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JavaEditor.java
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JavaEditor.java
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/*******************************************************************************
* Copyright (c) 2000, 2022 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Tom Eicher <eclipse@tom.eicher.name> - [formatting] 'Format Element' in JavaDoc does also format method body - https://bugs.eclipse.org/bugs/show_bug.cgi?id=238746
* Tom Eicher (Avaloq Evolution AG) - block selection mode
* Stefan Xenos (sxenos@gmail.com) - bug 306646, make editor margins follow the java formatter preference
* Angelo Zerr <angelo.zerr@gmail.com> - [CodeMining] Update CodeMinings with IJavaReconcilingListener - Bug 530825
* Red Hat Inc. - Add raw paste functionality - Bug 522218
*******************************************************************************/
package org.eclipse.jdt.internal.ui.javaeditor;
import java.lang.StackWalker.StackFrame;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.BreakIterator;
import java.text.CharacterIterator;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.function.Predicate;
import org.osgi.service.prefs.BackingStoreException;
import org.eclipse.help.IContextProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ST;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.core.commands.operations.IOperationApprover;
import org.eclipse.core.commands.operations.IUndoContext;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IScopeContext;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ProjectScope;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.GroupMarker;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.IPostSelectionProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.DocumentEvent;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IDocumentExtension4;
import org.eclipse.jface.text.IDocumentListener;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ISelectionValidator;
import org.eclipse.jface.text.ISynchronizable;
import org.eclipse.jface.text.ITextHover;
import org.eclipse.jface.text.ITextInputListener;
import org.eclipse.jface.text.ITextOperationTarget;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.ITextViewerExtension2;
import org.eclipse.jface.text.ITextViewerExtension5;
import org.eclipse.jface.text.ITypedRegion;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.TextSelection;
import org.eclipse.jface.text.TextUtilities;
import org.eclipse.jface.text.codemining.ICodeMiningProvider;
import org.eclipse.jface.text.link.LinkedModeModel;
import org.eclipse.jface.text.link.LinkedPosition;
import org.eclipse.jface.text.reconciler.IReconciler;
import org.eclipse.jface.text.source.Annotation;
import org.eclipse.jface.text.source.AnnotationRulerColumn;
import org.eclipse.jface.text.source.CompositeRuler;
import org.eclipse.jface.text.source.IAnnotationModel;
import org.eclipse.jface.text.source.IAnnotationModelExtension;
import org.eclipse.jface.text.source.IAnnotationModelExtension2;
import org.eclipse.jface.text.source.ICharacterPairMatcher;
import org.eclipse.jface.text.source.IOverviewRuler;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.ISourceViewerExtension2;
import org.eclipse.jface.text.source.ISourceViewerExtension5;
import org.eclipse.jface.text.source.IVerticalRuler;
import org.eclipse.jface.text.source.IVerticalRulerColumn;
import org.eclipse.jface.text.source.LineChangeHover;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.jface.text.source.projection.ProjectionSupport;
import org.eclipse.jface.text.source.projection.ProjectionViewer;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IPageLayout;
import org.eclipse.ui.IPartListener2;
import org.eclipse.ui.IPartService;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWindowListener;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartReference;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionContext;
import org.eclipse.ui.actions.ActionGroup;
import org.eclipse.ui.operations.NonLocalUndoUserApprover;
import org.eclipse.ui.part.IShowInSource;
import org.eclipse.ui.part.IShowInTargetList;
import org.eclipse.ui.part.ShowInContext;
import org.eclipse.ui.views.contentoutline.ContentOutline;
import org.eclipse.ui.views.contentoutline.IContentOutlinePage;
import org.eclipse.ui.texteditor.AbstractDecoratedTextEditor;
import org.eclipse.ui.texteditor.AbstractDecoratedTextEditorPreferenceConstants;
import org.eclipse.ui.texteditor.AbstractTextEditor;
import org.eclipse.ui.texteditor.AnnotationPreference;
import org.eclipse.ui.texteditor.ChainedPreferenceStore;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditorActionConstants;
import org.eclipse.ui.texteditor.ITextEditorActionDefinitionIds;
import org.eclipse.ui.texteditor.IUpdate;
import org.eclipse.ui.texteditor.MarkerAnnotation;
import org.eclipse.ui.texteditor.MarkerAnnotationPreferences;
import org.eclipse.ui.texteditor.SourceViewerDecorationSupport;
import org.eclipse.ui.texteditor.TextNavigationAction;
import org.eclipse.ui.texteditor.TextOperationAction;
import org.eclipse.ui.editors.text.DefaultEncodingSupport;
import org.eclipse.ui.editors.text.EditorsUI;
import org.eclipse.ui.editors.text.IEncodingSupport;
import org.eclipse.jdt.core.IAnnotation;
import org.eclipse.jdt.core.IClassFile;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IImportContainer;
import org.eclipse.jdt.core.IImportDeclaration;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.ILocalVariable;
import org.eclipse.jdt.core.ISourceRange;
import org.eclipse.jdt.core.ISourceReference;
import org.eclipse.jdt.core.ITypeParameter;
import org.eclipse.jdt.core.ITypeRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.IBinding;
import org.eclipse.jdt.core.dom.IVariableBinding;
import org.eclipse.jdt.core.dom.Name;
import org.eclipse.jdt.core.dom.NodeFinder;
import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants;
import org.eclipse.jdt.core.manipulation.SharedASTProviderCore;
import org.eclipse.jdt.core.util.IModifierConstants;
import org.eclipse.jdt.internal.core.manipulation.search.BreakContinueTargetFinder;
import org.eclipse.jdt.internal.core.manipulation.search.ExceptionOccurrencesFinder;
import org.eclipse.jdt.internal.core.manipulation.search.IOccurrencesFinder;
import org.eclipse.jdt.internal.core.manipulation.search.IOccurrencesFinder.OccurrenceLocation;
import org.eclipse.jdt.internal.core.manipulation.search.ImplementOccurrencesFinder;
import org.eclipse.jdt.internal.core.manipulation.search.MethodExitsFinder;
import org.eclipse.jdt.internal.core.manipulation.search.OccurrencesFinder;
import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
import org.eclipse.jdt.ui.IContextMenuConstants;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jdt.ui.PreferenceConstants;
import org.eclipse.jdt.ui.actions.IJavaEditorActionDefinitionIds;
import org.eclipse.jdt.ui.actions.JavaSearchActionGroup;
import org.eclipse.jdt.ui.actions.OpenEditorActionGroup;
import org.eclipse.jdt.ui.actions.OpenViewActionGroup;
import org.eclipse.jdt.ui.text.IJavaPartitionerManager;
import org.eclipse.jdt.ui.text.IJavaPartitions;
import org.eclipse.jdt.ui.text.JavaSourceViewerConfiguration;
import org.eclipse.jdt.ui.text.JavaTextTools;
import org.eclipse.jdt.ui.text.folding.IJavaFoldingStructureProvider;
import org.eclipse.jdt.ui.text.folding.IJavaFoldingStructureProviderExtension;
import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.JavaPluginImages;
import org.eclipse.jdt.internal.ui.actions.CompositeActionGroup;
import org.eclipse.jdt.internal.ui.actions.CopyQualifiedNameAction;
import org.eclipse.jdt.internal.ui.actions.FoldingActionGroup;
import org.eclipse.jdt.internal.ui.actions.SelectionConverter;
import org.eclipse.jdt.internal.ui.javaeditor.breadcrumb.EditorBreadcrumb;
import org.eclipse.jdt.internal.ui.javaeditor.breadcrumb.IBreadcrumb;
import org.eclipse.jdt.internal.ui.javaeditor.selectionactions.GoToNextPreviousMemberAction;
import org.eclipse.jdt.internal.ui.javaeditor.selectionactions.SelectionHistory;
import org.eclipse.jdt.internal.ui.javaeditor.selectionactions.StructureSelectEnclosingAction;
import org.eclipse.jdt.internal.ui.javaeditor.selectionactions.StructureSelectHistoryAction;
import org.eclipse.jdt.internal.ui.javaeditor.selectionactions.StructureSelectNextAction;
import org.eclipse.jdt.internal.ui.javaeditor.selectionactions.StructureSelectPreviousAction;
import org.eclipse.jdt.internal.ui.javaeditor.selectionactions.StructureSelectionAction;
import org.eclipse.jdt.internal.ui.text.DocumentCharacterIterator;
import org.eclipse.jdt.internal.ui.text.JavaChangeHover;
import org.eclipse.jdt.internal.ui.text.JavaPairMatcher;
import org.eclipse.jdt.internal.ui.text.JavaPartitionerManager;
import org.eclipse.jdt.internal.ui.text.JavaWordFinder;
import org.eclipse.jdt.internal.ui.text.JavaWordIterator;
import org.eclipse.jdt.internal.ui.text.PreferencesAdapter;
import org.eclipse.jdt.internal.ui.text.java.hover.JavaExpandHover;
import org.eclipse.jdt.internal.ui.text.java.hover.SourceViewerInformationControl;
import org.eclipse.jdt.internal.ui.util.ElementValidator;
import org.eclipse.jdt.internal.ui.util.JavaUIHelp;
import org.eclipse.jdt.internal.ui.viewsupport.ISelectionListenerWithAST;
import org.eclipse.jdt.internal.ui.viewsupport.IViewPartInputProvider;
import org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager;
/**
* Java specific text editor.
*/
public abstract class JavaEditor extends AbstractDecoratedTextEditor implements IViewPartInputProvider {
/**
* Internal implementation class for a change listener.
* @since 3.0
*/
protected abstract static class AbstractSelectionChangedListener implements ISelectionChangedListener {
/**
* Installs this selection changed listener with the given selection provider. If
* the selection provider is a post selection provider, post selection changed
* events are the preferred choice, otherwise normal selection changed events
* are requested.
*
* @param selectionProvider the selection provider
*/
public void install(ISelectionProvider selectionProvider) {
if (selectionProvider == null)
return;
if (selectionProvider instanceof IPostSelectionProvider) {
IPostSelectionProvider provider= (IPostSelectionProvider) selectionProvider;
provider.addPostSelectionChangedListener(this);
} else {
selectionProvider.addSelectionChangedListener(this);
}
}
/**
* Removes this selection changed listener from the given selection provider.
*
* @param selectionProvider the selection provider
*/
public void uninstall(ISelectionProvider selectionProvider) {
if (selectionProvider == null)
return;
if (selectionProvider instanceof IPostSelectionProvider) {
IPostSelectionProvider provider= (IPostSelectionProvider) selectionProvider;
provider.removePostSelectionChangedListener(this);
} else {
selectionProvider.removeSelectionChangedListener(this);
}
}
}
/**
* Updates the Java outline page selection and this editor's range indicator.
*
* @since 3.0
*/
private class EditorSelectionChangedListener extends AbstractSelectionChangedListener {
/*
* @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
*/
@Override
public void selectionChanged(SelectionChangedEvent event) {
// XXX: see https://bugs.eclipse.org/bugs/show_bug.cgi?id=56161
JavaEditor.this.selectionChanged();
}
}
/**
* Adapts an options {@link IEclipsePreferences} to {@link org.eclipse.jface.preference.IPreferenceStore}.
* <p>
* This preference store is read-only i.e. write access
* throws an {@link java.lang.UnsupportedOperationException}.
* </p>
*
* @since 3.1
*/
private static class EclipsePreferencesAdapter implements IPreferenceStore {
/**
* Preference change listener. Listens for events preferences
* fires a {@link org.eclipse.jface.util.PropertyChangeEvent}
* on this adapter with arguments from the received event.
*/
private class PreferenceChangeListener implements IEclipsePreferences.IPreferenceChangeListener {
@Override
public void preferenceChange(final IEclipsePreferences.PreferenceChangeEvent event) {
if (Display.getCurrent() == null) {
Display.getDefault().asyncExec(() -> firePropertyChangeEvent(event.getKey(), event.getOldValue(), event.getNewValue()));
} else {
firePropertyChangeEvent(event.getKey(), event.getOldValue(), event.getNewValue());
}
}
}
/** Listeners on on this adapter */
private ListenerList<IPropertyChangeListener> fListeners= new ListenerList<>(ListenerList.IDENTITY);
/** Listener on the node */
private IEclipsePreferences.IPreferenceChangeListener fListener= new PreferenceChangeListener();
/** wrapped node */
private final IScopeContext fContext;
private final String fQualifier;
/**
* Initialize with the node to wrap
*
* @param context the context to access
* @param qualifier the qualifier
*/
public EclipsePreferencesAdapter(IScopeContext context, String qualifier) {
fContext= context;
fQualifier= qualifier;
}
private IEclipsePreferences getNode() {
return fContext.getNode(fQualifier);
}
@Override
public void addPropertyChangeListener(IPropertyChangeListener listener) {
if (fListeners.size() == 0)
getNode().addPreferenceChangeListener(fListener);
fListeners.add(listener);
}
@Override
public void removePropertyChangeListener(IPropertyChangeListener listener) {
fListeners.remove(listener);
if (fListeners.size() == 0) {
getNode().removePreferenceChangeListener(fListener);
}
}
@Override
public boolean contains(String name) {
return getNode().get(name, null) != null;
}
@Override
public void firePropertyChangeEvent(String name, Object oldValue, Object newValue) {
PropertyChangeEvent event= new PropertyChangeEvent(this, name, oldValue, newValue);
for (IPropertyChangeListener listener : fListeners) {
listener.propertyChange(event);
}
}
@Override
public boolean getBoolean(String name) {
return getNode().getBoolean(name, BOOLEAN_DEFAULT_DEFAULT);
}
@Override
public boolean getDefaultBoolean(String name) {
return BOOLEAN_DEFAULT_DEFAULT;
}
@Override
public double getDefaultDouble(String name) {
return DOUBLE_DEFAULT_DEFAULT;
}
@Override
public float getDefaultFloat(String name) {
return FLOAT_DEFAULT_DEFAULT;
}
@Override
public int getDefaultInt(String name) {
return INT_DEFAULT_DEFAULT;
}
@Override
public long getDefaultLong(String name) {
return LONG_DEFAULT_DEFAULT;
}
@Override
public String getDefaultString(String name) {
return STRING_DEFAULT_DEFAULT;
}
@Override
public double getDouble(String name) {
return getNode().getDouble(name, DOUBLE_DEFAULT_DEFAULT);
}
@Override
public float getFloat(String name) {
return getNode().getFloat(name, FLOAT_DEFAULT_DEFAULT);
}
@Override
public int getInt(String name) {
return getNode().getInt(name, INT_DEFAULT_DEFAULT);
}
@Override
public long getLong(String name) {
return getNode().getLong(name, LONG_DEFAULT_DEFAULT);
}
@Override
public String getString(String name) {
return getNode().get(name, STRING_DEFAULT_DEFAULT);
}
@Override
public boolean isDefault(String name) {
return false;
}
@Override
public boolean needsSaving() {
try {
return getNode().keys().length > 0;
} catch (BackingStoreException e) {
// ignore
}
return true;
}
@Override
public void putValue(String name, String value) {
throw new UnsupportedOperationException();
}
@Override
public void setDefault(String name, double value) {
throw new UnsupportedOperationException();
}
@Override
public void setDefault(String name, float value) {
throw new UnsupportedOperationException();
}
@Override
public void setDefault(String name, int value) {
throw new UnsupportedOperationException();
}
@Override
public void setDefault(String name, long value) {
throw new UnsupportedOperationException();
}
@Override
public void setDefault(String name, String defaultObject) {
throw new UnsupportedOperationException();
}
@Override
public void setDefault(String name, boolean value) {
throw new UnsupportedOperationException();
}
@Override
public void setToDefault(String name) {
throw new UnsupportedOperationException();
}
@Override
public void setValue(String name, double value) {
throw new UnsupportedOperationException();
}
@Override
public void setValue(String name, float value) {
throw new UnsupportedOperationException();
}
@Override
public void setValue(String name, int value) {
throw new UnsupportedOperationException();
}
@Override
public void setValue(String name, long value) {
throw new UnsupportedOperationException();
}
@Override
public void setValue(String name, String value) {
throw new UnsupportedOperationException();
}
@Override
public void setValue(String name, boolean value) {
throw new UnsupportedOperationException();
}
}
/**
* Cancels the occurrences finder job upon document changes.
*
* @since 3.0
*/
class OccurrencesFinderJobCanceler implements IDocumentListener, ITextInputListener {
public void install() {
ISourceViewer sourceViewer= getSourceViewer();
if (sourceViewer == null)
return;
StyledText text= sourceViewer.getTextWidget();
if (text == null || text.isDisposed())
return;
sourceViewer.addTextInputListener(this);
IDocument document= sourceViewer.getDocument();
if (document != null)
document.addDocumentListener(this);
}
public void uninstall() {
ISourceViewer sourceViewer= getSourceViewer();
if (sourceViewer != null)
sourceViewer.removeTextInputListener(this);
IDocumentProvider documentProvider= getDocumentProvider();
if (documentProvider != null) {
IDocument document= documentProvider.getDocument(getEditorInput());
if (document != null)
document.removeDocumentListener(this);
}
}
/*
* @see org.eclipse.jface.text.IDocumentListener#documentAboutToBeChanged(org.eclipse.jface.text.DocumentEvent)
*/
@Override
public void documentAboutToBeChanged(DocumentEvent event) {
if (fOccurrencesFinderJob != null)
fOccurrencesFinderJob.doCancel();
}
/*
* @see org.eclipse.jface.text.IDocumentListener#documentChanged(org.eclipse.jface.text.DocumentEvent)
*/
@Override
public void documentChanged(DocumentEvent event) {
}
/*
* @see org.eclipse.jface.text.ITextInputListener#inputDocumentAboutToBeChanged(org.eclipse.jface.text.IDocument, org.eclipse.jface.text.IDocument)
*/
@Override
public void inputDocumentAboutToBeChanged(IDocument oldInput, IDocument newInput) {
if (oldInput == null)
return;
oldInput.removeDocumentListener(this);
}
/*
* @see org.eclipse.jface.text.ITextInputListener#inputDocumentChanged(org.eclipse.jface.text.IDocument, org.eclipse.jface.text.IDocument)
*/
@Override
public void inputDocumentChanged(IDocument oldInput, IDocument newInput) {
if (newInput == null)
return;
newInput.addDocumentListener(this);
}
}
/**
* This action implements smart home.
*
* Instead of going to the start of a line it does the following:
*
* - if smart home/end is enabled and the caret is after the line's first non-whitespace then the caret is moved directly before it, taking JavaDoc and multi-line comments into account.
* - if the caret is before the line's first non-whitespace the caret is moved to the beginning of the line
* - if the caret is at the beginning of the line see first case.
*
* @since 3.0
*/
protected class SmartLineStartAction extends LineStartAction {
/**
* Creates a new smart line start action
*
* @param textWidget the styled text widget
* @param doSelect a boolean flag which tells if the text up to the beginning of the line should be selected
*/
public SmartLineStartAction(final StyledText textWidget, final boolean doSelect) {
super(textWidget, doSelect);
}
/*
* @see org.eclipse.ui.texteditor.AbstractTextEditor.LineStartAction#getLineStartPosition(java.lang.String, int, java.lang.String)
*/
@Override
protected int getLineStartPosition(final IDocument document, final String line, final int length, final int offset) {
String type= IDocument.DEFAULT_CONTENT_TYPE;
try {
type= TextUtilities.getContentType(document, IJavaPartitions.JAVA_PARTITIONING, offset, true);
} catch (BadLocationException exception) {
// Should not happen
}
int index= super.getLineStartPosition(document, line, length, offset);
if (IJavaPartitions.JAVA_DOC.equals(type) || IJavaPartitions.JAVA_MULTI_LINE_COMMENT.equals(type)) {
if (index < length - 1 && line.charAt(index) == '*' && line.charAt(index + 1) != '/') {
do {
++index;
} while (index < length && Character.isWhitespace(line.charAt(index)));
}
} else {
if (index < length - 1 && line.charAt(index) == '/' && line.charAt(index + 1) == '/') {
index++;
do {
++index;
} while (index < length && Character.isWhitespace(line.charAt(index)));
}
}
return index;
}
}
/**
* Text navigation action to navigate to the next sub-word.
*
* @since 3.0
*/
protected abstract class NextSubWordAction extends TextNavigationAction {
protected JavaWordIterator fIterator= new JavaWordIterator();
/**
* Creates a new next sub-word action.
*
* @param code Action code for the default operation. Must be an action code from @see org.eclipse.swt.custom.ST.
*/
protected NextSubWordAction(int code) {
super(getSourceViewer().getTextWidget(), code);
}
/*
* @see org.eclipse.jface.action.IAction#run()
*/
@Override
public void run() {
// Check whether we are in a java code partition and the preference is enabled
final IPreferenceStore store= getPreferenceStore();
if (!store.getBoolean(PreferenceConstants.EDITOR_SUB_WORD_NAVIGATION)) {
super.run();
return;
}
final ISourceViewer viewer= getSourceViewer();
final IDocument document= viewer.getDocument();
try {
fIterator.setText((CharacterIterator)new DocumentCharacterIterator(document));
int position= widgetOffset2ModelOffset(viewer, viewer.getTextWidget().getCaretOffset());
if (position == -1)
return;
int next= findNextPosition(position);
if (isBlockSelectionModeEnabled() && document.getLineOfOffset(next) != document.getLineOfOffset(position)) {
super.run(); // may navigate into virtual white space
} else if (next != BreakIterator.DONE) {
setCaretPosition(next);
getTextWidget().showSelection();
fireSelectionChanged();
}
} catch (BadLocationException x) {
// ignore
}
}
/**
* Finds the next position after the given position.
*
* @param position the current position
* @return the next position
*/
protected int findNextPosition(int position) {
ISourceViewer viewer= getSourceViewer();
int widget= -1;
int next= position;
while (next != BreakIterator.DONE && widget == -1) { // XXX: optimize
next= fIterator.following(next);
if (next != BreakIterator.DONE)
widget= modelOffset2WidgetOffset(viewer, next);
}
IDocument document= viewer.getDocument();
LinkedModeModel model= LinkedModeModel.getModel(document, position);
if (model != null && next != BreakIterator.DONE) {
LinkedPosition linkedPosition= model.findPosition(new LinkedPosition(document, position, 0));
if (linkedPosition != null) {
int linkedPositionEnd= linkedPosition.getOffset() + linkedPosition.getLength();
if (position != linkedPositionEnd && linkedPositionEnd < next)
next= linkedPositionEnd;
} else {
LinkedPosition nextLinkedPosition= model.findPosition(new LinkedPosition(document, next, 0));
if (nextLinkedPosition != null) {
int nextLinkedPositionOffset= nextLinkedPosition.getOffset();
if (position != nextLinkedPositionOffset && nextLinkedPositionOffset < next)
next= nextLinkedPositionOffset;
}
}
}
return next;
}
/**
* Sets the caret position to the sub-word boundary given with <code>position</code>.
*
* @param position Position where the action should move the caret
*/
protected abstract void setCaretPosition(int position);
}
/**
* Text navigation action to navigate to the next sub-word.
*
* @since 3.0
*/
protected class NavigateNextSubWordAction extends NextSubWordAction {
/**
* Creates a new navigate next sub-word action.
*/
public NavigateNextSubWordAction() {
super(ST.WORD_NEXT);
}
/*
* @see org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.NextSubWordAction#setCaretPosition(int)
*/
@Override
protected void setCaretPosition(final int position) {
getTextWidget().setCaretOffset(modelOffset2WidgetOffset(getSourceViewer(), position));
}
}
/**
* Text operation action to delete the next sub-word.
*
* @since 3.0
*/
protected class DeleteNextSubWordAction extends NextSubWordAction implements IUpdate {
/**
* Creates a new delete next sub-word action.
*/
public DeleteNextSubWordAction() {
super(ST.DELETE_WORD_NEXT);
}
/*
* @see org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.NextSubWordAction#setCaretPosition(int)
*/
@Override
protected void setCaretPosition(final int position) {
if (!validateEditorInputState())
return;
final ISourceViewer viewer= getSourceViewer();
StyledText text= viewer.getTextWidget();
Point widgetSelection= text.getSelection();
if (isBlockSelectionModeEnabled() && widgetSelection.y != widgetSelection.x) {
final int caret= text.getCaretOffset();
final int offset= modelOffset2WidgetOffset(viewer, position);
if (caret == widgetSelection.x)
text.setSelectionRange(widgetSelection.y, offset - widgetSelection.y);
else
text.setSelectionRange(widgetSelection.x, offset - widgetSelection.x);
text.invokeAction(ST.DELETE_NEXT);
} else {
Point selection= viewer.getSelectedRange();
final int caret, length;
if (selection.y != 0) {
caret= selection.x;
length= selection.y;
} else {
caret= widgetOffset2ModelOffset(viewer, text.getCaretOffset());
length= position - caret;
}
try {
viewer.getDocument().replace(caret, length, ""); //$NON-NLS-1$
} catch (BadLocationException exception) {
// Should not happen
}
}
}
/*
* @see org.eclipse.ui.texteditor.IUpdate#update()
*/
@Override
public void update() {
setEnabled(isEditorInputModifiable());
}
}
/**
* Text operation action to select the next sub-word.
*
* @since 3.0
*/
protected class SelectNextSubWordAction extends NextSubWordAction {
/**
* Creates a new select next sub-word action.
*/
public SelectNextSubWordAction() {
super(ST.SELECT_WORD_NEXT);
}
/*
* @see org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.NextSubWordAction#setCaretPosition(int)
*/
@Override
protected void setCaretPosition(final int position) {
final ISourceViewer viewer= getSourceViewer();
final StyledText text= viewer.getTextWidget();
if (text != null && !text.isDisposed()) {
final Point selection= text.getSelection();
final int caret= text.getCaretOffset();
final int offset= modelOffset2WidgetOffset(viewer, position);
if (caret == selection.x)
text.setSelectionRange(selection.y, offset - selection.y);
else
text.setSelectionRange(selection.x, offset - selection.x);
}
}
}
/**
* Text navigation action to navigate to the previous sub-word.
*
* @since 3.0
*/
protected abstract class PreviousSubWordAction extends TextNavigationAction {
protected JavaWordIterator fIterator= new JavaWordIterator();
/**
* Creates a new previous sub-word action.
*
* @param code Action code for the default operation. Must be an action code from @see org.eclipse.swt.custom.ST.
*/
protected PreviousSubWordAction(final int code) {
super(getSourceViewer().getTextWidget(), code);
}
/*
* @see org.eclipse.jface.action.IAction#run()
*/
@Override
public void run() {
// Check whether we are in a java code partition and the preference is enabled
final IPreferenceStore store= getPreferenceStore();
if (!store.getBoolean(PreferenceConstants.EDITOR_SUB_WORD_NAVIGATION)) {
super.run();
return;
}
final ISourceViewer viewer= getSourceViewer();
final IDocument document= viewer.getDocument();
try {
fIterator.setText((CharacterIterator)new DocumentCharacterIterator(document));
int position= widgetOffset2ModelOffset(viewer, viewer.getTextWidget().getCaretOffset());
if (position == -1)
return;
int previous= findPreviousPosition(position);
if (isBlockSelectionModeEnabled() && document.getLineOfOffset(previous) != document.getLineOfOffset(position)) {
super.run(); // may navigate into virtual white space
} else if (previous != BreakIterator.DONE) {
setCaretPosition(previous);
getTextWidget().showSelection();
fireSelectionChanged();
}
} catch (BadLocationException x) {
// ignore - getLineOfOffset failed
}
}
/**
* Finds the previous position before the given position.
*
* @param position the current position
* @return the previous position
*/
protected int findPreviousPosition(int position) {
ISourceViewer viewer= getSourceViewer();
int widget= -1;
int previous= position;
while (previous != BreakIterator.DONE && widget == -1) { // XXX: optimize
previous= fIterator.preceding(previous);
if (previous != BreakIterator.DONE)
widget= modelOffset2WidgetOffset(viewer, previous);
}
IDocument document= viewer.getDocument();
LinkedModeModel model= LinkedModeModel.getModel(document, position);
if (model != null && previous != BreakIterator.DONE) {
LinkedPosition linkedPosition= model.findPosition(new LinkedPosition(document, position, 0));
if (linkedPosition != null) {
int linkedPositionOffset= linkedPosition.getOffset();
if (position != linkedPositionOffset && previous < linkedPositionOffset)
previous= linkedPositionOffset;
} else {
LinkedPosition previousLinkedPosition= model.findPosition(new LinkedPosition(document, previous, 0));
if (previousLinkedPosition != null) {
int previousLinkedPositionEnd= previousLinkedPosition.getOffset() + previousLinkedPosition.getLength();
if (position != previousLinkedPositionEnd && previous < previousLinkedPositionEnd)
previous= previousLinkedPositionEnd;
}
}
}
return previous;
}
/**
* Sets the caret position to the sub-word boundary given with <code>position</code>.
*
* @param position Position where the action should move the caret
*/
protected abstract void setCaretPosition(int position);
}
/**
* Text navigation action to navigate to the previous sub-word.
*
* @since 3.0
*/
protected class NavigatePreviousSubWordAction extends PreviousSubWordAction {
/**
* Creates a new navigate previous sub-word action.
*/
public NavigatePreviousSubWordAction() {
super(ST.WORD_PREVIOUS);
}