Eclipse Community Forums: Rich Client Platform (RCP) » any way to hook the EditorManager on app startup?

Home » Eclipse Projects » Rich Client Platform (RCP) » any way to hook the EditorManager on app startup?

any way to hook the EditorManager on app startup? [message #458807]

Fri, 24 November 2006 16:03

Eclipse User

R3.2.1, WinXP

My RCP app starts up, restores the workbench sites, thus calling the EditorManager.restoreState()
which calls my editor-part's init() method N times; then later on the WorkbenchAdvisor.startup()
method gets called.

Problem is, my editors require that a certain data-model (a kind of type-system) be initialized in
order for the editors to display correctly. (Init'g the type-system requires reading some files from
disk, but no UI work.)

So, in the init()-method, I lazily create that type-system; this works.

But it seems to me that there should be some way to ensure that it is initialized from "startup"
code, which in this case would be, I guess, the EditorManager (since it is run *before* my
WorkbenchAdvisor.startup() ...).

Is there any way to "hook" that EditorManager, so that I can do this init'n once? Or is it possible
to get the type-system inti'n to be done *before* the EditorManager runs, by specifying (something)?
(Prior attempts with "early startup" did not seem to work, since it was not "early enough", but I
may have done something wrongly.)

thanks,
Paul

Re: any way to hook the EditorManager on app startup? [message #458832 is a reply to message #458807]

Mon, 27 November 2006 04:19

Eclipse User

Originally posted by: remy.suen.gmail.com

Paul Keyser wrote:
> Is there any way to "hook" that EditorManager, so that I can do this
> init'n once? Or is it possible to get the type-system inti'n to be done
> *before* the EditorManager runs, by specifying (something)? (Prior
> attempts with "early startup" did not seem to work, since it was not
> "early enough", but I may have done something wrongly.)

Does the org.eclipse.ui.startup extension point work or was that what
you were trying to do with regards to your "early startup" attempt?

Regards,
Rem

Re: any way to hook the EditorManager on app startup? [message #459004 is a reply to message #458807]

Mon, 27 November 2006 07:40

Eclipse User

So I think that lazily initializing your type system the first time
someone asks for it is a really good practice. It allows you to defer
initialization costs even if your plugin has been activated ... i.e. if
no one ever asked for it, then you've saved yourself something.

But of course, some things are fundamental. If that's the case, what
about initializing it in your Bundle#start(BundleContext)? The first
call to a class contained within your plugin will cause the start(*)
method to be called, and you can initialize your system there.

So if the editors are in the same plugin, the editor construction will
also cause your type system to initialize. Even if the editors are in a
different plugin, they must have some TypeSystem interface they need to
access your system which should also cause plugin initialization.

Later,
PW

Re: any way to hook the EditorManager on app startup? [message #459043 is a reply to message #459004]

Mon, 27 November 2006 15:38

Eclipse User

> But of course, some things are fundamental. If that's the case, what
> about initializing it in your Bundle#start(BundleContext)? The first
> call to a class contained within your plugin will cause the start(*)
> method to be called, and you can initialize your system there.
>

Hmm -- as mentioned, the TypeSystem is init'd by reading (a small number of) small XML files; but
the location of the root XML file of the files is stored as a preference, and when I call
<pseudocode> TypeSystem.init(); </pseudocode>, from within my activator's start() method (extended
solely for the purpose of making the init-call), I get the horrific call-stack below; nothing like
it ever seen in "normal" operation. (It is not impossible that I am doing something wrong with
prefs...) Other ideas?

thanks,
Paul

!SESSION 2006-11-27 15:31:51.058 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.5.0_04
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product com.mun.ist.saw2.saw2
Command-line arguments: -product com.mun.ist.saw2.saw2 -data
C:\0-UIMA\eclipse\runtime-SAW-II.product -dev
file:C:/0-UIMA/eclipse/workspace/.metadata/.plugins/org.ecli pse.pde.core/SAW-II.product/dev.properties
-debug C:\0-UIMA\eclipse\workspace\.metadata\.plugins\org.eclipse.p de.core\SAW-II.product/.options
-os win32 -ws win32 -arch x86 -clean

!ENTRY org.eclipse.osgi 4 0 2006-11-27 15:31:53.297
!MESSAGE An error occurred while automatically activating bundle com.mun.ist.saw2 (10).
!STACK 0
org.osgi.framework.BundleException: Exception in com.mun.ist.saw2.SawPlugin.start() of bundle
com.mun.ist.saw2.
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tartActivator(BundleContextImpl.java:1010)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tart(BundleContextImpl.java:966)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWor ker(BundleHost.java:317)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.star t(AbstractBundle.java:256)
at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter .preFindLocalClass(EclipseLazyStarter.java:86)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLoc alClass(ClasspathManager.java:409)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.fin dLocalClass(DefaultClassLoader.java:188)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLo calClass(BundleLoader.java:334)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(BundleLoader.java:386)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadCl ass(BundleLoader.java:278)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClas s(BundleHost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.load Class(AbstractBundle.java:1245)
at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI .createExecutableExtension(RegistryStrategyOSGI.java:147)
at
org.eclipse.core.internal.registry.ExtensionRegistry.createE xecutableExtension(ExtensionRegistry.java:759)
at
org.eclipse.core.internal.registry.ConfigurationElement.crea teExecutableExtension(ConfigurationElement.java:243)
at
org.eclipse.core.internal.registry.ConfigurationElementHandl e.createExecutableExtension(ConfigurationElementHandle.java: 51)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:74)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
Caused by: java.lang.NullPointerException
at
org.eclipse.ui.internal.UIPreferenceInitializer.initializeDe faultPreferences(UIPreferenceInitializer.java:46)
at
org.eclipse.core.internal.preferences.PreferenceServiceRegis tryHelper.runInitializer(PreferenceServiceRegistryHelper.jav a:276)
at
org.eclipse.core.internal.preferences.PreferenceServiceRegis tryHelper.applyRuntimeDefaults(PreferenceServiceRegistryHelp er.java:130)
at
org.eclipse.core.internal.preferences.PreferencesService.app lyRuntimeDefaults(PreferencesService.java:337)
at
org.eclipse.core.internal.preferences.DefaultPreferences.app lyRuntimeDefaults(DefaultPreferences.java:162)
at org.eclipse.core.internal.preferences.DefaultPreferences.loa dDefaults(DefaultPreferences.java:231)
at org.eclipse.core.internal.preferences.DefaultPreferences.loa d(DefaultPreferences.java:227)
at org.eclipse.core.internal.preferences.EclipsePreferences.cre ate(EclipsePreferences.java:307)
at org.eclipse.core.internal.preferences.EclipsePreferences.int ernalNode(EclipsePreferences.java:543)
at org.eclipse.core.internal.preferences.EclipsePreferences.nod e(EclipsePreferences.java:662)
at org.eclipse.core.internal.preferences.AbstractScope.getNode( AbstractScope.java:38)
at org.eclipse.core.runtime.preferences.DefaultScope.getNode(De faultScope.java:67)
at
org.eclipse.ui.preferences.ScopedPreferenceStore.getDefaultP references(ScopedPreferenceStore.java:248)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getPreferen ceNodes(ScopedPreferenceStore.java:282)
at org.eclipse.ui.preferences.ScopedPreferenceStore.internalGet (ScopedPreferenceStore.java:472)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getString(S copedPreferenceStore.java:532)
at com.mun.ist.saw2core.CorpusModelManager.getStoredLocationPat h(CorpusModelManager.java:76)
at com.mun.ist.saw2model.corpus.AbstractCorpusModelManager.<init >(AbstractCorpusModelManager.java:50)
at com.mun.ist.saw2core.CorpusModelManager.<init>(CorpusModelManager.java:116)
at com.mun.ist.saw2core.CorpusModelManager.get(CorpusModelManag er.java:43)
at
com.mun.ist.saw2.views.typesystem.TypeSystemPreferences$Aspe nTypeSystemInit.getCorpus(TypeSystemPreferences.java:239)
at com.mun.ist.saw2model.types.TypeSystemInitializer.initSystem (TypeSystemInitializer.java:46)
at com.mun.ist.saw2.views.typesystem.TypeSystemPreferences.init System(TypeSystemPreferences.java:144)
at com.mun.ist.saw2.SawPlugin.start(SawPlugin.java:36)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2 .run(BundleContextImpl.java:991)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tartActivator(BundleContextImpl.java:985)
... 31 more
Root exception:
java.lang.NullPointerException
at
org.eclipse.ui.internal.UIPreferenceInitializer.initializeDe faultPreferences(UIPreferenceInitializer.java:46)
at
org.eclipse.core.internal.preferences.PreferenceServiceRegis tryHelper.runInitializer(PreferenceServiceRegistryHelper.jav a:276)
at
org.eclipse.core.internal.preferences.PreferenceServiceRegis tryHelper.applyRuntimeDefaults(PreferenceServiceRegistryHelp er.java:130)
at
org.eclipse.core.internal.preferences.PreferencesService.app lyRuntimeDefaults(PreferencesService.java:337)
at
org.eclipse.core.internal.preferences.DefaultPreferences.app lyRuntimeDefaults(DefaultPreferences.java:162)
at org.eclipse.core.internal.preferences.DefaultPreferences.loa dDefaults(DefaultPreferences.java:231)
at org.eclipse.core.internal.preferences.DefaultPreferences.loa d(DefaultPreferences.java:227)
at org.eclipse.core.internal.preferences.EclipsePreferences.cre ate(EclipsePreferences.java:307)
at org.eclipse.core.internal.preferences.EclipsePreferences.int ernalNode(EclipsePreferences.java:543)
at org.eclipse.core.internal.preferences.EclipsePreferences.nod e(EclipsePreferences.java:662)
at org.eclipse.core.internal.preferences.AbstractScope.getNode( AbstractScope.java:38)
at org.eclipse.core.runtime.preferences.DefaultScope.getNode(De faultScope.java:67)
at
org.eclipse.ui.preferences.ScopedPreferenceStore.getDefaultP references(ScopedPreferenceStore.java:248)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getPreferen ceNodes(ScopedPreferenceStore.java:282)
at org.eclipse.ui.preferences.ScopedPreferenceStore.internalGet (ScopedPreferenceStore.java:472)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getString(S copedPreferenceStore.java:532)
at com.mun.ist.saw2core.CorpusModelManager.getStoredLocationPat h(CorpusModelManager.java:76)
at com.mun.ist.saw2model.corpus.AbstractCorpusModelManager.<init >(AbstractCorpusModelManager.java:50)
at com.mun.ist.saw2core.CorpusModelManager.<init>(CorpusModelManager.java:116)
at com.mun.ist.saw2core.CorpusModelManager.get(CorpusModelManag er.java:43)
at
com.mun.ist.saw2.views.typesystem.TypeSystemPreferences$Aspe nTypeSystemInit.getCorpus(TypeSystemPreferences.java:239)
at com.mun.ist.saw2model.types.TypeSystemInitializer.initSystem (TypeSystemInitializer.java:46)
at com.mun.ist.saw2.views.typesystem.TypeSystemPreferences.init System(TypeSystemPreferences.java:144)
at com.mun.ist.saw2.SawPlugin.start(SawPlugin.java:36)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2 .run(BundleContextImpl.java:991)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tartActivator(BundleContextImpl.java:985)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tart(BundleContextImpl.java:966)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWor ker(BundleHost.java:317)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.star t(AbstractBundle.java:256)
at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter .preFindLocalClass(EclipseLazyStarter.java:86)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLoc alClass(ClasspathManager.java:409)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.fin dLocalClass(DefaultClassLoader.java:188)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLo calClass(BundleLoader.java:334)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(BundleLoader.java:386)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadCl ass(BundleLoader.java:278)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClas s(BundleHost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.load Class(AbstractBundle.java:1245)
at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI .createExecutableExtension(RegistryStrategyOSGI.java:147)
at
org.eclipse.core.internal.registry.ExtensionRegistry.createE xecutableExtension(ExtensionRegistry.java:759)
at
org.eclipse.core.internal.registry.ConfigurationElement.crea teExecutableExtension(ConfigurationElement.java:243)
at
org.eclipse.core.internal.registry.ConfigurationElementHandl e.createExecutableExtension(ConfigurationElementHandle.java: 51)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:74)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)

!ENTRY org.eclipse.osgi 4 0 2006-11-27 15:31:53.317
!MESSAGE Application error
!STACK 1
org.eclipse.core.runtime.CoreException: Plug-in com.mun.ist.saw2 was unable to load class
com.mun.ist.saw2.Application.
at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI .throwException(RegistryStrategyOSGI.java:165)
at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI .createExecutableExtension(RegistryStrategyOSGI.java:149)
at
org.eclipse.core.internal.registry.ExtensionRegistry.createE xecutableExtension(ExtensionRegistry.java:759)
at
org.eclipse.core.internal.registry.ConfigurationElement.crea teExecutableExtension(ConfigurationElement.java:243)
at
org.eclipse.core.internal.registry.ConfigurationElementHandl e.createExecutableExtension(ConfigurationElementHandle.java: 51)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:74)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
org.eclipse.core.runtime.CoreException[1]: java.lang.ClassNotFoundException:
com.mun.ist.saw2.Application
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(BundleLoader.java:402)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadCl ass(BundleLoader.java:278)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClas s(BundleHost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.load Class(AbstractBundle.java:1245)

at
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI .createExecutableExtension(RegistryStrategyOSGI.java:147)
at
org.eclipse.core.internal.registry.ExtensionRegistry.createE xecutableExtension(ExtensionRegistry.java:759)
at
org.eclipse.core.internal.registry.ConfigurationElement.crea teExecutableExtension(ConfigurationElement.java:243)
at
org.eclipse.core.internal.registry.ConfigurationElementHandl e.createExecutableExtension(ConfigurationElementHandle.java: 51)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:74)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)

Re: any way to hook the EditorManager on app startup? [message #459045 is a reply to message #458832]

Mon, 27 November 2006 15:48

Eclipse User

Remy Suen wrote:

> Paul Keyser wrote:
>
>> Is there any way to "hook" that EditorManager, so that I can do this
>> init'n once? Or is it possible to get the type-system inti'n to be
>> done *before* the EditorManager runs, by specifying (something)?
>> (Prior attempts with "early startup" did not seem to work, since it
>> was not "early enough", but I may have done something wrongly.)
>
>
> Does the org.eclipse.ui.startup extension point work or was that what
> you were trying to do with regards to your "early startup" attempt?
>

That's what I was trying; fails completely. Well, the "earlyStartup()" method of my IStartup class
gets called, ok, but long after the EditorManager has run. Before I tried making my activator class
be the IStartup, which I now see is deprecated, so just now I tried simply making the
TypeSystem-initializer class be the IStartup, with the same result.

Paul

Re: any way to hook the EditorManager on app startup? [message #459049 is a reply to message #459043]

Mon, 27 November 2006 19:20

Eclipse User

Originally posted by: remy.suen.gmail.com

Paul Keyser wrote:
> I get
> the horrific call-stack below; nothing like it ever seen in "normal"
> operation. (It is not impossible that I am doing something wrong with
> prefs...) Other ideas?

I believe that's just a way of saying "an exception was thrown when
calling the start(BundleContext) method. I recommend you do something
like...

public void start(BundleContext context) throws Exception {
try {
super.start(context);
// do your stuff
} catch (Exception e) {
e.printStackTrace();
throw e;
}
}

This way you'll get the actual information of what's throwing the stack
trace, but at the same time you're propagating it upwards so that
Eclipse stops trying to do anything more with your plug-in (which is the
same thing as if you didn't put the try-catch of course).

Regards,
Rem

Re: any way to hook the EditorManager on app startup? [message #459919 is a reply to message #459049]

Fri, 08 December 2006 13:24

Eclipse User

Looks like the RCP-app's startup sequence is:

WorkbenchAdvisor.preStartup()
WorkbenchWindowAdvisor.preWindowOpen()
EditorManager.restore ...
WorkbenchAdvisor.postStartup()
FooPluginActivator.start()

Which means the the preStartup() method has got to be my choice for doing this initialization ... or?

Paul

Re: any way to hook the EditorManager on app startup? [message #459980 is a reply to message #459043]

Sun, 10 December 2006 05:41

Eclipse User

It looks like your code is trying to do something with its own preferences, but before the bundle has started:

java.lang.NullPointerException
at
org.eclipse.ui.internal.UIPreferenceInitializer.initializeDe faultPreferences(UIPreferenceInitializer.java:46)

One possibility is to move your preferences into a different bundle, and have an APi for accessing that data. Then, your UI bundle can depend on the non-UI bundle starting, but once started, the UI bundle can invoke the non-UI bundles accessor methods during its startup.

I think it's likely to be just a recursion issue of trying to access some of the bundle's data whilst the bundle is still starting.

Alex.

Re: any way to hook the EditorManager on app startup? [message #459997 is a reply to message #459980]

Sun, 10 December 2006 22:55

Eclipse User

Interesting idea, thanks. But what do you mean, exactly -- what code would go into that non-UI
(lower-level) plug-in that is to be loaded at startup? (I see what would go into the UI plug-in --
the prefs-page, along with all the other UI stuff; in fact, that's more or less what I have now.)

But raising that issue, makes me wonder if I may be doing something wrong with prefs, or failing to
do something needed. Reminder: I need to access the stored prefs-values at startup, before the user
ever opens a prefs-page; I'm using the PreferenceStore provided by AbstractUIPlugin.

I've looked at the (old) article on prefs, but it is pre-RCP and does not seem to contain anything
relevant: http://www.eclipse.org/articles/Article-Preferences/preferen ces.htm

I've looked at the bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=86750, which could be relevant,
but I am using Eclipse 3.2.1, and it is said to be fixed as of 3.1 -- do I still need to call
getStateLocation() or getInstanceLocation()?

There is also the possibility of an AbstractPreferenceInitializer (and the tag "initializer" of the
preferences ext.-pt.) -- would that be correct here?

I'll be trying these ideas, but it feels somewhat random-walky -- is there any description of how
one is supposed to handle this case -- which does not really seem all that remote?

thanks,
Paul

Previous Topic:	I18N
Next Topic:	Description in WizardPage

Goto Forum:

-=] Back to Top [=-

Current Time: Wed Mar 26 11:45:18 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter