public/lib/OpenLayers/Layer/WFS.js

   1 /* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
   2  * See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
   3  * text of the license. */
   4 // @require: OpenLayers/Layer/Grid.js
   5 // @require: OpenLayers/Layer/Markers.js
   6 /**
   7 * @class
   8 */
   9 OpenLayers.Layer.WFS = Class.create();
  10 OpenLayers.Layer.WFS.prototype =
  11   Object.extend(new OpenLayers.Layer.Grid(),
  12     Object.extend(new OpenLayers.Layer.Markers(), {
  13
  14     /** @type Object */
  15     featureClass: OpenLayers.Feature.WFS,
  16
  17     /** @final @type hash */
  18     DEFAULT_PARAMS: { service: "WFS",
  19                       version: "1.0.0",
  20                       request: "GetFeature",
  21                       typename: "docpoint"
  22                     },
  23
  24     /**
  25     * @constructor
  26     *
  27     * @param {str} name
  28     * @param {str} url
  29     * @param {hash} params
  30     * @param {Object} featureClass
  31     */
  32     initialize: function(name, url, params, featureClass) {
  33         if (featureClass != null) this.featureClass = featureClass;
  34
  35         var newArguments = new Array();
  36         if (arguments.length > 0) {
  37             //uppercase params
  38             params = OpenLayers.Util.upperCaseObject(params);
  39             newArguments.push(name, url, params);
  40         }
  41         OpenLayers.Layer.Grid.prototype.initialize.apply(this, newArguments);
  42         OpenLayers.Layer.Markers.prototype.initialize.apply(this, newArguments);
  43
  44         if (arguments.length > 0) {
  45             OpenLayers.Util.applyDefaults(
  46                            this.params,
  47                            OpenLayers.Util.upperCaseObject(this.DEFAULT_PARAMS)
  48                            );
  49         }
  50     },
  51
  52
  53     /**
  54      *
  55      */
  56     destroy: function() {
  57         OpenLayers.Layer.Grid.prototype.destroy.apply(this, arguments);
  58         OpenLayers.Layer.Markers.prototype.destroy.apply(this, arguments);
  59     },
  60
  61     /**
  62     * @param {OpenLayers.Bounds} bounds
  63     * @param {Boolean} zoomChanged
  64     */
  65     moveTo: function(bounds, zoomChanged) {
  66         OpenLayers.Layer.Grid.prototype.moveTo.apply(this, arguments);
  67         OpenLayers.Layer.Markers.prototype.moveTo.apply(this, arguments);
  68     },
  69
  70     /** WFS layer is never a base class.
  71      * @type Boolean
  72      */
  73     isBaseLayer: function() {
  74         return false;
  75     },
  76
  77     /**
  78     * @param {String} name
  79     * @param {hash} params
  80     *
  81     * @returns A clone of this OpenLayers.Layer.WMS, with the passed-in
  82     *          parameters merged in.
  83     * @type OpenLayers.Layer.WMS
  84     */
  85     clone: function (name, params) {
  86         var mergedParams = {}
  87         Object.extend(mergedParams, this.params);
  88         Object.extend(mergedParams, params);
  89         var obj = new OpenLayers.Layer.WFS(name, this.url, mergedParams);
  90         obj.setTileSize(this.tileSize);
  91         return obj;
  92     },
  93
  94     /**
  95     * addTile creates a tile, initializes it (via 'draw' in this case), and
  96     * adds it to the layer div.
  97     *
  98     * @param {OpenLayers.Bounds} bounds
  99     *
 100     * @returns The added OpenLayers.Tile.WFS
 101     * @type OpenLayers.Tile.WFS
 102     */
 103     addTile:function(bounds, position) {
 104         url = this.getFullRequestString(
 105                      { BBOX:bounds.toBBOX() });
 106
 107         return new OpenLayers.Tile.WFS(this, position, bounds,
 108                                            url, this.tileSize);
 109     },
 110
 111
 112     /** @final @type String */
 113     CLASS_NAME: "OpenLayers.Layer.WFS"
 114 }
 115 )
 116 );