Mercurial > projects > dwt-addons
annotate dwtx/jface/internal/text/revisions/RevisionSelectionProvider.d @ 138:b6bad70d540a
Regex instanceof changes
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 24 Aug 2008 02:26:23 +0200 |
| parents | 51e6e63f930e |
| children | 75302ef3f92f |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2006 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwtx.jface.internal.text.revisions.RevisionSelectionProvider; | |
| 14 | |
| 131 | 15 import dwtx.jface.internal.text.revisions.HunkComputer; // packageimport |
| 16 import dwtx.jface.internal.text.revisions.LineIndexOutOfBoundsException; // packageimport | |
| 17 import dwtx.jface.internal.text.revisions.Hunk; // packageimport | |
| 18 import dwtx.jface.internal.text.revisions.Colors; // packageimport | |
| 19 import dwtx.jface.internal.text.revisions.ChangeRegion; // packageimport | |
| 20 import dwtx.jface.internal.text.revisions.Range; // packageimport | |
| 21 import dwtx.jface.internal.text.revisions.RevisionPainter; // packageimport | |
| 22 | |
| 23 | |
| 129 | 24 import dwt.dwthelper.utils; |
| 25 | |
| 26 | |
| 27 | |
| 28 import dwtx.core.runtime.ListenerList; | |
| 29 import dwtx.jface.text.ITextSelection; | |
| 30 import dwtx.jface.text.ITextViewer; | |
| 31 import dwtx.jface.text.revisions.Revision; | |
| 32 import dwtx.jface.viewers.IPostSelectionProvider; | |
| 33 import dwtx.jface.viewers.ISelection; | |
| 34 import dwtx.jface.viewers.ISelectionChangedListener; | |
| 35 import dwtx.jface.viewers.ISelectionProvider; | |
| 36 import dwtx.jface.viewers.IStructuredSelection; | |
| 37 import dwtx.jface.viewers.SelectionChangedEvent; | |
| 38 import dwtx.jface.viewers.StructuredSelection; | |
| 39 | |
| 40 /** | |
| 41 * A selection provider for annotate revisions. Selections of a revision can currently happen in | |
| 42 * following ways - note that this list may be changed in the future: | |
| 43 * <ul> | |
| 44 * <li>when the user clicks the revision ruler with the mouse</li> | |
| 45 * <li>when the caret is moved to a revision's line (only on post-selection)</li> | |
| 46 * </ul> | |
| 47 * <p> | |
| 48 * Calling {@link #setSelection(ISelection)} will set the current sticky revision on the ruler. | |
| 49 * </p> | |
| 50 * | |
| 51 * @since 3.2 | |
| 52 */ | |
| 53 public final class RevisionSelectionProvider : ISelectionProvider { | |
| 54 | |
| 55 /** | |
| 56 * Post selection listener on the viewer that remembers the selection provider it is registered | |
| 57 * with. | |
| 58 */ | |
| 59 private final class PostSelectionListener : ISelectionChangedListener { | |
| 60 private final IPostSelectionProvider fPostProvider; | |
| 61 | |
|
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62 public this(IPostSelectionProvider postProvider) { |
| 129 | 63 postProvider.addPostSelectionChangedListener(this); |
| 64 fPostProvider= postProvider; | |
| 65 } | |
| 66 | |
| 67 public void selectionChanged(SelectionChangedEvent event) { | |
| 68 ISelection selection= event.getSelection(); | |
| 138 | 69 if ( cast(ITextSelection)selection ) { |
| 134 | 70 ITextSelection ts= cast(ITextSelection) selection; |
| 129 | 71 int offset= ts.getOffset(); |
| 72 setSelectedRevision(fPainter.getRevision(offset)); | |
| 73 } | |
| 74 | |
| 75 } | |
| 76 | |
| 77 public void dispose() { | |
| 78 fPostProvider.removePostSelectionChangedListener(this); | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 private final RevisionPainter fPainter; | |
| 83 private final ListenerList fListeners= new ListenerList(); | |
| 84 | |
| 85 /** | |
| 86 * The text viewer once we are installed, <code>null</code> if not installed. | |
| 87 */ | |
| 88 private ITextViewer fViewer; | |
| 89 /** | |
| 90 * The selection listener on the viewer, or <code>null</code>. | |
| 91 */ | |
| 92 private PostSelectionListener fSelectionListener; | |
| 93 /** | |
| 94 * The last selection, or <code>null</code>. | |
| 95 */ | |
| 96 private Revision fSelection; | |
| 97 /** | |
| 98 * Incoming selection changes are ignored while sending out events. | |
| 99 * | |
| 100 * @since 3.3 | |
| 101 */ | |
| 102 private bool fIgnoreEvents= false; | |
| 103 | |
| 104 /** | |
| 105 * Creates a new selection provider. | |
| 106 * | |
| 107 * @param painter the painter that the created provider interacts with | |
| 108 */ | |
|
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parents:
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diff
changeset
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109 this(RevisionPainter painter) { |
| 129 | 110 fPainter= painter; |
| 111 } | |
| 112 | |
| 113 /* | |
| 114 * @see dwtx.jface.viewers.ISelectionProvider#addSelectionChangedListener(dwtx.jface.viewers.ISelectionChangedListener) | |
| 115 */ | |
| 116 public void addSelectionChangedListener(ISelectionChangedListener listener) { | |
| 117 fListeners.add(listener); | |
| 118 } | |
| 119 | |
| 120 /* | |
| 121 * @see dwtx.jface.viewers.ISelectionProvider#removeSelectionChangedListener(dwtx.jface.viewers.ISelectionChangedListener) | |
| 122 */ | |
| 123 public void removeSelectionChangedListener(ISelectionChangedListener listener) { | |
| 124 fListeners.remove(listener); | |
| 125 } | |
| 126 | |
| 127 /* | |
| 128 * @see dwtx.jface.viewers.ISelectionProvider#getSelection() | |
| 129 */ | |
| 130 public ISelection getSelection() { | |
| 131 if (fSelection is null) | |
| 132 return StructuredSelection.EMPTY; | |
| 133 return new StructuredSelection(fSelection); | |
| 134 } | |
| 135 | |
| 136 /* | |
| 137 * @see dwtx.jface.viewers.ISelectionProvider#setSelection(dwtx.jface.viewers.ISelection) | |
| 138 */ | |
| 139 public void setSelection(ISelection selection) { | |
| 140 if (fIgnoreEvents) | |
| 141 return; | |
| 138 | 142 if ( cast(IStructuredSelection)selection ) { |
| 134 | 143 Object first= (cast(IStructuredSelection) selection).getFirstElement(); |
| 138 | 144 if ( cast(Revision)first ) |
| 134 | 145 fPainter.handleRevisionSelected(cast(Revision) first); |
| 138 | 146 else if ( cast(String)first ) |
| 134 | 147 fPainter.handleRevisionSelected(cast(String) first); |
| 129 | 148 else if (selection.isEmpty()) |
| 134 | 149 fPainter.handleRevisionSelected(cast(Revision) null); |
| 129 | 150 } |
| 151 } | |
| 152 | |
| 153 /** | |
| 154 * Installs the selection provider on the viewer. | |
| 155 * | |
| 156 * @param viewer the viewer on which we listen to for post selection events | |
| 157 */ | |
| 158 void install(ITextViewer viewer) { | |
| 159 uninstall(); | |
| 160 fViewer= viewer; | |
| 161 if (fViewer !is null) { | |
| 162 ISelectionProvider provider= fViewer.getSelectionProvider(); | |
| 138 | 163 if ( cast(IPostSelectionProvider)provider ) { |
| 134 | 164 IPostSelectionProvider postProvider= cast(IPostSelectionProvider) provider; |
| 129 | 165 fSelectionListener= new PostSelectionListener(postProvider); |
| 166 } | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 /** | |
| 171 * Uninstalls the selection provider. | |
| 172 */ | |
| 173 void uninstall() { | |
| 174 fViewer= null; | |
| 175 if (fSelectionListener !is null) { | |
| 176 fSelectionListener.dispose(); | |
| 177 fSelectionListener= null; | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 /** | |
| 182 * Private protocol used by {@link RevisionPainter} to signal selection of a revision. | |
| 183 * | |
| 184 * @param revision the selected revision, or <code>null</code> for none | |
| 185 */ | |
| 186 void revisionSelected(Revision revision) { | |
| 187 setSelectedRevision(revision); | |
| 188 } | |
| 189 | |
| 190 /** | |
| 191 * Updates the currently selected revision and sends out an event if it changed. | |
| 192 * | |
| 193 * @param revision the newly selected revision or <code>null</code> for none | |
| 194 */ | |
| 195 private void setSelectedRevision(Revision revision) { | |
| 196 if (revision !is fSelection) { | |
| 197 fSelection= revision; | |
| 198 fireSelectionEvent(); | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 private void fireSelectionEvent() { | |
| 203 fIgnoreEvents= true; | |
| 204 try { | |
| 205 ISelection selection= getSelection(); | |
| 206 SelectionChangedEvent event= new SelectionChangedEvent(this, selection); | |
| 207 | |
| 208 Object[] listeners= fListeners.getListeners(); | |
| 209 for (int i= 0; i < listeners.length; i++) | |
| 134 | 210 (cast(ISelectionChangedListener) listeners[i]).selectionChanged(event); |
| 129 | 211 } finally { |
| 212 fIgnoreEvents= false; | |
| 213 } | |
| 214 } | |
| 215 } |