| /* |
| * Copyright (C) 2015 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 com.android.deskclock.alarms.dataadapter; |
| |
| import android.content.Context; |
| import android.database.Cursor; |
| import android.os.Bundle; |
| import android.os.Vibrator; |
| import android.support.v7.widget.RecyclerView; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| |
| import com.android.deskclock.LogUtils; |
| import com.android.deskclock.R; |
| import com.android.deskclock.alarms.AlarmTimeClickHandler; |
| import com.android.deskclock.alarms.ScrollHandler; |
| import com.android.deskclock.provider.Alarm; |
| import com.android.deskclock.provider.AlarmInstance; |
| |
| /** |
| * Data adapter for alarm time items. |
| */ |
| public final class AlarmTimeAdapter extends RecyclerView.Adapter<AlarmTimeViewHolder> { |
| private static final String TAG = "CwAlarm"; |
| private static final String KEY_EXPANDED_ID = "expandedId"; |
| private static final int VIEW_TYPE_ALARM_TIME_COLLAPSED = R.layout.alarm_time_collapsed; |
| private static final int VIEW_TYPE_ALARM_TIME_EXPANDED = R.layout.alarm_time_expanded; |
| |
| private final Context mContext; |
| private final LayoutInflater mInflater; |
| |
| private final AlarmTimeClickHandler mAlarmTimeClickHandler; |
| private final ScrollHandler mScrollHandler; |
| |
| private final boolean mHasVibrator; |
| private int mExpandedPosition = -1; |
| private long mExpandedId = Alarm.INVALID_ID; |
| private Cursor mCursor; |
| |
| public AlarmTimeAdapter(Context context, Bundle savedState, |
| AlarmTimeClickHandler alarmTimeClickHandler, ScrollHandler smoothScrollController) { |
| mContext = context; |
| mInflater = LayoutInflater.from(context); |
| mScrollHandler = smoothScrollController; |
| mAlarmTimeClickHandler = alarmTimeClickHandler; |
| mHasVibrator = ((Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE)) |
| .hasVibrator(); |
| if (savedState != null) { |
| mExpandedId = savedState.getLong(KEY_EXPANDED_ID, Alarm.INVALID_ID); |
| } |
| |
| setHasStableIds(true); |
| } |
| |
| @Override |
| public AlarmTimeViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { |
| final View v = mInflater.inflate(viewType, parent, false /* attachToRoot */); |
| if (viewType == VIEW_TYPE_ALARM_TIME_COLLAPSED) { |
| return new CollapsedAlarmViewHolder(v, mAlarmTimeClickHandler, this); |
| } else { |
| return new ExpandedAlarmViewHolder(v, mHasVibrator, mAlarmTimeClickHandler, this); |
| } |
| } |
| |
| @Override |
| public void onViewRecycled(AlarmTimeViewHolder viewHolder) { |
| super.onViewRecycled(viewHolder); |
| viewHolder.clearData(); |
| } |
| |
| @Override |
| public void onBindViewHolder(AlarmTimeViewHolder viewHolder, int position) { |
| if (!mCursor.moveToPosition(position)) { |
| LogUtils.e(TAG, "Failed to bind alarm " + position); |
| return; |
| } |
| final Alarm alarm = new Alarm(mCursor); |
| final AlarmInstance alarmInstance = alarm.canPreemptivelyDismiss() |
| ? new AlarmInstance(mCursor, true /* joinedTable */) : null; |
| viewHolder.bindAlarm(mContext, alarm, alarmInstance); |
| } |
| |
| @Override |
| public int getItemCount() { |
| return mCursor == null ? 0 : mCursor.getCount(); |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| if (mCursor == null || !mCursor.moveToPosition(position)) { |
| return RecyclerView.NO_ID; |
| } |
| // TODO: Directly read id instead of instantiating Alarm object. |
| return new Alarm(mCursor).id; |
| } |
| |
| @Override |
| public int getItemViewType(int position) { |
| final long stableId = getItemId(position); |
| return stableId != RecyclerView.NO_ID && stableId == mExpandedId |
| ? VIEW_TYPE_ALARM_TIME_EXPANDED : VIEW_TYPE_ALARM_TIME_COLLAPSED; |
| } |
| |
| public void saveInstance(Bundle outState) { |
| outState.putLong(KEY_EXPANDED_ID, mExpandedId); |
| } |
| |
| /** |
| * Request the UI to expand the alarm at selected position and scroll it into view. |
| */ |
| public void expand(int position) { |
| final long stableId = getItemId(position); |
| if (mExpandedId == stableId) { |
| return; |
| } |
| mExpandedId = stableId; |
| mScrollHandler.smoothScrollTo(position); |
| if (mExpandedPosition >= 0) { |
| notifyItemChanged(mExpandedPosition); |
| } |
| mExpandedPosition = position; |
| notifyItemChanged(position); |
| } |
| |
| public void collapse(int position) { |
| mExpandedId = Alarm.INVALID_ID; |
| mExpandedPosition = -1; |
| notifyItemChanged(position); |
| } |
| |
| /** |
| * Swaps the adapter to a new data source. |
| * |
| * @param cursor A cursor generated by Cursor loader from {@link Alarm#getAlarmsCursorLoader}. |
| */ |
| public void swapCursor(Cursor cursor) { |
| if (mCursor == cursor) { |
| return; |
| } |
| if (mCursor != null) { |
| mCursor.close(); |
| } |
| mCursor = cursor; |
| notifyDataSetChanged(); |
| } |
| } |