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      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      */
     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 
     54     protected LayoutInflater getInflater() {
     55         return (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     56     }
     57 
     58     public Collection<String> getSuggestionViewTypes() {
     59         return Collections.singletonList(mViewType);
     60     }
     61 
     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 
     75     public String getViewType(Suggestion suggestion) {
     76         return mViewType;
     77     }
     78 
     79     public boolean canCreateView(Suggestion suggestion) {
     80         return true;
     81     }
     82 
     83 }
     84