[Xerte] Re: Xerte 2 : Combo box value is defaulting to "" why?

[Kemp Johnathan]

I have tried both

<narPlayback type="ComboBox" label="Narration Playback" options="On user
request,On page load" data="userRequest,pageLoad" default="On user request"
width="150" optional="true"/>

and

 <narPlayback type="ComboBox" label="Narration Playback" options="On user
request,On page load" data="userRequest,pageLoad" default="userRequest"
width="150" optional="true"/>

The result is the same in both cases, the default is ignored. As described
earlier. When the optional parameter is added it receives a value of "" .
Selection of the first option leaves the value at "". Once any option other
than the first option is selected the matching value in the data list is
assigned. After that point selection of the first option results in the
correct value for the first option being assigned.

I have tested this with the page's xml file open in Flash Develop and
watched the contents of the xml file change as the wizard is closed after
each test action in the wizard.

Kind regards

Johnathan

On 11 April 2011 16:03, Julian Tenney <Julian.Tenney at nottingham.ac.uk>wrote:

> You need to add the default value to the value in options, not data.
>
>
>
> So in this case default=”On user request”
>
>
>
> *From:* xerte-bounces at lists.nottingham.ac.uk [mailto:
> xerte-bounces at lists.nottingham.ac.uk] *On Behalf Of *Kemp Johnathan
> *Sent:* 11 April 2011 15:11
> *To:* Xerte discussion list
> *Subject:* [Xerte] Re: Xerte 2 : Combo box value is defaulting to "" why?
>
>
>
> Given the xwd file content as
>
>
>
> <wizard>
> <!--GAP FILL
> INTERACTION-------------------------------------------------------->
> <gapFill hint="An interaction for creating a drag and drop gap-fill
> exercise.">
>
> <text type="TextArea" height="100" label="Introductory Text"/>
> <passage type="TextArea" height="150" label="Gap Fill Text"/>
> <interactivity type="ComboBox" label="Interactivity" options="Drag
> Drop,Fill in Blank" width="100"/>
> <feedback type="TextArea" height="50" label="Feedback"/>
> <panelWidth type="ComboBox" label="Panel Width"
> options="Small,Medium,Large,Full" width="100"/>
>
> <narration type="media" label="Narration" optional="true"/>
> <narPlayback type="ComboBox" label="Narration Playback" options="On user
> request,On page load" data="userRequest,pageLoad" width="150"
> optional="true"/>
> <noise type="TextArea" height="50" label="Distractors" optional="true"/>
> </gapFill>
>
> </wizard>
>
>
>
> If the optional parameter Narration Playback is not added then narPlayback
> has a value of undefined
>
>
>
> If the optional parameter Narration Playback is added then narPlayback has
> a value of ""
>
>
>
> Only once a combo box option other than the first option is selected by the
> user does narPlayback get a value from the data list. So to actually give
> narPlayback a value of "userRequest" the user would have to select first the
> option "On page load" (giving narPlayback a value of "pageLoad"), then
> select the option "On user request" (giving narPlayback the value of
> "userRequest")
>
>
>
> If the parameter was not an optional one then a value could be supplied in
> the xml file which would then act as the default value. Since the parameter
> is optional this is not appropriate.
>
>
>
> I tried adding a parameter to the xwd declaration default="userRequest" but
> this did not do anything.
>
>
>
> Kind regards
>
>
>
> Johnathan
>
>
>
> On 11 April 2011 11:00, Julian Tenney <Julian.Tenney at nottingham.ac.uk>
> wrote:
>
> If you add the default value in the .xwd then that should be the value the
> property is instantiated in the xml as. You should always get a valid value,
> even if you don’t touch the drop down at all.
>
>
>
> No?
>
>
>
> *From:* xerte-bounces at lists.nottingham.ac.uk [mailto:
> xerte-bounces at lists.nottingham.ac.uk] *On Behalf Of *Kemp Johnathan
> *Sent:* 06 April 2011 17:28
>
>
> *To:* Xerte discussion list
> *Subject:* [Xerte] Re: Xerte 2 : Combo box value is defaulting to "" why?
>
>
>
> "I think default should be On Page Load (the label) rather than pageLoad
> (the data)."
>
>
>
> I interpreted (perhaps incorrectly) that what you were saying here was that
> rather than trying to pass a default value from the xwd file, I should
> include in the script that received the data e.g. getPageID code to test for
> a null value.
>
>
>
> Since I was setting up a combo box to allow a user to select between
> playing narration on page load or on user request I simply changed the order
> of the options around so that playing on page load was the second option.
> Action only needed to be taken if the second option was selected and
> selecting the second option always returned the same value (whereas
> selecting the first option might return "" or "onUserRequest". So it just
> kept the testing simpler.
>
>
>
> My experience during testing was that with respect to a combo box
> specifying an optional property
>
> 1. No optional property added : property value = undefined.
>
> 2. Optional property added and wizard closed without selection of a value :
> property value = ""
>
> 3. Optional property added and first option selected : property value = ""
>
> 4. Optional property added and second option selected : property value =
> "second option value"
>
> 5. Optional property added and second option selected then first option
> selected : property value = "first option value"
>
>
>
> Kind regards
>
>
>
> Johnathan
>
>
>
> On 6 April 2011 16:21, Julian Tenney <Julian.Tenney at nottingham.ac.uk>
> wrote:
>
> Can do that, yes, if it doesn’t already work? I know some controls take
> default values, precisely because when an optional attribute is added, it
> adds a null value: did you try what I suggested? This code from the wizard
> suggest all optional properties will handle a default value.
>
>
>
> //add optional properties
>
> addPropListener = new Object();
>
> addPropListener.click = function(obj){
>
>
>
>        if
> (wizard.nfoObject.wizard[tree.selectedNode.nodeName][optProps.selectedItem.data].defaultValue
> != undefined){
>
>               tree.selectedNode.attributes[optProps.selectedItem.data] =
> wizard.nfoObject.wizard[tree.selectedNode.nodeName][optProps.selectedItem.data].defaultValue;
>
>        } else {
>
>               tree.selectedNode.attributes[optProps.selectedItem.data] = ""
>
>        }
>
>        tree.dispatchEvent({target:tree, type: "change"});
>
> }
>
> addProp.addEventListener('click', addPropListener);
>
>
>
> *From:* xerte-bounces at lists.nottingham.ac.uk [mailto:
> xerte-bounces at lists.nottingham.ac.uk] *On Behalf Of *Kemp Johnathan
> *Sent:* 06 April 2011 15:29
> *To:* Xerte discussion list
> *Subject:* [Xerte] Re: Xerte 2 : Combo box value is defaulting to "" why?
>
>
>
> Thanks for your help.
>
>
>
> It seems strange to me that a combo box / drop down menu should default to
> returning "" rather than the value of the first element in the list.
>
>
>
> Since the xwd file provides the data for the construction of the wizard, I
> guess the behaviour of the wizard is governed by the code that processes the
> xwd file and presents the wizard form to the user, and that this is a part
> of the core Xerte code. Would it be possible to update the code so that a
> combo box when run could have either a default value specified in the xwd
> file or alternatively that it just defaulted to returning the value of the
> first item in the list unless one of the other items had been selected?
>
>
>
> Kind regards
>
>
>
> Johnathan
>
>
>
> On 5 April 2011 15:09, Julian Tenney <Julian.Tenney at nottingham.ac.uk>
> wrote:
>
> I think default should be On Page Load (the label) rather than pageLoad
> (the data).
>
>
>
> *From:* xerte-bounces at lists.nottingham.ac.uk [mailto:
> xerte-bounces at lists.nottingham.ac.uk] *On Behalf Of *Kemp Johnathan
> *Sent:* 05 April 2011 15:07
> *To:* Xerte discussion list
> *Subject:* [Xerte] Xerte 2 : Combo box value is defaulting to "" why?
>
>
>
> Hello Xerte team,
>
>
>
> As far as I can tell this line is set up like many other optional property
> lines and I don't recall hitting this problem before
>
>
>
> In an xwd file I have the optional property
>
>
>
> <narPlayback type="ComboBox" label="Narration Playback" options="On page
> load,On user request" data="pageLoad,userRequest" default="pageLoad"
> width="150" optional="true"/>
>
> When the page wizard is opened and the Narration Playback property added
> and the page wizard closed, the value of narPlayback changes from undefined
> to ""
>
> If the page wizard is re-opened the combo box displays the selected value
> as "On page load".
>
> Clicking on the value "On page load" does not change the value from "" to
> "pageLoad".
>
>
>
> The only way I can actually set the value of narPlayback to "pageLoad" is
> to select the alternative option from the combo box i.e. "On user request"
> and then to select "On page load"
>
>
>
> What am I missing here?
>
> What do I need to do to ensure that when the optional property is added it
> receives the default value of "pageLoad"?
>
>
>
> Kind regards
>
>
>
> Johnathan
>
>
>
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