Re: Auto Enabling/Disabling of Menu Items
Jaroslav,
Thank you for your input. I checked out your slideshow and I believe that
this is going to help me a great deal!
I guess my problem is that this is my first foray into designing on the
NetBeans Platform, so some old habits are dying rather hard. I will get
this though, because I have loved NetBeans since somewhere around version 3
and am bound and determined to use the Platform for my application.
Sincerely,
Sean Carrick
Owner - PekinSOFT Systems
s...@pekinsoft.com
(309) 989-0672
On Sat, Apr 4, 2020 at 12:51 AM Jaroslav Tulach
wrote:
> út 31. 3. 2020 v 4:22 odesílatel Sean Carrick napsal:
>
> > Hello, Dev List!
> >
> > I am somewhat new at designing RCPs on the NetBeans Platform and have run
> > into a small issue. If anyone can point me in the right direction, I will
> > be very grateful.
> >
> > I am working on a singleton class, FuelPurchaseManager, which stores the
> > data for the Proof of Concept for my project for making fuel purchases. I
> > have created a menu, Maintenance/Post Journals to Ledger. On this menu, I
> > have created the following Action:
> >
> > package com.northwind.fuel.controller;
> > import com.northwind.fuel.model.FuelPurchaseManager;import
> > java.awt.event.ActionEvent;import java.awt.event.ActionListener;import
> > org.openide.loaders.DataObject;import org.openide.awt.ActionID;import
> > org.openide.awt.ActionReference;import
> > org.openide.awt.ActionRegistration;import
> > org.openide.util.NbBundle.Messages;
> >
> > @ActionID(
> > category = "Maintenance",
> > id = "com.northwind.fuel.controller.PostJournalToGL"
> > )@ActionRegistration(
> > iconBase = "com/northwind/fuel/postToGL.png",
> > displayName = "#CTL_PostJournalToGL"
> > )@ActionReference(path = "Menu/Maintenance/Journals", position =
> > 3233)@Messages("CTL_PostJournalToGL=Post Fuel Journal")public final
> > class PostJournalToGL implements ActionListener {
> >
> > private final FuelPurchaseManager context;
> >
> > public PostJournalToGL(FuelPurchaseManager context) {
> > this.context = context;
> > }
> >
> > @Override
> > public void actionPerformed(ActionEvent ev) {
> > FuelPurchaseManager.getInstance().actionPerformed(ev);
> >
>
> Wrong. Don't use singleton. Use `context`.
>
>
> > }
> > }
> >
> >
> > I have set up the FuelPurchaseManager singleton as follows:
> >
> > public class FuelPurchaseManager extends AbstractAction
> > implements LookupListener, ContextAwareAction {
> >
>
> Remove `extends AbstractAction implements LookupListener,
> ContextAwareAction` keep just the business logic.
>
> Then just make sure a TopComponent with instance of `FuelPurchaceManager`
> in its lookup is opened - on startup - on some other action - etc.:
> ```
> TopComponent tc = new TopComponent() {
> {
> associateLookup(Lookups.singleton(new
> FuelPurchaceManager()));
> }
> };
> tc.open();
> tc.requestActive();
> ```
>
> Your `PostJournalToGL` action is going to be enabled when your TopComponent
> is focused and disabled otherwise.
> -jt
>
> PS:
>
> https://www.slideshare.net/guestb9a4bf/mvcdci-in-netbeans-by-jaroslav-tulach
> PPS: http://wiki.apidesign.org/wiki/DCI
>
>
>
> > public static final long serialVersionUID = 6597346658963L;
> >
> > private static FuelPurchaseManager mgr = null;
> > private Lookup context;
> > Lookup.Result lkpInfo;
> >
> > private final ArrayList journal;
> >
> > private FuelPurchaseManager() {
> > this.journal = new ArrayList<>();
> >
> > /*
> > *
> > * DEBUGGING CODE: The following code, until the "END
> > DEBUGGING" ** comment is for the Proof of Concept
> > only. It will need to be * * updated to ***actual***
> > business logic before we create a release * * build.
> >*
> > /
> > DateTimeFormatter fmt = DateTimeFormatter.ofPattern("MMM dd,
> > ");
> > this.journal.add(new FuelPurchase(
> > LocalDate.parse("Jan 14, 2020", fmt), // Tx date
> > 540312, // Odometer
> > 102.890, // # of gallons
> > 2.765, // Price per gallon
> > 284.49)); // Total price
> > this.journal.add(new FuelPurchase(
> > LocalDate.parse("Jan 17, 2020", fmt),
> > 541990,
> > 134.880,
> > 2.493,
> > 336.26));
> > this.journal.add(new FuelPurchase(
> > LocalDate.parse("Jan 20, 2020", fmt),
> > 542766,
> > 151.460,
> > 2.420,
> > 366.46));
> > this.journal.add(new FuelPurchase(
> > LocalDate.par
Re: Auto Enabling/Disabling of Menu Items
út 31. 3. 2020 v 4:22 odesílatel Sean Carrick napsal:
> Hello, Dev List!
>
> I am somewhat new at designing RCPs on the NetBeans Platform and have run
> into a small issue. If anyone can point me in the right direction, I will
> be very grateful.
>
> I am working on a singleton class, FuelPurchaseManager, which stores the
> data for the Proof of Concept for my project for making fuel purchases. I
> have created a menu, Maintenance/Post Journals to Ledger. On this menu, I
> have created the following Action:
>
> package com.northwind.fuel.controller;
> import com.northwind.fuel.model.FuelPurchaseManager;import
> java.awt.event.ActionEvent;import java.awt.event.ActionListener;import
> org.openide.loaders.DataObject;import org.openide.awt.ActionID;import
> org.openide.awt.ActionReference;import
> org.openide.awt.ActionRegistration;import
> org.openide.util.NbBundle.Messages;
>
> @ActionID(
> category = "Maintenance",
> id = "com.northwind.fuel.controller.PostJournalToGL"
> )@ActionRegistration(
> iconBase = "com/northwind/fuel/postToGL.png",
> displayName = "#CTL_PostJournalToGL"
> )@ActionReference(path = "Menu/Maintenance/Journals", position =
> 3233)@Messages("CTL_PostJournalToGL=Post Fuel Journal")public final
> class PostJournalToGL implements ActionListener {
>
> private final FuelPurchaseManager context;
>
> public PostJournalToGL(FuelPurchaseManager context) {
> this.context = context;
> }
>
> @Override
> public void actionPerformed(ActionEvent ev) {
> FuelPurchaseManager.getInstance().actionPerformed(ev);
>
Wrong. Don't use singleton. Use `context`.
> }
> }
>
>
> I have set up the FuelPurchaseManager singleton as follows:
>
> public class FuelPurchaseManager extends AbstractAction
> implements LookupListener, ContextAwareAction {
>
Remove `extends AbstractAction implements LookupListener,
ContextAwareAction` keep just the business logic.
Then just make sure a TopComponent with instance of `FuelPurchaceManager`
in its lookup is opened - on startup - on some other action - etc.:
```
TopComponent tc = new TopComponent() {
{
associateLookup(Lookups.singleton(new
FuelPurchaceManager()));
}
};
tc.open();
tc.requestActive();
```
Your `PostJournalToGL` action is going to be enabled when your TopComponent
is focused and disabled otherwise.
-jt
PS:
https://www.slideshare.net/guestb9a4bf/mvcdci-in-netbeans-by-jaroslav-tulach
PPS: http://wiki.apidesign.org/wiki/DCI
> public static final long serialVersionUID = 6597346658963L;
>
> private static FuelPurchaseManager mgr = null;
> private Lookup context;
> Lookup.Result lkpInfo;
>
> private final ArrayList journal;
>
> private FuelPurchaseManager() {
> this.journal = new ArrayList<>();
>
> /*
> *
> * DEBUGGING CODE: The following code, until the "END
> DEBUGGING" ** comment is for the Proof of Concept
> only. It will need to be * * updated to ***actual***
> business logic before we create a release * * build.
>*
> /
> DateTimeFormatter fmt = DateTimeFormatter.ofPattern("MMM dd,
> ");
> this.journal.add(new FuelPurchase(
> LocalDate.parse("Jan 14, 2020", fmt), // Tx date
> 540312, // Odometer
> 102.890, // # of gallons
> 2.765, // Price per gallon
> 284.49)); // Total price
> this.journal.add(new FuelPurchase(
> LocalDate.parse("Jan 17, 2020", fmt),
> 541990,
> 134.880,
> 2.493,
> 336.26));
> this.journal.add(new FuelPurchase(
> LocalDate.parse("Jan 20, 2020", fmt),
> 542766,
> 151.460,
> 2.420,
> 366.46));
> this.journal.add(new FuelPurchase(
> LocalDate.parse("Jan 21, 2020", fmt),
> 543088,
> 92.730,
> 2.306,
> 213.80));
> this.journal.add(new FuelPurchase(
> LocalDate.parse("Jan 23, 2020", fmt),
> 545317,
> 161.060,
> 2.620,
> 421.99));
> this.journal.add(new FuelPurchase(
> LocalDate.parse("Jan 25, 2020", fmt),
> 546525,
> 127.360,
> 2.706,
> 344.66));
> this.journal.add(new FuelPurchase(
> LocalDate.parse("Jan 29, 2020", fmt),
> 547184,
> 168.880,
> 2.315,
> 390.87));
> /*
> ***
Re: Auto Enabling/Disabling of Menu Items
Eirik,
I appreciate your response to my question. Thank you for letting me know
that the class has to be tied to a Node. Now I know which way I have to go
to make it work the way I am wanting.
Just so you better understand why I have the menu item conditional (as
stated in the Action Wizard), or context-sensitive, it is a menu for
posting journal entries to the General Ledger in an accounting system.
There is no need for the menu to be active if there are no journal entries
to post. I *could* have it be globally available and just pop a message
that tells the user there are no entries to post, if none have been added
since the last post, but I thought that only have the ability to post
available when there are journal entries would be better.
Again, thank you very much for giving me direction. Blessings!
Sincerely,
Sean Carrick
Owner - PekinSOFT Systems
s...@pekinsoft.com
(309) 989-0672
On Tue, Mar 31, 2020 at 8:31 AM Eirik Bakke wrote:
> > Now, since the PostJournalToGL action class is set up as conditional
>
> What do you mean by "conditional"? I assume you mean context-sensitive?
>
> > shouldn't it enable the menu item whenever there is a change to the data
> in the FuelPurchaseManager class?
>
> Not whenever there's a change to the data _in_ the FuelPurchasingManager
> class, but when a FuelPurchasingManager instance appears in the lookup of
> the currently selected Node or similar.
>
> It's a little odd to have an action be context-sensitive with respect to a
> singleton; it could just as well be written as a global action that always
> works. Usually actions are sensitive wrt. some object that can change based
> on the user's Node selection.
>
> -- Eirik
>
> -Original Message-
> From: Sean Carrick
> Sent: Monday, March 30, 2020 10:23 PM
> To: dev@netbeans.apache.org
> Subject: Auto Enabling/Disabling of Menu Items
>
> Hello, Dev List!
>
> I am somewhat new at designing RCPs on the NetBeans Platform and have run
> into a small issue. If anyone can point me in the right direction, I will
> be very grateful.
>
> I am working on a singleton class, FuelPurchaseManager, which stores the
> data for the Proof of Concept for my project for making fuel purchases. I
> have created a menu, Maintenance/Post Journals to Ledger. On this menu, I
> have created the following Action:
>
> package com.northwind.fuel.controller;
> import com.northwind.fuel.model.FuelPurchaseManager;import
> java.awt.event.ActionEvent;import java.awt.event.ActionListener;import
> org.openide.loaders.DataObject;import org.openide.awt.ActionID;import
> org.openide.awt.ActionReference;import
> org.openide.awt.ActionRegistration;import
> org.openide.util.NbBundle.Messages;
>
> @ActionID(
> category = "Maintenance",
> id = "com.northwind.fuel.controller.PostJournalToGL"
> )@ActionRegistration(
> iconBase = "com/northwind/fuel/postToGL.png",
> displayName = "#CTL_PostJournalToGL"
> )@ActionReference(path = "Menu/Maintenance/Journals", position =
> 3233)@Messages("CTL_PostJournalToGL=Post Fuel Journal")public final class
> PostJournalToGL implements ActionListener {
>
> private final FuelPurchaseManager context;
>
> public PostJournalToGL(FuelPurchaseManager context) {
> this.context = context;
> }
>
> @Override
> public void actionPerformed(ActionEvent ev) {
> FuelPurchaseManager.getInstance().actionPerformed(ev);
> }
> }
>
>
> I have set up the FuelPurchaseManager singleton as follows:
>
> public class FuelPurchaseManager extends AbstractAction
> implements LookupListener, ContextAwareAction {
> public static final long serialVersionUID = 6597346658963L;
>
> private static FuelPurchaseManager mgr = null;
> private Lookup context;
> Lookup.Result lkpInfo;
>
> private final ArrayList journal;
>
> private FuelPurchaseManager() {
> this.journal = new ArrayList<>();
>
> /*
> *
> * DEBUGGING CODE: The following code, until the "END
> DEBUGGING" ** comment is for the Proof of Concept
> only. It will need to be * * updated to ***actual***
> business logic before we create a release * * build.
>*
> /
> DateTimeFormatter fmt = DateTimeFormatter.ofPattern("MMM dd,
> ");
> this.journal.add(new FuelPurchase(
> LocalDate.parse("
RE: Auto Enabling/Disabling of Menu Items
> Now, since the PostJournalToGL action class is set up as conditional
What do you mean by "conditional"? I assume you mean context-sensitive?
> shouldn't it enable the menu item whenever there is a change to the data in
> the FuelPurchaseManager class?
Not whenever there's a change to the data _in_ the FuelPurchasingManager class,
but when a FuelPurchasingManager instance appears in the lookup of the
currently selected Node or similar.
It's a little odd to have an action be context-sensitive with respect to a
singleton; it could just as well be written as a global action that always
works. Usually actions are sensitive wrt. some object that can change based on
the user's Node selection.
-- Eirik
-Original Message-
From: Sean Carrick
Sent: Monday, March 30, 2020 10:23 PM
To: dev@netbeans.apache.org
Subject: Auto Enabling/Disabling of Menu Items
Hello, Dev List!
I am somewhat new at designing RCPs on the NetBeans Platform and have run into
a small issue. If anyone can point me in the right direction, I will be very
grateful.
I am working on a singleton class, FuelPurchaseManager, which stores the data
for the Proof of Concept for my project for making fuel purchases. I have
created a menu, Maintenance/Post Journals to Ledger. On this menu, I have
created the following Action:
package com.northwind.fuel.controller;
import com.northwind.fuel.model.FuelPurchaseManager;import
java.awt.event.ActionEvent;import java.awt.event.ActionListener;import
org.openide.loaders.DataObject;import org.openide.awt.ActionID;import
org.openide.awt.ActionReference;import
org.openide.awt.ActionRegistration;import
org.openide.util.NbBundle.Messages;
@ActionID(
category = "Maintenance",
id = "com.northwind.fuel.controller.PostJournalToGL"
)@ActionRegistration(
iconBase = "com/northwind/fuel/postToGL.png",
displayName = "#CTL_PostJournalToGL"
)@ActionReference(path = "Menu/Maintenance/Journals", position =
3233)@Messages("CTL_PostJournalToGL=Post Fuel Journal")public final class
PostJournalToGL implements ActionListener {
private final FuelPurchaseManager context;
public PostJournalToGL(FuelPurchaseManager context) {
this.context = context;
}
@Override
public void actionPerformed(ActionEvent ev) {
FuelPurchaseManager.getInstance().actionPerformed(ev);
}
}
I have set up the FuelPurchaseManager singleton as follows:
public class FuelPurchaseManager extends AbstractAction
implements LookupListener, ContextAwareAction {
public static final long serialVersionUID = 6597346658963L;
private static FuelPurchaseManager mgr = null;
private Lookup context;
Lookup.Result lkpInfo;
private final ArrayList journal;
private FuelPurchaseManager() {
this.journal = new ArrayList<>();
/* *
* DEBUGGING CODE: The following code, until the "END
DEBUGGING" ** comment is for the Proof of Concept
only. It will need to be * * updated to ***actual***
business logic before we create a release * * build.
*
/
DateTimeFormatter fmt = DateTimeFormatter.ofPattern("MMM dd, ");
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 14, 2020", fmt), // Tx date
540312, // Odometer
102.890, // # of gallons
2.765, // Price per gallon
284.49)); // Total price
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 17, 2020", fmt),
541990,
134.880,
2.493,
336.26));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 20, 2020", fmt),
542766,
151.460,
2.420,
366.46));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 21, 2020", fmt),
543088,
92.730,
2.306,
213.80));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 23, 2020", fmt),
545317,
161.060,
2.620,
421.99));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 25, 2020", fmt),
546525,
127.360,
2.706,
344.66));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 29, 2020", fmt),
547184,
168.880,
Auto Enabling/Disabling of Menu Items
Hello, Dev List!
I am somewhat new at designing RCPs on the NetBeans Platform and have run
into a small issue. If anyone can point me in the right direction, I will
be very grateful.
I am working on a singleton class, FuelPurchaseManager, which stores the
data for the Proof of Concept for my project for making fuel purchases. I
have created a menu, Maintenance/Post Journals to Ledger. On this menu, I
have created the following Action:
package com.northwind.fuel.controller;
import com.northwind.fuel.model.FuelPurchaseManager;import
java.awt.event.ActionEvent;import java.awt.event.ActionListener;import
org.openide.loaders.DataObject;import org.openide.awt.ActionID;import
org.openide.awt.ActionReference;import
org.openide.awt.ActionRegistration;import
org.openide.util.NbBundle.Messages;
@ActionID(
category = "Maintenance",
id = "com.northwind.fuel.controller.PostJournalToGL"
)@ActionRegistration(
iconBase = "com/northwind/fuel/postToGL.png",
displayName = "#CTL_PostJournalToGL"
)@ActionReference(path = "Menu/Maintenance/Journals", position =
3233)@Messages("CTL_PostJournalToGL=Post Fuel Journal")public final
class PostJournalToGL implements ActionListener {
private final FuelPurchaseManager context;
public PostJournalToGL(FuelPurchaseManager context) {
this.context = context;
}
@Override
public void actionPerformed(ActionEvent ev) {
FuelPurchaseManager.getInstance().actionPerformed(ev);
}
}
I have set up the FuelPurchaseManager singleton as follows:
public class FuelPurchaseManager extends AbstractAction
implements LookupListener, ContextAwareAction {
public static final long serialVersionUID = 6597346658963L;
private static FuelPurchaseManager mgr = null;
private Lookup context;
Lookup.Result lkpInfo;
private final ArrayList journal;
private FuelPurchaseManager() {
this.journal = new ArrayList<>();
/* *
* DEBUGGING CODE: The following code, until the "END
DEBUGGING" ** comment is for the Proof of Concept
only. It will need to be * * updated to ***actual***
business logic before we create a release * * build.
*
/
DateTimeFormatter fmt = DateTimeFormatter.ofPattern("MMM dd, ");
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 14, 2020", fmt), // Tx date
540312, // Odometer
102.890, // # of gallons
2.765, // Price per gallon
284.49)); // Total price
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 17, 2020", fmt),
541990,
134.880,
2.493,
336.26));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 20, 2020", fmt),
542766,
151.460,
2.420,
366.46));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 21, 2020", fmt),
543088,
92.730,
2.306,
213.80));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 23, 2020", fmt),
545317,
161.060,
2.620,
421.99));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 25, 2020", fmt),
546525,
127.360,
2.706,
344.66));
this.journal.add(new FuelPurchase(
LocalDate.parse("Jan 29, 2020", fmt),
547184,
168.880,
2.315,
390.87));
/*
* END OF DEBUGGING CODE: Remove the above before release
build.*
***/
}
private FuelPurchaseManager(Lookup context) {
this();
putValue(Action.NAME, NbBundle.getMessage(FuelPurchaseManager.class,
"LBL_Action"));
this.context = context;
}
void init() {
assert SwingUtilities.isEventDispatchThread()
: "this shall be called just from AWT thread";
if ( lkpInfo != null ) {
return;
}
}
public static FuelPurchaseManager getInstance() {
if ( mgr == null )
mgr = new FuelPurchaseManager();
return mgr;
}
@Override
public boolean isEnabled() {
init();
return super.isEnabled();
}
@Override
public void actionPerformed(ActionEvent e) {
init();
throw new UnsupportedOperationException("`FuelPurchaseManage
