Java tutorial
/** * Aptana Studio * Copyright (c) 2005-2011 by Appcelerator, Inc. All Rights Reserved. * Licensed under the terms of the GNU Public License (GPL) v3 (with exceptions). * Please see the license.html included with this distribution for details. * Any modifications to this file must keep this entire header intact. */ package com.aptana.editor.php.internal.ui.preferences; import java.net.URL; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.preference.PreferencePage; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.swt.SWT; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; 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.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import com.aptana.editor.php.internal.builder.IPHPLibrary; import com.aptana.editor.php.internal.builder.LibraryManager; import com.aptana.editor.php.internal.builder.PHPLibrary; import com.aptana.editor.php.internal.builder.UserLibrary; /** * @author Pavel Petrochenko */ public class PHPLibrariesPreferencePage extends PreferencePage implements IWorkbenchPreferencePage { private final class SelectAction implements SelectionListener { boolean select; private SelectAction(boolean doSelect) { this.select = doSelect; } public void widgetDefaultSelected(SelectionEvent e) { } public void widgetSelected(SelectionEvent e) { newCheckList.setAllChecked(select); } } private CheckboxTableViewer newCheckList; @Override protected Control createContents(Composite parent) { Composite body = new Composite(parent, SWT.NONE); body.setLayout(new GridLayout(1, false)); Label label = new Label(body, SWT.NONE | SWT.WRAP); label.setText(Messages.PHPLibrariesPreferencePage_librariesTitle); final Map<URL, Image> images = new HashMap<URL, Image>(); Composite tableAndButton = new Composite(body, SWT.NONE); tableAndButton.setLayout(new GridLayout(2, false)); newCheckList = CheckboxTableViewer.newCheckList(tableAndButton, SWT.BORDER); newCheckList.setContentProvider(new ArrayContentProvider()); newCheckList.setInput(LibraryManager.getInstance().getAllLibraries()); Composite buttons = new Composite(tableAndButton, SWT.NONE); buttons.setLayout(new GridLayout(1, false)); newCheckList.setComparator(new ViewerComparator()); newCheckList.setLabelProvider(new LibraryLabelProvider(images)); GridData layoutData = new GridData(GridData.FILL_BOTH); layoutData.minimumHeight = 400; newCheckList.getControl().setLayoutData(layoutData); body.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent e) { for (Image m : images.values()) { m.dispose(); } } }); layoutData = new GridData(); layoutData.heightHint = 400; body.setLayoutData(layoutData); for (IPHPLibrary l : LibraryManager.getInstance().getAllLibraries()) { newCheckList.setChecked(l, l.isTurnedOn()); } buttons.setLayoutData(new GridData(GridData.FILL_VERTICAL)); Button add = new Button(buttons, SWT.PUSH); add.setText(Messages.PHPLibrariesPreferencePage_newUserLibrary); add.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); add.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(SelectionEvent e) { } public void widgetSelected(SelectionEvent e) { PHPLibraryDialog libraryDialog = new PHPLibraryDialog(Display.getCurrent().getActiveShell(), null, getContent()); if (libraryDialog.open() == Dialog.OK) { UserLibrary result = libraryDialog.getResult(); newCheckList.add(result); newCheckList.setChecked(result, true); } } }); final Button edit = new Button(buttons, SWT.PUSH); edit.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(SelectionEvent e) { // empty } public void widgetSelected(SelectionEvent e) { IStructuredSelection ss = (IStructuredSelection) newCheckList.getSelection(); UserLibrary firstElement = (UserLibrary) ss.getFirstElement(); PHPLibraryDialog libraryDialog = new PHPLibraryDialog(Display.getCurrent().getActiveShell(), firstElement, getContent()); if (libraryDialog.open() == Dialog.OK) { newCheckList.remove(firstElement); newCheckList.add(libraryDialog.getResult()); } } }); edit.setText(Messages.PHPLibrariesPreferencePage_editLibrary); edit.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); final Button remove = new Button(buttons, SWT.PUSH); remove.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(SelectionEvent e) { } public void widgetSelected(SelectionEvent e) { IStructuredSelection ss = (IStructuredSelection) newCheckList.getSelection(); for (Object o : ss.toArray()) { newCheckList.remove(o); } } }); remove.setText(Messages.PHPLibrariesPreferencePage_removeLibrary); tableAndButton.setLayoutData(new GridData(GridData.FILL_BOTH)); remove.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); newCheckList.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection ss = (IStructuredSelection) event.getSelection(); if (ss.isEmpty() || ss.getFirstElement() instanceof PHPLibrary) { edit.setEnabled(false); remove.setEnabled(false); return; } edit.setEnabled(true); remove.setEnabled(true); } }); Button selectAll = new Button(buttons, SWT.PUSH); selectAll.setText(Messages.LibrariesPage_selectAll); selectAll.addSelectionListener(new SelectAction(true)); Button deselectAll = new Button(buttons, SWT.PUSH); deselectAll.setText(Messages.LibrariesPage_deselectAll); selectAll.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); deselectAll.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); deselectAll.addSelectionListener(new SelectAction(false)); edit.setEnabled(false); remove.setEnabled(false); return body; } IPHPLibrary[] getContent() { int count = newCheckList.getTable().getItemCount(); List<IPHPLibrary> ul = new ArrayList<IPHPLibrary>(); for (int a = 0; a < count; a++) { Object elementAt = newCheckList.getElementAt(a); ul.add((IPHPLibrary) elementAt); } return ul.toArray(new IPHPLibrary[ul.size()]); } @Override protected void performDefaults() { newCheckList.setAllChecked(true); } @Override public boolean performOk() { Set<IPHPLibrary> turnedOff = new HashSet<IPHPLibrary>(); for (IPHPLibrary l : LibraryManager.getInstance().getAllLibraries()) { boolean checked = newCheckList.getChecked(l); if (!checked) { turnedOff.add(l); } } int count = newCheckList.getTable().getItemCount(); ArrayList<UserLibrary> ul = new ArrayList<UserLibrary>(); for (int a = 0; a < count; a++) { Object elementAt = newCheckList.getElementAt(a); if (elementAt instanceof UserLibrary) { ul.add((UserLibrary) elementAt); } } LibraryManager.getInstance().setUserLibraries(ul.toArray(new UserLibrary[ul.size()])); LibraryManager.getInstance().setTurnedOff(turnedOff); return true; } public void init(IWorkbench workbench) { } }