MediaWiki:Gadget-defaultVisibilityToggles.js

/* [[en:MediaWiki:Gadget-defaultVisibilityToggles.js]] and [[user:Ghybu]]*/
/* jshint undef: true, esversion: 5 */
/* globals $, jQuery, mw */

(function defaultVisibilityTogglesIIFE() {
"use strict";

/* == NavBars == */
var NavigationBarHide = "bınımne ▲";
var NavigationBarShow = "bımocne ▼";

function getToggleCategory(element, defaultCategory) {
	if ($(element).find("table").first().is(".translations"))
		return "Çarnayışan";
	
	var heading = element;
	while ((heading = heading.previousElementSibling)) {
		// tagName is always uppercase:
		// https://developer.mozilla.org/en-US/docs/Web/API/Element/tagName
		var num = heading.tagName.match(/H(\d)/);
		if (num)
			num = Number(num[1]);
		else
			continue;
		if (4 <= num && num <= 6) {
			if (heading.getElementsByTagName("span")[1])
				heading = heading.getElementsByTagName("span")[0];
			var text = jQuery(heading).text()
				.toLowerCase()
				// jQuery's .text() is inconsistent about whitespace:
				.replace(/^\s+|\s+$/g, "").replace(/\s+/g, " ")
				// remove numbers added by the "Auto-number headings" pref:
				.replace(/^[1-9][0-9.]+ ?/, "");
			// Toggle category must be convertible to a valid CSS identifier so
			// that it can be used in an id selector in jQuery in
			// ToggleCategory.prototype.newSidebarToggle
			// in [[MediaWiki:Gadget-VisibilityToggles.js]].
			// Spaces must later be converted to hyphens or underscores.
			// Reference: https://drafts.csswg.org/selectors-4/#id-selectors
			if (/^[a-zA-Z0-9\s_-]+$/.test(text))
				return text;
			else
				break;
		} else if (num)
			break;
	}
	
	return defaultCategory;
}

function createNavToggle(navFrame) {
	var navHead, navContent;
	for (var i = 0, children = navFrame.childNodes; i < children.length; ++i) {
		var child = children[i];
		if (child.nodeName === "DIV") {
			var classList = child.classList;
			if (classList.contains("NavHead"))
				navHead = child;
			if (classList.contains("NavContent"))
				navContent = child;
		}
	}
	if (!(navHead && navContent))
		return;
	
	// Step 1, don't react when a subitem is clicked.
	$(navHead).find("a").on("click", function (e) {
		e.stopPropagation();
	});
			
	// Step 2, toggle visibility when bar is clicked.
	// NOTE This function was chosen due to some funny behaviour in Safari.
	var $navToggle = $("<a>").attr("role", "button").attr("tabindex", "0");
	
	$("<span>").addClass("NavToggle")
		.append($navToggle)
		.prependTo(navHead);
	
	navHead.style.cursor = "pointer";
	var toggleCategory = $(navFrame).data("toggle-category")
		|| getToggleCategory(navFrame, "Qutiyanê binan");
	navHead.onclick = window.VisibilityToggles.register(toggleCategory,
		function show() {
			$navToggle.html(NavigationBarHide);
			if (navContent)
				navContent.style.display = "block";
		},
		function hide() {
			$navToggle.html(NavigationBarShow);
			if (navContent)
				navContent.style.display = "none";
		});
}


/* == View Switching == */

function viewSwitching($rootElement) {
	var showButtonText = $rootElement.data("vs-showtext") || "zêde ▼";
	var hideButtonText = $rootElement.data("vs-hidetext") || "şenık ▲";
	
	var toSkip = $rootElement.find(".vsSwitcher").find("*");
	var elemsToHide = $rootElement.find(".vsHide").not(toSkip);
	var elemsToShow = $rootElement.find(".vsShow").not(toSkip);
	
	// Find the element to place the toggle button in.
	var toggleElement = $rootElement.find(".vsToggleElement").not(toSkip).first();
	
	// The toggleElement becomes clickable in its entirety, but
	// we need to prevent this if a contained link is clicked instead.
	toggleElement.children("a").on("click", function (e) {
		e.stopPropagation();
	});
	
	// Add the toggle button.
	var toggleButton = $("<a>").attr("role", "button").attr("tabindex", "0");
	
	$("<span>").addClass("NavToggle").append(toggleButton).prependTo(toggleElement);
	
	// Determine the visibility toggle category (for the links in the bar on the left).
	var toggleCategory = $rootElement.data("toggle-category");
	if (!toggleCategory) {
		var classNames = $rootElement.attr("class").split(/\s+/);
		
		for (var i = 0; i < classNames.length; ++i) {
			var className = classNames[i].split("-");
			
			if (className[0] == "vsToggleCategory") {
				toggleCategory = className[1];
			}
		}
	}
	
	if (!toggleCategory)
		toggleCategory = "Ê binan";
	
	// Register the visibility toggle.
	toggleElement.css("cursor", "pointer");
	toggleElement.on("click", window.VisibilityToggles.register(toggleCategory,
		function show() {
			toggleButton.html(hideButtonText);
			elemsToShow.hide();
			elemsToHide.show();
		},
		function hide() {
			toggleButton.html(showButtonText);
			elemsToShow.show();
			elemsToHide.hide();
		}));
}

/* ==List switching== */
// Number of rows of list items to show in the hidden state of a "list switcher" list.
// Customize by adding
// window.listSwitcherCount = <your preferred number of rows>;
// to your common.js before loading this script.
window.listSwitcherRowCount = window.listSwitcherRowCount || 3;

function getListItemsToHide($listItems, columnCount, rowsInShowState) {
	var count = $listItems.length;
	var itemsPerColumn = Math.ceil(count / columnCount);
	
	var $elemsToHide = $();
	if (itemsPerColumn > rowsInShowState) {
		for (var i = 0; i < columnCount; ++i) {
			var columnStart = i * itemsPerColumn;
			$elemsToHide = $elemsToHide
				.add($listItems.slice(columnStart + rowsInShowState, columnStart + itemsPerColumn));
		}
	}
	
	return $elemsToHide;
}

function enableListSwitch ($rootElement, rowsInShowState) {
	// Number of columns must be set in data-term-list-column-count attribute
	// of the element with class term-list.
	var $termList = $rootElement.find(".term-list");
	
	// Find the element to place the toggle button in.
	var $toggleElement = $rootElement.find(".list-switcher-element");
	
	var columnCount = parseInt($termList.data("column-count"), 10);
	if (!(columnCount && columnCount > 0)) {
		$toggleElement.hide();
		return;
	}
	
	var $listItems = $rootElement.find("ul").first().find("li");
	var $toHide = getListItemsToHide($listItems, columnCount, rowsInShowState);
	
	// Don't do anything if there aren't any items to hide.
	if ($toHide.length === 0) {
		$toggleElement.hide();
		return;
	}
	
	$toggleElement.css("cursor", "pointer");
	
	// Add the toggle button.
	var $toggleButton = $("<a>").attr("role", "button").attr("tabindex", "0");
	
	var rootBackgroundColor = $termList.css("background-color"),
		rootBackground = $termList.css("background");
	var $navToggle = $("<span>").addClass("NavToggle");
	if (rootBackgroundColor || rootBackground)
		$navToggle.css(rootBackgroundColor ? "background-color" : "background",
			rootBackgroundColor || rootBackground);
	
	// The $toggleElement becomes clickable in its entirety, but
	// we need to prevent this if a contained link is clicked instead.
	$toggleElement.children("a").on("click", function (e) {
		e.stopPropagation();
	});
	
	// Determine the visibility toggle category (for the links in the bar on the
	// left). It will either be the value of the "data-toggle-category"
	// attribute or will be based on the text of the closest preceding
	// fourth-to-sixth-level header.
	var toggleCategory = $rootElement.data("toggle-category")
		|| getToggleCategory($rootElement[0], "Listeyanê binan");
	
	// Determine the text for the $toggleButton.
	var showButtonText = $toggleElement.data("showtext") || "zêde ▼";
	var hideButtonText = $toggleElement.data("hidetext") || "şenık ▲";
	
	// Register the visibility toggle.
	$toggleElement.on("click", window.VisibilityToggles.register(toggleCategory,
		function show() {
			$toggleButton.html(hideButtonText);
			$toHide.show();
		},
		function hide() {
			$toggleButton.html(showButtonText);
			$toHide.hide();
		}));
	
	// Add the toggle button to the DOM tree.
	$navToggle.append($toggleButton).prependTo($toggleElement);
	$toggleElement.show();
}

window.createNavToggle = createNavToggle;
window.viewSwitching = viewSwitching;
window.getToggleCategory = getToggleCategory;

/* == Apply four functions defined above == */
mw.hook('wikipage.content').add(function($content) {
	// NavToggles
	$('.NavFrame', $content).each(function(){
		createNavToggle(this);
	});

	//view switching
	$('.vsSwitcher', $content).each(function(){
		viewSwitching($(this));
	});

	// list switching
	$(".list-switcher", $content).each(function () {
		enableListSwitch($(this), window.listSwitcherRowCount);
	});
});

})();