| /******************************************************************************* |
| * Copyright (c) 2008, 2010 Chase Technology Ltd - http://www.chasetechnology.co.uk |
| * 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: |
| * Doug Satchwell (Chase Technology Ltd) - initial API and implementation |
| * David Carver (STAR) - bug 261588 - Add Edit Namespace support for XPath view |
| * David Carver (Intalio) - bug 246110 - Clean up XPath UI. |
| * David Carver (Intalio) - bug 271288 - Set ContextNode for XPath Evaluation |
| * Jesper Steen Moller - bug 313992 - XPath evaluation does not show atomics |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.xpath.ui.internal.views; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.xml.xpath.XPathExpressionException; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.action.IMenuListener; |
| import org.eclipse.jface.action.IMenuManager; |
| import org.eclipse.jface.action.IToolBarManager; |
| import org.eclipse.jface.action.MenuManager; |
| import org.eclipse.jface.resource.JFaceColors; |
| import org.eclipse.jface.util.SafeRunnable; |
| 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.IStructuredSelection; |
| import org.eclipse.jface.viewers.SelectionChangedEvent; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.custom.CTabFolder; |
| import org.eclipse.swt.custom.CTabItem; |
| import org.eclipse.swt.events.ModifyEvent; |
| import org.eclipse.swt.events.ModifyListener; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.layout.GridLayout; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Label; |
| import org.eclipse.swt.widgets.Menu; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Text; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.IPartListener2; |
| import org.eclipse.ui.ISelectionListener; |
| import org.eclipse.ui.IViewSite; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.IWorkbenchPartReference; |
| import org.eclipse.ui.PartInitException; |
| import org.eclipse.ui.part.IShowInSource; |
| import org.eclipse.ui.part.IShowInTarget; |
| import org.eclipse.ui.part.IShowInTargetList; |
| import org.eclipse.ui.part.ShowInContext; |
| import org.eclipse.ui.part.ViewPart; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; |
| import org.eclipse.wst.xml.xpath.core.util.XSLTXPathHelper; |
| import org.eclipse.wst.xml.xpath.ui.internal.Messages; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| public class XPathView extends ViewPart { |
| |
| private boolean isFiringSelection = false; |
| private IPartListener2 partListener2 = new XPathPartListener(); |
| private ISelectionListener selectionListener = new ISelectionListener() { |
| public void selectionChanged(IWorkbenchPart part, ISelection selection) { |
| if (part == getSite().getPage().getActiveEditor()) { |
| if (selection instanceof IStructuredSelection) { |
| currentSelection = (IStructuredSelection) selection; |
| if (!selection.isEmpty() |
| && (currentSelection.getFirstElement() instanceof Node)) { |
| recalculateLocation((Node) currentSelection |
| .getFirstElement()); |
| boolean isLinked = xpathViewActions |
| .isLinkedWithEditor(treeViewer); |
| if (isLinked) { |
| treeViewer.setSelection(currentSelection, true); |
| } |
| } else { |
| recalculateLocation(null); |
| } |
| } |
| } |
| } |
| }; |
| private TreeViewer treeViewer; |
| private IEditorPart activeEditor; |
| private Text text; |
| // private JFaceNodeContentProviderXPath contentProvider; |
| private XPathComputer xpathComputer; |
| private Text locationText; |
| private XPathViewActions xpathViewActions = new XPathViewActions(); |
| private IPostSelectionProvider selectionProvider = new SelectionProvider(); |
| private String location = ""; //$NON-NLS-1$ |
| private String message; |
| private boolean expressionValid = true; |
| private Integer currentSheet = Integer.valueOf(0); |
| private Map<Integer, String> sheetMap; |
| private IStructuredSelection currentSelection; |
| private Node contextNode = null; |
| |
| public void createPartControl(Composite parent) { |
| Composite parentComp = new Composite(parent, SWT.NONE); |
| GridLayout gl = new GridLayout(1, false); |
| gl.horizontalSpacing = 0; |
| gl.verticalSpacing = 0; |
| gl.marginHeight = 0; |
| gl.marginWidth = 0; |
| parentComp.setLayout(gl); |
| GridData gd = new GridData(SWT.FILL, SWT.NONE, true, false, 2, 1); |
| parentComp.setLayoutData(gd); |
| |
| Composite comp = new Composite(parentComp, SWT.NONE); |
| comp.setLayout(new GridLayout(1, false)); |
| comp.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false)); |
| |
| Label label = new Label(comp, SWT.NONE); |
| label.setText(Messages.XPathView_1); |
| |
| this.text = new Text(comp, SWT.BORDER); |
| |
| gd = new GridData(SWT.FILL, SWT.NONE, true, false); |
| text.setLayoutData(gd); |
| text.addModifyListener(new ModifyListener() { |
| public void modifyText(ModifyEvent e) { |
| recomputeXPath(); |
| } |
| }); |
| |
| this.locationText = new Text(comp, SWT.READ_ONLY | SWT.FULL_SELECTION); |
| gd = new GridData(SWT.FILL, SWT.NONE, true, false); |
| locationText.setLayoutData(gd); |
| |
| this.treeViewer = new TreeViewer(parentComp, SWT.NONE); |
| gd = new GridData(SWT.FILL, SWT.FILL, true, true); |
| gd.horizontalSpan = 2; |
| treeViewer.getControl().setLayoutData(gd); |
| treeViewer.setLabelProvider(new JFaceNodeLabelProviderXPath()); |
| treeViewer.setContentProvider(new JFaceNodeContentProviderXPath()); |
| treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { |
| |
| public void selectionChanged(SelectionChangedEvent event) { |
| if (getSite().getPage().getActivePart() == XPathView.this) { |
| handleTreeSelection((IStructuredSelection) event |
| .getSelection(), false); |
| } |
| } |
| }); |
| treeViewer.addDoubleClickListener(new IDoubleClickListener() { |
| |
| public void doubleClick(DoubleClickEvent event) { |
| handleTreeSelection( |
| (IStructuredSelection) event.getSelection(), true); |
| } |
| |
| }); |
| |
| final CTabFolder folder = new CTabFolder(parentComp, SWT.BOTTOM |
| | SWT.FLAT); |
| gd = new GridData(SWT.FILL, SWT.NONE, true, false); |
| gd.heightHint = 0; |
| folder.setLayoutData(gd); |
| folder.addSelectionListener(new SelectionAdapter() { |
| public void widgetSelected(SelectionEvent e) { |
| CTabItem item = (CTabItem) e.item; |
| sheetMap.put(currentSheet, text.getText()); |
| pageChange(folder.indexOf(item)); |
| } |
| }); |
| |
| for (int i = 0; i < 5; i++) { |
| CTabItem item = new CTabItem(folder, SWT.NONE, i); |
| // item.setControl(comp); |
| item.setText(Messages.XPathView_2 + (i + 1)); |
| } |
| folder.setSelection(currentSheet); |
| pageChange(currentSheet); |
| |
| this.xpathComputer = new XPathComputer(this); |
| createMenu(); |
| createToolbar(); |
| createContextMenu(); |
| |
| getSite().setSelectionProvider(selectionProvider); |
| |
| initEditorListener(); |
| } |
| |
| private void handleTreeSelection(IStructuredSelection selection, |
| boolean reveal) { |
| if (activeEditor != null) { |
| isFiringSelection = true; |
| if (selection.getFirstElement() != null) { |
| Object element = selection.getFirstElement(); |
| if (element instanceof IDOMNode) { |
| IDOMNode node = (IDOMNode) element; |
| ITextEditor textEditor = (ITextEditor) activeEditor |
| .getAdapter(ITextEditor.class); |
| |
| if (textEditor != null) { |
| getSite().getWorkbenchWindow().getActivePage() |
| .bringToTop(textEditor); |
| if (reveal) { |
| textEditor |
| .selectAndReveal(node.getStartOffset(), |
| node.getEndOffset() |
| - node.getStartOffset()); |
| } else { |
| textEditor.setHighlightRange(node.getStartOffset(), |
| 0, true); |
| } |
| } |
| } |
| } |
| isFiringSelection = false; |
| } |
| } |
| |
| private void createContextMenu() { |
| MenuManager menuMgr = new MenuManager("#PopupMenu"); //$NON-NLS-1$ |
| menuMgr.setRemoveAllWhenShown(true); |
| menuMgr.addMenuListener(new IMenuListener() { |
| public void menuAboutToShow(IMenuManager manager) { |
| xpathViewActions.fillContextMenu(manager); |
| } |
| }); |
| Menu menu = menuMgr.createContextMenu(treeViewer.getControl()); |
| treeViewer.getControl().setMenu(menu); |
| getSite().registerContextMenu(menuMgr, treeViewer); |
| } |
| |
| private void pageChange(int index) { |
| currentSheet = index; |
| String exp = sheetMap.get(index); |
| if (exp != null) { |
| text.setText(exp); |
| } else { |
| text.setText("/"); //$NON-NLS-1$ |
| } |
| } |
| |
| private void createMenu() { |
| IMenuManager mgr = getViewSite().getActionBars().getMenuManager(); |
| IAction[] items = xpathViewActions.createMenuContributions(treeViewer); |
| for (int i = 0; i < items.length; i++) { |
| IAction item = items[i]; |
| mgr.add(item); |
| } |
| } |
| |
| private void createToolbar() { |
| IToolBarManager mgr = getViewSite().getActionBars().getToolBarManager(); |
| IAction[] items = xpathViewActions |
| .createToolbarContributions(treeViewer); |
| for (int i = 0; i < items.length; i++) { |
| IAction item = items[i]; |
| mgr.add(item); |
| } |
| } |
| |
| private void recalculateLocation(Node selected) { |
| this.location = XSLTXPathHelper.calculateXPathToNode(selected); |
| contextNode = selected; |
| updateLocationText(); |
| } |
| |
| private void recomputeXPath() { |
| if (activeEditor != null) { |
| boolean valid = expressionValid; |
| try { |
| if (contextNode != null) { |
| xpathComputer.setSelectedNode(contextNode); |
| } |
| xpathComputer.setText(text.getText()); |
| xpathComputer.compute(); |
| valid = true; |
| } catch (XPathExpressionException e) { |
| valid = false; |
| if (e.getCause() != null) { |
| message = e.getCause().getMessage(); |
| } else { |
| message = "Invalid XPath expression"; //$NON-NLS-1$ |
| } |
| } |
| if (expressionValid != valid) { |
| expressionValid = valid; |
| updateLocationText(); |
| } |
| } |
| } |
| |
| protected void xpathRecomputed(final NodeList nodeList) { |
| if (getSite() == null) return; |
| Shell shell = getSite().getShell(); |
| if (shell == null) return; |
| Display display = shell.getDisplay(); |
| if (display == null) return; |
| display.asyncExec(new Runnable() { |
| public void run() { |
| Control refreshControl = treeViewer.getControl(); |
| if ((refreshControl != null) && !refreshControl.isDisposed()) { |
| refreshControl.setRedraw(false); |
| treeViewer.setInput(nodeList); |
| treeViewer.setSelection(currentSelection, true); |
| refreshControl.setRedraw(true); |
| } |
| } |
| }); |
| } |
| |
| private void updateLocationText() { |
| if (expressionValid) { |
| locationText.setText(Messages.XPathView_0 + location); |
| locationText.setForeground(null); |
| } else { |
| locationText.setText(message); |
| locationText.setForeground(JFaceColors.getErrorText(locationText |
| .getDisplay())); |
| } |
| } |
| |
| private void initEditorListener() { |
| getSite().getPage().addPartListener(partListener2); |
| getSite().getWorkbenchWindow().getSelectionService() |
| .addSelectionListener(selectionListener); |
| editorActivated(getSite().getPage().getActiveEditor()); |
| } |
| |
| public void setFocus() { |
| text.setFocus(); |
| } |
| |
| public void dispose() { |
| getSite().getPage().removePartListener(partListener2); |
| getSite().getWorkbenchWindow().getSelectionService() |
| .removeSelectionListener(selectionListener); |
| xpathComputer.dispose(); |
| super.dispose(); |
| } |
| |
| private void editorActivated(IWorkbenchPart part) { |
| if ((part != activeEditor) && (part instanceof IEditorPart)) { |
| IEditorPart editor = (IEditorPart) part; |
| IStructuredModel model = getEditorModel(editor); |
| if (model != null) { |
| activeEditor = editor; |
| xpathComputer.setModel(model); |
| xpathComputer.setSelectedNode((Document) model |
| .getAdapter(Document.class)); |
| } |
| recomputeXPath(); |
| } |
| } |
| |
| private void editorClosed(IWorkbenchPart part) { |
| if (part == activeEditor) { |
| treeViewer.setInput(null); |
| locationText.setText(""); |
| activeEditor = null; |
| } |
| } |
| |
| private IStructuredModel getEditorModel(IEditorPart editor) { |
| return (IStructuredModel) editor.getAdapter(IStructuredModel.class); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public Object getAdapter(Class key) { |
| Object adapter = null; |
| if (key.equals(IShowInTarget.class) && (treeViewer != null)) { |
| adapter = new IShowInTarget() { |
| public boolean show(ShowInContext context) { |
| treeViewer.setSelection(context.getSelection()); |
| return treeViewer.getSelection().equals( |
| context.getSelection()); |
| } |
| }; |
| } else if (key.equals(IShowInSource.class) && (activeEditor != null)) { |
| adapter = new IShowInSource() { |
| public ShowInContext getShowInContext() { |
| return new ShowInContext(activeEditor.getEditorInput(), |
| activeEditor.getEditorSite().getSelectionProvider() |
| .getSelection()); |
| } |
| }; |
| } else if (key.equals(IShowInTargetList.class) |
| && (activeEditor != null)) { |
| adapter = activeEditor.getAdapter(key); |
| } |
| if (adapter == null) { |
| adapter = super.getAdapter(key); |
| } |
| return adapter; |
| } |
| |
| public void saveState(IMemento memento) { |
| sheetMap.put(currentSheet, text.getText()); |
| memento.putInteger("CurrentSheet", currentSheet); //$NON-NLS-1$ |
| for (Map.Entry<Integer, String> entry : sheetMap.entrySet()) { |
| IMemento child = memento.createChild("Sheet"); //$NON-NLS-1$ |
| child.putInteger("Index", entry.getKey()); //$NON-NLS-1$ |
| child.putString("XPath", entry.getValue()); //$NON-NLS-1$ |
| } |
| boolean link = xpathViewActions.isLinkWithEditor(); |
| memento.putBoolean("LinkWithEditor", link); |
| super.saveState(memento); |
| } |
| |
| @Override |
| public void init(IViewSite site, IMemento memento) throws PartInitException { |
| sheetMap = new HashMap<Integer, String>(); |
| if (memento != null) { |
| IMemento[] sheets = memento.getChildren("Sheet"); //$NON-NLS-1$ |
| if (sheets != null) { |
| currentSheet = memento.getInteger("CurrentSheet"); //$NON-NLS-1$ |
| for (IMemento sheet : sheets) { |
| sheetMap |
| .put( |
| sheet.getInteger("Index"), sheet.getString("XPath")); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |
| Boolean linkWithEditor = memento.getBoolean("LinkWithEditor"); |
| boolean link = false; |
| if (linkWithEditor != null) { |
| link = linkWithEditor.booleanValue(); |
| } |
| xpathViewActions.setLinkWithEditor(link); |
| } |
| if (currentSheet == null) { |
| currentSheet = 0; |
| } |
| super.init(site, memento); |
| } |
| |
| private class XPathPartListener implements IPartListener2 { |
| public void partActivated(IWorkbenchPartReference partRef) { |
| editorActivated(partRef.getPart(false)); |
| } |
| |
| public void partBroughtToTop(IWorkbenchPartReference partRef) { |
| } |
| |
| public void partInputChanged(IWorkbenchPartReference partRef) { |
| } |
| |
| public void partOpened(IWorkbenchPartReference partRef) { |
| } |
| |
| public void partVisible(IWorkbenchPartReference partRef) { |
| } |
| |
| public void partClosed(IWorkbenchPartReference partRef) { |
| editorClosed(partRef.getPart(false)); |
| } |
| |
| public void partDeactivated(IWorkbenchPartReference partRef) { |
| } |
| |
| public void partHidden(IWorkbenchPartReference partRef) { |
| } |
| } |
| |
| private class SelectionProvider implements IPostSelectionProvider { |
| private class PostSelectionChangedListener implements |
| ISelectionChangedListener { |
| public void selectionChanged(SelectionChangedEvent event) { |
| if (!isFiringSelection()) { |
| fireSelectionChanged(event, postListeners); |
| } |
| } |
| } |
| |
| private class SelectionChangedListener implements |
| ISelectionChangedListener { |
| public void selectionChanged(SelectionChangedEvent event) { |
| if (!isFiringSelection()) { |
| fireSelectionChanged(event, listeners); |
| } |
| } |
| } |
| |
| private ListenerList listeners = new ListenerList(); |
| private ListenerList postListeners = new ListenerList(); |
| private ISelectionChangedListener postSelectionChangedListener = new PostSelectionChangedListener(); |
| private ISelectionChangedListener selectionChangedListener = new SelectionChangedListener(); |
| |
| public void addPostSelectionChangedListener( |
| ISelectionChangedListener listener) { |
| postListeners.add(listener); |
| } |
| |
| public void addSelectionChangedListener( |
| ISelectionChangedListener listener) { |
| listeners.add(listener); |
| } |
| |
| public void fireSelectionChanged(final SelectionChangedEvent event, |
| ListenerList listenerList) { |
| isFiringSelection = true; |
| Object[] listeners = listenerList.getListeners(); |
| for (int i = 0; i < listeners.length; ++i) { |
| final ISelectionChangedListener l = (ISelectionChangedListener) listeners[i]; |
| SafeRunner.run(new SafeRunnable() { |
| public void run() { |
| l.selectionChanged(event); |
| } |
| }); |
| } |
| isFiringSelection = false; |
| } |
| |
| public ISelection getSelection() { |
| if (treeViewer != null) { |
| return treeViewer.getSelection(); |
| } |
| return StructuredSelection.EMPTY; |
| } |
| |
| public boolean isFiringSelection() { |
| return isFiringSelection; |
| } |
| |
| public void removePostSelectionChangedListener( |
| ISelectionChangedListener listener) { |
| postListeners.remove(listener); |
| } |
| |
| public void removeSelectionChangedListener( |
| ISelectionChangedListener listener) { |
| listeners.remove(listener); |
| } |
| |
| public void setSelection(ISelection selection) { |
| if (!isFiringSelection) { |
| treeViewer.setSelection(selection); |
| } |
| } |
| } |
| } |