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Java Source Code / Java Documentation » IDE Eclipse » ui workbench » org.eclipse.ui.progress

Source Cross Reference Class Diagram Java Document (Java Doc)

org.eclipse.ui.progress .IDeferredWorkbenchAdapter

IDeferredWorkbenchAdapter
public interface IDeferredWorkbenchAdapter extends IWorkbenchAdapter(Code)
	This adapter interface provides support for lazy initialization of UI workbench elements that are displayed visually. This adapter is used with an associated deferred content provider. See Also: DeferredTreeContentManager since: 3.0

Method Summary
public void	fetchDeferredChildren(Object object, IElementCollector collector, IProgressMonitor monitor) Called by a job run in a separate thread to fetch the children of this adapter. The adapter should in return notify of new children via the collector. This is generally used when a content provider is getting elements. It is good practice to check the passed in monitor for cancellation.
public ISchedulingRule	getRule(Object object) Returns the rule used to schedule the deferred fetching of children for this adapter. Parameters: object - the object whose children are being fetched the scheduling rule.
public boolean	isContainer() Returns whether this adapter may have children.

Method Detail

fetchDeferredChildren
public void fetchDeferredChildren(Object object, IElementCollector collector, IProgressMonitor monitor)(Code)
	Called by a job run in a separate thread to fetch the children of this adapter. The adapter should in return notify of new children via the collector. This is generally used when a content provider is getting elements. It is good practice to check the passed in monitor for cancellation. This will provide good responsiveness for cancellation requests made by the user. Parameters: object - the object to fetch the children for Parameters: collector - the collector to notify about new children. Should notbe `null`. Parameters: monitor - a progress monitor that will never be `null tosupport reporting and cancellation.`

getRule
public ISchedulingRule getRule(Object object)(Code)
	Returns the rule used to schedule the deferred fetching of children for this adapter. Parameters: object - the object whose children are being fetched the scheduling rule. May be `null`. See Also: org.eclipse.core.runtime.jobs.Job.setRule(ISchedulingRule)

isContainer

public boolean isContainer()(Code)

Returns whether this adapter may have children. This is an optimized method used by content providers to allow showing the [+] expand icon without having yet fetched the children for the element.

If false is returned, then the content provider may assume that this adapter has no children. If true is returned, then the job manager may assume that this adapter may have children.

trueif the adapter may have childen, and falseotherwise.

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