1 /* 2 * Copyright (C) 2014 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.example.android.support.wearable.notifications; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.view.LayoutInflater; 22 import android.view.View; 23 import android.view.ViewGroup; 24 import android.widget.ImageView; 25 import android.widget.TextView; 26 27 import java.util.ArrayList; 28 import java.util.List; 29 30 /** 31 * Manages the background image pickers. 32 */ 33 public class BackgroundPickers { 34 35 public interface OnBackgroundPickersChangedListener { onBackgroundPickersChanged(BackgroundPickers pickers)36 public void onBackgroundPickersChanged(BackgroundPickers pickers); 37 } 38 39 private final ViewGroup mContainer; 40 private final OnPickedListener mOnPickedListener; 41 private final List<ViewGroup> mPickers; 42 private final OnBackgroundPickersChangedListener listener; 43 BackgroundPickers(ViewGroup container, OnBackgroundPickersChangedListener listener)44 public BackgroundPickers(ViewGroup container, OnBackgroundPickersChangedListener listener) { 45 this.mContainer = container; 46 this.mOnPickedListener = new OnPickedListener(); 47 this.mPickers = new ArrayList<ViewGroup>(); 48 this.listener = listener; 49 } 50 51 /** 52 * Generates the pickers as necessary. 53 */ generatePickers(int count)54 public void generatePickers(int count) { 55 // Clear existing containers. 56 clear(); 57 58 // Fill in new pickers. 59 LayoutInflater inflater = LayoutInflater.from(mContainer.getContext()); 60 Resources res = mContainer.getResources(); 61 for (int i = 0; i < count; i++) { 62 View picker = inflater.inflate(R.layout.background_picker, mContainer, false); 63 TextView label = (TextView) picker.findViewById(R.id.bg_picker_label); 64 label.setText(String.format(res.getString(R.string.bg_picker_label), i+1)); 65 ViewGroup pickerBox = (ViewGroup) picker.findViewById(R.id.bg_picker_container); 66 mPickers.add(pickerBox); 67 for (int j = 0; j < pickerBox.getChildCount(); j++) { 68 ImageView img = (ImageView) pickerBox.getChildAt(j); 69 img.setOnClickListener(mOnPickedListener); 70 } 71 mContainer.addView(picker); 72 } 73 } 74 75 /** 76 * Returns the background resource for the picker at the given index. 77 * @param position Index of the background picker. 78 * @return Id of the background image resource. null if no image is picked. 79 */ getRes(int position)80 public Integer getRes(int position) { 81 String tag = (String) mPickers.get(position).getTag(); 82 if (tag == null) { 83 return null; 84 } 85 86 Context context = mContainer.getContext(); 87 return context.getResources().getIdentifier(tag, "drawable", context.getPackageName()); 88 } 89 90 /** 91 * Returns the all the background resources for the pickers managed by this object. Returns null 92 * if no pickers exist. 93 */ getRes()94 public Integer[] getRes() { 95 if (mPickers.size() == 0) { 96 return null; 97 } 98 99 Integer[] res = new Integer[mPickers.size()]; 100 for (int i = 0; i < mPickers.size(); i++) { 101 res[i] = getRes(i); 102 } 103 return res; 104 } 105 106 /** 107 * Clears the pickers. 108 */ clear()109 public void clear() { 110 mContainer.removeAllViews(); 111 mPickers.clear(); 112 } 113 getCount()114 public int getCount() { 115 return mPickers.size(); 116 } 117 118 private class OnPickedListener implements View.OnClickListener { 119 120 @Override onClick(View view)121 public void onClick(View view) { 122 ImageView pickedView = (ImageView) view; 123 ViewGroup pickerBox = (ViewGroup) view.getParent(); 124 125 // Clear old selection. 126 for (int i = 0; i < pickerBox.getChildCount(); i++) { 127 ImageView childView = (ImageView) pickerBox.getChildAt(i); 128 childView.setBackgroundResource(R.drawable.unselected_background); 129 } 130 131 // Set new selection. 132 pickedView.setBackgroundResource(R.drawable.selected_background); 133 pickerBox.setTag(pickedView.getTag()); 134 135 if (listener != null) { 136 listener.onBackgroundPickersChanged(BackgroundPickers.this); 137 } 138 } 139 } 140 } 141