MediaWiki:Gadget-watchlist.js

var gadgetWatchlistFirstRun = true;

if (mw.config.get('wgCanonicalSpecialPageName') === 'Watchlist' &&
	mw.config.get('wgAction') === 'view'
) {
	mw.hook('wikipage.content').add(function () {
		setTimeout(function () {  // cure for Firefox

/* MAIN BLOCK */
var whenPageLoaded = +(new Date()) - 20000;  // add 20 seconds just in case

var hideInterfaceCSS, rvOffCSS;
var sortingDone, allStarsOn, hoverOnTitlesDone;

// ruwiki
var mm = {
	sortTip: 'Сортировать страницы по пространствам',
	sortDone: 'Изменения уже отсортированы',
	unwatchTip: 'Добавить звёздочки для вычёркивания страниц из списка наблюдения',
	onlynew: 'Только новые',
	onlynewTip: 'Изменения с момента загрузки этой страницы',
	onlynewTipLowerCase: 'изменения с момента загрузки этой страницы',
	expandAll: 'Показать/спрятать все свёрнутые правки',
	switchRevert: 'Спрятать/показать ссылки «откатить»',
	fullPage: 'Спрятать/показать элементы интерфейса'
};

// recent changes type in preferences
var isEnhanced = mw.util.$content.find('ul.special').length == 0;

// find insertion points for links: after "days all"
var linksAt = $('#mw-watchlist-options').find('#days').next();


// UNWATCH LINKS
// on every line
if (document.cookie.indexOf('wlunw=1') != -1) {
	showAllStars();
} else {
	bindHoverOnTitles();  // mouseover on title
}
// switch for above, saved in a cookie
addLink(
	'<img alt="x" style="width:1em;" src="/upwiki/wikipedia/commons/a/a4/Vector_skin_-_page_not_in_the_watchlist.png">',
	mm.unwatchTip
).click(showAllStars);  // click on timestamp (enhanced recent changes) / empty space (non-enhanced)

if (document.cookie.indexOf('wlrvoff=1') != -1) switchRevert();

if (gadgetWatchlistFirstRun) {
	// OTHER LINKS
	// "sort" link
	addLink('↑↓', mm.sortTip).click(sortWatchlist);
	
	// "expand all" link
	if ($('.mw-enhancedchanges-arrow').length) {
		addLink('±', mm.expandAll).click(expandMultipleEdits);
	}
	
	// "switch revert" link
	if ($('.mw-rollback-link').length) {
		addLink('⎌', mm.switchRevert).click(switchRevert);
	}
	
	// "only new" link
	addLink(mm.onlynew, mm.onlynewTip).mousedown(onlyNewEntries).attr('id', 'listSince');
	
	
	// TABS
	if (!window.wlNoTabs) {
		var mainTab = $('#ca-special, #ca-nstab-special').eq(0);  // "Special" tab
		
		// change main tab into "watchlist Δ"
		var wl = $.trim($('h1#firstHeading').text());
		mainTab.find('a')  // replace "Special" tab text with "Watchlist"
			.text(wl + ' △')  // Δ is good but monobook makes is lowercase
			.attr('title', wl + ' — ' + mm.onlynewTipLowerCase)
			.on('mousedown keydown', onlyNewEntries);
		
		// add "hideInterface" tab
		mainTab.clone(true).removeClass('selected')
			.appendTo(mainTab.parent())
			.click(hideInterface)
			.attr('id','').attr('href', '#')
			.find('a')
			.text('↸').attr('title', mm.fullPage).attr('accesskey', '');
	}
	
	
	// OTHER TASKS
	if (document.cookie.indexOf('wlmax=1') != -1) hideInterface();
	
	if ($('.mw-changeslist .mw-rollback-link').first().css('visibility') == 'hidden') {
		$('.mw-changeslist .mw-rollback-link').css('visibility', 'visible');
	}
}

gadgetWatchlistFirstRun = false;

return;


/* FUNCTIONS */
function addLink(txt, tip) {
	linksAt.before(' &nbsp;');
	return $('<a href="#" title="' + tip + '">' + txt + '</a>').insertBefore(linksAt);
}


function onlyNewEntries(e) {
	var url = window.location.href.split('#')[0];
	var days = (+(new Date()) - whenPageLoaded)/(1000 * 3600 * 24);
	if (days < 0) days = 0.01;  // negative might happen when adjusting local time
	e.target.href = /[?&]days=/.test(url)
		? url.replace(/([?&]days=)[^&]*/, '$1' + days)
		: url + (url.indexOf('?') < 0 ? '?':'&') + 'days=' + days;
	return true;
}

function showAllStars(e) {
	if (e) {
		e.preventDefault();
	}
	if (!allStarsOn) {
		mw.util.$content.find('a[href*="action=history"]')
			.each(function(i, lnk) {
				updateStar(getRow(this));
			});
		if (e) {
			var cookieDate = new Date($.now() + 1000 * 60 * 60 * 24 * 90).toGMTString();
			document.cookie = 'wlunw=1; expires=' + cookieDate + '; path=/';
		}
		allStarsOn = true;
	} else {  // otherwise remove
		mw.util.$content.find('a.aj-unwatch').not('unwatched').remove();
		document.cookie = 'wlunw=0; expires=' + (new Date()).toGMTString() + '; path=/';
		if (!hoverOnTitlesDone) {
			bindHoverOnTitles();
		}
		allStarsOn = false;
	}
}

function sortWatchlist(e) {
	e.preventDefault();
	if (sortingDone) {
		return alert(mm.sortDone);
	}
	mw.util.$content.find('h4').each(function() {  // sort all days separately
		var container = $(this).next('div, ul');
		var rows = container.children('li, table');
		// create sorting keys
		var key;
		rows.each(function(i) {
			// use built-in class: either li.watchlist-5-<title> or
			// table.mw-changeslist-ns100-<title> in enhanced recent changes
			key = /(\d+)-(\S+)/.exec(this.className) || ['', 0, ' '];  // logs might not have this class
			if (key[1] % 2) {
				key[1]--;  // sort talk page as if it was a base page
			}
			if (window.watchlistSortNamespaceOnly) {
				key[2] = zzz(i);  // keep timestamp order within each NS block
			}
			this.skey = zzz(key[1]) + ':' +  key[2];
		});
		// sort array and then HTML
		rows.sort(function(a, b) {
			return a.skey > b.skey ? 1 : (a.skey < b.skey ? -1 : 0);
		});
		for (i = 0; i < rows.length; i++) {
			container.append(rows.eq(i));
		}
	});
	sortingDone = true;
}

function expandMultipleEdits(e) {
	e.preventDefault();
	var $collapsibles = $('.mw-changeslist .mw-collapsible');
	var $collapsible;
	var collapsed = $collapsibles.hasClass('mw-collapsed');  // at lease one
	for (var i = 0; i < $collapsibles.length; i++) {
	    $collapsible = $collapsibles.eq(i);
	    if ($collapsible.hasClass('mw-collapsed') === collapsed) {
			$collapsible.find('.mw-enhancedchanges-arrow').click();
	    }
	}
}

function switchRevert(e) {
	if (e) e.preventDefault();
	if (!rvOffCSS) {
		rvOffCSS = mw.util.addCSS('.mw-rollback-link { display:none; }');
	} else {
		rvOffCSS.disabled = !rvOffCSS.disabled;
	}
	if (rvOffCSS.disabled) {
		document.cookie = 'wlrvoff=0; expires=' + (new Date()).toGMTString() + '; path=/';
	} else if (e) {
		var cookieDate = (new Date($.now() + 1000 * 60 * 60 * 24 * 90)).toGMTString();
		document.cookie = 'wlrvoff=1; expires=' + cookieDate + '; path=/';
    }
}

function bindHoverOnTitles() {  // find all "titles" links and assign hover event
	if (hoverOnTitlesDone) return;
	// $('#mw-content-text').find(isEnhanced ? 'table' : 'li');
	mw.util.$content.find('a[href*="action=history"]')
		.each(function() {
			getRow(this).find('a[href^="/wiki/"]:first').hover(hoverOnTitle);
		});
	hoverOnTitlesDone = true;
}

function hoverOnTitle(e) {  // on hover: add "unwatch" star after 1 second
	var lnk = $(this);
	if (e.type == 'mouseenter') {
		lnk.data('uwTimeout', setTimeout(function() {showStarOnHover(lnk)}, 1000));
	} else {
		clearTimeout(lnk.data('uwTimeout'));
	}
}

function showStarOnHover(lnk) {
	var row = getRow(lnk);
	updateStar(row);
	// attach mouseleave to remove the star
	if (row.attr('leaveAssigned')) return;
	row.attr('leaveAssigned', true);
	row.mouseleave(function(e) {
		var uw = $(this).find('.aj-unwatch');
		if (uw.length
			&& /unwatch/.test(uw.attr('href'))
			&& !/waiting|failure/.test(uw.attr('class'))
			&& !allStarsOn
		) {
			uw.remove();
		}
	});
}

function updateStar(row) {
	var star = row.find('a.aj-unwatch');
	if (!star.length) { // create
		star = $('<a class="aj-unwatch" href="' 
			+ row.find('a[href*="action=history"]').attr('href').replace(/&curid=\d+/, '') 
			+ '">x</a>')
				.click(ajaxUnwatch)
				.insertBefore(row.find('a[href^="/wiki/"]:first'))
				.after(' ');
	}
	// update
	var isUnwatched = row.hasClass('unwatched');
	var state = isUnwatched ? 'watch' : 'unwatch';
	star.attr('title', mw.msg(state))
		.attr('href', star.attr('href').replace(/&action=\w+/, '&action='+ state))
		.html('<img alt="x" style="width:0.6em;" src="/upwiki/wikipedia/commons/'
			+ (isUnwatched
				? 'a/a4/Vector_skin_-_page_not_in_the_watchlist.png'
				: 'f/f2/Vector_skin_-_page_in_the_watchlist.png')
			+ '" />');
}

function getRow(el) {
	return $(el).closest(isEnhanced ? 'tr' : 'li');
}

function ajaxUnwatch(e) {
	var xLnk = $(this), errMsg = '';
	var req = {
		token: mw.user.tokens.get('watchToken'),
		title: getLinkTitle(xLnk)
	};
	if (/&action=unwatch/.test(xLnk.attr('href'))) {
		req.unwatch = '';
	}
	xLnk.addClass('waiting');
	$.ajax({
		type:'POST', dataType: 'json',
		url: mw.util.wikiScript('api') + '?action=watch&format=json',
		data: req,
		timeout: 5000,
		success: function(resp) {
			if (resp.error) {
				errMsg = resp.error.info;
			} else if (!resp.watch) {
				errMsg = 'empty response';
			} else if (typeof resp.watch.unwatched == 'string') {
				unwatchSuccess(req.title, true);
			} else if (typeof resp.watch.watched   == 'string') {
				unwatchSuccess(req.title, false);
			} else {
				errMsg = 'unrecognized response';
			}
		},
		error: function(xhr, status, err) {
			errMsg = status + ':' + err;
		},
		complete: function() {  // update X link
			xLnk.removeClass('waiting');
			if (errMsg) xLnk.attr('title', 'API error: ' + errMsg).addClass('failure');
			else xLnk.removeClass('failure');
		}
	});
	return false;
}

function unwatchSuccess(name, isUnwatched) {
	// find full name of associated talk page (or vice versa)
	var ns = getTitleNamespace(name);
	var name2 = name;
	if (ns > 0) {
		name2 = name2.replace(/^.+?:/,'');  // remove old prefix
	}
	if (ns % 2) {
		ns--;
	} else {
		ns++;  // switch to "other" namespace
	}
	if (ns > 0) {
		name2 = mw.config.get('wgFormattedNamespaces')[ns] + ':' +  name2;  // add new prefix
	}
	// mark all rows that are either name or name2
	mw.util.$content.find('a[href*="action=history"]').each(function() {
		var ttl = getLinkTitle(this);
		if (ttl != name && ttl != name2) return;
		var row = getRow(this);
		row.toggleClass('unwatched', isUnwatched || false);
		updateStar(row);
		if (!isUnwatched && !allStarsOn) {
			row.find('a.aj-unwatch').remove();
		}
	});
}

function hideInterface(e) {
	if (e) e.preventDefault();
	
	var hideInterfaceCSSCode = '\
		#firstHeading,\
		div#siteNotice,\
		#contentSub,\
		fieldset#mw-watchlist-options,\
		div.mw-rc-label-legend,\
		#mw-fr-watchlist-pending-notice,\
		.mw-indicators,\
		.mw-rcfilters-ui-filterTagMultiselectWidget,\
		.mw-rcfilters-ui-watchlistTopSectionWidget-savedLinks {\
			display: none;\
		}\
		\
		.client-js .mw-special-Watchlist .rcfilters-head.rcfilters-head {\
			min-height: 200px;\
		}\
		\
		.client-js body:not(.mw-rcfilters-ui-initialized) .rcfilters-spinner.rcfilters-spinner {\
			margin-top: -15px;\
		}\
	';
	
	if (!hideInterfaceCSS) {
		// If the new filters are on, don't wait if the link is clicked ("e" is set). Wait
		// if the interface hiding is activated by a cookie.
		if (!mw.user.options.get('rcenhancedfilters') || e) {
			hideInterfaceCSS = mw.util.addCSS(hideInterfaceCSSCode);
		} else {
			mw.hook('structuredChangeFilters.ui.initialized').add(function () {
				if (!hideInterfaceCSS) { 
					hideInterfaceCSS = mw.util.addCSS(hideInterfaceCSSCode);
				}
			});
		}
	} else {
		hideInterfaceCSS.disabled = !hideInterfaceCSS.disabled;
	}
	
	if (e) {
		if (!hideInterfaceCSS.disabled) {
			var cookieDate = new Date($.now() + 1000 * 60 * 60 * 24 * 90).toGMTString();
			document.cookie = 'wlmax=1; expires=' + cookieDate + '; path=/';
		} else {
			document.cookie = 'wlmax=0; expires=' + (new Date()).toGMTString() + '; path=/';
		}
	}
}

function getTitleNamespace(title) {  // returns namespace number
	var prefix = /^(.+?):/.exec(title);
	if (!prefix) return 0;  // no prefix means article
	return mw.config.get('wgNamespaceIds')[ prefix[1].toLowerCase().replace(/ /g,'_') ] || 0;
}

function getLinkTitle(lnk) {  // gets 'title=' part from a link
	return mw.util.getParamValue('title', $(lnk).attr('href')).replace(/_/g,' ');
	// var ma = /(&|\?)title=([^&]+)/.exec($(lnk).attr('href'));
	// if (ma) return decodeURIComponent(ma[2]).replace(/_/g,' ');
	// else return '';
}

function zzz(s) {  // 5 -> 005
	s = s.toString();
	if (s.length == 1) {
		return '00' + s;
	} else if (s.length == 2) {
		return '0' + s;
	} else {
		return s;
	}
}

		}, 0);
	});  // main
}