diff options
Diffstat (limited to 'bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/CaretMediator.java')
| -rw-r--r-- | bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/CaretMediator.java | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/CaretMediator.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/CaretMediator.java deleted file mode 100644 index e78d4678a8..0000000000 --- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/CaretMediator.java +++ /dev/null @@ -1,284 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2004 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - * Jens Lukowski/Innoopract - initial renaming/restructuring - * - *******************************************************************************/ -package org.eclipse.wst.sse.ui.internal; - -import org.eclipse.core.runtime.IProgressMonitor; -import org.eclipse.core.runtime.IStatus; -import org.eclipse.core.runtime.Status; -import org.eclipse.core.runtime.jobs.Job; -import org.eclipse.swt.SWT; -import org.eclipse.swt.custom.StyledText; -import org.eclipse.swt.events.KeyEvent; -import org.eclipse.swt.events.KeyListener; -import org.eclipse.swt.events.MouseEvent; -import org.eclipse.swt.events.MouseListener; -import org.eclipse.swt.widgets.Display; -import org.eclipse.swt.widgets.Event; -import org.eclipse.swt.widgets.Listener; -import org.eclipse.wst.sse.core.internal.util.Debug; -import org.eclipse.wst.sse.core.internal.util.Utilities; -import org.eclipse.wst.sse.ui.internal.view.events.CaretEvent; -import org.eclipse.wst.sse.ui.internal.view.events.ICaretListener; - -/** - * Has the responsibility of listening for key events, and mouse events, - * deciding if the caret has moved (without a text change), and if so, will - * notify CaretListeners that the caret has moved. Objects which are - * interested in ALL caret postion changes will also have to listen for - * textChanged events. - * - * @deprecated - use base selection notification - */ -public class CaretMediator implements Listener { - - class CaretMediatorListener implements KeyListener, MouseListener { - public void keyPressed(KeyEvent e) { - internalKeyPressed(e); - } - - public void keyReleased(KeyEvent e) { - internalKeyReleased(e); - } - - public void mouseDoubleClick(MouseEvent e) { - } - - public void mouseDown(MouseEvent e) { - internalMouseDown(e); - } - - public void mouseUp(MouseEvent e) { - internalMouseUp(e); - } - } - - class RefreshDelayJob extends Job { - private int fDelay = 0; - RefreshDelayJob(int delay) { - super(SSEUIMessages.caret_update); //$NON-NLS-1$ - setSystem(true); - fDelay = delay; - } - - /** - * Setup a delayed CaretEvent firing - */ - void touch() { - cancel(); - schedule(fDelay); - } - - protected IStatus run(IProgressMonitor monitor) { - handleEvent(null); - return Status.OK_STATUS; - } - } - - RefreshDelayJob fDelayer = null; - private static final int DELAY = 300; - - /** used just for debug print outs */ - private long endTime; - private long startTime; - - protected ICaretListener[] fCaretListeners; - protected CaretMediatorListener internalListener; - protected StyledText textWidget; - - /** - * CaretMediator constructor comment. - */ - public CaretMediator() { - super(); - } - - /** - * CaretMediator constructor comment. Must always provide the widget its - * supposed to listen to. - */ - public CaretMediator(StyledText styledTextWidget) { - this(); - setTextWidget(styledTextWidget); - } - - public synchronized void addCaretListener(ICaretListener listener) { - if (Debug.debugStructuredDocument) { - System.out.println("CaretMediator::addCaretListener. Request to add an instance of " + listener.getClass() + " as a listener on caretlistner.");//$NON-NLS-2$//$NON-NLS-1$ - } - // make sure listener is not already in listening array - // (and if it is, print a warning to aid debugging, if needed) - - if (Utilities.contains(fCaretListeners, listener)) { - if (Debug.displayWarnings) { - System.out.println("CaretMediator::addCaretListener. listener " + listener + " was added more than once. ");//$NON-NLS-2$//$NON-NLS-1$ - } - } else { - if (Debug.debugStructuredDocument) { - System.out.println("CaretMediator::addCaretListener. Adding an instance of " + listener.getClass() + " as a listener on caret mediator.");//$NON-NLS-2$//$NON-NLS-1$ - } - int oldSize = 0; - if (fCaretListeners != null) { - // normally won't be null, but we need to be sure, for first - // time through - oldSize = fCaretListeners.length; - } - int newSize = oldSize + 1; - ICaretListener[] newListeners = new ICaretListener[newSize]; - if (fCaretListeners != null) { - System.arraycopy(fCaretListeners, 0, newListeners, 0, oldSize); - } - // add listener to last position - newListeners[newSize - 1] = listener; - // - // now switch new for old - fCaretListeners = newListeners; - - } - } - - protected void fireCaretEvent(CaretEvent event) { - if (fCaretListeners != null) { - // we must assign listeners to local variable to be thread safe, - // since the add and remove listner methods - // can change this object's actual instance of the listener array - // from another thread - // (and since object assignment is atomic, we don't need to - // synchronize - ICaretListener[] holdListeners = fCaretListeners; - // - for (int i = 0; i < holdListeners.length; i++) { - holdListeners[i].caretMoved(event); - } - } - } - - public void handleEvent(Event e) { - Display display = null; - - if (Debug.debugCaretMediator) { - endTime = System.currentTimeMillis(); - System.out.println("Timer fired: " + (endTime - startTime)); //$NON-NLS-1$ - } - - // check if 'okToUse' - if (textWidget != null && !textWidget.isDisposed()) { - display = textWidget.getDisplay(); - if ((display != null) && (!display.isDisposed())) { - display.asyncExec(new Runnable() { - public void run() { - if (textWidget != null && !textWidget.isDisposed()) { - fireCaretEvent(new CaretEvent(textWidget, textWidget.getCaretOffset())); - } - } - }); - } - } - } - - protected void internalKeyPressed(KeyEvent e) { - fDelayer.cancel(); - } - - protected void internalKeyReleased(KeyEvent e) { - switch (e.keyCode) { - case SWT.ARROW_DOWN : - case SWT.ARROW_UP : - case SWT.ARROW_LEFT : - case SWT.ARROW_RIGHT : - case SWT.HOME : - case SWT.END : - case SWT.PAGE_DOWN : - case SWT.PAGE_UP : { - fDelayer.touch(); - break; - } - default : { - // always update cursor postion, even during normal typing - // (the logic may look funny, since we always to the same - // thing, but we haven't always done the same thing, so I - // wanted to leave that fact documented via code.) - fDelayer.touch(); - } - } - } - - protected void internalMouseDown(MouseEvent e) { - fDelayer.cancel(); - } - - protected void internalMouseUp(MouseEvent e) { - // Note, even during a swipe select, when the mouse button goes up, - // and the widget is - // queried for the current caret postion, it always returns the - // beginning of the selection, - // which is desirable (at least for the known use of this feature, - // which is to signal - // that the property sheet can update itself. - fDelayer.touch(); - } - - public void release() { - fDelayer.cancel(); - if (textWidget != null && !textWidget.isDisposed()) { - textWidget.removeKeyListener(internalListener); - textWidget.removeMouseListener(internalListener); - textWidget = null; - } - } - - public synchronized void removeCaretListener(ICaretListener listener) { - if ((fCaretListeners != null) && (listener != null)) { - // if its not in the listeners, we'll ignore the request - if (Utilities.contains(fCaretListeners, listener)) { - int oldSize = fCaretListeners.length; - int newSize = oldSize - 1; - ICaretListener[] newListeners = new ICaretListener[newSize]; - int index = 0; - for (int i = 0; i < oldSize; i++) { - if (fCaretListeners[i] == listener) { // ignore - } else { - // copy old to new if its not the one we are removing - newListeners[index++] = fCaretListeners[i]; - } - } - // now that we have a new array, let's switch it for the old - // one - fCaretListeners = newListeners; - } - } - } - - public void setTextWidget(StyledText newTextWidget) { - if(fDelayer == null) { - fDelayer = new RefreshDelayJob(DELAY); - } - - // unhook from previous, if any - if (this.textWidget != null) { - fDelayer.cancel(); - this.textWidget.removeKeyListener(internalListener); - this.textWidget.removeMouseListener(internalListener); - } - - this.textWidget = newTextWidget; - - if (internalListener == null) { - internalListener = new CaretMediatorListener(); - } - - if (this.textWidget != null) { - this.textWidget.addKeyListener(internalListener); - this.textWidget.addMouseListener(internalListener); - } - } -} |