256f027c7c
layers, and not load by default if the layer is not visible. Includes tests. Default Behavior can be changed with 'OpenLayers.Strategy.Fixed.prototype.preload=true;'. With review from elemoine, comments from tschaub, review from me. Patch by Edgemaster. (Closes #1852) git-svn-id: http://svn.openlayers.org/trunk/openlayers@8775 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
64 lines
2.0 KiB
HTML
64 lines
2.0 KiB
HTML
<html>
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<head>
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<script src="../../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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function test_activate(t) {
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t.plan(5);
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var featureList = ['foo', 'bar'];
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// a fake protocol
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var protocol = {
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read: function(options) {
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options.callback.call(options.scope, {features: featureList});
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}
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};
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var layer = new OpenLayers.Layer.Vector("Vector Layer", {
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strategies: [new OpenLayers.Strategy.Fixed()],
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protocol: protocol,
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addFeatures: function(features) {
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t.eq(features, featureList, "Features added to the layer");
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}
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});
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var layerp = new OpenLayers.Layer.Vector("Hidden preload Layer", {
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strategies: [new OpenLayers.Strategy.Fixed({preload:true})],
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protocol: protocol,
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visibility: false,
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addFeatures: function(features) {
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t.ok(!this.visibility, "Features preloaded before visible");
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}
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});
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var s = new OpenLayers.Strategy.Fixed();
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var layer2 = new OpenLayers.Layer.Vector("Hidden lazyload Layer", {
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strategies: [s],
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protocol: protocol,
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visibility: false,
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addFeatures: function(features) {
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t.ok(this.visibility, "Layer visible when features added");
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}
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});
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var map = new OpenLayers.Map('map');
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map.addLayers([layer, layerp, layer2]);
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t.ok(layer2.events.listeners["visibilitychanged"][0].obj == s &&
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layer2.events.listeners["visibilitychanged"][0].func == s.load,
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"activate registers visibilitychanged listener if layer hidden"+
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" and is lazyloading");
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layer2.setVisibility(true);
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t.ok(layer2.events.listeners["visibilitychanged"] == false,
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"visibilitychanged listener unregistered");
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}
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</script>
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</head>
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<body>
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<div id="map" style="width: 400px; height: 200px" />
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</body>
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</html>
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