Java tutorial
/******************************************************************************* * Copyright (c) 2001, 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 Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.wst.xsd.ui.internal.common.properties.sections; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import com.ibm.icu.util.StringTokenizer; import org.eclipse.gef.commands.CompoundCommand; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.ICellModifier; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableLayout; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.FormAttachment; import org.eclipse.swt.layout.FormData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.TableItem; import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory; import org.eclipse.wst.common.ui.internal.viewers.NavigableTableViewer; import org.eclipse.wst.xsd.ui.internal.common.commands.AddEnumerationsCommand; import org.eclipse.wst.xsd.ui.internal.common.commands.DeleteCommand; import org.eclipse.wst.xsd.ui.internal.common.commands.SetXSDFacetValueCommand; import org.eclipse.wst.xsd.ui.internal.common.util.Messages; import org.eclipse.wst.xsd.ui.internal.common.util.XSDCommonUIUtils; import org.eclipse.wst.xsd.ui.internal.editor.XSDEditorPlugin; import org.eclipse.wst.xsd.ui.internal.widgets.EnumerationsDialog; import org.eclipse.xsd.XSDEnumerationFacet; import org.eclipse.xsd.XSDSimpleTypeDefinition; import org.eclipse.xsd.util.XSDConstants; public class EnumerationsSection extends AbstractSection { private EnumerationsTableViewer enumerationsTable; private Button addButton; private Button addManyButton; private Button deleteButton; /** * */ public EnumerationsSection() { super(); } public void widgetSelected(SelectionEvent e) { XSDSimpleTypeDefinition st = (XSDSimpleTypeDefinition) input; if (e.widget == addButton) { List enumList = st.getEnumerationFacets(); String newName = XSDCommonUIUtils.createUniqueEnumerationValue("value", enumList); //$NON-NLS-1$ AddEnumerationsCommand command = new AddEnumerationsCommand(Messages._UI_ACTION_ADD_ENUMERATION, (XSDSimpleTypeDefinition) input); command.setValue(newName); getCommandStack().execute(command); enumerationsTable.refresh(); int newItemIndex = enumerationsTable.getTable().getItemCount() - 1; enumerationsTable.editElement(enumerationsTable.getElementAt(newItemIndex), 0); } else if (e.widget == addManyButton) { Display display = Display.getCurrent(); // if it is null, get the default one display = display == null ? Display.getDefault() : display; Shell parentShell = display.getActiveShell(); EnumerationsDialog dialog = new EnumerationsDialog(parentShell); dialog.setBlockOnOpen(true); int result = dialog.open(); if (result == Window.OK) { String text = dialog.getText(); String delimiter = dialog.getDelimiter(); StringTokenizer tokenizer = new StringTokenizer(text, delimiter); CompoundCommand compoundCommand = new CompoundCommand(Messages._UI_ACTION_ADD_ENUMERATIONS); while (tokenizer.hasMoreTokens()) { String token = tokenizer.nextToken(); if (dialog.isPreserveWhitespace() == false) { token = token.trim(); } AddEnumerationsCommand command = new AddEnumerationsCommand( Messages._UI_ACTION_ADD_ENUMERATIONS, (XSDSimpleTypeDefinition) input); command.setValue(token); compoundCommand.add(command); } getCommandStack().execute(compoundCommand); } enumerationsTable.refresh(); } else if (e.widget == deleteButton) { StructuredSelection selection = (StructuredSelection) enumerationsTable.getSelection(); if (selection != null) { Iterator i = selection.iterator(); CompoundCommand compoundCommand = new CompoundCommand(Messages._UI_ACTION_DELETE_ENUMERATION); while (i.hasNext()) { Object obj = i.next(); if (obj != null) { if (obj instanceof XSDEnumerationFacet) { XSDEnumerationFacet enumFacet = (XSDEnumerationFacet) obj; DeleteCommand deleteCommand = new DeleteCommand(Messages._UI_ACTION_DELETE_ENUMERATION, enumFacet); compoundCommand.add(deleteCommand); } } } getCommandStack().execute(compoundCommand); enumerationsTable.refresh(); } } else if (e.widget == enumerationsTable.getTable()) { StructuredSelection selection = (StructuredSelection) enumerationsTable.getSelection(); if (selection.getFirstElement() != null) { deleteButton.setEnabled(true); } else { deleteButton.setEnabled(false); } } } public void widgetDefaultSelected(SelectionEvent e) { } public void createContents(Composite parent) { TabbedPropertySheetWidgetFactory factory = getWidgetFactory(); composite = factory.createFlatFormComposite(parent); enumerationsTable = new EnumerationsTableViewer( getWidgetFactory().createTable(composite, SWT.MULTI | SWT.FULL_SELECTION)); enumerationsTable.setInput(input); Table table = enumerationsTable.getTable(); table.addSelectionListener(this); addButton = getWidgetFactory().createButton(composite, XSDEditorPlugin.getXSDString("_UI_REGEX_WIZARD_ADD_BUTTON_LABEL"), SWT.PUSH); //$NON-NLS-1$ addManyButton = getWidgetFactory().createButton(composite, XSDEditorPlugin.getXSDString("_UI_REGEX_WIZARD_ADD_BUTTON_LABEL") + "...", SWT.PUSH); //$NON-NLS-1$ //$NON-NLS-2$ deleteButton = getWidgetFactory().createButton(composite, XSDEditorPlugin.getXSDString("_UI_ACTION_DELETE_INCLUDE"), SWT.PUSH); //$NON-NLS-1$ FormData data2 = new FormData(); data2.top = new FormAttachment(0, 0); data2.left = new FormAttachment(100, -100); data2.right = new FormAttachment(100, 0); // data2.width = 50; addButton.setLayoutData(data2); addButton.addSelectionListener(this); FormData data = new FormData(); data.left = new FormAttachment(addButton, 0, SWT.LEFT); data.right = new FormAttachment(100, 0); data.top = new FormAttachment(addButton, 0); addManyButton.setLayoutData(data); addManyButton.addSelectionListener(this); data = new FormData(); data.left = new FormAttachment(addButton, 0, SWT.LEFT); data.right = new FormAttachment(100, 0); data.top = new FormAttachment(addManyButton, 0); deleteButton.setLayoutData(data); deleteButton.setEnabled(false); deleteButton.addSelectionListener(this); data = new FormData(); data.top = new FormAttachment(0, 0); data.left = new FormAttachment(0, 0); data.right = new FormAttachment(addButton, 0); data.bottom = new FormAttachment(100, 0); data.width = 50; table.setLayoutData(data); table.addListener(SWT.Resize, this); } /* * @see org.eclipse.wst.common.ui.properties.internal.provisional.view.ITabbedPropertySection#refresh() */ public void refresh() { if (isReadOnly) { composite.setEnabled(false); } else { composite.setEnabled(true); } XSDSimpleTypeDefinition st = (XSDSimpleTypeDefinition) input; Iterator validFacets = st.getValidFacets().iterator(); boolean isApplicable = false; while (validFacets.hasNext()) { String aValidFacet = (String) validFacets.next(); if (aValidFacet.equals(XSDConstants.ENUMERATION_ELEMENT_TAG)) { isApplicable = true; } } if (isApplicable) { addButton.setEnabled(true); addManyButton.setEnabled(true); } else { addButton.setEnabled(false); addManyButton.setEnabled(false); } enumerationsTable.setInput(input); } public void handleEvent(Event event) { Table table = enumerationsTable.getTable(); if (event.type == SWT.Resize && event.widget == table) { TableColumn tableColumn = table.getColumn(0); tableColumn.setWidth(table.getSize().x); } } public void dispose() { } public boolean shouldUseExtraSpace() { return true; } class EnumerationsTableViewer extends NavigableTableViewer implements ICellModifier { protected String[] columnProperties = { XSDConstants.ENUMERATION_ELEMENT_TAG }; protected CellEditor[] cellEditors; Table table; public EnumerationsTableViewer(Table table) { super(table); table = getTable(); table.setLinesVisible(true); setContentProvider(new EnumerationsTableContentProvider()); setLabelProvider(new EnumerationsTableLabelProvider()); setColumnProperties(columnProperties); setCellModifier(this); TableColumn column = new TableColumn(table, SWT.NONE, 0); column.setText(columnProperties[0]); column.setAlignment(SWT.LEFT); column.setResizable(true); cellEditors = new CellEditor[1]; TableLayout layout = new TableLayout(); ColumnWeightData data = new ColumnWeightData(100); layout.addColumnData(data); cellEditors[0] = new TextCellEditor(table); getTable().setLayout(layout); setCellEditors(cellEditors); } public boolean canModify(Object element, String property) { return true; } public void modify(Object element, String property, Object value) { if (element instanceof TableItem && (value != null)) { TableItem item = (TableItem) element; XSDEnumerationFacet enumFacet = (XSDEnumerationFacet) item.getData(); SetXSDFacetValueCommand command = new SetXSDFacetValueCommand( Messages._UI_ACTION_SET_ENUMERATION_VALUE, enumFacet); command.setValue((String) value); getCommandStack().execute(command); item.setData(enumFacet); item.setText((String) value); } } public Object getValue(Object element, String property) { if (element instanceof XSDEnumerationFacet) { XSDEnumerationFacet enumFacet = (XSDEnumerationFacet) element; String value = enumFacet.getLexicalValue(); if (value == null) value = ""; //$NON-NLS-1$ return value; } return ""; //$NON-NLS-1$ } } class EnumerationsTableContentProvider implements IStructuredContentProvider { public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } public java.lang.Object[] getElements(java.lang.Object inputElement) { java.util.List list = new ArrayList(); if (inputElement instanceof XSDSimpleTypeDefinition) { XSDSimpleTypeDefinition st = (XSDSimpleTypeDefinition) inputElement; return st.getEnumerationFacets().toArray(); } return list.toArray(); } public void dispose() { } } class EnumerationsTableLabelProvider extends LabelProvider implements ITableLabelProvider { public EnumerationsTableLabelProvider() { } public Image getColumnImage(Object element, int columnIndex) { return XSDEditorPlugin.getXSDImage("icons/XSDSimpleEnum.gif"); //$NON-NLS-1$ } public String getColumnText(Object element, int columnIndex) { if (element instanceof XSDEnumerationFacet) { XSDEnumerationFacet enumFacet = (XSDEnumerationFacet) element; String value = enumFacet.getLexicalValue(); if (value == null) value = ""; //$NON-NLS-1$ return value; } return ""; //$NON-NLS-1$ } } }