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Raise layer that's being modified

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This commit is contained in:
ahocevar
2013-04-27 21:46:22 +02:00
parent f3c0348567
commit 9d6ce21109
2 changed files with 72 additions and 0 deletions
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58
lib/OpenLayers/Control/ModifyFeature.js
View File

@@ -277,6 +277,13 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
* Take care of things that are not handled in superclass.
*/
destroy: function() {
if (this.map) {
this.map.events.un({
"removelayer": this.handleMapEvents,
"changelayer": this.handleMapEvents,
scope: this
});
}
this.layer = null;
OpenLayers.Control.prototype.destroy.apply(this, []);
},
@@ -289,6 +296,12 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
* {Boolean} Successfully activated the control.
*/
activate: function() {
this.moveLayerToTop();
this.map.events.on({
"removelayer": this.handleMapEvents,
"changelayer": this.handleMapEvents,
scope: this
});
return (this.handlers.keyboard.activate() &&
this.handlers.drag.activate() &&
OpenLayers.Control.prototype.activate.apply(this, arguments));
@@ -305,6 +318,12 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
var deactivated = false;
// the return from the controls is unimportant in this case
if(OpenLayers.Control.prototype.deactivate.apply(this, arguments)) {
this.moveLayerBack();
this.map.events.un({
"removelayer": this.handleMapEvents,
"changelayer": this.handleMapEvents,
scope: this
});
this.layer.removeFeatures(this.vertices, {silent: true});
this.layer.removeFeatures(this.virtualVertices, {silent: true});
this.vertices = [];
@@ -750,6 +769,45 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
OpenLayers.Control.prototype.setMap.apply(this, arguments);
},
/**
* Method: handleMapEvents
*
* Parameters:
* evt - {Object}
*/
handleMapEvents: function(evt) {
if (evt.type == "removelayer" || evt.property == "order") {
this.moveLayerToTop();
}
},
/**
* Method: moveLayerToTop
* Moves the layer for this handler to the top, so mouse events can reach
* it.
*/
moveLayerToTop: function() {
var index = Math.max(this.map.Z_INDEX_BASE['Feature'] - 1,
this.layer.getZIndex()) + 1;
this.layer.setZIndex(index);
},
/**
* Method: moveLayerBack
* Moves the layer back to the position determined by the map's layers
* array.
*/
moveLayerBack: function() {
var index = this.layer.getZIndex() - 1;
if (index >= this.map.Z_INDEX_BASE['Feature']) {
this.layer.setZIndex(index);
} else {
this.map.setLayerZIndex(this.layer,
this.map.getLayerIndex(this.layer));
}
},
CLASS_NAME: "OpenLayers.Control.ModifyFeature"
});

14
tests/Control/ModifyFeature.html
View File

@@ -802,6 +802,20 @@
control.destroy();
}
function test_moveLayerToTop_moveLayerBack(t) {
t.plan(2);
var map = new OpenLayers.Map("map");
var layer1 = new OpenLayers.Layer.Vector();
var layer2 = new OpenLayers.Layer.Vector();
map.addLayers([layer1, layer2]);
var control = new OpenLayers.Control.ModifyFeature(layer1);
map.addControl(control);
control.activate();
t.ok(layer1.div.style.zIndex > layer2.div.style.zIndex, "layer raised so events don't get swallowed");
control.deactivate();
t.ok(layer1.div.style.zIndex < layer2.div.style.zIndex, 'layer order restored on deactivation');
}
</script>
</head>
<body>