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());
}
}
}
