1 files changed, 87 insertions, 0 deletions
diff --git a/extensions/baseAdapters/src/main/java/android/databinding/adapters/DatePickerBindingAdapter.java b/extensions/baseAdapters/src/main/java/android/databinding/adapters/DatePickerBindingAdapter.java
new file mode 100644
index 00000000..abf345d5
--- /dev/null
+++ b/extensions/baseAdapters/src/main/java/android/databinding/adapters/DatePickerBindingAdapter.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2015 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.databinding.adapters;
+
+import android.databinding.BindingAdapter;
+import android.databinding.InverseBindingListener;
+import android.databinding.InverseBindingMethod;
+import android.databinding.InverseBindingMethods;
+import android.widget.DatePicker;
+import android.widget.DatePicker.OnDateChangedListener;
+import com.android.databinding.library.baseAdapters.R;
+
+@InverseBindingMethods({
+        @InverseBindingMethod(type = DatePicker.class, attribute = "android:year"),
+        @InverseBindingMethod(type = DatePicker.class, attribute = "android:month"),
+        @InverseBindingMethod(type = DatePicker.class, attribute = "android:day", method = "getDayOfMonth"),
+})
+public class DatePickerBindingAdapter {
+    @BindingAdapter(value = {"android:year", "android:month", "android:day",
+            "android:onDateChanged", "android:yearAttrChanged",
+            "android:monthAttrChanged", "android:dayAttrChanged"}, requireAll = false)
+    public static void setListeners(DatePicker view, int year, int month, int day,
+            final OnDateChangedListener listener, final InverseBindingListener yearChanged,
+            final InverseBindingListener monthChanged, final InverseBindingListener dayChanged) {
+        if (year == 0) {
+            year = view.getYear();
+        }
+        if (day == 0) {
+            day = view.getDayOfMonth();
+        }
+        if (yearChanged == null && monthChanged == null && dayChanged == null) {
+            view.init(year, month, day, listener);
+        } else {
+            DateChangedListener oldListener = ListenerUtil.getListener(view, R.id.onDateChanged);
+            if (oldListener == null) {
+                oldListener = new DateChangedListener();
+                ListenerUtil.trackListener(view, oldListener, R.id.onDateChanged);
+            }
+            oldListener.setListeners(listener, yearChanged, monthChanged, dayChanged);
+            view.init(year, month, day, oldListener);
+        }
+    }
+
+    private static class DateChangedListener implements OnDateChangedListener {
+        OnDateChangedListener mListener;
+        InverseBindingListener mYearChanged;
+        InverseBindingListener mMonthChanged;
+        InverseBindingListener mDayChanged;
+
+        public void setListeners(OnDateChangedListener listener, InverseBindingListener yearChanged,
+                InverseBindingListener monthChanged, InverseBindingListener dayChanged) {
+            mListener = listener;
+            mYearChanged = yearChanged;
+            mMonthChanged = monthChanged;
+            mDayChanged = dayChanged;
+        }
+
+        @Override
+        public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
+            if (mListener != null) {
+                mListener.onDateChanged(view, year, monthOfYear, dayOfMonth);
+            }
+            if (mYearChanged != null) {
+                mYearChanged.onChange();
+            }
+            if (mMonthChanged != null) {
+                mMonthChanged.onChange();
+            }
+            if (mDayChanged != null) {
+                mDayChanged.onChange();
+            }
+        }
+    }
+}