| /* |
| * Copyright (C) 2011 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.example.android.apis.accessibility; |
| |
| import com.example.android.apis.R; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.widget.BaseAdapter; |
| import android.widget.CheckBox; |
| import android.widget.ListView; |
| import android.widget.TextView; |
| |
| |
| /** Acts as a go-between for all AccessibilityEvents sent from items in the ListView, providing the |
| * option of sending more context to an AccessibilityService by adding more AccessiblityRecords to |
| * an event. |
| */ |
| public class TaskListView extends ListView { |
| |
| public TaskListView(Context context, AttributeSet attributeSet) { |
| super(context, attributeSet); |
| } |
| |
| /** |
| * This method will fire whenever a child event wants to send an AccessibilityEvent. As a |
| * result, it's a great place to add more AccessibilityRecords, if you want. In this case, |
| * the code is grabbing the position of the item in the list, and assuming that to be the |
| * priority for the task. |
| */ |
| @Override |
| public boolean onRequestSendAccessibilityEvent(View child, AccessibilityEvent event) { |
| // Add a record for ourselves as well. |
| AccessibilityEvent record = AccessibilityEvent.obtain(); |
| super.onInitializeAccessibilityEvent(record); |
| |
| int priority = (Integer) child.getTag(); |
| String priorityStr = "Priority: " + priority; |
| record.setContentDescription(priorityStr); |
| |
| event.appendRecord(record); |
| return true; |
| } |
| } |
| |
| /** Adds Accessibility information to individual child views of rows in the list. */ |
| final class TaskAdapter extends BaseAdapter{ |
| |
| private String[] mLabels = null; |
| private boolean[] mCheckboxes = null; |
| private Context mContext = null; |
| |
| public TaskAdapter(Context context, String[] labels, boolean[] checkboxes) { |
| super(); |
| mContext = context; |
| mLabels = labels; |
| mCheckboxes = checkboxes; |
| } |
| |
| @Override |
| public int getCount() { |
| return mLabels.length; |
| } |
| |
| /** Expands the views for individual list entries, and sets content descriptions for use by the |
| * TaskBackAccessibilityService. |
| */ |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| if(convertView == null) { |
| LayoutInflater inflater = LayoutInflater.from(mContext); |
| convertView = inflater.inflate(R.layout.tasklist_row, parent, false); |
| } |
| |
| CheckBox checkbox = (CheckBox) convertView.findViewById(R.id.tasklist_finished); |
| checkbox.setChecked(mCheckboxes[position]); |
| |
| TextView label = (TextView)(convertView.findViewById(R.id.tasklist_label)); |
| label.setText(mLabels[position]); |
| |
| String contentDescription = new StringBuilder() |
| .append(mContext.getString(R.string.task_name)) |
| .append(' ') |
| .append(mLabels[position]).toString(); |
| label.setContentDescription(contentDescription); |
| |
| convertView.setTag(position); |
| |
| return convertView; |
| } |
| |
| @Override |
| public Object getItem(int position) { |
| return mLabels[position]; |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return position; |
| } |
| } |