1 /* 2 * Copyright (C) 2010 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.photoeditor; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.content.res.TypedArray; 22 import android.graphics.drawable.Drawable; 23 import android.util.AttributeSet; 24 import android.widget.ImageView; 25 26 /** 27 * Represents image icons/buttons having various modes. 28 */ 29 public class IconIndicator extends ImageView { 30 31 private Drawable[] mIcons; 32 private CharSequence[] mModes; 33 IconIndicator(Context context, AttributeSet attrs, int defStyle)34 public IconIndicator(Context context, AttributeSet attrs, int defStyle) { 35 super(context, attrs, defStyle); 36 TypedArray a = context 37 .obtainStyledAttributes(attrs, R.styleable.IconIndicator, defStyle, 0); 38 Drawable icons[] = loadIcons(context.getResources(), a.getResourceId( 39 R.styleable.IconIndicator_icons, 0)); 40 CharSequence modes[] = a.getTextArray(R.styleable.IconIndicator_modes); 41 a.recycle(); 42 43 setModesAndIcons(modes, icons); 44 setImageDrawable(mIcons.length > 0 ? mIcons[0] : null); 45 } 46 IconIndicator(Context context, AttributeSet attrs)47 public IconIndicator(Context context, AttributeSet attrs) { 48 this(context, attrs, 0); 49 } 50 loadIcons(Resources resources, int iconsId)51 private Drawable[] loadIcons(Resources resources, int iconsId) { 52 TypedArray array = resources.obtainTypedArray(iconsId); 53 int n = array.length(); 54 Drawable drawable[] = new Drawable[n]; 55 for (int i = 0; i < n; ++i) { 56 int id = array.getResourceId(i, 0); 57 drawable[i] = id == 0 ? null : resources.getDrawable(id); 58 } 59 array.recycle(); 60 return drawable; 61 } 62 setModesAndIcons(CharSequence[] modes, Drawable icons[])63 private void setModesAndIcons(CharSequence[] modes, Drawable icons[]) { 64 if (modes.length != icons.length || icons.length == 0) { 65 throw new IllegalArgumentException(); 66 } 67 mIcons = icons; 68 mModes = modes; 69 } 70 setMode(String mode)71 public void setMode(String mode) { 72 for (int i = 0, n = mModes.length; i < n; ++i) { 73 if (mModes[i].equals(mode)) { 74 setImageDrawable(mIcons[i]); 75 return; 76 } 77 } 78 throw new IllegalArgumentException("unknown mode: " + mode); 79 } 80 } 81