Java tutorial
package net.sf.sveditor.ui.text; /******************************************************************************* * Copyright (c) 2000, 2011 IBM Corporation and others. * 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: * IBM Corporation - initial API and implementation * Armond Paiva - repurposed from JDT for SVEditor Objects Quick View *******************************************************************************/ import net.sf.sveditor.core.SVCorePlugin; import net.sf.sveditor.core.db.SVDBItemType; import net.sf.sveditor.core.objects.ObjectsTreeNode; import net.sf.sveditor.ui.SVEditorUtil; import net.sf.sveditor.ui.views.objects.ObjectsLabelProvider; import net.sf.sveditor.ui.views.objects.ObjectsViewContentProvider; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.KeyListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.ui.PartInitException; import org.eclipse.ui.dialogs.FilteredTree; import org.eclipse.ui.dialogs.PatternFilter; /** * Show outline in light-weight control. * * @since 2.1 */ public class ObjectsInformationControl extends AbstractInformationControl { /** * Creates a new Java outline information control. * * @param parent * @param shellStyle * @param treeStyle * @param commandId */ public ObjectsInformationControl(Shell parent, int shellStyle, int treeStyle, String commandId) { super(parent, shellStyle, treeStyle, commandId, true); } protected FilteredTree fObjectTree; protected PatternFilter fPatternFilter; protected TreeViewer fTreeViewer; protected ObjectsViewContentProvider fContentProvider; @Override public void setFocus() { fObjectTree.getFilterControl().setFocus(); }; /** * {@inheritDoc} */ @Override protected TreeViewer createTreeViewer(Composite parent, int style) { fPatternFilter = new PatternFilter(); fObjectTree = new FilteredTree(parent, SWT.H_SCROLL, fPatternFilter, true); fTreeViewer = fObjectTree.getViewer(); fContentProvider = new ObjectsViewContentProvider(); final Tree tree = fTreeViewer.getTree(); GridData gd = new GridData(GridData.FILL_BOTH); gd.heightHint = tree.getItemHeight() * 20; // Initial height of dialog gd.widthHint = 600; // Initial width of dialog tree.setLayoutData(gd); fTreeViewer.setContentProvider(fContentProvider); fTreeViewer.setLabelProvider(new ObjectsLabelProvider()); fTreeViewer.setInput(SVCorePlugin.getDefault().getSVDBIndexRegistry()); fTreeViewer.setComparator(new ViewerComparator()); addKeyListeners(); fTreeViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { IStructuredSelection sel = (IStructuredSelection) event.getSelection(); if (sel.getFirstElement() instanceof ObjectsTreeNode) { ObjectsTreeNode n = (ObjectsTreeNode) sel.getFirstElement(); // First level nodes for object types get expanded on double click if (n == fContentProvider.getModulesNode() || n == fContentProvider.getInterfacesNode() || n == fContentProvider.getPackagesNode()) { fTreeViewer.setExpandedState(n, !fTreeViewer.getExpandedState(n)); // Packages toggle expanded state } else if (n.getItemDecl().getType() == SVDBItemType.PackageDecl) { fTreeViewer.setExpandedState(n, !fTreeViewer.getExpandedState(n)); // Otherwise, try to open associated file } else { if (n.getItemDecl() != null) { try { if (n.getItemDecl() != null && n.getItemDecl().getSVDBItem() != null) { SVEditorUtil.openEditor(n.getItemDecl().getSVDBItem()); } } catch (PartInitException e) { e.printStackTrace(); } } } } } }); return fTreeViewer; } private void addKeyListeners() { final Tree tree = fTreeViewer.getTree(); tree.addKeyListener(new KeyListener() { public void keyReleased(KeyEvent e) { } public void keyPressed(KeyEvent e) { if (tree.getSelectionCount() == 1 && (tree.getSelection()[0].getData() instanceof ObjectsTreeNode)) { ObjectsTreeNode n = (ObjectsTreeNode) tree.getSelection()[0].getData(); if (e.keyCode == SWT.CR) { // First level nodes for object types get expanded if (n == fContentProvider.getModulesNode() || n == fContentProvider.getInterfacesNode() || n == fContentProvider.getPackagesNode()) { fTreeViewer.setExpandedState(n, !fTreeViewer.getExpandedState(n)); // Packages toggle expanded state } else if (n.getItemDecl().getType() == SVDBItemType.PackageDecl) { fTreeViewer.setExpandedState(n, !fTreeViewer.getExpandedState(n)); // Otherwise, try to open associated file } else if (n.getItemDecl() != null && n.getItemDecl().getFile() != null) { try { SVEditorUtil.openEditor(n.getItemDecl().getFile()); } catch (PartInitException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } } else if (e.keyCode == SWT.ARROW_RIGHT) { // First level nodes for object types get expanded if (n == fContentProvider.getModulesNode() || n == fContentProvider.getInterfacesNode() || n == fContentProvider.getPackagesNode()) { fTreeViewer.setExpandedState(n, true); // Packages toggle expanded state } else if (n.getItemDecl().getType() == SVDBItemType.PackageDecl) { fTreeViewer.setExpandedState(n, true); // Otherwise, at leaf, do nothing } } else if (e.keyCode == SWT.ARROW_LEFT) { // First level nodes for object types get collapsed if not already // collapsed. Otherwise, focus is moved up to the filter string entry if (n == fContentProvider.getModulesNode() || n == fContentProvider.getInterfacesNode() || n == fContentProvider.getPackagesNode()) { if (fTreeViewer.getExpandedState(fContentProvider.getModulesNode())) { fTreeViewer.setExpandedState(fContentProvider.getModulesNode(), false); } else { fObjectTree.getFilterControl().setFocus(); } // Packages get collapsed if not already collapsed. Otherwise, // the top level package node is collapsed if not already collapsed... // otherwise we jump focus up to the filter string entry } else if (n.getItemDecl().getType() == SVDBItemType.PackageDecl) { if (fTreeViewer.getExpandedState(n)) { fTreeViewer.setExpandedState(n, false); } else { if (fTreeViewer.getExpandedState(fContentProvider.getPackagesNode())) { fTreeViewer.setExpandedState(fContentProvider.getPackagesNode(), false); fTreeViewer.setSelection( new StructuredSelection(fContentProvider.getPackagesNode())); } else { fObjectTree.getFilterControl().setFocus(); } } // Otherwise, at leaf, collapse and select parent node } else if (n.getItemDecl() != null && n.getParent() != null) { fTreeViewer.setExpandedState(n.getParent(), false); fTreeViewer.setSelection(new StructuredSelection(n.getParent())); } } else if (e.keyCode == SWT.HOME) { fObjectTree.getFilterControl().setFocus(); } } } }); } @Override protected String getId() { return "net.sf.sveditor.ui.text.QuickObjects"; //$NON-NLS-1$ } /** * {@inheritDoc} */ @Override public void setInput(Object information) { } }