1 /* 2 * Copyright (C) 2008 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.browser; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.Gravity; 22 import android.widget.ImageView; 23 import android.widget.LinearLayout; 24 25 import java.util.Map; 26 27 /** 28 * Displays a series of dots. The selected one is highlighted. 29 * No animations yet. Nothing fancy. 30 */ 31 class Dots extends LinearLayout { 32 33 private static final int MAX_DOTS = 8; 34 private int mSelected = -1; 35 36 public Dots(Context context) { 37 this(context, null); 38 } 39 40 public Dots(Context context, AttributeSet attrs) { 41 super(context, attrs); 42 43 setGravity(Gravity.CENTER); 44 setPadding(0, 4, 0, 4); 45 46 LayoutParams lp = 47 new LayoutParams(LayoutParams.WRAP_CONTENT, 48 LayoutParams.WRAP_CONTENT); 49 50 for (int i = 0; i < MAX_DOTS; i++) { 51 ImageView dotView = new ImageView(mContext); 52 dotView.setImageResource(R.drawable.page_indicator_unselected2); 53 addView(dotView, lp); 54 } 55 } 56 57 /** 58 * @param dotCount if less than 1 or greater than MAX_DOTS, Dots 59 * disappears 60 */ 61 public void setDotCount(int dotCount) { 62 if (dotCount > 1 && dotCount <= MAX_DOTS) { 63 setVisibility(VISIBLE); 64 for (int i = 0; i < MAX_DOTS; i++) { 65 getChildAt(i).setVisibility(i < dotCount? VISIBLE : GONE); 66 } 67 } else { 68 setVisibility(GONE); 69 } 70 } 71 72 public void setSelected(int index) { 73 if (index < 0 || index >= MAX_DOTS) return; 74 75 if (mSelected >= 0) { 76 // Unselect old 77 ((ImageView)getChildAt(mSelected)).setImageResource( 78 R.drawable.page_indicator_unselected2); 79 } 80 ((ImageView)getChildAt(index)).setImageResource(R.drawable.page_indicator); 81 mSelected = index; 82 } 83 } 84