CommonNavigator添加workingset

*CommonNavigator没有默认加入WorkingSet功能,但是提供了WorkingSetFilterActionGroup,它包含了所有需要的功能.

如下是代码示例,在导航器中加入工作集的基本过程

*添加WorkingSetFilterActionGroup到导航器,参考org.eclipse.ui.views.navigator.MainActionGroup

 /*
 * Copyright(C) 2011 Agree Tech, All rights reserved.
 * 
 * Created on 2011-2-18   by dzh
 */

package cn.com.agree.ide.common.navigator.view;

import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.actions.ActionContext;
import org.eclipse.ui.actions.WorkingSetFilterActionGroup;
import org.eclipse.ui.internal.navigator.CommonNavigatorActionGroup;
import org.eclipse.ui.navigator.CommonNavigator;
import org.eclipse.ui.navigator.CommonViewer;
import org.eclipse.ui.navigator.LinkHelperService;

public class AgreeIDECommonNavigatorActionGroup extends
		CommonNavigatorActionGroup {
	
	private WorkingSetFilterActionGroup workingSetGroup;

	public AgreeIDECommonNavigatorActionGroup(CommonNavigator aNavigator,
			CommonViewer aViewer, LinkHelperService linkHelperService) {
		super(aNavigator, aViewer, linkHelperService);
		makeSubGroups(aNavigator);
	}
	
	private void makeSubGroups(final CommonNavigator navigator){
		IPropertyChangeListener workingSetUpdater = new IPropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent event) {
                String property = event.getProperty();

                if (WorkingSetFilterActionGroup.CHANGE_WORKING_SET
                        .equals(property)) {
                    Object newValue = event.getNewValue();
                    
                    if (newValue instanceof IWorkingSet) {
                    	String workingSetName =((IWorkingSet) newValue).getName();
                    	navigator.setWorkingSetLabel(workingSetName); //refresh
                    } else{
                    	navigator.setWorkingSetLabel(null);
                    }
                }
            }
        };
		Shell shell =navigator.getCommonViewer().getControl().getShell();
		workingSetGroup =new WorkingSetFilterActionGroup(shell, workingSetUpdater); //WorkingSetFilterActionGroup
	}
	
	public void setContext(ActionContext context) {
		super.setContext(context);
		workingSetGroup.setContext(context);
    }
	
	protected void fillViewMenu(IMenuManager menu) {
		super.fillViewMenu(menu);
		workingSetGroup.fillContextMenu(menu); 
	}
	
	public void dispose() {
		super.dispose();
		workingSetGroup.dispose(); //dispose
	}

}

*刷新Tree

@Override
public void setWorkingSetLabel(String label) {
   	super.setWorkingSetLabel(label);
    	this.workingSetLabel =label;
    	getCommonViewer().refresh(); //refresh
}

@Override
public String getWorkingSetLabel() {
	if(workingSetLabel!=null)
		return workingSetLabel;
	return super.getWorkingSetLabel();
}

*ContentProvider中配置Resource是否隐藏,改动getElements().

	public Object[] getElements(Object element) {
		if (CategoryControl.getInstance().getCurrentValue()) {
			categoryProjectsMap.clear();
			Collection<CategoryModel> categoryModels = categories.values();
			processProjects(categoryModels);
			return categoryModels.toArray(new CategoryModel[0]);
		} else {
			updateWorkingSet(element); //working set
			
			for (ITreeConstructorProvider provider : constructors) {
				if (provider.isAcceptable(element)) {
					Object[] elements = provider.getContentProvider()
							.getElements(element);
					return elements == null ? new Object[0] : elements;
				}
			}
			
		}
		return super.getElements(element);
	}
	
	/**
	 * 
	 * <DL>
	 * <DT>标题.</DT>
	 * <p>
	 * <DD>详细介绍</DD>
	 * setHidden
	 * </DL>
	 * <p><B>
	 * 例子:
	 * </B><p><blockquote><pre>
	 * 例子内容
	 * </pre></blockquote><p>
	 * @param element
	 */
	private void updateWorkingSet(Object element){
		if(element!=null && element instanceof IWorkspaceRoot){
			try {
				IResource[] children =((IWorkspaceRoot) element).members(IContainer.INCLUDE_HIDDEN);
				List<IAdaptable> workingSetConent =getWorkingSetContent();
				for(IResource child:children){
					if(child.isHidden())
						child.setHidden(false);
				}
				if(workingSetConent!=null){
					for(IResource child:children){
						if(!workingSetConent.contains(child))
							child.setHidden(true);
					}
				}
			} catch (CoreException e) {
				e.printStackTrace();
			}
		}
	}
	
	
	/**
	 * 
	 * <DL>
	 * <DT>标题.</DT>
	 * <p>
	 * <DD>详细介绍</DD>
	 * 获取当前workingSet的内容
	 * </DL>
	 * <p><B>
	 * 例子:
	 * </B><p><blockquote><pre>
	 * 例子内容
	 * </pre></blockquote><p>
	 * @return null表示没有选择工作集,所有内容可见
	 */
	private List<IAdaptable> getWorkingSetContent(){
		IWorkbenchPart part =null;
		try{
			 part =PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();
		}catch(NullPointerException exception){
			return null;
		}
		
		if(part!=null && part instanceof CommonNavigator){
			IWorkingSet workingSet =PlatformUI.getWorkbench()
				.getWorkingSetManager().getWorkingSet(((CommonNavigator)part).getWorkingSetLabel());
			if(workingSet!=null){
				return Arrays.asList(workingSet.getElements());
			}
		}
		
		return null;
	}