Java tutorial
/** * Copyright (c) 2002-2009 IBM Corporation 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: * IBM - Initial API and implementation */ package org.eclipse.emf.edit.ui.celleditor; import java.util.ArrayList; import java.util.Collections; import java.util.Iterator; import java.util.List; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.viewers.AbstractTreeViewer; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IContentProvider; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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.Display; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.PatternFilter; import org.eclipse.emf.common.notify.AdapterFactory; import org.eclipse.emf.common.notify.impl.AdapterFactoryImpl; import org.eclipse.emf.common.ui.celleditor.ExtendedComboBoxCellEditor; import org.eclipse.emf.common.util.BasicEList; import org.eclipse.emf.common.util.EList; import org.eclipse.emf.ecore.EClassifier; import org.eclipse.emf.ecore.EDataType; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.EStructuralFeature; import org.eclipse.emf.ecore.util.EcoreUtil; import org.eclipse.emf.edit.provider.ComposedAdapterFactory; import org.eclipse.emf.edit.provider.ItemProvider; import org.eclipse.emf.edit.ui.EMFEditUIPlugin; import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider; public class FeatureEditorDialog extends Dialog { private static final long serialVersionUID = 1L; protected ILabelProvider labelProvider; protected IContentProvider contentProvider; protected Object object; protected EClassifier eClassifier; protected String displayName; protected ItemProvider values; protected List<?> choiceOfValues; protected EList<?> result; protected boolean multiLine; protected boolean unique; /** * @since 2.6 */ public FeatureEditorDialog(Shell parent, ILabelProvider labelProvider, Object object, EClassifier eClassifier, List<?> currentValues, String displayName, List<?> choiceOfValues, boolean multiLine, boolean sortChoices, boolean unique) { super(parent); setShellStyle(getShellStyle() | SWT.RESIZE | SWT.MAX); this.labelProvider = labelProvider; this.object = object; this.eClassifier = eClassifier; this.displayName = displayName; this.choiceOfValues = choiceOfValues; this.multiLine = multiLine; this.unique = unique; AdapterFactory adapterFactory = new ComposedAdapterFactory(Collections.<AdapterFactory>emptyList()); values = new ItemProvider(adapterFactory, currentValues); contentProvider = new AdapterFactoryContentProvider(adapterFactory); if (sortChoices && choiceOfValues != null) { this.choiceOfValues = new ArrayList<Object>(choiceOfValues); ExtendedComboBoxCellEditor.createItems(this.choiceOfValues, labelProvider, true); } } /** * @deprecated Use {@link #FeatureEditorDialog(Shell, ILabelProvider, Object, EClassifier, List, String, List, boolean, boolean, boolean)}, * which provides proper behaviour for unique and non-unique features. This form retains the old behaviour, where * specifying a list of choices enforces uniqueness. */ @Deprecated public FeatureEditorDialog(Shell parent, ILabelProvider labelProvider, Object object, EClassifier eClassifier, List<?> currentValues, String displayName, List<?> choiceOfValues, boolean multiLine, boolean sortChoices) { this(parent, labelProvider, object, eClassifier, currentValues, displayName, choiceOfValues, multiLine, sortChoices, choiceOfValues != null); } /** * @deprecated Use {@link #FeatureEditorDialog(Shell, ILabelProvider, Object, EClassifier, List, String, List, boolean, boolean, boolean)}, * which provides proper behaviour for unique and non-unique features. This form retains the old behaviour, where * specifying a list of choices enforces uniqueness. */ @Deprecated public FeatureEditorDialog(Shell parent, ILabelProvider labelProvider, Object object, EClassifier eClassifier, List<?> currentValues, String displayName, List<?> choiceOfValues) { this(parent, labelProvider, object, eClassifier, currentValues, displayName, choiceOfValues, false, false, choiceOfValues != null); } public FeatureEditorDialog(Shell parent, ILabelProvider labelProvider, EObject eObject, EStructuralFeature eStructuralFeature, String displayName, List<?> choiceOfValues) { this(parent, labelProvider, eObject, eStructuralFeature.getEType(), (List<?>) eObject.eGet(eStructuralFeature), displayName, choiceOfValues, false, false, eStructuralFeature.isUnique()); } @Override protected void configureShell(Shell shell) { super.configureShell(shell); shell.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_FeatureEditorDialog_title", new Object[] { displayName, labelProvider.getText(object) })); shell.setImage(labelProvider.getImage(object)); } @Override protected Control createDialogArea(Composite parent) { Composite contents = (Composite) super.createDialogArea(parent); GridLayout contentsGridLayout = (GridLayout) contents.getLayout(); contentsGridLayout.numColumns = 3; GridData contentsGridData = (GridData) contents.getLayoutData(); contentsGridData.horizontalAlignment = SWT.FILL; contentsGridData.verticalAlignment = SWT.FILL; Text patternText = null; if (choiceOfValues != null) { Group filterGroupComposite = new Group(contents, SWT.NONE); filterGroupComposite.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_Choices_pattern_group")); filterGroupComposite.setLayout(new GridLayout(2, false)); filterGroupComposite.setLayoutData(new GridData(SWT.FILL, SWT.DEFAULT, true, false, 3, 1)); Label label = new Label(filterGroupComposite, SWT.NONE); label.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_Choices_pattern_label")); patternText = new Text(filterGroupComposite, SWT.BORDER); patternText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); } Composite choiceComposite = new Composite(contents, SWT.NONE); { GridData data = new GridData(SWT.FILL, SWT.FILL, true, true); data.horizontalAlignment = SWT.END; choiceComposite.setLayoutData(data); GridLayout layout = new GridLayout(); data.horizontalAlignment = SWT.FILL; layout.marginHeight = 0; layout.marginWidth = 0; layout.numColumns = 1; choiceComposite.setLayout(layout); } Label choiceLabel = new Label(choiceComposite, SWT.NONE); choiceLabel.setText(choiceOfValues == null ? EMFEditUIPlugin.INSTANCE.getString("_UI_Value_label") : EMFEditUIPlugin.INSTANCE.getString("_UI_Choices_label")); GridData choiceLabelGridData = new GridData(); choiceLabelGridData.verticalAlignment = SWT.FILL; choiceLabelGridData.horizontalAlignment = SWT.FILL; choiceLabel.setLayoutData(choiceLabelGridData); final Table choiceTable = choiceOfValues == null ? null : new Table(choiceComposite, SWT.MULTI | SWT.BORDER); if (choiceTable != null) { GridData choiceTableGridData = new GridData(); choiceTableGridData.widthHint = Display.getCurrent().getBounds().width / 5; choiceTableGridData.heightHint = Display.getCurrent().getBounds().height / 3; choiceTableGridData.verticalAlignment = SWT.FILL; choiceTableGridData.horizontalAlignment = SWT.FILL; choiceTableGridData.grabExcessHorizontalSpace = true; choiceTableGridData.grabExcessVerticalSpace = true; choiceTable.setLayoutData(choiceTableGridData); } final TableViewer choiceTableViewer = choiceOfValues == null ? null : new TableViewer(choiceTable); if (choiceTableViewer != null) { choiceTableViewer.setContentProvider(new AdapterFactoryContentProvider(new AdapterFactoryImpl())); choiceTableViewer.setLabelProvider(labelProvider); final PatternFilter filter = new PatternFilter() { /** * */ private static final long serialVersionUID = 1L; @Override protected boolean isParentMatch(Viewer viewer, Object element) { return viewer instanceof AbstractTreeViewer && super.isParentMatch(viewer, element); } }; choiceTableViewer.addFilter(filter); if (patternText != null) { patternText.addModifyListener(new ModifyListener() { /** * */ private static final long serialVersionUID = 1L; public void modifyText(ModifyEvent e) { filter.setPattern(((Text) e.widget).getText()); choiceTableViewer.refresh(); } }); } choiceTableViewer.setInput(new ItemProvider(choiceOfValues)); } // We use multi even for a single line because we want to respond to the enter key. // int style = multiLine ? SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER : SWT.MULTI | SWT.BORDER; final Text choiceText = choiceOfValues == null ? new Text(choiceComposite, style) : null; if (choiceText != null) { GridData choiceTextGridData = new GridData(); choiceTextGridData.widthHint = Display.getCurrent().getBounds().width / 5; choiceTextGridData.verticalAlignment = SWT.BEGINNING; choiceTextGridData.horizontalAlignment = SWT.FILL; choiceTextGridData.grabExcessHorizontalSpace = true; if (multiLine) { choiceTextGridData.verticalAlignment = SWT.FILL; choiceTextGridData.grabExcessVerticalSpace = true; } choiceText.setLayoutData(choiceTextGridData); } Composite controlButtons = new Composite(contents, SWT.NONE); GridData controlButtonsGridData = new GridData(); controlButtonsGridData.verticalAlignment = SWT.FILL; controlButtonsGridData.horizontalAlignment = SWT.FILL; controlButtons.setLayoutData(controlButtonsGridData); GridLayout controlsButtonGridLayout = new GridLayout(); controlButtons.setLayout(controlsButtonGridLayout); new Label(controlButtons, SWT.NONE); final Button addButton = new Button(controlButtons, SWT.PUSH); addButton.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_Add_label")); GridData addButtonGridData = new GridData(); addButtonGridData.verticalAlignment = SWT.FILL; addButtonGridData.horizontalAlignment = SWT.FILL; addButton.setLayoutData(addButtonGridData); final Button removeButton = new Button(controlButtons, SWT.PUSH); removeButton.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_Remove_label")); GridData removeButtonGridData = new GridData(); removeButtonGridData.verticalAlignment = SWT.FILL; removeButtonGridData.horizontalAlignment = SWT.FILL; removeButton.setLayoutData(removeButtonGridData); Label spaceLabel = new Label(controlButtons, SWT.NONE); GridData spaceLabelGridData = new GridData(); spaceLabelGridData.verticalSpan = 2; spaceLabel.setLayoutData(spaceLabelGridData); final Button upButton = new Button(controlButtons, SWT.PUSH); upButton.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_Up_label")); GridData upButtonGridData = new GridData(); upButtonGridData.verticalAlignment = SWT.FILL; upButtonGridData.horizontalAlignment = SWT.FILL; upButton.setLayoutData(upButtonGridData); final Button downButton = new Button(controlButtons, SWT.PUSH); downButton.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_Down_label")); GridData downButtonGridData = new GridData(); downButtonGridData.verticalAlignment = SWT.FILL; downButtonGridData.horizontalAlignment = SWT.FILL; downButton.setLayoutData(downButtonGridData); Composite featureComposite = new Composite(contents, SWT.NONE); { GridData data = new GridData(SWT.FILL, SWT.FILL, true, true); data.horizontalAlignment = SWT.END; featureComposite.setLayoutData(data); GridLayout layout = new GridLayout(); data.horizontalAlignment = SWT.FILL; layout.marginHeight = 0; layout.marginWidth = 0; layout.numColumns = 1; featureComposite.setLayout(layout); } Label featureLabel = new Label(featureComposite, SWT.NONE); featureLabel.setText(EMFEditUIPlugin.INSTANCE.getString("_UI_Feature_label")); GridData featureLabelGridData = new GridData(); featureLabelGridData.horizontalSpan = 2; featureLabelGridData.horizontalAlignment = SWT.FILL; featureLabelGridData.verticalAlignment = SWT.FILL; featureLabel.setLayoutData(featureLabelGridData); final Table featureTable = new Table(featureComposite, SWT.MULTI | SWT.BORDER); GridData featureTableGridData = new GridData(); featureTableGridData.widthHint = Display.getCurrent().getBounds().width / 5; featureTableGridData.heightHint = Display.getCurrent().getBounds().height / 3; featureTableGridData.verticalAlignment = SWT.FILL; featureTableGridData.horizontalAlignment = SWT.FILL; featureTableGridData.grabExcessHorizontalSpace = true; featureTableGridData.grabExcessVerticalSpace = true; featureTable.setLayoutData(featureTableGridData); final TableViewer featureTableViewer = new TableViewer(featureTable); featureTableViewer.setContentProvider(contentProvider); featureTableViewer.setLabelProvider(labelProvider); featureTableViewer.setInput(values); if (!values.getChildren().isEmpty()) { featureTableViewer.setSelection(new StructuredSelection(values.getChildren().get(0))); } if (choiceTableViewer != null) { choiceTableViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { if (addButton.isEnabled()) { addButton.notifyListeners(SWT.Selection, null); } } }); featureTableViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { if (removeButton.isEnabled()) { removeButton.notifyListeners(SWT.Selection, null); } } }); } if (choiceText != null) { choiceText.addKeyListener(new KeyAdapter() { /** * */ private static final long serialVersionUID = 1L; @Override public void keyPressed(KeyEvent event) { if (!multiLine && (event.character == '\r' || event.character == '\n')) { try { Object value = EcoreUtil.createFromString((EDataType) eClassifier, choiceText.getText()); values.getChildren().add(value); choiceText.setText(""); featureTableViewer.setSelection(new StructuredSelection(value)); event.doit = false; } catch (RuntimeException exception) { // Ignore } } else if (event.character == '\33') { choiceText.setText(""); event.doit = false; } } }); } upButton.addSelectionListener(new SelectionAdapter() { /** * */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(SelectionEvent event) { IStructuredSelection selection = (IStructuredSelection) featureTableViewer.getSelection(); int minIndex = 0; for (Iterator<?> i = selection.iterator(); i.hasNext();) { Object value = i.next(); int index = values.getChildren().indexOf(value); values.getChildren().move(Math.max(index - 1, minIndex++), value); } } }); downButton.addSelectionListener(new SelectionAdapter() { /** * */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(SelectionEvent event) { IStructuredSelection selection = (IStructuredSelection) featureTableViewer.getSelection(); int maxIndex = values.getChildren().size() - selection.size(); for (Iterator<?> i = selection.iterator(); i.hasNext();) { Object value = i.next(); int index = values.getChildren().indexOf(value); values.getChildren().move(Math.min(index + 1, maxIndex++), value); } } }); addButton.addSelectionListener(new SelectionAdapter() { /** * */ private static final long serialVersionUID = 1L; // event is null when choiceTableViewer is double clicked @Override public void widgetSelected(SelectionEvent event) { if (choiceTableViewer != null) { IStructuredSelection selection = (IStructuredSelection) choiceTableViewer.getSelection(); for (Iterator<?> i = selection.iterator(); i.hasNext();) { Object value = i.next(); if (!unique || !values.getChildren().contains(value)) { values.getChildren().add(value); } } featureTableViewer.setSelection(selection); } else if (choiceText != null) { try { Object value = EcoreUtil.createFromString((EDataType) eClassifier, choiceText.getText()); if (!unique || !values.getChildren().contains(value)) { values.getChildren().add(value); choiceText.setText(""); } featureTableViewer.setSelection(new StructuredSelection(value)); } catch (RuntimeException exception) { // Ignore } } } }); removeButton.addSelectionListener(new SelectionAdapter() { /** * */ private static final long serialVersionUID = 1L; // event is null when featureTableViewer is double clicked @Override public void widgetSelected(SelectionEvent event) { IStructuredSelection selection = (IStructuredSelection) featureTableViewer.getSelection(); Object firstValue = null; for (Iterator<?> i = selection.iterator(); i.hasNext();) { Object value = i.next(); if (firstValue == null) { firstValue = value; } values.getChildren().remove(value); } if (!values.getChildren().isEmpty()) { featureTableViewer.setSelection(new StructuredSelection(values.getChildren().get(0))); } if (choiceTableViewer != null) { choiceTableViewer.setSelection(selection); } else if (choiceText != null) { if (firstValue != null) { String value = EcoreUtil.convertToString((EDataType) eClassifier, firstValue); choiceText.setText(value); } } } }); return contents; } @Override protected void okPressed() { result = new BasicEList<Object>(values.getChildren()); super.okPressed(); } @Override public boolean close() { contentProvider.dispose(); return super.close(); } public EList<?> getResult() { return result; } }