| /******************************************************************************* |
| * Copyright (c) 2008 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 |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.xpath.internal.ui.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.Label; |
| import org.eclipse.swt.widgets.Menu; |
| 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.w3c.dom.Attr; |
| 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; |
| |
| 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()); |
| this.contentProvider = new JFaceNodeContentProviderXPath(); |
| treeViewer.setContentProvider(contentProvider); |
| 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(); |
| // TODO |
| // hookGlobalActions(); |
| |
| getSite().setSelectionProvider(selectionProvider); |
| |
| initEditorListener(); |
| |
| // TODO when xpath core plugin exists |
| // org.eclipse.jface.fieldassist.AutoCompleteField; |
| } |
| |
| private void handleTreeSelection(IStructuredSelection selection, boolean reveal) |
| { |
| if (activeEditor != null) |
| { |
| isFiringSelection = true; |
| if (selection.getFirstElement() != null) |
| { |
| IDOMNode node = (IDOMNode)selection.getFirstElement(); |
| ITextEditor textEditor = (ITextEditor)activeEditor.getAdapter(ITextEditor.class); |
| if (textEditor != null) |
| { |
| 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 = calculateXPathToNode(selected); |
| updateLocationText(); |
| } |
| |
| private static String calculateXPathToNode(Node node) |
| { |
| StringBuffer sb = new StringBuffer(); |
| while (node != null) |
| { |
| switch (node.getNodeType()) |
| { |
| case Node.ATTRIBUTE_NODE: |
| sb.insert(0, node.getNodeName()); |
| sb.insert(0, "/@"); //$NON-NLS-1$ |
| node = ((Attr)node).getOwnerElement(); |
| break; |
| case Node.ELEMENT_NODE: |
| Node sibling = node; |
| int position = 1; |
| while ((sibling = sibling.getPreviousSibling()) != null) |
| { |
| if (sibling.getNodeType() == Node.ELEMENT_NODE && sibling.getNodeName().equals(node.getNodeName())) |
| { |
| ++position; |
| } |
| } |
| if (position > 1) |
| sb.insert(0, "[" + position + "]"); //$NON-NLS-1$ //$NON-NLS-2$ |
| else |
| { |
| sibling = node; |
| boolean following = false; |
| while ((sibling = sibling.getNextSibling()) != null) |
| { |
| if (sibling.getNodeType() == Node.ELEMENT_NODE && sibling.getNodeName().equals(node.getNodeName())) |
| { |
| following = true; |
| break; |
| } |
| } |
| if (following) |
| { |
| sb.insert(0, "[1]"); //$NON-NLS-1$ |
| } |
| } |
| sb.insert(0, node.getNodeName()); |
| sb.insert(0, Messages.XPathView_8); |
| node = node.getParentNode(); |
| break; |
| default: |
| node = node.getParentNode(); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| private void recomputeXPath() |
| { |
| if (activeEditor != null) |
| { |
| boolean valid = expressionValid; |
| try |
| { |
| 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(); |
| } |
| } |
| } |
| |
| void xpathRecomputed(NodeList nodeList) |
| { |
| 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; |
| activeEditor = editor; |
| IStructuredModel model = getEditorModel(activeEditor); |
| xpathComputer.setModel(model); |
| if (model != null) |
| { |
| 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") //$NON-NLS-1$ |
| 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.linkWithEditor; |
| 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 ISelectionChangedListener getPostSelectionChangedListener() |
| { |
| return postSelectionChangedListener; |
| } |
| |
| public ISelection getSelection() |
| { |
| if (treeViewer != null) |
| { |
| return treeViewer.getSelection(); |
| } |
| return StructuredSelection.EMPTY; |
| } |
| |
| public ISelectionChangedListener getSelectionChangedListener() |
| { |
| return selectionChangedListener; |
| } |
| |
| 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); |
| } |
| } |
| } |
| } |