/* slidy.js Copyright (c) 2005-2013 W3C (MIT, ERCIM, Keio), All Rights Reserved. W3C liability, trademark, document use and software licensing rules apply, see: http://www.w3.org/Consortium/Legal/copyright-documents http://www.w3.org/Consortium/Legal/copyright-software Defines single name "w3c_slidy" in global namespace Adds event handlers without trampling on any others */ // the slidy object implementation var w3c_slidy = { // classify which kind of browser we're running under ns_pos: (typeof window.pageYOffset!='undefined'), khtml: ((navigator.userAgent).indexOf("KHTML") >= 0 ? true : false), opera: ((navigator.userAgent).indexOf("Opera") >= 0 ? true : false), ipad: ((navigator.userAgent).indexOf("iPad") >= 0 ? true : false), iphone: ((navigator.userAgent).indexOf("iPhone") >= 0 ? true : false), android: ((navigator.userAgent).indexOf("Android") >= 0 ? true : false), ie: (typeof document.all != "undefined" && !this.opera), // data for swipe and double tap detection on touch screens last_tap: 0, prev_tap: 0, start_x: 0, start_y: 0, delta_x: 0, delta_y: 0, // are we running as XHTML? (doesn't work on Opera) is_xhtml: /xml/.test(document.contentType), slide_number: 0, // integer slide count: 0, 1, 2, ... slide_number_element: null, // element containing slide number slides: [], // set to array of slide div's notes: [], // set to array of handout div's backgrounds: [], // set to array of background div's observers: [], // list of observer functions toolbar: null, // element containing toolbar title: null, // document title last_shown: null, // last incrementally shown item eos: null, // span element for end of slide indicator toc: null, // table of contents outline: null, // outline element with the focus selected_text_len: 0, // length of drag selection on document view_all: 0, // 1 to view all slides + handouts want_toolbar: true, // user preference to show/hide toolbar mouse_click_enabled: true, // enables left click for next slide scroll_hack: 0, // IE work around for position: fixed disable_slide_click: false, // used by clicked anchors lang: "en", // updated to language specified by html file help_anchor: null, // used for keyboard focus hack in showToolbar() help_page: "http://www.w3.org/Talks/Tools/Slidy2/help/help.html", help_text: "Navigate with mouse click, space bar, Cursor Left/Right, " + "or Pg Up and Pg Dn. Use S and B to change font size.", size_index: 0, size_adjustment: 0, sizes: new Array("10pt", "12pt", "14pt", "16pt", "18pt", "20pt", "22pt", "24pt", "26pt", "28pt", "30pt", "32pt"), // needed for efficient resizing last_width: 0, last_height: 0, // Needed for cross browser support for relative width/height on // object elements. The work around is to save width/height attributes // and then to recompute absolute width/height dimensions on resizing objects: [], up_link: null, // attach initialiation event handlers set_up: function () { var init = function() { w3c_slidy.init(); }; if (typeof window.addEventListener != "undefined") { window.addEventListener("load", init, false); } else { window.attachEvent("onload", init); } }, hide_slides: function () { if (this.body && !w3c_slidy.initialized) { this.body.style.visibility = "hidden"; } else { setTimeout(w3c_slidy.hide_slides, 50); } }, // hack to persuade IE to compute correct document height // as needed for simulating fixed positioning of toolbar ie_hack: function () { window.resizeBy(0,-1); window.resizeBy(0, 1); }, init: function () { this.body = document.body; if (typeof setDisplay === "function") { setDisplay("top-container", false); } this.body.style.visibility = "visible"; this.init_localization(); this.add_toolbar(); this.wrap_implicit_slides(); this.collect_slides(); this.collect_notes(); this.collect_backgrounds(); this.objects = this.body.getElementsByTagName("object"); this.patch_anchors(); this.slide_number = this.find_slide_number(location.href); window.offscreenbuffering = true; this.size_adjustment = this.find_size_adjust(); this.time_left = this.find_duration(); this.hide_image_toolbar(); // suppress IE image toolbar popup this.init_outliner(); // activate fold/unfold support this.title = document.title; this.keyboardless = (this.ipad||this.iphone||this.android); if (this.keyboardless) { w3c_slidy.remove_class(w3c_slidy.toolbar, "hidden") this.want_toolbar = 0; } // work around for opera bug this.is_xhtml = (this.body.tagName == "BODY" ? false : true); if (this.slides.length > 0) { var slide = this.slides[this.slide_number]; if (this.slide_number > 0) { this.set_visibility_all_incremental("visible"); this.last_shown = this.previous_incremental_item(null); this.set_eos_status(true); } else { this.last_shown = null; this.set_visibility_all_incremental("hidden"); this.set_eos_status( !this.next_incremental_item(this.last_shown)); } this.set_location(); this.add_class(this.slides[0], "first-slide"); w3c_slidy.show_slide(slide); } this.toc = this.table_of_contents(); this.add_initial_prompt(); // bind event handlers without interfering with custom page scripts // Tap events behave too weirdly to support clicks reliably on // iPhone and iPad, so exclude these from click handler if (!this.keyboardless) { this.add_listener(this.body, "click", this.mouse_button_click); this.add_listener(this.body, "mousedown", this.mouse_button_down); } this.add_listener(document, "keydown", this.key_down); this.add_listener(document, "keypress", this.key_press); this.add_listener(window, "resize", this.resized); this.add_listener(window, "scroll", this.scrolled); this.add_listener(window, "unload", this.unloaded); this.add_listener(document, "gesturechange", function () { return false; }); this.attach_touch_handers(this.slides); this.single_slide_view(); this.resized(); this.show_toolbar(); // for back button detection setInterval(function () { w3c_slidy.check_location(); }, 200); w3c_slidy.initialized = true; }, // create div element with links to each slide table_of_contents: function () { var toc = this.create_element("div"); this.add_class(toc, "slidy_toc hidden"); //toc.setAttribute("tabindex", "0"); var heading = this.create_element("div"); this.add_class(heading, "toc-heading"); heading.innerHTML = this.localize("Table of Contents"); toc.appendChild(heading); var previous = null; for (var i = 0; i < this.slides.length; ++i) { var title = this.has_class(this.slides[i], "title"); var num = document.createTextNode((i + 1) + ". "); toc.appendChild(num); var a = this.create_element("a"); a.setAttribute("href", "#(" + (i+1) + ")"); if (title) { this.add_class(a, "titleslide"); } var name = document.createTextNode(this.slide_name(i)); a.appendChild(name); a.onclick = w3c_slidy.toc_click; a.onkeydown = w3c_slidy.toc_key_down; a.previous = previous; if (previous) { previous.next = a; } toc.appendChild(a); if (i == 0) { toc.first = a; } if (i < this.slides.length - 1) { var br = this.create_element("br"); toc.appendChild(br); } previous = a; } toc.focus = function () { if (this.first) { this.first.focus(); } } toc.onmouseup = w3c_slidy.mouse_button_up; toc.onclick = function (e) { e||(e=window.event); if (w3c_slidy.selected_text_len <= 0) { w3c_slidy.hide_table_of_contents(true); } w3c_slidy.stop_propagation(e); if (e.cancel != undefined) { e.cancel = true; } if (e.returnValue != undefined) { e.returnValue = false; } return false; }; this.body.insertBefore(toc, this.body.firstChild); return toc; }, is_shown_toc: function () { return !w3c_slidy.has_class(w3c_slidy.toc, "hidden"); }, show_table_of_contents: function () { w3c_slidy.remove_class(w3c_slidy.toc, "hidden"); var toc = w3c_slidy.toc; toc.focus(); }, hide_table_of_contents: function (focus) { w3c_slidy.add_class(w3c_slidy.toc, "hidden"); if (focus && !w3c_slidy.opera && !w3c_slidy.has_class(w3c_slidy.toc, "hidden")) { w3c_slidy.set_focus(); } }, toggle_table_of_contents: function () { if (w3c_slidy.is_shown_toc()) { w3c_slidy.hide_table_of_contents(true); } else { w3c_slidy.show_table_of_contents(); } }, // called on clicking toc entry toc_click: function (e) { if (!e) { e = window.event; } var target = w3c_slidy.get_target(e); if (target && target.nodeType == 1) { var uri = target.getAttribute("href"); if (uri) { var slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.slide_number = w3c_slidy.find_slide_number(uri); slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.last_shown = null; w3c_slidy.set_location(); w3c_slidy.set_visibility_all_incremental("hidden"); w3c_slidy.set_eos_status( !w3c_slidy.next_incremental_item(w3c_slidy.last_shown)); w3c_slidy.show_slide(slide); try { if (!w3c_slidy.opera) { w3c_slidy.set_focus(); } } catch (e) { } } } w3c_slidy.hide_table_of_contents(true); w3c_slidy.stop_propagation(e); return w3c_slidy.cancel(e); }, // called onkeydown for toc entry toc_key_down: function (event) { var key; if (!event) { var event = window.event; } // kludge around NS/IE differences if (window.event) { key = window.event.keyCode; } else if (event.which) { key = event.which; } else { return true; // Yikes! unknown browser } // ignore event if key value is zero // as for alt on Opera and Konqueror if (!key) { return true; } // check for concurrent control/command/alt key // but are these only present on mouse events? if (event.ctrlKey || event.altKey) { return true; } if (key == 13) { var uri = this.getAttribute("href"); if (uri) { var slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.slide_number = w3c_slidy.find_slide_number(uri); slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.last_shown = null; w3c_slidy.set_location(); w3c_slidy.set_visibility_all_incremental("hidden"); w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item( w3c_slidy.last_shown)); w3c_slidy.show_slide(slide); try { if (!w3c_slidy.opera) { w3c_slidy.set_focus(); } } catch (e) { } } w3c_slidy.hide_table_of_contents(true); return w3c_slidy.cancel(event); } if (key == 40 && this.next) { this.next.focus(); return w3c_slidy.cancel(event); } if (key == 38 && this.previous) { this.previous.focus(); return w3c_slidy.cancel(event); } return true; }, touchstart: function (e) { // a double touch often starts with a // single touch due to fingers touching // down at slightly different times // thus avoid calling preventDefault here this.prev_tap = this.last_tap; this.last_tap = (new Date).getTime(); var tap_delay = this.last_tap - this.prev_tap; if (tap_delay <= 200) { // double tap } var touch = e.touches[0]; this.pageX = touch.pageX; this.pageY = touch.pageY; this.screenX = touch.screenX; this.screenY = touch.screenY; this.clientX = touch.clientX; this.clientY = touch.clientY; this.delta_x = this.delta_y = 0; }, touchmove: function (e) { // override native gestures for single touch if (e.touches.length > 1) { return; } e.preventDefault(); var touch = e.touches[0]; this.delta_x = touch.pageX - this.pageX; this.delta_y = touch.pageY - this.pageY; }, touchend: function (e) { // default behavior for multi-touch if (e.touches.length > 1) { return; } var delay = (new Date).getTime() - this.last_tap; var dx = this.delta_x; var dy = this.delta_y; var abs_dx = Math.abs(dx); var abs_dy = Math.abs(dy); if (delay < 500 && (abs_dx > 100 || abs_dy > 100)) { if (abs_dx > 0.5 * abs_dy) { e.preventDefault(); if (dx < 0) { w3c_slidy.next_slide(true); } else { w3c_slidy.previous_slide(true); } } else if (abs_dy > 2 * abs_dx) { e.preventDefault(); w3c_slidy.toggle_table_of_contents(); } } }, // ### OBSOLETE ### before_print: function () { this.show_all_slides(); this.hide_toolbar(); alert("before print"); }, // ### OBSOLETE ### after_print: function () { if (!this.view_all) { this.single_slide_view(); this.show_toolbar(); } alert("after print"); }, // ### OBSOLETE ### print_slides: function () { this.before_print(); window.print(); this.after_print(); }, // ### OBSOLETE ?? ### toggle_view: function () { if (this.view_all) { this.single_slide_view(); this.show_toolbar(); this.view_all = 0; } else { this.show_all_slides(); this.hide_toolbar(); this.view_all = 1; } }, // prepare for printing ### OBSOLETE ### show_all_slides: function () { this.remove_class(this.body, "single_slide"); this.set_visibility_all_incremental("visible"); }, // restore after printing ### OBSOLETE ### single_slide_view: function () { this.add_class(this.body, "single_slide"); this.set_visibility_all_incremental("visible"); this.last_shown = this.previous_incremental_item(null); }, // suppress IE's image toolbar pop up hide_image_toolbar: function () { if (!this.ns_pos) { var images = document.getElementsByTagName("IMG"); for (var i = 0; i < images.length; ++i) { images[i].setAttribute("galleryimg", "no"); } } }, unloaded: function (e) { }, // Safari and Konqueror don't yet support getComputedStyle() // and they always reload page when location.href is updated is_KHTML: function () { var agent = navigator.userAgent; return (agent.indexOf("KHTML") >= 0 ? true : false); }, // find slide name from first h1 element // default to document title + slide number slide_name: function (index) { var name = null; var slide = this.slides[index]; var heading = this.find_heading(slide); if (heading) { name = this.extract_text(heading); } if (!name) { name = this.title + "(" + (index + 1) + ")"; } name.replace(/\&/g, "&"); name.replace(/\</g, "<"); name.replace(/\>/g, ">"); return name; }, // find first h1 element in DOM tree find_heading: function (node) { if (!node || node.nodeType != 1) { return null; } if (node.nodeName == "H1" || node.nodeName == "h1") { return node; } var child = node.firstChild; while (child) { node = this.find_heading(child); if (node) { return node; } child = child.nextSibling; } return null; }, // recursively extract text from DOM tree extract_text: function (node) { if (!node) { return ""; } // text nodes if (node.nodeType == 3) { return node.nodeValue; } // elements if (node.nodeType == 1) { node = node.firstChild; var text = ""; while (node) { text = text + this.extract_text(node); node = node.nextSibling; } return text; } return ""; }, // find copyright text from meta element find_copyright: function () { var name, content; var meta = document.getElementsByTagName("meta"); for (var i = 0; i < meta.length; ++i) { name = meta[i].getAttribute("name"); content = meta[i].getAttribute("content"); if (name == "copyright") { return content; } } return null; }, find_size_adjust: function () { var name, content, offset; var meta = document.getElementsByTagName("meta"); for (var i = 0; i < meta.length; ++i) { name = meta[i].getAttribute("name"); content = meta[i].getAttribute("content"); if (name == "font-size-adjustment") { return 1 * content; } } return 1; }, // <meta name="duration" content="20" > for 20 minutes find_duration: function () { var name, content, offset; var meta = document.getElementsByTagName("meta"); for (var i = 0; i < meta.length; ++i) { name = meta[i].getAttribute("name"); content = meta[i].getAttribute("content"); if (name == "duration") { return 60000 * content; } } return null; }, replace_by_non_breaking_space: function (str) { for (var i = 0; i < str.length; ++i) { str[i] = 160; } }, // ### CHECK ME ### is use of "li" okay for text/html? // for XHTML do we also need to specify namespace? init_outliner: function () { var items = document.getElementsByTagName("li"); for (var i = 0; i < items.length; ++i) { var target = items[i]; if (!this.has_class(target.parentNode, "outline")) { continue; } target.onclick = this.outline_click; if (this.foldable(target)) { target.foldable = true; target.onfocus = function () { w3c_slidy.outline = this; }; target.onblur = function () { w3c_slidy.outline = null; }; if (!target.getAttribute("tabindex")) { target.setAttribute("tabindex", "0"); } if (this.has_class(target, "expand")) { this.unfold(target); } else { this.fold(target); } } else { this.add_class(target, "nofold"); target.visible = true; target.foldable = false; } } }, foldable: function (item) { if (!item || item.nodeType != 1) { return false; } var node = item.firstChild; while (node) { if (node.nodeType == 1 && this.is_block(node)) { return true; } node = node.nextSibling; } return false; }, // ### CHECK ME ### switch to add/remove "hidden" class fold: function (item) { if (item) { this.remove_class(item, "unfolded"); this.add_class(item, "folded"); } var node = item ? item.firstChild : null; while (node) { if (node.nodeType == 1 && this.is_block(node)) { // element w3c_slidy.add_class(node, "hidden"); } node = node.nextSibling; } item.visible = false; }, // ### CHECK ME ### switch to add/remove "hidden" class unfold: function (item) { if (item) { this.add_class(item, "unfolded"); this.remove_class(item, "folded"); } var node = item ? item.firstChild : null; while (node) { if (node.nodeType == 1 && this.is_block(node)) { // element w3c_slidy.remove_class(node, "hidden"); } node = node.nextSibling; } item.visible = true; }, outline_click: function (e) { if (!e) { e = window.event; } var rightclick = false; var target = w3c_slidy.get_target(e); while (target && target.visible == undefined) { target = target.parentNode; } if (!target) { return true; } if (e.which) { rightclick = (e.which == 3); } else if (e.button) { rightclick = (e.button == 2); } if (!rightclick && target.visible != undefined) { if (target.foldable) { if (target.visible) { w3c_slidy.fold(target); } else { w3c_slidy.unfold(target); } } w3c_slidy.stop_propagation(e); e.cancel = true; e.returnValue = false; } return false; }, add_initial_prompt: function () { var prompt = this.create_element("div"); prompt.setAttribute("class", "initial_prompt"); var p1 = this.create_element("p"); prompt.appendChild(p1); p1.setAttribute("class", "help"); if (this.keyboardless) { p1.innerHTML = "swipe left to move to next slide"; } else { p1.innerHTML = "Space, Right Arrow or swipe left to move to " + "next slide, click help below for more details"; } this.add_listener(prompt, "click", function (e) { this.body.removeChild(prompt); w3c_slidy.stop_propagation(e); if (e.cancel != undefined) { e.cancel = true; } if (e.returnValue != undefined) { e.returnValue = false; } return false; }); this.body.appendChild(prompt); this.initial_prompt = prompt; setTimeout(function() { w3c_slidy.body.removeChild(prompt); }, 5000); }, add_toolbar: function () { var counter, page; this.toolbar = this.create_element("div"); this.toolbar.setAttribute("class", "toolbar"); // a reasonably behaved browser var right = this.create_element("div"); right.setAttribute("style", "float: right; text-align: right"); counter = this.create_element("span") counter.innerHTML = this.localize("slide") + " n/m"; right.appendChild(counter); this.toolbar.appendChild(right); var left = this.create_element("div"); left.setAttribute("style", "text-align: left"); // global end of slide indicator this.eos = this.create_element("span"); this.eos.innerHTML = "* "; left.appendChild(this.eos); var hamburger = this.create_element("a"); hamburger.setAttribute("href", "javascript:toggleOptions()"); hamburger.innerHTML = "≡"; left.appendChild(hamburger); this.spacer = this.create_element("span"); this.spacer.innerHTML = " "; left.appendChild(this.spacer); var help = this.create_element("a"); help.setAttribute("href", this.help_page); help.setAttribute("title", this.localize(this.help_text)); help.innerHTML = this.localize("help?"); left.appendChild(help); this.help_anchor = help; // save for focus hack var gap1 = document.createTextNode(" "); left.appendChild(gap1); var contents = this.create_element("a"); contents.setAttribute("href", "javascript:w3c_slidy.toggle_table_of_contents()"); contents.setAttribute("title", this.localize("table of contents")); contents.innerHTML = this.localize("contents?"); left.appendChild(contents); var gap2 = document.createTextNode(" "); left.appendChild(gap2); var links = document.getElementsByTagName("link"); for (var i = 0; i < links.length; i++) { if (links[i].getAttribute("rel") == "prev" ) { w3c_slidy.up_link = links[i].getAttribute("href"); } } if (w3c_slidy.up_link) { var contents = this.create_element("a"); contents.setAttribute("href", w3c_slidy.up_link); contents.setAttribute("title", this.localize("Pre-slideshow link")); contents.innerHTML = this.localize("up?"); left.appendChild(contents); } var copyright = this.find_copyright(); if (copyright) { var span = this.create_element("span"); span.className = "copyright"; span.innerHTML = copyright; left.appendChild(span); } this.toolbar.setAttribute("tabindex", "0"); this.toolbar.appendChild(left); // ensure that click isn't passed through to the page this.toolbar.onclick = function (e) { if (!e) { e = window.event; } var target = e.target; if (!target && e.srcElement) { target = e.srcElement; } // work around Safari bug if (target && target.nodeType == 3) { target = target.parentNode; } w3c_slidy.stop_propagation(e); if (target && target.nodeName.toLowerCase() != "a") { w3c_slidy.mouse_button_click(e); } }; this.slide_number_element = counter; this.set_eos_status(false); this.body.appendChild(this.toolbar); }, // wysiwyg editors make it hard to use div elements // e.g. amaya loses the div when you copy and paste // this function wraps div elements around implicit // slides which start with an h1 element and continue // up to the next heading or div element wrap_implicit_slides: function () { var i, heading, node, next, div; var headings = document.getElementsByTagName("h1"); if (!headings) { return; } for (i = 0; i < headings.length; ++i) { heading = headings[i]; if (heading.parentNode != this.body) { continue; } node = heading.nextSibling; div = document.createElement("div"); this.add_class(div, "slide"); this.body.replaceChild(div, heading); div.appendChild(heading); while (node) { if (node.nodeType == 1) { // an element if (node.nodeName == "H1" || node.nodeName == "h1") { break; } if (node.nodeName == "DIV" || node.nodeName == "div") { if (this.has_class(node, "slide")) { break; } if (this.has_class(node, "handout")) { break; } } } next = node.nextSibling; node = this.body.removeChild(node); div.appendChild(node); node = next; } } }, attach_touch_handers: function(slides) { var i, slide; for (i = 0; i < slides.length; ++i) { slide = slides[i]; this.add_listener(slide, "touchstart", this.touchstart); this.add_listener(slide, "touchmove", this.touchmove); this.add_listener(slide, "touchend", this.touchend); } }, // return new array of all slides collect_slides: function () { var slides = new Array(); var divs = this.body.getElementsByTagName("div"); for (var i = 0; i < divs.length; ++i) { div = divs.item(i); if (this.has_class(div, "slide")) { // add slide to collection slides[slides.length] = div; // hide each slide as it is found this.add_class(div, "hidden"); // add dummy <br/> at end for scrolling hack var node1 = document.createElement("br"); div.appendChild(node1); var node2 = document.createElement("br"); div.appendChild(node2); } else if (this.has_class(div, "background")) { // work around for Firefox SVG reload bug // which otherwise replaces 1st SVG graphic with 2nd div.style.display = "block"; } } this.slides = slides; }, // return new array of all <div class="handout"> collect_notes: function () { var notes = new Array(); var divs = this.body.getElementsByTagName("div"); for (var i = 0; i < divs.length; ++i) { div = divs.item(i); if (this.has_class(div, "handout")) { // add note to collection notes[notes.length] = div; // and hide it this.add_class(div, "hidden"); } } this.notes = notes; }, // return new array of all <div class="background"> // including named backgrounds e.g. class="background titlepage" collect_backgrounds: function () { var backgrounds = new Array(); var divs = this.body.getElementsByTagName("div"); for (var i = 0; i < divs.length; ++i) { div = divs.item(i); if (this.has_class(div, "background")) { // add background to collection backgrounds[backgrounds.length] = div; // and hide it this.add_class(div, "hidden"); } } this.backgrounds = backgrounds; }, // set click handlers on all anchors patch_anchors: function () { var self = w3c_slidy; var handler = function (event) { // compare this.href with location.href // for link to another slide in this doc if (self.page_address(this.href) == self.page_address( location.href)) { // yes, so find new slide number var newslidenum = self.find_slide_number(this.href); if (newslidenum != self.slide_number) { var slide = self.slides[self.slide_number]; self.hide_slide(slide); self.slide_number = newslidenum; slide = self.slides[self.slide_number]; self.show_slide(slide); self.set_location(); } } else { w3c_slidy.stop_propagation(event); } this.blur(); self.disable_slide_click = true; }; var anchors = this.body.getElementsByTagName("a"); for (var i = 0; i < anchors.length; ++i) { if (window.addEventListener) { anchors[i].addEventListener("click", handler, false); } else { anchors[i].attachEvent("onclick", handler); } } }, // ### CHECK ME ### see which functions are invoked via setTimeout // either directly or indirectly for use of w3c_slidy vs this show_slide_number: function () { var timer = w3c_slidy.get_timer(); w3c_slidy.slide_number_element.innerHTML = timer + w3c_slidy.localize("slide") + " " + (w3c_slidy.slide_number + 1) + "/" + w3c_slidy.slides.length; }, // every 200mS check if the location has been changed as a // result of the user activating the Back button/menu item // doesn't work for Opera < 9.5 check_location: function () { var hash = location.hash; if (w3c_slidy.slide_number > 0 && (hash == "" || hash == "#")) { w3c_slidy.goto_slide(0); } else if (hash.length > 2 && hash != "#(" + (w3c_slidy.slide_number + 1)+")") { var num = parseInt(location.hash.substr(2)); if (!isNaN(num)) { w3c_slidy.goto_slide(num - 1); } } if (w3c_slidy.time_left && w3c_slidy.slide_number > 0) { w3c_slidy.show_slide_number(); if (w3c_slidy.time_left > 0) { w3c_slidy.time_left -= 200; } } }, get_timer: function () { var timer = ""; if (w3c_slidy.time_left) { var mins, secs; secs = Math.floor(w3c_slidy.time_left/1000); mins = Math.floor(secs / 60); secs = secs % 60; timer = (mins ? mins+"m" : "") + secs + "s "; } return timer; }, // this doesn't push location onto history stack for IE // for which a hidden iframe hack is needed: load page into // the iframe with script that set's parent's location.hash // but that won't work for standalone use unless we can // create the page dynamically via a javascript: URL // ### use history.pushState if available set_location: function () { var uri = w3c_slidy.page_address(location.href); var hash = "#(" + (w3c_slidy.slide_number+1) + ")"; if (w3c_slidy.slide_number >= 0) uri = uri + hash; if (typeof(history.pushState) != "undefined") { document.title = w3c_slidy.title + " (" + (w3c_slidy.slide_number+1) + ")"; history.pushState(0, document.title, hash); w3c_slidy.show_slide_number(); w3c_slidy.notify_observers(); return; } if (uri != location.href) {// && !khtml location.href = uri; } if (this.khtml) { hash = "(" + (w3c_slidy.slide_number+1) + ")"; } if (!this.ie && location.hash != hash && location.hash != "") { location.hash = hash; } document.title = w3c_slidy.title + " (" + (w3c_slidy.slide_number+1) + ")"; w3c_slidy.show_slide_number(); w3c_slidy.notify_observers(); }, notify_observers: function () { var slide = this.slides[this.slide_number]; for (var i = 0; i < this.observers.length; ++i) { this.observers[i](this.slide_number+1, this.find_heading(slide).innerText, location.href); } }, add_observer: function (observer) { for (var i = 0; i < this.observers.length; ++i) { if (observer == this.observers[i]) { return; } } this.observers.push(observer); }, remove_observer: function (o) { for (var i = 0; i < this.observers.length; ++i) { if (observer == this.observers[i]) { this.observers.splice(i,1); break; } } }, page_address: function (uri) { var i = uri.indexOf("#"); if (i < 0) { i = uri.indexOf("%23"); } // check if anchor is entire page if (i < 0) { return uri; // yes } return uri.substr(0, i); }, // history hack with thanks to Bertrand Le Roy push_hash: function (hash) { if (hash == "") { hash = "#(1)"; } window.location.hash = hash; var doc = document.getElementById( "historyFrame").contentWindow.document; doc.open("javascript:'<html></html>'"); doc.write("<html><head><script>" + "window.parent.w3c_slidy.on_frame_loaded('"+ (hash) + "');</script></head><body>hello mum</body></html>"); doc.close(); }, // find current slide based upon location // first find target anchor and then look // for associated div element enclosing it // finally map that to slide number find_slide_number: function (uri) { // first get anchor from page location var i = uri.indexOf("#"); // check if anchor is entire page if (i < 0) { return 0; // yes } var anchor = unescape(uri.substr(i+1)); // now use anchor as XML ID to find target var target = document.getElementById(anchor); if (!target) { // does anchor look like "(2)" for slide 2 ?? // where first slide is (1) var re = /\((\d)+\)/; if (anchor.match(re)) { var num = parseInt(anchor.substring(1, anchor.length-1)); if (num > this.slides.length) { num = 1; } if (--num < 0) { num = 0; } return num; } // accept [2] for backwards compatibility re = /\[(\d)+\]/; if (anchor.match(re)) { var num = parseInt(anchor.substring(1, anchor.length-1)); if (num > this.slides.length) { num = 1; } if (--num < 0) { num = 0; } return num; } // oh dear unknown anchor return 0; } // search for enclosing slide while (true) { // browser coerces html elements to uppercase! if (target.nodeName.toLowerCase() == "div" && this.has_class(target, "slide")) { // found the slide element break; } // otherwise try parent element if any target = target.parentNode; if (!target) { return 0; // no luck! } } for (i = 0; i < slides.length; ++i) { if (slides[i] == target) return i; // success } // oh dear still no luck return 0; }, previous_slide: function (incremental) { if (!w3c_slidy.view_all) { var slide; if ((incremental || w3c_slidy.slide_number == 0) && w3c_slidy.last_shown != null) { w3c_slidy.last_shown = w3c_slidy.hide_previous_item(w3c_slidy.last_shown); w3c_slidy.set_eos_status(false); } else if (w3c_slidy.slide_number > 0) { slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.slide_number = w3c_slidy.slide_number - 1; slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.set_visibility_all_incremental("visible"); w3c_slidy.last_shown = w3c_slidy.previous_incremental_item(null); w3c_slidy.set_eos_status(true); w3c_slidy.show_slide(slide); } w3c_slidy.set_location(); if (!w3c_slidy.ns_pos) { w3c_slidy.refresh_toolbar(200); } } }, next_slide: function (incremental) { if (!w3c_slidy.view_all) { var slide, last = w3c_slidy.last_shown; if (incremental || w3c_slidy.slide_number == w3c_slidy.slides.length - 1) { w3c_slidy.last_shown = w3c_slidy.reveal_next_item(w3c_slidy.last_shown); } if ((!incremental || w3c_slidy.last_shown == null) && w3c_slidy.slide_number < w3c_slidy.slides.length - 1) { slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.slide_number = w3c_slidy.slide_number + 1; slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.last_shown = null; w3c_slidy.set_visibility_all_incremental("hidden"); w3c_slidy.show_slide(slide); } else if (!w3c_slidy.last_shown) { if (last && incremental) { w3c_slidy.last_shown = last; } } w3c_slidy.set_location(); w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item( w3c_slidy.last_shown)); if (!w3c_slidy.ns_pos) { w3c_slidy.refresh_toolbar(200); } } }, // to first slide with nothing revealed // i.e. state at start of presentation first_slide: function () { if (!w3c_slidy.view_all) { var slide; if (w3c_slidy.slide_number != 0) { slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.slide_number = 0; slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.last_shown = null; w3c_slidy.set_visibility_all_incremental("hidden"); w3c_slidy.show_slide(slide); } w3c_slidy.set_eos_status( !w3c_slidy.next_incremental_item(w3c_slidy.last_shown)); w3c_slidy.set_location(); } }, // goto last slide with everything revealed // i.e. state at end of presentation last_slide: function () { if (!w3c_slidy.view_all) { var slide; w3c_slidy.last_shown = null; if (w3c_slidy.last_shown == null && w3c_slidy.slide_number < w3c_slidy.slides.length - 1) { slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.slide_number = w3c_slidy.slides.length - 1; slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.set_visibility_all_incremental("visible"); w3c_slidy.last_shown = w3c_slidy.previous_incremental_item(null); w3c_slidy.show_slide(slide); } else { w3c_slidy.set_visibility_all_incremental("visible"); w3c_slidy.last_shown = w3c_slidy.previous_incremental_item(null); } w3c_slidy.set_eos_status(true); w3c_slidy.set_location(); } }, // ### check this and consider add/remove class set_eos_status: function (state) { if (this.eos) { this.eos.style.color = (state ? "rgb(240,240,240)" : "red"); } }, // first slide is 0 goto_slide: function (num) { var slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.slide_number = num; slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.last_shown = null; w3c_slidy.set_visibility_all_incremental("hidden"); w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item( w3c_slidy.last_shown)); document.title = w3c_slidy.title + " (" + (w3c_slidy.slide_number+1) + ")"; w3c_slidy.show_slide(slide); w3c_slidy.show_slide_number(); }, show_slide: function (slide) { this.sync_background(slide); this.remove_class(slide, "hidden"); }, hide_slide: function (slide) { this.add_class(slide, "hidden"); }, set_focus: function (element) { if (element) { element.focus(); } else { w3c_slidy.help_anchor.focus(); setTimeout(function() { w3c_slidy.help_anchor.blur(); }, 1); } }, // show just the backgrounds pertinent to this slide // when slide background-color is transparent // this should now work with rgba color values sync_background: function (slide) { var background; var bgColor; if (slide.currentStyle) { bgColor = slide.currentStyle["backgroundColor"]; } else if (document.defaultView) { var styles = document.defaultView.getComputedStyle(slide,null); if (styles) { bgColor = styles.getPropertyValue("background-color"); } else { // broken implementation probably due Safari or Konqueror bgColor = "transparent"; } } else { bgColor == "transparent"; } if (bgColor == "transparent" || bgColor.indexOf("rgba") >= 0 || bgColor.indexOf("opacity") >= 0) { var slideClass = this.get_class_list(slide); for (var i = 0; i < this.backgrounds.length; i++) { background = this.backgrounds[i]; var bgClass = this.get_class_list(background); if (this.matching_background(slideClass, bgClass)) { this.remove_class(background, "hidden"); } else { this.add_class(background, "hidden"); } } } else {// forcibly hide all backgrounds this.hide_backgrounds(); } }, hide_backgrounds: function () { for (var i = 0; i < this.backgrounds.length; i++) { background = this.backgrounds[i]; this.add_class(background, "hidden"); } }, // compare classes for slide and background matching_background: function (slideClass, bgClass) { var i, count, pattern, result; // define pattern as regular expression pattern = /\w+/g; // check background class names result = bgClass.match(pattern); for (i = count = 0; i < result.length; i++) { if (result[i] == "hidden") { continue; } if (result[i] == "background") { continue; } ++count; } if (count == 0) { // default match return true; } // check for matches and place result in array result = slideClass.match(pattern); // now check if desired name is present for background for (i = count = 0; i < result.length; i++) { if (result[i] == "hidden") { continue; } if (this.has_token(bgClass, result[i])) { return true; } } return false; }, resized: function () { var width = 0; width = window.innerWidth; // Non IE browser var height = 0; height = window.innerHeight; // Non IE browser if (height && (width/height > 1.05*1024/768)) { width = height * 1024.0/768; } // IE fires onresize even when only font size is changed! // so we do a check to avoid blocking < and > actions if (width != w3c_slidy.last_width || height != w3c_slidy.last_height) { if (width >= 1100) { w3c_slidy.size_index = 5; // 4 } else if (width >= 1000) { w3c_slidy.size_index = 4; // 3 } else if (width >= 800) { w3c_slidy.size_index = 3; // 2 } else if (width >= 600) { w3c_slidy.size_index = 2; // 1 } else if (width) { w3c_slidy.size_index = 0; } // add in font size adjustment from meta element e.g. // <meta name="font-size-adjustment" content="-2" > // useful when slides have too much content ;-) if (0 <= w3c_slidy.size_index + w3c_slidy.size_adjustment && w3c_slidy.size_index + w3c_slidy.size_adjustment < w3c_slidy.sizes.length) { w3c_slidy.size_index = w3c_slidy.size_index + w3c_slidy.size_adjustment; } // enables cross browser use of relative width/height // on object elements for use with SVG and Flash media w3c_slidy.adjust_object_dimensions(width, height); if (this.body.style.fontSize != w3c_slidy.sizes[w3c_slidy.size_index]) { this.body.style.fontSize = w3c_slidy.sizes[w3c_slidy.size_index]; } w3c_slidy.last_width = width; w3c_slidy.last_height = height; // force reflow to work around Mozilla bug if (w3c_slidy.ns_pos) { var slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.show_slide(slide); } // force correct positioning of toolbar w3c_slidy.refresh_toolbar(200); } }, scrolled: function () { if (w3c_slidy.toolbar && !w3c_slidy.ns_pos) { w3c_slidy.hack_offset = w3c_slidy.scroll_x_offset(); // hide toolbar w3c_slidy.toolbar.style.display = "none"; // make it reappear later if (w3c_slidy.scrollhack == 0 && !w3c_slidy.view_all) { setTimeout(function () {w3c_slidy.show_toolbar(); }, 1000); w3c_slidy.scrollhack = 1; } } }, hide_toolbar: function () { w3c_slidy.add_class(w3c_slidy.toolbar, "hidden"); window.focus(); }, refresh_toolbar: function (interval) { if (!w3c_slidy.ns_pos) { w3c_slidy.hide_toolbar(); setTimeout(function () { w3c_slidy.show_toolbar(); }, interval); } }, // restores toolbar after short delay show_toolbar: function () { if (w3c_slidy.want_toolbar) { w3c_slidy.toolbar.style.display = "block"; if (!w3c_slidy.ns_pos) { // adjust position to allow for scrolling var xoffset = w3c_slidy.scroll_x_offset(); w3c_slidy.toolbar.style.left = xoffset; w3c_slidy.toolbar.style.right = xoffset; w3c_slidy.toolbar.style.bottom = 0; //bottom; } w3c_slidy.remove_class(w3c_slidy.toolbar, "hidden"); } w3c_slidy.scrollhack = 0; // set the keyboard focus to the help link on the // toolbar to ensure that document has the focus // IE doesn't always work with window.focus() // and this hack has benefit of Enter for help try { if (!w3c_slidy.opera) { w3c_slidy.set_focus(); } } catch (e) { } }, // invoked via F key toggle_toolbar: function () { if (!w3c_slidy.view_all) { if (w3c_slidy.has_class(w3c_slidy.toolbar, "hidden")) { w3c_slidy.remove_class(w3c_slidy.toolbar, "hidden") w3c_slidy.want_toolbar = 1; } else { w3c_slidy.add_class(w3c_slidy.toolbar, "hidden") w3c_slidy.want_toolbar = 0; } } }, scroll_x_offset: function () { if (window.pageXOffset) { return self.pageXOffset; } if (document.documentElement && document.documentElement.scrollLeft) { return document.documentElement.scrollLeft; } if (this.body) { return this.body.scrollLeft; } return 0; }, scroll_y_offset: function () { if (window.pageYOffset) { return self.pageYOffset; } if (document.documentElement && document.documentElement.scrollTop) { return document.documentElement.scrollTop; } if (this.body) { return this.body.scrollTop; } return 0; }, // looking for a way to determine height of slide content // the slide itself is set to the height of the window optimize_font_size: function () { var slide = w3c_slidy.slides[w3c_slidy.slide_number]; //var dh = documentHeight(); //getDocHeight(document); var dh = slide.scrollHeight; var wh = getWindowHeight(); var u = 100 * dh / wh; alert("window utilization = " + u + "% (doc " + dh + " win " + wh + ")"); }, // from document object get_doc_height: function (doc) { if (!doc) { doc = document; } if (doc && doc.body && doc.body.offsetHeight) { return doc.body.offsetHeight; // ns/gecko syntax } if (doc && doc.body && doc.body.scrollHeight) { return doc.body.scrollHeight; } alert("couldn't determine document height"); }, get_window_height: function () { return window.innerHeight; }, document_height: function () { var sh, oh; sh = this.body.scrollHeight; oh = this.body.offsetHeight; if (sh && oh) { return (sh > oh ? sh : oh); } // no idea! return 0; }, smaller: function () { if (w3c_slidy.size_index > 0) { --w3c_slidy.size_index; } w3c_slidy.toolbar.style.display = "none"; this.body.style.fontSize = w3c_slidy.sizes[w3c_slidy.size_index]; var slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.show_slide(slide); setTimeout(function () { w3c_slidy.show_toolbar(); }, 50); }, bigger: function () { if (w3c_slidy.size_index < w3c_slidy.sizes.length - 1) { ++w3c_slidy.size_index; } w3c_slidy.toolbar.style.display = "none"; this.body.style.fontSize = w3c_slidy.sizes[w3c_slidy.size_index]; var slide = w3c_slidy.slides[w3c_slidy.slide_number]; w3c_slidy.hide_slide(slide); w3c_slidy.show_slide(slide); setTimeout(function () { w3c_slidy.show_toolbar(); }, 50); }, // enables cross browser use of relative width/height // on object elements for use with SVG and Flash media // with thanks to Ivan Herman for the suggestion adjust_object_dimensions: function (width, height) { for ( var i = 0; i < w3c_slidy.objects.length; i++ ) { var obj = this.objects[i]; var mimeType = obj.getAttribute("type"); if (mimeType == "image/svg+xml" || mimeType == "application/x-shockwave-flash") { if ( !obj.initialWidth ) { obj.initialWidth = obj.getAttribute("width"); } if ( !obj.initialHeight ) { obj.initialHeight = obj.getAttribute("height"); } if ( obj.initialWidth && obj.initialWidth.charAt( obj.initialWidth.length-1) == "%" ) { var w = parseInt(obj.initialWidth.slice(0, obj.initialWidth.length-1)); var newW = width * (w/100.0); obj.setAttribute("width",newW); } if ( obj.initialHeight && obj.initialHeight.charAt( obj.initialHeight.length - 1) == "%" ) { var h = parseInt(obj.initialHeight.slice(0, obj.initialHeight.length-1)); var newH = height * (h/100.0); obj.setAttribute("height", newH); } } } }, // needed for Opera to inhibit default behavior // since Opera delivers keyPress even if keyDown // was cancelled key_press: function (event) { if (!event) { event = window.event; } if (!w3c_slidy.key_wanted) { return w3c_slidy.cancel(event); } return true; }, // See e.g. http://www.quirksmode.org/js/events/keys.html for keycodes key_down: function (event) { var key, target, tag; w3c_slidy.key_wanted = true; if (!event) { event = window.event; } // kludge around NS/IE differences if (window.event) { key = window.event.keyCode; target = window.event.srcElement; } else if (event.which) { key = event.which; target = event.target; } else { return true; // Yikes! unknown browser } // ignore event if key value is zero // as for alt on Opera and Konqueror if (!key) { return true; } // avoid interfering with keystroke // behavior for non-slidy chrome elements if (!w3c_slidy.slidy_chrome(target) && w3c_slidy.special_element(target)) { return true; } // check for concurrent control/command/alt key // but are these only present on mouse events? if (event.ctrlKey || event.altKey || event.metaKey) { return true; } // dismiss table of contents if visible if (w3c_slidy.is_shown_toc() && key != 9 && key != 16 && key != 38 && key != 40) { w3c_slidy.hide_table_of_contents(true); if (key == 27 || key == 84 || key == 67) { return w3c_slidy.cancel(event); } } if (key == 34) {// Page Down if (w3c_slidy.view_all) { return true; } w3c_slidy.next_slide(false); return w3c_slidy.cancel(event); } else if (key == 33) { // Page Up if (w3c_slidy.view_all) { return true; } w3c_slidy.previous_slide(false); return w3c_slidy.cancel(event); } else if (key == 32) { // space bar w3c_slidy.next_slide(true); return w3c_slidy.cancel(event); } else if (key == 37) { // Left arrow w3c_slidy.previous_slide(!event.shiftKey); return w3c_slidy.cancel(event); } else if (key == 36) { // Home w3c_slidy.first_slide(); return w3c_slidy.cancel(event); } else if (key == 35) { // End w3c_slidy.last_slide(); return w3c_slidy.cancel(event); } else if (key == 39) { // Right arrow w3c_slidy.next_slide(!event.shiftKey); return w3c_slidy.cancel(event); } else if (key == 13) {// Enter if (w3c_slidy.outline) { if (w3c_slidy.outline.visible) { w3c_slidy.fold(w3c_slidy.outline); } else { w3c_slidy.unfold(w3c_slidy.outline); } return w3c_slidy.cancel(event); } } else if (key == 188) { // < for smaller fonts w3c_slidy.smaller(); return w3c_slidy.cancel(event); } else if (key == 190) { // > for larger fonts w3c_slidy.bigger(); return w3c_slidy.cancel(event); } else if (key == 189 || key == 109) { // - for smaller fonts w3c_slidy.smaller(); return w3c_slidy.cancel(event); } else if (key == 187 || key == 191 || key == 107) { // = + for larger fonts w3c_slidy.bigger(); return w3c_slidy.cancel(event); } else if (key == 83) { // S for smaller fonts w3c_slidy.smaller(); return w3c_slidy.cancel(event); } else if (key == 66) { // B for larger fonts w3c_slidy.bigger(); return w3c_slidy.cancel(event); } else if (key == 90) { // Z for last slide w3c_slidy.last_slide(); return w3c_slidy.cancel(event); } else if (key == 70) { // F for toggle toolbar w3c_slidy.toggle_toolbar(); return w3c_slidy.cancel(event); } else if (key == 65) { // A for toggle view single/all slides w3c_slidy.toggle_view(); return w3c_slidy.cancel(event); } else if (key == 75) { // toggle action of left click for next page w3c_slidy.mouse_click_enabled = !w3c_slidy.mouse_click_enabled; var alert_msg = (w3c_slidy.mouse_click_enabled ? "enabled" : "disabled") + " mouse click advance"; alert(w3c_slidy.localize(alert_msg)); return w3c_slidy.cancel(event); } else if (key == 84 || key == 67) { // T or C for table of contents if (w3c_slidy.toc) { w3c_slidy.toggle_table_of_contents(); } return w3c_slidy.cancel(event); } else if (key == 72) {// H for help window.location = w3c_slidy.help_page; return w3c_slidy.cancel(event); } else if (key == 85 && w3c_slidy.up_link) { //U for up link window.location = w3c_slidy.up_link; return w3c_slidy.cancel(event); } return true; }, // safe for both text/html and application/xhtml+xml create_element: function (name) { if (this.xhtml && (typeof document.createElementNS != 'undefined')) { return document.createElementNS("http://www.w3.org/1999/xhtml", name); } return document.createElement(name); }, get_element_style: function (elem, IEStyleProp, CSSStyleProp) { if (elem.currentStyle) { return elem.currentStyle[IEStyleProp]; } else if (window.getComputedStyle) { var compStyle = window.getComputedStyle(elem, ""); return compStyle.getPropertyValue(CSSStyleProp); } return ""; }, // the string str is a whitespace separated list of tokens // test if str contains a particular token, e.g. "slide" has_token: function (str, token) { if (str) { // define pattern as regular expression var pattern = /\w+/g; // check for matches // place result in array var result = str.match(pattern); // now check if desired token is present for (var i = 0; i < result.length; i++) { if (result[i] == token) { return true; } } } return false; }, get_class_list: function (element) { if (typeof element.className != 'undefined') { return element.className; } return element.getAttribute("class"); }, has_class: function (element, name) { if (element.nodeType != 1) { return false; } var regexp = new RegExp("(^| )" + name + "\W*"); if (typeof element.className != 'undefined') { return regexp.test(element.className); } return regexp.test(element.getAttribute("class")); }, remove_class: function (element, name) { var regexp = new RegExp("(^| )" + name + "\W*"); var clsval = ""; if (typeof element.className != 'undefined') { clsval = element.className; if (clsval) { clsval = clsval.replace(regexp, ""); element.className = clsval; } } else { clsval = element.getAttribute("class"); if (clsval) { clsval = clsval.replace(regexp, ""); element.setAttribute("class", clsval); } } }, add_class: function (element, name) { if (!this.has_class(element, name)) { if (typeof element.className != 'undefined') { element.className += " " + name; } else { var clsval = element.getAttribute("class"); clsval = clsval ? clsval + " " + name : name; element.setAttribute("class", clsval); } } }, // HTML elements that can be used with class="incremental" // note that you can also put the class on containers like // up, ol, dl, and div to make their contents appear // incrementally. Upper case is used since this is what // browsers report for HTML node names (text/html). incremental_elements: null, okay_for_incremental: function (name) { if (!this.incremental_elements) { var inclist = new Array(); inclist["p"] = true; inclist["pre"] = true; inclist["li"] = true; inclist["blockquote"] = true; inclist["dt"] = true; inclist["dd"] = true; inclist["h2"] = true; inclist["h3"] = true; inclist["h4"] = true; inclist["h5"] = true; inclist["h6"] = true; inclist["span"] = true; inclist["address"] = true; inclist["table"] = true; inclist["tr"] = true; inclist["th"] = true; inclist["td"] = true; inclist["img"] = true; inclist["object"] = true; this.incremental_elements = inclist; } return this.incremental_elements[name.toLowerCase()]; }, next_incremental_item: function (node) { var br = this.is_xhtml ? "br" : "BR"; var slide = w3c_slidy.slides[w3c_slidy.slide_number]; for (;;) { node = w3c_slidy.next_node(slide, node); if (node == null || node.parentNode == null) { break; } if (node.nodeType == 1) { // ELEMENT if (node.nodeName == br) { continue; } if (w3c_slidy.has_class(node, "incremental") && w3c_slidy.okay_for_incremental(node.nodeName)) { return node; } if (w3c_slidy.has_class(node.parentNode, "incremental") && !w3c_slidy.has_class(node, "non-incremental")) { return node; } } } return node; }, previous_incremental_item: function (node) { var br = this.is_xhtml ? "br" : "BR"; var slide = w3c_slidy.slides[w3c_slidy.slide_number]; for (;;) { node = w3c_slidy.previous_node(slide, node); if (node == null || node.parentNode == null) { break; } if (node.nodeType == 1) { if (node.nodeName == br) { continue; } if (w3c_slidy.has_class(node, "incremental") && w3c_slidy.okay_for_incremental(node.nodeName)) { return node; } if (w3c_slidy.has_class(node.parentNode, "incremental") && !w3c_slidy.has_class(node, "non-incremental")) { return node; } } } return node; }, // set visibility for all elements on current slide with // a parent element with attribute class="incremental" set_visibility_all_incremental: function (value) { var node = this.next_incremental_item(null); if (value == "hidden") { while (node) { w3c_slidy.add_class(node, "invisible"); node = w3c_slidy.next_incremental_item(node); } } else {// value == "visible" while (node) { w3c_slidy.remove_class(node, "invisible"); node = w3c_slidy.next_incremental_item(node); } } }, // reveal the next hidden item on the slide // node is null or the node that was last revealed reveal_next_item: function (node) { node = w3c_slidy.next_incremental_item(node); if (node && node.nodeType == 1) { // an element w3c_slidy.remove_class(node, "invisible"); } return node; }, // exact inverse of revealNextItem(node) hide_previous_item: function (node) { if (node && node.nodeType == 1) { // an element w3c_slidy.add_class(node, "invisible"); } return this.previous_incremental_item(node); }, // left to right traversal of root's content next_node: function (root, node) { if (node == null) { return root.firstChild; } if (node.firstChild) { return node.firstChild; } if (node.nextSibling) { return node.nextSibling; } for (;;) { node = node.parentNode; if (!node || node == root) { break; } if (node && node.nextSibling) { return node.nextSibling; } } return null; }, // right to left traversal of root's content previous_node: function (root, node) { if (node == null) { node = root.lastChild; if (node) { while (node.lastChild) { node = node.lastChild; } } return node; } if (node.previousSibling) { node = node.previousSibling; while (node.lastChild) node = node.lastChild; return node; } if (node.parentNode != root) { return node.parentNode; } return null; }, previous_sibling_element: function (el) { el = el.previousSibling; while (el && el.nodeType != 1) { el = el.previousSibling; } return el; }, next_sibling_element: function (el) { el = el.nextSibling; while (el && el.nodeType != 1) { el = el.nextSibling; } return el; }, first_child_element: function (el) { var node; for (node = el.firstChild; node; node = node.nextSibling) { if (node.nodeType == 1) { break; } } return node; }, first_tag: function (element, tag) { var node; if (!this.is_xhtml) { tag = tag.toUpperCase(); } for (node = element.firstChild; node; node = node.nextSibling) { if (node.nodeType == 1 && node.nodeName == tag) { break; } } return node; }, hide_selection: function () { if (window.getSelection) {// Firefox, Chromium, Safari, Opera var selection = window.getSelection(); if (selection.rangeCount > 0) { var range = selection.getRangeAt(0); range.collapse (false); } } else {// Internet Explorer var textRange = document.selection.createRange (); textRange.collapse (false); } }, get_selected_text: function () { try { if (window.getSelection) { return window.getSelection().toString(); } if (document.getSelection) { return document.getSelection().toString(); } if (document.selection) { return document.selection.createRange().text; } } catch (e) { } return ""; }, // make note of length of selected text // as this evaluates to zero in click event mouse_button_up: function (e) { w3c_slidy.selected_text_len = w3c_slidy.get_selected_text().length; }, mouse_button_down: function (e) { w3c_slidy.selected_text_len = w3c_slidy.get_selected_text().length; w3c_slidy.mouse_x = e.clientX; w3c_slidy.mouse_y = e.clientY; }, // right mouse button click is reserved for context menus // it is more reliable to detect rightclick than leftclick mouse_button_click: function (e) { if (!e) { var e = window.event; } if (Math.abs(e.clientX -w3c_slidy.mouse_x) + Math.abs(e.clientY -w3c_slidy.mouse_y) > 10) { return true; } if (w3c_slidy.selected_text_len > 0) { return true; } var rightclick = false; var leftclick = false; var middleclick = false; var target; if (!e) { var e = window.event; } if (e.target) { target = e.target; } else if (e.srcElement) { target = e.srcElement; } // work around Safari bug if (target.nodeType == 3) { target = target.parentNode; } if (e.which) { // all browsers except IE leftclick = (e.which == 1); middleclick = (e.which == 2); rightclick = (e.which == 3); } else if (e.button) { // Konqueror gives 1 for left, 4 for middle // IE6 gives 0 for left and not 1 as I expected if (e.button == 4) middleclick = true; // all browsers agree on 2 for right button rightclick = (e.button == 2); } else { leftclick = true; } if (w3c_slidy.selected_text_len > 0) { w3c_slidy.stop_propagation(e); e.cancel = true; e.returnValue = false; return false; } // dismiss table of contents w3c_slidy.hide_table_of_contents(false); // check if target is something that probably want's clicks // e.g. a, embed, object, input, textarea, select, option var tag = target.nodeName.toLowerCase(); if (w3c_slidy.mouse_click_enabled && leftclick && !w3c_slidy.special_element(target) && !target.onclick) { w3c_slidy.next_slide(true); w3c_slidy.stop_propagation(e); e.cancel = true; e.returnValue = false; return false; } return true; }, special_element: function (element) { if (this.has_class(element, "non-interactive")) { return false; } var tag = element.nodeName.toLowerCase(); return element.onkeydown || element.onclick || tag == "a" || tag == "embed" || tag == "object" || tag == "video" || tag == "audio" || tag == "svg" || tag == "canvas" || tag == "input" || tag == "textarea" || tag == "select" || tag == "option"; }, slidy_chrome: function (el) { while (el) { if (el == w3c_slidy.toc || el == w3c_slidy.toolbar || w3c_slidy.has_class(el, "outline")) { return true; } el = el.parentNode; } return false; }, get_key: function (e) { var key; // kludge around NS/IE differences if (typeof window.event != "undefined") { key = window.event.keyCode; } else if (e.which) { key = e.which; } return key; }, get_target: function (e) { var target; if (!e) { e = window.event; } if (e.target) { target = e.target; } else if (e.srcElement) { target = e.srcElement; } if (target.nodeType != 1) { target = target.parentNode; } return target; }, // does display property provide correct defaults? is_block: function (elem) { var tag = elem.nodeName.toLowerCase(); return tag == "ol" || tag == "ul" || tag == "p" || tag == "dl" || tag == "li" || tag == "table" || tag == "pre" || tag == "h1" || tag == "h2" || tag == "h3" || tag == "h4" || tag == "h5" || tag == "h6" || tag == "blockquote" || tag == "address"; }, add_listener: function (element, event, handler) { if (window.addEventListener) { element.addEventListener(event, handler, false); } else { element.attachEvent("on" + event, handler); } }, // used to prevent event propagation from field controls stop_propagation: function (event) { event = event ? event : window.event; event.cancelBubble = true; // for IE if (event.stopPropagation) { event.stopPropagation(); } return true; }, cancel: function (event) { if (event) { event.cancel = true; event.returnValue = false; if (event.preventDefault) { event.preventDefault(); } } w3c_slidy.key_wanted = false; return false; }, // for each language define an associative array // and also the help text which is longer strings_es: { "slide":"pág.", "help?":"Ayuda", "contents?":"Índice", "table of contents":"tabla de contenidos", "Table of Contents":"Tabla de Contenidos", "restart presentation":"Reiniciar presentación", "restart?":"Inicio" }, help_es: "Utilice el ratón, barra espaciadora, teclas Izda/Dcha, " + "o Re pág y Av pág. Use S y B para cambiar el tamaño de fuente.", strings_ca: { "slide":"pàg..", "help?":"Ajuda", "contents?":"Índex", "table of contents":"taula de continguts", "Table of Contents":"Taula de Continguts", "restart presentation":"Reiniciar presentació", "restart?":"Inici" }, help_ca: "Utilitzi el ratolí, barra espaiadora, tecles Esq./Dta. " + "o Re pàg y Av pàg. Usi S i B per canviar grandària de font.", strings_cs: { "slide":"snímek", "help?":"nápověda", "contents?":"obsah", "table of contents":"obsah prezentace", "Table of Contents":"Obsah prezentace", "restart presentation":"znovu spustit prezentaci", "restart?":"restart" }, help_cs: "Prezentaci můžete procházet pomocí kliknutí myši, mezerníku, " + "šipek vlevo a vpravo nebo kláves PageUp a PageDown. Písmo se " + "dá zvětšit a zmenšit pomocí kláves B a S.", strings_nl: { "slide":"pagina", "help?":"Help?", "contents?":"Inhoud?", "table of contents":"inhoudsopgave", "Table of Contents":"Inhoudsopgave", "restart presentation":"herstart presentatie", "restart?":"Herstart?" }, help_nl: "Navigeer d.m.v. het muis, spatiebar, Links/Rechts toetsen, " + "of PgUp en PgDn. Gebruik S en B om de karaktergrootte te veranderen.", strings_de: { "slide":"Seite", "help?":"Hilfe", "contents?":"Übersicht", "table of contents":"Inhaltsverzeichnis", "Table of Contents":"Inhaltsverzeichnis", "restart presentation":"Präsentation neu starten", "restart?":"Neustart" }, help_de: "Benutzen Sie die Maus, Leerschlag, die Cursortasten links/rechts " + "oder Page up/Page Down zum Wechseln der Seiten und S und B für die " + "Schriftgrösse.", strings_pl: { "slide":"slajd", "help?":"pomoc?", "contents?":"spis treści?", "table of contents":"spis treści", "Table of Contents":"Spis Treści", "restart presentation":"Restartuj prezentację", "restart?":"restart?" }, help_pl: "Zmieniaj slajdy klikając myszą, naciskając spację, strzałki " + "lewo/prawo lub PgUp / PgDn. Użyj klawiszy S i B, aby zmienić " + "rozmiar czczionki.", strings_fr: { "slide":"page", "help?":"Aide", "contents?":"Index", "table of contents":"table des matières", "Table of Contents":"Table des matières", "restart presentation":"Recommencer l'exposé", "restart?":"Début" }, help_fr: "Naviguez avec la souris, la barre d'espace, les flèches " + "gauche/droite ou les touches Pg Up, Pg Dn. Utilisez " + "les touches S et B pour modifier la taille de la police.", strings_hu: { "slide":"oldal", "help?":"segítség", "contents?":"tartalom", "table of contents":"tartalomjegyzék", "Table of Contents":"Tartalomjegyzék", "restart presentation":"bemutató újraindítása", "restart?":"újraindítás" }, help_hu: "Az oldalak közti lépkedéshez kattintson az egérrel, vagy " + "használja a szóköz, a bal, vagy a jobb nyíl, illetve a Page Down, " + "Page Up billentyűket. Az S és a B billentyűkkel változtathatja " + "a szöveg méretét.", strings_it: { "slide":"pag.", "help?":"Aiuto", "contents?":"Indice", "table of contents":"indice", "Table of Contents":"Indice", "restart presentation":"Ricominciare la presentazione", "restart?":"Inizio" }, help_it: "Navigare con mouse, barra spazio, frecce sinistra/destra o " + "PgUp e PgDn. Usare S e B per cambiare la dimensione dei caratteri.", strings_el: { "slide":"σελίδα", "help?":"βοήθεια;", "contents?":"περιεχόμενα;", "table of contents":"πίνακας περιεχομένων", "Table of Contents":"Πίνακας Περιεχομένων", "restart presentation":"επανεκκίνηση παρουσίασης", "restart?":"επανεκκίνηση;" }, help_el: "Πλοηγηθείτε με το κλίκ του ποντικιού, το space, τα βέλη " + "αριστερά/δεξιά, ή Page Up και Page Down. Χρησιμοποιήστε τα" + " πλήκτρα S και B για να αλλάξετε το μέγεθος της γραμματοσειράς.", strings_ja: { "slide":"スライド", "help?":"ヘルプ", "contents?":"目次", "table of contents":"目次を表示", "Table of Contents":"目次", "restart presentation":"最初から再生", "restart?":"最初から" }, help_ja: "マウス左クリック ・ スペース ・ 左右キー " + "または Page Up ・ Page Downで操作, S ・ Bでフォントサイズ変更", strings_zh: { "slide":"幻灯片", "help?":"帮助?", "contents?":"内容?", "table of contents":"目录", "Table of Contents":"目录", "restart presentation":"重新启动展示", "restart?":"重新启动?" }, help_zh: "用鼠标点击, 空格条, 左右箭头, Pg Up 和 Pg Dn 导航. " + "用 S, B 改变字体大小.", strings_ru: { "slide":"слайд", "help?":"помощь?", "contents?":"содержание?", "table of contents":"оглавление", "Table of Contents":"Оглавление", "restart presentation":"перезапустить презентацию", "restart?":"перезапуск?" }, help_ru: "Перемещайтесь кликая мышкой, используя клавишу пробел, стрелки" + "влево/вправо или Pg Up и Pg Dn. Клавиши S и B меняют размер шрифта.", strings_sv: { "slide":"sida", "help?":"hjälp", "contents?":"innehåll", "table of contents":"innehållsförteckning", "Table of Contents":"Innehållsförteckning", "restart presentation":"visa presentationen från början", "restart?":"börja om" }, help_sv: "Bläddra med ett klick med vänstra musknappen, mellanslagstangenten, " + "vänster- och högerpiltangenterna eller tangenterna Pg Up, Pg Dn. " + "Använd tangenterna S och B för att ändra textens storlek.", strings: { }, localize: function (src) { if (src == "") { return src; } // try full language code, e.g. en-US var s, lookup = w3c_slidy.strings[w3c_slidy.lang]; if (lookup) { s = lookup[src]; if (s) { return s; } } // strip country code suffix, e.g. // try en if undefined for en-US var lg = w3c_slidy.lang.split("-"); if (lg.length > 1) { lookup = w3c_slidy.strings[lg[0]]; if (lookup) { s = lookup[src]; if (s) { return s; } } } // otherwise string as is return src; }, init_localization: function () { var i18n = w3c_slidy; var help_text = w3c_slidy.help_text; // each such language array is declared in the localize array // this is used as in w3c_slidy.localize("foo"); this.strings = { "es":this.strings_es, "ca":this.strings_ca, "cs":this.strings_cs, "nl":this.strings_nl, "de":this.strings_de, "pl":this.strings_pl, "fr":this.strings_fr, "hu":this.strings_hu, "it":this.strings_it, "el":this.strings_el, "jp":this.strings_ja, "zh":this.strings_zh, "ru":this.strings_ru, "sv":this.strings_sv }, i18n.strings_es[help_text] = i18n.help_es; i18n.strings_ca[help_text] = i18n.help_ca; i18n.strings_cs[help_text] = i18n.help_cs; i18n.strings_nl[help_text] = i18n.help_nl; i18n.strings_de[help_text] = i18n.help_de; i18n.strings_pl[help_text] = i18n.help_pl; i18n.strings_fr[help_text] = i18n.help_fr; i18n.strings_hu[help_text] = i18n.help_hu; i18n.strings_it[help_text] = i18n.help_it; i18n.strings_el[help_text] = i18n.help_el; i18n.strings_ja[help_text] = i18n.help_ja; i18n.strings_zh[help_text] = i18n.help_zh; i18n.strings_ru[help_text] = i18n.help_ru; i18n.strings_sv[help_text] = i18n.help_sv; w3c_slidy.lang = document.body.parentNode.getAttribute("lang"); if (!w3c_slidy.lang) { w3c_slidy.lang = document.body.parentNode.getAttribute("xml:lang"); } if (!w3c_slidy.lang) { w3c_slidy.lang = "en"; } } }; // attach event listeners for initialization w3c_slidy.set_up(); // hide the slides as soon as body element is available // to reduce annoying screen mess before the onload event setTimeout(w3c_slidy.hide_slides, 50);