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WebSite.js
File metadata and controls
1083 lines (791 loc) · 32.1 KB
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if(!javaxt) var javaxt={};
if(!javaxt.express) javaxt.express={};
//******************************************************************************
//** WebSite
//******************************************************************************
/**
* Used to wrap the content in a carousel control.
*
******************************************************************************/
javaxt.express.WebSite = function (content, config) {
this.className = "javaxt.express.WebSite";
var me = this;
var tabs;
var carousel;
var currPage, nextPage;
var slideIndex;
var defaultConfig = {
tabs: [],
navbar: null,
sidebar: null,
/** Minimul height of a panel
*/
minContentHeight: 600,
/** Padding between panels in the carousel. This should not exceed the
* content padding defined in the CSS.
*/
padding: 20,
/** Time to transition between panels, in milliseconds. Only applicable
* when "animate" is set to true.
*/
animationSteps: 600,
/** An instance of a javaxt.dhtml.Effects class used to animate
* transitions. Only used when "animate" is set to true.
*/
fx: null,
style: {
panel : { //Style for individual panels in the carousel
background: "#fff",
height: ""
}
}
};
var pageLoader = new javaxt.dhtml.PageLoader();
var scrollUp = false;
var timer;
var debug = false;
//**************************************************************************
//** Constructor
//**************************************************************************
var init = function(){
//Clone the config so we don't modify the original config object
var clone = {};
merge(clone, config);
//Merge clone with default config
merge(clone, defaultConfig);
config = clone;
if (!config.fx) config.fx = new javaxt.dhtml.Effects();
//Parse tabs
tabs = config.tabs;
var arr = [];
for (var i=0; i<tabs.length; i++){
var path = getPath(tabs[i].pathname);
var dir = getDir(path);
var div = tabs[i].getElementsByTagName("div")[0];
arr.push({
dir: dir,
div: div
});
}
tabs = arr;
//Update nav components
var path = getPath(window.location.pathname);
me.updateTabs(path);
me.updateNav(path);
me.updateSidebar(path);
//Update hyperlinks
var links = document.getElementsByTagName("a");
me.updateLinks(links);
//Highlight code blocks. Do this before computing the content height.
if (typeof CodeMirror !== 'undefined'){
highlight(content);
}
else if (typeof SyntaxHighlighter !== 'undefined'){
SyntaxHighlighter.defaults['class-name'] = 'code-block';
SyntaxHighlighter.defaults['toolbar'] = false;
SyntaxHighlighter.defaults['gutter'] = false;
highlight(content);
}
//Explicitly set the content height. Do this before removing
//elements or inserting the carousel control.
var contentHeight = content.offsetHeight;
var minContentHeight = parseFloat(config.minContentHeight);
if (!isNaN(minContentHeight)){
contentHeight = Math.max(contentHeight, minContentHeight);
}
content.style.height = contentHeight + "px";
//Create panel for the carousel using elements elements from the content node
currPage = document.createElement("div");
currPage.style.height = "100%";
var contentWrapper = document.createElement("div");
setStyle(contentWrapper, config.style.panel);
currPage.appendChild(contentWrapper);
while (content.childNodes.length>0){
var node = content.childNodes[0];
content.removeChild(node);
contentWrapper.appendChild(node);
}
//Create a second empty panel for the carousel
nextPage = document.createElement("div");
nextPage.style.height = "100%";
//Insert carousel
carousel = new javaxt.dhtml.Carousel(content, {
items: [currPage, nextPage],
drag: false,
loop: true,
padding: config.padding,
animationSteps: config.animationSteps,
transitionEffect: "easeInOutCubic",
fx: config.fx,
onRender: function(){
//console.log("ready!");
}
});
//Watch for changes to the carousel
{
carousel.beforeChange = function(currPanel, nextPanel){
//Hide content
currPanel.style.opacity = 0;
nextPanel.style.opacity = 0;
if (timer) clearInterval(timer);
//Update content of the nextPanel. This should be done in the load
//function but there are issues getting the correct DOM element.
//I think it has something to do with the cloning process. In any
//event, this event listener provides a workaround.
updateContent(nextPanel);
//Update nav components
var path = getPath(window.location.pathname);
me.updateTabs(path);
me.updateNav(path);
me.updateSidebar(path);
//console.log(getScrollPosition());
dispatchEvent('beforeunload');
};
carousel.onChange = function(currPanel, prevPanel){
//Update class variables
currPage = currPanel;
nextPage = prevPanel;
//Update opacity
if (config.fx){
config.fx.fadeIn(currPanel, 'easeInCubic', 300);
}
else{
currPanel.style.opacity = 1;
}
var resizeSteps = 0;
if (config.animationSteps>0) resizeSteps = 100;
//Scroll up after the carousel changes as needed
if (scrollUp){
scrollUp = false;
if (getScrollPosition()>50 && resizeSteps>0){
var animationSteps = 1000;
scrollTop(new Date().getTime(), animationSteps, animationSteps, function(){
resize(currPanel, resizeSteps);
});
}
else{
setScrollPosition(0);
}
}
//Create timer to update content height
timer = setInterval(function(){
resize(currPanel, resizeSteps);
}, 250);
//Remove content from previous panel. Content will be loaded
//dynamically on 'popstate' events
prevPanel.innerHTML = "";
//Trigger window.onload event
dispatchEvent('load');
};
carousel.onResize = function(){
dispatchEvent('resize');
};
}
//Resize height of the content panel whenever the window is resized
window.addEventListener('resize', function(e) {
resize(currPage);
// var panels = carousel.getPanels();
// for (var i=0; i<panels.length; i++){
// if (panels[i].isVisible){
// resize(panels[i].div);
// return;
// }
// }
});
//Call the resize listener to update the height of the content div.
//This is important for IE and Chrome.
dispatchEvent('resize');
//Watch for forward and back events via a 'popstate' listener
window.addEventListener('popstate', popstateListener);
//Set initial history. This is critical for the popstate listener
log(window.history.state);
if (window.history.state==null){
slideIndex = 0;
var panelInfo = {
index: slideIndex,
title: document.title
};
history.replaceState(panelInfo, null, '');
}
else{
slideIndex = window.history.state.index;
}
log("slideIndex: " + slideIndex);
};
//**************************************************************************
//** popstateListener
//**************************************************************************
/** Used to processes forward and back events from the browser
*/
var popstateListener = function(e) {
var panel = e.state;
log(panel);
document.title = panel.title;
// //Find panel
// var nextPage;
// var panels = carousel.getPanels();
// for (var i=0; i<panels.length; i++){
// if (!panels[i].isVisible){
// nextPage = panels[i].div;
// break;
// }
// }
if (!nextPage){
console.error("nextPage is null in popstateListener");
return;
}
var url = window.location;
getHTML(url, function(html, title, inlineScripts){
nextPage.innerHTML = html;
loadInlineScripts(inlineScripts);
if (slideIndex>=panel.index){
carousel.back();
slideIndex = panel.index;
}
else if (slideIndex<panel.index){
carousel.next();
slideIndex = panel.index;
}
else{
log(slideIndex + " vs " + panel.index);
}
});
};
//**************************************************************************
//** enablePopstateListener
//**************************************************************************
this.enablePopstateListener = function(){
me.disablePopstateListener(); //Just in case...
window.addEventListener('popstate', popstateListener);
};
//**************************************************************************
//** disablePopstateListener
//**************************************************************************
this.disablePopstateListener = function(){
window.removeEventListener('popstate', popstateListener);
};
//**************************************************************************
//** beforeResize
//**************************************************************************
this.beforeResize = function(){};
//**************************************************************************
//** onResize
//**************************************************************************
this.onResize = function(){};
//**************************************************************************
//** resize
//**************************************************************************
/** Used to update the content height whenever the carousel changes.
*/
var resize = function(panel, animationSteps){
var r1 = _getRect(panel.parentNode);
var firstChild = getFirstChild(panel);
if (firstChild) panel = firstChild;
var r2 = _getRect(panel);
var h = r2.height + (r2.top-r1.top);
var contentHeight = parseFloat(content.style.height);
var minContentHeight = parseFloat(config.minContentHeight);
if (!isNaN(minContentHeight)){
h = Math.max(h, minContentHeight);
}
if (h===contentHeight){
return;
}
else{
me.beforeResize();
if (!animationSteps) animationSteps = 0;
if (animationSteps>0){
_resize(contentHeight, h, new Date().getTime(), animationSteps, me.onResize);
}
else{
content.style.height = h + "px";
me.onResize();
}
}
};
var _resize = function(start, end, lastTick, timeLeft, animationSteps, callback){
var curTick = new Date().getTime();
var elapsedTicks = curTick - lastTick;
//If the animation is complete, ensure that the content is target height
if (timeLeft <= elapsedTicks){
content.style.height = end+"px";
if (callback) callback.apply(me, []);
return;
}
timeLeft -= elapsedTicks;
var d = start-end;
var percentComplete = 1-(timeLeft/animationSteps);
var offset = Math.round(percentComplete * d);
content.style.height = start-offset + "px";
setTimeout(function(){
_resize(start, end, curTick, timeLeft, animationSteps, callback);
}, 33);
};
//**************************************************************************
//** scrollTop
//**************************************************************************
/** Animated scroll to the top of the page.
*/
var scrollTop = function(lastTick, timeLeft, animationSteps, callback){
var curTick = new Date().getTime();
var elapsedTicks = curTick - lastTick;
//If the animation is complete, ensure that the content is target height
if (timeLeft <= elapsedTicks){
setScrollPosition(0);
if (callback) callback.apply(me, []);
return;
}
timeLeft -= elapsedTicks;
var start = getScrollPosition();
var d = start;
var percentComplete = 1-(timeLeft/animationSteps);
var offset = Math.round(percentComplete * d);
setScrollPosition(start-offset);
setTimeout(function(){
scrollTop(curTick, timeLeft, animationSteps, callback);
}, 33);
};
//**************************************************************************
//** getScrollPosition
//**************************************************************************
var getScrollPosition = function(){
return window.scrollY; //vs return body.scrollTop;
};
//**************************************************************************
//** setScrollPosition
//**************************************************************************
/** body.scrollTop has been deprecated */
var setScrollPosition = function(y){
window.scrollTo(0, y); //vs body.scrollTop = y;
};
//**************************************************************************
//** setContentHeight
//**************************************************************************
this.setContentHeight = function(h){
content.style.height = h;
};
//**************************************************************************
//** highlight
//**************************************************************************
/** Used to update SyntaxHighlighter
*/
var highlight = function(el){
//Get <pre> nodes that are not inside a <pre> node
var nodes = [];
var pres = el.getElementsByTagName("pre");
for (var i=0; i<pres.length; i++){
var pre = pres[i];
var addNode = true;
var parentNode = pre.parentNode;
while (parentNode!=null){
if (parentNode.nodeName.toLowerCase() === "pre"){
addNode = false;
break;
}
parentNode = parentNode.parentNode;
}
if (addNode) nodes.push(pre);
}
if (typeof CodeMirror !== 'undefined'){
for (var i=0; i<nodes.length; i++){
var pre = nodes[i];
var src = pre.innerText.replace(/\s+$/, '');
var lang = pre.getAttribute("language");
if (!lang && pre.className) {
var idx = pre.className.indexOf("brush:");
if (idx>-1){
lang = pre.className.substring(idx+"brush:".length);
idx = lang.indexOf(";");
if (idx>-1){
lang = lang.substring(0, idx);
}
lang = lang.replace(/^\s*/, "").replace(/\s*$/, "");
}
}
if (!lang) lang = "java"; //"javascript"
if (lang=="js") lang = "javascript";
if (lang=="java") lang = "text/x-java";
var lineNumbers = pre.getAttribute("lineNumbers");
if (lineNumbers==="true") lineNumbers = true;
else lineNumbers = false;
var numLines = src.split("\n").length;
var initCodeMirror = function(pre, src, lang, lineNumbers, callback){
var cm = CodeMirror(pre, {
mode: lang,
lineNumbers: lineNumbers,
readOnly: true,
value: src
});
cm.setSize("100%", "100%");
if (callback) callback.apply(this, [pre, cm]);
};
if (numLines<250){
pre.innerHTML = "";
initCodeMirror(pre, src, lang, lineNumbers);
}
else{
var h = parseFloat(pre.offsetHeight);
var lineHeight = h/numLines;
h += lineHeight;
pre.style.opacity = 0;
pre.innerHTML = "";
pre.style.height = h +"px";
setTimeout(initCodeMirror, 200, pre, src, lang, lineNumbers, function(pre){
config.fx.fadeIn(pre, 'easeInCubic', 300);
});
}
}
}
else if (typeof SyntaxHighlighter !== 'undefined'){
var highlight = false;
for (var i=0; i<nodes.length; i++){
var pre = nodes[i];
if (pre.className==""){ pre.className = "brush: java;"; }
highlight = true;
}
if (highlight) SyntaxHighlighter.highlight();
}
};
//**************************************************************************
//** updateLinks
//**************************************************************************
this.updateLinks = function(links){
for (var i=0; i<links.length; i++){
//Add event listener if the link refers to a resource on this site
if (links[i].hostname==window.location.hostname){
var onclick = function(e){
//Ignore the link if the url matches the current url
var url = this.href;
if (window.location==url){
e.preventDefault();
return;
}
//Ignore the link if it contains a hash/anchor
var tmp = url.substring(url.indexOf(this.pathname) + this.pathname.length);
if (tmp.indexOf("#")==0){
e.preventDefault();
return;
}
//Parse path
var path = getPath(this.pathname);
var dir = getDir(path);
//Update the link
if (me.updateLink(url, path, dir)){
//Prevent
e.preventDefault();
//Load
getHTML(url, function(html, title, inlineScripts){
load(html, title, url, dir, inlineScripts);
});
}
};
//links[i].ontouchstart = onclick;
links[i].onclick = onclick;
}
}
};
//**************************************************************************
//** load
//**************************************************************************
var load = function(html, title, url, dir, inlineScripts){
//Get current path and tab variables. Do this before updating the URL.
var tab = me.getTab(dir);
if (!tab) return;
var currPath = getPath(window.location.pathname);
var currDir = getDir(currPath);
var currTab = me.getTab(currDir);
// //Find panels in the carousel
// var currPage, nextPage;
// var panels = carousel.getPanels();
// for (var i=0; i<panels.length; i++){
// var panel = panels[i];
// var el = panel.div;
// if (panel.isVisible){
// currPage = el;
// }
// else{
// nextPage = el;
// }
// }
if (!nextPage){
console.error("nextPage is null in load");
return;
}
if (!currPage){
console.error("currPage is null in load");
return;
}
//Update title
document.title = title;
//Update URL
history.pushState(null, title, url);
//Update scroll variable
scrollUp = true;
//
var slide = tab.dir!=currTab.dir;
slide = true;
//Update content
if (!slide){
currPage.innerHTML = html;
updateContent(currPage);
}
else{
nextPage.innerHTML = html;
//updateContent(currPage); <-- See carousel.onChange event listener
//Determine which direction to slide the carousel
var a, b;
for (var i=0; i<tabs.length; i++){
var path = tabs[i].dir;
if (path==currTab.dir) a = i;
if (path==tab.dir) b = i;
}
log(a + " " + b);
if (a==b){
var path = getPath(window.location.pathname);
if (path.indexOf(currPath)==0){
b=1;
a=0;
}
else{
log(currPath + " vs " + path);
}
}
//Slide carousel to view content
if (b>a){
slideIndex++;
carousel.next();
}
else{
slideIndex--;
carousel.back();
}
}
//Execute inline scripts
loadInlineScripts(inlineScripts);
//Update browser history
var panelInfo = {
index: slideIndex,
title: title
};
history.replaceState(panelInfo, title, url);
};
//**************************************************************************
//** loadInlineScripts
//**************************************************************************
var loadInlineScripts = function(inlineScripts){
//Execute inline scripts
for (var i=0; i<inlineScripts.length; i++){
var script = inlineScripts[i].firstChild.nodeValue;
eval(script);
}
};
//**************************************************************************
//** dispatchEvent
//**************************************************************************
/** Fires a given window event (e.g. "load")
*/
var dispatchEvent = function(name){
var evt;
try{
evt = new Event(name);
}
catch(e){ //e.g. IE
evt = document.createEvent('Event');
evt.initEvent(name, false, false);
}
if (config.animationSteps>0){
window.dispatchEvent(evt);
}
else{
//Found a bug where the documentation tab wouldn't load correctly
//if the animation was disabled. I wasn't able to track down the
//root cause but adding a slight delay seems to do the trick
setTimeout(function(){
window.dispatchEvent(evt);
},50);
}
};
//**************************************************************************
//** getTabs
//**************************************************************************
/** Public method allows users to access the tabs variable. Used in
* conjuntion with the getTab() method.
*/
me.getTabs = function(){
return tabs;
};
//**************************************************************************
//** getTab
//**************************************************************************
/** Returns a tab for a given directory.
*/
me.getTab = function(dir){
for (var i=0; i<tabs.length; i++){
if (tabs[i].dir==dir) return tabs[i];
}
return null;
};
//**************************************************************************
//** updateLink
//**************************************************************************
/** This method is called while parsing links in an HTML document. Returns
* true if the given URL should be loaded dynamically as content (default).
* Otherwise the link will be left as is.
*/
this.updateLink = function(url, path, dir){
if (dir=="downloads" || dir=="images"){
var idx = path.lastIndexOf(".");
if ((path.length-idx)<5){
return false;
}
}
return true;
};
//**************************************************************************
//** updateTabs
//**************************************************************************
this.updateTabs = function(path){
if (!path) path = getPath(window.location.pathname);
var currDir = getDir(path);
var currTab = me.getTab(currDir);
for (var i=0; i<tabs.length; i++){
tabs[i].div.className = "";
}
if (currTab) currTab.div.className = "active";
};
//**************************************************************************
//** updateNav
//**************************************************************************
/** Used to update the navbar (aka breadcrumbs)
*/
this.updateNav = function(path){
if (!config.navbar) return;
config.navbar.innerHTML = "";
if (!path) path = getPath(window.location.pathname);
if (path.lastIndexOf("/")===path.length-1) path = path.substring(0, path.length-1);
var arr = path.split("/");
if (arr.length===0 || arr[0]==='') config.navbar.style.height = "0px";
else config.navbar.style.height = "";
for (var i=0; i<arr.length; i++){
var div = document.createElement("div");
div.innerText = arr[i].split("_").join(" ");
if (i<arr.length-1){
div.path = arr.slice(0, i+1).join("/");
div.onclick = function(e){
var path = this.path;
var url = window.location.hostname + path;
var dir = getDir(path);
var url = window.location.origin;
if (!url){
url = window.location.protocol;
if (url.indexOf(":")===-1) url += ":";
var host = window.location.host;
url += "//" + host;
var port = parseInt(window.location.port);
if (!isNaN(port)){
if (host.indexOf(":")===-1) url += ":" +port;
}
}
url += "/" + path;
//Update the link
if (me.updateLink(url, path, dir)){
//Prevent
e.preventDefault();
//Load
getHTML(url, function(html, title, inlineScripts){
load(html, title, url, dir, inlineScripts);
});
}
};
}
config.navbar.appendChild(div);
}
};
//**************************************************************************
//** updateSidebar
//**************************************************************************
this.updateSidebar = function(path){};
//**************************************************************************
//** updateContent
//**************************************************************************
var updateContent = function(el){
//Update pre/code blocks
highlight(el);
//Update links
var links = el.getElementsByTagName("a");
me.updateLinks(links);
};
//**************************************************************************
//** getPath
//**************************************************************************
/** Updates a given path by removing the leading "/" character.
*/
var getPath = function(path){
if (path==null) path = "";
else if (path.indexOf("/")==0){
if (path.length>1) path = path.substring(1);
else path = "";