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Change code style.
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/*
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* Copyright 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.google.android.apps.mytracks.widgets;
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import static com.google.android.apps.mytracks.Constants.SETTINGS_NAME;
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import com.google.android.apps.mytracks.TrackDetailActivity;
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import com.google.android.apps.mytracks.TrackListActivity;
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import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
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import com.google.android.apps.mytracks.content.Track;
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import com.google.android.apps.mytracks.content.TracksColumns;
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import com.google.android.apps.mytracks.services.ControlRecordingService;
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import com.google.android.apps.mytracks.stats.TripStatistics;
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import com.google.android.apps.mytracks.util.IntentUtils;
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import com.google.android.apps.mytracks.util.PreferencesUtils;
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import com.google.android.apps.mytracks.util.StringUtils;
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import com.google.android.maps.mytracks.R;
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import android.app.PendingIntent;
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import android.appwidget.AppWidgetManager;
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import android.appwidget.AppWidgetProvider;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
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import android.database.ContentObserver;
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import android.os.Handler;
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import android.support.v4.app.TaskStackBuilder;
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import android.view.View;
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import android.widget.RemoteViews;
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/**
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* A track widget to start/stop recording, launch My Tracks, and display track
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* statistics (distance, time, speed) for the selected track or the last track.
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*
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* @author Sandor Dornbush
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* @author Paul R. Saxman
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*/
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public class TrackWidgetProvider extends AppWidgetProvider
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implements OnSharedPreferenceChangeListener {
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/**
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* Observer for track content.
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*
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* @author Jimmy Shih
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*/
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private class TrackObserver extends ContentObserver {
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public TrackObserver() {
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super(handler);
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}
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@Override
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public void onChange(boolean selfChange) {
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updateTrack(null);
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}
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}
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private final Handler handler;
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private Context context;
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private TrackObserver trackObserver;
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private MyTracksProviderUtils myTracksProviderUtils;
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private String unknown;
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private String trackStartedBroadcastAction;
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private String trackStoppedBroadcastAction;
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private SharedPreferences sharedPreferences;
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private long selectedTrackId;
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private boolean metricUnits;
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private boolean reportSpeed;
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private boolean showMovingTime;
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public TrackWidgetProvider() {
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super();
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handler = new Handler();
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}
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@Override
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public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
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if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.metric_units_key))) {
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metricUnits = PreferencesUtils.getBoolean(
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context, R.string.metric_units_key, PreferencesUtils.METRIC_UNITS_DEFAULT);
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}
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if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.report_speed_key))) {
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reportSpeed = PreferencesUtils.getBoolean(
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context, R.string.report_speed_key, PreferencesUtils.REPORT_SPEED_DEFAULT);
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}
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if (key == null
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|| key.equals(PreferencesUtils.getKey(context, R.string.stats_show_moving_time_key))) {
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showMovingTime = PreferencesUtils.getBoolean(context, R.string.stats_show_moving_time_key,
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PreferencesUtils.STATS_SHOW_MOVING_TIME_DEFAULT);
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}
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if (key == null
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|| key.equals(PreferencesUtils.getKey(context, R.string.selected_track_id_key))) {
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selectedTrackId = PreferencesUtils.getLong(context, R.string.selected_track_id_key);
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}
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if (key != null) {
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updateTrack(null);
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}
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}
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@Override
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public void onReceive(Context aContext, Intent intent) {
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super.onReceive(aContext, intent);
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initialize(aContext);
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selectedTrackId = intent.getLongExtra(
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context.getString(R.string.track_id_broadcast_extra), selectedTrackId);
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String action = intent.getAction();
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if (AppWidgetManager.ACTION_APPWIDGET_ENABLED.equals(action)
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|| AppWidgetManager.ACTION_APPWIDGET_UPDATE.equals(action)
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|| trackStartedBroadcastAction.equals(action)
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|| trackStoppedBroadcastAction.equals(action)) {
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updateTrack(action);
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}
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}
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@Override
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public void onDisabled(Context aContext) {
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if (sharedPreferences != null) {
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sharedPreferences.unregisterOnSharedPreferenceChangeListener(this);
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}
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if (trackObserver != null) {
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aContext.getContentResolver().unregisterContentObserver(trackObserver);
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}
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}
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/**
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* Initializes the widget.
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*
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* @param aContext a context
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*/
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private void initialize(Context aContext) {
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if (context != null) {
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// Already initialized
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return;
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}
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context = aContext;
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trackObserver = new TrackObserver();
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myTracksProviderUtils = MyTracksProviderUtils.Factory.get(context);
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unknown = context.getString(R.string.value_unknown);
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trackStartedBroadcastAction = context.getString(R.string.track_started_broadcast_action);
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trackStoppedBroadcastAction = context.getString(R.string.track_stopped_broadcast_action);
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sharedPreferences = context.getSharedPreferences(SETTINGS_NAME, Context.MODE_PRIVATE);
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sharedPreferences.registerOnSharedPreferenceChangeListener(this);
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onSharedPreferenceChanged(sharedPreferences, null);
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context.getContentResolver()
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.registerContentObserver(TracksColumns.CONTENT_URI, true, trackObserver);
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}
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/**
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* Updates the widget.
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*
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* @param action the action
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*/
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private void updateTrack(String action) {
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RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.track_widget);
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if (action != null) {
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updateButton(remoteViews, action);
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}
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updateView(remoteViews);
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AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
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int[] appWidgetIds = appWidgetManager.getAppWidgetIds(
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new ComponentName(context, TrackWidgetProvider.class));
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for (int appWidgetId : appWidgetIds) {
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appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
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}
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}
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/**
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* Updates button to start/stop recording.
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*
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* @param remoteViews the remote views
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* @param action the action
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*/
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private void updateButton(RemoteViews remoteViews, String action) {
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boolean isRecording = trackStartedBroadcastAction.equals(action);
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remoteViews.setViewVisibility(
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R.id.track_widget_record_button, isRecording ? View.GONE : View.VISIBLE);
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remoteViews.setViewVisibility(
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R.id.track_widget_stop_button, isRecording ? View.VISIBLE : View.INVISIBLE);
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Intent intent = new Intent(context, ControlRecordingService.class).setAction(
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context.getString(isRecording ? R.string.track_action_end : R.string.track_action_start));
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PendingIntent pendingIntent = PendingIntent.getService(
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context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
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remoteViews.setOnClickPendingIntent(
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isRecording ? R.id.track_widget_stop_button : R.id.track_widget_record_button,
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pendingIntent);
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}
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/**
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* Updates view.
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*
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* @param remoteViews the remote views
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*/
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private void updateView(RemoteViews remoteViews) {
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Track track = selectedTrackId != PreferencesUtils.SELECTED_TRACK_ID_DEFAULT ? myTracksProviderUtils
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.getTrack(selectedTrackId)
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: myTracksProviderUtils.getLastTrack();
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TripStatistics tripStatistics = track == null ? null : track.getTripStatistics();
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String distanceValue = tripStatistics == null ? unknown
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: StringUtils.formatDistance(context, tripStatistics.getTotalDistance(), metricUnits);
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remoteViews.setTextViewText(R.id.track_widget_distance_value, distanceValue);
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String totalTimeValue = tripStatistics == null ? unknown
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: StringUtils.formatElapsedTime(tripStatistics.getTotalTime());
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remoteViews.setTextViewText(R.id.track_widget_total_time_value, totalTimeValue);
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String averageSpeedLabel = context.getString(
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reportSpeed ? R.string.stats_average_speed : R.string.stats_average_pace);
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remoteViews.setTextViewText(R.id.track_widget_average_speed_label, averageSpeedLabel);
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String averageSpeedValue = tripStatistics == null ? unknown
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: StringUtils.formatSpeed(
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context, tripStatistics.getAverageSpeed(), metricUnits, reportSpeed);
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remoteViews.setTextViewText(R.id.track_widget_average_speed_value, averageSpeedValue);
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setStatVisibility(remoteViews, R.id.track_widget_moving_time_stat,
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R.id.track_widget_moving_time_separator, showMovingTime);
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if (showMovingTime) {
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String movingTimeValue = tripStatistics == null ? unknown
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: StringUtils.formatElapsedTime(tripStatistics.getMovingTime());
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remoteViews.setTextViewText(R.id.track_widget_moving_time_value, movingTimeValue);
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}
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setStatVisibility(remoteViews, R.id.track_widget_average_moving_speed_stat,
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R.id.track_widget_average_moving_speed_separator, showMovingTime);
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if (showMovingTime) {
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String averageMovingSpeedLabel = context.getString(
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reportSpeed ? R.string.stats_average_moving_speed : R.string.stats_average_moving_pace);
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remoteViews.setTextViewText(
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R.id.track_widget_average_moving_speed_label, averageMovingSpeedLabel);
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String averageMovingSpeedValue = tripStatistics == null ? unknown
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: StringUtils.formatSpeed(
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context, tripStatistics.getAverageMovingSpeed(), metricUnits, reportSpeed);
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remoteViews.setTextViewText(
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R.id.track_widget_average_moving_speed_value, averageMovingSpeedValue);
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}
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Intent intent;
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if (track != null) {
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intent = IntentUtils.newIntent(context, TrackDetailActivity.class)
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.putExtra(TrackDetailActivity.EXTRA_TRACK_ID, track.getId());
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} else {
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intent = IntentUtils.newIntent(context, TrackListActivity.class);
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}
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TaskStackBuilder taskStackBuilder = TaskStackBuilder.from(context);
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taskStackBuilder.addNextIntent(intent);
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PendingIntent pendingIntent = taskStackBuilder.getPendingIntent(0, 0);
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remoteViews.setOnClickPendingIntent(R.id.track_widget_statistics, pendingIntent);
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remoteViews.setOnClickPendingIntent(R.id.track_widget_icon, pendingIntent);
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}
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private void setStatVisibility(
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RemoteViews remoteViews, int statId, int separatorId, boolean show) {
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remoteViews.setViewVisibility(statId, show ? View.VISIBLE : View.GONE);
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remoteViews.setViewVisibility(separatorId, show ? View.VISIBLE : View.GONE);
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}
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}
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