Mercurial > projects > dwt-addons
annotate dwtx/jface/internal/text/link/contentassist/AdditionalInfoController2.d @ 167:862b05e0334a
Add a wrapper for Thread
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Tue, 09 Sep 2008 15:59:16 +0200 |
| parents | 1a5b8f8129df |
| children | cef27f663573 |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2008 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 | |
| 131 | 14 |
| 151 | 15 module dwtx.jface.internal.text.link.contentassist.AdditionalInfoController2; |
| 16 | |
| 131 | 17 import dwtx.jface.internal.text.link.contentassist.IProposalListener; // packageimport |
| 18 import dwtx.jface.internal.text.link.contentassist.LineBreakingReader; // packageimport | |
| 19 import dwtx.jface.internal.text.link.contentassist.CompletionProposalPopup2; // packageimport | |
| 20 import dwtx.jface.internal.text.link.contentassist.ContextInformationPopup2; // packageimport | |
| 21 import dwtx.jface.internal.text.link.contentassist.ContentAssistMessages; // packageimport | |
| 22 import dwtx.jface.internal.text.link.contentassist.Helper2; // packageimport | |
| 23 import dwtx.jface.internal.text.link.contentassist.PopupCloser2; // packageimport | |
| 24 import dwtx.jface.internal.text.link.contentassist.IContentAssistListener2; // packageimport | |
| 25 import dwtx.jface.internal.text.link.contentassist.ContentAssistant2; // packageimport | |
| 26 | |
| 129 | 27 import dwt.dwthelper.utils; |
| 167 | 28 import dwtx.dwtxhelper.JThread; |
| 129 | 29 |
| 30 import dwt.events.SelectionEvent; | |
| 31 import dwt.events.SelectionListener; | |
| 32 import dwt.graphics.Point; | |
| 33 import dwt.graphics.Rectangle; | |
| 34 import dwt.widgets.Control; | |
| 35 import dwt.widgets.Table; | |
| 36 import dwt.widgets.TableItem; | |
| 37 import dwtx.core.runtime.Assert; | |
| 38 import dwtx.jface.text.AbstractInformationControlManager; | |
| 39 import dwtx.jface.text.IInformationControl; | |
| 40 import dwtx.jface.text.IInformationControlCreator; | |
| 41 import dwtx.jface.text.contentassist.ICompletionProposal; | |
| 42 import dwtx.jface.text.contentassist.ICompletionProposalExtension3; | |
| 43 | |
| 44 | |
| 45 /** | |
| 46 * Displays the additional information available for a completion proposal. | |
| 47 * | |
| 48 * @since 2.0 | |
| 49 */ | |
| 50 class AdditionalInfoController2 : AbstractInformationControlManager , Runnable { | |
| 51 | |
| 52 /** | |
| 53 * Internal table selection listener. | |
| 54 */ | |
| 55 private class TableSelectionListener : SelectionListener { | |
| 56 | |
| 57 /* | |
| 58 * @see SelectionListener#widgetSelected(SelectionEvent) | |
| 59 */ | |
| 60 public void widgetSelected(SelectionEvent e) { | |
| 61 handleTableSelectionChanged(); | |
| 62 } | |
| 63 | |
| 64 /* | |
| 65 * @see SelectionListener#widgetDefaultSelected(SelectionEvent) | |
| 66 */ | |
| 67 public void widgetDefaultSelected(SelectionEvent e) { | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 | |
| 72 /** The proposal table */ | |
| 73 private Table fProposalTable; | |
| 74 /** The thread controlling the delayed display of the additional info */ | |
| 167 | 75 private JThread fThread; |
| 129 | 76 /** Indicates whether the display delay has been reset */ |
| 77 private bool fIsReset= false; | |
| 78 /** Object to synchronize display thread and table selection changes */ | |
| 159 | 79 private const Object fMutex; |
| 129 | 80 /** Thread access lock. */ |
| 159 | 81 private const Object fThreadAccess; |
| 129 | 82 /** Object to synchronize initial display of additional info */ |
| 83 private Object fStartSignal; | |
| 84 /** The table selection listener */ | |
| 159 | 85 private SelectionListener fSelectionListener; |
| 129 | 86 /** The delay after which additional information is displayed */ |
| 87 private int fDelay; | |
| 88 | |
| 89 | |
| 90 /** | |
| 91 * Creates a new additional information controller. | |
| 92 * | |
| 93 * @param creator the information control creator to be used by this controller | |
| 94 * @param delay time in milliseconds after which additional info should be displayed | |
| 95 */ | |
|
133
7d818bd32d63
Fix ctors to this with gvim regexp
Frank Benoit <benoit@tionex.de>
parents:
131
diff
changeset
|
96 this(IInformationControlCreator creator, int delay) { |
| 159 | 97 fSelectionListener= new TableSelectionListener(); |
| 98 fThreadAccess= new Object(); | |
| 99 fMutex= new Object(); | |
| 129 | 100 super(creator); |
| 101 fDelay= delay; | |
| 102 setAnchor(ANCHOR_RIGHT); | |
| 130 | 103 setFallbackAnchors([ANCHOR_RIGHT, ANCHOR_LEFT, ANCHOR_BOTTOM ]); |
| 129 | 104 } |
| 105 | |
| 106 /* | |
| 107 * @see AbstractInformationControlManager#install(Control) | |
| 108 */ | |
| 109 public void install(Control control) { | |
| 110 | |
| 111 if (fProposalTable is control) { | |
| 112 // already installed | |
| 113 return; | |
| 114 } | |
| 115 | |
| 116 super.install(control); | |
| 117 | |
| 162 | 118 Assert.isTrue( null !is cast(Table)control ); |
| 134 | 119 fProposalTable= cast(Table) control; |
| 129 | 120 fProposalTable.addSelectionListener(fSelectionListener); |
| 121 synchronized (fThreadAccess) { | |
| 122 if (fThread !is null) | |
| 123 fThread.interrupt(); | |
| 167 | 124 fThread= new JThread(this, ContentAssistMessages.getString("InfoPopup.info_delay_timer_name")); //$NON-NLS-1$ |
| 129 | 125 |
| 126 fStartSignal= new Object(); | |
| 127 synchronized (fStartSignal) { | |
| 128 fThread.start(); | |
| 129 try { | |
| 130 // wait until thread is ready | |
| 131 fStartSignal.wait(); | |
| 132 } catch (InterruptedException x) { | |
| 133 } | |
| 134 } | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 /* | |
| 139 * @see AbstractInformationControlManager#disposeInformationControl() | |
| 140 */ | |
| 141 public void disposeInformationControl() { | |
| 142 | |
| 143 synchronized (fThreadAccess) { | |
| 144 if (fThread !is null) { | |
| 145 fThread.interrupt(); | |
| 146 fThread= null; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 if (fProposalTable !is null && !fProposalTable.isDisposed()) { | |
| 151 fProposalTable.removeSelectionListener(fSelectionListener); | |
| 152 fProposalTable= null; | |
| 153 } | |
| 154 | |
| 155 super.disposeInformationControl(); | |
| 156 } | |
| 157 | |
| 158 /* | |
| 159 * @see java.lang.Runnable#run() | |
| 160 */ | |
| 161 public void run() { | |
| 162 try { | |
| 163 while (true) { | |
| 164 | |
| 165 synchronized (fMutex) { | |
| 166 | |
| 167 if (fStartSignal !is null) { | |
| 168 synchronized (fStartSignal) { | |
| 169 fStartSignal.notifyAll(); | |
| 170 fStartSignal= null; | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 // Wait for a selection event to occur. | |
| 175 fMutex.wait(); | |
| 176 | |
| 177 while (true) { | |
| 178 fIsReset= false; | |
| 179 // Delay before showing the popup. | |
| 180 fMutex.wait(fDelay); | |
| 181 if (!fIsReset) | |
| 182 break; | |
| 183 } | |
| 184 } | |
| 185 | |
| 186 if (fProposalTable !is null && !fProposalTable.isDisposed()) { | |
| 135 | 187 fProposalTable.getDisplay().asyncExec(new class() Runnable { |
| 129 | 188 public void run() { |
| 189 if (!fIsReset) | |
| 190 showInformation(); | |
| 191 } | |
| 192 }); | |
| 193 } | |
| 194 | |
| 195 } | |
| 196 } catch (InterruptedException e) { | |
| 197 } | |
| 198 | |
| 199 synchronized (fThreadAccess) { | |
| 200 // only null fThread if it is us! | |
| 167 | 201 if (JThread.currentThread() is fThread) |
| 129 | 202 fThread= null; |
| 203 } | |
| 204 } | |
| 205 | |
| 206 /** | |
| 207 *Handles a change of the line selected in the associated selector. | |
| 208 */ | |
| 209 public void handleTableSelectionChanged() { | |
| 210 | |
| 211 if (fProposalTable !is null && !fProposalTable.isDisposed() && fProposalTable.isVisible()) { | |
| 212 synchronized (fMutex) { | |
| 213 fIsReset= true; | |
| 214 fMutex.notifyAll(); | |
| 215 } | |
| 216 } | |
| 217 } | |
| 218 | |
| 219 /* | |
| 220 * @see AbstractInformationControlManager#computeInformation() | |
| 221 */ | |
| 222 protected void computeInformation() { | |
| 223 | |
| 224 if (fProposalTable is null || fProposalTable.isDisposed()) | |
| 225 return; | |
| 226 | |
| 227 TableItem[] selection= fProposalTable.getSelection(); | |
| 228 if (selection !is null && selection.length > 0) { | |
| 229 | |
| 230 TableItem item= selection[0]; | |
| 231 | |
| 232 // compute information | |
| 233 String information= null; | |
| 234 Object d= item.getData(); | |
| 235 | |
| 138 | 236 if ( cast(ICompletionProposal)d ) { |
| 134 | 237 ICompletionProposal p= cast(ICompletionProposal) d; |
| 129 | 238 information= p.getAdditionalProposalInfo(); |
| 239 } | |
| 240 | |
| 138 | 241 if ( cast(ICompletionProposalExtension3)d ) |
| 134 | 242 setCustomInformationControlCreator((cast(ICompletionProposalExtension3) d).getInformationControlCreator()); |
| 129 | 243 else |
| 244 setCustomInformationControlCreator(null); | |
| 245 | |
| 246 // compute subject area | |
| 247 setMargins(4, -1); | |
| 248 Rectangle area= fProposalTable.getBounds(); | |
| 249 area.x= 0; // subject area is the whole subject control | |
| 250 area.y= 0; | |
| 251 | |
| 252 // set information & subject area | |
| 253 setInformation(information, area); | |
| 254 } | |
| 255 } | |
| 256 | |
| 257 /* | |
| 258 * @see dwtx.jface.text.AbstractInformationControlManager#computeSizeConstraints(Control, IInformationControl) | |
| 259 */ | |
| 260 protected Point computeSizeConstraints(Control subjectControl, IInformationControl informationControl) { | |
| 261 // at least as big as the proposal table | |
| 262 Point sizeConstraint= super.computeSizeConstraints(subjectControl, informationControl); | |
| 263 Point size= subjectControl.getSize(); | |
| 264 if (sizeConstraint.x < size.x) | |
| 265 sizeConstraint.x= size.x; | |
| 266 if (sizeConstraint.y < size.y) | |
| 267 sizeConstraint.y= size.y; | |
| 268 return sizeConstraint; | |
| 269 } | |
| 270 } | |
| 271 | |
| 272 |