几个常用的监听器
为表格或列表查看器添加选择更改监听器
org.eclipse.jface.viewers
Interface ISelectionChangedListener
A listener which is notified when a viewer's selection changes.
要实现的方法
void selectionChanged(SelectionChangedEvent event)
事件类
org.eclipse.jface.viewers.SelectionChangedEvent
有个方法：
public ISelection getSelection()
Returns the selection.
public interface IStructuredSelection
extends ISelection
有个方法：
Object getFirstElement()
Returns the first element in this selection, or null if the selection is empty.
Iterator iterator()
Returns an iterator over the elements of this selection.
int size()
Returns the number of elements selected in this selection.
Object[] toArray()
Returns the elements in this selection as an array.
List toList()
Returns the elements in this selection as a List.
设置状态栏的方法：
IStatusLineManager statusline = getViewSite().getActionBars().getStatusLineManager();
statusline.setMessage("")
相关方法：
1.
org.eclipse.jface.action
public interface IStatusLineManager
extends IContributionManager
The IStatusLineManager interface provides protocol for displaying messages on a status line, for monitoring progress, and for managing contributions to the
status line.
相关方法：
void setMessage(Image image, String message)
Sets the image and message to be displayed on the status line.
void setMessage(String message)
2.
org.eclipse.ui
public interface IActionBars
Used by a part to access its menu, toolbar, and status line managers.
相关方法：
IMenuManager getMenuManager()
Returns the menu manager.
IStatusLineManager getStatusLineManager()
Returns the status line manager.
IToolBarManager getToolBarManager()
Returns the tool bar manager.
3.
org.eclipse.ui
public interface IViewSite
extends IWorkbenchPartSite
The primary interface between a view part and the workbench.
相关方法：
IActionBars getActionBars()
Returns the action bars for this part site.