--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.text.link;
+
+import java.lang.reflect.InvocationTargetException;
+
+import net.sourceforge.phpdt.internal.ui.util.ExceptionHandler;
+import net.sourceforge.phpdt.ui.PreferenceConstants;
+import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.jface.preference.PreferenceConverter;
+//incastrix
+//import org.eclipse.jface.text.Assert;
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.BadPositionCategoryException;
+import org.eclipse.jface.text.DefaultPositionUpdater;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IPositionUpdater;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.IRewriteTarget;
+import org.eclipse.jface.text.ITextInputListener;
+import org.eclipse.jface.text.ITextListener;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.ITextViewerExtension;
+import org.eclipse.jface.text.ITextViewerExtension2;
+import org.eclipse.jface.text.ITextViewerExtension5;
+import org.eclipse.jface.text.Position;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.TextEvent;
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.util.PropertyChangeEvent;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.StyledText;
+import org.eclipse.swt.custom.VerifyKeyListener;
+import org.eclipse.swt.events.ModifyEvent;
+import org.eclipse.swt.events.ModifyListener;
+import org.eclipse.swt.events.PaintEvent;
+import org.eclipse.swt.events.PaintListener;
+import org.eclipse.swt.events.ShellEvent;
+import org.eclipse.swt.events.ShellListener;
+import org.eclipse.swt.events.VerifyEvent;
+import org.eclipse.swt.events.VerifyListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+
+/**
+ * A user interface for <code>LinkedPositionManager</code>, using
+ * <code>ITextViewer</code>.
+ */
+public class LinkedPositionUI implements ILinkedPositionListener,
+ ITextInputListener, ITextListener, ModifyListener, VerifyListener,
+ VerifyKeyListener, PaintListener, IPropertyChangeListener,
+ ShellListener {
+
+ /**
+ * A listener for notification when the user cancelled the edit operation.
+ */
+ public interface ExitListener {
+ void exit(boolean accept);
+ }
+
+ public static class ExitFlags {
+ public int flags;
+
+ public boolean doit;
+
+ public ExitFlags(int flags, boolean doit) {
+ this.flags = flags;
+ this.doit = doit;
+ }
+ }
+
+ public interface ExitPolicy {
+ ExitFlags doExit(LinkedPositionManager manager, VerifyEvent event,
+ int offset, int length);
+ }
+
+ // leave flags
+ private static final int UNINSTALL = 1; // uninstall linked position manager
+
+ public static final int COMMIT = 2; // commit changes
+
+ private static final int DOCUMENT_CHANGED = 4; // document has changed
+
+ public static final int UPDATE_CARET = 8; // update caret
+
+ private static final IPreferenceStore fgStore = PHPeclipsePlugin
+ .getDefault().getPreferenceStore();
+
+ private static final String CARET_POSITION_PREFIX = "LinkedPositionUI.caret.position"; //$NON-NLS-1$
+
+ private static int fgCounter = 0;
+
+ private final ITextViewer fViewer;
+
+ private final LinkedPositionManager fManager;
+
+ private final IPositionUpdater fUpdater;
+
+ private final String fPositionCategoryName;
+
+ private Color fFrameColor;
+
+ private int fFinalCaretOffset = -1; // no final caret offset
+
+ private Position fFinalCaretPosition;
+
+ private Position fFramePosition;
+
+ private int fInitialOffset = -1;
+
+ private int fCaretOffset;
+
+ private ExitPolicy fExitPolicy;
+
+ private ExitListener fExitListener;
+
+ private boolean fNeedRedraw;
+
+ private String fContentType;
+
+ private Position fPreviousPosition;
+
+ // private ContentAssistant2 fAssistant;
+
+ /**
+ * Flag that records the state of this ui object. As there are many
+ * different entities that may call leave or exit, these cannot always be
+ * sure whether the linked position infrastructure is still active. This is
+ * especially true for multithreaded situations.
+ */
+ private boolean fIsActive = false;
+
+ /**
+ * Creates a user interface for <code>LinkedPositionManager</code>.
+ *
+ * @param viewer
+ * the text viewer.
+ * @param manager
+ * the <code>LinkedPositionManager</code> managing a
+ * <code>IDocument</code> of the <code>ITextViewer</code>.
+ */
+ public LinkedPositionUI(ITextViewer viewer, LinkedPositionManager manager) {
+ Assert.isNotNull(viewer);
+ Assert.isNotNull(manager);
+
+ fViewer = viewer;
+ fManager = manager;
+
+ fPositionCategoryName = CARET_POSITION_PREFIX + (fgCounter++);
+ fUpdater = new DefaultPositionUpdater(fPositionCategoryName);
+
+ fManager.setLinkedPositionListener(this);
+
+ initializeHighlightColor(viewer);
+ }
+
+ /*
+ * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
+ */
+ public void propertyChange(PropertyChangeEvent event) {
+ if (event.getProperty().equals(
+ PreferenceConstants.EDITOR_LINKED_POSITION_COLOR)) {
+ initializeHighlightColor(fViewer);
+ redrawRegion();
+ }
+ }
+
+ private void initializeHighlightColor(ITextViewer viewer) {
+
+ if (fFrameColor != null)
+ fFrameColor.dispose();
+
+ StyledText text = viewer.getTextWidget();
+ if (text != null) {
+ Display display = text.getDisplay();
+ fFrameColor = createColor(fgStore,
+ PreferenceConstants.EDITOR_LINKED_POSITION_COLOR, display);
+ }
+ }
+
+ /**
+ * Creates a color from the information stored in the given preference
+ * store. Returns <code>null</code> if there is no such information
+ * available.
+ */
+ private Color createColor(IPreferenceStore store, String key,
+ Display display) {
+
+ RGB rgb = null;
+
+ if (store.contains(key)) {
+
+ if (store.isDefault(key))
+ rgb = PreferenceConverter.getDefaultColor(store, key);
+ else
+ rgb = PreferenceConverter.getColor(store, key);
+
+ if (rgb != null)
+ return new Color(display, rgb);
+ }
+
+ return null;
+ }
+
+ /**
+ * Sets the initial offset.
+ *
+ * @param offset
+ */
+// public void setInitialOffset(int offset) {
+// fInitialOffset = offset;
+// }
+
+ /**
+ * Sets the final position of the caret when the linked mode is exited
+ * successfully by leaving the last linked position using TAB. The set
+ * position will be a TAB stop as well as the positions configured in the
+ * <code>LinkedPositionManager</code>.
+ */
+ public void setFinalCaretOffset(int offset) {
+ fFinalCaretOffset = offset;
+ }
+
+ /**
+ * Sets a <code>CancelListener</code> which is notified if the linked mode
+ * is exited unsuccessfully by hitting ESC.
+ */
+ public void setCancelListener(ExitListener listener) {
+ fExitListener = listener;
+ }
+
+ /**
+ * Sets an <code>ExitPolicy</code> which decides when and how the linked
+ * mode is exited.
+ */
+ public void setExitPolicy(ExitPolicy policy) {
+ fExitPolicy = policy;
+ }
+
+ /*
+ * @see LinkedPositionManager.LinkedPositionListener#setCurrentPositions(Position,
+ * int)
+ */
+ public void setCurrentPosition(Position position, int caretOffset) {
+ if (!fIsActive)
+ ;// JavaPlugin.log(new Status(IStatus.WARNING,
+ // JavaPlugin.getPluginId(), IStatus.OK, "LinkedPositionUI is
+ // not active: "+fPositionCategoryName, new
+ // IllegalStateException())); //$NON-NLS-1$
+
+ if (!fFramePosition.equals(position)) {
+ fNeedRedraw = true;
+ fFramePosition = position;
+ }
+
+ fCaretOffset = caretOffset;
+ }
+
+ /**
+ * Enters the linked mode. The linked mode can be left by calling
+ * <code>exit</code>.
+ *
+ * @see #exit(boolean)
+ */
+ public void enter() {
+ if (fIsActive)
+ ;// JavaPlugin.log(new Status(IStatus.WARNING,
+ // JavaPlugin.getPluginId(), IStatus.OK, "LinkedPositionUI is
+ // already active: "+fPositionCategoryName, new
+ // IllegalStateException())); //$NON-NLS-1$
+ else {
+ fIsActive = true;
+ // JavaPlugin.log(new Status(IStatus.INFO, JavaPlugin.getPluginId(),
+ // IStatus.OK, "LinkedPositionUI activated: "+fPositionCategoryName,
+ // new Exception())); //$NON-NLS-1$
+ }
+
+ // track final caret
+ IDocument document = fViewer.getDocument();
+ document.addPositionCategory(fPositionCategoryName);
+ document.addPositionUpdater(fUpdater);
+
+ try {
+ if (fFinalCaretOffset != -1) {
+ fFinalCaretPosition = new Position(fFinalCaretOffset);
+ document
+ .addPosition(fPositionCategoryName, fFinalCaretPosition);
+ }
+ } catch (BadLocationException e) {
+ handleException(fViewer.getTextWidget().getShell(), e);
+
+ } catch (BadPositionCategoryException e) {
+ PHPeclipsePlugin.log(e);
+ Assert.isTrue(false);
+ }
+
+ fViewer.addTextInputListener(this);
+ fViewer.addTextListener(this);
+
+ ITextViewerExtension extension = (ITextViewerExtension) fViewer;
+ extension.prependVerifyKeyListener(this);
+
+ StyledText text = fViewer.getTextWidget();
+ text.addVerifyListener(this);
+ text.addModifyListener(this);
+ text.addPaintListener(this);
+ text.showSelection();
+
+ Shell shell = text.getShell();
+ shell.addShellListener(this);
+
+ fFramePosition = (fInitialOffset == -1) ? fManager.getFirstPosition()
+ : fManager.getPosition(fInitialOffset);
+ if (fFramePosition == null) {
+ leave(UNINSTALL | COMMIT | UPDATE_CARET);
+ return;
+ }
+
+ fgStore.addPropertyChangeListener(this);
+
+ // try {
+ // fContentType= TextUtilities.getContentType(document,
+ // IJavaPartitions.JAVA_PARTITIONING, fFramePosition.offset);
+ // if (fViewer instanceof ITextViewerExtension2) {
+ // ((ITextViewerExtension2) fViewer).prependAutoEditStrategy(fManager,
+ // fContentType);
+ // } else {
+ // Assert.isTrue(false);
+ // }
+ //
+ // } catch (BadLocationException e) {
+ // handleException(fViewer.getTextWidget().getShell(), e);
+ // }
+ try {
+ fContentType = document.getContentType(fFramePosition.offset);
+ if (fViewer instanceof ITextViewerExtension2) {
+ ((ITextViewerExtension2) fViewer).prependAutoEditStrategy(
+ fManager, fContentType);
+ } else {
+ Assert.isTrue(false);
+ }
+
+ } catch (BadLocationException e) {
+ handleException(fViewer.getTextWidget().getShell(), e);
+ }
+ selectRegion();
+ // triggerContentAssist();
+ }
+
+ /*
+ * @see net.sourceforge.phpdt.internal.ui.text.link.ILinkedPositionListener#exit(boolean)
+ */
+ public void exit(int flags) {
+ leave(flags);
+ }
+
+ /**
+ * Returns the cursor selection, after having entered the linked mode.
+ * <code>enter()</code> must be called prior to a call to this method.
+ */
+ public IRegion getSelectedRegion() {
+ if (!fIsActive)
+ ;// JavaPlugin.log(new Status(IStatus.WARNING,
+ // JavaPlugin.getPluginId(), IStatus.OK, "LinkedPositionUI is
+ // not active: "+fPositionCategoryName, new
+ // IllegalStateException())); //$NON-NLS-1$
+
+ if (fFramePosition == null)
+ return new Region(fFinalCaretOffset, 0);
+ else
+ return new Region(fFramePosition.getOffset(), fFramePosition
+ .getLength());
+ }
+
+ private void leave(int flags) {
+ if (!fIsActive)
+ ;// JavaPlugin.log(new Status(IStatus.WARNING,
+ // JavaPlugin.getPluginId(), IStatus.OK, "LinkedPositionUI is
+ // not active: "+fPositionCategoryName, new
+ // IllegalStateException())); //$NON-NLS-1$
+ else {
+ fIsActive = false;
+ // JavaPlugin.log(new Status(IStatus.INFO, JavaPlugin.getPluginId(),
+ // IStatus.OK, "LinkedPositionUI deactivated:
+ // "+fPositionCategoryName, new Exception())); //$NON-NLS-1$
+ }
+
+ fInitialOffset = -1;
+
+ if ((flags & UNINSTALL) != 0)
+ fManager.uninstall((flags & COMMIT) != 0);
+
+ fgStore.removePropertyChangeListener(this);
+
+ if (fFrameColor != null) {
+ fFrameColor.dispose();
+ fFrameColor = null;
+ }
+
+ StyledText text = fViewer.getTextWidget();
+ // bail out if the styled text is null, meaning the viewer has been
+ // disposed (-> document is null as well)
+ // see pr https://bugs.eclipse.org/bugs/show_bug.cgi?id=46821
+ if (text == null)
+ return;
+
+ text.removePaintListener(this);
+ text.removeModifyListener(this);
+ text.removeVerifyListener(this);
+
+ Shell shell = text.getShell();
+ shell.removeShellListener(this);
+
+ // if (fAssistant != null) {
+ // Display display= text.getDisplay();
+ // if (display != null && !display.isDisposed()) {
+ // display.asyncExec(new Runnable() {
+ // public void run() {
+ // if (fAssistant != null) {
+ // fAssistant.uninstall();
+ // fAssistant= null;
+ // }
+ // }
+ // });
+ // }
+ // }
+
+ ITextViewerExtension extension = (ITextViewerExtension) fViewer;
+ extension.removeVerifyKeyListener(this);
+
+ IRewriteTarget target = extension.getRewriteTarget();
+ target.endCompoundChange();
+
+ if (fViewer instanceof ITextViewerExtension2 && fContentType != null)
+ ((ITextViewerExtension2) fViewer).removeAutoEditStrategy(fManager,
+ fContentType);
+ fContentType = null;
+
+ fViewer.removeTextListener(this);
+ fViewer.removeTextInputListener(this);
+
+ try {
+ IDocument document = fViewer.getDocument();
+
+ if (((flags & COMMIT) != 0) && ((flags & DOCUMENT_CHANGED) == 0)
+ && ((flags & UPDATE_CARET) != 0)) {
+ Position[] positions = document
+ .getPositions(fPositionCategoryName);
+ if ((positions != null) && (positions.length != 0)) {
+
+ if (fViewer instanceof ITextViewerExtension5) {
+ ITextViewerExtension5 extension3 = (ITextViewerExtension5) fViewer;
+ int widgetOffset = extension3
+ .modelOffset2WidgetOffset(positions[0]
+ .getOffset());
+ if (widgetOffset >= 0)
+ text.setSelection(widgetOffset, widgetOffset);
+
+ } else {
+ IRegion region = fViewer.getVisibleRegion();
+ int offset = positions[0].getOffset()
+ - region.getOffset();
+ if ((offset >= 0) && (offset <= region.getLength()))
+ text.setSelection(offset, offset);
+ }
+ }
+ }
+
+ document.removePositionUpdater(fUpdater);
+ document.removePositionCategory(fPositionCategoryName);
+
+ if (fExitListener != null)
+ fExitListener.exit(((flags & COMMIT) != 0)
+ || ((flags & DOCUMENT_CHANGED) != 0));
+
+ } catch (BadPositionCategoryException e) {
+ PHPeclipsePlugin.log(e);
+ Assert.isTrue(false);
+ }
+
+ if ((flags & DOCUMENT_CHANGED) == 0)
+ text.redraw();
+ }
+
+ private void next() {
+ if (!fIsActive)
+ ;// JavaPlugin.log(new Status(IStatus.WARNING,
+ // JavaPlugin.getPluginId(), IStatus.OK, "LinkedPositionUI is
+ // not active: "+fPositionCategoryName, new
+ // IllegalStateException())); //$NON-NLS-1$
+
+ redrawRegion();
+
+ if (fFramePosition == fFinalCaretPosition)
+ fFramePosition = fManager.getFirstPosition();
+ else
+ fFramePosition = fManager.getNextPosition(fFramePosition
+ .getOffset());
+ if (fFramePosition == null) {
+ if (fFinalCaretPosition != null)
+ fFramePosition = fFinalCaretPosition;
+ else
+ fFramePosition = fManager.getFirstPosition();
+ }
+ if (fFramePosition == null) {
+ leave(UNINSTALL | COMMIT | UPDATE_CARET);
+ } else {
+ selectRegion();
+ // triggerContentAssist();
+ redrawRegion();
+ }
+ }
+
+ private void previous() {
+ if (!fIsActive)
+ ;// JavaPlugin.log(new Status(IStatus.WARNING,
+ // JavaPlugin.getPluginId(), IStatus.OK, "LinkedPositionUI is
+ // not active: "+fPositionCategoryName, new
+ // IllegalStateException())); //$NON-NLS-1$
+
+ redrawRegion();
+
+ fFramePosition = fManager.getPreviousPosition(fFramePosition
+ .getOffset());
+ if (fFramePosition == null) {
+ if (fFinalCaretPosition != null)
+ fFramePosition = fFinalCaretPosition;
+ else
+ fFramePosition = fManager.getLastPosition();
+ }
+ if (fFramePosition == null) {
+ leave(UNINSTALL | COMMIT | UPDATE_CARET);
+ } else {
+ selectRegion();
+ // triggerContentAssist();
+ redrawRegion();
+ }
+ }
+
+ /** Trigger content assist on choice positions */
+ // private void triggerContentAssist() {
+ // if (fFramePosition instanceof ProposalPosition) {
+ //
+ // ProposalPosition pp= (ProposalPosition) fFramePosition;
+ // initializeContentAssistant();
+ // if (fAssistant == null)
+ // return;
+ // fAssistant.setCompletions(pp.getChoices());
+ // fAssistant.showPossibleCompletions();
+ // } else {
+ // if (fAssistant != null)
+ // fAssistant.setCompletions(new ICompletionProposal[0]);
+ // }
+ // }
+ /** Lazy initialize content assistant for this linked ui */
+ // private void initializeContentAssistant() {
+ // if (fAssistant != null)
+ // return;
+ // fAssistant= new ContentAssistant2();
+ // fAssistant.setDocumentPartitioning(IJavaPartitions.JAVA_PARTITIONING);
+ // fAssistant.install(fViewer);
+ // }
+ /*
+ * @see VerifyKeyListener#verifyKey(VerifyEvent)
+ */
+ public void verifyKey(VerifyEvent event) {
+
+ if (!event.doit || !fIsActive)
+ return;
+
+ Point selection = fViewer.getSelectedRange();
+ int offset = selection.x;
+ int length = selection.y;
+
+ ExitFlags exitFlags = fExitPolicy == null ? null : fExitPolicy.doExit(
+ fManager, event, offset, length);
+ if (exitFlags != null) {
+ leave(UNINSTALL | exitFlags.flags);
+ event.doit = exitFlags.doit;
+ return;
+ }
+
+ switch (event.character) {
+ // [SHIFT-]TAB = hop between edit boxes
+ case 0x09: {
+ // if tab was treated as a document change, would it exceed variable
+ // range?
+ if (!LinkedPositionManager.includes(fFramePosition, offset, length)) {
+ leave(UNINSTALL | COMMIT);
+ return;
+ }
+ }
+
+ if (event.stateMask == SWT.SHIFT)
+ previous();
+ else
+ next();
+
+ event.doit = false;
+ break;
+
+ // ENTER
+ case 0x0A: // Ctrl+Enter
+ case 0x0D: {
+ // if (fAssistant != null && fAssistant.wasProposalChosen()) {
+ // next();
+ // event.doit= false;
+ // break;
+ // }
+
+ // if enter was treated as a document change, would it exceed
+ // variable range?
+ if (!LinkedPositionManager.includes(fFramePosition, offset, length)
+ || (fFramePosition == fFinalCaretPosition)) {
+ leave(UNINSTALL | COMMIT);
+ return;
+ }
+ }
+
+ leave(UNINSTALL | COMMIT | UPDATE_CARET);
+ event.doit = false;
+ break;
+
+ // ESC
+ case 0x1B:
+ leave(UNINSTALL | COMMIT);
+ event.doit = false;
+ break;
+
+ case ';':
+ leave(UNINSTALL | COMMIT);
+ event.doit = true;
+ break;
+
+ default:
+ if (event.character != 0) {
+ if (!controlUndoBehavior(offset, length)
+ || fFramePosition == fFinalCaretPosition) {
+ leave(UNINSTALL | COMMIT);
+ break;
+ }
+ }
+ }
+ }
+
+ private boolean controlUndoBehavior(int offset, int length) {
+
+ Position position = fManager.getEmbracingPosition(offset, length);
+ if (position != null) {
+
+ ITextViewerExtension extension = (ITextViewerExtension) fViewer;
+ IRewriteTarget target = extension.getRewriteTarget();
+
+ if (fPreviousPosition != null
+ && !fPreviousPosition.equals(position))
+ target.endCompoundChange();
+ target.beginCompoundChange();
+ }
+
+ fPreviousPosition = position;
+ return fPreviousPosition != null;
+ }
+
+ /*
+ * @see VerifyListener#verifyText(VerifyEvent)
+ */
+ public void verifyText(VerifyEvent event) {
+ if (!event.doit)
+ return;
+
+ int offset = 0;
+ int length = 0;
+
+ if (fViewer instanceof ITextViewerExtension5) {
+ ITextViewerExtension5 extension = (ITextViewerExtension5) fViewer;
+ IRegion modelRange = extension.widgetRange2ModelRange(new Region(
+ event.start, event.end - event.start));
+ if (modelRange == null)
+ return;
+
+ offset = modelRange.getOffset();
+ length = modelRange.getLength();
+
+ } else {
+ IRegion visibleRegion = fViewer.getVisibleRegion();
+ offset = event.start + visibleRegion.getOffset();
+ length = event.end - event.start;
+ }
+
+ // allow changes only within linked positions when coming through UI
+ if (!fManager.anyPositionIncludes(offset, length))
+ leave(UNINSTALL | COMMIT);
+ }
+
+ /*
+ * @see PaintListener#paintControl(PaintEvent)
+ */
+ public void paintControl(PaintEvent event) {
+ if (fFramePosition == null)
+ return;
+
+ IRegion widgetRange = asWidgetRange(fFramePosition);
+ if (widgetRange == null) {
+ leave(UNINSTALL | COMMIT | DOCUMENT_CHANGED);
+ return;
+ }
+
+ int offset = widgetRange.getOffset();
+ int length = widgetRange.getLength();
+
+ StyledText text = fViewer.getTextWidget();
+
+ // support for bidi
+ Point minLocation = getMinimumLocation(text, offset, length);
+ Point maxLocation = getMaximumLocation(text, offset, length);
+
+ int x1 = minLocation.x;
+ int x2 = minLocation.x + maxLocation.x - minLocation.x - 1;
+ int y = minLocation.y + text.getLineHeight() - 1;
+
+ GC gc = event.gc;
+ gc.setForeground(fFrameColor);
+ gc.drawLine(x1, y, x2, y);
+ }
+
+ protected IRegion asWidgetRange(Position position) {
+ if (fViewer instanceof ITextViewerExtension5) {
+
+ ITextViewerExtension5 extension = (ITextViewerExtension5) fViewer;
+ return extension.modelRange2WidgetRange(new Region(position
+ .getOffset(), position.getLength()));
+
+ } else {
+
+ IRegion region = fViewer.getVisibleRegion();
+ if (includes(region, position))
+ return new Region(position.getOffset() - region.getOffset(),
+ position.getLength());
+ }
+
+ return null;
+ }
+
+ private static Point getMinimumLocation(StyledText text, int offset,
+ int length) {
+ Point minLocation = new Point(Integer.MAX_VALUE, Integer.MAX_VALUE);
+
+ for (int i = 0; i <= length; i++) {
+ Point location = text.getLocationAtOffset(offset + i);
+
+ if (location.x < minLocation.x)
+ minLocation.x = location.x;
+ if (location.y < minLocation.y)
+ minLocation.y = location.y;
+ }
+
+ return minLocation;
+ }
+
+ private static Point getMaximumLocation(StyledText text, int offset,
+ int length) {
+ Point maxLocation = new Point(Integer.MIN_VALUE, Integer.MIN_VALUE);
+
+ for (int i = 0; i <= length; i++) {
+ Point location = text.getLocationAtOffset(offset + i);
+
+ if (location.x > maxLocation.x)
+ maxLocation.x = location.x;
+ if (location.y > maxLocation.y)
+ maxLocation.y = location.y;
+ }
+
+ return maxLocation;
+ }
+
+ private void redrawRegion() {
+ IRegion widgetRange = asWidgetRange(fFramePosition);
+ if (widgetRange == null) {
+ leave(UNINSTALL | COMMIT | DOCUMENT_CHANGED);
+ return;
+ }
+
+ StyledText text = fViewer.getTextWidget();
+ if (text != null && !text.isDisposed())
+ text.redrawRange(widgetRange.getOffset(), widgetRange.getLength(),
+ true);
+ }
+
+ private void selectRegion() {
+
+ IRegion widgetRange = asWidgetRange(fFramePosition);
+ if (widgetRange == null) {
+ leave(UNINSTALL | COMMIT | DOCUMENT_CHANGED);
+ return;
+ }
+
+ StyledText text = fViewer.getTextWidget();
+ if (text != null && !text.isDisposed()) {
+ int start = widgetRange.getOffset();
+ int end = widgetRange.getLength() + start;
+ text.setSelection(start, end);
+ }
+ }
+
+ private void updateCaret() {
+
+ IRegion widgetRange = asWidgetRange(fFramePosition);
+ if (widgetRange == null) {
+ leave(UNINSTALL | COMMIT | DOCUMENT_CHANGED);
+ return;
+ }
+
+ int offset = widgetRange.getOffset() + fCaretOffset;
+ StyledText text = fViewer.getTextWidget();
+ if (text != null && !text.isDisposed())
+ text.setCaretOffset(offset);
+ }
+
+ /*
+ * @see ModifyListener#modifyText(ModifyEvent)
+ */
+ public void modifyText(ModifyEvent e) {
+ // reposition caret after StyledText
+ redrawRegion();
+ updateCaret();
+ }
+
+ private static void handleException(Shell shell, Exception e) {
+ String title = LinkedPositionMessages
+ .getString("LinkedPositionUI.error.title"); //$NON-NLS-1$
+ if (e instanceof CoreException)
+ ExceptionHandler.handle((CoreException) e, shell, title, null);
+ else if (e instanceof InvocationTargetException)
+ ExceptionHandler.handle((InvocationTargetException) e, shell,
+ title, null);
+ else {
+ MessageDialog.openError(shell, title, e.getMessage());
+ PHPeclipsePlugin.log(e);
+ }
+ }
+
+ /*
+ * @see ITextInputListener#inputDocumentAboutToBeChanged(IDocument,
+ * IDocument)
+ */
+ public void inputDocumentAboutToBeChanged(IDocument oldInput,
+ IDocument newInput) {
+ // 5326: leave linked mode on document change
+ int flags = UNINSTALL | COMMIT
+ | (oldInput.equals(newInput) ? 0 : DOCUMENT_CHANGED);
+ leave(flags);
+ }
+
+ /*
+ * @see ITextInputListener#inputDocumentChanged(IDocument, IDocument)
+ */
+ public void inputDocumentChanged(IDocument oldInput, IDocument newInput) {
+ }
+
+ private static boolean includes(IRegion region, Position position) {
+ return position.getOffset() >= region.getOffset()
+ && position.getOffset() + position.getLength() <= region
+ .getOffset()
+ + region.getLength();
+ }
+
+ /*
+ * @see org.eclipse.jface.text.ITextListener#textChanged(TextEvent)
+ */
+ public void textChanged(TextEvent event) {
+ if (!fNeedRedraw)
+ return;
+
+ redrawRegion();
+ fNeedRedraw = false;
+ }
+
+ /*
+ * @see org.eclipse.swt.events.ShellListener#shellActivated(org.eclipse.swt.events.ShellEvent)
+ */
+ public void shellActivated(ShellEvent event) {
+ }
+
+ /*
+ * @see org.eclipse.swt.events.ShellListener#shellClosed(org.eclipse.swt.events.ShellEvent)
+ */
+ public void shellClosed(ShellEvent event) {
+ leave(UNINSTALL | COMMIT | DOCUMENT_CHANGED);
+ }
+
+ /*
+ * @see org.eclipse.swt.events.ShellListener#shellDeactivated(org.eclipse.swt.events.ShellEvent)
+ */
+ public void shellDeactivated(ShellEvent event) {
+ // don't deactivate on focus lost, since the proposal popups may take
+ // focus
+ // plus: it doesn't hurt if you can check with another window without
+ // losing linked mode
+ // since there is no intrusive popup sticking out.
+
+ // need to check first what happens on reentering based on an open
+ // action
+ // Seems to be no problem
+
+ // TODO check whether we can leave it or uncomment it after debugging
+ // PS: why DOCUMENT_CHANGED? We want to trigger a redraw! (Shell
+ // deactivated does not mean
+ // it is not visible any longer.
+ // leave(UNINSTALL | COMMIT | DOCUMENT_CHANGED);
+
+ // Better:
+ // Check with content assistant and only leave if its not the proposal
+ // shell that took the
+ // focus away.
+
+ StyledText text;
+ Display display;
+
+ // if (fAssistant == null || fViewer == null || (text=
+ // fViewer.getTextWidget()) == null
+ // || (display= text.getDisplay()) == null || display.isDisposed()) {
+ if (fViewer == null || (text = fViewer.getTextWidget()) == null
+ || (display = text.getDisplay()) == null
+ || display.isDisposed()) {
+ leave(UNINSTALL | COMMIT);
+ } else {
+ // Post in UI thread since the assistant popup will only get the
+ // focus after we lose it.
+ display.asyncExec(new Runnable() {
+ public void run() {
+ // TODO add isDisposed / isUninstalled / hasLeft check? for
+ // now: check for content type,
+ // since it gets nullified in leave()
+ if (fIsActive) {// && (fAssistant == null ||
+ // !fAssistant.hasFocus())) {
+ leave(UNINSTALL | COMMIT);
+ }
+ }
+ });
+ }
+ }
+
+ /*
+ * @see org.eclipse.swt.events.ShellListener#shellDeiconified(org.eclipse.swt.events.ShellEvent)
+ */
+ public void shellDeiconified(ShellEvent event) {
+ }
+
+ /*
+ * @see org.eclipse.swt.events.ShellListener#shellIconified(org.eclipse.swt.events.ShellEvent)
+ */
+ public void shellIconified(ShellEvent event) {
+ leave(UNINSTALL | COMMIT | DOCUMENT_CHANGED);
+ }
+
+}
git://secure.phpeclipse.com / phpeclipse.git / blobdiff