[news.eclipse.tools] Re: View instances across different pages/workspace

[david_springgay@xxxxxxx (David Springgay)]

Cheng-Yee Lin wrote:

> When there are multiple pages (workspaces in the December release) opened
> with default perspecives, the user can see navigator, properties, tasks,
> and outline views on all those pages.

> From each individual view, how many instances are there for those pages?
> Is it a single instance shared by all the pages?  Or, are there multiple
> instances and each page contains one instance?  How is this being
> handled in Eclipse?  As a client of the Eclipse, what do we need to do
> to produce the consistent behavior with these views?

The following information was taken directly from the latest javadoc for
IWorkbenchPage ..

A workbench page consists of an arrangement of views and editors intended
to be presented together to the user in a single workbench window. 

A page can contain 0 or more views and 0 or more editors. These views and
editors are contained wholly within the page and are not shared with other
pages.  The layout and visible action set for the page is defined by a
perspective.

The number of views and editors within a page is restricted to simplify
part management for the user.  In particular:

* Only one instance of a particular view type may exist within a workbench
page.
* Only one editor can exist for each editor input within a page.<li>

If your view appears within a page it will be disposed when the page is
disposed.