| Clover coverage report - DrJava Test Coverage (drjava-20110828-r5448) |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| ClipboardHistoryModel.java | 100% | 100% | 100% | 100% |
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| 1 | /*BEGIN_COPYRIGHT_BLOCK | |
| 2 | * | |
| 3 | * Copyright (c) 2001-2010, JavaPLT group at Rice University (drjava@rice.edu) | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * Redistribution and use in source and binary forms, with or without | |
| 7 | * modification, are permitted provided that the following conditions are met: | |
| 8 | * * Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * * Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the | |
| 14 | * names of its contributors may be used to endorse or promote products | |
| 15 | * derived from this software without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 21 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 22 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 24 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 25 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 | * | |
| 29 | * This software is Open Source Initiative approved Open Source Software. | |
| 30 | * Open Source Initative Approved is a trademark of the Open Source Initiative. | |
| 31 | * | |
| 32 | * This file is part of DrJava. Download the current version of this project | |
| 33 | * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/ | |
| 34 | * | |
| 35 | * END_COPYRIGHT_BLOCK*/ | |
| 36 | ||
| 37 | package edu.rice.cs.drjava.model; | |
| 38 | ||
| 39 | import java.util.List; | |
| 40 | import java.util.LinkedList; | |
| 41 | ||
| 42 | /** Model class for clipboard history. */ | |
| 43 | public class ClipboardHistoryModel { | |
| 44 | /** Maximum size of the history. */ | |
| 45 | private int _maxSize; | |
| 46 | ||
| 47 | /** The history of strings. The most recent string will be the last. */ | |
| 48 | private LinkedList<String> _history = new LinkedList<String>(); | |
| 49 | ||
| 50 | /** Singleton instance. */ | |
| 51 | private static ClipboardHistoryModel ONLY = null; | |
| 52 | ||
| 53 | /** Singleton accessor. */ | |
| 54 | 160 | public static synchronized ClipboardHistoryModel singleton() { |
| 55 | 24 | if (ONLY == null) ONLY = new ClipboardHistoryModel(10); |
| 56 | 160 | return ONLY; |
| 57 | } | |
| 58 | ||
| 59 | /** Create a new clipboard history model. | |
| 60 | * @param maxSize maximum size of history */ | |
| 61 | 24 | private ClipboardHistoryModel(int maxSize) { |
| 62 | 24 | _maxSize = maxSize; |
| 63 | } | |
| 64 | ||
| 65 | /** Sets the maximum size. May kick old strings out. */ | |
| 66 | 160 | public void resize(int maxSize) { |
| 67 | 160 | _maxSize = maxSize; |
| 68 | 5 | while (_history.size()>_maxSize) { _history.removeFirst(); } |
| 69 | } | |
| 70 | ||
| 71 | /** Add a string to the history. If it is already in the history, it will get | |
| 72 | * moved to the end, making it the most recent string. */ | |
| 73 | 11 | public synchronized void put(String s) { |
| 74 | 11 | _history.remove(s); |
| 75 | 11 | _history.add(s); |
| 76 | 1 | while (_history.size()>_maxSize) { _history.removeFirst(); } |
| 77 | } | |
| 78 | ||
| 79 | /** Return a copy of the history of strings. */ | |
| 80 | 2 | public synchronized List<String> getStrings() { |
| 81 | 2 | return new LinkedList<String>(_history); |
| 82 | } | |
| 83 | ||
| 84 | /** Return the most recent string, or null if nothing is in the history. */ | |
| 85 | 2 | public synchronized String getMostRecent() { |
| 86 | 1 | if (_history.size() == 0) { return null; } |
| 87 | 1 | else { return _history.getLast(); } |
| 88 | } | |
| 89 | } |
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