Java tutorial
/******************************************************************************* * Copyright (c) 2013 AGETO Service GmbH 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: * Gunnar Wagenknecht - initial API and implementation *******************************************************************************/ package org.eclipse.gyrex.admin.ui.jobs.internal.generic; import java.util.LinkedHashMap; import java.util.Map; import java.util.Map.Entry; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.DialogField; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.IDialogFieldListener; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.IListAdapter; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.LayoutUtil; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.ListDialogField; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.ListDialogField.ColumnsDescription; import org.eclipse.gyrex.admin.ui.jobs.configuration.wizard.JobConfigurationWizardSession; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.jface.window.Window; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.rap.rwt.widgets.DialogCallback; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.apache.commons.lang.StringUtils; public class GenericJobParameterPage extends WizardPage { private static final long serialVersionUID = 1L; final ListDialogField parameterTable = new ListDialogField(new IListAdapter() { @Override public void customButtonPressed(final ListDialogField field, final int index) { switch (index) { case 0: openAddParameterDialog(); break; case 1: openEditParameterDialog(); break; default: // nothing break; } } @Override public void doubleClicked(final ListDialogField field) { openEditParameterDialog(); } @Override public void selectionChanged(final ListDialogField field) { field.enableButton(2, field.getSelectedElements().size() == 1); } }, new String[] { "New...", "Edit...", "Remove" }, new ColumnLabelProvider() { private static final long serialVersionUID = 1L; @Override public String getText(final Object element) { if (element instanceof Parameter) return ((Parameter) element).getName(); return element == null ? "" : element.toString();//$NON-NLS-1$ } @Override public void update(final ViewerCell cell) { final Parameter element = (Parameter) cell.getElement(); switch (cell.getColumnIndex()) { case 0: cell.setText(element.getName()); break; case 1: cell.setText(element.getValue()); break; default: break; } } }); { parameterTable.setRemoveButtonIndex(2); parameterTable.setTableColumns(new ColumnsDescription(new String[] { "Parameter", "Value" }, true)); } private final JobConfigurationWizardSession session; public GenericJobParameterPage(final JobConfigurationWizardSession session) { super(GenericJobParameterPage.class.getSimpleName()); this.session = session; setTitle("Task Parameter"); setDescription("Configure the task by modifying its launch parameter."); // this page does not have any required fields setPageComplete(true); } @Override public void createControl(final Composite parent) { final Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(GridLayoutFactory.fillDefaults().create()); composite.setLayoutData(GridDataFactory.fillDefaults() .minSize(convertVerticalDLUsToPixels(200), convertHorizontalDLUsToPixels(400)).create()); setControl(composite); parameterTable.setLabelText(String.format("Parameter for %s:", session.getJobTypeName())); parameterTable.setViewerComparator(new ViewerComparator()); final IDialogFieldListener validateListener = new IDialogFieldListener() { @Override public void dialogFieldChanged(final DialogField field) { validate(); } }; parameterTable.setDialogFieldListener(validateListener); LayoutUtil.doDefaultLayout(composite, new DialogField[] { parameterTable }, true); LayoutUtil.setHorizontalGrabbing(parameterTable.getListControl(null)); // initialize from existing parameter readParameterFromSession(); } void openAddParameterDialog() { final AddEditParameterDialog dialog = new AddEditParameterDialog(getShell(), null, parameterTable.getElements()); dialog.openNonBlocking(new DialogCallback() { private static final long serialVersionUID = 1L; @Override public void dialogClosed(final int returnCode) { if ((returnCode == Window.OK) && StringUtils.isNotBlank(dialog.getName())) { parameterTable.addElement(new Parameter(dialog.getName(), dialog.getValue())); } } }); } void openEditParameterDialog() { final Parameter v = (Parameter) parameterTable.getSelectedElements().iterator().next(); final AddEditParameterDialog dialog = new AddEditParameterDialog(getShell(), v, parameterTable.getElements()); dialog.openNonBlocking(new DialogCallback() { private static final long serialVersionUID = 1L; @Override public void dialogClosed(final int returnCode) { if ((returnCode == Window.OK) && StringUtils.isNotBlank(dialog.getName())) { v.setName(dialog.getName()); v.setValue(dialog.getValue()); parameterTable.refresh(); } } }); } private void readParameterFromSession() { parameterTable.removeAllElements(); for (final Entry<String, String> e : session.getParameter().entrySet()) { parameterTable.addElement(new Parameter(e.getKey(), e.getValue())); } parameterTable.selectElements(null); } private void saveParameterToSession() { final Map<String, String> result = new LinkedHashMap<>(); for (final Object variable : parameterTable.getElements()) { final Parameter v = (Parameter) variable; result.put(v.getName(), v.getValue()); } session.setParameter(result); } void validate() { saveParameterToSession(); setMessage(null); setPageComplete(true); } }