Re: Re: Question to Clarify Understanding with the DataFolder and FileObject
Silly question ...which tutorial is this?
Eric Bresie
ebre...@gmail.com (mailto:ebre...@gmail.com)
> On December 3, 2020 at 5:17:14 PM CST, Sean Carrick (mailto:s...@pekinsoft.com)> wrote:
> Gj,
>
> Ok, so what I am understanding now is that the folder is virtual and
> *only* located within the confines of the Virtual Filesystem, within the
> layer.xml file. So far, I am with you on this.
>
> Now, if I provided an editor to the user to enter a new vehicle, for
> example, to include make, model, color, and vehicle ID number (VIN),
> then the save action is invoked upon that new vehicle. This vehicle file
> would then, also, be saved in the Virtual Filesystem, correct? And it
> would be saved in the "data/vehicles" folder in the Virtual Filesystem?
>
> Am I now understanding it correctly?
>
> Thanks once again for your assistance. I do truly appreciate it.
>
> Sean C.
>
> PS: If I am being thickheaded, please feel free to tell me so. I am good
> with that. ;-)
>
>
> On 12/3/20 4:52 PM, Geertjan Wielenga wrote:
> > It is a virtual folder, what you see in the layer file. The virtual folder
> > is in the virtual filesystem of the NetBeans Platform. You will not see it
> > anywhere on disk.
> >
> > Gj
> >
> > On Thu, 3 Dec 2020 at 23:28, Sean Carrick > (mailto:s...@pekinsoft.com)> wrote:
> >
> > > Gj,
> > >
> > > Again, thank you for your gracious assistance. I do, however, have one
> > > more question about the DataFolder, DataObject, and the layer.xml file.
> > >
> > > If I were to create a section in the
> > > layer.xml file, when the save action is invoked, would that then create
> > > the folder on disk?
> > >
> > > Also, where on disk is that folder created? Is it in the default user's
> > > data folder? Can I specify somewhere else on disk to create/use the
> > > custom folder?
> > >
> > > I really am trying to understand how the System Filesystem works and how
> > > it relates to the physical media, when needed. Your tutorials have
> > > brought me a long way, but seem to cause questions for me and I struggle
> > > to find the answers.
> > >
> > > Thank you again for your assistance, this time in advance. Have a
> > > wonderful day.
> > >
> > > Sean C.
> > >
> > > On 12/3/20 2:32 AM, Geertjan Wielenga wrote:
> > > > Next, since the Object in your scenario is a DataFolder, when a folder
> > > > is
> > > > selected, the Action is automatically enabled because the folder has a
> > > > DataFolder built into its Lookup.
> > > >
> > > > Now that the Action is enabled, you have the DataFolder available in the
> > > > constructor and can refer to it and use it and refer to it in the next
> > > part
> > > > of the logic in the ActionListener.
> > > >
> > > > Gj
> > > >
> > > > On Thu, 3 Dec 2020 at 09:26, Geertjan Wielenga <
> > > > geertjan.wiele...@googlemail.com
> > > > (mailto:geertjan.wiele...@googlemail.com)> wrote:
> > > >
> > > > > The fact that the ActionListener takes an Object as an argument means
> > > that
> > > > > the annotations at the top of the class (or in the layer.xml file)
> > > > > will
> > > > > generate a context-sensitive Action that is sensitive to the Object in
> > > the
> > > > > argument. The Action will be enabled when the Object is available,
> > > i.e., in
> > > > > context, thanks to the Lookup.
> > > > >
> > > > > Gj
> > > > >
> > > > > On Thu, 3 Dec 2020 at 02:37, Sean Carrick > > > > (mailto:s...@pekinsoft.com)> wrote:
> > > > >
> > > > > > Gj,
> > > > > >
> > > > > > Hello.
> > > > > >
> > > > > > I was looking at your tutorial (old, for NB8.1) for the RSS Reader.
> > > > > > I
> > > > > > was especially looking at how you were storing new, user-created
> > > folders
> > > > > > and RSS feed files. However, reading through it, I was getting a
> > > > > > little
> > > > > > confused, and want to make sure that I am properly understanding how
> > > > > > your last three code snippets are working together. First, I want to
> > > > > > explain how I am understanding it, then ask my questions of you.
> > > > > >
> > > > > > Toward the end of the section titled "Displaying the Node Hierarchy
> > > > > > in
> > > > > > the Feed Window, in Step 4, you added code to the end of the
> > > > > > TopComponent's constructor with the BeanTreeView and a try...catch
> > > block.
> > > > > > The two lines that I am particularly referring to are:
> > > > > >
> > > > > > FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
> > > > > >
> > > > > > Node rssFeedsNode =
> > > > > > DataObject.find(rssFeedsFolder).getNodeDelegate();
> > > > > >
> > > > > > Down further in the tutorial, you have two code blocks: the first is
> > > the
> > > > > > AddRssAction class and the second is the AddFolderAction class.
> > > > > > Both of
> > > > > > these classes' constructors take a DataFolder object as an argument.
> > > > > >
> > > > > > Now that I have laid all of that out, here is the way I am
> > > understanding
> > > > > > this, and I would like you to correct me if I am wrong,
Re: Question to Clarify Understanding with the DataFolder and FileObject
On 12/3/20 3:17 PM, Sean Carrick wrote:
Gj,
Ok, so what I am understanding now is that the folder is virtual and
*only* located within the confines of the Virtual Filesystem, within
the layer.xml file. So far, I am with you on this.
Now, if I provided an editor to the user to enter a new vehicle, for
example, to include make, model, color, and vehicle ID number (VIN),
then the save action is invoked upon that new vehicle. This vehicle
file would then, also, be saved in the Virtual Filesystem, correct?
And it would be saved in the "data/vehicles" folder in the Virtual
Filesystem?
People usually use a Database or real filesystem for such tasks.
Am I now understanding it correctly?
Thanks once again for your assistance. I do truly appreciate it.
Sean C.
PS: If I am being thickheaded, please feel free to tell me so. I am
good with that. ;-)
On 12/3/20 4:52 PM, Geertjan Wielenga wrote:
It is a virtual folder, what you see in the layer file. The virtual
folder
is in the virtual filesystem of the NetBeans Platform. You will not
see it
anywhere on disk.
Gj
On Thu, 3 Dec 2020 at 23:28, Sean Carrick wrote:
Gj,
Again, thank you for your gracious assistance. I do, however, have one
more question about the DataFolder, DataObject, and the layer.xml file.
If I were to create a section in the
layer.xml file, when the save action is invoked, would that then create
the folder on disk?
Also, where on disk is that folder created? Is it in the default user's
data folder? Can I specify somewhere else on disk to create/use the
custom folder?
I really am trying to understand how the System Filesystem works and
how
it relates to the physical media, when needed. Your tutorials have
brought me a long way, but seem to cause questions for me and I
struggle
to find the answers.
Thank you again for your assistance, this time in advance. Have a
wonderful day.
Sean C.
On 12/3/20 2:32 AM, Geertjan Wielenga wrote:
Next, since the Object in your scenario is a DataFolder, when a
folder is
selected, the Action is automatically enabled because the folder has a
DataFolder built into its Lookup.
Now that the Action is enabled, you have the DataFolder available
in the
constructor and can refer to it and use it and refer to it in the next
part
of the logic in the ActionListener.
Gj
On Thu, 3 Dec 2020 at 09:26, Geertjan Wielenga <
geertjan.wiele...@googlemail.com> wrote:
The fact that the ActionListener takes an Object as an argument means
that
the annotations at the top of the class (or in the layer.xml file)
will
generate a context-sensitive Action that is sensitive to the
Object in
the
argument. The Action will be enabled when the Object is available,
i.e., in
context, thanks to the Lookup.
Gj
On Thu, 3 Dec 2020 at 02:37, Sean Carrick wrote:
Gj,
Hello.
I was looking at your tutorial (old, for NB8.1) for the RSS
Reader. I
was especially looking at how you were storing new, user-created
folders
and RSS feed files. However, reading through it, I was getting a
little
confused, and want to make sure that I am properly understanding how
your last three code snippets are working together. First, I want to
explain how I am understanding it, then ask my questions of you.
Toward the end of the section titled "Displaying the Node
Hierarchy in
the Feed Window, in Step 4, you added code to the end of the
TopComponent's constructor with the BeanTreeView and a try...catch
block.
The two lines that I am particularly referring to are:
FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
Node rssFeedsNode =
DataObject.find(rssFeedsFolder).getNodeDelegate();
Down further in the tutorial, you have two code blocks: the first is
the
AddRssAction class and the second is the AddFolderAction class.
Both of
these classes' constructors take a DataFolder object as an argument.
Now that I have laid all of that out, here is the way I am
understanding
this, and I would like you to correct me if I am wrong, please.
By creating the FileObject rssFeedsFolder and getting the config
file
from FileUtil, when the DataObject.find() method is called, that
gets
the rssFeedsFolder object into the constructors of the two Action
classes, correct?
I do not see any other code regarding these Actions and,
therefore, am
having trouble understanding how the two Action classes receive
their
parameter value. With what I just explained of my understanding
in the
paragraph above, am I even close to figuring this out? Or, do I
need to
go back to kindergarten and re-learn reading comprehension? ;-}
Regardless of how off I am, I am determined to learn this system. I
appreciate your assistance in getting me moving in the correct
direction.
Cheers,
Sean C.
-
To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
For additional commands, e-mail: dev-h...@netbeans.apache.org
For further information about the
Re: Question to Clarify Understanding with the DataFolder and FileObject
Gj,
Ok, so what I am understanding now is that the folder is virtual and
*only* located within the confines of the Virtual Filesystem, within the
layer.xml file. So far, I am with you on this.
Now, if I provided an editor to the user to enter a new vehicle, for
example, to include make, model, color, and vehicle ID number (VIN),
then the save action is invoked upon that new vehicle. This vehicle file
would then, also, be saved in the Virtual Filesystem, correct? And it
would be saved in the "data/vehicles" folder in the Virtual Filesystem?
Am I now understanding it correctly?
Thanks once again for your assistance. I do truly appreciate it.
Sean C.
PS: If I am being thickheaded, please feel free to tell me so. I am good
with that. ;-)
On 12/3/20 4:52 PM, Geertjan Wielenga wrote:
It is a virtual folder, what you see in the layer file. The virtual folder
is in the virtual filesystem of the NetBeans Platform. You will not see it
anywhere on disk.
Gj
On Thu, 3 Dec 2020 at 23:28, Sean Carrick wrote:
Gj,
Again, thank you for your gracious assistance. I do, however, have one
more question about the DataFolder, DataObject, and the layer.xml file.
If I were to create a section in the
layer.xml file, when the save action is invoked, would that then create
the folder on disk?
Also, where on disk is that folder created? Is it in the default user's
data folder? Can I specify somewhere else on disk to create/use the
custom folder?
I really am trying to understand how the System Filesystem works and how
it relates to the physical media, when needed. Your tutorials have
brought me a long way, but seem to cause questions for me and I struggle
to find the answers.
Thank you again for your assistance, this time in advance. Have a
wonderful day.
Sean C.
On 12/3/20 2:32 AM, Geertjan Wielenga wrote:
Next, since the Object in your scenario is a DataFolder, when a folder is
selected, the Action is automatically enabled because the folder has a
DataFolder built into its Lookup.
Now that the Action is enabled, you have the DataFolder available in the
constructor and can refer to it and use it and refer to it in the next
part
of the logic in the ActionListener.
Gj
On Thu, 3 Dec 2020 at 09:26, Geertjan Wielenga <
geertjan.wiele...@googlemail.com> wrote:
The fact that the ActionListener takes an Object as an argument means
that
the annotations at the top of the class (or in the layer.xml file) will
generate a context-sensitive Action that is sensitive to the Object in
the
argument. The Action will be enabled when the Object is available,
i.e., in
context, thanks to the Lookup.
Gj
On Thu, 3 Dec 2020 at 02:37, Sean Carrick wrote:
Gj,
Hello.
I was looking at your tutorial (old, for NB8.1) for the RSS Reader. I
was especially looking at how you were storing new, user-created
folders
and RSS feed files. However, reading through it, I was getting a little
confused, and want to make sure that I am properly understanding how
your last three code snippets are working together. First, I want to
explain how I am understanding it, then ask my questions of you.
Toward the end of the section titled "Displaying the Node Hierarchy in
the Feed Window, in Step 4, you added code to the end of the
TopComponent's constructor with the BeanTreeView and a try...catch
block.
The two lines that I am particularly referring to are:
FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
Node rssFeedsNode = DataObject.find(rssFeedsFolder).getNodeDelegate();
Down further in the tutorial, you have two code blocks: the first is
the
AddRssAction class and the second is the AddFolderAction class. Both of
these classes' constructors take a DataFolder object as an argument.
Now that I have laid all of that out, here is the way I am
understanding
this, and I would like you to correct me if I am wrong, please.
By creating the FileObject rssFeedsFolder and getting the config file
from FileUtil, when the DataObject.find() method is called, that gets
the rssFeedsFolder object into the constructors of the two Action
classes, correct?
I do not see any other code regarding these Actions and, therefore, am
having trouble understanding how the two Action classes receive their
parameter value. With what I just explained of my understanding in the
paragraph above, am I even close to figuring this out? Or, do I need to
go back to kindergarten and re-learn reading comprehension? ;-}
Regardless of how off I am, I am determined to learn this system. I
appreciate your assistance in getting me moving in the correct
direction.
Cheers,
Sean C.
-
To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
For additional commands, e-mail: dev-h...@netbeans.apache.org
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Re: Question to Clarify Understanding with the DataFolder and FileObject
It is a virtual folder, what you see in the layer file. The virtual folder
is in the virtual filesystem of the NetBeans Platform. You will not see it
anywhere on disk.
Gj
On Thu, 3 Dec 2020 at 23:28, Sean Carrick wrote:
> Gj,
>
> Again, thank you for your gracious assistance. I do, however, have one
> more question about the DataFolder, DataObject, and the layer.xml file.
>
> If I were to create a section in the
> layer.xml file, when the save action is invoked, would that then create
> the folder on disk?
>
> Also, where on disk is that folder created? Is it in the default user's
> data folder? Can I specify somewhere else on disk to create/use the
> custom folder?
>
> I really am trying to understand how the System Filesystem works and how
> it relates to the physical media, when needed. Your tutorials have
> brought me a long way, but seem to cause questions for me and I struggle
> to find the answers.
>
> Thank you again for your assistance, this time in advance. Have a
> wonderful day.
>
> Sean C.
>
> On 12/3/20 2:32 AM, Geertjan Wielenga wrote:
> > Next, since the Object in your scenario is a DataFolder, when a folder is
> > selected, the Action is automatically enabled because the folder has a
> > DataFolder built into its Lookup.
> >
> > Now that the Action is enabled, you have the DataFolder available in the
> > constructor and can refer to it and use it and refer to it in the next
> part
> > of the logic in the ActionListener.
> >
> > Gj
> >
> > On Thu, 3 Dec 2020 at 09:26, Geertjan Wielenga <
> > geertjan.wiele...@googlemail.com> wrote:
> >
> >> The fact that the ActionListener takes an Object as an argument means
> that
> >> the annotations at the top of the class (or in the layer.xml file) will
> >> generate a context-sensitive Action that is sensitive to the Object in
> the
> >> argument. The Action will be enabled when the Object is available,
> i.e., in
> >> context, thanks to the Lookup.
> >>
> >> Gj
> >>
> >> On Thu, 3 Dec 2020 at 02:37, Sean Carrick wrote:
> >>
> >>> Gj,
> >>>
> >>> Hello.
> >>>
> >>> I was looking at your tutorial (old, for NB8.1) for the RSS Reader. I
> >>> was especially looking at how you were storing new, user-created
> folders
> >>> and RSS feed files. However, reading through it, I was getting a little
> >>> confused, and want to make sure that I am properly understanding how
> >>> your last three code snippets are working together. First, I want to
> >>> explain how I am understanding it, then ask my questions of you.
> >>>
> >>> Toward the end of the section titled "Displaying the Node Hierarchy in
> >>> the Feed Window, in Step 4, you added code to the end of the
> >>> TopComponent's constructor with the BeanTreeView and a try...catch
> block.
> >>>
> >>> The two lines that I am particularly referring to are:
> >>>
> >>> FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
> >>>
> >>> Node rssFeedsNode = DataObject.find(rssFeedsFolder).getNodeDelegate();
> >>>
> >>> Down further in the tutorial, you have two code blocks: the first is
> the
> >>> AddRssAction class and the second is the AddFolderAction class. Both of
> >>> these classes' constructors take a DataFolder object as an argument.
> >>>
> >>> Now that I have laid all of that out, here is the way I am
> understanding
> >>> this, and I would like you to correct me if I am wrong, please.
> >>>
> >>> By creating the FileObject rssFeedsFolder and getting the config file
> >>> from FileUtil, when the DataObject.find() method is called, that gets
> >>> the rssFeedsFolder object into the constructors of the two Action
> >>> classes, correct?
> >>>
> >>> I do not see any other code regarding these Actions and, therefore, am
> >>> having trouble understanding how the two Action classes receive their
> >>> parameter value. With what I just explained of my understanding in the
> >>> paragraph above, am I even close to figuring this out? Or, do I need to
> >>> go back to kindergarten and re-learn reading comprehension? ;-}
> >>>
> >>> Regardless of how off I am, I am determined to learn this system. I
> >>> appreciate your assistance in getting me moving in the correct
> direction.
> >>>
> >>> Cheers,
> >>>
> >>> Sean C.
> >>>
> >>>
> >>> -
> >>> To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
> >>> For additional commands, e-mail: dev-h...@netbeans.apache.org
> >>>
> >>> For further information about the NetBeans mailing lists, visit:
> >>> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
> >>>
> >>>
> >>>
> >>>
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
> For additional commands, e-mail: dev-h...@netbeans.apache.org
>
> For further information about the NetBeans mailing lists, visit:
> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
>
>
>
Re: Question to Clarify Understanding with the DataFolder and FileObject
Gj,
Again, thank you for your gracious assistance. I do, however, have one
more question about the DataFolder, DataObject, and the layer.xml file.
If I were to create a section in the
layer.xml file, when the save action is invoked, would that then create
the folder on disk?
Also, where on disk is that folder created? Is it in the default user's
data folder? Can I specify somewhere else on disk to create/use the
custom folder?
I really am trying to understand how the System Filesystem works and how
it relates to the physical media, when needed. Your tutorials have
brought me a long way, but seem to cause questions for me and I struggle
to find the answers.
Thank you again for your assistance, this time in advance. Have a
wonderful day.
Sean C.
On 12/3/20 2:32 AM, Geertjan Wielenga wrote:
Next, since the Object in your scenario is a DataFolder, when a folder is
selected, the Action is automatically enabled because the folder has a
DataFolder built into its Lookup.
Now that the Action is enabled, you have the DataFolder available in the
constructor and can refer to it and use it and refer to it in the next part
of the logic in the ActionListener.
Gj
On Thu, 3 Dec 2020 at 09:26, Geertjan Wielenga <
geertjan.wiele...@googlemail.com> wrote:
The fact that the ActionListener takes an Object as an argument means that
the annotations at the top of the class (or in the layer.xml file) will
generate a context-sensitive Action that is sensitive to the Object in the
argument. The Action will be enabled when the Object is available, i.e., in
context, thanks to the Lookup.
Gj
On Thu, 3 Dec 2020 at 02:37, Sean Carrick wrote:
Gj,
Hello.
I was looking at your tutorial (old, for NB8.1) for the RSS Reader. I
was especially looking at how you were storing new, user-created folders
and RSS feed files. However, reading through it, I was getting a little
confused, and want to make sure that I am properly understanding how
your last three code snippets are working together. First, I want to
explain how I am understanding it, then ask my questions of you.
Toward the end of the section titled "Displaying the Node Hierarchy in
the Feed Window, in Step 4, you added code to the end of the
TopComponent's constructor with the BeanTreeView and a try...catch block.
The two lines that I am particularly referring to are:
FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
Node rssFeedsNode = DataObject.find(rssFeedsFolder).getNodeDelegate();
Down further in the tutorial, you have two code blocks: the first is the
AddRssAction class and the second is the AddFolderAction class. Both of
these classes' constructors take a DataFolder object as an argument.
Now that I have laid all of that out, here is the way I am understanding
this, and I would like you to correct me if I am wrong, please.
By creating the FileObject rssFeedsFolder and getting the config file
from FileUtil, when the DataObject.find() method is called, that gets
the rssFeedsFolder object into the constructors of the two Action
classes, correct?
I do not see any other code regarding these Actions and, therefore, am
having trouble understanding how the two Action classes receive their
parameter value. With what I just explained of my understanding in the
paragraph above, am I even close to figuring this out? Or, do I need to
go back to kindergarten and re-learn reading comprehension? ;-}
Regardless of how off I am, I am determined to learn this system. I
appreciate your assistance in getting me moving in the correct direction.
Cheers,
Sean C.
-
To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
For additional commands, e-mail: dev-h...@netbeans.apache.org
For further information about the NetBeans mailing lists, visit:
https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
-
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Re: Question to Clarify Understanding with the DataFolder and FileObject
Gj,
Thank you very much! I may not have explained myself well, but it seems
that I was understanding what was happening, for the most part. Your
clarification helps me out greatly and I appreciate it very much.
Have a fantastic day, along with everyone else on the list.
Sean C.
On 12/3/20 2:32 AM, Geertjan Wielenga wrote:
Next, since the Object in your scenario is a DataFolder, when a folder is
selected, the Action is automatically enabled because the folder has a
DataFolder built into its Lookup.
Now that the Action is enabled, you have the DataFolder available in the
constructor and can refer to it and use it and refer to it in the next part
of the logic in the ActionListener.
Gj
On Thu, 3 Dec 2020 at 09:26, Geertjan Wielenga <
geertjan.wiele...@googlemail.com> wrote:
The fact that the ActionListener takes an Object as an argument means that
the annotations at the top of the class (or in the layer.xml file) will
generate a context-sensitive Action that is sensitive to the Object in the
argument. The Action will be enabled when the Object is available, i.e., in
context, thanks to the Lookup.
Gj
On Thu, 3 Dec 2020 at 02:37, Sean Carrick wrote:
Gj,
Hello.
I was looking at your tutorial (old, for NB8.1) for the RSS Reader. I
was especially looking at how you were storing new, user-created folders
and RSS feed files. However, reading through it, I was getting a little
confused, and want to make sure that I am properly understanding how
your last three code snippets are working together. First, I want to
explain how I am understanding it, then ask my questions of you.
Toward the end of the section titled "Displaying the Node Hierarchy in
the Feed Window, in Step 4, you added code to the end of the
TopComponent's constructor with the BeanTreeView and a try...catch block.
The two lines that I am particularly referring to are:
FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
Node rssFeedsNode = DataObject.find(rssFeedsFolder).getNodeDelegate();
Down further in the tutorial, you have two code blocks: the first is the
AddRssAction class and the second is the AddFolderAction class. Both of
these classes' constructors take a DataFolder object as an argument.
Now that I have laid all of that out, here is the way I am understanding
this, and I would like you to correct me if I am wrong, please.
By creating the FileObject rssFeedsFolder and getting the config file
from FileUtil, when the DataObject.find() method is called, that gets
the rssFeedsFolder object into the constructors of the two Action
classes, correct?
I do not see any other code regarding these Actions and, therefore, am
having trouble understanding how the two Action classes receive their
parameter value. With what I just explained of my understanding in the
paragraph above, am I even close to figuring this out? Or, do I need to
go back to kindergarten and re-learn reading comprehension? ;-}
Regardless of how off I am, I am determined to learn this system. I
appreciate your assistance in getting me moving in the correct direction.
Cheers,
Sean C.
-
To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
For additional commands, e-mail: dev-h...@netbeans.apache.org
For further information about the NetBeans mailing lists, visit:
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Re: Question to Clarify Understanding with the DataFolder and FileObject
Next, since the Object in your scenario is a DataFolder, when a folder is
selected, the Action is automatically enabled because the folder has a
DataFolder built into its Lookup.
Now that the Action is enabled, you have the DataFolder available in the
constructor and can refer to it and use it and refer to it in the next part
of the logic in the ActionListener.
Gj
On Thu, 3 Dec 2020 at 09:26, Geertjan Wielenga <
geertjan.wiele...@googlemail.com> wrote:
> The fact that the ActionListener takes an Object as an argument means that
> the annotations at the top of the class (or in the layer.xml file) will
> generate a context-sensitive Action that is sensitive to the Object in the
> argument. The Action will be enabled when the Object is available, i.e., in
> context, thanks to the Lookup.
>
> Gj
>
> On Thu, 3 Dec 2020 at 02:37, Sean Carrick wrote:
>
>> Gj,
>>
>> Hello.
>>
>> I was looking at your tutorial (old, for NB8.1) for the RSS Reader. I
>> was especially looking at how you were storing new, user-created folders
>> and RSS feed files. However, reading through it, I was getting a little
>> confused, and want to make sure that I am properly understanding how
>> your last three code snippets are working together. First, I want to
>> explain how I am understanding it, then ask my questions of you.
>>
>> Toward the end of the section titled "Displaying the Node Hierarchy in
>> the Feed Window, in Step 4, you added code to the end of the
>> TopComponent's constructor with the BeanTreeView and a try...catch block.
>>
>> The two lines that I am particularly referring to are:
>>
>> FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
>>
>> Node rssFeedsNode = DataObject.find(rssFeedsFolder).getNodeDelegate();
>>
>> Down further in the tutorial, you have two code blocks: the first is the
>> AddRssAction class and the second is the AddFolderAction class. Both of
>> these classes' constructors take a DataFolder object as an argument.
>>
>> Now that I have laid all of that out, here is the way I am understanding
>> this, and I would like you to correct me if I am wrong, please.
>>
>> By creating the FileObject rssFeedsFolder and getting the config file
>> from FileUtil, when the DataObject.find() method is called, that gets
>> the rssFeedsFolder object into the constructors of the two Action
>> classes, correct?
>>
>> I do not see any other code regarding these Actions and, therefore, am
>> having trouble understanding how the two Action classes receive their
>> parameter value. With what I just explained of my understanding in the
>> paragraph above, am I even close to figuring this out? Or, do I need to
>> go back to kindergarten and re-learn reading comprehension? ;-}
>>
>> Regardless of how off I am, I am determined to learn this system. I
>> appreciate your assistance in getting me moving in the correct direction.
>>
>> Cheers,
>>
>> Sean C.
>>
>>
>> -
>> To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
>> For additional commands, e-mail: dev-h...@netbeans.apache.org
>>
>> For further information about the NetBeans mailing lists, visit:
>> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>>
>>
>>
>>
Re: Question to Clarify Understanding with the DataFolder and FileObject
The fact that the ActionListener takes an Object as an argument means that
the annotations at the top of the class (or in the layer.xml file) will
generate a context-sensitive Action that is sensitive to the Object in the
argument. The Action will be enabled when the Object is available, i.e., in
context, thanks to the Lookup.
Gj
On Thu, 3 Dec 2020 at 02:37, Sean Carrick wrote:
> Gj,
>
> Hello.
>
> I was looking at your tutorial (old, for NB8.1) for the RSS Reader. I
> was especially looking at how you were storing new, user-created folders
> and RSS feed files. However, reading through it, I was getting a little
> confused, and want to make sure that I am properly understanding how
> your last three code snippets are working together. First, I want to
> explain how I am understanding it, then ask my questions of you.
>
> Toward the end of the section titled "Displaying the Node Hierarchy in
> the Feed Window, in Step 4, you added code to the end of the
> TopComponent's constructor with the BeanTreeView and a try...catch block.
>
> The two lines that I am particularly referring to are:
>
> FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
>
> Node rssFeedsNode = DataObject.find(rssFeedsFolder).getNodeDelegate();
>
> Down further in the tutorial, you have two code blocks: the first is the
> AddRssAction class and the second is the AddFolderAction class. Both of
> these classes' constructors take a DataFolder object as an argument.
>
> Now that I have laid all of that out, here is the way I am understanding
> this, and I would like you to correct me if I am wrong, please.
>
> By creating the FileObject rssFeedsFolder and getting the config file
> from FileUtil, when the DataObject.find() method is called, that gets
> the rssFeedsFolder object into the constructors of the two Action
> classes, correct?
>
> I do not see any other code regarding these Actions and, therefore, am
> having trouble understanding how the two Action classes receive their
> parameter value. With what I just explained of my understanding in the
> paragraph above, am I even close to figuring this out? Or, do I need to
> go back to kindergarten and re-learn reading comprehension? ;-}
>
> Regardless of how off I am, I am determined to learn this system. I
> appreciate your assistance in getting me moving in the correct direction.
>
> Cheers,
>
> Sean C.
>
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@netbeans.apache.org
> For additional commands, e-mail: dev-h...@netbeans.apache.org
>
> For further information about the NetBeans mailing lists, visit:
> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
>
>
>
Question to Clarify Understanding with the DataFolder and FileObject
Gj,
Hello.
I was looking at your tutorial (old, for NB8.1) for the RSS Reader. I
was especially looking at how you were storing new, user-created folders
and RSS feed files. However, reading through it, I was getting a little
confused, and want to make sure that I am properly understanding how
your last three code snippets are working together. First, I want to
explain how I am understanding it, then ask my questions of you.
Toward the end of the section titled "Displaying the Node Hierarchy in
the Feed Window, in Step 4, you added code to the end of the
TopComponent's constructor with the BeanTreeView and a try...catch block.
The two lines that I am particularly referring to are:
FileObject rssFeedsFolder = FileUtil.getConfigFile("RssFeeds");
Node rssFeedsNode = DataObject.find(rssFeedsFolder).getNodeDelegate();
Down further in the tutorial, you have two code blocks: the first is the
AddRssAction class and the second is the AddFolderAction class. Both of
these classes' constructors take a DataFolder object as an argument.
Now that I have laid all of that out, here is the way I am understanding
this, and I would like you to correct me if I am wrong, please.
By creating the FileObject rssFeedsFolder and getting the config file
from FileUtil, when the DataObject.find() method is called, that gets
the rssFeedsFolder object into the constructors of the two Action
classes, correct?
I do not see any other code regarding these Actions and, therefore, am
having trouble understanding how the two Action classes receive their
parameter value. With what I just explained of my understanding in the
paragraph above, am I even close to figuring this out? Or, do I need to
go back to kindergarten and re-learn reading comprehension? ;-}
Regardless of how off I am, I am determined to learn this system. I
appreciate your assistance in getting me moving in the correct direction.
Cheers,
Sean C.
-
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