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1 /* |
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2 * CDDL HEADER START |
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3 * |
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4 * The contents of this file are subject to the terms of the |
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5 * Common Development and Distribution License (the "License"). |
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6 * You may not use this file except in compliance with the License. |
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7 * |
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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9 * or http://www.opensolaris.org/os/licensing. |
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10 * See the License for the specific language governing permissions |
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11 * and limitations under the License. |
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12 * |
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13 * When distributing Covered Code, include this CDDL HEADER in each |
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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15 * If applicable, add the following below this CDDL HEADER, with the |
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16 * fields enclosed by brackets "[]" replaced with your own identifying |
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17 * information: Portions Copyright [yyyy] [name of copyright owner] |
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18 * |
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19 * CDDL HEADER END |
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20 */ |
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21 |
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22 /* |
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23 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved. |
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24 */ |
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25 |
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26 package com.oracle.solaris.vp.panel.common.control; |
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27 |
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28 /** |
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29 * The {@code UITransitionManager} class manages all {@link NavigationListener}s |
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30 * that handle the UI transitions that occur as a result of navigation. |
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31 * Presumably only one such {@link NavigationListener} should handle any given |
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32 * transition -- this class allows the instigators of the navigation to specify |
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33 * which. |
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34 */ |
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35 public class UITransitionManager implements NavigationListener { |
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36 // |
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37 // Instance data |
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38 // |
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39 |
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40 private NavigationListener handler; |
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41 |
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42 // |
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43 // Constructors |
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44 // |
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45 |
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46 public UITransitionManager() { |
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47 } |
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48 |
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49 public UITransitionManager(NavigationListener handler) { |
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50 setHandler(handler); |
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51 } |
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52 |
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53 // |
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54 // NavigationListener methods |
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55 // |
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56 |
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57 /** |
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58 * Delegates the event to the handler, if non-{@code null}. |
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59 */ |
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60 @Override |
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61 public void navigationStarted(NavigationStartEvent event) { |
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62 if (handler != null) { |
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63 handler.navigationStarted(event); |
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64 } |
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65 } |
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66 |
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67 /** |
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68 * Delegates the event to the handler, if non-{@code null}. |
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69 */ |
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70 @Override |
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71 public void navigationStopped(NavigationStopEvent event) { |
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72 if (handler != null) { |
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73 handler.navigationStopped(event); |
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74 } |
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75 } |
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76 |
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77 // |
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78 // UITransitionManager methods |
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79 // |
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80 |
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81 public NavigationListener getHandler() { |
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82 return handler; |
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83 } |
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84 |
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85 public void setHandler(NavigationListener handler) { |
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86 this.handler = handler; |
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87 } |
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88 } |