Java tutorial
/******************************************************************************* * 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 *******************************************************************************/ package jp.sourceforge.pdt_tools.jsbeautifier.preferences; import java.util.LinkedList; import java.util.List; import java.util.Set; import jp.sourceforge.pdt_tools.jsbeautifier.Activator; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.dialogs.SelectionStatusDialog; import org.eclipse.ui.model.WorkbenchLabelProvider; public class ProjectSelectionDialog extends SelectionStatusDialog { // the visual selection widget group private TableViewer fTableViewer; private Set<IProject> fProjectsWithSpecifics; // sizing constants private final static int SIZING_SELECTION_WIDGET_HEIGHT = 250; private final static int SIZING_SELECTION_WIDGET_WIDTH = 300; private final static String DIALOG_SETTINGS_SHOW_ALL = "ProjectSelectionDialog.show_all"; //$NON-NLS-1$ private ViewerFilter fFilter; public ProjectSelectionDialog(Shell parentShell, Set<IProject> projectsWithSpecifics) { super(parentShell); setTitle(Messages.ProjectSelectionDialog_title); setMessage(Messages.ProjectSelectionDialog_desciption); fProjectsWithSpecifics = projectsWithSpecifics; fFilter = new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { return fProjectsWithSpecifics.contains(element); } }; } @Override public boolean isHelpAvailable() { return false; } /* * (non-Javadoc) Method declared on Dialog. */ @Override protected Control createDialogArea(Composite parent) { // page group Composite composite = (Composite) super.createDialogArea(parent); Font font = parent.getFont(); composite.setFont(font); createMessageArea(composite); fTableViewer = new TableViewer(composite, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER); fTableViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { doSelectionChanged(((IStructuredSelection) event.getSelection()).toArray()); } }); fTableViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { okPressed(); } }); GridData data = new GridData(SWT.FILL, SWT.FILL, true, true); data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT; data.widthHint = SIZING_SELECTION_WIDGET_WIDTH; fTableViewer.getTable().setLayoutData(data); fTableViewer.setLabelProvider(new WorkbenchLabelProvider()); fTableViewer.setContentProvider(new ContentProvider()); fTableViewer.getControl().setFont(font); Button checkbox = new Button(composite, SWT.CHECK); checkbox.setText(Messages.ProjectSelectionDialog_filter); checkbox.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, true, false)); checkbox.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { updateFilter(((Button) e.widget).getSelection()); } public void widgetDefaultSelected(SelectionEvent e) { updateFilter(((Button) e.widget).getSelection()); } }); IDialogSettings dialogSettings = Activator.getDefault().getDialogSettings(); boolean doFilter = !dialogSettings.getBoolean(DIALOG_SETTINGS_SHOW_ALL) && !fProjectsWithSpecifics.isEmpty(); checkbox.setSelection(doFilter); updateFilter(doFilter); fTableViewer.setInput(ResourcesPlugin.getWorkspace().getRoot()); doSelectionChanged(new Object[0]); Dialog.applyDialogFont(composite); return composite; } protected void updateFilter(boolean selected) { if (selected) { fTableViewer.addFilter(fFilter); } else { fTableViewer.removeFilter(fFilter); } Activator.getDefault().getDialogSettings().put(DIALOG_SETTINGS_SHOW_ALL, !selected); } private void doSelectionChanged(Object[] objects) { if (objects.length != 1) { updateStatus(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "")); setSelectionResult(null); } else { updateStatus(new Status(IStatus.OK, Activator.PLUGIN_ID, "")); setSelectionResult(objects); } } @Override protected void computeResult() { } private class ContentProvider implements IStructuredContentProvider { @Override public void dispose() { } @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } @Override public Object[] getElements(Object inputElement) { if (inputElement instanceof IWorkspaceRoot) { IProject[] projects = ((IWorkspaceRoot) inputElement).getProjects(); List<IProject> list = new LinkedList<IProject>(); for (IProject project : projects) { if (project.isOpen()) { list.add(project); } } return list.toArray(new IProject[list.size()]); } return null; } } }