Java tutorial
/******************************************************************************* * Copyright (c) 2006-2007, Cloudsmith Inc. * The code, documentation and other materials contained herein have been * licensed under the Eclipse Public License - v 1.0 by the copyright holder * listed above, as the Initial Contributor under such license. The text of * such license is available at www.eclipse.org. ******************************************************************************/ package org.eclipse.buckminster.jnlp.wizard.install; import java.util.ArrayList; import java.util.List; import org.eclipse.buckminster.jnlp.MaterializationConstants; import org.eclipse.buckminster.jnlp.MaterializationUtils; import org.eclipse.buckminster.jnlp.Messages; import org.eclipse.buckminster.jnlp.distroprovider.DistroVariant; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StackLayout; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.TableItem; /** * @author Karel Brezina * */ public class SelectDistroPage extends InstallWizardPage { private class VariantViewerComparator extends ViewerComparator { private int m_column = -1; private int m_direction = SWT.NONE; @Override public int compare(Viewer viewer, Object e1, Object e2) { if (m_direction == SWT.NONE) return 0; String ai = getColumnValueFromVariant((DistroVariant) e1, m_column); String bi = getColumnValueFromVariant((DistroVariant) e2, m_column); return m_direction == SWT.UP ? safeStringComarator(ai, bi) : safeStringComarator(bi, ai); } public void setSortColumn(int column) { if (column == m_column) { // Same column as last sort; toggle the direction switch (m_direction) { case SWT.NONE: m_direction = SWT.UP; break; case SWT.UP: m_direction = SWT.DOWN; break; default: m_direction = SWT.NONE; } } else { // New column; do an ascending sort m_column = column; m_direction = SWT.UP; } m_variantsTableViewer.getTable().setSortColumn(m_columns.get(m_column)); m_variantsTableViewer.getTable().setSortDirection(m_direction); } @Override public void sort(Viewer viewer, Object[] elements) { if (m_direction != SWT.NONE) super.sort(viewer, elements); } private int safeStringComarator(String arg0, String arg1) { if (arg0 == null && arg1 == null) return 0; if (arg0 == null) return -1; if (arg1 == null) return 1; return arg0.compareTo(arg1); } } private static final String DISTRO_COMPATIBLE = "1"; //$NON-NLS-1$ private static final String DISTRO_BROKEN = "-1"; //$NON-NLS-1$ private static final String DISTRO_INCOMPATIBLE = "0"; //$NON-NLS-1$ private static final String ICON_COMPATIBLE = "distro.compatible.gif"; //$NON-NLS-1$ private static final String ICON_INCOMPATIBLE = "distro.incompatible.gif"; //$NON-NLS-1$ private static final String ICON_BROKEN = "distro.broken.gif"; //$NON-NLS-1$ private static final String IMAGE_BOX_COMPATIBLE = "box.enabled.compatible.png"; //$NON-NLS-1$ private static final String IMAGE_BOX_INCOMPATIBLE = "box.enabled.incompatible.png"; //$NON-NLS-1$ private static final String IMAGE_BOX_BROKEN = "box.disabled.broken.png"; //$NON-NLS-1$ private static final String IMAGE_BOX_DISABLED = "box.disabled.png"; //$NON-NLS-1$ private Font m_boldFont; private Font m_italicFont; private Color m_orangeColor; private Color m_redColor; private final Image m_iconCompatible; private final Image m_iconIncompatible; private final Image m_iconBroken; private final Image m_imageBoxCompatible; private final Image m_imageBoxIncompatible; private final Image m_imageBoxBroken; private final Image m_imageBoxDisabled; private Composite m_topComposite; private StackLayout m_stackLayout; private Composite m_noDistroPageComposite; private Label m_noDistroLabel; private Composite m_pageComposite; private Button m_incompatibleButton; private Button m_brokenButton; private TableViewer m_variantsTableViewer; private List<TableColumn> m_columns; private Label m_selectionBoxLabel; private Label m_selectionHeadingLabel; private Composite m_selectionComposite; private Composite m_selectionDetailsComposite; private static final String UNSPECIFIED = Messages.unspecified; private List<DistroVariant> m_data; private boolean m_initialized = false; public SelectDistroPage() { super(MaterializationConstants.STEP_SELECT_DISTRO, Messages.select_distro, Messages.select_from_the_available_packagings_of_this_stack, null); m_iconCompatible = MaterializationUtils.getImage(ICON_COMPATIBLE); m_iconIncompatible = MaterializationUtils.getImage(ICON_INCOMPATIBLE); m_iconBroken = MaterializationUtils.getImage(ICON_BROKEN); m_imageBoxCompatible = MaterializationUtils.getImage(IMAGE_BOX_COMPATIBLE); m_imageBoxIncompatible = MaterializationUtils.getImage(IMAGE_BOX_INCOMPATIBLE); m_imageBoxBroken = MaterializationUtils.getImage(IMAGE_BOX_BROKEN); m_imageBoxDisabled = MaterializationUtils.getImage(IMAGE_BOX_DISABLED); } public void createControl(Composite parent) { m_topComposite = new Composite(parent, SWT.NONE); m_stackLayout = new StackLayout(); m_topComposite.setLayout(m_stackLayout); m_noDistroPageComposite = new Composite(m_topComposite, SWT.NONE); m_noDistroPageComposite.setLayout(new GridLayout(1, false)); m_noDistroLabel = new Label(m_noDistroPageComposite, SWT.WRAP); m_noDistroLabel.setText( Messages.sorry_the_publisher_of_this_stack_hasnt_packaged_it_in_a_distro_available_for_download); FontData[] fontData = m_noDistroLabel.getFont().getFontData(); fontData[0].setStyle(SWT.BOLD); m_boldFont = new Font(getShell().getDisplay(), fontData); fontData[0].setStyle(SWT.ITALIC); m_italicFont = new Font(getShell().getDisplay(), fontData); m_orangeColor = new Color(getShell().getDisplay(), 255, 161, 68); m_redColor = getShell().getDisplay().getSystemColor(SWT.COLOR_RED); m_noDistroLabel.setFont(m_boldFont); m_pageComposite = new Composite(m_topComposite, SWT.NONE); m_pageComposite.setLayout(new GridLayout(1, false)); Label label = new Label(m_pageComposite, SWT.NONE); label.setText(Messages.the_following_distros_appear_to_be_compatible_with_your_platform_with_colon); label.setFont(m_boldFont); Composite flagsComposite = new Composite(m_pageComposite, SWT.NONE); GridLayout gridLayout = new GridLayout(2, false); gridLayout.marginWidth = 0; flagsComposite.setLayout(gridLayout); label = new Label(flagsComposite, SWT.NONE); label.setText(Messages.show); GridData gridData = new GridData(); gridData.verticalSpan = 2; gridData.verticalAlignment = SWT.TOP; label.setLayoutData(gridData); m_incompatibleButton = new Button(flagsComposite, SWT.CHECK); m_incompatibleButton.setText(Messages.incompatible_packagings); m_brokenButton = new Button(flagsComposite, SWT.CHECK); m_brokenButton.setText(Messages.broken_packagings); SelectionListener distroFilterListener = new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent arg0) { initializeTable(); } }; m_incompatibleButton.addSelectionListener(distroFilterListener); m_brokenButton.addSelectionListener(distroFilterListener); final Table variantsTable = new Table(m_pageComposite, SWT.BORDER | SWT.FULL_SELECTION); variantsTable.setLayoutData(new GridData(GridData.FILL_BOTH)); variantsTable.setHeaderVisible(true); variantsTable.setLinesVisible(true); m_variantsTableViewer = new TableViewer(variantsTable); m_variantsTableViewer.setContentProvider(new IStructuredContentProvider() { public void dispose() { // nothing to dispose } @SuppressWarnings("unchecked") public Object[] getElements(Object inputElement) { return ((List<DistroVariant>) inputElement).toArray(new DistroVariant[0]); } public void inputChanged(Viewer arg0, Object arg1, Object arg2) { // nothing to do } }); m_variantsTableViewer.setLabelProvider(new ITableLabelProvider() { private List<ILabelProviderListener> m_listeners = new ArrayList<ILabelProviderListener>(); public void addListener(ILabelProviderListener arg0) { m_listeners.add(arg0); } public void dispose() { // nothing to dispose } public Image getColumnImage(Object element, int columnIndex) { if (columnIndex == 0) { String status = getColumnValueFromVariant((DistroVariant) element, columnIndex); return DISTRO_COMPATIBLE.equals(status) ? m_iconCompatible : (DISTRO_INCOMPATIBLE.equals(status) ? m_iconIncompatible : m_iconBroken); } return null; } public String getColumnText(Object element, int columnIndex) { if (columnIndex > 0) return getColumnValueFromVariant((DistroVariant) element, columnIndex); return null; } public boolean isLabelProperty(Object arg0, String arg1) { return false; } public void removeListener(ILabelProviderListener arg0) { m_listeners.remove(arg0); } }); m_variantsTableViewer.setComparator(new VariantViewerComparator()); m_columns = new ArrayList<TableColumn>(); TableColumn column = new TableColumn(variantsTable, SWT.NONE); column.setText(Messages.compatible); column.setAlignment(SWT.CENTER); m_columns.add(column); column = new TableColumn(variantsTable, SWT.NONE); column.setText(Messages.CPU_architecture); m_columns.add(column); column = new TableColumn(variantsTable, SWT.NONE); column.setText(Messages.operating_system); m_columns.add(column); column = new TableColumn(variantsTable, SWT.NONE); column.setText(Messages.windowing_system); m_columns.add(column); column = new TableColumn(variantsTable, SWT.NONE); column.setText(Messages.other_releases); m_columns.add(column); column = new TableColumn(variantsTable, SWT.NONE); column.setText(Messages.language); m_columns.add(column); SelectionListener columnSelectionListener = new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent arg0) { ((VariantViewerComparator) m_variantsTableViewer.getComparator()) .setSortColumn(m_columns.indexOf(arg0.widget)); m_variantsTableViewer.refresh(); packColumns(); selectFirstRow(); } }; for (TableColumn col : m_columns) col.addSelectionListener(columnSelectionListener); variantsTable.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent arg0) { TableItem item = (TableItem) arg0.item; DistroVariant variant = (DistroVariant) item.getData(); for (Control control : m_selectionDetailsComposite.getChildren()) control.dispose(); Label selectionDetailsLabel = new Label(m_selectionDetailsComposite, SWT.NONE); selectionDetailsLabel.setFont(m_boldFont); String variantStatus = getColumnValueFromVariant(variant, 0); if (DISTRO_COMPATIBLE.equals(variantStatus)) { m_selectionBoxLabel.setImage(m_imageBoxCompatible); if (variant.isSimplePackaging()) { m_selectionHeadingLabel.setText(Messages.simple_packaging_with_colon); selectionDetailsLabel.setText(Messages.unspecified_in_brackets); } else { m_selectionHeadingLabel.setText(Messages.distro_variant_for_with_colon); selectionDetailsLabel.setText(variant.getPlatformString()); } } else if (DISTRO_INCOMPATIBLE.equals(variantStatus)) { m_selectionBoxLabel.setImage(m_imageBoxIncompatible); m_selectionHeadingLabel.setText(Messages.incompatible_distro_variant_for_with_colon); selectionDetailsLabel.dispose(); addSelectionDetailsPlatformLabel(variant.getArch(), variant.isArchCompatible()); addSelectionDetailsPlatformLabel(variant.getOS(), variant.isOSCompatible()); addSelectionDetailsPlatformLabel(variant.getWS(), variant.isWSCompatible()); addSelectionDetailsPlatformLabel(variant.getRelease(), variant.isReleaseCompatible()); addSelectionDetailsPlatformLabel(variant.getNL(), variant.isNLCompatible()); } else if (DISTRO_BROKEN.equals(variantStatus)) { m_selectionBoxLabel.setImage(m_imageBoxBroken); m_selectionHeadingLabel.setText(Messages.distro_broken_not_downloadable_with_colon); selectionDetailsLabel.setText(Messages.publisher_attention_needed_in_brackets); selectionDetailsLabel.setFont(null); } else { m_selectionBoxLabel.setImage(m_imageBoxDisabled); m_selectionHeadingLabel.setText(Messages.no_selected_packaging); selectionDetailsLabel.setText(""); //$NON-NLS-1$ } getContainer().updateButtons(); m_selectionDetailsComposite.layout(); m_selectionComposite.pack(); m_selectionComposite.layout(); } }); m_selectionComposite = new Composite(m_pageComposite, SWT.NONE); gridLayout = new GridLayout(2, false); gridLayout.marginHeight = gridLayout.marginWidth = 0; m_selectionComposite.setLayout(gridLayout); m_selectionBoxLabel = new Label(m_selectionComposite, SWT.NONE); Composite selectionDetailsComposite = new Composite(m_selectionComposite, SWT.NONE); gridLayout = new GridLayout(1, false); gridLayout.marginHeight = gridLayout.marginWidth = 0; selectionDetailsComposite.setLayout(gridLayout); m_selectionHeadingLabel = new Label(selectionDetailsComposite, SWT.NONE); m_selectionDetailsComposite = new Composite(selectionDetailsComposite, SWT.NONE); RowLayout rowLayout = new RowLayout(); rowLayout.marginLeft = 10; rowLayout.justify = true; rowLayout.spacing = 0; rowLayout.wrap = false; m_selectionDetailsComposite.setLayout(rowLayout); setControl(m_topComposite); } @Override public boolean isPageComplete() { if (isCurrentPage()) { if (getInstallWizard().getDistroVariants() == null || getInstallWizard().getDistroVariants().size() == 0) return false; TableItem[] selection = m_variantsTableViewer.getTable().getSelection(); if (selection != null && selection.length == 1) { DistroVariant variant = (DistroVariant) selection[0].getData(); if (variant.isBroken()) return false; return true; } } else if (getInstallWizard().getDistro() != null) return true; return false; } @Override public boolean performPageCommit() { if (isCurrentPage()) { TableItem[] selection = m_variantsTableViewer.getTable().getSelection(); DistroVariant variant = (DistroVariant) selection[0].getData(); getInstallWizard().retrieveDistro(variant.getDistroId()); } return true; } @Override protected void beforeDisplaySetup() { if (getInstallWizard().getDistroVariants() == null || getInstallWizard().getDistroVariants().size() == 0) { // dynamic width of m_noDistroLabel GridData layoutData = (GridData) m_noDistroLabel.getLayoutData(); layoutData.widthHint = m_noDistroLabel.getShell().getSize().x - 20; m_noDistroPageComposite.layout(); m_stackLayout.topControl = m_noDistroPageComposite; m_topComposite.layout(); } else if (!m_initialized) { initializeTable(); setupFilters(); m_pageComposite.layout(); m_stackLayout.topControl = m_pageComposite; m_topComposite.layout(); } // distros are selected here getInstallWizard().setDistro(null); } private void addSelectionDetailsPlatformLabel(String property, boolean isCompatible) { if (property != null) { if (m_selectionDetailsComposite.getChildren().length > 0) addSelectionDetailsPlatformLabelSeparator(); Label label = new Label(m_selectionDetailsComposite, SWT.NONE); label.setFont(m_boldFont); label.setText(property); if (!isCompatible) label.setForeground(m_redColor); } } private void addSelectionDetailsPlatformLabelSeparator() { Label comma = new Label(m_selectionDetailsComposite, SWT.NONE); comma.setFont(m_boldFont); comma.setText(", "); //$NON-NLS-1$ } private String getColumnValueFromVariant(DistroVariant variant, int column) { if (column > 0 && variant.isSimplePackaging()) return UNSPECIFIED; switch (column) { case 0: return (variant.isBroken() ? DISTRO_BROKEN : (variant.isCompatible() ? DISTRO_COMPATIBLE : DISTRO_INCOMPATIBLE)); case 1: return variant.getArch(); case 2: return variant.getOS(); case 3: return variant.getWS(); case 4: return variant.getRelease(); case 5: return variant.getNL(); default: throw new IllegalArgumentException( NLS.bind(Messages.column_number_0_does_not_exist, Integer.valueOf(column))); } } private void initializeTable() { m_data = new ArrayList<DistroVariant>(); for (DistroVariant variant : getInstallWizard().getDistroVariants()) { if (!variant.isCompatible() && !variant.isBroken() && !m_incompatibleButton.getSelection() || variant.isBroken() && !m_brokenButton.getSelection()) continue; m_data.add(variant); } m_variantsTableViewer.setInput(m_data); m_variantsTableViewer.refresh(); packColumns(); selectFirstRow(); setTableItemFontAndColor(); m_initialized = true; } private void packColumns() { m_variantsTableViewer.getTable().setRedraw(false); setTableItemFontAndColor(); for (TableColumn col : m_columns) col.pack(); m_variantsTableViewer.getTable().setRedraw(true); } private void selectFirstRow() { Table table = m_variantsTableViewer.getTable(); if (table.getItems().length > 0) { table.setSelection(0); table.showSelection(); Event event = new Event(); event.item = table.getItem(0); table.notifyListeners(SWT.Selection, event); } } private void setTableItemFontAndColor() { TableItem[] items = m_variantsTableViewer.getTable().getItems(); for (TableItem item : items) { DistroVariant variant = (DistroVariant) item.getData(); if (variant.isBroken()) item.setForeground(m_orangeColor); else item.setForeground(null); if (variant.isSimplePackaging()) item.setFont(m_italicFont); else item.setFont(null); } } private void setupFilters() { boolean compatible = false; boolean incompatible = false; boolean broken = false; for (DistroVariant variant : getInstallWizard().getDistroVariants()) { if (variant.isCompatible() && !variant.isBroken()) compatible = true; if (!variant.isCompatible() && !variant.isBroken()) incompatible = true; if (variant.isBroken()) broken = true; } if (!incompatible) m_incompatibleButton.setEnabled(false); if (!broken) m_brokenButton.setEnabled(false); if (!compatible) { if (incompatible) { m_incompatibleButton.setSelection(true); m_incompatibleButton.notifyListeners(SWT.Selection, new Event()); } else if (broken) { m_brokenButton.setSelection(true); m_brokenButton.notifyListeners(SWT.Selection, new Event()); } } } }