Home | History | Annotate | Download | only in focus 
      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 
     43     public LinearLayout getLayout() {
     44         return mLayout;
     45     }
     46 
     47     public Button getTopWide() {
     48         return mTopWide;
     49     }
     50 
     51     public Button getMidSkinny1Left() {
     52         return mMidSkinny1Left;
     53     }
     54 
     55     public Button getMidSkinny2Right() {
     56         return mMidSkinny2Right;
     57     }
     58 
     59     public Button getBottomWide() {
     60         return mBottomWide;
     61     }
     62 
     63     @Override
     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 
     90         public MyButton(Context context) {
     91             super(context);
     92         }
     93 
     94 
     95         @Override
     96         public String toString() {
     97             return getText().toString();
     98         }
     99     }
    100 
    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      */
    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