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WikiIndent

Four visual improvements for Wikipedia (and other wikis): Indents sub-sections to make the layout clearer. Hides the sidebar (toggle by clicking the header). Floats the Table of Contents for access when scrolled. Converts heading underlines to overlines.

Tính đến 24-01-2015. Xem phiên bản mới nhất.

// ==UserScript==
// @name           WikiIndent
// @namespace      joeytwiddle
// @description    Four visual improvements for Wikipedia (and other wikis):  Indents sub-sections to make the layout clearer.  Hides the sidebar (toggle by clicking the header).  Floats the Table of Contents for access when scrolled.  Converts heading underlines to overlines.
// @downstreamURL  http://userscripts.org/scripts/source/60832.user.js
// @version        1.2.6
// @include        *wiki*
// @include        http://www.buzztard.com/*
// @include        http://encyclopediadramatica.com/*
// @include        http://www.wormus.com/leakytap/*
// @include        http://theinfosphere.org/*
// @include        http://rosettacode.org/mw/*
// @grant          GM_setValue
// @grant          GM_addStyle
// @grant          GM_getValue
// @grant          GM_log
// ==/UserScript==

// Without this function wrapper, Mozilla Firefox rejects the whole script, because it sees the top-level 'return;' as invalid syntax!

(function(){

// Feature #1 : Make the sidebar collapsible so the page content can fill the whole width.

var toggleSidebar = true;

// Feature #2 : Float the TOC on the top-right of the screen, so it can still be used after scrolling down the page.

var makeTableOfContentsFloat = true;

// Feature #3 : Indent the blocks so their tree-like structure is visible.

var indentSubBlocks = true;

// Feature #4 : Change underlined headings to overlined headings.  (So the lines separate the heading from the previous section, rather than separating the heading from its content.)

var fixUnderlinesToOverlines = true;



// var minimisedSidebarSize = 6;   // Small
var minimisedSidebarSize = 16;

// Wikipedia's new transition displays the sidebar text before there is space
// for it, causing brief ugly overlap!  So we delay unhiding to look prettier.
var delayHide = 0;
var delayUnhide = ( document.getElementById("mw-panel") ? 250 : 0 );

var debug = false;



/* CONSIDER: As we scroll the page, light up the "current" section in the TOC.
 *
 * FIXED: One occasional problem with the TOC is when it is taller than the
 *      window!  (I usually work around this by zooming out (reducing font
 *      size), but perhaps we can use CSS overflow to solve it properly.)
 *
 * NOTE: The sidebar toggle now animates smoothly.  This is caused by animation
 * rules in Wikipedia's CSS.  I don't know why they are there, I haven't seen
 * anything that makes use of them, except by circumstance, this script!
 *
 * TODO: Indentation was not working well in edit preview on Hwiki(MW).
*/

/* Changelog
 *  5/ 2/2012 - Better (though more fragile) click-to-toggle areas.
 *  3/ 1/2012 - Fixed Chrome compatibility so it works!  Doh.
 * 23/ 3/2011 - Added Chrome compatibility.
*/

// Recent versions do not play nice together, so just in case we run WI twice:
if (unsafeWindow.WikiIndent_loaded) {
	return;
} else {
	unsafeWindow.WikiIndent_loaded = true;
}

function log(x) {
	x = "[WI] "+x;
	if (this.GM_log) {
		this.GM_log(x);
	} else if (this.console && console.log) {
		console.log(x);
	} else {
		window.status = ""+x;
		// alert(x);
	}
}

// For bookmarklets:
if (typeof GM_addStyle == "undefined") {
	GM_addStyle = function(css) {
		var head, style;
		head = document.getElementsByTagName("head")[0];
		if (!head) { return; }
		style = document.createElement("style");
		style.type = "text/css";
		style.innerHTML = css;
		head.appendChild(style);
	};
}

if (typeof GM_setValue == 'undefined' || window.navigator.vendor.match(/Google/)) {
	GM_log("WikiIndent: Adding fallback implementation of GM_set/getValue");

	if (typeof localStorage == 'undefined') {

		GM_getValue = function(name, defaultValue) {
			return defaultValue;
		};

	} else {

		GM_setValue = function(name, value) {
			value = (typeof value)[0] + value;
			localStorage.setItem(name, value);
		};

		GM_getValue = function(name, defaultValue) {
			var value = localStorage.getItem(name);
			if (!value)
				return defaultValue;
			var type = value[0];
			value = value.substring(1);
			switch (type) {
				case 'b':
					return value == 'true';
				case 'n':
					return Number(value);
				default:
					return value;
			}
		};

	}

}



// The following block is mirrored in table_of_contents_everyw.user.js

// See also: resetProps
function clearStyle(elem) {
	// We set some crucial defaults, so we don't inherit CSS from the page:
	elem.style.display = 'inline';
	elem.style.position = 'static';
	elem.style.top = 'auto';
	elem.style.right = 'auto';
	elem.style.bottom = 'auto';
	elem.style.left = 'auto';
	elem.style.color = 'black';
	elem.style.backgroundColor = 'white';
	return elem;
}

function newNode(tag,data) {
	var elem = document.createElement(tag);
	if (data) {
		for (var prop in data) {
			elem[prop] = data[prop];
		}
	}
	return elem;
}

function newSpan(text) {
	return clearStyle(newNode("span",{textContent:text}));
}

function addCloseButtonTo(where, toc) {
	var closeButton = newSpan("[X]");
	// closeButton.style.float = 'right';
	// closeButton.style.cssFloat = 'right'; // Firefox
	// closeButton.style.styleFloat = 'right'; // IE7
	closeButton.style.cursor = 'pointer';
	closeButton.style.paddingLeft = '5px';
	closeButton.onclick = function() { toc.parentNode.removeChild(toc); };
	closeButton.id = "closeTOC";
	where.appendChild(closeButton);
}

function addHideButtonTo(toc, tocInner) {
	var rollupButton = newSpan("[hide]");
	// rollupButton.style.float = 'right';
	// rollupButton.style.cssFloat = 'right'; // Firefox
	// rollupButton.style.styleFloat = 'right'; // IE7
	rollupButton.style.cursor = 'pointer';
	rollupButton.style.paddingLeft = '10px';
	function toggleRollUp() {
		if (tocInner.style.display == 'none') {
			tocInner.style.display = '';
			rollupButton.textContent = "[hide]";
		} else {
			tocInner.style.display = 'none';
			rollupButton.textContent = "[show]";
		}
		setTimeout(function(){
			GM_setValue("WI_toc_rolledUp", tocInner.style.display=='none');
		},5);
	}
	rollupButton.onclick = toggleRollUp;
	rollupButton.id = "togglelink";
	toc.appendChild(rollupButton);
	if (GM_getValue("WI_toc_rolledUp",false)) {
		toggleRollUp();
	}
}

function addButtonsConditionally(toc) {

	function verbosely(fn) {
		return function() {
			// GM_log("[WI] Calling: "+fn+" with ",arguments);
			return fn.apply(this,arguments);
		};
	};

	// Provide a hide/show toggle button if the TOC does not already have one.

	// Wikimedia's toc element is actually a table.  We must put the
	// buttons in the title div, if we can find it!

	var tocTitle = document.getElementById("toctitle"); // Wikipedia
	tocTitle = tocTitle || toc.getElementsByTagName("h2")[0]; // Mozdev
	// tocTitle = tocTitle || toc.getElementsByTagName("div")[0]; // Fingers crossed for general
	tocTitle = tocTitle || toc.firstChild; // Fingers crossed for general

	// Sometimes Wikimedia does not add a hide/show button (if the TOC is small).
	// We cannot test this immediately, because it gets loaded in later!
	function addButtonsNow() {

		var hideShowButton = document.getElementById("togglelink");
		if (!hideShowButton) {
			var tocInner = toc.getElementsByTagName("ol")[0]; // Mozdev (can't get them all!)
			tocInner = tocInner || toc.getElementsByTagName("ul")[0]; // Wikipedia
			tocInner = tocInner || toc.getElementsByTagName("div")[0]; // Our own
			if (tocInner) {
				verbosely(addHideButtonTo)(tocTitle || toc, tocInner);
			}
		}

		// We do this later, to ensure it appears on the right of
		// any existing [hide/show] button.
		if (document.getElementById("closeTOC") == null) {
			verbosely(addCloseButtonTo)(tocTitle || toc, toc);
		}

	}

	// Sometimes Wikimedia does not add a hide/show button (if the TOC is small).
	// We cannot test this immediately, because it gets loaded in later!
	if (document.location.href.indexOf("wiki") >= 0) {
		setTimeout(addButtonsNow,2000);
	} else {
		addButtonsNow();
	}

}

// End mirror.



// == Main == //

function doIt() {



	//// Feature #1 : Hide the sidebar.  Fullsize the content.

	// Toggle the sidebar by clicking the "page background" (empty space outside
	// the main content).  Sometimes clicking the content background is enough.

	if (toggleSidebar) {

		var content = document.getElementById("content")
			|| document.getElementById("column-content");
		var sideBar = document.getElementById("column-one")
			|| document.getElementById("panel")
			|| /* WikiMedia: */ document.getElementById("mw-panel")
			|| /* forgot:    */ document.getElementById("jq-interiorNavigation")
			|| /* pmwiki:    */ document.getElementById('wikileft');
		var toToggle = [ document.getElementById("page-base"), document.getElementById("siteNotice"), document.getElementById("head") ];
		var cac = document.getElementById("p-cactions");
		var cacOldHome = ( cac ? cac.parentNode : null );

		function toggleWikipediaSidebar(evt) {

			// We don't want to act on all clicked body elements (notably not the WP
			// image).  I detected two types of tag we wanted to click.
			/*if (!evt || evt.target.tagName == "UL" || evt.target.tagName == "DIV") {*/

			// That was still activating on divs in the content!  (Gaps between paragraphs.)
			// This only acts on the header area.
			var thisElementTogglesSidebar;
			var inStartup = (evt == null);
			if (inStartup) {
				thisElementTogglesSidebar = true;
			} else {
				var elem = evt.target;
				var clickedHeader = (elem.id == 'mw-head');
				// For wikia.com:
				clickedHeader |= (elem.id=="WikiHeader");
				// For Wikimedia:
				var clickedPanelBackground = elem.id == 'mw-panel' || elem.className.indexOf('portal')>=0;
				clickedPanelBackground |= elem.id == 'column-content';  // for beebwiki (old mediawiki?)
				// Hopefully for sites in general.  Allow one level below body.  Needed for Wikia's UL.
				var clickedAreaBelowSidebar = (elem.tagName == 'HTML' || elem.tagName == 'BODY');
				var clickedBackground = (elem.parentNode && elem.parentNode.tagName == "BODY");
				thisElementTogglesSidebar = clickedHeader || clickedPanelBackground || clickedAreaBelowSidebar || clickedBackground;
			}
			if (thisElementTogglesSidebar) {

				if (evt)
					evt.preventDefault();
				if (debug) { GM_log("evt=",evt); }
				// if (evt) GM_log("evt.target.tagName="+evt.target.tagName);
				/* We put the GM_setValue calls on timers, so they won't slow down the rendering. */
				if (sideBar) {
					if (sideBar.style.display == '') {
						// Wikipedia's column-one contains a lot of things we want to hide
						sideBar.style.display = 'none';
						if (content) {
							content.oldMarginLeft = content.style.marginLeft;
							content.style.marginLeft = minimisedSidebarSize+'px';
						}
						for (var i in toToggle) {
							if (toToggle[i]) { toToggle[i].style.display = 'none'; }
						}
						// but one of them we want to preserve
						// (the row of tools across the top):
						if (cac)
							sideBar.parentNode.insertBefore(cac,sideBar.nextSibling);
						setTimeout(function(){
							GM_setValue("sidebarVisible",false);
						},200);
					} else {
						function unhide() {
							sideBar.style.display = '';
						}
						setTimeout(unhide,delayUnhide);
						if (content) {
							content.style.marginLeft = content.oldMarginLeft;
						}
						for (var i in toToggle) {
							if (toToggle[i]) { toToggle[i].style.display = ''; }
						}
						if (cac && cacOldHome)
							cacOldHome.appendChild(cac); // almost back where it was :P
						setTimeout(function(){
							GM_setValue("sidebarVisible",true);
						},200);
					}
				}

			}
		}

		// log("sideBar="+sideBar+" and content="+content);
		if (sideBar) {
			// We need to watch window for clicks below sidebar (Chrome).
			document.documentElement.addEventListener('click',toggleWikipediaSidebar,false);
		} else {
			log("Did not have sideBar "+sideBar+" or content "+content); // @todo Better to warn or error?
		}

		if (!GM_getValue("sidebarVisible",true)) {
			toggleWikipediaSidebar();
		}

		// TODO: Make a toggle button for it!

		// Fix for docs.jquery.com:
		/*
		var j = document.getElementById("jq-primaryContent");
		if (j) {
			j.style.setAttribute('display', 'block');
			j.style.setAttribute('float', 'none');
			j.style.setAttribute('width', '100%');
		}
		*/
		GM_addStyle("#jq-primaryContent { display: block; float: none; width: 100%; }");

	}



	//// Feature #2: Make Table of Contents float

	if (makeTableOfContentsFloat) {

		/* @consider If the TOC has a "Hide/Show" link ("button") then we could
		 * fire that instead of changing opacity.
		 */

		// document.getElementById('column-one').appendChild(document.getElementById('toc'));

		// createFader basically worked but was a little bit buggy.  (Unless the bugs were caused by conflict with other TOC script.)
		// Anyway createFader() has now been deprecated in favour of CSS :hover.

		function createFader(toc) {

			var timer = null;

			// BUG: this didn't stop the two fades from conflicting when the user wiggles the mouse to start both!
			function resetTimeout(fn,ms) {
				if (timer) {
					clearTimeout(timer);
				}
				setTimeout(fn,ms);
			}

			function fadeElement(elem,start,stop,speed,current) {
				if (current == null)
					current = start;
				if (speed == null)
					speed = (stop - start) / 8;
				if (Math.abs(current+speed-stop) > Math.abs(current-stop))
					current = stop;
				else
					current = current + speed;
				elem.style.opacity = current;
				if (current != stop)
					resetTimeout(function(){fadeElement(elem,start,stop,speed,current);},50);
			}

			toc.style.opacity = 0.3;
			var listenElement = toc;
			// var listenElement = toc.getElementsByTagName('TD')[0];
			var focused = false;
			var visible = false;
			listenElement.addEventListener('mouseover',function(){
				if (!visible)
					setTimeout(function(){ if (focused) { visible=true; fadeElement(toc,0.4,1.0,0.2); } },10);
				focused = true;
			},false);
			listenElement.addEventListener('mouseout',function(){
				if (visible)
					setTimeout(function(){ if (!focused) { visible=false; fadeElement(toc,1.0,0.2,-0.1); } },10);
				focused = false;
			},false);

		}


		function tryTOC() {

			// Find the table of contents element:
			var toc = document.getElementById("toc")   /* MediaWiki */
					 || document.getElementsByClassName("table-of-contents")[0]   /* BashFAQ */
					 || document.getElementsByClassName("toc")[0]   /* LeakyTap */
					 || document.getElementsByClassName("wt-toc")[0];   /* Wikitravel */

			if (toc) {

				addButtonsConditionally(toc);

				// toc.style.backgroundColor = '#eeeeee';
				// alert("doing it!");
				toc.style.position = 'fixed';
				toc.style.right = '16px';
				// toc.style.top = '16px';
				// A healthy gap from the top allows the user to access things fixed in the top right of the page, if they can scroll finely enough.
				// toc.style.top = '24px';
				toc.style.right = '4%';
				toc.style.top = '10%';   // We want to be below the search box!
				// toc.style.left = '';
				// toc.style.bottom = '';
				toc.style.zIndex = '5000';
				// fadeElement(toc,1.0,0.4);
				// This might work for a simple toc div
				toc.style.maxHeight = "80%";
				toc.style.maxWidth = "32%";

				/* 
				 * Sometimes specifying max-height: 80% does not work, the toc won't shrink.
				 * This may be when it's a table and not a div.  Then we must set max-height on the content.  (Maybe we don't actually need to set pixels if we find the right element.)
				 */
				toc.id = "toc";
				var maxHeight = window.innerHeight * 0.8 | 0;
				var maxWidth = window.innerWidth * 0.4 | 0;

				/*
				 * WikiMedia tree looks like this: <table id="toc" class="toc"><tbody><tr><td><div id="toctitle"><h2>Contents</h2>...</div> <ul> <li class="toclevel-1 tocsection-1">
				 Here is a long TOC: http://mewiki.project357.com/wiki/X264_Settings#Input.2FOutput
				 */
				// GM_addStyle("#toc ul { overflow: auto; max-width: "+maxWidth+"px; max-height: "+maxHeight+"px; }");
				var rootUL = toc.getElementsByTagName("UL")[0];
				if (!rootUL)
					rootUL = toc;
				// TODO: If we can cleanly separate them, we might want to make put a scrollbar on the content element, leaving the title outside it.
				rootUL.style.overflow = "auto";
				rootUL.style.maxWidth = maxWidth+'px';
				rootUL.style.maxHeight = maxHeight+'px';

				/*
				createFader(toc);
				*/
				//// Alternative rules from table_of_contents_everywhere script:
				toc.id = "toc";
				// GM_addStyle("#toc { position: fixed; top: 10%; right: 4%; background-color: white; color: black; font-weight: normal; padding: 5px; border: 1px solid grey; z-index: 5555; max-height: 80%; overflow: auto; }");
				GM_addStyle("#toc       { opacity: 0.2; }");
				GM_addStyle("#toc:hover { opacity: 1.0; }");

				// For Wikia (tested in Chrome):
				if (getComputedStyle(toc)["background-color"] == "rgba(0, 0, 0, 0)") {
					toc.style.backgroundColor = 'white';
				}

				return true;

			}

			return false;

		}

		// Ideally we want to act before # anchor position occurs, but we may
		// need to wait for the toc if it is not added to the DOM until later.
		if (!tryTOC()) {
			setTimeout(tryTOC,400);
		}

	}



	// In case you have * in your includes, only continue for pages which have
	// "wiki" before "?" in the URL, or who have both toc and content elements.
	var isWikiPage = document.location.href.split("?")[0].match("wiki")
		|| ( document.getElementById("toc") && document.getElementById("content") );

	if (!isWikiPage)
		return;



	// Delay.  Feature 3 and 4 can run a bit later, without *too* much page
	// change, but with significant processor saving!
	setTimeout(function(){



	//// Feature #3 : Indent the blocks so their tree-like structure is visible

	// Oct 2012: Disabled - was making a right mess of the header/nav on Wikia
	if (document.location.host.match(/wikia.com/)) {
		indentSubBlocks = false;
	}

	if (indentSubBlocks) {

		function indent(tag) {
			// By targetting search we avoid indenting any blocks in left-hand-column (sidebar).
			var whereToSearch = document.getElementById('bodyContent') || document.getElementById('content') || document.getElementById('WikiaMainContent') || document.body;
			var elems = whereToSearch.getElementsByTagName(tag);
			if (elems.length == 1)
				return;
			// for (var i=0;i<elems.length;i++) {
			for (var i=elems.length;i-->0;) {
				var elem = elems[i];
				/* Don't fiddle with main heading, siteSub, or TOC. */
				if (elem.className == 'firstHeading')
					continue;
				if (elem.id == 'siteSub')
					continue;
				if (elem.textContent == 'Contents')
					continue;

				// We have found a "heading" element.  Every sibling after this
				// element should be indented a bit.

				//// Current method of indenting:  Create a UL and put everything
				//// inside that.
				// var newChild = document.createElement('blockquote');
				//// Unfortunately blockquotes tend to indent too much!
				// var newChild = document.createElement('DIV');
				//var newChild = document.createElement('UL'); // UL works better with my Folding script, but we must not do this to the TOC!
				var newChild = document.createElement('div'); // <ul>s look wrong on bitbucket wikis (indent too much).  And since I haven't used my folding script recently, I am switching back to a nice <div>.
				newChild.style.marginLeft = '1.0em';
				var toAdd = elem.nextSibling;
				while (toAdd && toAdd.tagName != tag) {
					// That last condition means a h3 might swallow an h2 if they
					// are on the same level!  But it *should* swallow an h4.
					// TODO: We should break if we encounter any marker with level
					// above or equal to our own, otherwise continue to swallow.
					var next = toAdd.nextSibling;
					newChild.appendChild(toAdd);
					toAdd = next;
				}
				elem.parentNode.insertBefore(newChild,elem.nextSibling);

				// CONSIDER: Alternative: Do not swallow at all, do not create
				// newChild and change the page's tree.  Just modify
				// style.marginLeft, resetting it if an incompatible element style
				// already exists there, updating it if we have already indented
				// this element!

				// GM_log("Placed "+newChild+" after "+elem);
			}
		}

		indent("H1"); indent("H2"); indent("H3"); indent("H4"); indent("H5"); indent("H6");

	}



	//// Feature #4: Change underlined headings to overlined headings.

	if (fixUnderlinesToOverlines) {

		// Hide any existing underlines
		// I made this !important to defeat the more specific `.markdown-body h*` rules on GitHub wikis.
		GM_addStyle("h1, h2, h3, h4, h5, h6 { border-bottom: 0 !important; }");

		// Add our own overlines instead
		GM_addStyle("h1, h2, h3, h4, h5, h6 { border-top: 1px solid #AAAAAA; }");

		// Do not use `text-decoration: underline;`.  It will only appear as wide as the text (not filling the page width) and will make the text look like a hyperlink!

	}



	},1000);




} // end doIt


// setTimeout(doIt,2000);
doIt();

})();