Trying to understand how to add an "ex:centerDate" command to Exhibit Timeline

[Harry Forsdick]

Hi.  My name is Harry Forsdick and I am new to this group, although I've been around since the start of the ARPANet.  I am pretty good at HTML, CSS, Javascript and php.

In http://bit.ly/KIpZBs I described my problem to the simile-widgets group.  I have received no responses to that post.  Now I have discovered the existence of this group and have also refined my question and terminology a little.

I think what I would like to do is create an ed:centerDate="date" command.  Someone has already referred me to a field named "centersOn" that is used in the Timeline.createBandInfo function -- but I don't know if the setting of this field is brought out to an ex: command. 

OK.  I have several questions:

1. Is there a place where ALL of the commands in the "ex" namespace are listed and defined?  I would first like to understand if there is something like what I want to do already defined.
   
   
2. Do you have an idea (or someone I can ask) about what I will need to do to create this extension?  I.e., the names and their source file names of commands that are similar to the command I want to create so that I can learn by example.
   
   
3. Is there any description of what you have to do in general to extend the sources to define a new command within the ex namespace?

Thanks,

-- Harry

[Ryan Lee]

Hi Henry,

You might want to just re-post this revision of your questions on the
general list as a self reply. This isn't a good venue for it.

I can try to tackle it there; I've been unavailable for a few months for
various reasons but am back to looking out for Exhibit as part of my
normal routine. One of my longer, simmering tasks is to look over
recent list traffic for unanswered questions.

On 2012-05-08 15:18 , Harry Forsdick wrote:
> Hi. My name is Harry Forsdick and I am new to this group, although I've
> been around since the start of the ARPANet. I am pretty good at HTML, CSS,
> Javascript and php.
>
> In http://bit.ly/KIpZBs I described my problem to the simile-widgets group.
> I have received no responses to that post. Now I have discovered the
> existence of this group and have also refined my question and terminology a
> little.
>
> I think what I would like to do is create an ed:centerDate="date" command.
> Someone has already referred me to a field named "centersOn" that is used
> in the Timeline.createBandInfo function -- but I don't know if the setting
> of this field is brought out to an ex: command.
>
> OK. I have several questions:
>

> 1. Is there a place where ALL of the commands in the "ex" namespace are

> listed and defined? I would first like to understand if there is something
> like what I want to do already defined.
>

> 2. Do you have an idea (or someone I can ask) about what I will need to

> do to create this extension? I.e., the names and their source file names
> of commands that are similar to the command I want to create so that I can
> learn by example.
>

> 3. Is there any description of what you have to do in general to extend

[David Karger]

Harry, simile-widgets-dev is for low-level development discussions and
commit messages, not a useful place for user support. simile-widgets is
the right list, it's just that there's nobody specifically tasked with
support, so it's whatever you get in people's free time.

The best (as in only) resource for documentation of exhibit is the wiki
(http://simile-widgets.org/wiki/Exhibit). It contains as much
documentation as we've been able to assemble. If you discover anything
missing, remember it's a wiki---please add it so the next person has an
easier time!

On 05/08/2012 06:18 PM, Harry Forsdick wrote:
> Hi. My name is Harry Forsdick and I am new to this group, although I've
> been around since the start of the ARPANet. I am pretty good at HTML, CSS,
> Javascript and php.
>
> In http://bit.ly/KIpZBs I described my problem to the simile-widgets group.
> I have received no responses to that post. Now I have discovered the
> existence of this group and have also refined my question and terminology a
> little.
>
> I think what I would like to do is create an ed:centerDate="date" command.
> Someone has already referred me to a field named "centersOn" that is used
> in the Timeline.createBandInfo function -- but I don't know if the setting
> of this field is brought out to an ex: command.
>
> OK. I have several questions:
>

> 1. Is there a place where ALL of the commands in the "ex" namespace are

> listed and defined? I would first like to understand if there is something
> like what I want to do already defined.
>

> 2. Do you have an idea (or someone I can ask) about what I will need to

> do to create this extension? I.e., the names and their source file names
> of commands that are similar to the command I want to create so that I can
> learn by example.
>

> 3. Is there any description of what you have to do in general to extend

[David Karger]

As for what you'll need to edit, you'll probably be looking at the time
extension, which can be found in src/webapp/api/extensions/time/scripts
of the exhibit codebase.