/* * Copyright (C) 2016 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.content.Context; import android.content.res.Configuration; import android.content.res.TypedArray; import android.icu.util.Calendar; import android.os.Parcelable; import android.text.InputType; import android.text.TextUtils; import android.text.format.DateFormat; import android.text.format.DateUtils; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.View; import android.view.accessibility.AccessibilityEvent; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputMethodManager; import android.widget.DatePicker.AbstractDatePickerDelegate; import android.widget.NumberPicker.OnValueChangeListener; import java.text.DateFormatSymbols; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Arrays; import java.util.Locale; import libcore.icu.ICU; /** * A delegate implementing the basic DatePicker */ class DatePickerSpinnerDelegate extends AbstractDatePickerDelegate { private static final String DATE_FORMAT = "MM/dd/yyyy"; private static final int DEFAULT_START_YEAR = 1900; private static final int DEFAULT_END_YEAR = 2100; private static final boolean DEFAULT_CALENDAR_VIEW_SHOWN = true; private static final boolean DEFAULT_SPINNERS_SHOWN = true; private static final boolean DEFAULT_ENABLED_STATE = true; private final LinearLayout mSpinners; private final NumberPicker mDaySpinner; private final NumberPicker mMonthSpinner; private final NumberPicker mYearSpinner; private final EditText mDaySpinnerInput; private final EditText mMonthSpinnerInput; private final EditText mYearSpinnerInput; private final CalendarView mCalendarView; private String[] mShortMonths; private final java.text.DateFormat mDateFormat = new SimpleDateFormat(DATE_FORMAT); private int mNumberOfMonths; private Calendar mTempDate; private Calendar mMinDate; private Calendar mMaxDate; private Calendar mCurrentDate; private boolean mIsEnabled = DEFAULT_ENABLED_STATE; DatePickerSpinnerDelegate(DatePicker delegator, Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(delegator, context); mDelegator = delegator; mContext = context; // initialization based on locale setCurrentLocale(Locale.getDefault()); final TypedArray attributesArray = context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.DatePicker, defStyleAttr, defStyleRes); boolean spinnersShown = attributesArray.getBoolean(com.android.internal.R.styleable.DatePicker_spinnersShown, DEFAULT_SPINNERS_SHOWN); boolean calendarViewShown = attributesArray.getBoolean( com.android.internal.R.styleable.DatePicker_calendarViewShown, DEFAULT_CALENDAR_VIEW_SHOWN); int startYear = attributesArray.getInt(com.android.internal.R.styleable.DatePicker_startYear, DEFAULT_START_YEAR); int endYear = attributesArray.getInt(com.android.internal.R.styleable.DatePicker_endYear, DEFAULT_END_YEAR); String minDate = attributesArray.getString(com.android.internal.R.styleable.DatePicker_minDate); String maxDate = attributesArray.getString(com.android.internal.R.styleable.DatePicker_maxDate); int layoutResourceId = attributesArray.getResourceId( com.android.internal.R.styleable.DatePicker_legacyLayout, com.android.internal.R.layout.date_picker_legacy); attributesArray.recycle(); LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); inflater.inflate(layoutResourceId, mDelegator, true); OnValueChangeListener onChangeListener = new OnValueChangeListener() { public void onValueChange(NumberPicker picker, int oldVal, int newVal) { updateInputState(); mTempDate.setTimeInMillis(mCurrentDate.getTimeInMillis()); // take care of wrapping of days and months to update greater fields if (picker == mDaySpinner) { int maxDayOfMonth = mTempDate.getActualMaximum(Calendar.DAY_OF_MONTH); if (oldVal == maxDayOfMonth && newVal == 1) { mTempDate.add(Calendar.DAY_OF_MONTH, 1); } else if (oldVal == 1 && newVal == maxDayOfMonth) { mTempDate.add(Calendar.DAY_OF_MONTH, -1); } else { mTempDate.add(Calendar.DAY_OF_MONTH, newVal - oldVal); } } else if (picker == mMonthSpinner) { if (oldVal == 11 && newVal == 0) { mTempDate.add(Calendar.MONTH, 1); } else if (oldVal == 0 && newVal == 11) { mTempDate.add(Calendar.MONTH, -1); } else { mTempDate.add(Calendar.MONTH, newVal - oldVal); } } else if (picker == mYearSpinner) { mTempDate.set(Calendar.YEAR, newVal); } else { throw new IllegalArgumentException(); } // now set the date to the adjusted one setDate(mTempDate.get(Calendar.YEAR), mTempDate.get(Calendar.MONTH), mTempDate.get(Calendar.DAY_OF_MONTH)); updateSpinners(); updateCalendarView(); notifyDateChanged(); } }; mSpinners = (LinearLayout) mDelegator.findViewById(com.android.internal.R.id.pickers); // calendar view day-picker mCalendarView = (CalendarView) mDelegator.findViewById(com.android.internal.R.id.calendar_view); mCalendarView.setOnDateChangeListener(new CalendarView.OnDateChangeListener() { public void onSelectedDayChange(CalendarView view, int year, int month, int monthDay) { setDate(year, month, monthDay); updateSpinners(); notifyDateChanged(); } }); // day mDaySpinner = (NumberPicker) mDelegator.findViewById(com.android.internal.R.id.day); mDaySpinner.setFormatter(NumberPicker.getTwoDigitFormatter()); mDaySpinner.setOnLongPressUpdateInterval(100); mDaySpinner.setOnValueChangedListener(onChangeListener); mDaySpinnerInput = (EditText) mDaySpinner.findViewById(com.android.internal.R.id.numberpicker_input); // month mMonthSpinner = (NumberPicker) mDelegator.findViewById(com.android.internal.R.id.month); mMonthSpinner.setMinValue(0); mMonthSpinner.setMaxValue(mNumberOfMonths - 1); mMonthSpinner.setDisplayedValues(mShortMonths); mMonthSpinner.setOnLongPressUpdateInterval(200); mMonthSpinner.setOnValueChangedListener(onChangeListener); mMonthSpinnerInput = (EditText) mMonthSpinner.findViewById(com.android.internal.R.id.numberpicker_input); // year mYearSpinner = (NumberPicker) mDelegator.findViewById(com.android.internal.R.id.year); mYearSpinner.setOnLongPressUpdateInterval(100); mYearSpinner.setOnValueChangedListener(onChangeListener); mYearSpinnerInput = (EditText) mYearSpinner.findViewById(com.android.internal.R.id.numberpicker_input); // show only what the user required but make sure we // show something and the spinners have higher priority if (!spinnersShown && !calendarViewShown) { setSpinnersShown(true); } else { setSpinnersShown(spinnersShown); setCalendarViewShown(calendarViewShown); } // set the min date giving priority of the minDate over startYear mTempDate.clear(); if (!TextUtils.isEmpty(minDate)) { if (!parseDate(minDate, mTempDate)) { mTempDate.set(startYear, 0, 1); } } else { mTempDate.set(startYear, 0, 1); } setMinDate(mTempDate.getTimeInMillis()); // set the max date giving priority of the maxDate over endYear mTempDate.clear(); if (!TextUtils.isEmpty(maxDate)) { if (!parseDate(maxDate, mTempDate)) { mTempDate.set(endYear, 11, 31); } } else { mTempDate.set(endYear, 11, 31); } setMaxDate(mTempDate.getTimeInMillis()); // initialize to current date mCurrentDate.setTimeInMillis(System.currentTimeMillis()); init(mCurrentDate.get(Calendar.YEAR), mCurrentDate.get(Calendar.MONTH), mCurrentDate .get(Calendar.DAY_OF_MONTH), null); // re-order the number spinners to match the current date format reorderSpinners(); // accessibility setContentDescriptions(); // If not explicitly specified this view is important for accessibility. if (mDelegator.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { mDelegator.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); } } @Override public void init(int year, int monthOfYear, int dayOfMonth, DatePicker.OnDateChangedListener onDateChangedListener) { setDate(year, monthOfYear, dayOfMonth); updateSpinners(); updateCalendarView(); mOnDateChangedListener = onDateChangedListener; } @Override public void updateDate(int year, int month, int dayOfMonth) { if (!isNewDate(year, month, dayOfMonth)) { return; } setDate(year, month, dayOfMonth); updateSpinners(); updateCalendarView(); notifyDateChanged(); } @Override public int getYear() { return mCurrentDate.get(Calendar.YEAR); } @Override public int getMonth() { return mCurrentDate.get(Calendar.MONTH); } @Override public int getDayOfMonth() { return mCurrentDate.get(Calendar.DAY_OF_MONTH); } @Override public void setFirstDayOfWeek(int firstDayOfWeek) { mCalendarView.setFirstDayOfWeek(firstDayOfWeek); } @Override public int getFirstDayOfWeek() { return mCalendarView.getFirstDayOfWeek(); } @Override public void setMinDate(long minDate) { mTempDate.setTimeInMillis(minDate); if (mTempDate.get(Calendar.YEAR) == mMinDate.get(Calendar.YEAR) && mTempDate.get(Calendar.DAY_OF_YEAR) == mMinDate.get(Calendar.DAY_OF_YEAR)) { // Same day, no-op. return; } mMinDate.setTimeInMillis(minDate); mCalendarView.setMinDate(minDate); if (mCurrentDate.before(mMinDate)) { mCurrentDate.setTimeInMillis(mMinDate.getTimeInMillis()); updateCalendarView(); } updateSpinners(); } @Override public Calendar getMinDate() { final Calendar minDate = Calendar.getInstance(); minDate.setTimeInMillis(mCalendarView.getMinDate()); return minDate; } @Override public void setMaxDate(long maxDate) { mTempDate.setTimeInMillis(maxDate); if (mTempDate.get(Calendar.YEAR) == mMaxDate.get(Calendar.YEAR) && mTempDate.get(Calendar.DAY_OF_YEAR) == mMaxDate.get(Calendar.DAY_OF_YEAR)) { // Same day, no-op. return; } mMaxDate.setTimeInMillis(maxDate); mCalendarView.setMaxDate(maxDate); if (mCurrentDate.after(mMaxDate)) { mCurrentDate.setTimeInMillis(mMaxDate.getTimeInMillis()); updateCalendarView(); } updateSpinners(); } @Override public Calendar getMaxDate() { final Calendar maxDate = Calendar.getInstance(); maxDate.setTimeInMillis(mCalendarView.getMaxDate()); return maxDate; } @Override public void setEnabled(boolean enabled) { mDaySpinner.setEnabled(enabled); mMonthSpinner.setEnabled(enabled); mYearSpinner.setEnabled(enabled); mCalendarView.setEnabled(enabled); mIsEnabled = enabled; } @Override public boolean isEnabled() { return mIsEnabled; } @Override public CalendarView getCalendarView() { return mCalendarView; } @Override public void setCalendarViewShown(boolean shown) { mCalendarView.setVisibility(shown ? View.VISIBLE : View.GONE); } @Override public boolean getCalendarViewShown() { return (mCalendarView.getVisibility() == View.VISIBLE); } @Override public void setSpinnersShown(boolean shown) { mSpinners.setVisibility(shown ? View.VISIBLE : View.GONE); } @Override public boolean getSpinnersShown() { return mSpinners.isShown(); } @Override public void onConfigurationChanged(Configuration newConfig) { setCurrentLocale(newConfig.locale); } @Override public Parcelable onSaveInstanceState(Parcelable superState) { return new SavedState(superState, getYear(), getMonth(), getDayOfMonth(), getMinDate().getTimeInMillis(), getMaxDate().getTimeInMillis()); } @Override public void onRestoreInstanceState(Parcelable state) { if (state instanceof SavedState) { final SavedState ss = (SavedState) state; setDate(ss.getSelectedYear(), ss.getSelectedMonth(), ss.getSelectedDay()); updateSpinners(); updateCalendarView(); } } @Override public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { onPopulateAccessibilityEvent(event); return true; } @Override public void onPopulateAccessibilityEvent(AccessibilityEvent event) { final int flags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR; String selectedDateUtterance = DateUtils.formatDateTime(mContext, mCurrentDate.getTimeInMillis(), flags); event.getText().add(selectedDateUtterance); } /** * Sets the current locale. * * @param locale The current locale. */ @Override protected void setCurrentLocale(Locale locale) { super.setCurrentLocale(locale); mTempDate = getCalendarForLocale(mTempDate, locale); mMinDate = getCalendarForLocale(mMinDate, locale); mMaxDate = getCalendarForLocale(mMaxDate, locale); mCurrentDate = getCalendarForLocale(mCurrentDate, locale); mNumberOfMonths = mTempDate.getActualMaximum(Calendar.MONTH) + 1; mShortMonths = new DateFormatSymbols().getShortMonths(); if (usingNumericMonths()) { // We're in a locale where a date should either be all-numeric, or all-text. // All-text would require custom NumberPicker formatters for day and year. mShortMonths = new String[mNumberOfMonths]; for (int i = 0; i < mNumberOfMonths; ++i) { mShortMonths[i] = String.format("%d", i + 1); } } } /** * Tests whether the current locale is one where there are no real month names, * such as Chinese, Japanese, or Korean locales. */ private boolean usingNumericMonths() { return Character.isDigit(mShortMonths[Calendar.JANUARY].charAt(0)); } /** * Gets a calendar for locale bootstrapped with the value of a given calendar. * * @param oldCalendar The old calendar. * @param locale The locale. */ private Calendar getCalendarForLocale(Calendar oldCalendar, Locale locale) { if (oldCalendar == null) { return Calendar.getInstance(locale); } else { final long currentTimeMillis = oldCalendar.getTimeInMillis(); Calendar newCalendar = Calendar.getInstance(locale); newCalendar.setTimeInMillis(currentTimeMillis); return newCalendar; } } /** * Reorders the spinners according to the date format that is * explicitly set by the user and if no such is set fall back * to the current locale's default format. */ private void reorderSpinners() { mSpinners.removeAllViews(); // We use numeric spinners for year and day, but textual months. Ask icu4c what // order the user's locale uses for that combination. http://b/7207103. String pattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), "yyyyMMMdd"); char[] order = ICU.getDateFormatOrder(pattern); final int spinnerCount = order.length; for (int i = 0; i < spinnerCount; i++) { switch (order[i]) { case 'd': mSpinners.addView(mDaySpinner); setImeOptions(mDaySpinner, spinnerCount, i); break; case 'M': mSpinners.addView(mMonthSpinner); setImeOptions(mMonthSpinner, spinnerCount, i); break; case 'y': mSpinners.addView(mYearSpinner); setImeOptions(mYearSpinner, spinnerCount, i); break; default: throw new IllegalArgumentException(Arrays.toString(order)); } } } /** * Parses the given date and in case of success sets the result * to the outDate. * * @return True if the date was parsed. */ private boolean parseDate(String date, Calendar outDate) { try { outDate.setTime(mDateFormat.parse(date)); return true; } catch (ParseException e) { e.printStackTrace(); return false; } } private boolean isNewDate(int year, int month, int dayOfMonth) { return (mCurrentDate.get(Calendar.YEAR) != year || mCurrentDate.get(Calendar.MONTH) != month || mCurrentDate.get(Calendar.DAY_OF_MONTH) != dayOfMonth); } private void setDate(int year, int month, int dayOfMonth) { mCurrentDate.set(year, month, dayOfMonth); if (mCurrentDate.before(mMinDate)) { mCurrentDate.setTimeInMillis(mMinDate.getTimeInMillis()); } else if (mCurrentDate.after(mMaxDate)) { mCurrentDate.setTimeInMillis(mMaxDate.getTimeInMillis()); } } private void updateSpinners() { // set the spinner ranges respecting the min and max dates if (mCurrentDate.equals(mMinDate)) { mDaySpinner.setMinValue(mCurrentDate.get(Calendar.DAY_OF_MONTH)); mDaySpinner.setMaxValue(mCurrentDate.getActualMaximum(Calendar.DAY_OF_MONTH)); mDaySpinner.setWrapSelectorWheel(false); mMonthSpinner.setDisplayedValues(null); mMonthSpinner.setMinValue(mCurrentDate.get(Calendar.MONTH)); mMonthSpinner.setMaxValue(mCurrentDate.getActualMaximum(Calendar.MONTH)); mMonthSpinner.setWrapSelectorWheel(false); } else if (mCurrentDate.equals(mMaxDate)) { mDaySpinner.setMinValue(mCurrentDate.getActualMinimum(Calendar.DAY_OF_MONTH)); mDaySpinner.setMaxValue(mCurrentDate.get(Calendar.DAY_OF_MONTH)); mDaySpinner.setWrapSelectorWheel(false); mMonthSpinner.setDisplayedValues(null); mMonthSpinner.setMinValue(mCurrentDate.getActualMinimum(Calendar.MONTH)); mMonthSpinner.setMaxValue(mCurrentDate.get(Calendar.MONTH)); mMonthSpinner.setWrapSelectorWheel(false); } else { mDaySpinner.setMinValue(1); mDaySpinner.setMaxValue(mCurrentDate.getActualMaximum(Calendar.DAY_OF_MONTH)); mDaySpinner.setWrapSelectorWheel(true); mMonthSpinner.setDisplayedValues(null); mMonthSpinner.setMinValue(0); mMonthSpinner.setMaxValue(11); mMonthSpinner.setWrapSelectorWheel(true); } // make sure the month names are a zero based array // with the months in the month spinner String[] displayedValues = Arrays.copyOfRange(mShortMonths, mMonthSpinner.getMinValue(), mMonthSpinner.getMaxValue() + 1); mMonthSpinner.setDisplayedValues(displayedValues); // year spinner range does not change based on the current date mYearSpinner.setMinValue(mMinDate.get(Calendar.YEAR)); mYearSpinner.setMaxValue(mMaxDate.get(Calendar.YEAR)); mYearSpinner.setWrapSelectorWheel(false); // set the spinner values mYearSpinner.setValue(mCurrentDate.get(Calendar.YEAR)); mMonthSpinner.setValue(mCurrentDate.get(Calendar.MONTH)); mDaySpinner.setValue(mCurrentDate.get(Calendar.DAY_OF_MONTH)); if (usingNumericMonths()) { mMonthSpinnerInput.setRawInputType(InputType.TYPE_CLASS_NUMBER); } } /** * Updates the calendar view with the current date. */ private void updateCalendarView() { mCalendarView.setDate(mCurrentDate.getTimeInMillis(), false, false); } /** * Notifies the listener, if such, for a change in the selected date. */ private void notifyDateChanged() { mDelegator.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED); if (mOnDateChangedListener != null) { mOnDateChangedListener.onDateChanged(mDelegator, getYear(), getMonth(), getDayOfMonth()); } } /** * Sets the IME options for a spinner based on its ordering. * * @param spinner The spinner. * @param spinnerCount The total spinner count. * @param spinnerIndex The index of the given spinner. */ private void setImeOptions(NumberPicker spinner, int spinnerCount, int spinnerIndex) { final int imeOptions; if (spinnerIndex < spinnerCount - 1) { imeOptions = EditorInfo.IME_ACTION_NEXT; } else { imeOptions = EditorInfo.IME_ACTION_DONE; } TextView input = (TextView) spinner.findViewById(com.android.internal.R.id.numberpicker_input); input.setImeOptions(imeOptions); } private void setContentDescriptions() { // Day trySetContentDescription(mDaySpinner, com.android.internal.R.id.increment, com.android.internal.R.string.date_picker_increment_day_button); trySetContentDescription(mDaySpinner, com.android.internal.R.id.decrement, com.android.internal.R.string.date_picker_decrement_day_button); // Month trySetContentDescription(mMonthSpinner, com.android.internal.R.id.increment, com.android.internal.R.string.date_picker_increment_month_button); trySetContentDescription(mMonthSpinner, com.android.internal.R.id.decrement, com.android.internal.R.string.date_picker_decrement_month_button); // Year trySetContentDescription(mYearSpinner, com.android.internal.R.id.increment, com.android.internal.R.string.date_picker_increment_year_button); trySetContentDescription(mYearSpinner, com.android.internal.R.id.decrement, com.android.internal.R.string.date_picker_decrement_year_button); } private void trySetContentDescription(View root, int viewId, int contDescResId) { View target = root.findViewById(viewId); if (target != null) { target.setContentDescription(mContext.getString(contDescResId)); } } private void updateInputState() { // Make sure that if the user changes the value and the IME is active // for one of the inputs if this widget, the IME is closed. If the user // changed the value via the IME and there is a next input the IME will // be shown, otherwise the user chose another means of changing the // value and having the IME up makes no sense. InputMethodManager inputMethodManager = InputMethodManager.peekInstance(); if (inputMethodManager != null) { if (inputMethodManager.isActive(mYearSpinnerInput)) { mYearSpinnerInput.clearFocus(); inputMethodManager.hideSoftInputFromWindow(mDelegator.getWindowToken(), 0); } else if (inputMethodManager.isActive(mMonthSpinnerInput)) { mMonthSpinnerInput.clearFocus(); inputMethodManager.hideSoftInputFromWindow(mDelegator.getWindowToken(), 0); } else if (inputMethodManager.isActive(mDaySpinnerInput)) { mDaySpinnerInput.clearFocus(); inputMethodManager.hideSoftInputFromWindow(mDelegator.getWindowToken(), 0); } } } }