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.quicksearchbox.ui;
18 
19 import com.android.quicksearchbox.Suggestion;
20 import com.android.quicksearchbox.SuggestionCursor;
21 
22 import android.content.Context;
23 import android.view.LayoutInflater;
24 import android.view.View;
25 import android.view.ViewGroup;
26 
27 import java.util.Collection;
28 import java.util.Collections;
29 
30 /**
31  * Suggestion view factory that inflates views from XML.
32  */
33 public class SuggestionViewInflater implements SuggestionViewFactory {
34 
35     private final String mViewType;
36     private final Class<?> mViewClass;
37     private final int mLayoutId;
38     private final Context mContext;
39 
40     /**
41      * @param viewType The unique type of views inflated by this factory
42      * @param viewClass The expected type of view classes.
43      * @param layoutId resource ID of layout to use.
44      * @param context Context to use for inflating the views.
45      */
SuggestionViewInflater(String viewType, Class<? extends SuggestionView> viewClass, int layoutId, Context context)46     public SuggestionViewInflater(String viewType, Class<? extends SuggestionView> viewClass,
47             int layoutId, Context context) {
48         mViewType = viewType;
49         mViewClass = viewClass;
50         mLayoutId = layoutId;
51         mContext = context;
52     }
53 
getInflater()54     protected LayoutInflater getInflater() {
55         return (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
56     }
57 
getSuggestionViewTypes()58     public Collection<String> getSuggestionViewTypes() {
59         return Collections.singletonList(mViewType);
60     }
61 
getView(SuggestionCursor suggestion, String userQuery, View convertView, ViewGroup parent)62     public View getView(SuggestionCursor suggestion, String userQuery,
63             View convertView, ViewGroup parent) {
64         if (convertView == null || !convertView.getClass().equals(mViewClass)) {
65             int layoutId = mLayoutId;
66             convertView = getInflater().inflate(layoutId, parent, false);
67         }
68         if (!(convertView instanceof SuggestionView)) {
69             throw new IllegalArgumentException("Not a SuggestionView: " + convertView);
70         }
71         ((SuggestionView) convertView).bindAsSuggestion(suggestion, userQuery);
72         return convertView;
73     }
74 
getViewType(Suggestion suggestion)75     public String getViewType(Suggestion suggestion) {
76         return mViewType;
77     }
78 
canCreateView(Suggestion suggestion)79     public boolean canCreateView(Suggestion suggestion) {
80         return true;
81     }
82 
83 }
84