Support datalist for date/time input types on Android

content/public/android/java/src/org/chromium/content/browser/input/TwoFieldDatePicker.java

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser.input;
 
 import android.content.Context;
 import android.view.LayoutInflater;
 import android.widget.NumberPicker;
 import android.widget.NumberPicker.OnValueChangeListener;
 import android.text.format.DateUtils;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.FrameLayout;
 import android.widget.NumberPicker;
 
 import java.util.Calendar;
+import java.util.TimeZone;
 
 import org.chromium.content.R;
 
 // This class is heavily based on android.widget.DatePicker.
 public abstract class TwoFieldDatePicker extends FrameLayout {
 
     private NumberPicker mPositionInYearSpinner;
 
     private NumberPicker mYearSpinner;
 
@@ skipping 51 matching lines @@
                     throw new IllegalArgumentException();
                 }
 
                 // now set the date to the adjusted one
                 setCurrentDate(year, positionInYear);
                 updateSpinners();
                 notifyDateChanged();
             }
         };
 
-        mCurrentDate = Calendar.getInstance();
+        mCurrentDate = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
         if (minValue >= maxValue) {
-            mMinDate = Calendar.getInstance();
+            mMinDate = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
             mMinDate.set(0, 0, 1);
-            mMaxDate = Calendar.getInstance();
+            mMaxDate = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
             mMaxDate.set(9999, 0, 1);
         } else {
             mMinDate = createDateFromValue(minValue);
             mMaxDate = createDateFromValue(maxValue);
         }
 
         // month
         mPositionInYearSpinner = (NumberPicker) findViewById(R.id.position_in_year);
         mPositionInYearSpinner.setOnLongPressUpdateInterval(200);
         mPositionInYearSpinner.setOnValueChangedListener(onChangeListener);
@@ skipping 23 matching lines @@
     public boolean isNewDate(int year, int positionInYear) {
         return (getYear() != year || getPositionInYear() != positionInYear);
     }
 
     /**
      * Subclasses know the semantics of @value, and need to return
      * a Calendar corresponding to it.
      */
     protected abstract Calendar createDateFromValue(long value);
 
     /**

[newt (away), 2013/11/04 17:35:55]

javadoc

[keishi, 2013/11/05 07:23:42]

Done.

+     */
+    protected abstract long valueFromDate(int year, int positionInYear);
+
+    /**
      * Updates the current date.
      *
      * @param year The year.
      * @param positionInYear The month or week in year.
      */
     public void updateDate(int year, int positionInYear) {
         if (!isNewDate(year, positionInYear)) {
             return;
         }
         setCurrentDate(year, positionInYear);
@@ skipping 28 matching lines @@
     }
 
     /**
      * @return The selected year.
      */
     public int getYear() {
         return mCurrentDate.get(Calendar.YEAR);
     }
 
     /**
+     * @return The selected value.
+     */
+    public long getValue() {
+        return valueFromDate(getYear(), getPositionInYear());
+    }
+
+    /**
      * @return The selected month or week.
      */
     public abstract int getPositionInYear();
 
     protected abstract int getMaxYear();
 
     protected abstract int getMinYear();
 
     protected abstract int getMaxPositionInYear(int year);
 
@@ skipping 44 matching lines @@
     /**
      * Notifies the listener, if such, for a change in the selected date.
      */
     protected void notifyDateChanged() {
         sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED);
         if (mMonthOrWeekChangedListener != null) {
             mMonthOrWeekChangedListener.onMonthOrWeekChanged(this, getYear(), getPositionInYear());
         }
     }
 }