1 /*
2  * Copyright (C) 2007 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 android.widget.focus;
18 
19 import android.app.Activity;
20 import android.os.Bundle;
21 import android.widget.LinearLayout;
22 import android.widget.Button;
23 import android.widget.TextView;
24 import android.view.Gravity;
25 import android.view.ViewGroup;
26 import android.content.Context;
27 
28 /**
29  * Holds a few buttons of various sizes and horizontal placements in a
30  * vertical layout to excercise some core focus searching.
31  */
32 public class VerticalFocusSearch extends Activity {
33 
34     private LinearLayout mLayout;
35 
36     private Button mTopWide;
37     private Button mMidSkinny1Left;
38     private Button mBottomWide;
39 
40     private Button mMidSkinny2Right;
41 
42 
getLayout()43     public LinearLayout getLayout() {
44         return mLayout;
45     }
46 
getTopWide()47     public Button getTopWide() {
48         return mTopWide;
49     }
50 
getMidSkinny1Left()51     public Button getMidSkinny1Left() {
52         return mMidSkinny1Left;
53     }
54 
getMidSkinny2Right()55     public Button getMidSkinny2Right() {
56         return mMidSkinny2Right;
57     }
58 
getBottomWide()59     public Button getBottomWide() {
60         return mBottomWide;
61     }
62 
63     @Override
onCreate(Bundle icicle)64     protected void onCreate(Bundle icicle) {
65         super.onCreate(icicle);
66 
67         mLayout = new LinearLayout(this);
68         mLayout.setOrientation(LinearLayout.VERTICAL);
69         mLayout.setHorizontalGravity(Gravity.START);
70         mLayout.setLayoutParams(new ViewGroup.LayoutParams(
71                 ViewGroup.LayoutParams.MATCH_PARENT,
72                 ViewGroup.LayoutParams.MATCH_PARENT));
73 
74         mTopWide = makeWide("top wide");
75         mLayout.addView(mTopWide);
76 
77         mMidSkinny1Left = addSkinny(mLayout, "mid skinny 1(L)", false);
78 
79         mMidSkinny2Right = addSkinny(mLayout, "mid skinny 2(R)", true);
80 
81         mBottomWide = makeWide("bottom wide");
82         mLayout.addView(mBottomWide);
83 
84         setContentView(mLayout);
85     }
86 
87     // just to get toString non-sucky
88     private static class MyButton extends Button {
89 
MyButton(Context context)90         public MyButton(Context context) {
91             super(context);
92         }
93 
94 
95         @Override
toString()96         public String toString() {
97             return getText().toString();
98         }
99     }
100 
makeWide(String label)101     private Button makeWide(String label) {
102         Button button = new MyButton(this);
103         button.setText(label);
104         button.setLayoutParams(new LinearLayout.LayoutParams(
105                 ViewGroup.LayoutParams.MATCH_PARENT,
106                 ViewGroup.LayoutParams.WRAP_CONTENT));
107         return button;
108     }
109 
110     /**
111      * Add a skinny button that takes up just less than half of the screen
112      * horizontally.
113      * @param root The layout to add the button to.
114      * @param label The label of the button.
115      * @param atRight Which side to put the button on.
116      * @return The newly created button.
117      */
addSkinny(LinearLayout root, String label, boolean atRight)118     private Button addSkinny(LinearLayout root, String label, boolean atRight) {
119         Button button = new MyButton(this);
120         button.setText(label);
121         button.setLayoutParams(new LinearLayout.LayoutParams(
122                 0, // width
123                 ViewGroup.LayoutParams.WRAP_CONTENT,
124                 480));
125 
126         TextView filler = new TextView(this);
127         filler.setText("filler");
128         filler.setLayoutParams(new LinearLayout.LayoutParams(
129                 0, // width
130                 ViewGroup.LayoutParams.WRAP_CONTENT,
131                 520));
132 
133         LinearLayout ll = new LinearLayout(this);
134         ll.setOrientation(LinearLayout.HORIZONTAL);
135         ll.setLayoutParams(new LinearLayout.LayoutParams(
136             ViewGroup.LayoutParams.MATCH_PARENT,
137             ViewGroup.LayoutParams.WRAP_CONTENT));
138 
139         if (atRight) {
140             ll.addView(filler);
141             ll.addView(button);
142             root.addView(ll);
143         } else {
144             ll.addView(button);
145             ll.addView(filler);
146             root.addView(ll);
147         }
148         return button;
149     }
150 
151 }
152