editable table sample 1

編集可能なテーブルのサンプル

import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ColumnPixelData;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableLayout;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;

public class ColumnLabelProviderDemonstrate extends ApplicationWindow {

	// ------------------ //
	// instance variables //
	// ------------------ //
	
	// Model( of MVC) input
	private final Commodity[] input = new Commodity[] {
			new Commodity("monitor", 99.8),
			new Commodity("key board", 8.4),
			new Commodity("mouth", 4.8)
	};

	private TableViewer commodityTableViewer;
	
	
	// -------------------- //
	// constructor and main //
	// -------------------- //
	private ColumnLabelProviderDemonstrate() {
		super(null);
	}
	
	public static void main(String[] args) {
		Window w = new ColumnLabelProviderDemonstrate();
		w.setBlockOnOpen(true);
		w.open();
		Display.getCurrent().dispose();
	}
	
	
	// ----------------------- //
	// contents create methods //
	// ----------------------- //
	
	@Override
	protected Control createContents(Composite parent) {
		
		Composite composite = new Composite(parent, SWT.NONE);
		FillLayout fillLayout = new FillLayout();
		composite.setLayout(fillLayout);
		
		createCommodityTableViewer(composite);
		commodityTableViewer.setInput(input);
		
		composite.pack();
		parent.pack();
		return parent;
	}
	
	protected TableViewer createCommodityTableViewer(Composite parent) {
		commodityTableViewer = new TableViewer(parent, SWT.FULL_SELECTION);
		
		Table commodityTable = (Table)commodityTableViewer.getControl();
		
		TableLayout tableLayout = new TableLayout();
		tableLayout.addColumnData(new ColumnPixelData(150));
		tableLayout.addColumnData(new ColumnPixelData(100));
		commodityTable.setLayout(tableLayout);
		
		commodityTableViewer.setContentProvider(new IStructuredContentProvider() {
			@Override
			public Object[] getElements(Object inputElement) {
				return (Commodity[])inputElement;
			}
			
			@Override
			public void dispose() {
				
			}
			
			@Override
			public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
				
			}
		});
		
		createNameColumn();
		createPriceColumn();
		
		commodityTable.setHeaderVisible(true);
		
		return commodityTableViewer;
	}
	
	protected void createNameColumn() {
		TableViewerColumn vNameColumn = new TableViewerColumn(commodityTableViewer, SWT.LEFT);
		TableColumn nameColumn = vNameColumn.getColumn();
		nameColumn.setText("Commodity Name");
		
		vNameColumn.setLabelProvider(new ColumnLabelProvider() {
			public String getText(Object element) {
				return ((Commodity)element).name;
			}
		});
		
		vNameColumn.setEditingSupport(new EditingSupport(commodityTableViewer) {
			@Override
			protected boolean canEdit(Object element) {
				return true;
			}
			
			@Override
			protected CellEditor getCellEditor(Object element) {
				return new TextCellEditor((Table)commodityTableViewer.getControl());
			}
			
			@Override
			protected Object getValue(Object element) {
				return ((Commodity)element).name;
			}
			
			@Override
			protected void setValue(Object element, Object value) {
				((Commodity)element).name = (String)value;
				commodityTableViewer.refresh();
			}
		});
	}
	
	protected void createPriceColumn() {
		TableViewerColumn vPriceColumn = new TableViewerColumn(commodityTableViewer, SWT.RIGHT);
		TableColumn priceColumn = vPriceColumn.getColumn();
		priceColumn.setText("Price");
		
		vPriceColumn.setLabelProvider(new ColumnLabelProvider() {
			@Override
			public String getText(Object element) {
				return "$" + ((Commodity)element).price;
			}
		});
		
		vPriceColumn.setEditingSupport(new EditingSupport(commodityTableViewer) {
			@Override
			protected boolean canEdit(Object element) {
				return true;
			}
			
			@Override
			protected CellEditor getCellEditor(Object element) {
				TextCellEditor textCellEditor = new TextCellEditor((Table)commodityTableViewer.getControl());
				
				return textCellEditor;
			}
			
			@Override
			protected Object getValue(Object element) {
				return String.valueOf(((Commodity)element).price);
			}
			
			@Override
			protected void setValue(Object element, Object value) {
				try {
					double doubleValue = Double.valueOf((String)value);
					((Commodity)element).price = doubleValue;
					commodityTableViewer.refresh();
				} catch (NumberFormatException e) {
					return;
				}
			}
		});
	}
	
	// ------------ //
	// Model of MVC //
	// ------------ //
	private class Commodity {
		public String name;
		public double price;
		
		public Commodity(String name, double price) {
			this.name = name;
			this.price = price;
		}
	}
}