Sample Code for a Part in Eclipse 4
As stated in my previous post, I have been playing with few obscure things of Eclipse Forms API, JFace and few utility classes to code less. Here is what I have done. For brevity, I am only enclosing the ViewPart code for Eclipse E4.
package com.amitinside.e4.rcp.todo.parts;
import javax.annotation.PostConstruct; import javax.inject.Inject;
import org.eclipse.core.databinding.observable.list.IListChangeListener; import org.eclipse.core.databinding.observable.list.IObservableList; import org.eclipse.core.databinding.observable.list.ListChangeEvent; import org.eclipse.core.databinding.observable.list.WritableList; import org.eclipse.e4.core.di.annotations.Optional; import org.eclipse.e4.ui.di.UIEventTopic; import org.eclipse.e4.ui.workbench.modeling.ESelectionService; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboBoxViewerCellEditor; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.forms.widgets.Section;
import com.amitinside.e4.rcp.todo.events.MyEventConstants; import com.amitinside.e4.rcp.todo.model.ITodoService; import com.amitinside.e4.rcp.todo.model.Todo;
import de.ralfebert.rcputils.random.RandomData; import de.ralfebert.rcputils.tables.TableViewerBuilder;
public final class SampleUIAdapat {
private final ITodoService service; private final ESelectionService selectionService; private TableViewerBuilder t; private final IObservableList<Todo> list; private final IListChangeListener listener = new IListChangeListener<Todo>() {
@Override public void handleListChange(ListChangeEvent<Todo> paramListChangeEvent) { updateViewer(); } };
@Inject public SampleUIAdapat(ITodoService service, ESelectionService selectionService) { this.service = service; this.selectionService = selectionService; list = new WritableList<Todo>(); }
@PostConstruct public void createControl(Composite parent) {
final FormToolkit toolkit = new FormToolkit(parent.getDisplay());
// Creating the Screen final Section section = toolkit.createSection(parent, Section.DESCRIPTION | Section.TITLE_BAR); section.setText("Section 1 for demonstration"); //$NON-NLS-1$ section.setDescription("This demonstrates the usage of section");
// Composite for storing the data final Composite client = toolkit.createComposite(section, SWT.WRAP);
t = new TableViewerBuilder(client);
t.createColumn("Summary").bindToProperty(Todo.FIELD_SUMMARY) .makeEditable().build();
t.createColumn("Description").makeEditable().setPixelWidth(300) .useAsDefaultSortColumn() .bindToProperty(Todo.FIELD_DESCRIPTION).build();
t.getTableViewer().addSelectionChangedListener( new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { final IStructuredSelection selection = (IStructuredSelection) t .getTableViewer().getSelection(); selectionService.setSelection(selection .getFirstElement()); } });
final ComboBoxViewerCellEditor cityComboEditor = new ComboBoxViewerCellEditor( t.getTable(), SWT.READ_ONLY); cityComboEditor.setContentProvider(ArrayContentProvider.getInstance()); cityComboEditor.setLabelProvider(new LabelProvider()); cityComboEditor.setInput(RandomData.CITIES);
t.createColumn("Notes").makeEditable(cityComboEditor) .bindToProperty(Todo.FIELD_NOTE).build();
toolkit.adapt(t.getTable(), true, true);
t.getTableViewer().setContentProvider( ArrayContentProvider.getInstance());
list.addAll(service.getTodos()); list.addListChangeListener(listener);
t.getTableViewer().setInput(list);
section.setClient(client);
}
private void updateViewer() { t.getTableViewer().refresh(); }
@Inject @Optional private void getNotified( @UIEventTopic(MyEventConstants.TOPIC_TODO_ALLTOPICS) Todo todo) { if (t.getTableViewer() != null) { list.clear(); list.addAll(service.getTodos()); } } }