Coherent

I’m having trouble catching up after my mini-vacation, but I cleaned up the key-value coding/observing code enough to post an example. This example also uses my DHTML Bindings library (a blatant rip off adaptation of Apple’s Cocoa Bindings). The bindings library really isn’t ready for prime-time; it’s still missing features like binding to tables and other HTML elements, but I think it gives you a good idea of how the library will ultimately work.

And talk about unobtrusive.

This is about as unobtrusive as you can get. Check out the HTML:

<form>
    <select id="peopleList" size="4" contentKeyPath="people"
        displayValuesKeyPath="people.fullName"
        selectedIndexKeyPath="selectedIndex"
        selectedObjectKeyPath="selectedPerson"></select>

    <fieldset>
        <legend>Person Detail</legend>
        First Name: <input valueKeyPath="selectedPerson.firstName"/><br />
        Last Name: <input valueKeyPath="selectedPerson.lastName"/><br />
        Email: <input valueKeyPath="selectedPerson.email"/><br />
        URL: <input valueKeyPath="selectedPerson.url"/>
    </fieldset>

    <input type="button" onclick="addPerson(); return false;" value="Add Person"/>
    <input type="button" onclick="deleteSelection(); return false;"
        value="Delete Person" enabledKeyPath="selectedIndex(SelectedIndexToBoolean)"/>

</form>

Of course, the additional attributes means this really won’t validate as XHMTML. But I’m OK with that. And if you really must validate, you can use a custom DTD as explained in A List Apart.

So go check out the DHTML Bindings example.