import org.eclipse.ui.part.IPage; //导入依赖的package包/类
@Override
public Object getAdapter(Class key) {
	if (key.equals(IContextProvider.class)) {
		return new ContextProvider(ID);
	}

	if (key.equals(TreeViewer.class)) {
		IPage page = this.getCurrentPage();
		if (page instanceof PlanAdvisorPage) {
			PlanAdvisorPage planAdvisorPage = (PlanAdvisorPage) page;
			return planAdvisorPage.getPlanAdvisorTreeViewer();
		}

		else {
			return null;
		}
	}
	return super.getAdapter(key);
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
public static IConsole getConsole(IWorkbenchPart part) {
      if(!(part instanceof IViewPart)){
          return null;
      }

      IViewPart vp =(IViewPart) part;
      if (vp instanceof PageBookView) {
          IPage page = ((PageBookView) vp).getCurrentPage();
          ITextViewer viewer = getViewer(page);
          if (viewer == null || viewer.getDocument() == null)
          	return null;
      }

      IConsole con = null;
  	try {
  		con = ((IConsoleView)part).getConsole();
  	} catch (Exception e) {

}

return con;
  }
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
public static ITextViewer getViewer(IPage page) {
    if(page == null){
        return null;
    }
    if(page instanceof TextConsolePage) {
        return ((TextConsolePage)page).getViewer();
    }
    if(page.getClass().equals(MessagePage.class)){
        // empty page placeholder
        return null;
    }
    try {
        /*
         * org.eclipse.cdt.internal.ui.buildconsole.BuildConsolePage does not
         * extend TextConsolePage, so we get access to the viewer with dirty tricks
         */
        Method method = page.getClass().getDeclaredMethod("getViewer", (Class<?>[])null);
        method.setAccessible(true);
        return (ITextViewer) method.invoke(page, (Object[])null);
    } catch (Exception e) {
        // AnyEditToolsPlugin.logError("Can't get page viewer from the console page", e);
    }
    return null;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
public Object execute(ExecutionEvent event) throws ExecutionException
{
	// assumes to expand to level 1 if not specified
	int level = 1;
	String levelStr = event.getParameter(LEVEL);
	if (levelStr != null)
	{
		level = Integer.parseInt(levelStr);
	}

	IWorkbenchPart part = HandlerUtil.getActivePart(event);
	if (part instanceof ContentOutline)
	{
		IPage page = ((ContentOutline) part).getCurrentPage();
		if (page instanceof CommonOutlinePage)
		{
			CommonOutlinePage outlinePage = (CommonOutlinePage) page;
			// we want to expand to the specified level and collapse everything below
			outlinePage.collapseAll();
			outlinePage.expandToLevel(level);
		}
	}
	return null;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
@Override
protected void pageActivated(IPage page) {
    if (page instanceof ConstraintsPage) {
    	ConstraintsPage constraintsPage = (ConstraintsPage)page;
    	final EPlan plan = constraintsPage.getPlan();
		WidgetUtils.runInDisplayThread(page.getControl(), new Runnable() {
			@Override
			public void run() {
				String planName = plan.getName();
				if(planName == null) {
					planName = "";
				}
				setContentDescription(planName);
			}
		});
    } else {
		setContentDescription("");
	}
   }
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public boolean isSaveOnCloseNeeded() {
	// workaround for SPF-6678 "Dirty bit is only set when focus is removed from field in Template View, Details View "
	IWorkbenchPartSite site = getSite();
	if (site != null) {
		IWorkbenchPage page = site.getPage();
		IViewReference[] viewReferences = page.getViewReferences();
		for (IViewReference iViewReference : viewReferences) {
			IViewPart viewPart = iViewReference.getView(false);
			if(viewPart != null) {
				Object adapter = viewPart.getAdapter(IPage.class);
				if(adapter instanceof DetailPage) {
					DetailPage detailPage = (DetailPage) adapter;
					if(detailPage.hasSheet()) {
						this.setFocus();
						break;
					}
				}
			}	
		}			
	}
	// end workaround
	return super.isSaveOnCloseNeeded();
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
private ISelection getSelection(IWorkbenchPart part, ISelection selection) {
	// for some reason, selection is empty when we select a revision from the P4 history view
	if (!(part instanceof PageBookView)) {
		return selection;
	}
	IPage page = ((PageBookView)part).getCurrentPage();
	if (!(page instanceof P4HistoryPage)) {
		return selection;
	}
	return getSelection((P4HistoryPage)page);
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
@Override
protected IPage createDefaultPage(PageBook book)
{
	MessagePage defaultPage = new MessagePage();
	initPage(defaultPage);
	defaultPage.setMessage(m_defaultMsg);
	defaultPage.createControl(book);
	setPartName(m_defaultTitle);
	return defaultPage;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
@Override
protected IPage createDefaultPage(PageBook book) {
	ReportStatePage page = new ReportStatePage(null);
	initPage(page);
	page.createControl(book);
	return page;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
protected void hijackConsole(IViewPart view)
{
	if (view instanceof ConsoleView)
	{
		IPage currentPage = ((ConsoleView) view).getCurrentPage();
		if (currentPage != null)
		{
			hookTheme(currentPage.getControl(), false);
		}
	}
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
public Object execute(ExecutionEvent event) throws ExecutionException
{
	IWorkbenchPart part = HandlerUtil.getActivePart(event);
	if (part instanceof ContentOutline)
	{
		IPage page = ((ContentOutline) part).getCurrentPage();
		if (page instanceof CommonOutlinePage)
		{
			((CommonOutlinePage) page).collapseAll();
		}
	}
	return null;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
public Object execute(ExecutionEvent event) throws ExecutionException
{
	IWorkbenchPart part = HandlerUtil.getActivePart(event);
	if (part instanceof ContentOutline)
	{
		IPage page = ((ContentOutline) part).getCurrentPage();
		if (page instanceof CommonOutlinePage)
		{
			((CommonOutlinePage) page).expandAll();
		}
	}
	return null;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
@Override
protected void pageActivated(IPage page) {
	if (page instanceof PlanAdvisorPage) {
		PlanAdvisorPage planAdvisorPage = (PlanAdvisorPage) page;
		EPlan plan = planAdvisorPage.getPlan();
		PlanAdvisorMember planAdvisorMember = PlanAdvisorMember.get(plan);
		viewIconListener.setPlanAdvisorMember(planAdvisorMember);
	} else {
		viewIconListener.setPlanAdvisorMember(null);
	}
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
protected IPage createDefaultPage(PageBook book) {
	MessagePage page = new MessagePage();
	initPage(page);
	page.createControl(book);
	page.setMessage("default page");
	return page;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
private DetailPage getCurrentDetailPage(IWorkbenchPage page) {
	DetailView detailView = DetailView.getDetailView(page);
	if (detailView != null) {
		IPage currentPage = detailView.getCurrentPage();
		if (currentPage instanceof DetailPage)
			return (DetailPage)currentPage;
	}
	return null;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
@Override
protected IPage createDefaultPage(PageBook book) {
       IPage page = super.createDefaultPage(book);
       if (page instanceof MessagePage) {
           ((MessagePage)page).setMessage("Nothing currently selected.");
       }
       return page;
   }
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
private SPIFeTemplatePlanPage getCurrentPage() {
	IPage currentPage = templatePlanView.getCurrentPage();
	if (currentPage instanceof SPIFeTemplatePlanPage) {
		return (SPIFeTemplatePlanPage)currentPage;
	}
	return null;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
/**
 * Creates, initializes and returns the default page for this view, giving it the default
 * message. Implements the abstract method from Eclipse class PageBookView.
 * @param book the PageBook control that will become the parent of the new page
 * @return the newly-created page
 */
@Override
protected IPage createDefaultPage(PageBook book) {
   	MessagePage page = new MessagePage();
	initPage(page);
	page.createControl(book);
	page.setMessage(defaultMessage);
       return page;
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
/**
 * If the argument is not null, prefix the call to the superclass by performing the
 * pre-open operation. This operation can be supplied by the concrete subclass.
 * @param pageRec the page being opened
 */
@Override
protected void showPageRec(PageRec pageRec) {
	if (pageRec != null) {
		IPage page = pageRec.page;
		pageActivated(page);
	}
	super.showPageRec(pageRec);
}
 

import org.eclipse.ui.part.IPage; //导入依赖的package包/类
/**
 * Return the current page's plan.
 * @return the page's plan; may be null if the current page is not a TemplatePlanPage or
 * if the page has no plan
 */
public EPlan getCurrentTemplatePlan() {
	IPage currentPage = getCurrentPage();
	EPlan plan = null;
	if(currentPage instanceof TemplatePlanPage) {
		TemplatePlanPage templatePlanPage = (TemplatePlanPage)currentPage;
		plan = templatePlanPage.getTemplatePlan();
	}
	
	return plan;
}