Source Code Cross Referenced for IModelChangedEvent.java in  » IDE-Eclipse » Eclipse-plug-in-development » org » eclipse » pde » core » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » Eclipse plug in development » org.eclipse.pde.core 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*******************************************************************************
02:         * Copyright (c) 2000, 2006 IBM Corporation and others.
03:         * All rights reserved. This program and the accompanying materials
04:         * are made available under the terms of the Eclipse Public License v1.0
05:         * which accompanies this distribution, and is available at
06:         * http://www.eclipse.org/legal/epl-v10.html
07:         *
08:         * Contributors:
09:         *     IBM Corporation - initial API and implementation
10:         *******************************************************************************/package org.eclipse.pde.core;
11:
12:        /**
13:         * Model change events are fired by the model when it is changed from the last
14:         * clean state. Model change listeners can use these events to update
15:         * accordingly.
16:         * 
17:         * @since 2.0
18:         */
19:        public interface IModelChangedEvent {
20:            /**
21:             * Indicates a change where one or more objects are added to the model.
22:             */
23:            int INSERT = 1;
24:            /**
25:             * Indicates a change where one or more objects are removed from the model.
26:             */
27:            int REMOVE = 2;
28:            /**
29:             * Indicates that the model has been reloaded and that listeners should
30:             * perform full refresh.
31:             */
32:            int WORLD_CHANGED = 99;
33:            /**
34:             * indicates that a model object's property has been changed.
35:             */
36:            int CHANGE = 3;
37:
38:            /**
39:             * Returns the provider that fired this event.
40:             * 
41:             * @return the event provider
42:             */
43:            public IModelChangeProvider getChangeProvider();
44:
45:            /**
46:             * Returns an array of model objects that are affected by the change.
47:             * 
48:             * @return array of affected objects
49:             */
50:            public Object[] getChangedObjects();
51:
52:            /**
53:             * Returns a name of the object's property that has been changed if change
54:             * type is CHANGE.
55:             * 
56:             * @return property that has been changed in the model object, or <samp>null
57:             *         </samp> if type is not CHANGE or if more than one property has
58:             *         been changed.
59:             */
60:            public String getChangedProperty();
61:
62:            /**
63:             * When model change is of type <samp>CHANGE</samp>, this method is used to
64:             * obtain the old value of the property (before the change).
65:             * 
66:             * @return the old value of the changed property
67:             */
68:            public Object getOldValue();
69:
70:            /**
71:             * When model change is of type <samp>CHANGE</samp>, this method is used to
72:             * obtain the new value of the property (after the change).
73:             * 
74:             * @return the new value of the changed property.
75:             */
76:            public Object getNewValue();
77:
78:            /**
79:             * Returns the type of change that occured in the model (one of <samp>INSERT</samp>,
80:             * <samp>REMOVE</samp>, <samp>CHANGE</samp> or
81:             * <samp>WORLD_CHANGED </samp>).
82:             * 
83:             * @return type of change
84:             */
85:            public int getChangeType();
86:        }
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