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<html>
<head>
<script src="../OLLoader.js"></script>
<script type="text/javascript">
function test_activate(t) {
t.plan(5);
var featureList = ['foo', 'bar'];
// a fake protocol
var protocol = {
read: function(options) {
options.callback.call(options.scope, {features: featureList});
}
};
// Create a dummy layer that can act as the map base layer.
// This will be unnecessary if #1920 is addressed or if base layer
// handling is changed.
var dummy = new OpenLayers.Layer(null, {isBaseLayer: true});
var layer = new OpenLayers.Layer.Vector("Vector Layer", {
strategies: [new OpenLayers.Strategy.Fixed()],
protocol: protocol,
addFeatures: function(features) {
t.eq(features, featureList, "Features added to the layer");
}
});
var layerp = new OpenLayers.Layer.Vector("Hidden preload Layer", {
strategies: [new OpenLayers.Strategy.Fixed({preload:true})],
protocol: protocol,
visibility: false,
addFeatures: function(features) {
t.ok(!this.visibility, "Features preloaded before visible");
}
});
var s = new OpenLayers.Strategy.Fixed();
var layer2 = new OpenLayers.Layer.Vector("Hidden lazyload Layer", {
strategies: [s],
protocol: protocol,
visibility: false,
addFeatures: function(features) {
t.ok(this.visibility, "Layer visible when features added");
}
});
var map = new OpenLayers.Map('map');
map.addLayers([dummy, layer, layerp, layer2]);
t.ok(layer2.events.listeners["visibilitychanged"][0].obj == s &&
layer2.events.listeners["visibilitychanged"][0].func == s.load,
"activate registers visibilitychanged listener if layer hidden"+
" and is lazyloading");
layer2.setVisibility(true);
t.ok(layer2.events.listeners["visibilitychanged"] == false,
"visibilitychanged listener unregistered");
}
function test_events(t) {
t.plan(3);
var log = {
loadstart: 0,
loadend: 0
};
var map = new OpenLayers.Map("map");
var layer = new OpenLayers.Layer.Vector(null, {
strategies: [new OpenLayers.Strategy.Fixed()],
protocol: new OpenLayers.Protocol({
read: function(config) {
config.callback.call(config.scope, {});
}
}),
isBaseLayer: true,
eventListeners: {
loadstart: function() {
++log.loadstart;
},
loadend: function() {
++log.loadend;
}
}
});
map.addLayer(layer);
map.zoomToMaxExtent();
t.eq(log.loadstart, 1, "loadstart triggered");
t.eq(log.loadend, 1, "loadend triggered");
var log = {};
layer.protocol.read = function(obj) {
log.obj = obj;
}
layer.refresh({whee: 'chicken'});
t.eq(log.obj && log.obj.whee, "chicken", "properties passed to read on refresh correctly.");
map.destroy();
}
function test_merge(t) {
t.plan(6);
var strategy = new OpenLayers.Strategy.Fixed();
// create map with default projection
var map = new OpenLayers.Map("map");
var log = {
loadend: 0
};
// create layer with custom projection
var layer = new OpenLayers.Layer.Vector(null, {
isBaseLayer: true,
strategies: [strategy],
protocol: new OpenLayers.Protocol(),
projection: new OpenLayers.Projection("EPSG:900913"),
eventListeners: {
loadend: function() {
++log.loadend;
}
}
});
// give the layer some existing features (one)
layer.addFeatures([
new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Point(0, 0)
)
]);
map.addLayer(layer);
map.zoomToMaxExtent();
// create some features
var geometries = [
new OpenLayers.Geometry.Point(100, 200),
new OpenLayers.Geometry.Point(1000, 2000)
];
var features = [
new OpenLayers.Feature.Vector(geometries[0].clone()),
new OpenLayers.Feature.Vector(geometries[1].clone())
];
// call merge with a mocked up response
strategy.merge(new OpenLayers.Projection("EPSG:900913"), {features: features});
// confirm that the original features were destroyed
t.eq(layer.features.length, 2, "old features destroyed");
// confirm that loadend was called
t.eq(log.loadend, 1, "merge triggers loadend");
// test that feature geometries have been transformed to map projection
var from = layer.projection;
var to = map.getProjectionObject();
t.geom_eq(layer.features[0].geometry, features[0].geometry.transform(from, to), "[different proj] feature 0 geometry transformed");
t.geom_eq(layer.features[1].geometry, features[1].geometry.transform(from, to), "[different proj] feature 1 geometry transformed");
// same as above but with same map/layer projection
layer.destroyFeatures();
layer.projection = map.getProjectionObject();
features = [
new OpenLayers.Feature.Vector(geometries[0].clone()),
new OpenLayers.Feature.Vector(geometries[1].clone())
];
// call merge again with mocked up response
strategy.merge(new OpenLayers.Projection("EPSG:900913"), {features: features});
// test that feature geometries have not been transformed
t.geom_eq(layer.features[0].geometry, features[0].geometry, "[same proj] feature 0 geometry not transformed");
t.geom_eq(layer.features[1].geometry, features[1].geometry, "[same proj] feature 1 geometry not transformed");
}
function test_load(t) {
t.plan(4);
// set up
var log;
var map = new OpenLayers.Map({
div: "map",
projection: new OpenLayers.Projection("EPSG:900913"),
layers: [new OpenLayers.Layer("", {isBaseLayer: true})]
});
var response = new OpenLayers.Protocol.Response();
var strategy = new OpenLayers.Strategy.Fixed({
merge: function(p, r) {
log = {scope: this, projection: p, response: r};
}
});
var layer = new OpenLayers.Layer.Vector("vector", {
strategies: [strategy],
protocol: {
read: function(o) {
o.callback.call(o.scope, response);
}
}
});
map.addLayer(layer);
// test
strategy.load();
// verify that the callback is correctly bound
t.ok(log !== undefined,
"merge was called");
t.ok(log.scope == strategy,
"merge called with expected scope");
t.eq(log.projection.getCode(), map.getProjectionObject().getCode(),
"merge called the map projection as the first arg");
t.ok(log.response == response,
"merge called with response as the first arg");
// tear down
map.destroy();
}
</script>
</head>
<body>
<div id="map" style="width: 400px; height: 200px" />
</body>
</html>
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