| /* |
| * Copyright (C) 2014 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.Resources; |
| import android.content.res.TypedArray; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.accessibility.AccessibilityEvent; |
| |
| import java.util.Calendar; |
| |
| import com.android.internal.R; |
| |
| /** |
| * Displays a selectable list of years. |
| */ |
| class YearPickerView extends ListView implements AdapterView.OnItemClickListener, |
| OnDateChangedListener { |
| private DatePickerController mController; |
| private YearAdapter mAdapter; |
| private int mViewSize; |
| private int mChildSize; |
| private int mSelectedPosition = -1; |
| private int mYearSelectedCircleColor; |
| |
| public YearPickerView(Context context) { |
| this(context, null); |
| } |
| |
| public YearPickerView(Context context, AttributeSet attrs) { |
| this(context, attrs, R.attr.listViewStyle); |
| } |
| |
| public YearPickerView(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public YearPickerView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| |
| final LayoutParams frame = new LayoutParams( |
| LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); |
| setLayoutParams(frame); |
| |
| final Resources res = context.getResources(); |
| mViewSize = res.getDimensionPixelOffset(R.dimen.datepicker_view_animator_height); |
| mChildSize = res.getDimensionPixelOffset(R.dimen.datepicker_year_label_height); |
| |
| setVerticalFadingEdgeEnabled(true); |
| setFadingEdgeLength(mChildSize / 3); |
| |
| final int paddingTop = res.getDimensionPixelSize( |
| R.dimen.datepicker_year_picker_padding_top); |
| setPadding(0, paddingTop, 0, 0); |
| |
| setOnItemClickListener(this); |
| setDividerHeight(0); |
| } |
| |
| public void init(DatePickerController controller) { |
| mController = controller; |
| mController.registerOnDateChangedListener(this); |
| |
| mAdapter = new YearAdapter(getContext(), R.layout.year_label_text_view); |
| updateAdapterData(); |
| setAdapter(mAdapter); |
| |
| onDateChanged(); |
| } |
| |
| public void setYearSelectedCircleColor(int color) { |
| if (color != mYearSelectedCircleColor) { |
| mYearSelectedCircleColor = color; |
| } |
| requestLayout(); |
| } |
| |
| public int getYearSelectedCircleColor() { |
| return mYearSelectedCircleColor; |
| } |
| |
| private void updateAdapterData() { |
| mAdapter.clear(); |
| final int maxYear = mController.getMaxYear(); |
| for (int year = mController.getMinYear(); year <= maxYear; year++) { |
| mAdapter.add(year); |
| } |
| } |
| |
| @Override |
| public void onItemClick(AdapterView<?> parent, View view, int position, long id) { |
| mController.tryVibrate(); |
| if (position != mSelectedPosition) { |
| mSelectedPosition = position; |
| mAdapter.notifyDataSetChanged(); |
| } |
| mController.onYearSelected(mAdapter.getItem(position)); |
| } |
| |
| void setItemTextAppearance(int resId) { |
| mAdapter.setItemTextAppearance(resId); |
| } |
| |
| private class YearAdapter extends ArrayAdapter<Integer> { |
| int mItemTextAppearanceResId; |
| |
| public YearAdapter(Context context, int resource) { |
| super(context, resource); |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| TextViewWithCircularIndicator v = (TextViewWithCircularIndicator) |
| super.getView(position, convertView, parent); |
| v.setTextAppearance(getContext(), mItemTextAppearanceResId); |
| v.requestLayout(); |
| int year = getItem(position); |
| boolean selected = mController.getSelectedDay().get(Calendar.YEAR) == year; |
| v.setDrawIndicator(selected); |
| if (selected) { |
| v.setCircleColor(mYearSelectedCircleColor); |
| } |
| return v; |
| } |
| |
| public void setItemTextAppearance(int resId) { |
| mItemTextAppearanceResId = resId; |
| } |
| } |
| |
| public void postSetSelectionCentered(final int position) { |
| postSetSelectionFromTop(position, mViewSize / 2 - mChildSize / 2); |
| } |
| |
| public void postSetSelectionFromTop(final int position, final int offset) { |
| post(new Runnable() { |
| |
| @Override |
| public void run() { |
| setSelectionFromTop(position, offset); |
| requestLayout(); |
| } |
| }); |
| } |
| |
| public int getFirstPositionOffset() { |
| final View firstChild = getChildAt(0); |
| if (firstChild == null) { |
| return 0; |
| } |
| return firstChild.getTop(); |
| } |
| |
| @Override |
| public void onDateChanged() { |
| updateAdapterData(); |
| mAdapter.notifyDataSetChanged(); |
| postSetSelectionCentered( |
| mController.getSelectedDay().get(Calendar.YEAR) - mController.getMinYear()); |
| } |
| |
| @Override |
| public void onInitializeAccessibilityEvent(AccessibilityEvent event) { |
| super.onInitializeAccessibilityEvent(event); |
| if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_SCROLLED) { |
| event.setFromIndex(0); |
| event.setToIndex(0); |
| } |
| } |
| } |