f84f696e31
git-svn-id: http://svn.openlayers.org/trunk/openlayers@11162 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
114 lines
4.0 KiB
HTML
114 lines
4.0 KiB
HTML
<html>
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<head>
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<script src="../OLLoader.js"></script>
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<script type="text/javascript">
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function test_activate(t) {
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t.plan(2);
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var strategy = new OpenLayers.Strategy.Paging();
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t.eq(strategy.active, false, "not active after construction");
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var layer = new OpenLayers.Layer.Vector("Vector Layer", {
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strategies: [strategy]
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});
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var map = new OpenLayers.Map('map');
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map.addLayer(layer);
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t.eq(strategy.active, true, "active after adding to map");
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}
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function test_paging(t) {
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t.plan(18);
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var strategy = new OpenLayers.Strategy.Paging();
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var layer = new OpenLayers.Layer.Vector("Vector Layer", {
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strategies: [strategy],
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drawFeature: function() {}
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});
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var map = new OpenLayers.Map('map');
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map.addLayer(layer);
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var features = new Array(25);
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for(var i=0; i<features.length; ++i) {
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features[i] = {destroy: function() {}};
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}
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function featuresEq(got, exp) {
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var eq = false;
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if(got instanceof Array && exp instanceof Array) {
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if(got.length === exp.length) {
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for(var i=0; i<got.length; ++i) {
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if(got[i] !== exp[i]) {
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console.log(got[i], exp[i]);
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break;
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}
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}
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eq = (i == got.length);
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}
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}
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return eq;
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}
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var len = strategy.pageLength();
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t.eq(len, 10, "page length defaults to 10");
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// add 25 features to the layer
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layer.addFeatures(features);
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t.eq(strategy.features.length, features.length, "strategy caches all features");
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t.eq(layer.features.length, len, "layer gets one page of features");
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t.ok(featuresEq(layer.features, features.slice(0, len)), "layer gets first page initially");
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t.eq(strategy.pageNum(), 0, "strategy reports 0 based page number");
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t.eq(strategy.pageCount(), Math.ceil(features.length / len), "strategy reports correct number of pages");
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// load next page of features
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var changed = strategy.pageNext();
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t.eq(changed, true, "(1) strategy reports change");
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t.eq(strategy.pageNum(), 1, "second page");
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t.ok(featuresEq(layer.features, features.slice(len, 2*len)), "layer has second page of features");
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// load next page of features (half page)
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changed = strategy.pageNext();
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t.eq(changed, true, "(2) strategy reports change");
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t.eq(strategy.pageNum(), 2, "third page");
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// try to change forward again
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changed = strategy.pageNext();
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t.eq(changed, false, "strategy reports no change");
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t.eq(layer.features.length, features.length % len, "layer has partial page");
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t.ok(featuresEq(layer.features, features.slice(2*len, 3*len)), "layer has third page of features");
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t.eq(strategy.pageNum(), 2, "still on third page");
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// change back a page
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changed = strategy.pagePrevious();
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t.eq(changed, true, "(3) strategy reports change");
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t.eq(strategy.pageNum(), 1, "back on second page");
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t.ok(featuresEq(layer.features, features.slice(len, 2*len)), "layer has second page of features again");
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layer.destroy();
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}
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function test_deactivate(t) {
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t.plan(2);
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var strategy = new OpenLayers.Strategy.Paging();
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var layer = new OpenLayers.Layer.Vector("Vector Layer", {
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strategies: [strategy]
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});
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var map = new OpenLayers.Map('map');
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map.addLayer(layer);
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t.eq(strategy.active, true, "active after adding to map");
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map.removeLayer(layer);
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t.eq(strategy.active, false, "not active after removing from map");
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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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