Java tutorial
/******************************************************************************* * Copyright (c) 2003, 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 *******************************************************************************/ package org.eclipse.debug.internal.ui.sourcelookup; import java.util.ArrayList; import org.eclipse.debug.core.DebugPlugin; import org.eclipse.debug.core.sourcelookup.ISourceContainer; import org.eclipse.debug.core.sourcelookup.ISourceContainerType; import org.eclipse.debug.core.sourcelookup.ISourceLookupDirector; import org.eclipse.debug.internal.ui.DebugPluginImages; import org.eclipse.debug.internal.ui.IDebugHelpContextIds; import org.eclipse.debug.internal.ui.IInternalDebugUIConstants; import org.eclipse.debug.ui.DebugUITools; import org.eclipse.debug.ui.sourcelookup.ISourceContainerBrowser; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; 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.TableViewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.swt.SWT; 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.Shell; import org.eclipse.swt.widgets.Table; import org.eclipse.ui.PlatformUI; /** * The dialog for adding new source containers. Presents the user with a list of * source container types and allows them to select one. * * @since 3.0 */ public class AddSourceContainerDialog extends TitleAreaDialog { private TableViewer fViewer; private SourceContainerViewer fSourceContainerViewer; private ISourceLookupDirector fDirector; /** * Constructor * @param shell the shell to open this dialog on * @param viewer the view associated with this dialog * @param director the backing director */ public AddSourceContainerDialog(Shell shell, SourceContainerViewer viewer, ISourceLookupDirector director) { super(shell); setShellStyle(getShellStyle() | SWT.RESIZE); fSourceContainerViewer = viewer; fDirector = director; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ protected Control createDialogArea(Composite parent) { getShell().setText(SourceLookupUIMessages.addSourceLocation_title); setTitle(SourceLookupUIMessages.addSourceLocation_description); setTitleImage(DebugPluginImages.getImage(IInternalDebugUIConstants.IMG_ADD_SRC_LOC_WIZ)); setMessage(SourceLookupUIMessages.AddSourceContainerDialog_select_source_container); Composite comp = (Composite) super.createDialogArea(parent); GridData gd = new GridData(GridData.FILL_BOTH); GridLayout topLayout = new GridLayout(); topLayout.numColumns = 1; comp.setLayout(topLayout); comp.setLayoutData(gd); ISourceContainerType[] types = filterTypes( DebugPlugin.getDefault().getLaunchManager().getSourceContainerTypes()); fViewer = new TableViewer(comp, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER | SWT.SINGLE); final Table table = fViewer.getTable(); gd = new GridData(GridData.FILL_BOTH); table.setLayoutData(gd); fViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { okPressed(); } }); fViewer.setLabelProvider(new SourceContainerLabelProvider()); fViewer.setContentProvider(new ArrayContentProvider()); fViewer.setComparator(new ViewerComparator()); fViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { ISelection selection = event.getSelection(); if (!selection.isEmpty()) { ISourceContainerType type = (ISourceContainerType) ((IStructuredSelection) selection) .getFirstElement(); setMessage(type.getDescription()); getButton(IDialogConstants.OK_ID).setEnabled(true); } else { getButton(IDialogConstants.OK_ID).setEnabled(false); setMessage(SourceLookupUIMessages.AddSourceContainerDialog_select_source_container); } } }); if (types.length != 0) { fViewer.setInput(types); } Dialog.applyDialogFont(comp); PlatformUI.getWorkbench().getHelpSystem().setHelp(getShell(), IDebugHelpContextIds.ADD_SOURCE_CONTAINER_DIALOG); return comp; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ protected void createButtonsForButtonBar(Composite parent) { super.createButtonsForButtonBar(parent); Table table = fViewer.getTable(); if (table.getItemCount() > 0) { fViewer.setSelection(new StructuredSelection(table.getItem(0).getData())); } } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ protected void okPressed() { ISourceContainerType type = (ISourceContainerType) ((IStructuredSelection) fViewer.getSelection()) .getFirstElement(); if (type != null) { ISourceContainerBrowser browser = DebugUITools.getSourceContainerBrowser(type.getId()); if (browser != null) { ISourceContainer[] results = browser.addSourceContainers(getShell(), fDirector); if (results != null && results.length > 0) { fSourceContainerViewer.addEntries(results); super.okPressed(); } else { return; } } } super.okPressed(); } /** * Removes types without browsers from the provided list of types. * @param types the complete list of source container types * @return the list of source container types that have browsers */ private ISourceContainerType[] filterTypes(ISourceContainerType[] types) { ArrayList validTypes = new ArrayList(); for (int i = 0; i < types.length; i++) { ISourceContainerType type = types[i]; if (fDirector.supportsSourceContainerType(type)) { ISourceContainerBrowser sourceContainerBrowser = DebugUITools .getSourceContainerBrowser(type.getId()); if (sourceContainerBrowser != null && sourceContainerBrowser.canAddSourceContainers(fDirector)) { validTypes.add(type); } } } return (ISourceContainerType[]) validTypes.toArray(new ISourceContainerType[validTypes.size()]); } }