/*
* Copyright 2011 Daniel Kurka
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.googlecode.gwtphonegap.client.compass.js;
import com.googlecode.gwtphonegap.client.compass.Compass;
import com.googlecode.gwtphonegap.client.compass.CompassCallback;
import com.googlecode.gwtphonegap.client.compass.CompassOptions;
import com.googlecode.gwtphonegap.client.compass.CompassWatcher;
public class CompassJsImpl implements Compass {
@Override
public native void getCurrentHeading(CompassOptions options, CompassCallback callback) /*-{
var suc = function(heading) {
callback.@com.googlecode.gwtphonegap.client.compass.CompassCallback::onSuccess(Lcom/googlecode/gwtphonegap/client/compass/CompassHeading;)(heading);
};
var fail = function(error) {
callback.@com.googlecode.gwtphonegap.client.compass.CompassCallback::onError(Lcom/googlecode/gwtphonegap/client/compass/CompassError;)(error);
};
var gap_options = {};
gap_options.frequency = options.@com.googlecode.gwtphonegap.client.compass.CompassOptions::getFrequency()();
var filter = options.@com.googlecode.gwtphonegap.client.compass.CompassOptions::getFilter()();
if (filter != -1) {
gap_options.filter = filter;
}
$wnd.navigator.compass.getCurrentHeading($entry(suc), $entry(fail),
gap_options);
}-*/;
@Override
public CompassWatcher watchHeading(CompassOptions options, CompassCallback callback) {
String watchId = watchHeading0(options, callback);
return new CompassWatcherImpl(watchId);
}
private native String watchHeading0(CompassOptions options, CompassCallback callback)/*-{
var suc = function(heading) {
callback.@com.googlecode.gwtphonegap.client.compass.CompassCallback::onSuccess(Lcom/googlecode/gwtphonegap/client/compass/CompassHeading;)(heading);
};
var fail = function(error) {
callback.@com.googlecode.gwtphonegap.client.compass.CompassCallback::onError(Lcom/googlecode/gwtphonegap/client/compass/CompassError;)(error);
};
var gap_options = {};
gap_options.frequency = options.@com.googlecode.gwtphonegap.client.compass.CompassOptions::getFrequency()();
var id = $wnd.navigator.compass.watchHeading($entry(suc), $entry(fail),
gap_options);
return id;
}-*/;
@Override
public void clearWatcher(CompassWatcher watcher) {
if (!(watcher instanceof CompassWatcherImpl)) {
throw new IllegalStateException("this should not happen - I can only cancel watchers you got from watchHeading");
}
CompassWatcherImpl compassWatcherImpl = (CompassWatcherImpl) watcher;
String id = compassWatcherImpl.getId();
clearWatcher0(id);
}
private native void clearWatcher0(String id)/*-{
$wnd.navigator.compass.clearWatch(id);
}-*/;
}