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Adding OpenLayers.Strategy.Fixed: A simple strategy that requests features once and never requests new data. r=elemoine, (Closes #1664)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@7707 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Frédéric Junod
2008-08-05 11:55:24 +00:00
parent 4be8c169d4
commit 39201a0427
4 changed files with 99 additions and 0 deletions
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1
lib/OpenLayers.js
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@@ -181,6 +181,7 @@
"OpenLayers/Renderer/VML.js",
"OpenLayers/Layer/Vector.js",
"OpenLayers/Strategy.js",
"OpenLayers/Strategy/Fixed.js",
"OpenLayers/Protocol.js",
"OpenLayers/Layer/PointTrack.js",
"OpenLayers/Layer/GML.js",

63
lib/OpenLayers/Strategy/Fixed.js Normal file
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@@ -0,0 +1,63 @@
/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
* full text of the license. */
/**
* @requires OpenLayers/Strategy.js
*/
/**
* Class: OpenLayers.Strategy.Fixed
* A simple strategy that requests features once and never requests new data.
*
* Inherits from:
* - <OpenLayers.Strategy>
*/
OpenLayers.Strategy.Fixed = OpenLayers.Class(OpenLayers.Strategy, {
/**
* Constructor: OpenLayers.Strategy.Fixed
* Create a new Fixed strategy.
*
* Parameters:
* options - {Object} Optional object whose properties will be set on the
* instance.
*/
initialize: function(options) {
OpenLayers.Strategy.prototype.initialize.apply(this, [options]);
},
/**
* APIMethod: destroy
* Clean up the strategy.
*/
destroy: function() {
OpenLayers.Strategy.prototype.destroy.apply(this, arguments);
},
/**
* Method: activate
* Activate the strategy: reads all features from the protocol and add them
* to the layer.
*/
activate: function() {
OpenLayers.Strategy.prototype.activate.apply(this, arguments);
this.layer.protocol.read({
callback: this.merge,
scope: this
});
},
/**
* Method: merge
* Add all features to the layer.
*/
merge: function(resp) {
var features = resp.features;
if (features && features.length > 0) {
this.layer.addFeatures(features);
}
},
CLASS_NAME: "OpenLayers.Strategy.Fixed"
});

34
tests/Strategy/Fixed.html Normal file
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@@ -0,0 +1,34 @@
<html>
<head>
<script src="../../lib/OpenLayers.js"></script>
<script type="text/javascript">
function test_activate(t) {
t.plan(1);
var featureList = ['foo', 'bar'];
var layer = new OpenLayers.Layer.Vector("Vector Layer", {
strategies: [new OpenLayers.Strategy.Fixed()],
// a fake protocol
protocol: {
read: function(options) {
options.callback.call(options.scope, {features: featureList});
}
},
addFeatures: function(features) {
t.eq(features, featureList, "Features added to the layer");
}
});
var map = new OpenLayers.Map('map');
map.addLayer(layer);
}
</script>
</head>
<body>
<div id="map"/>
</body>
</html>

1
tests/list-tests.html
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@@ -121,6 +121,7 @@
<li>Request/XMLHttpRequest.html</li>
<li>Rule.html</li>
<li>Strategy.html</li>
<li>Strategy/Fixed.html</li>
<li>Style.html</li>
<li>StyleMap.html</li>
<li>Tile.html</li>