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Accessibility - now we can use the keyboard to zoom in and out.

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This commit is contained in:
ahocevar
2012-06-24 13:45:32 +02:00
parent 218ad77103
commit bc37121ae0
1 changed files with 15 additions and 12 deletions
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27
src/ol/control/Zoom.js
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@@ -1,6 +1,8 @@
goog.provide('ol.control.Zoom');
goog.require('ol.event');
goog.require('ol.control.Control');
goog.require('goog.dom');
@@ -58,7 +60,8 @@ ol.control.Zoom.prototype.setMap = function(map) {
ol.control.Zoom.prototype.activate = function() {
var active = goog.base(this, 'activate');
if (active) {
this.map_.getEvents().register("click", this.handle, this);
this.map_.getEvents().register('click', this.handle, this);
this.map_.getEvents().register('keypress', this.handle, this);
}
return active;
};
@@ -67,7 +70,8 @@ ol.control.Zoom.prototype.activate = function() {
ol.control.Zoom.prototype.deactivate = function() {
var inactive = goog.base(this, 'deactivate');
if (inactive) {
this.map_.getEvents().unregister("click", this.handle, this);
this.map_.getEvents().unregister('click', this.handle, this);
this.map_.getEvents().unregister('keypress', this.handle, this);
}
return inactive;
};
@@ -78,16 +82,15 @@ ol.control.Zoom.prototype.deactivate = function() {
ol.control.Zoom.prototype.handle = function(evt) {
var target = /** @type {Node} */ (evt.target),
handled = false;
if (goog.dom.getAncestorByClass(target, ol.control.Zoom.RES.IN_CLS)) {
this.map_.zoomIn();
handled = true;
} else
if (goog.dom.getAncestorByClass(target, ol.control.Zoom.RES.OUT_CLS)) {
this.map_.zoomOut();
handled = true;
}
if (handled) {
evt.preventDefault();
if (evt.type === 'click' || ol.event.isEnterOrSpace(evt)) {
if (goog.dom.getAncestorByClass(target, ol.control.Zoom.RES.IN_CLS)) {
this.map_.zoomIn();
handled = true;
} else
if (goog.dom.getAncestorByClass(target, ol.control.Zoom.RES.OUT_CLS)) {
this.map_.zoomOut();
handled = true;
}
}
return !handled;
};