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add an observeElement option to Handler.Keyboard and Control.KeyboardDefaults to control the DOM element on which key events are observed

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This commit is contained in:
Éric Lemoine
2012-01-26 13:11:33 +01:00
parent 2ecec3ddc3
commit c0b02b278a
4 changed files with 95 additions and 27 deletions
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12
lib/OpenLayers/Handler/Keyboard.js
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@@ -33,6 +33,13 @@ OpenLayers.Handler.Keyboard = OpenLayers.Class(OpenLayers.Handler, {
*/
eventListener: null,
/**
* Property: observeElement
* {DOMElement|String} The DOM element on which we listen for
* key events. Default to the document.
*/
observeElement: null,
/**
* Constructor: OpenLayers.Handler.Keyboard
* Returns a new keyboard handler.
@@ -71,9 +78,10 @@ OpenLayers.Handler.Keyboard = OpenLayers.Class(OpenLayers.Handler, {
*/
activate: function() {
if (OpenLayers.Handler.prototype.activate.apply(this, arguments)) {
this.observeElement = this.observeElement || document;
for (var i=0, len=this.KEY_EVENTS.length; i<len; i++) {
OpenLayers.Event.observe(
this.map.div, this.KEY_EVENTS[i], this.eventListener);
this.observeElement, this.KEY_EVENTS[i], this.eventListener);
}
return true;
} else {
@@ -89,7 +97,7 @@ OpenLayers.Handler.Keyboard = OpenLayers.Class(OpenLayers.Handler, {
if (OpenLayers.Handler.prototype.deactivate.apply(this, arguments)) {
for (var i=0, len=this.KEY_EVENTS.length; i<len; i++) {
OpenLayers.Event.stopObserving(
this.map.div, this.KEY_EVENTS[i], this.eventListener);
this.observeElement, this.KEY_EVENTS[i], this.eventListener);
}
deactivated = true;
}