Not necessarially. If the user selects an item in the right list and one or more in the left list, then the items from the left list are inserted below the selected item in the left list.

In your example of swaping items 3 & 4 in the right list, it becomes a two step process.

  1. Select item 3 in right list, click "move left" button.

    The screen is re-drawn with item from position 3 at the bottom of the left hand list.

  2. Select the bottom item in the left list, select the third item in the right list, click "move right".

    The list is re-drawn with the previously third item moved below the previously 4th item.

    The rest of the list remains in situ.

It's actually much harder to describe than do, but I guess that's one reason for not using it. Indicating how to use it to your average (impatient) user.

You can also code the logic of the switching from one to the other into javascript associated with the buttons if server hits is a concern, and you can guarentee your users will have js turned on. You could even get clever and have the buttons use javascript if available or submit to the server if not. Just a thought:)

Nah! You're thinking of Simon Templar, originally played (on UKTV) by Roger Moore and later by Ian Ogilvy

In reply to Re: Re: Re: User Interface - Arranging a list in HTML by BrowserUk
in thread User Interface - Arranging a list in HTML by oakbox

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.