First step of data flow refactoring.

This moves all data source connections into the TrackDataHub. There are still many things to (re)do here: - Optimizations about when the listeners are registered - Optimizations about what data each TrackDataListener is interested in - When activities are restarting, send new data since they were stopped (instead of doing a full reload) - Proper double-buffering of Location objects (some listeners are interested in double-buffering all points, while others are only interested in double-buffering sampled points) - etc.
2026-10-08 04:13:06 +02:00 · 2011-03-11 22:26:05 -03:00
commit 675b4f55c1
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+/*
+ * Copyright 2010 Google Inc.
+ * 
+ * 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.google.android.apps.mytracks;
+
+import com.google.android.apps.mytracks.util.ApiFeatures;
+import com.google.android.maps.mytracks.R;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import java.util.Locale;
+
+/**
+ * Check to see if the units are the default for the locale.
+ * This comes down to warning Americans that the default is metric.
+ *
+ * @author Sandor Dornbush
+ */
+class CheckUnits {
+  private static final String PREFERENCE_UNITS_CHECKED = "checkunits.checked";
+  private static final String PREFERENCES_CHECK_UNITS = "checkunits";
+
+  static void check(final Context context) {
+    final SharedPreferences preferences =
+        context.getSharedPreferences(PREFERENCES_CHECK_UNITS, Activity.MODE_PRIVATE);
+
+    // Has the user already warned about the default units?
+    if (preferences.getBoolean(PREFERENCE_UNITS_CHECKED, false)) {
+      return;
+    }
+
+    // Is the user in the US?
+    Locale current = Locale.getDefault();
+    Locale enUs = new Locale(Locale.ENGLISH.getLanguage(),
+                             Locale.US.getCountry());
+    if (!current.equals(enUs)) {
+      return;
+    }
+
+    final AlertDialog.Builder builder = new AlertDialog.Builder(context);
+    builder.setTitle(R.string.check_units_title);
+    builder.setCancelable(true);
+    builder.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
+      public void onClick(DialogInterface dialog, int which) {
+        accept(context, preferences);
+      }
+    });
+    builder.setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
+      public void onClick(DialogInterface dialog, int which) {
+        recordCheckPerformed(preferences);
+      }
+    });
+    builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
+      public void onCancel(DialogInterface dialog) {
+        recordCheckPerformed(preferences);
+      }
+    });
+    builder.setMessage(R.string.check_units_message);
+    builder.show();
+  }
+
+  private static void accept(Context context, SharedPreferences preferences) {
+    recordCheckPerformed(preferences);
+    Intent startIntent = new Intent(context, MyTracksSettings.class);
+    context.startActivity(startIntent);
+  }
+
+  private static void recordCheckPerformed(SharedPreferences preferences) {
+    ApiFeatures.getInstance().getApiPlatformAdapter().applyPreferenceChanges(
+        preferences.edit().putBoolean(PREFERENCE_UNITS_CHECKED, true));
+  }
+
+  private CheckUnits() {
+  }
+}