--- /dev/null
+package net.sourceforge.phpeclipse.phpeditor;
+
+/**********************************************************************
+Copyright (c) 2000, 2002 IBM Corp. 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 implementation
+ Klaus Hartlage - www.eclipseproject.de
+**********************************************************************/
+
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+
+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.Position;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.LabelProvider;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.jface.viewers.TreeViewer;
+import org.eclipse.jface.viewers.Viewer;
+
+import org.eclipse.ui.texteditor.IDocumentProvider;
+import org.eclipse.ui.texteditor.ITextEditor;
+import org.eclipse.ui.views.contentoutline.ContentOutlinePage;
+
+/**
+ * A content outline page which always represents the content of the
+ * connected editor in 10 segments.
+ */
+public class PHPContentOutlinePage extends ContentOutlinePage {
+
+ /**
+ * A segment element.
+ */
+ protected static class Segment {
+ public String name;
+ public Position position;
+
+ public Segment(String name, Position position) {
+ this.name= name;
+ this.position= position;
+ }
+
+ public String toString() {
+ return name;
+ }
+ };
+
+ /**
+ * Divides the editor's document into ten segments and provides elements for them.
+ */
+ protected class ContentProvider implements ITreeContentProvider {
+
+ protected final static String SEGMENTS= "__java_segments"; //$NON-NLS-1$
+ protected IPositionUpdater fPositionUpdater= new DefaultPositionUpdater(SEGMENTS);
+ protected List fContent= new ArrayList(10);
+
+ protected void parse(IDocument document) {
+
+ int lines= document.getNumberOfLines();
+ int increment= Math.max(Math.round((float) (lines / 10)), 10);
+
+ for (int line= 0; line < lines; line += increment) {
+
+ int length= increment;
+ if (line + increment > lines)
+ length= lines - line;
+
+ try {
+
+ int offset= document.getLineOffset(line);
+ int end= document.getLineOffset(line + length);
+ length= end - offset;
+ Position p= new Position(offset, length);
+ document.addPosition(SEGMENTS, p);
+ fContent.add(new Segment(MessageFormat.format(PHPEditorMessages.getString("OutlinePage.segment.title_pattern"), new Object[] { new Integer(offset) }), p)); //$NON-NLS-1$
+
+ } catch (BadPositionCategoryException x) {
+ } catch (BadLocationException x) {
+ }
+ }
+ }
+
+ /*
+ * @see IContentProvider#inputChanged(Viewer, Object, Object)
+ */
+ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+ if (oldInput != null) {
+ IDocument document= fDocumentProvider.getDocument(oldInput);
+ if (document != null) {
+ try {
+ document.removePositionCategory(SEGMENTS);
+ } catch (BadPositionCategoryException x) {
+ }
+ document.removePositionUpdater(fPositionUpdater);
+ }
+ }
+
+ fContent.clear();
+
+ if (newInput != null) {
+ IDocument document= fDocumentProvider.getDocument(newInput);
+ if (document != null) {
+ document.addPositionCategory(SEGMENTS);
+ document.addPositionUpdater(fPositionUpdater);
+
+ parse(document);
+ }
+ }
+ }
+
+ /*
+ * @see IContentProvider#dispose
+ */
+ public void dispose() {
+ if (fContent != null) {
+ fContent.clear();
+ fContent= null;
+ }
+ }
+
+ /*
+ * @see IContentProvider#isDeleted(Object)
+ */
+ public boolean isDeleted(Object element) {
+ return false;
+ }
+
+ /*
+ * @see IStructuredContentProvider#getElements(Object)
+ */
+ public Object[] getElements(Object element) {
+ return fContent.toArray();
+ }
+
+ /*
+ * @see ITreeContentProvider#hasChildren(Object)
+ */
+ public boolean hasChildren(Object element) {
+ return element == fInput;
+ }
+
+ /*
+ * @see ITreeContentProvider#getParent(Object)
+ */
+ public Object getParent(Object element) {
+ if (element instanceof Segment)
+ return fInput;
+ return null;
+ }
+
+ /*
+ * @see ITreeContentProvider#getChildren(Object)
+ */
+ public Object[] getChildren(Object element) {
+ if (element == fInput)
+ return fContent.toArray();
+ return new Object[0];
+ }
+ };
+
+ protected Object fInput;
+ protected IDocumentProvider fDocumentProvider;
+ protected ITextEditor fTextEditor;
+
+ /**
+ * Creates a content outline page using the given provider and the given editor.
+ */
+ public PHPContentOutlinePage(IDocumentProvider provider, ITextEditor editor) {
+ super();
+ fDocumentProvider= provider;
+ fTextEditor= editor;
+ }
+
+ /* (non-Javadoc)
+ * Method declared on ContentOutlinePage
+ */
+ public void createControl(Composite parent) {
+
+ super.createControl(parent);
+
+ TreeViewer viewer= getTreeViewer();
+ viewer.setContentProvider(new ContentProvider());
+ viewer.setLabelProvider(new LabelProvider());
+ viewer.addSelectionChangedListener(this);
+
+ if (fInput != null)
+ viewer.setInput(fInput);
+ }
+
+ /* (non-Javadoc)
+ * Method declared on ContentOutlinePage
+ */
+ public void selectionChanged(SelectionChangedEvent event) {
+
+ super.selectionChanged(event);
+
+ ISelection selection= event.getSelection();
+ if (selection.isEmpty())
+ fTextEditor.resetHighlightRange();
+ else {
+ Segment segment= (Segment) ((IStructuredSelection) selection).getFirstElement();
+ int start= segment.position.getOffset();
+ int length= segment.position.getLength();
+ try {
+ fTextEditor.setHighlightRange(start, length, true);
+ } catch (IllegalArgumentException x) {
+ fTextEditor.resetHighlightRange();
+ }
+ }
+ }
+
+ /**
+ * Sets the input of the outline page
+ */
+ public void setInput(Object input) {
+ fInput= input;
+ update();
+ }
+
+ /**
+ * Updates the outline page.
+ */
+ public void update() {
+ TreeViewer viewer= getTreeViewer();
+
+ if (viewer != null) {
+ Control control= viewer.getControl();
+ if (control != null && !control.isDisposed()) {
+ control.setRedraw(false);
+ viewer.setInput(fInput);
+ viewer.expandAll();
+ control.setRedraw(true);
+ }
+ }
+ }
+}
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