Add API 31 sources

Test: None
Change-Id: Ie45894f7a232b2a15e2439b2527ca1813f334cc5
diff --git a/android/widget/CalendarViewMaterialDelegate.java b/android/widget/CalendarViewMaterialDelegate.java
new file mode 100644
index 0000000..b752eb6
--- /dev/null
+++ b/android/widget/CalendarViewMaterialDelegate.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2014 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 android.widget;
+
+import android.annotation.StyleRes;
+import android.content.Context;
+import android.graphics.Rect;
+import android.icu.util.Calendar;
+import android.util.AttributeSet;
+import android.widget.DayPickerView.OnDaySelectedListener;
+
+class CalendarViewMaterialDelegate extends CalendarView.AbstractCalendarViewDelegate {
+    private final DayPickerView mDayPickerView;
+
+    private CalendarView.OnDateChangeListener mOnDateChangeListener;
+
+    public CalendarViewMaterialDelegate(CalendarView delegator, Context context, AttributeSet attrs,
+            int defStyleAttr, int defStyleRes) {
+        super(delegator, context);
+
+        mDayPickerView = new DayPickerView(context, attrs, defStyleAttr, defStyleRes);
+        mDayPickerView.setOnDaySelectedListener(mOnDaySelectedListener);
+
+        delegator.addView(mDayPickerView);
+    }
+
+    @Override
+    public void setWeekDayTextAppearance(@StyleRes int resId) {
+        mDayPickerView.setDayOfWeekTextAppearance(resId);
+    }
+
+    @StyleRes
+    @Override
+    public int getWeekDayTextAppearance() {
+        return mDayPickerView.getDayOfWeekTextAppearance();
+    }
+
+    @Override
+    public void setDateTextAppearance(@StyleRes int resId) {
+        mDayPickerView.setDayTextAppearance(resId);
+    }
+
+    @StyleRes
+    @Override
+    public int getDateTextAppearance() {
+        return mDayPickerView.getDayTextAppearance();
+    }
+
+    @Override
+    public void setMinDate(long minDate) {
+        mDayPickerView.setMinDate(minDate);
+    }
+
+    @Override
+    public long getMinDate() {
+        return mDayPickerView.getMinDate();
+    }
+
+    @Override
+    public void setMaxDate(long maxDate) {
+        mDayPickerView.setMaxDate(maxDate);
+    }
+
+    @Override
+    public long getMaxDate() {
+        return mDayPickerView.getMaxDate();
+    }
+
+    @Override
+    public void setFirstDayOfWeek(int firstDayOfWeek) {
+        mDayPickerView.setFirstDayOfWeek(firstDayOfWeek);
+    }
+
+    @Override
+    public int getFirstDayOfWeek() {
+        return mDayPickerView.getFirstDayOfWeek();
+    }
+
+    @Override
+    public void setDate(long date) {
+        mDayPickerView.setDate(date, true);
+    }
+
+    @Override
+    public void setDate(long date, boolean animate, boolean center) {
+        mDayPickerView.setDate(date, animate);
+    }
+
+    @Override
+    public long getDate() {
+        return mDayPickerView.getDate();
+    }
+
+    @Override
+    public void setOnDateChangeListener(CalendarView.OnDateChangeListener listener) {
+        mOnDateChangeListener = listener;
+    }
+
+    @Override
+    public boolean getBoundsForDate(long date, Rect outBounds) {
+        boolean result = mDayPickerView.getBoundsForDate(date, outBounds);
+        if (result) {
+            // Found the date in the current picker. Now need to offset vertically to return correct
+            // bounds in the coordinate system of the entire layout
+            final int[] dayPickerPositionOnScreen = new int[2];
+            final int[] delegatorPositionOnScreen = new int[2];
+            mDayPickerView.getLocationOnScreen(dayPickerPositionOnScreen);
+            mDelegator.getLocationOnScreen(delegatorPositionOnScreen);
+            final int extraVerticalOffset =
+                    dayPickerPositionOnScreen[1] - delegatorPositionOnScreen[1];
+            outBounds.top += extraVerticalOffset;
+            outBounds.bottom += extraVerticalOffset;
+            return true;
+        }
+        return false;
+    }
+
+    private final OnDaySelectedListener mOnDaySelectedListener = new OnDaySelectedListener() {
+        @Override
+        public void onDaySelected(DayPickerView view, Calendar day) {
+            if (mOnDateChangeListener != null) {
+                final int year = day.get(Calendar.YEAR);
+                final int month = day.get(Calendar.MONTH);
+                final int dayOfMonth = day.get(Calendar.DAY_OF_MONTH);
+                mOnDateChangeListener.onSelectedDayChange(mDelegator, year, month, dayOfMonth);
+            }
+        }
+    };
+}