MediaWiki:Gadget-Edittools.js

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/**
 * EditTools support: add a selector, change <a> into buttons.
 * The special characters to insert are defined at [[MediaWiki:Edittools]].
 *
 * @author Arnomane, 2006 (on the commons.wikimedia.org/wiki/MediaWiki:Edittools.js)
 * @author Kaganer, 2007 (adapting to www.mediawiki.org)
 * @author Krinkle, 2012
 * @source www.mediawiki.org/wiki/MediaWiki:Gadget-Edittools.js
 * @revision 2012-02-29
 */
/*jslint browser: true*/
/*global jQuery, mediaWiki*/
(function ($, mw) {
	"use strict";

	var conf, editTools, $sections;

	conf = {
		initialSubset: window.EditTools_initial_subset === undefined ? window.EditTools_initial_subset : 0
	};

	editTools = {

		/**
		 * Creates the selector
		 */
		setup: function () {
			var $container, $select, initial;

			$container = $('#mw-edittools-charinsert');
			if (!$container.length) {
				return;
			}
			$sections = $container.find('.mw-edittools-section');
			if ($sections.length <= 1) {
				// Only care if there is more than one
				return;
			}

			$select = $('<select>').css('display', 'inline');

			initial = conf.initialSubset;
			if (isNaN(initial) || initial < 0 || initial >= $select.length) {
				initial = 0;
			}

			$sections.each(function (i, el) {
				var $section, sectionTitle, $option;

				$section = $(el);
				sectionTitle = $section.data('sectionTitle');

				$option = $('<option>')
					.text(sectionTitle)
					.prop('value', i)
					.prop('selected', i === initial);

				$select.append($option);
			});

			$select.change(editTools.handleOnchange);
			$container.prepend($select);

			editTools.chooseSection(initial);
		},

		/**
		 * Handle onchange event of the <select>
		 *
		 * @context {Element}
		 * @param e {jQuery.Event}
		 */
		handleOnchange: function () {
			editTools.chooseSection(Number($(this).val()));

			return true;
		},

		/**
		 * Toggle the currently visible section
		 *
		 * @param sectionNr {Number}
		 * @param setFocus {Boolean}
		 */
		chooseSection: function (sectionNr) {
			var $choise = $sections.eq(sectionNr);
			if ($choise.length !== 1) {
				return;
			}

			// Making these buttons is a little slow,
			// If we made them all at once the browser would hang
			// for over 2 seconds, so instead we're doing it on-demand
			// for each section. No need to do it twice thoguh, so remember
			// in data whether it was done already
			if (!$choise.data('charInsert.buttonsMade')) {
				$choise.data('charInsert.buttonsMade', true);
				editTools.makeButtons($choise);
			}

			$choise.show();
			$sections.not($choise).hide();
		},

		/**
		 * Convert the <a onclick> links to buttons in a given section.
		 *
		 * @param $section {jQuery}
		 */
		makeButtons: function ($section) {
			var $links;

			if (!$section.length) {
				return;
			}

			$links = $section.find('a');
			$links.each(function (i, a) {
				var $a, button;
				$a = $(a);
				button = document.createElement('input');
				button.type = 'button';
				button.onclick = a.onclick;
				button.value = $a.text();
				$a.replaceWith(button);
			});
		}

	};

	$(document).ready(editTools.setup);

}(jQuery, mediaWiki));