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package org.eclipse.net4j.ui.views;
import org.eclipse.net4j.ITransportContainer;
import org.eclipse.net4j.internal.ui.SharedIcons;
import org.eclipse.net4j.ui.actions.SafeAction;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.part.ISetSelectionTarget;
import org.eclipse.ui.part.ViewPart;
public abstract class ContainerView extends ViewPart implements ISetSelectionTarget
{
private ContainerItemProvider itemProvider;
private TreeViewer viewer;
private ISelectionChangedListener selectionListener = new ISelectionChangedListener()
{
public void selectionChanged(SelectionChangedEvent event)
{
ITreeSelection selection = (ITreeSelection)event.getSelection();
IActionBars bars = getViewSite().getActionBars();
ContainerView.this.selectionChanged(bars, selection);
}
};
private Action refreshAction = new RefreshAction();
public ContainerView()
{
}
@Override
public void setFocus()
{
viewer.getControl().setFocus();
}
public void selectReveal(ISelection selection)
{
viewer.setSelection(selection, true);
}
@Override
public void createPartControl(Composite parent)
{
itemProvider = createContainerItemProvider();
viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
viewer.setContentProvider(itemProvider);
viewer.setLabelProvider(itemProvider);
viewer.setSorter(new ContainerNameSorter());
viewer.setInput(getContainer());
viewer.addSelectionChangedListener(selectionListener);
getSite().setSelectionProvider(viewer);
hookContextMenu();
hookDoubleClick();
contributeToActionBars();
}
protected ContainerItemProvider createContainerItemProvider()
{
return new ContainerItemProvider(getRootElementFilter())
{
@Override
public Image getImage(Object obj)
{
Image image = getElementImage(obj);
if (image == null)
{
image = super.getImage(obj);
}
return image;
}
@Override
public String getText(Object obj)
{
String text = getElementText(obj);
if (text == null)
{
text = super.getText(obj);
}
return text;
}
};
}
protected String getElementText(Object element)
{
return null;
}
protected Image getElementImage(Object element)
{
return null;
}
protected IElementFilter getRootElementFilter()
{
return null;
}
protected abstract ITransportContainer getContainer();
protected void hookDoubleClick()
{
viewer.addDoubleClickListener(new IDoubleClickListener()
{
public void doubleClick(DoubleClickEvent event)
{
ITreeSelection selection = (ITreeSelection)viewer.getSelection();
Object object = selection.getFirstElement();
doubleClicked(object);
}
});
}
protected void hookContextMenu()
{
MenuManager menuMgr = new MenuManager("#PopupMenu");
menuMgr.setRemoveAllWhenShown(true);
menuMgr.addMenuListener(new IMenuListener()
{
public void menuAboutToShow(IMenuManager manager)
{
ITreeSelection selection = (ITreeSelection)viewer.getSelection();
fillContextMenu(manager, selection);
}
});
Menu menu = menuMgr.createContextMenu(viewer.getControl());
viewer.getControl().setMenu(menu);
getSite().registerContextMenu(menuMgr, viewer);
}
protected void contributeToActionBars()
{
IActionBars bars = getViewSite().getActionBars();
fillLocalPullDown(bars.getMenuManager());
fillLocalToolBar(bars.getToolBarManager());
}
protected void fillLocalPullDown(IMenuManager manager)
{
manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
manager.add(refreshAction);
}
protected void fillLocalToolBar(IToolBarManager manager)
{
manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
}
protected void fillContextMenu(IMenuManager manager, ITreeSelection selection)
{
itemProvider.fillContextMenu(manager, selection);
manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
}
protected void selectionChanged(IActionBars bars, ITreeSelection selection)
{
}
protected void doubleClicked(Object object)
{
if (object != null && viewer.isExpandable(object))
{
if (viewer.getExpandedState(object))
{
viewer.collapseToLevel(object, TreeViewer.ALL_LEVELS);
}
else
{
viewer.expandToLevel(object, 1);
}
}
}
protected void showMessage(String message)
{
showMessage(MessageType.INFORMATION, message);
}
protected boolean showMessage(MessageType type, String message)
{
switch (type)
{
case INFORMATION:
MessageDialog.openInformation(viewer.getControl().getShell(), getTitle(), message);
return true;
case ERROR:
MessageDialog.openError(viewer.getControl().getShell(), getTitle(), message);
return true;
case WARNING:
MessageDialog.openWarning(viewer.getControl().getShell(), getTitle(), message);
return true;
case CONFIRM:
return MessageDialog.openConfirm(viewer.getControl().getShell(), getTitle(), message);
case QUESTION:
return MessageDialog.openQuestion(viewer.getControl().getShell(), getTitle(), message);
default:
return true;
}
}
public static ImageDescriptor getAddImageDescriptor()
{
return SharedIcons.getDescriptor(SharedIcons.ETOOL_ADD);
}
public static ImageDescriptor getDeleteImageDescriptor()
{
return SharedIcons.getDescriptor(SharedIcons.ETOOL_DELETE);
}
public static ImageDescriptor getRefreshImageDescriptor()
{
return SharedIcons.getDescriptor(SharedIcons.ETOOL_REFRESH);
}
protected static enum MessageType
{
INFORMATION, ERROR, WARNING, CONFIRM, QUESTION
}
/**
* @author Eike Stepper
*/
private final class RefreshAction extends SafeAction
{
private RefreshAction()
{
super("Refresh", "Refresh view", getRefreshImageDescriptor());
}
@Override
protected void doRun() throws Exception
{
viewer.refresh(false);
}
}
}
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