Java tutorial
/******************************************************************************* * Copyright (c) 2012, 2016, 2017 PDT Extension Group 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: * PDT Extension Group - initial API and implementation * Kaloyan Raev - [501269] externalize strings *******************************************************************************/ package org.eclipse.php.composer.ui.editor.composer; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.apache.commons.lang3.StringUtils; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IAction; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.*; import org.eclipse.osgi.util.NLS; import org.eclipse.php.composer.api.collection.Persons; import org.eclipse.php.composer.api.objects.Person; import org.eclipse.php.composer.ui.ComposerUIPluginImages; import org.eclipse.php.composer.ui.dialogs.PersonDialog; import org.eclipse.php.composer.ui.editor.ComposerFormPage; import org.eclipse.php.composer.ui.editor.FormLayoutFactory; import org.eclipse.php.composer.ui.editor.TableSection; import org.eclipse.php.composer.ui.parts.TablePart; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.forms.widgets.Section; import org.eclipse.ui.forms.widgets.TableWrapData; public class AuthorSection extends TableSection implements PropertyChangeListener { private TableViewer authorViewer; private IAction addAction; private IAction editAction; private IAction removeAction; private static final int ADD_INDEX = 0; private static final int EDIT_INDEX = 1; private static final int REMOVE_INDEX = 2; class AuthorController extends StyledCellLabelProvider implements IStructuredContentProvider { private Persons authors; private Image authorImage = ComposerUIPluginImages.PERSON.createImage(); public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { authors = (Persons) newInput; } public Object[] getElements(Object inputElement) { return authors.toArray(); } public void update(ViewerCell cell) { Object obj = cell.getElement(); if (obj instanceof Person) { Person author = (Person) obj; StyledString styledString = new StyledString(author.getName()); if (author.getEmail() != null && !author.getEmail().trim().isEmpty()) { styledString.append(" <" + author.getEmail().trim() + ">", StyledString.COUNTER_STYLER); //$NON-NLS-1$ //$NON-NLS-2$ } if (author.getHomepage() != null && !author.getHomepage().trim().isEmpty()) { styledString.append(" - " + author.getHomepage().trim(), StyledString.DECORATIONS_STYLER); //$NON-NLS-1$ } cell.setText(styledString.toString()); cell.setStyleRanges(styledString.getStyleRanges()); cell.setImage(authorImage); super.update(cell); } } } public AuthorSection(ComposerFormPage page, Composite parent) { super(page, parent, Section.DESCRIPTION, new String[] { Messages.AuthorSection_AddButton, Messages.AuthorSection_EditButton, Messages.AuthorSection_RemoveButton }); // createClient(getSection(), page.getManagedForm().getToolkit()); } @Override protected void createClient(Section section, FormToolkit toolkit) { section.setText(Messages.AuthorSection_Title); section.setDescription(Messages.AuthorSection_Description); section.setLayoutData(new TableWrapData(TableWrapData.FILL_GRAB)); Composite container = createClientContainer(section, 2, toolkit); createViewerPartControl(container, SWT.MULTI, 2, toolkit); TablePart tablePart = getTablePart(); AuthorController authorController = new AuthorController(); authorViewer = tablePart.getTableViewer(); authorViewer.setContentProvider(authorController); authorViewer.setLabelProvider(authorController); toolkit.paintBordersFor(container); section.setClient(container); section.setLayout(FormLayoutFactory.createClearGridLayout(false, 1)); authorViewer.setInput(composerPackage.getAuthors()); composerPackage.addPropertyChangeListener(this); updateButtons(); makeActions(); updateMenu(); } protected boolean createCount() { return true; } private void updateButtons() { ISelection selection = authorViewer.getSelection(); TablePart tablePart = getTablePart(); tablePart.setButtonEnabled(ADD_INDEX, enabled); tablePart.setButtonEnabled(EDIT_INDEX, !selection.isEmpty() && enabled); tablePart.setButtonEnabled(REMOVE_INDEX, !selection.isEmpty() && enabled); } private void updateMenu() { IStructuredSelection selection = (IStructuredSelection) authorViewer.getSelection(); editAction.setEnabled(selection.size() > 0); removeAction.setEnabled(selection.size() > 0); } @Override public void setEnabled(boolean enabled) { super.setEnabled(enabled); updateButtons(); refresh(); authorViewer.getTable().setEnabled(enabled); } public void refresh() { authorViewer.refresh(); super.refresh(); } @Override public void propertyChange(PropertyChangeEvent e) { if (e.getPropertyName().startsWith("authors")) { //$NON-NLS-1$ // refresh(); } } protected void selectionChanged(IStructuredSelection sel) { updateButtons(); updateMenu(); } private void makeActions() { addAction = new Action(Messages.AuthorSection_AddActionTitle) { public void run() { handleAdd(); } }; editAction = new Action(Messages.AuthorSection_EditActionTitle) { public void run() { handleEdit(); } }; removeAction = new Action(Messages.AuthorSection_RemoveActionTitle) { public void run() { handleRemove(); } }; } @Override protected void fillContextMenu(IMenuManager manager) { manager.add(addAction); manager.add(editAction); manager.add(removeAction); } private void handleAdd() { PersonDialog diag = new PersonDialog(authorViewer.getTable().getShell(), new Person()); if (diag.open() == Dialog.OK) { composerPackage.getAuthors().add(diag.getPerson()); refresh(); } } private void handleEdit() { Person author = (Person) ((StructuredSelection) authorViewer.getSelection()).getFirstElement(); PersonDialog diag = new PersonDialog(authorViewer.getTable().getShell(), author.clone()); if (diag.open() == Dialog.OK) { author.setName(diag.getPerson().getName()); author.setEmail(diag.getPerson().getEmail()); author.setHomepage(diag.getPerson().getHomepage()); author.setRole(diag.getPerson().getRole()); } } @SuppressWarnings("unchecked") private void handleRemove() { StructuredSelection selection = ((StructuredSelection) authorViewer.getSelection()); Iterator<Object> it = selection.iterator(); String[] names = new String[selection.size()]; List<Person> persons = new ArrayList<Person>(); for (int i = 0; it.hasNext(); i++) { Person person = (Person) it.next(); persons.add(person); names[i] = person.getName(); } String title = selection.size() > 1 ? Messages.AuthorSection_RemoveDialogTitlePlural : Messages.AuthorSection_RemoveDialogTitle; MessageDialog diag = new MessageDialog(authorViewer.getTable().getShell(), title, null, NLS.bind(Messages.AuthorSection_RemoveDialogMessage, StringUtils.join(names, ", ")), //$NON-NLS-1$ MessageDialog.WARNING, new String[] { Messages.AuthorSection_YesButton, Messages.AuthorSection_NoButton }, 0); if (diag.open() == Dialog.OK) { for (Person person : persons) { composerPackage.getAuthors().remove(person); } } } @Override protected void buttonSelected(int index) { switch (index) { case ADD_INDEX: handleAdd(); break; case EDIT_INDEX: handleEdit(); break; case REMOVE_INDEX: handleRemove(); break; } } }