[brailleblaster] Re: How do I get this notifyListeners addListener to work?
- From: "John J. Boyer" <johnjboyer@xxxxxxxxxxxxx>
- To: brailleblaster@xxxxxxxxxxxxx
- Date: Thu, 16 Jun 2011 11:37:58 -0500
What e-mail program are you using? Some of them have their own ideas
about how to handle attachments.
John
On Thu, Jun 16, 2011 at 09:06:15AM -0700, Chris von See wrote:
> I did exactly what you described - attached a single 1.3 MB zip file
> to an email - and got this result from you:
>
> <snip>
> There is an 1.8MB attachment, but it has no file name and is categorized
> a multipa/alternativ I've received zip files bigger than this. There are
> also several other attachments, all small and all with no file names.
> </snip>
>
> Perhaps it was sunspots that caused the problem last time, so I've
> attached the zip to this email. Let's see how it goes through this
> time...
>
> Cheers
> Chris
>
>
>
>
> On Jun 16, 2011, at 8:58 AM, John J. Boyer wrote:
>
> >What is the problem with sending a zip file? I just attach it to my
> >message, and it goes through.
> >
> >John
> >
> >On Thu, Jun 16, 2011 at 08:19:40AM -0700, Chris von See wrote:
> >>I've been trying off-list to send John a zip file containing all of
> >>the SWT stand-alone example source, but for some reason it's not
> >>coming through correctly...
> >>
> >>Attached is the source file for the SWT TextEditor example. It shows
> >>the use of listeners (as anonymous inner classes, I think) and
> >>includes a lot of functionality that may be useful in BrailleBlaster.
> >>
> >>John, I'll keep trying to send you the complete zip - I may need to
> >>use YouSendIt or similar...
> >>
> >>
> >>Cheers
> >>Chris
> >>
> >
> >
> >>
> >>
> >>On Jun 15, 2011, at 7:43 PM, John J. Boyer wrote:
> >>
> >>>Chris,
> >>>
> >>>What I am doing is setting up a Milti-document Inteface (MDI)
> >>>framework.
> >>>This is something that will be wanted eventually, and I am quite
> >>>sure
> >>>that the it will be easier if the framework is present early on. It
> >>>doesn't seem like it should be diffiecult. The WPManager keeps a
> >>>list of
> >>>active documents, which are embodied in instances of
> >>>DocumentManager.
> >>>The user can move amonng the doucuments, as in any word processor.
> >>>The
> >>>request for another document will come from an item in BBMenu, which
> >>>is
> >>>a chile of the active DocumentManager. The new document should not
> >>>itself be a child of this DocumentManager. it should be a child of
> >>>WPManager. So It seemed to me that the ntural way to do this would
> >>>be to
> >>>send on OpenDocument event, which woudl be caught by an OpenDocument
> >>>listener in WPManager. Is this your understanding? Are you trying to
> >>>make things easier for me at this point? That will probably produce
> >>>much
> >>>more difficulty down the road. In any case, I need to master the
> >>>event-listener technique.
> >>>
> >>>I've never been able to get much out of the swt examples page,
> >>>even in
> >>>IE. Instead of just giving links to the examples they want me to
> >>>go to
> >>>the downloads page and then find the examples. I must confess that
> >>>I'm
> >>>really bad at finding anything on the Web.
> >>>
> >>>Another thing I would like to find is a zip file like those for SWT,
> >>>for
> >>>Jface, which contains both source code and a jar.
> >>>
> >>>I don't want to give the impression of being a complainer, but it
> >>>seems
> >>>to me that the Eclipse sites are downright unfriendly. What are they
> >>>thinking of?
> >>>
> >>>John
> >>>
> >>>On Wed, Jun 15, 2011 at 07:04:20PM -0700, Chris von See wrote:
> >>>>If I understand what you're doing correctly, you seem to be making
> >>>>this more complicated than it needs to be. You may want to take a
> >>>>look at the SWT example code available from
> >>>>http://www.eclipse.org/swt/examples.php - there are some pretty
> >>>>nice
> >>>>non-Eclipse demo programs there that can help you decide how
> >>>>best to
> >>>>structure the application.
> >>>>
> >>>>
> >>>>Cheers,
> >>>>Chris
> >>>>
> >>>>
> >>>>On Jun 15, 2011, at 5:33 PM, John J. Boyer wrote:
> >>>>
> >>>>>Yes, I have SelectionListeners on all menu items. When the Opeen,
> >>>>>New or
> >>>>>Import item is selected the listener calls the sendOpenEvent
> >>>>>method in
> >>>>>the DocumentManager, with an int parameter specifyingthe action to
> >>>>>be
> >>>>>taken. This method creates an instance of Event and places the
> >>>>>parameter
> >>>>>in the detail field. It then calls notifyListeners on the
> >>>>>DocumentManager's Shell with SWT.OpenDocument and the event.
> >>>>>
> >>>>>When it started, WPManager used addListener on the Display,
> >>>>>which is
> >>>>>the
> >>>>>only SWT class it has, to add a listener for the OpenDocument
> >>>>>event.
> >>>>>The
> >>>>>handleEvent method in this listener calls the addDocument method
> >>>>>in
> >>>>>the
> >>>>>WPManager. This creates a new instance of DocumentManager and adds
> >>>>>it to
> >>>>>the ArrayList of active documents. However, this never happens.
> >>>>>
> >>>>>It is not necessary to generate an event for the Close menu
> >>>>>selection,
> >>>>>since this process occurs entirely withing the DocumentManager.
> >>>>>The
> >>>>>listener merely sets an exitSelected boolean to true. The normal
> >>>>>event
> >>>>>loop also tests the value of this boolean, and if it is true the
> >>>>>DocumentManager does what is necessary to close the document and
> >>>>>exits.
> >>>>>The addDocument method in the WPManager, which created this
> >>>>>instance
> >>>>>of
> >>>>>DocumentManager then sets its reference in the list of active
> >>>>>documents
> >>>>>to null, so the garbage collector can dispose of it, and then
> >>>>>removes
> >>>>>the reference from the list of active documents.
> >>>>>
> >>>>>John
> >>>>>
> >>>>>dreats
> >>>>>an instan
> >>>>>On Wed, Jun 15, 2011 at 04:05:56PM -0700, Chris von See wrote:
> >>>>>>I'm not sure I completely understand what you did, but what I've
> >>>>>>done
> >>>>>>in the past is add a SelectionListener to the "Open..." menu
> >>>>>>item.
> >>>>>>The listener gets called when the user selects that menu item;
> >>>>>>you
> >>>>>>can
> >>>>>>then create and open a file dialog to allow the user to select
> >>>>>>the
> >>>>>>file and create your XOM tree, views, etc. You can also use a
> >>>>>>SelectionListener on a "Close" menu item to close the active
> >>>>>>document
> >>>>>>and free resources.
> >>>>>>
> >>>>>>Cheers
> >>>>>>Chris
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>On Jun 15, 2011, at 3:47 PM, John J. Boyer wrote:
> >>>>>>
> >>>>>>>In the design for the word processor that I have come up with,
> >>>>>>>it is
> >>>>>>>entered by a call to WPManager from somewhere, the main mehtod
> >>>>>>>now.
> >>>>>>>WPManager creates an instance of DocumentManager which creates
> >>>>>>>instances
> >>>>>>>of BrailleView, SaisyView, BBMenu BBToolbar and BstatusBar.
> >>>>>>>DocumentManager handles everything relating to a single
> >>>>>>>document.
> >>>>>>>When
> >>>>>>>the user choses the Open, New or Import items on the menu it
> >>>>>>>calls
> >>>>>>>notifyListeners on its Shell. WPmanager has previously
> >>>>>>>registered a
> >>>>>>>listener for the IpenDocument event on the display. The listener
> >>>>>>>is
> >>>>>>>supposed to call a method which creates a new document and
> >>>>>>>adds it
> >>>>>>>to an
> >>>>>>>ArrayList of documents. However, the listener never hears
> >>>>>>>anything.
> >>>>>>>What
> >>>>>>>is wrong?
> >>>>>>>
> >>>>>>>Thanks,
> >>>>>>>John
> >>>>>>>
> >>>>>>>--
> >>>>>>>John J. Boyer; President, Chief Software Developer
> >>>>>>>Abilitiessoft, Inc.
> >>>>>>>http://www.abilitiessoft.com
> >>>>>>>Madison, Wisconsin USA
> >>>>>>>Developing software for people with disabilities
> >>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>
> >>>>>--
> >>>>>John J. Boyer; President, Chief Software Developer
> >>>>>Abilitiessoft, Inc.
> >>>>>http://www.abilitiessoft.com
> >>>>>Madison, Wisconsin USA
> >>>>>Developing software for people with disabilities
> >>>>>
> >>>>>
> >>>>
> >>>
> >>>--
> >>>John J. Boyer; President, Chief Software Developer
> >>>Abilitiessoft, Inc.
> >>>http://www.abilitiessoft.com
> >>>Madison, Wisconsin USA
> >>>Developing software for people with disabilities
> >>>
> >>>
> >>
> >
> >
> >--
> >John J. Boyer; President, Chief Software Developer
> >Abilitiessoft, Inc.
> >http://www.abilitiessoft.com
> >Madison, Wisconsin USA
> >Developing software for people with disabilities
> >
> >
>
--
My websites:
GodTouches Digital Ministry, Inc. http://www.godtouches.org
Abilitiessoft, Inc. http://www.abilitiessoft.com
BrailleBlaster http://www.brailleblaster.org
Location: Madison, WI, USA
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