1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.camera.ui; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.accessibility.AccessibilityEvent; 22 import android.widget.LinearLayout; 23 import android.widget.TextView; 24 25 import com.android.camera.ListPreference; 26 import com.android.camera.R; 27 28 /** 29 * A one-line camera setting could be one of three types: knob, switch or restore 30 * preference button. The setting includes a title for showing the preference 31 * title which is initialized in the SimpleAdapter. A knob also includes 32 * (ex: Picture size), a previous button, the current value (ex: 5MP), 33 * and a next button. A switch, i.e. the preference RecordLocationPreference, 34 * has only two values on and off which will be controlled in a switch button. 35 * Other setting popup window includes several InLineSettingItem items with 36 * different types if possible. 37 */ 38 public abstract class InLineSettingItem extends LinearLayout { 39 private Listener mListener; 40 protected ListPreference mPreference; 41 protected int mIndex; 42 // Scene mode can override the original preference value. 43 protected String mOverrideValue; 44 protected TextView mTitle; 45 46 static public interface Listener { onSettingChanged(ListPreference pref)47 public void onSettingChanged(ListPreference pref); 48 } 49 InLineSettingItem(Context context, AttributeSet attrs)50 public InLineSettingItem(Context context, AttributeSet attrs) { 51 super(context, attrs); 52 } 53 setTitle(ListPreference preference)54 protected void setTitle(ListPreference preference) { 55 mTitle = ((TextView) findViewById(R.id.title)); 56 mTitle.setText(preference.getTitle()); 57 } 58 initialize(ListPreference preference)59 public void initialize(ListPreference preference) { 60 setTitle(preference); 61 if (preference == null) return; 62 mPreference = preference; 63 reloadPreference(); 64 } 65 updateView()66 protected abstract void updateView(); 67 changeIndex(int index)68 protected boolean changeIndex(int index) { 69 if (index >= mPreference.getEntryValues().length || index < 0) return false; 70 mIndex = index; 71 mPreference.setValueIndex(mIndex); 72 if (mListener != null) { 73 mListener.onSettingChanged(mPreference); 74 } 75 updateView(); 76 sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED); 77 return true; 78 } 79 80 // The value of the preference may have changed. Update the UI. reloadPreference()81 public void reloadPreference() { 82 mIndex = mPreference.findIndexOfValue(mPreference.getValue()); 83 updateView(); 84 } 85 setSettingChangedListener(Listener listener)86 public void setSettingChangedListener(Listener listener) { 87 mListener = listener; 88 } 89 overrideSettings(String value)90 public void overrideSettings(String value) { 91 mOverrideValue = value; 92 updateView(); 93 } 94 } 95