package org.simantics.modeling.ui.actions; import java.util.ArrayList; import java.util.Iterator; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.ICheckStateProvider; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; 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.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.dialogs.SelectionDialog; import org.eclipse.ui.internal.IWorkbenchHelpContextIds; import org.eclipse.ui.internal.WorkbenchMessages; import org.simantics.ui.internal.Activator; @SuppressWarnings("restriction") public abstract class AssignSymbolGroupsDialog extends SelectionDialog { private static final String DIALOG = "AssignSymbolGroupsDialog"; //$NON-NLS-1$ static String SELECT_ALL_TITLE = WorkbenchMessages.SelectionDialog_selectLabel; static String DESELECT_ALL_TITLE = WorkbenchMessages.SelectionDialog_deselectLabel; // the root element to populate the viewer with protected Object inputElement; // providers for populating this dialog private ILabelProvider labelProvider; private IStructuredContentProvider contentProvider; private ICheckStateProvider checkStateProvider; // the visual selection widget group protected CheckboxTableViewer listViewer; private IDialogSettings dialogBoundsSettings; // sizing constants private final static int SIZING_SELECTION_WIDGET_HEIGHT = 250; private final static int SIZING_SELECTION_WIDGET_WIDTH = 300; /** * Creates a list selection dialog. * * @param parentShell the parent shell * @param input the root element to populate this dialog with * @param contentProvider the content provider for navigating the model * @param labelProvider the label provider for displaying model elements * @param message the message to be displayed at the top of this dialog, or * null to display a default message */ public AssignSymbolGroupsDialog(Shell parentShell, Object input, IStructuredContentProvider contentProvider, ILabelProvider labelProvider, ICheckStateProvider checkStateProvider, String message) { super(parentShell); setTitle(WorkbenchMessages.ListSelection_title); inputElement = input; this.contentProvider = contentProvider; this.labelProvider = labelProvider; this.checkStateProvider = checkStateProvider; if (message != null) { setMessage(message); } else { setMessage(WorkbenchMessages.ListSelection_message); } IDialogSettings settings = Activator.getDefault().getDialogSettings(); dialogBoundsSettings = settings.getSection(DIALOG); if (dialogBoundsSettings == null) dialogBoundsSettings = settings.addNewSection(DIALOG); } @Override protected IDialogSettings getDialogBoundsSettings() { return dialogBoundsSettings; } /** * Add the selection and deselection buttons to the dialog. * @param composite org.eclipse.swt.widgets.Composite */ private void addSelectionButtons(Composite composite) { Composite buttonComposite = new Composite(composite, SWT.NONE); GridLayout layout = new GridLayout(); layout.marginWidth = 0; layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING); layout.verticalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.VERTICAL_SPACING); buttonComposite.setLayout(layout); buttonComposite.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, true)); Button selectButton = createButton(buttonComposite, IDialogConstants.SELECT_ALL_ID, SELECT_ALL_TITLE, false); SelectionListener listener = new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { listViewer.setAllChecked(true); checkStateChanged(contentProvider.getElements(inputElement), true); } }; selectButton.addSelectionListener(listener); Button deselectButton = createButton(buttonComposite, IDialogConstants.DESELECT_ALL_ID, DESELECT_ALL_TITLE, false); listener = new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { listViewer.setAllChecked(false); checkStateChanged(contentProvider.getElements(inputElement), false); } }; deselectButton.addSelectionListener(listener); @SuppressWarnings("unused") Label label = new Label(buttonComposite, SWT.NONE); Button newButton = createButton(buttonComposite, IDialogConstants.INTERNAL_ID-1, "&New...", false); listener = new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { newAction(); } }; newButton.addSelectionListener(listener); Button removeButton = createButton(buttonComposite, IDialogConstants.INTERNAL_ID-2, "&Remove", false); listener = new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { deleteAction( ((IStructuredSelection)listViewer.getSelection()) .toArray()); } }; removeButton.addSelectionListener(listener); layout.numColumns = 1; } protected abstract void newAction(); protected abstract void deleteAction(Object[] array); protected abstract void checkStateChanged(Object[] elements, boolean checked); /** * Visually checks the previously-specified elements in this dialog's list * viewer. */ private void checkInitialSelections() { Iterator itemsToCheck = getInitialElementSelections().iterator(); while (itemsToCheck.hasNext()) { listViewer.setChecked(itemsToCheck.next(), true); } } /* * (non-Javadoc) * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ protected void configureShell(Shell shell) { super.configureShell(shell); PlatformUI.getWorkbench().getHelpSystem().setHelp(shell, IWorkbenchHelpContextIds.LIST_SELECTION_DIALOG); } /* (non-Javadoc) * Method declared on Dialog. */ protected Control createDialogArea(Composite parent) { // page group Composite composite = (Composite) super.createDialogArea(parent); initializeDialogUnits(composite); Composite cc = new Composite(composite, SWT.NONE); { GridLayout layout = new GridLayout(); layout.marginHeight = 0; layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN); layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING); layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING); layout.numColumns = 2; cc.setLayout(layout); cc.setLayoutData(new GridData(GridData.FILL_BOTH)); } Label label = createMessageArea(cc); GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(label); listViewer = CheckboxTableViewer.newCheckList(cc, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION); GridData data = new GridData(GridData.FILL_BOTH); data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT; data.widthHint = SIZING_SELECTION_WIDGET_WIDTH; listViewer.getTable().setLayoutData(data); listViewer.setLabelProvider(labelProvider); listViewer.setContentProvider(contentProvider); listViewer.setCheckStateProvider(checkStateProvider); listViewer.getTable().addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { if(e.keyCode == SWT.DEL) { deleteAction( ((IStructuredSelection)listViewer.getSelection()) .toArray()); } } }); listViewer.addCheckStateListener(new ICheckStateListener() { @Override public void checkStateChanged(CheckStateChangedEvent event) { AssignSymbolGroupsDialog.this.checkStateChanged(new Object[] { event.getElement() }, event.getChecked()); } }); addSelectionButtons(cc); initializeViewer(); // initialize page if (!getInitialElementSelections().isEmpty()) { checkInitialSelections(); } Dialog.applyDialogFont(composite); return composite; } /** * Returns the viewer used to show the list. * * @return the viewer, or null if not yet created */ protected CheckboxTableViewer getViewer() { return listViewer; } /** * Initializes this dialog's viewer after it has been laid out. */ private void initializeViewer() { listViewer.setInput(inputElement); } /** * The ListSelectionDialog implementation of this * Dialog method builds a list of the selected elements for later * retrieval by the client and closes this dialog. */ protected void okPressed() { // Get the input children. Object[] children = contentProvider.getElements(inputElement); // Build a list of selected children. if (children != null) { ArrayList list = new ArrayList(); for (int i = 0; i < children.length; ++i) { Object element = children[i]; if (listViewer.getChecked(element)) { list.add(element); } } setResult(list); } super.okPressed(); } }