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Switch workspace question [message #460127]

Thu, 14 December 2006 09:08

Eclipse User

Originally posted by: janky.hot.ee

Hi,
i'm trying to implement the switch workspace action. So my question is
how and when i could change to directory i get with
Platform.getInstanceLocation()?

I don't want to add the org.eclipse.ui.ide library to my applicatin.
I'd be very appreciated if someone could guide or link me to right place.

Re: Switch workspace question [message #460128 is a reply to message #460127]

Thu, 14 December 2006 09:38

Eclipse User

Re: Switch workspace question [message #460130 is a reply to message #460128]

Thu, 14 December 2006 09:48

Eclipse User

Originally posted by: janky.hot.ee

If i do the the first example then i get an exception
java.lang.IllegalStateException: Cannot change the location once it is
set. So the following code is not OK, or it's not possible to do this way???

public Object run(Object args) throws Exception {
URL newLoc = new File("H:/newworkspace/").toURL();
Platform.getInstanceLocation().setURL(newLoc, false);

Display display = PlatformUI.createDisplay();

try {
int returnCode = PlatformUI.createAndRunWorkbench(display, new
ApplicationWorkbenchAdvisor());
if (returnCode == PlatformUI.RETURN_RESTART) {
return IPlatformRunnable.EXIT_RESTART;
}
return IPlatformRunnable.EXIT_OK;
} finally {
display.dispose();
}
}

Michael Spector wrote:
> VJ wrote:
>
>> Hi,
>> i'm trying to implement the switch workspace action. So my question is
>> how and when i could change to directory i get with
>> Platform.getInstanceLocation()?
>>
>> I don't want to add the org.eclipse.ui.ide library to my applicatin.
>> I'd be very appreciated if someone could guide or link me to right place.
>
> Workspace location can be either set in your Application.run() method, by
> calling Platform.getInstanceLocation().setURL(), or by restarting Eclipse
> instance with substituted command line arguments, like they do in
> OpenWorkspaceAction
> ( http://www.koders.com/java/fid5F6054C787BB6E91B1813280EC757F 57AB0E6613.aspx).
>

Re: Switch workspace question [message #460131 is a reply to message #460127]

Thu, 14 December 2006 09:51

Eclipse User

VJ wrote:
> Hi,
> i'm trying to implement the switch workspace action. So my question is
> how and when i could change to directory i get with
> Platform.getInstanceLocation()?
>
> I don't want to add the org.eclipse.ui.ide library to my applicatin.
> I'd be very appreciated if someone could guide or link me to right place.

When: It must be done, *before* PlatformUI.createAndRunWorkbench has
been called, so the latest point is inside your IPlatformRunnable.run
implementation just before you call PlatformUI.createAndRunWorkbench.

How: Have a look at org\eclipse\ui\internal\ide\IDEApplication.java
from the org.eclipse.ui.ide plugin.

Basically you need a sequence similar to:

File fUserWorkspace = ... // your workspace

final Location instanceLoc = Platform.getInstanceLocation();
if (instanceLoc == null) {
.. //error
}

// Note: Don't use File.toURL()!
String path = fUserWorkspace.getAbsolutePath().replace(
File.separatorChar, '/');
URL userWSURL = new URL("file", null, path);

if (instanceLoc.isSet()) {
if (!userWSURL.sameFile(instanceLoc.getURL())) {
... // error
}
} else {
if (!fUserWorkspace.exists()) {
if (!fUserWorkspace.mkdirs()) {
... // error
}
}

// You can use another locking policy as well:
final boolean doLock = false;

if (!instanceLoc.setURL(userWSURL, doLock) == doLock) {
... // error
}
}

Greetings from Bremen,

Daniel Krügler

Re: Switch workspace question [message #460133 is a reply to message #460130]

Thu, 14 December 2006 09:58

Eclipse User

VJ wrote:

> If i do the the first example then i get an exception
> java.lang.IllegalStateException: Cannot change the location once it is
> set. So the following code is not OK, or it's not possible to do this
> way???
>

Have a look at the IDEApplication class, you'll find how they do it exactly.

--
With best regards, Michael Spector

Re: Switch workspace question [message #460148 is a reply to message #460133]

Fri, 15 December 2006 02:55

Eclipse User

Originally posted by: janky.hot.ee

Michael Spector wrote:
> VJ wrote:
>
>> If i do the the first example then i get an exception
>> java.lang.IllegalStateException: Cannot change the location once it is
>> set. So the following code is not OK, or it's not possible to do this
>> way???
>>
>
> Have a look at the IDEApplication class, you'll find how they do it exactly.
>

thx all of you, classes IDEApplication and OpenWorkspaceAction were
quite useful to study.

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