/**  * Convert Arabic numerals to Devanagari and vice-versa.  *  * @revision 2.6 (2017-03-20)  * @dependencies mediawiki.cookie, mediawiki.util, mediawiki.user, mediawiki.RegExp  * @source https://www.mediawiki.org/wiki/MediaWiki:Gadget-Numerakri.js  * @author Daniel Friesen, 2012  * @author Timo Tijhof, 2012–2013  * @author Siddhartha Ghai, 2012  * @license CC-BY-SA 3.0  * @license MIT  */ /*jshint browser:true, boss:true, unused:true, white:true */ /*global jQuery, mediaWiki */ (function (mw, $) { 	"use strict"; 	// Private cache & utilities 	var el, w, num, 		/** 		 * @var {RegExp} Matcher for characters that can be mapped. 		 * @example matchers.devanagari[0] matches devanagari numeral for 0 		 *  can be mapped with e.g. maps.arabic[0]. 		 */ 		matchers = {}, 		msgs = { 			'option-default': { 				en: 'Default', 				hi: 'डिफ़ॉल्ट' 			}, 			'option-arabic': { 				en: '123' 			}, 			'option-devanagari': { 				en: 'Devanagari', 				hi: '१२३' 			}, 			'label-url': { 				en: '//www.mediawiki.org/wiki/MediaWiki_talk:Gadget-Numerakri.js', 				hi: '//hi.wikipedia.org/wiki/विकिपीडिया:अंक_परिवर्तक' 			}, 			'label-text': { 				en: 'Convert numerals', 				hi: 'अंक परिवर्तन' 			}, 			'label-tooltip': { 				en: 'Convert between Arabic and Devanagari numerals', 				hi: 'नागरी और अरबी अंकों में परिवर्तन करें' 			} 		}, 		maps = { 			// 0 to 9 			devanagari: [ '०', '१', '२', '३', '४', '५', '६', '७', '८', '९' ], 			arabic:     [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' ] 		}, 		// For consistency recreate these objects locally in older browsers so that 		// we can use the same constants in fallback code as well. 		NodeFilter = window.NodeFilter || { 			FILTER_ACCEPT: 1, 			FILTER_REJECT: 2, 			FILTER_SKIP: 3 		}, 		Node = window.Node || { 			TEXT_NODE: 3 		};  	// Fallback for document.createTreeWalker for older browsers (IE6-8) 	function walkTheDomFallback(node, filter, apply) { 		var val = filter(node); 		switch (val) { 		case NodeFilter.FILTER_ACCEPT: 			apply(node); 			node = node.firstChild; 			break; 		case NodeFilter.FILTER_REJECT: 			node = node.nextSibling; 			break; 		case NodeFilter.FILTER_SKIP: 			node = node.firstChild; 			break; 		} 		while (node) { 			walkTheDomFallback(node, apply); 			node = node.nextSibling; 		} 	}  	function walkTheDom(filter, apply) { 		if (document.createTreeWalker) { 			w = document.createTreeWalker(document.body, NodeFilter.SHOW_ALL, filter, false); 			while (el = w.nextNode()) { 				apply(el); 			} 		} else { 			walkTheDomFallback(document.body, filter, apply); 		} 	}  	function msg(key) { 		return msgs[key][mw.config.get('wgUserLanguage')] || msgs[key].en; 	}  	function getMatchers(target) { 		var rChars; 		if (!matchers[target]) { 			rChars = { 0: [], 1: [], 2: [], 3: [], 4: [], 5: [], 6: [], 7: [], 8: [], 9: [] }; 			$.each(maps, function (type, map) { 				if (type !== target) { 					for (var i = 0; i <= 9; i++) { 						rChars[i].push(map[i]); 					} 				} 			}); 			rChars = $.map(rChars, function (chars) { 				return new RegExp('(' + $.map(chars, mw.RegExp.escape).join('|') + ')', 'g'); 			}); 			matchers[target] = rChars; 		} 		return matchers[target]; 	}  	/** 	 * @singleton 	 */ 	num = window.Numerakri = { 		matchers: matchers,  		/** 		 * @property {string} One of 'default', 'arabic' or 'devanagari'. 		 *  default leaves the page unchanged (default). 		 */ 		type: 'default',  		/** 		 * @property {jQuery|null} The HTML interface. May or may not be 		 * attached to the document yet. 		 */ 		$int: null,  		/** 		 * @param {HTMLElement|TextNode} el 		 */ 		filterNode: function (el) { 			var n = el.nodeName && el.nodeName.toLowerCase(); 			if (n === 'input' || n === 'textarea' || $(el).hasClass('mw-numerakri-skip')) { 				return NodeFilter.FILTER_REJECT; 			} 			if (el.nodeType === Node.TEXT_NODE) { 				return NodeFilter.FILTER_ACCEPT; 			} 			return NodeFilter.FILTER_SKIP; 		},  		/** 		 * @method 		 * @param {TextNode} el 		 */ 		handleTextNode: function (el) { 			var live = el.nodeValue, 				fix = live, 				matchers = getMatchers(num.type), 				i = 0; 			for (; i <= 9; i++) { 				fix = fix.replace(matchers[i], maps[num.type][i]); 			} 			if (live !== fix) { 				el.nodeValue = fix; 			} 		},  		isValidType: function (type) { 			return type === 'default' || !!maps[type]; 		},  		/** 		 * Register an additional type. 		 * 		 * @example 		 *  num.addType('arabic', { map: [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' ] }); 		 * @param {string} type ID 		 * @param {Object} data Contents: 		 * - {Object} map 		 * - {string|Object} msg [optional] Label for this type or translations of labels, 		 *   keyed by language code. Defaults to ucFirst transformation of ID. 		 */ 		addType: function (type, data) { 			if (type && data && $.isArray(data.map)) { 				// Map 				maps[type] = data.map;  				// Messages 				if (data.msg) { 					if ($.isPlainObject(data.msg)) { 						if (!data.msg.en) { 							data.msg.en = $.ucFirst(type); 						} 					} else { 						data.msg = { en: String(data.msg) }; 					} 				} else { 					data.msg = { en: $.ucFirst(type) }; 				} 				msgs['option-' + type] = data.msg;  				if (this.$select) { 					this.$select.append( 						$('<option>').val(type) 							.text(msg('option-' + type)) 							.prop('selected', this.getStoredType() === type) 					); 				} 				return true; 			} 			return false; 		},  		/** 		 * @method 		 * @param {string} type One of 'arabic' or 'devanagari'. 		 * @throws Error 		 */ 		setType: function (type) { 			if (!this.isValidType(type)) { 				mw.log('Unknown Numerakri type: ' + type); 				return false; 			}  			this.type = type;  			// Remember for 30 days 			mw.cookie.set('mw-numerakri-type', type, { expires: 30, path: '/' });  			this.convertPage(); 		},  		/** 		 * @return {string|null} 		 */ 		getStoredType: function () { 			// From cookie 			return mw.cookie.get('mw-numerakri-type'); 		},  		/** 		 * Do the conversion. 		 * @method 		 */ 		convertPage: function () { 			if (this.type === 'default') { 				// Type 'default' means "don't change the page". 				return; 			}  			switch (this.type) { 			case 'arabic': 				$('ol:lang(hi) li, ol.references, li.references').css('list-style-type', 'decimal'); 				break; 			case 'devanagari': 				$('ol:lang(hi) li, ol.references, li.references').css('list-style-type', 'devanagari'); 				break; 			}  			walkTheDom(this.filterNode, this.handleTextNode); 		},  		setupInterface: function () { 			var $select, stored; 			$select = $('<select>').addClass('mw-numerakri-skip').append( 				$('<option>').val('default').text(msg('option-default')), 				// $.map returns an array 				$.map(maps, function (map, type) { 					return $('<option>').val(type).text(msg('option-' + type)); 				}) 			);  			stored = num.getStoredType(); 			if (stored) { 				// Set initial value from storage 				$select.val(stored); 				num.setType(stored); 			}  			$select.change(function () { 				num.setType(this.value); 			});  			if (num.$select) { 				num.$select.replaceWith($select); 			} else { 				num.$select = $select; 			} 		},  		attachInterface: function () { 			var potlet, $menu;  			if (num.$select === null) { 				num.setupInterface(); 			}  			$('#pt-numconvert').remove(); // Just in case 			potlet = mw.util.addPortletLink( 				'p-personal', 				msg('label-url'), 				msg('label-text'), 				'pt-numconvert', 				msg('label-tooltip'), 				null, 				mw.user.isAnon() ? '#pt-createaccount' : '#pt-userpage' 			);  			$menu = $('<div>').addClass('mw-numerakri-menu').append(num.$select);  			$(potlet).append($menu); 		} 	};  	num.setupInterface();  	mw.loader.using('mediawiki.user', function () { 		$(num.attachInterface); 	});  })(mediaWiki, jQuery);