Transfer date/time value to chooser as double

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.text.format.DateUtils;
 import android.view.LayoutInflater;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.FrameLayout;
 import android.widget.NumberPicker;
 import android.widget.NumberPicker.OnValueChangeListener;
 
 import org.chromium.content.R;
 
 import java.util.Calendar;
+import java.util.TimeZone;
 
 /**
  * This class is heavily based on android.widget.DatePicker.
  */
 public abstract class TwoFieldDatePicker extends FrameLayout {
 
     private final NumberPicker mPositionInYearSpinner;
 
     private final NumberPicker mYearSpinner;
 
@@ skipping 16 matching lines @@
         /**
          * Called upon a date change.
          *
          * @param view The view associated with this listener.
          * @param year The year that was set.
          * @param positionInYear The month or week in year.
          */
         void onMonthOrWeekChanged(TwoFieldDatePicker view, int year, int positionInYear);
     }
 
-    public TwoFieldDatePicker(Context context, long minValue, long maxValue) {
+    public TwoFieldDatePicker(Context context, double minValue, double maxValue) {
         super(context, null, android.R.attr.datePickerStyle);
 
         LayoutInflater inflater = (LayoutInflater) context
                 .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         inflater.inflate(R.layout.two_field_date_picker, this, true);
 
         OnValueChangeListener onChangeListener = new OnValueChangeListener() {
             @Override
             public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
                 int year = getYear();
@@ skipping 14 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);
+            mMinDate = getDateForValue(minValue);
+            mMaxDate = getDateForValue(maxValue);
         }
 
         // month
         mPositionInYearSpinner = (NumberPicker) findViewById(R.id.position_in_year);
         mPositionInYearSpinner.setOnLongPressUpdateInterval(200);
         mPositionInYearSpinner.setOnValueChangedListener(onChangeListener);
 
         // year
         mYearSpinner = (NumberPicker) findViewById(R.id.year);
         mYearSpinner.setOnLongPressUpdateInterval(100);
@@ skipping 17 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);
+    protected abstract Calendar getDateForValue(double value);
 
     /**
      * 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;
@@ skipping 94 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());
         }
     }
 }