Svetoslav Ganov | 4b9a4d1 | 2013-06-11 15:20:06 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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.print; |
| 18 | |
| 19 | import android.os.Parcel; |
| 20 | import android.os.Parcelable; |
| 21 | |
| 22 | /** |
| 23 | * Represents a range of pages. The start and end page indices of |
Svetoslav | fd90651 | 2013-06-24 09:04:48 -0700 | [diff] [blame] | 24 | * the range are zero based and inclusive. |
Svetoslav Ganov | 4b9a4d1 | 2013-06-11 15:20:06 -0700 | [diff] [blame] | 25 | */ |
| 26 | public final class PageRange implements Parcelable { |
| 27 | |
| 28 | /** |
| 29 | * Constant for specifying all pages. |
| 30 | */ |
| 31 | public static final PageRange ALL_PAGES = new PageRange(0, Integer.MAX_VALUE); |
| 32 | |
| 33 | private final int mStart; |
| 34 | private final int mEnd; |
| 35 | |
| 36 | /** |
| 37 | * Creates a new instance. |
| 38 | * |
| 39 | * @param start The start page index (zero based and inclusive). |
| 40 | * @param end The end page index (zero based and inclusive). |
| 41 | * |
| 42 | * @throws IllegalArgumentException If start is less than zero. |
| 43 | * @throws IllegalArgumentException If end is less than zero. |
| 44 | * @throws IllegalArgumentException If start greater than end. |
| 45 | */ |
| 46 | PageRange(int start, int end) { |
| 47 | if (start < 0) { |
| 48 | throw new IllegalArgumentException("start cannot be less than zero."); |
| 49 | } |
| 50 | if (end < 0) { |
| 51 | throw new IllegalArgumentException("end cannot be less than zero."); |
| 52 | } |
| 53 | if (start > end) { |
| 54 | throw new IllegalArgumentException("start must be lesser than end."); |
| 55 | } |
| 56 | mStart = start; |
| 57 | mEnd = end; |
| 58 | } |
| 59 | |
| 60 | private PageRange (Parcel parcel) { |
| 61 | this(parcel.readInt(), parcel.readInt()); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Gets the start page index (zero based and inclusive). |
| 66 | * |
| 67 | * @return The start page index. |
| 68 | */ |
| 69 | public int getStart() { |
| 70 | return mStart; |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Gets the end page index (zero based and inclusive). |
| 75 | * |
| 76 | * @return The end page index. |
| 77 | */ |
| 78 | public int getEnd() { |
| 79 | return mEnd; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public int describeContents() { |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | public void writeToParcel(Parcel parcel, int flags) { |
| 89 | parcel.writeInt(mStart); |
| 90 | parcel.writeInt(mEnd); |
| 91 | } |
| 92 | |
| 93 | @Override |
| 94 | public String toString() { |
| 95 | if (this == ALL_PAGES) { |
| 96 | return "PageRange[<all pages>]"; |
| 97 | } |
| 98 | StringBuilder builder = new StringBuilder(); |
| 99 | builder.append("PageRange[") |
| 100 | .append(mStart) |
| 101 | .append(" - ") |
| 102 | .append(mEnd) |
| 103 | .append("]"); |
| 104 | return builder.toString(); |
| 105 | } |
| 106 | |
| 107 | public static final Parcelable.Creator<PageRange> CREATOR = |
| 108 | new Creator<PageRange>() { |
| 109 | @Override |
| 110 | public PageRange createFromParcel(Parcel parcel) { |
| 111 | return new PageRange(parcel); |
| 112 | } |
| 113 | |
| 114 | @Override |
| 115 | public PageRange[] newArray(int size) { |
| 116 | return new PageRange[size]; |
| 117 | } |
| 118 | }; |
| 119 | } |