Home » Eclipse Projects » Eclipse Platform » [Activities] how to use activityPatternBinding's with one's own newly-defined extension-point?
| [Activities] how to use activityPatternBinding's with one's own newly-defined extension-point? [message #309785] |
Wed, 08 November 2006 18:09  |
 Paul E. Keyser
Messages: 878
Registered: July 2009 |
Senior Member |
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R3.2.1, WinXP
So, I define a whole new extension-point (write the EXSD file, etc.), plug into it, all cool. Here's
an example of my plugging into it (the EXSD says the "class" must implement ISomeStrategy):
<extension
point="com.mun.ist.app.theStrategy">
<strategy
class="com.mun.ist.app.strategies.MySimpleStrategy"
id="simpleStrategyId"
label="Strategy to do what I like"/>
</extension>
Now I want to place my new extension-point under the activities framework, so I write an
activityPatternBinding for it, like this (the extending class and XML are indeed in plugin
com.mun.ist.app; there is a working activity called com.mun.ist.app.expertUserActivity):
<activityPatternBinding
activityId="com.mun.ist.app.expertUserActivity"
pattern="com\.mun\.ist\.app/simpleStrategyId"/>
Now, how will my id become known to the activities framework? The clue is at the very full
discussion here:
http://eclipse.pookzilla.net/2006/10/context-capability-and- perspective.php
So I create from my IConfigurationElement a factory-class which itself extends IPluginContribution,
and ensure that the correct plugin and local ids are being returned. (Read the code at
ActionSetDescriptor as aguide to how to work.)
Fails: the stragey is just as available as if the activityPatternBinding were commented out. So --
there must be another step needed in order to get activityPatternBinding's to play nicely with
home-grown extension-points. What is that step? (Guess: I need to "register" each
IPluginContribution with the FooManager?)
thanks
Paul
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| Re: [Activities] how to use activityPatternBinding's with one's own newly-defined extension-point? [message #309829 is a reply to message #309808] |
Thu, 09 November 2006 23:09  |
Paul E. Keyser
Messages: 878
Registered: July 2009 |
Senior Member |
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Paul Webster wrote:
> Paul Keyser wrote:
>
....
> When you call WorkbenchActivityHelper.filterItem(pc) before you show one
> of your filtered items, does it return true or false?
>
false (whether or not I have the relevant activity enabled or not)
I checked the IIdentifier's state in the debugger, and it is indeed being passed the relevant
activity, as well as the apparently-correct "unified" id, i.e., "com.mun.ist.app/simpleStrategyId".
If I understand the contract of filterItem(), its return-value is to be read as:
<pseudocode>filterItem() ? hideItem() : showItem()</pseudocode>
Correct? Anyway, if it *always* returns *one* value, I must be doing something else wrong, eh?
thanks,
Paul
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| Re: [Activities] how to use activityPatternBinding's with one's own newly-define [message #309862 is a reply to message #309829] |
Fri, 10 November 2006 14:20 |
Eclipse User |
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Originally posted by: kim_horne.ca.ibm.com
Paul Keyser wrote:
That pseudocode looks okay. Without seeing your code in action I don't
know why it's not working - there's no special trick to getting activities
to work with third party extension points. You define your activities,
you define your bindings, and you ensure that the code you use to show
your extensions passes appropriate IPluginContribtion objects to
WorkbenchActivityHelper.filterItem(). You might want to set a
breakpoint in MutableActivityManager.updateIdentifier and see what happens
when your activity.isMatch() is called.
> Paul Webster wrote:
> false (whether or not I have the relevant activity enabled or not)
> I checked the IIdentifier's state in the debugger, and it is indeed being
passed the relevant
> activity, as well as the apparently-correct "unified" id, i.e.,
"com.mun.ist.app/simpleStrategyId".
> If I understand the contract of filterItem(), its return-value is to be read
as:
> <pseudocode>filterItem() ? hideItem() : showItem()</pseudocode>
> Correct? Anyway, if it *always* returns *one* value, I must be doing
something else wrong, eh?
> thanks,
> Paul
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| Re: [Activities] how to use activityPatternBinding's with one's own newly-define [message #309972 is a reply to message #309886] |
Mon, 13 November 2006 20:26 |
| Eclipse User |
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Originally posted by: kim_horne.ca.ibm.com
Paul Keyser wrote:
> Very nice system!
Thanks!
> BTW, what determines the order in which the categories are listed in GUI of
the activities
> pref-page? (Seems like it's alphabetical by id of first activity added to
the category, which seems
> a bit random.)
In 3.2 this is the behaviour. We addressed this in 3.3 and it's now
displaying the items alphabetically according to their user-friendly name.
> thanks,
> Paul
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| Re: [Activities] how to use activityPatternBinding's with one's own newly-define [message #309992 is a reply to message #309972] |
Tue, 14 November 2006 20:00 |
Paul E. Keyser
Messages: 878
Registered: July 2009 |
Senior Member |
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>> BTW, what determines the order in which the categories are listed in
>> GUI of the activities pref-page? (Seems like it's alphabetical by id
>> of first activity added to the category, which seems a bit random.)
>
> In 3.2 this is the behaviour. We addressed this in 3.3 and it's now
> displaying the items alphabetically according to their user-friendly name.
>
Good, when my group gets up to 3.3 I can stop alphabetizing my activity-id's :)
Meanwhile, I'm still needing help with a post from a while back, "binding
activities to help?" -- is it indeed the case that actvityPatternBinding's
can be used to enable/diable *only* TOC files in the help system (and not
individual HTML files)?
If so, any suggestions on where to go to learn more about setting up TOC
files? (i.e., in that case, I'd want to have a full TOC-hierarchy to match
my activities, right?)
thanks,
Paul
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