Java tutorial
/******************************************************************************* * Copyright 2017 Capital One Services, LLC and Bitwise, Inc. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * http://www.apache.org/licenses/LICENSE-2.0 * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *******************************************************************************/ package hydrograph.ui.propertywindow.widgets.gridwidgets.basic; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.swt.SWT; import org.eclipse.swt.dnd.DND; import org.eclipse.swt.dnd.DragSource; import org.eclipse.swt.dnd.DragSourceAdapter; import org.eclipse.swt.dnd.DragSourceEvent; import org.eclipse.swt.dnd.TextTransfer; import org.eclipse.swt.dnd.Transfer; import org.eclipse.swt.events.TraverseEvent; import org.eclipse.swt.events.TraverseListener; import org.eclipse.swt.graphics.Image; 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.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.TableItem; import org.eclipse.swt.widgets.Text; public class ELTSWTWidgets { public ELTSWTWidgets() { } public TableViewer createTableViewer(Composite composite, String[] prop, int[] bounds, int columnWidth, IStructuredContentProvider iStructuredContentProvider, ITableLabelProvider iTableLabelProvider) { final TableViewer tableViewer = new TableViewer(composite, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION | SWT.VIRTUAL); Table table = tableViewer.getTable(); table.setBounds(bounds[0], bounds[1], bounds[2], bounds[3]); tableViewer.setContentProvider(iStructuredContentProvider); tableViewer.setLabelProvider(iTableLabelProvider); tableViewer.setColumnProperties(prop); tableViewer.getTable().addTraverseListener(new TraverseListener() { @Override public void keyTraversed(TraverseEvent e) { if (e.keyCode == SWT.ARROW_UP) { e.doit = false; } else if (e.keyCode == SWT.ARROW_DOWN) { e.doit = false; } else if (e.keyCode == SWT.TRAVERSE_ARROW_NEXT) { e.doit = false; } else if (e.keyCode == SWT.TRAVERSE_ARROW_PREVIOUS) { e.doit = false; } } }); table.setVisible(true); table.setLinesVisible(true); table.setHeaderVisible(true); /* * createTableColumns(table,prop, columnWidth); CellEditor[] editors * =createCellEditorList(table,1); tableViewer.setCellEditors(editors); */ return tableViewer; } public void createTableColumns(Table table, String[] fields, int width) { for (String field : fields) { TableColumn tableColumn = new TableColumn(table, SWT.LEFT); tableColumn.setText(field); tableColumn.setWidth(width); // tableColumn.pack(); } table.setHeaderVisible(true); table.setLinesVisible(true); } public CellEditor[] createCellEditorList(Table table, int size) { CellEditor[] cellEditor = new CellEditor[size]; for (int i = 0; i < size; i++) addTextEditor(table, cellEditor, i); return cellEditor; } protected void addTextEditor(Table table, CellEditor[] cellEditor, int position) { cellEditor[position] = new TextCellEditor(table, SWT.COLOR_GREEN); } public Label labelWidget(Composite parent, int style, int[] bounds, String value, Image image) { Label label = new Label(parent, style); label.setBounds(bounds[0], bounds[1], bounds[2], bounds[3]); label.setText(value); label.setImage(image); return label; } public Button buttonWidget(Composite parent, int style, int[] bounds, String value) { Button button = new Button(parent, style); button.setBounds(bounds[0], bounds[1], bounds[2], bounds[3]); button.setText(value); return button; } public Text textBoxWidget(Composite parent, int style, int[] bounds, String text, boolean value) { Text textWidget = new Text(parent, style); textWidget.setBounds(bounds[0], bounds[1], bounds[2], bounds[3]); textWidget.setText(text); textWidget.setEditable(value); return textWidget; } public Combo comboWidget(Composite parent, int style, int[] bounds, String[] items, int selectionIndex) { Combo comboBox = new Combo(parent, style); comboBox.setBounds(bounds[0], bounds[1], bounds[2], bounds[3]); comboBox.setItems(items); comboBox.select(selectionIndex); return comboBox; } public void applyDragFromTableViewer(Control sourceControl, int index) { Transfer[] types = new Transfer[] { TextTransfer.getInstance() }; final String portLabel = "in" + index + "."; int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK; final Table table = (Table) sourceControl; DragSource source = new DragSource(table, operations); source.setTransfer(types); final String[] columnData = new String[1]; source.addDragListener(new DragSourceAdapter() { public void dragSetData(DragSourceEvent event) { // Set the data to be the first selected item's text event.data = addDelimeter(portLabel, table.getSelection()); } }); } private String addDelimeter(String portLabel, TableItem[] selectedTableItems) { StringBuffer buffer = new StringBuffer(); for (TableItem tableItem : selectedTableItems) { buffer.append(portLabel + tableItem.getText() + "#"); } return buffer.toString(); } }