DateTime adapter (#628)

vtm-web/src/org/oscim/gdx/client/GwtDateTime.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019 Gustl22
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.gdx.client;
+
+import com.google.gwt.core.client.JsDate;
+
+import org.oscim.backend.DateTimeAdapter;
+
+public class GwtDateTime extends DateTimeAdapter {
+
+    @Override
+    public int getHour() {
+        return JsDate.create().getHours();
+    }
+
+    @Override
+    public int getMinute() {
+        return JsDate.create().getMinutes();
+    }
+
+    @Override
+    public int getSecond() {
+        return JsDate.create().getSeconds();
+    }
+
+    @Override
+    public int getDayOfYear() {
+        JsDate year = JsDate.create();
+        JsDate start = JsDate.create(year.getFullYear(), 0);
+        double diff = year.getTime() - start.getTime();
+        return (int) (diff / (DateTimeAdapter.MILLIS_PER_DAY)) + 1;
+    }
+
+    @Override
+    public int getTimeZoneOffset() {
+        JsDate date = JsDate.create();
+        return -date.getTimezoneOffset() * 60 * 1000;
+    }
+}