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.layoutlib.bridge.impl.binding; 18 19 import com.android.ide.common.rendering.api.AdapterBinding; 20 import com.android.ide.common.rendering.api.DataBindingItem; 21 import com.android.ide.common.rendering.api.IProjectCallback; 22 import com.android.ide.common.rendering.api.ResourceReference; 23 24 import android.view.View; 25 import android.view.ViewGroup; 26 import android.widget.AdapterView; 27 import android.widget.ListAdapter; 28 import android.widget.SpinnerAdapter; 29 30 import java.util.ArrayList; 31 import java.util.List; 32 33 /** 34 * Fake adapter to do fake data binding in {@link AdapterView} objects for {@link ListAdapter} 35 * and {@link SpinnerAdapter}. 36 * 37 */ 38 public class FakeAdapter extends BaseAdapter implements ListAdapter, SpinnerAdapter { 39 40 // don't use a set because the order is important. 41 private final List<ResourceReference> mTypes = new ArrayList<ResourceReference>(); 42 43 public FakeAdapter(ResourceReference adapterRef, AdapterBinding binding, 44 IProjectCallback callback) { 45 super(adapterRef, binding, callback); 46 47 final int repeatCount = getBinding().getRepeatCount(); 48 final int itemCount = getBinding().getItemCount(); 49 50 // Need an array to count for each type. 51 // This is likely too big, but is the max it can be. 52 int[] typeCount = new int[itemCount]; 53 54 // We put several repeating sets. 55 for (int r = 0 ; r < repeatCount ; r++) { 56 // loop on the type of list items, and add however many for each type. 57 for (DataBindingItem dataBindingItem : getBinding()) { 58 ResourceReference viewRef = dataBindingItem.getViewReference(); 59 int typeIndex = mTypes.indexOf(viewRef); 60 if (typeIndex == -1) { 61 typeIndex = mTypes.size(); 62 mTypes.add(viewRef); 63 } 64 65 int count = dataBindingItem.getCount(); 66 67 int index = typeCount[typeIndex]; 68 typeCount[typeIndex] += count; 69 70 for (int k = 0 ; k < count ; k++) { 71 mItems.add(new AdapterItem(dataBindingItem, typeIndex, mItems.size(), index++)); 72 } 73 } 74 } 75 } 76 77 public boolean isEnabled(int position) { 78 return true; 79 } 80 81 public int getCount() { 82 return mItems.size(); 83 } 84 85 public Object getItem(int position) { 86 return mItems.get(position); 87 } 88 89 public long getItemId(int position) { 90 return position; 91 } 92 93 public int getItemViewType(int position) { 94 return mItems.get(position).getType(); 95 } 96 97 public View getView(int position, View convertView, ViewGroup parent) { 98 // we don't care about recycling here because we never scroll. 99 AdapterItem item = mItems.get(position); 100 return getView(item, null /*parentGroup*/, convertView, parent); 101 } 102 103 public int getViewTypeCount() { 104 return mTypes.size(); 105 } 106 107 // ---- SpinnerAdapter 108 109 public View getDropDownView(int position, View convertView, ViewGroup parent) { 110 // pass 111 return null; 112 } 113 } 114
