Java tutorial
/* * Copyright IBM Corp. 2015, 2016 * * 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 com.ibm.xsp.extlib.designer.bluemix.manifest.editor; import java.util.ArrayList; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ICellModifier; import org.eclipse.jface.viewers.IDoubleClickListener; 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.TextCellEditor; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.TableItem; import com.ibm.commons.swt.controls.custom.CustomTable; import com.ibm.commons.swt.controls.custom.CustomTableColumn; import com.ibm.commons.util.StringUtil; import com.ibm.xsp.extlib.designer.bluemix.util.BluemixUtil; /** * @author Gary Marjoram * */ public class ManifestTableEditor { private final TableViewer _tableViewer; private final CustomTable _table; private final CellEditorCallback _callback; private final boolean _editable; public ManifestTableEditor(Composite parent, int span, String[] colNames, String[] colLabels, boolean header, boolean lines, int rows, int width, String tableId, ArrayList<EditTableItem> input, boolean editable, CellEditorCallback callback, SelectionListener selListener, IDoubleClickListener doubleClickListener) { _callback = callback; _editable = editable; // Create the table _table = new CustomTable(parent, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.FULL_SELECTION, tableId); if (selListener != null) { _table.addSelectionListener(selListener); } GridData gd = new GridData(SWT.FILL, SWT.BEGINNING, true, false); gd.horizontalSpan = span; _table.setLayoutData(gd); _table.setLinesVisible(lines); _table.setHeaderVisible(header); _table.setRows(rows); _table.setCols(width); // Create the columns int numCols = colNames.length; for (int i = 0; i < numCols; i++) { String colLabel = colLabels[i]; String colName = colNames[i]; CustomTableColumn col = new CustomTableColumn(_table, SWT.NONE, tableId + "." + colName); col.setText(colLabel); if (i == numCols - 1) { col.setWidthUnit(CustomTableColumn.UNIT_REMAINDER); } else { col.setWidthUnit(CustomTableColumn.UNIT_PERCENT); col.setColWidth(100 / numCols); } } // Create the Table Viewer _tableViewer = new TableViewer(_table); if (doubleClickListener != null) { _tableViewer.addDoubleClickListener(doubleClickListener); } // Create the Label Provider _tableViewer.setLabelProvider(new ITableLabelProvider() { @Override public void addListener(ILabelProviderListener arg0) { } @Override public void dispose() { } @Override public boolean isLabelProperty(Object arg0, String arg1) { return false; } @Override public void removeListener(ILabelProviderListener arg0) { } @Override public Image getColumnImage(Object arg0, int arg1) { return null; } @Override public String getColumnText(Object obj, int col) { if (obj instanceof EditTableItem) { return ((EditTableItem) obj).getColumn(col); } return null; } }); // Create the content provider _tableViewer.setContentProvider(new IStructuredContentProvider() { @Override public void dispose() { } @Override public void inputChanged(Viewer arg0, Object arg1, Object arg2) { } @SuppressWarnings("unchecked") // $NON-NLS-1$ @Override public Object[] getElements(Object input) { return ((ArrayList<EditTableItem>) input).toArray(); } }); // In Cell Editing _tableViewer.setCellModifier(new ICellModifier() { @Override public boolean canModify(Object element, String property) { return _editable; } @Override public Object getValue(Object element, String property) { if (element instanceof EditTableItem) { return ((EditTableItem) element).getValue(property); } return ""; } @Override public void modify(Object element, String property, Object value) { if (element != null) { if (element instanceof TableItem) { Object data = ((TableItem) element).getData(); if (data instanceof EditTableItem) { EditTableItem item = (EditTableItem) data; if (!StringUtil.equals(item.getValue(property), (String) value)) { item.setValue(property, (String) value); _tableViewer.refresh(); if (_callback != null) { _callback.contentsChanged(((CustomTable) _tableViewer.getTable()).getId()); } } } } } } }); _tableViewer.setCellEditors(new CellEditor[] { new TextCellEditor(_tableViewer.getTable()), new TextCellEditor(_tableViewer.getTable()) }); _tableViewer.setColumnProperties(colNames); _tableViewer.setInput(input); } public void refresh() { _tableViewer.refresh(); } @SuppressWarnings("unchecked") // $NON-NLS-1$ public void createItem(EditTableItem item) { ((ArrayList<EditTableItem>) _tableViewer.getInput()).add(item); _tableViewer.refresh(); _tableViewer.getTable().select(((ArrayList<EditTableItem>) _tableViewer.getInput()).size() - 1); _tableViewer.getTable().showSelection(); if (_callback != null) { _callback.contentsChanged(((CustomTable) _tableViewer.getTable()).getId()); } } @SuppressWarnings("unchecked") // $NON-NLS-1$ public void deleteItem() { int selIndex = _tableViewer.getTable().getSelectionIndex(); if (selIndex >= 0) { if (MessageDialog.openQuestion(null, BluemixUtil.productizeString("%BM_PRODUCT%"), "Are you sure you want to delete this item?")) { // $NON-NLS-1$ $NLX-ManifestTableEditor.Areyousureyouwanttodeletethisitem-2$ ((ArrayList<EditTableItem>) _tableViewer.getInput()).remove(selIndex); _tableViewer.refresh(); if (_callback != null) { _callback.contentsChanged(((CustomTable) _tableViewer.getTable()).getId()); } } } } public Object getLayoutData() { return _table.getLayoutData(); } public int getSelectedRow() { return _table.getSelectionIndex(); } public CustomTable getTable() { return _table; } public static abstract class EditTableItem { public abstract String getColumn(int col); public abstract String getValue(String item); public abstract void setValue(String item, String value); } public interface CellEditorCallback { public void contentsChanged(String controlId); } }