// $Id$

if (!Drupal.decisions) {
  Drupal.decisions = {};
}

// Update maxchoices, called when adding and removing choices
Drupal.decisions.maxChoices = function(numChoices) {
  var selected = $("#edit-settings-maxchoices").val();
  var label = $("#edit-settings-maxchoices").prev();
  // Hard-code the HTML (not clone) as .html() doesn't work for select fields in IE and Opera.
  var newMaxChoices = '<select id="edit-settings-maxchoices" class="form-select" name="settings[maxchoices]">';
  // Build the options
  for (var i = 0; i <= numChoices; i++) {
    var name = (i ? i : Drupal.settings.decisions.noLimit);
    newMaxChoices += '<option ';
    // Set the option user had selected
    if (i == selected) {
      newMaxChoices += 'selected="selected" ';
    }
    newMaxChoices += 'value="'+ i +'">'+ name +'</option>';
  }
  newMaxChoices += '</select>';
  // Remove old maxchoices
  $("#edit-settings-maxchoices").remove();

  label.after(newMaxChoices);

	$("#edit-choice-choices").val(numChoices);
};

// Click event for Remove link, called on pageload and when Add choice is clicked
Drupal.decisions.removeChoiceClick = function() {
  $("a.remove-choice").unbind().click(function() {
		var currentChoice = $(this).parent();
    var otherChoices = currentChoice.siblings(':has(input.choices)');
		// Allow deletion of current Choice only if at least two other options still remain
    if (otherChoices.length > 1) {
			// Get next candidate for deletion and set the focus at its Remove link
			//var nextChoice = currentChoice.next(':has(input.choices)');
			//if (nextChoice.length == 0) {
			//	var nextChoice = currentChoice.prev();
			//}
      // nextChoice.find('.remove-choice').focus();
    	// Remove choice 
			currentChoice.remove();
			// Give each label its correct number
			var i = 1;
			$("input.choices").prev().each(function() {
				$(this).html($(this).html().replace(/\d+/g, i++));
			});
			Drupal.decisions.maxChoices(i - 1);
		}
		else {
			alert(Drupal.settings.decisions.noRemove);
		}
  });
};

Drupal.decisions.nodeFormAutoAttach = function() {
  // This code is used on the node edit page and the content-type settings page.

  if ($("div.poll-form").length == 0) {
    // We're just on the settings page.
    return;
  }

  // Hide "need more choices" checkbox
  $("#edit-choice-morechoices-wrapper").hide();

  // Insert Remove links
  $('<a class="remove-choice">'+ Drupal.settings.decisions.remove +'</a>').insertAfter("input.choices");
  Drupal.decisions.removeChoiceClick();

  // "Backup" of the first choice
  var newChoice = $("input.choices:first").parent().clone();

  // Keep track of the highest choice id to use.
  var highestId = 0;
  $("input.choices").each(function() {
    var id = parseInt($(this).attr("id").match(/\d+/));
    if (id > highestId) {
      highestId = id;
    }
  });

  $('<a class="add-choice" href="#">'+ Drupal.settings.decisions.addChoice +'</a>').insertAfter("#edit-choice-morechoices-wrapper").click(function() {
    var numChoices = $("input.choices").length + 1;
    highestId++;
    // If all choices are removed, use a "backup" of the first choice, else clone the first.
    newChoice = ($("input.choices:first").parent().html() 
			? $("input.choices:first").parent().clone() 
			: newChoice);
    newChoiceInput = $("input", newChoice);
    newChoiceLabel = $("label", newChoice);
    // Replace choice name, id and label reference with the new choice number
    newChoice.attr("id", newChoice.attr("id").replace(/\d+/, highestId));
    newChoiceInput.attr("name", newChoiceInput.attr("name").replace(/\d+/, highestId));
    newChoiceInput.attr("id", newChoiceInput.attr("id").replace(/\d+/, highestId));
    newChoiceLabel.attr("for", newChoiceLabel.attr("for").replace(/\d+/, highestId));
    // Replace the label to use a more accurate count of choices.
    newChoiceLabel.html(newChoiceLabel.html().replace(/\d+/g, numChoices));
    // Clear the value, insert and fade in.
    newChoiceInput.val("").end().insertBefore("#edit-choice-morechoices-wrapper").fadeIn();
		// Set focus on new choice input
    newChoiceInput.focus();
    // Update hidden form values
    $("#edit-changed").val($("#edit-changed").val() + 1);

    Drupal.decisions.removeChoiceClick();
    Drupal.decisions.maxChoices(numChoices);

    return false;
  });
};

// Global Killswitch
if (Drupal.jsEnabled) {
  $(document).ready(function() {
    Drupal.decisions.nodeFormAutoAttach();
  });
}