Java tutorial
/******************************************************************************* * Copyright (c) 2016 Red Hat. * 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: * Red Hat - Initial Contribution *******************************************************************************/ package org.eclipse.linuxtools.internal.docker.ui.wizards; import java.util.Iterator; import java.util.LinkedHashMap; import org.eclipse.core.databinding.beans.BeanProperties; import org.eclipse.core.runtime.preferences.IEclipsePreferences; import org.eclipse.core.runtime.preferences.InstanceScope; import org.eclipse.jface.databinding.viewers.ObservableListContentProvider; import org.eclipse.jface.databinding.viewers.ViewerSupport; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.linuxtools.docker.ui.Activator; import org.eclipse.linuxtools.internal.docker.ui.SWTImagesFactory; import org.eclipse.linuxtools.internal.docker.ui.launch.LaunchMessages; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; public class ConfigureLabelsPage extends WizardPage { private final int COLUMNS = 2; private static final String CONTAINER_FILTER_LABELS = "containerFilterLabels"; //$NON-NLS-1$ private final ConfigureLabelsModel model; public ConfigureLabelsPage() { super("ConfigureLabelsPage", //$NON-NLS-1$ WizardMessages.getString("ConfigureLabelsPage.title"), //$NON-NLS-1$ SWTImagesFactory.DESC_BANNER_REPOSITORY); setPageComplete(true); this.model = new ConfigureLabelsModel(); } public ConfigureLabelsModel getModel() { return model; } @Override public void createControl(Composite parent) { final Composite container = new Composite(parent, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL).span(1, 1).grab(true, false).applyTo(container); GridLayoutFactory.fillDefaults().numColumns(COLUMNS).margins(6, 6).applyTo(container); if (model == null) { setErrorMessage(LaunchMessages.getString("NoConnectionError.msg")); } else { setErrorMessage(null); createLabelVariablesContainer(container); } setControl(container); } private void createLabelVariablesContainer(final Composite container) { GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(false, false).span(3, 1) .applyTo(new Label(container, SWT.NONE)); final Label envVarLabel = new Label(container, SWT.NONE); envVarLabel.setText(WizardMessages.getString("ImageRunResourceVolVarPage.labelVarLabel")); //$NON-NLS-1$ GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false).span(COLUMNS, 1) .applyTo(envVarLabel); final TableViewer labelVariablesTableViewer = createLabelVariablesTable(container); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.TOP).grab(true, false).hint(200, 100) .applyTo(labelVariablesTableViewer.getTable()); // buttons final Composite buttonsContainers = new Composite(container, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.TOP).grab(false, false).applyTo(buttonsContainers); GridLayoutFactory.fillDefaults().numColumns(1).margins(0, 0).spacing(SWT.DEFAULT, 0) .applyTo(buttonsContainers); final Button addButton = new Button(buttonsContainers, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.TOP).grab(true, false).applyTo(addButton); addButton.setText(WizardMessages.getString("ImageRunResourceVolVarPage.addButton")); //$NON-NLS-1$ addButton.setEnabled(true); addButton.addSelectionListener(onAddLabelVariable(labelVariablesTableViewer)); final Button editButton = new Button(buttonsContainers, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.TOP).grab(true, false).applyTo(editButton); editButton.setText(WizardMessages.getString("ImageRunResourceVolVarPage.editButton")); //$NON-NLS-1$ editButton.setEnabled(true); editButton.addSelectionListener(onEditLabelVariable(labelVariablesTableViewer)); editButton.setEnabled(false); final Button removeButton = new Button(buttonsContainers, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.TOP).grab(true, false).applyTo(removeButton); removeButton.setText(WizardMessages.getString("ImageRunResourceVolVarPage.removeButton")); //$NON-NLS-1$ removeButton.addSelectionListener(onRemoveLabelVariable(labelVariablesTableViewer)); removeButton.setEnabled(false); setDefaultValues(); // update table content when selected image changes ViewerSupport.bind(labelVariablesTableViewer, model.getLabelVariables(), BeanProperties.values( LabelVariableModel.class, new String[] { LabelVariableModel.NAME, LabelVariableModel.VALUE })); // disable the edit and removeButton if the table is empty labelVariablesTableViewer.addSelectionChangedListener(onSelectionChanged(editButton, removeButton)); } private void setDefaultValues() { IEclipsePreferences preferences = InstanceScope.INSTANCE.getNode(Activator.PLUGIN_ID); String filterLabelString = preferences.get(CONTAINER_FILTER_LABELS, ""); //$NON-NLS-1$ String[] labels = filterLabelString.split("\u00a0"); LinkedHashMap<String, String> labelMap = new LinkedHashMap<>(); for (String label : labels) { if (label.length() > 1) { String[] tokens = label.split("="); //$NON-NLS-1$ String key = tokens[0]; String value = ""; //$NON-NLS-1$ if (tokens.length > 1) value = tokens[1]; labelMap.put(key, value); } } model.setLabelVariables(labelMap); } private ISelectionChangedListener onSelectionChanged(final Button... targetButtons) { return e -> { if (e.getSelection().isEmpty()) { setControlsEnabled(targetButtons, false); } else { setControlsEnabled(targetButtons, true); } }; } private TableViewerColumn addTableViewerColumn(final TableViewer tableViewer, final String title, final int width) { final TableViewerColumn viewerColumn = new TableViewerColumn(tableViewer, SWT.NONE); final TableColumn column = viewerColumn.getColumn(); if (title != null) { column.setText(title); } column.setWidth(width); return viewerColumn; } private TableViewer createLabelVariablesTable(Composite container) { final Table table = new Table(container, SWT.BORDER | SWT.FULL_SELECTION | SWT.V_SCROLL | SWT.H_SCROLL); final TableViewer tableViewer = new TableViewer(table); table.setHeaderVisible(true); table.setLinesVisible(true); addTableViewerColumn(tableViewer, WizardMessages.getString("ImageRunResourceVolVarPage.nameColumn"), //$NON-NLS-1$ 200); addTableViewerColumn(tableViewer, WizardMessages.getString("ImageRunResourceVolVarPage.valueColumn"), //$NON-NLS-1$ 200); tableViewer.setContentProvider(new ObservableListContentProvider()); return tableViewer; } private SelectionListener onAddLabelVariable(final TableViewer labelVariablesTableViewer) { return new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { final ContainerLabelVariableDialog dialog = new ContainerLabelVariableDialog(getShell()); dialog.create(); if (dialog.open() == IDialogConstants.OK_ID) { model.getLabelVariables().add(dialog.getLabelVariable()); labelVariablesTableViewer.add(dialog.getLabelVariable()); labelVariablesTableViewer.refresh(); } } }; } private SelectionListener onEditLabelVariable(final TableViewer labelVariablesTableViewer) { return new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { final LabelVariableModel selectedVariable = (LabelVariableModel) labelVariablesTableViewer .getStructuredSelection().getFirstElement(); final ContainerLabelVariableDialog dialog = new ContainerLabelVariableDialog(getShell(), selectedVariable); dialog.create(); if (dialog.open() == IDialogConstants.OK_ID) { selectedVariable.setName(dialog.getLabelVariable().getName()); selectedVariable.setValue(dialog.getLabelVariable().getValue()); labelVariablesTableViewer.refresh(); } } }; } private SelectionListener onRemoveLabelVariable(final TableViewer labelVariablesTableViewer) { return new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { final IStructuredSelection selection = labelVariablesTableViewer.getStructuredSelection(); for (@SuppressWarnings("unchecked") Iterator<LabelVariableModel> iterator = selection.iterator(); iterator.hasNext();) { LabelVariableModel m = iterator.next(); model.removeLabelVariable(m); labelVariablesTableViewer.remove(m); labelVariablesTableViewer.refresh(); } } }; } private static void setControlsEnabled(final Control[] controls, final boolean enabled) { for (Control control : controls) { control.setEnabled(enabled); } } @Override public Image getImage() { return SWTImagesFactory.get(SWTImagesFactory.IMG_LABELS_TAB); } }