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Give OpenLayers.Map a preremovelayer-event. Thanks to mosesonline for the patch. p=mosesonline, r=me (fixes #3306)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@12154 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Marc Jansen
2011-07-05 07:48:28 +00:00
parent 19756915d3
commit 3b70536695
2 changed files with 48 additions and 6 deletions
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35
tests/Map.html
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@@ -802,7 +802,40 @@
map.destroy();
}
function test_Map_removeLayer_preremovelayer(t) {
t.plan(4);
map = new OpenLayers.Map('map');
map.addLayer(new OpenLayers.Layer());
map.removeLayer(map.layers[0]);
// one test: standard behaviour without listener
t.eq(map.layers.length, 0, "without registered preremovelayer-listener layers can be removed as usual");
var callCnt = 0;
map.events.register('preremovelayer', this, function(evt) {
callCnt++;
return !(evt.layer.name === 'donotremove');
});
var layer1 = new OpenLayers.Layer('donotremove');
var layer2 = new OpenLayers.Layer('doremove');
map.addLayers([layer1,layer2]);
// two tests: remove action can be canceled
map.removeLayer(layer1);
t.eq(map.layers.length, 2, "layer is not removed since preremovelayer returns false");
map.removeLayer(layer2);
t.eq(map.layers.length, 1, "layer is removed since preremovelayer returns true");
// one test: listener was called twice
t.eq(callCnt, 2, "preremovelayer-listener was called exactly twice");
map.destroy();
}
function test_Map_setBaseLayer_after_pan (t) {
t.plan(1);