How does this work on a tablet or my new iPhone where there is not a keyboard
to activate the menu?
Philip Bays
Saint Mary's College
Notre Dame, IN 46556
Sent from my iPhone
On Dec 19, 2012, at 4:05 PM, Robert Hanson <[email protected]> wrote:
> Wow, this is great! Almost there, I think.
>
>
> On Wed, Dec 19, 2012 at 12:48 PM, Michael Evans <[email protected]> wrote:
>> Bob et al.,
>> Progress has been made on a popup menu for JSmol. I've implemented
>> PopupMenu, MenuItem, CheckboxMenuItem, and RadioButtonMenuItem, among other
>> things. Check it out:
>>
>> http://www.metallacycle.com/play/netmol/tests/popupMenu/jmolPopupMenu.js
>
> OK! You are way ahead of me!
>
>
>> The demo is still functional as well:
>>
>> http://www.metallacycle.com/play/netmol/tests/popupMenu/popupMenu.html
>>
>> Two things I'm struggling with:
>> 1) What's the difference between a ButtonGroup and a set of
>> RadioButtonMenuItems?
>
> I think it's the same. I think really in JavaScript it's just a set of radio
> buttons with the same name. Be sure to use
>
> applet._id
>
> as a prefix to every name or id so that multiple applets on a page do not
> have the same name or id for anything.
>
>
>> 2) Event handling in general. For example, a checkbox menu item doesn't
>> "know" its parent, so when it's clicked, it can't run commands on its parent
>> applet without bubbling an event up to its parent jmol object. I will
>> continue to work on this, but event handling in JS is not one of my
>> specialties. I'll look into custom events mediated by jQuery, but in the
>> meantime, if there are any JS event experts out there, help would be
>> appreciated! :-)
>
> Actually, it does. What you are missing is that when a checkbox is created,
> the following command sequence is run:
>
> /**
> * @j2sNative
> *
> * if (isRadio) {
> * item = new Jmol.Menu.RadioButtonMenuItem(entry);
> * item.setArmed(state);
> * } else {
> * item = new Jmol.Menu.CheckBoxMenuItem(entry);
> * item.setState(state);
> * }
> * item.setSelected(state);
> * item.addItemListener(this);
> *
> */
>
> So that "addItemListener" is giving the checkbox a reference to the instance
> of org.jmol.awt2d.JSPopup that created it. Store that as jmolPopup in the
> item. Then:
>
> xxxx.jmolPopup.checkBoxStateChanged(xxxx);
>
> Similarly, all normal menu items have:
>
> /**
> * @j2sNative
> *
> * item = new Jmol.Menu.MenuItem(entry);
> * item.addActionListener(this);
> *
> */
>
> (notice "Action" here, not "Item")
> This is going to respond to clicks:
>
> xxxx.jmolPopup.checkMenuClick(xxxx, xxxx.getActionCommand());
>
>
> where getActionCommand() returns "background yellow" should take care of it.
>
> Finally, there are a few items that are special and start with "Focus". These
> also get a mouse listener so that we can track when they are entered and
> exited:
>
> /**
> * @j2sNative
> * if (id != null && id.startsWith("Focus")) {
> * item.addMouseListener(this);
> * id = menu.getName() + "." + id;
> * }
> * item.setName(id == null ? menu.getName() + "." : id);
> */
>
> Then that needs to be set up so that we can run:
>
> item.jmolPopup.checkMenuFocus(item.getName(), item.getActionCommand(),
> true);
> item.jmolPopup.checkMenuFocus(item.getName(), item.getActionCommand(),
> false);
>
> And we should be done!
>
>
> By the way, your comment there that it should be OK to use a null instead of
> removing an item is not right. This could happen extensively, and we need to
> actually remove that array element.
>
> Bob
>
>
> --
> Robert M. Hanson
> Larson-Anderson Professor of Chemistry
> Chair, Chemistry Department
> St. Olaf College
> Northfield, MN
> http://www.stolaf.edu/people/hansonr
>
>
> If nature does not answer first what we want,
> it is better to take what answer we get.
>
> -- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
>
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