Java tutorial
/******************************************************************************* * Copyright (c) 2012 Per Kr. Soreide. * 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: * Per Kr. Soreide - initial API and implementation *******************************************************************************/ package bndtools.release.ui; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import java.util.TreeSet; import java.util.regex.Pattern; import org.eclipse.jface.layout.TreeColumnLayout; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnViewer; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.ComboBoxCellEditor; import org.eclipse.jface.viewers.EditingSupport; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.TreeViewerColumn; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CCombo; import org.eclipse.swt.custom.SashForm; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.swt.widgets.Widget; import aQute.bnd.differ.Baseline; import aQute.bnd.differ.Baseline.Info; import aQute.bnd.version.Version; import bndtools.release.Activator; import bndtools.release.api.ReleaseOption; import bndtools.release.nl.Messages; public class BundleTree extends Composite { public final static String VERSION_STRING = "(\\d+)(\\.(\\d+)(\\.(\\d+)(\\.([-_\\da-zA-Z]+))?)?)?"; //$NON-NLS-1$ public final static Pattern VERSION = Pattern.compile(VERSION_STRING); protected SashForm sashForm; protected Button showAll; protected Combo options; protected TreeViewer infoViewer; protected Composite infoViewerComposite; protected TreeViewer bundleTreeViewer; protected Composite bundleTreeViewerComposite; protected TreeContentProvider bundleTreeViewerProvider = new TreeContentProvider(); protected InfoContentProvider infoTreeViewerProvider = new InfoContentProvider(); private Map<Object, Version> initialSuggested; public BundleTree(Composite composite) { this(composite, SWT.NONE); } public BundleTree(Composite composite, int style) { super(composite, style); createControl(); } public void createControl() { setLayout(createGridLayout()); setLayoutData(createFillGridData()); sashForm = new SashForm(this, SWT.VERTICAL); sashForm.setLayout(createGridLayout()); sashForm.setLayoutData(createFillGridData()); createInfoViewer(sashForm); Composite composite = new Composite(sashForm, SWT.NONE); composite.setLayout(createGridLayout()); composite.setLayoutData(createFillGridData()); createBundleTreeViewer(composite); createButtons(composite); sashForm.setWeights(new int[] { 30, 70 }); } private void createInfoViewer(Composite container) { infoViewerComposite = new Composite(container, SWT.NONE); infoViewerComposite.setLayoutData(createFillGridData()); TreeColumnLayout layout = new TreeColumnLayout(); infoViewerComposite.setLayout(layout); infoViewer = new TreeViewer(infoViewerComposite, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER | SWT.FULL_SELECTION); infoViewer.setUseHashlookup(true); infoViewer.getTree().setHeaderVisible(true); TreeViewerColumn treeViewerColumn = new TreeViewerColumn(infoViewer, SWT.NONE); TreeColumn treeColumn = treeViewerColumn.getColumn(); layout.setColumnData(treeColumn, new ColumnWeightData(450, 180, true)); treeColumn.setText(Messages.bundleAndPackageName); treeViewerColumn.setLabelProvider(new InfoLabelProvider()); treeViewerColumn = new TreeViewerColumn(infoViewer, SWT.NONE); treeColumn = treeViewerColumn.getColumn(); layout.setColumnData(treeColumn, new ColumnWeightData(80, 80, true)); treeColumn.setText(Messages.version2); treeViewerColumn.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof Baseline) { return ((Baseline) element).getOlderVersion().getWithoutQualifier().toString(); } if (element instanceof Info) { return ((Info) element).olderVersion.toString(); } return ""; //$NON-NLS-1$ } }); treeViewerColumn = new TreeViewerColumn(infoViewer, SWT.NONE); treeColumn = treeViewerColumn.getColumn(); layout.setColumnData(treeColumn, new ColumnWeightData(80, 80, true)); treeColumn.setText(Messages.newVersion); treeViewerColumn.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof Baseline) { return ((Baseline) element).getSuggestedVersion().toString(); } if (element instanceof Info) { return ((Info) element).suggestedVersion != null ? ((Info) element).suggestedVersion.toString() : ""; //$NON-NLS-1$ } return ""; //$NON-NLS-1$ } }); treeViewerColumn.setEditingSupport(new InlineComboEditingSupport(infoViewer)); infoViewer.setContentProvider(infoTreeViewerProvider); infoViewer.setAutoExpandLevel(2); } private void createBundleTreeViewer(Composite container) { bundleTreeViewerComposite = new Composite(container, SWT.NONE); bundleTreeViewerComposite.setLayoutData(createFillGridData()); TreeColumnLayout layout = new TreeColumnLayout(); bundleTreeViewerComposite.setLayout(layout); bundleTreeViewer = new TreeViewer(bundleTreeViewerComposite, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER | SWT.FULL_SELECTION); bundleTreeViewer.setUseHashlookup(true); bundleTreeViewer.getTree().setHeaderVisible(true); TreeViewerColumn treeViewerColumn = new TreeViewerColumn(bundleTreeViewer, SWT.NONE); TreeColumn treeColumn = treeViewerColumn.getColumn(); layout.setColumnData(treeColumn, new ColumnWeightData(100, 340, true)); treeColumn.setText(Messages.symbNameResources); treeViewerColumn.setLabelProvider(new TreeLabelProvider()); bundleTreeViewer.setContentProvider(bundleTreeViewerProvider); bundleTreeViewer.setAutoExpandLevel(3); } private void createButtons(Composite parent) { GridLayout gridLayout = new GridLayout(3, false); gridLayout.marginWidth = 0; Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(gridLayout); GridData gridData = new GridData(GridData.FILL_HORIZONTAL); gridData.grabExcessHorizontalSpace = true; composite.setLayoutData(gridData); showAll = new Button(composite, SWT.CHECK); showAll.setText(Messages.showAllPackages); showAll.setFont(getFont()); showAll.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { Widget widget = event.widget; if (widget == showAll) { bundleTreeViewerProvider.setShowAll(!bundleTreeViewerProvider.isShowAll()); infoTreeViewerProvider.setShowAll(!infoTreeViewerProvider.isShowAll()); if (bundleTreeViewer.getInput() != null || infoViewer.getInput() != null) { bundleTreeViewer.setSelection(null, false); infoViewer.setSelection(null, false); boolean showInfoView = showInfoView(bundleTreeViewer.getInput()); if (showInfoView) { sashForm.setMaximizedControl(null); } else { sashForm.setMaximizedControl(bundleTreeViewerComposite); } bundleTreeViewer.refresh(); infoViewer.refresh(); sashForm.redraw(); } } } }); gridData = new GridData(SWT.END, SWT.CENTER, true, true); Label label = new Label(composite, SWT.NONE); label.setText(Messages.releaseOption); label.setLayoutData(gridData); options = new Combo(composite, SWT.DROP_DOWN | SWT.READ_ONLY); options.setItems( new String[] { Messages.updateVersionsAndRelease, Messages.updateVersions, Messages.release }); options.add(Messages.comboSelectText, 0); options.select(0); } public void setInput(Object input) { boolean showInfoView = showInfoView(input); if (showInfoView) { sashForm.setMaximizedControl(null); } else { sashForm.setMaximizedControl(bundleTreeViewerComposite); } if (input == null) { bundleTreeViewer.setInput(Collections.emptyList()); infoViewer.setInput(Collections.emptyList()); } else { bundleTreeViewer.getTree().setRedraw(false); bundleTreeViewer.setSelection(null, false); bundleTreeViewer.setInput(input); bundleTreeViewer.getTree().setRedraw(true); infoViewer.getTree().setRedraw(false); infoViewer.setSelection(null, false); infoViewer.setInput(input); infoViewer.getTree().setRedraw(true); } sashForm.redraw(); } private static boolean showInfoView(Object input) { if (input instanceof List && ((List<?>) input).size() > 0) { Object obj = ((List<?>) input).get(0); if (obj instanceof Baseline) { return true; } } return false; } protected Version getInitialSuggestedVersion(Object obj) { if (initialSuggested == null) { initialSuggested = new HashMap<Object, Version>(); } Version version = initialSuggested.get(obj); if (version != null) { return version; } if (obj instanceof Info) { version = ((Info) obj).suggestedVersion; } else { version = ((Baseline) obj).getSuggestedVersion(); } initialSuggested.put(obj, version); return version; } class InlineComboEditingSupport extends EditingSupport { protected ComboBoxCellEditor editor; public InlineComboEditingSupport(ColumnViewer viewer) { super(viewer); this.editor = new ComboBoxCellEditor((Composite) viewer.getControl(), new String[] {}); Control control = editor.getControl(); ((CCombo) control).addSelectionListener(new SelectionListener() { @Override public void widgetSelected(SelectionEvent e) { editor.deactivate(); } @Override public void widgetDefaultSelected(SelectionEvent e) { } }); } @Override protected boolean canEdit(Object element) { if (element instanceof Baseline) { return true; } return false; } @Override protected CellEditor getCellEditor(Object element) { Set<String> versions = new TreeSet<String>(); if (element instanceof Baseline) { Baseline info = (Baseline) element; versions.add(getInitialSuggestedVersion(info).toString()); if (getInitialSuggestedVersion(info).compareTo(Version.ONE) < 0) { versions.add(Version.ONE.toString()); } } if (element instanceof Info) { Info info = (Info) element; versions.add(getInitialSuggestedVersion(info).toString()); if (getInitialSuggestedVersion(info).compareTo(Version.ONE) < 0) { versions.add(Version.ONE.toString()); } } editor.setItems(versions.toArray(new String[0])); return editor; } @Override protected Object getValue(Object element) { return null; // Not needed } @Override protected void setValue(Object element, Object value) { // Not needed } @Override protected void initializeCellEditorValue(CellEditor cellEditor, ViewerCell cell) { String selectedVersion = ""; //$NON-NLS-1$ if (cell.getElement() instanceof Baseline) { selectedVersion = ((Baseline) cell.getElement()).getSuggestedVersion().toString(); } else if (cell.getElement() instanceof Info) { selectedVersion = ((Info) cell.getElement()).suggestedVersion.toString(); } String[] items = ((ComboBoxCellEditor) cellEditor).getItems(); int idx = -1; for (int i = 0; i < items.length; i++) { if (items[i].equals(selectedVersion)) { idx = i; break; } } if (idx > -1) cellEditor.setValue(idx); cell.setText(selectedVersion); } @Override protected void saveCellEditorValue(CellEditor cellEditor, ViewerCell cell) { int idx = ((Integer) cellEditor.getValue()).intValue(); String[] items = ((ComboBoxCellEditor) cellEditor).getItems(); String selectedVersion; if (idx > -1) { selectedVersion = items[idx]; } else { selectedVersion = ((CCombo) cellEditor.getControl()).getText(); } Version version; try { version = Version.parseVersion(selectedVersion); } catch (IllegalArgumentException e) { Activator.message(String.format(Messages.versionInvalid, selectedVersion)); return; } cell.setText(selectedVersion); if (cell.getElement() instanceof Baseline) { ((Baseline) cell.getElement()).setSuggestedVersion(version); } else if (cell.getElement() instanceof Info) { ((Info) cell.getElement()).suggestedVersion = version; } } } public ReleaseOption getReleaseOption() { return ReleaseOption.parse(options.getText()); } private static GridLayout createGridLayout() { GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 1; gridLayout.horizontalSpacing = 0; gridLayout.verticalSpacing = 0; gridLayout.marginWidth = 0; gridLayout.marginHeight = 0; return gridLayout; } private static GridData createFillGridData() { return new GridData(GridData.FILL, GridData.FILL, true, true); } }