DefaultSuggestionView.java revision 883c1bf364e38c5b133afb55f8493a14b65f4dd4 
1/*
2 * Copyright (C) 2009 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
17package com.android.quicksearchbox.ui;
18
19import com.android.quicksearchbox.R;
20import com.android.quicksearchbox.Source;
21import com.android.quicksearchbox.SuggestionCursor;
22
23import android.content.Context;
24import android.graphics.drawable.Drawable;
25import android.text.Html;
26import android.text.TextUtils;
27import android.util.AttributeSet;
28import android.util.Log;
29import android.view.View;
30import android.widget.ImageView;
31import android.widget.RelativeLayout;
32import android.widget.TextView;
33
34/**
35 * View for the items in the suggestions list. This includes promoted suggestions,
36 * sources, and suggestions under each source.
37 *
38 */
39public class DefaultSuggestionView extends RelativeLayout implements SuggestionView {
40
41    private static final boolean DBG = false;
42    private static final String TAG = "QSB.SuggestionView";
43
44    private TextView mText1;
45    private TextView mText2;
46    private ImageView mIcon1;
47    private ImageView mIcon2;
48
49    public DefaultSuggestionView(Context context, AttributeSet attrs, int defStyle) {
50        super(context, attrs, defStyle);
51    }
52
53    public DefaultSuggestionView(Context context, AttributeSet attrs) {
54        super(context, attrs);
55    }
56
57    public DefaultSuggestionView(Context context) {
58        super(context);
59    }
60
61    @Override
62    protected void onFinishInflate() {
63        super.onFinishInflate();
64        mText1 = (TextView) findViewById(R.id.text1);
65        mText2 = (TextView) findViewById(R.id.text2);
66        mIcon1 = (ImageView) findViewById(R.id.icon1);
67        mIcon2 = (ImageView) findViewById(R.id.icon2);
68    }
69
70    public void bindAsSuggestion(SuggestionCursor suggestion) {
71        String format = suggestion.getSuggestionFormat();
72        CharSequence text1 = formatText(suggestion.getSuggestionText1(), format);
73        CharSequence text2 = formatText(suggestion.getSuggestionText2(), format);
74        Drawable icon1 = getSuggestionDrawableIcon1(suggestion);
75        Drawable icon2 = getSuggestionDrawableIcon2(suggestion);
76        if (DBG) {
77            Log.d(TAG, "bindAsSuggestion(), text1=" + text1 + ",text2=" + text2
78                    + ",icon1=" + icon1 + ",icon2=" + icon2);
79        }
80        setText1(text1);
81        setText2(text2);
82        setIcon1(icon1);
83        setIcon2(icon2);
84    }
85
86    public Drawable getSuggestionDrawableIcon1(SuggestionCursor suggestion) {
87        Source source = suggestion.getSuggestionSource();
88        String icon1Id = suggestion.getSuggestionIcon1();
89        Drawable icon1 = source.getIcon(icon1Id);
90        return icon1 == null ? source.getSourceIcon() : icon1;
91    }
92
93    public Drawable getSuggestionDrawableIcon2(SuggestionCursor suggestion) {
94        Source source = suggestion.getSuggestionSource();
95        return source.getIcon(suggestion.getSuggestionIcon2());
96    }
97
98    private CharSequence formatText(String str, String format) {
99        boolean isHtml = "html".equals(format);
100        if (isHtml && looksLikeHtml(str)) {
101            return Html.fromHtml(str);
102        } else {
103            return str;
104        }
105    }
106
107    private boolean looksLikeHtml(String str) {
108        if (TextUtils.isEmpty(str)) return false;
109        for (int i = str.length() - 1; i >= 0; i--) {
110            char c = str.charAt(i);
111            if (c == '>' || c == '&') return true;
112        }
113        return false;
114    }
115
116    public void setText1(CharSequence text) {
117        mText1.setText(text);
118    }
119
120    public void setText2(CharSequence text) {
121        mText2.setText(text);
122        if (TextUtils.isEmpty(text)) {
123            mText2.setVisibility(GONE);
124        } else {
125            mText2.setVisibility(VISIBLE);
126        }
127    }
128
129    public void setIcon1(Drawable icon) {
130        setViewDrawable(mIcon1, icon);
131    }
132
133    public void setIcon2(Drawable icon) {
134        setViewDrawable(mIcon2, icon);
135    }
136
137    /**
138     * Sets the drawable in an image view, makes sure the view is only visible if there
139     * is a drawable.
140     */
141    private static void setViewDrawable(ImageView v, Drawable drawable) {
142        // Set the icon even if the drawable is null, since we need to clear any
143        // previous icon.
144        v.setImageDrawable(drawable);
145
146        if (drawable == null) {
147            v.setVisibility(View.GONE);
148        } else {
149            v.setVisibility(View.VISIBLE);
150
151            // This is a hack to get any animated drawables (like a 'working' spinner)
152            // to animate. You have to setVisible true on an AnimationDrawable to get
153            // it to start animating, but it must first have been false or else the
154            // call to setVisible will be ineffective. We need to clear up the story
155            // about animated drawables in the future, see http://b/1878430.
156            drawable.setVisible(false, false);
157            drawable.setVisible(true, false);
158        }
159    }
160
161}
162