Layoutlib: Add DateIntervalFormat_Delegate required by CalendarView

Change-Id: Ica79267a4eb231db833cb0232cfacf419fe73de3

Author: deepanshu-

tools/layoutlib/bridge/src/libcore/icu/DateIntervalFormat_Delegate.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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 libcore.icu;
+
+import java.text.FieldPosition;
+
+import com.android.ide.common.rendering.api.LayoutLog;
+import com.android.layoutlib.bridge.Bridge;
+import com.android.layoutlib.bridge.impl.DelegateManager;
+import com.ibm.icu.text.DateIntervalFormat;
+import com.ibm.icu.util.DateInterval;
+import com.ibm.icu.util.TimeZone;
+import com.ibm.icu.util.ULocale;
+
+public class DateIntervalFormat_Delegate {
+
+    // ---- delegate manager ----
+    private static final DelegateManager<DateIntervalFormat_Delegate> sManager =
+            new DelegateManager<DateIntervalFormat_Delegate>(DateIntervalFormat_Delegate.class);
+
+    // ---- delegate data ----
+    private DateIntervalFormat mFormat;
+
+
+    // ---- native methods ----
+
+    /*package*/static String formatDateInterval(long address, long fromDate, long toDate) {
+        DateIntervalFormat_Delegate delegate = sManager.getDelegate((int)address);
+        if (delegate == null) {
+            Bridge.getLog().error(LayoutLog.TAG_BROKEN,
+                    "Unable for find native DateIntervalFormat", null);
+            return null;
+        }
+        DateInterval interval = new DateInterval(fromDate, toDate);
+        StringBuffer sb = new StringBuffer();
+        FieldPosition pos = new FieldPosition(0);
+        delegate.mFormat.format(interval, sb, pos);
+        return sb.toString();
+    }
+
+    /*package*/ static long createDateIntervalFormat(String skeleton, String localeName,
+            String tzName) {
+        TimeZone prevDefaultTz = TimeZone.getDefault();
+        TimeZone.setDefault(TimeZone.getTimeZone(tzName));
+        DateIntervalFormat_Delegate newDelegate = new DateIntervalFormat_Delegate();
+        newDelegate.mFormat =
+                DateIntervalFormat.getInstance(skeleton, new ULocale(localeName));
+        TimeZone.setDefault(prevDefaultTz);
+        return sManager.addNewDelegate(newDelegate);
+    }
+
+    /*package*/ static void destroyDateIntervalFormat(long address) {
+        sManager.removeJavaReferenceFor((int)address);
+    }
+
+}

tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java

@@ -187,6 +187,7 @@ public String[] getJavaPkgClasses() {
         "android.text.AndroidBidi",
         "android.util.FloatMath",
         "android.view.Display",
+        "libcore.icu.DateIntervalFormat",
         "libcore.icu.ICU",
     };