Move *Picker.java and *PickerDialog.java to ui/android/java/... - Part1

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;
-
-    private OnMonthOrWeekChangedListener mMonthOrWeekChangedListener;
-
-    // It'd be nice to use android.text.Time like in other Dialogs but
-    // it suffers from the 2038 effect so it would prevent us from
-    // having dates over 2038.
-    private Calendar mMinDate;
-
-    private Calendar mMaxDate;
-
-    private Calendar mCurrentDate;
-
-    /**
-     * The callback used to indicate the user changes\d the date.
-     */
-    public interface OnMonthOrWeekChangedListener {
-
-        /**
-         * 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, 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();
-                int positionInYear = getPositionInYear();
-                // take care of wrapping of days and months to update greater fields
-                if (picker == mPositionInYearSpinner) {
-                    positionInYear = newVal;
-                    if (oldVal == picker.getMaxValue() && newVal == picker.getMinValue()) {
-                        year += 1;
-                        positionInYear = getMinPositionInYear(year);
-                    } else if (oldVal == picker.getMinValue() && newVal == picker.getMaxValue()) {
-                        year -= 1;
-                        positionInYear = getMaxPositionInYear(year);
-                    }
-                } else if (picker == mYearSpinner) {
-                    year = newVal;
-                } else {
-                    throw new IllegalArgumentException();
-                }
-
-                // now set the date to the adjusted one
-                setCurrentDate(year, positionInYear);
-                updateSpinners();
-                notifyDateChanged();
-            }
-        };
-
-        mCurrentDate = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-        if (minValue >= maxValue) {
-            mMinDate = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-            mMinDate.set(0, 0, 1);
-            mMaxDate = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-            mMaxDate.set(9999, 0, 1);
-        } else {
-            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);
-        mYearSpinner.setOnValueChangedListener(onChangeListener);
-    }
-
-    /**
-     * Initialize the state. If the provided values designate an inconsistent
-     * date the values are normalized before updating the spinners.
-     *
-     * @param year The initial year.
-     * @param positionInYear The initial month <strong>starting from zero</strong> or week in year.
-     * @param onMonthOrWeekChangedListener How user is notified date is changed by
-     *            user, can be null.
-     */
-    public void init(int year, int positionInYear,
-            OnMonthOrWeekChangedListener onMonthOrWeekChangedListener) {
-        setCurrentDate(year, positionInYear);
-        updateSpinners();
-        mMonthOrWeekChangedListener = onMonthOrWeekChangedListener;
-    }
-
-    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 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;
-        }
-        setCurrentDate(year, positionInYear);
-        updateSpinners();
-        notifyDateChanged();
-    }
-
-    /**
-     * Subclasses know the semantics of @positionInYear, and need to update @mCurrentDate to the
-     * appropriate date.
-     */
-    protected abstract void setCurrentDate(int year, int positionInYear);
-
-    protected void setCurrentDate(Calendar date) {
-        mCurrentDate = date;
-    }
-
-    @Override
-    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
-        onPopulateAccessibilityEvent(event);
-        return true;
-    }
-
-    @Override
-    public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
-        super.onPopulateAccessibilityEvent(event);
-
-        final int flags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR;
-        String selectedDateUtterance = DateUtils.formatDateTime(getContext(),
-                mCurrentDate.getTimeInMillis(), flags);
-        event.getText().add(selectedDateUtterance);
-    }
-
-    /**
-     * @return The selected year.
-     */
-    public int getYear() {
-        return mCurrentDate.get(Calendar.YEAR);
-    }
-
-    /**
-     * @return The selected month or week.
-     */
-    public abstract int getPositionInYear();
-
-    protected abstract int getMaxYear();
-
-    protected abstract int getMinYear();
-
-    protected abstract int getMaxPositionInYear(int year);
-
-    protected abstract int getMinPositionInYear(int year);
-
-    protected Calendar getMaxDate() {
-        return mMaxDate;
-    }
-
-    protected Calendar getMinDate() {
-        return mMinDate;
-    }
-
-    protected Calendar getCurrentDate() {
-        return mCurrentDate;
-    }
-
-    protected NumberPicker getPositionInYearSpinner() {
-        return mPositionInYearSpinner;
-    }
-
-    protected NumberPicker getYearSpinner() {
-        return mYearSpinner;
-    }
-
-    /**
-     * This method should be subclassed to update the spinners based on mCurrentDate.
-     */
-    protected void updateSpinners() {
-        mPositionInYearSpinner.setDisplayedValues(null);
-
-        // set the spinner ranges respecting the min and max dates
-        mPositionInYearSpinner.setMinValue(getMinPositionInYear(getYear()));
-        mPositionInYearSpinner.setMaxValue(getMaxPositionInYear(getYear()));
-        mPositionInYearSpinner.setWrapSelectorWheel(
-                !mCurrentDate.equals(mMinDate) && !mCurrentDate.equals(mMaxDate));
-
-        // year spinner range does not change based on the current date
-        mYearSpinner.setMinValue(getMinYear());
-        mYearSpinner.setMaxValue(getMaxYear());
-        mYearSpinner.setWrapSelectorWheel(false);
-
-        // set the spinner values
-        mYearSpinner.setValue(getYear());
-        mPositionInYearSpinner.setValue(getPositionInYear());
-    }
-
-    /**
-     * 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());
-        }
-    }
-}