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RememberEditPosition

Questions answered by this recipe

Note that the NotSavedWarning recipe includes a feature similar to this one.

Quoting JL in PITS:01019:

Description

Return the editing textarea to the previous position when previewing a page.

To implement

1. Add the following to your config file:

if ( $action == 'edit' ) {
  $InputTags['e_scrolltop'][':html'] = 
    "<input type='hidden' name='prev_scroll' id='prev_scroll' value='".
    intval(@$_POST['prev_scroll'])."'/>";
  $HTMLHeaderFmt[] = "<script type='text/javascript'>
    function addEvent( obj, evt, fn ) {
      if (obj.addEventListener) obj.addEventListener( evt, fn, false );
      else if (obj.attachEvent) obj.attachEvent( 'on'+evt, fn );
    }
    var ps;
    addEvent( window, 'load', function() {
      ps = document.getElementById('prev_scroll');
      if ( ps.value > 0 ) document.getElementById('text').scrollTop = ps.value;
      addEvent( ps.form, 'submit', function() { ps.value = ps.form.text.scrollTop; } )
    } );
    </script>";
}

2. Add the directive (:input e_scrolltop:) just after (:input e_form:) on your Site.EditForm page.

Notes

As this is mostly implemented using JavaScript, you may need to customise the script if you're already including a separate Javascript file and/or using a different event handler adder in your setup.

In quick testing, the script appears to work in everything from at least IE6 onwards.

See Also

• PITS.01019  Store the position of scrollbar of textarea when preview
• NotSavedWarning has a similar feature built-in. (Warn authors when they move away from a page without saving it; optionally request an edit summary or an author name)

Contributors

• Idea: JL
• Execution: Eemeli Aro
• Petko is the maintainer of this recipe.

Comments

This is cool...but does not seem to work in IE6 or FF3... I think I have installed as prescribed. I am using fixflow skin. When I edit a page, the var "ps" is always null and gives an error on the "if ( ps.value > 0 )" line. JJ 08/03/2009

Nice, thank you! --SteP December 14, 2009

Does someone have this cookbook working with (vista+)IE8 (and how ?) ? I don't (though it's working with Vista+Google Chrome and with XP+IE6 and with XP+Opera 9.64). Thank you.
gb December 16, 2009, at 04:48 PM