[Xerte] Re: . Xerte 2.n - Page Wizards (April 2011 release)
Dave Burnett
d_b_burnett at hotmail.com
Thu Apr 21 16:37:05 BST 2011
Just being odious.
Did you do a global search for learningObject after?
I have found to my chagrin that
something.more and something[0].more
will both work in some cases, but in others you get strange results (array vs array index I guess).
Date: Thu, 21 Apr 2011 16:22:51 +0100
From: johnathan.kemp at ntlworld.com
To: xerte at lists.nottingham.ac.uk
Subject: [Xerte] Re: . Xerte 2.n - Page Wizards (April 2011 release)
I have just performed a few tests.
I took the following Page WizardsSummaryImage ViewerQuiz
For each one I unzipped the page wizard, edited the .xml file to remove the learning object tags and any leading spaces, edited the .rml file by performing a search and replace on ".learningObject[0]." replacing it with "."
so that lines such as
align = pageIcon.templateData.learningObject[0].quiz[0].align;
became
align = pageIcon.templateData.quiz[0].align;
The xwd files were not altered in any way.
The modified files were then rezipped into Page Wizard .xcp files and the wizards used in a new Xerte project.
The summary page appeared to work correctly.
The quiz page wizard failed to perform correctly in that when the quiz item was selected in the left panel, the quiz properties were displayed in the right panel but the link to add a new question was not displayed. When the question option was selected in the left panel the question properties were displayed in the right panel but only the link to add a new option was displayed, there was no link to add a new question.
The image viewer wizard failed to display properly - whilst the wizard appears to work correctly, when the wizard is opened spurious entries appear in the left panel as shown in the attached jpg file.
I have no idea what could be causing these side effects, however they appear to be consistent across each page wizard. That is to say that if I create two quiz pages, they both fail to offer the link to add a new question. If I create additional image summary pages they each display the same strange entries in the left panel of the wizard.
Kind regards
Johnathan
On 21 April 2011 15:45, Dave Burnett <d_b_burnett at hotmail.com> wrote:
Maybe a <learningObject> tag hiding out in an .rlm or something?
Date: Thu, 21 Apr 2011 15:09:33 +0100
From: johnathan.kemp at ntlworld.com
To: xerte at lists.nottingham.ac.uk
Subject: [Xerte] Re: . Xerte 2.n - Page Wizards (April 2011 release)
We looked at leaving out <learningObject> in the xml in the early days of Page Wizards.
I can't remember the details fully but I know it caused problems. I think, though could be wrong on this, that one Page Wizard based page in a project worked fine, but once you had a project with several Page Wizard based pages in it set up without <learningObject> in the xml then things started to go wrong. There was some conflict taking place.
Kind regards
Johnathan
On 21 April 2011 14:04, Julian Tenney <Julian.Tenney at nottingham.ac.uk> wrote:
You don’t have to have <learningObject/> in your xml though. You have separate xml files for each model? Then make the root the page node, not <learningObject>
Or am I missing something?
We are probably due a zip of things. Unless we get any more feedback, we’ll go ahead.
From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Kemp Johnathan
Sent: 21 April 2011 14:00
To: Xerte discussion list
Subject: [Xerte] Re: . Xerte 2.n - Page Wizards (April 2011 release)
I am always a bit wary of changes in subversions in that things may be a little volatile, something being modified may then lead to side effects being found and then further changes resulting. Or alternatively one good idea leads to another and further improvements are made. I prefer to wait until things are stable and then make all the changes that have taken place available in a new release of the Page Wizards.
My standard procedure is to take a new release of Xerte when it is made officially available and to create an empty Page Templates based project. I keep a similar project from the previous version and use this as a base line for comparison. I then compare both project folders using win merge which highlights all the changes for me in each individual file.
I can then update the relevant page wizard files one file at a time to implement the changes I see in the latest Xerte release. The biggest problem is likely to occur when a significant change to the .rlt file is made as this will reflect code that many different page templates may call upon. This is why thus far I have limited the Page Wizards to the Page Templates and not extended them to cover any of the other project wide templates.
What I find difficult sometimes is to identify when a new release has taken place as sometimes the last update date on the Xerte web site may not be updated, or version numbers displayed in the version information may not be up to date.
I have read in the mailing list of a forthcoming release of Xerte On-line toolkits and am bracing myself now for a new release of desktop Xerte, in anticipation that it may create a fair bit of maintenance for the page wizards.
I recall a while back there being some discussion regarding looking into how the PageTemplates project wide template and the Page Wizards could share the same set of files, this would significantly reduce the maintenance burden of the Page Wizards. The sample code below shows the key issues in achieving this.
// code from getPageId from a typical page wizard
pageIcon = icon.parentNode.clip();
//myXML = new XML(extXML.firstChild.childNodes[rootIcon.getPageIndex() - pgOffset]);
//pageIcon.templateData = myXML.toObject();
pageIcon.templateData = pageIcon.extXML.toObject();
//rootIcon.setTitleText(templateData.learningObject[0].name);
if (pageIcon.templateData.learningObject[0].dragDropLabel[0].narration != undefined){
narration = pageIcon.templateData.learningObject[0].dragDropLabel[0].narration;
rootIcon.broadcast('showAudio');
nar.play();
}The blue code is needed for PageTemplates use and the red for Page Wizards use
I would have thought it might be possible to cover everything except for the inclusion of ".learningObject[0]" insertions by some kind of project wide flag and an if else block that tested the flag condition.
Is there any way that pageIcon.templateData could be defined for Page Wizards so that it included the ".learningObject[0]" so that it does not need to be referenced every time a call to external xml data is made? If so this could then be included in the above mentioned if else block and the rest of the code could stand unchanged.
Kind regards
Johnathan
On 21 April 2011 11:35, Julian Tenney <Julian.Tenney at nottingham.ac.uk> wrote:Do you watch the subversion rss feeds?
http://code.google.com/feeds/p/xerte/updates/basic
That’s probably the best way of being kept in the loop of changes. I try and comment them. If there is no comment it’s usually a smaller bug fix rather than a change. If you keep your svn synched up you’ll see the files that have changed on each update. If it looks like something you ought to be aware of, and can’t see what’s changed then send me a mail.
From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Kemp Johnathan
Sent: 21 April 2011 11:32
To: Xerte discussion list
Subject: [Xerte] Re: . Xerte 2.n - Page Wizards (April 2011 release)
Hello Deborah, Thanks for the idea of adding the optional automatic narration parameter, I will aim to add it to all the page wizards that use narration in the next release.
I remember some discussion on the mail list that suggested that there may be some changes to the code that is used to implement narration, but as yet the current version of Xerte still uses the same code. Hence I have made no changes to narrationHandler.rlm. Should there be any changes to how the PageTemplates project wide template delivers narration in a future release then there may be an update to narrationHandler.rlm.
New Page Wizards cannot update existing pages in Xerte projects, as a Page Wizard is only used as a source of information by Xerte from which to create a new page, so existing pages are unaffected by an update to the Page Wizards.
The changes to a Page Wizard that provide support for optional automatic narration are all within the code of the page wizard (an extra line in the xwd file to implement the optional parameter and a small change to the getPageId code block that adds an extra "if" condition to the section that implements narration) so no change to the narrationHandler is required.
Adding auto Narration to any existing page that offers narration
If you wanted to add auto Narration to an existing page in one of your projects then this would be a simple 2 step process
Step 1 - add the optional parameter "narPlayback" to the xwd file. Simply open the xwd file in your favourite editor (not a word processor) - I use FlashDevelop and insert the line below, after the narration optional parameter, then save your change.
<narPlayback type="ComboBox" label="Narration Playback" options="On user request,On page load" data="userRequest,pageLoad" defaultValue="On user request" width="150" optional="true"/>
Step 2 - add an additional "if" block to the narration code in getPageId. Do this in Xerte by expanding the page structure and selecting the getPageId script icon.
// Old page version - no auto narration option
if (pageIcon.templateData.learningObject[0].modelAnswer[0].narration != undefined){
narration = pageIcon.templateData.learningObject[0].modelAnswer[0].narration;
rootIcon.broadcast('showAudio');
} // sample version from new version of gapFill Page Wizard
if (pageIcon.templateData.learningObject[0].gapFill[0].narration != undefined){
narration = pageIcon.templateData.learningObject[0].gapFill[0].narration;
rootIcon.broadcast('showAudio');
if (pageIcon.templateData.learningObject[0].gapFill[0].narPlayback != undefined && pageIcon.templateData.learningObject[0].gapFill[0].narPlayback == "pageLoad"){
nar.play();
}
} The bit shown in blue above could be added to any page wizard that offers narration, you would just need to edit the references to the page wizard name to match the current page wizard, e.g. for modelAnswer code shown earlier would become
if (pageIcon.templateData.learningObject[0].modelAnswer[0].narration != undefined){
narration = pageIcon.templateData.learningObject[0].modelAnswer[0].narration;
rootIcon.broadcast('showAudio'); if (pageIcon.templateData.learningObject[0]. modelAnswer [0].narPlayback != undefined && pageIcon.templateData.learningObject[0]. modelAnswer [0].narPlayback == "pageLoad"){
nar.play();
}
}That should give your page auto narration option capability. Note the first two lines shown above are actually all one long line.
Updating an existing page to use the new version of a Page Wizard
If you wanted to update a learning object to take advantage of new features in a Page wizard then you could try the following.
Given an existing page called currentPage with its files saved in folder pages / currentPage
1 . Create a new page using the new version of the Page Wizard saving its files to pages / newPage
this would give you a folder pages / newPage containing the Page Wizard's .xml, .xwd and .rlm files
2. Rename the .xml file to something like orig.xml
3. Copy the .xml file from pages / currentPage to pages / newPage This should give you a new copy of your original page that uses the new code for the page, has the new xwd file but benefits from all the settings of your original page.
But a word of warning. This should work in most instances of new page wizards, one thing could cause a problem.
If the new Version of the page wizard includes any new parameters that are NOT optional.
If the new version of the Page Wizard includes a non-optional parameter that did not exist in the previous version then the wizard may malfunction. To resolve the malfunction look in the original xml file (renamed to orig.xml above and identify the missing parameters. These will need to be copied into the active xml file i.e the copy from your original page.
Whether it is worth updating a page will probably depend on the changes that the new wizard introduces.
Hope this helps to answer your questions.
Kind regards Johnathan
PS. Don't worry about asking silly questions - just ask for clarification if my answers are not adequate to meet your needs.
On 20 April 2011 11:20, Deborah Delin <admin at strivney.com> wrote:
Hi Jonathan, Thanks very much for the new Page Wizards release. Great to have an optional parameter to specify automatic narration!
Sorry if this is a silly question: I have downloaded the new release and replaced the files in my Xerte folder, but, in order for existing learning objects to be affected by the changes in the new release, do I have to re-create the learning objects from scratch? The release didn't contain a new narration handler - wouldn't I need to add an updated narration handler to the rlo?
Thanks in advance for your reply.
--
Deborah
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