source:
trunk/workshop-routing-foss4g/web/OpenLayers/lib/OpenLayers/Filter/FeatureId.js
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1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
2 | * full list of contributors). Published under the Clear BSD license. |
3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
4 | * full text of the license. */ |
5 | |
6 | |
7 | /** |
8 | * @requires OpenLayers/Filter.js |
9 | */ |
10 | |
11 | /** |
12 | * Class: OpenLayers.Filter.FeatureId |
13 | * This class represents a ogc:FeatureId Filter, as being used for rule-based SLD |
14 | * styling |
15 | * |
16 | * Inherits from |
17 | * - <OpenLayers.Filter> |
18 | */ |
19 | OpenLayers.Filter.FeatureId = OpenLayers.Class(OpenLayers.Filter, { |
20 | |
21 | /** |
22 | * APIProperty: fids |
23 | * {Array(String)} Feature Ids to evaluate this rule against. To be passed |
24 | * To be passed inside the params object. |
25 | */ |
26 | fids: null, |
27 | |
28 | /** |
29 | * Constructor: OpenLayers.Filter.FeatureId |
30 | * Creates an ogc:FeatureId rule. |
31 | * |
32 | * Parameters: |
33 | * options - {Object} An optional object with properties to set on the |
34 | * rule |
35 | * |
36 | * Returns: |
37 | * {<OpenLayers.Filter.FeatureId>} |
38 | */ |
39 | initialize: function(options) { |
40 | this.fids = []; |
41 | OpenLayers.Filter.prototype.initialize.apply(this, [options]); |
42 | }, |
43 | |
44 | /** |
45 | * APIMethod: evaluate |
46 | * evaluates this rule for a specific feature |
47 | * |
48 | * Parameters: |
49 | * feature - {<OpenLayers.Feature>} feature to apply the rule to. |
50 | * For vector features, the check is run against the fid, |
51 | * for plain features against the id. |
52 | * |
53 | * Returns: |
54 | * {Boolean} true if the rule applies, false if it does not |
55 | */ |
56 | evaluate: function(feature) { |
57 | for (var i=0, len=this.fids.length; i<len; i++) { |
58 | var fid = feature.fid || feature.id; |
59 | if (fid == this.fids[i]) { |
60 | return true; |
61 | } |
62 | } |
63 | return false; |
64 | }, |
65 | |
66 | /** |
67 | * APIMethod: clone |
68 | * Clones this filter. |
69 | * |
70 | * Returns: |
71 | * {<OpenLayers.Filter.FeatureId>} Clone of this filter. |
72 | */ |
73 | clone: function() { |
74 | var filter = new OpenLayers.Filter.FeatureId(); |
75 | OpenLayers.Util.extend(filter, this); |
76 | filter.fids = this.fids.slice(); |
77 | return filter; |
78 | }, |
79 | |
80 | CLASS_NAME: "OpenLayers.Filter.FeatureId" |
81 | }); |
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