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A widget token keeper may require a widget token from an
IWidgetTokenOwner
and release the token to the
owner after usage. A widget token owner may request the token from the token
keeper. The keeper may deny the return of the token.
The widget token owner and keeper interplay is used by a text viewer in
order to manage the appearance and disappearance of addition, on-top popup
windows such as text hovers, content assist, etc.
In order to provide backward compatibility for clients of
IWidgetTokeKeeper
, extension interfaces are used as a means
of evolution. The following extension interfaces exist:
IWidgetTokenKeeperExtension
since version
3.0 introducing priorities when requesting a widget token and thus replacing
the unprioritized scheme. It also allows a client to force a widget token
keeper to accept focus.
IWidgetTokenKeeperExtension
Method Summary | |
---|---|
boolean |
requestWidgetToken(IWidgetTokenOwner owner)
The given widget token owner requests the widget token from this token keeper. |
Method Detail |
public boolean requestWidgetToken(IWidgetTokenOwner owner)
true
if the token is released by this
token keeper. Note, the keeper must not call
releaseWidgetToken(IWidgetTokenKeeper)
explicitly.
Replaced by
IWidgetTokenKeeperExtension.requestWidgetToken(IWidgetTokenOwner, int)
.
owner
- the token owner
true
if token has been released false
otherwise
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Guidelines for using Eclipse APIs.
Copyright (c) IBM Corp. and others 2000, 2005. All rights reserved.