.featureAdded(feature);
 
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        this.events.triggerEvent("featureadded",{feature : feature});
 
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    },
 
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    CLASS_NAME: "OpenLayers.Control.DrawFeature"
 
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});