| /* |
| * 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 com.android.emergency.preferences; |
| |
| import android.content.Context; |
| import android.text.Spannable; |
| import android.text.SpannableString; |
| import android.text.TextUtils; |
| import android.text.style.TtsSpan; |
| import android.util.AttributeSet; |
| |
| import com.android.emergency.R; |
| |
| /** |
| * Custom {@link EmergencyListPreference} that provides accessible strings for the '+' and '-' |
| * symbols used in blood types. |
| */ |
| public class BloodTypeListPreference extends EmergencyListPreference { |
| private String[] mContentDescriptions; |
| |
| public BloodTypeListPreference(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mContentDescriptions = |
| getContext().getResources().getStringArray(R.array.blood_type_content_description); |
| // Override entries with accessible entries. |
| setEntries(createAccessibleEntries(getEntries(), mContentDescriptions)); |
| } |
| |
| @Override |
| public CharSequence getSummary() { |
| final String value = getValue(); |
| int index = findIndexOfValue(value); |
| if (index < 0) { |
| return super.getSummary(); |
| } else { |
| return createAccessibleSequence(getEntries()[index], mContentDescriptions[index]); |
| } |
| } |
| |
| private static CharSequence[] createAccessibleEntries(CharSequence entries[], |
| String[] contentDescriptions) { |
| CharSequence[] accessibleEntries = new CharSequence[entries.length]; |
| for (int i = 0; i < entries.length; i++) { |
| accessibleEntries[i] = createAccessibleSequence(entries[i], contentDescriptions[i]); |
| } |
| return accessibleEntries; |
| } |
| |
| private static SpannableString createAccessibleSequence(CharSequence displayText, |
| String accessibleText) { |
| SpannableString str = new SpannableString(displayText); |
| str.setSpan(new TtsSpan.TextBuilder(accessibleText).build(), 0, |
| displayText.length(), |
| Spannable.SPAN_INCLUSIVE_INCLUSIVE); |
| return str; |
| } |
| } |