/*
Copyright (c) 2007, iUI Project Members
See LICENSE.txt for licensing terms
*/
(function() {
var slideSpeed = 20;
var slideInterval = 0;
var currentPage = null;
var currentDialog = null;
var currentWidth = 0;
var currentHash = location.hash;
var hashPrefix = "#_";
var pageHistory = [];
var newPageCount = 0;
var checkTimer;
// *************************************************************************************************
window.iui =
{
showPage: function(page, backwards)
{
if (page)
{
if (currentDialog)
{
currentDialog.removeAttribute("selected");
currentDialog = null;
}
if (hasClass(page, "dialog"))
showDialog(page);
else
{
var fromPage = currentPage;
currentPage = page;
if (fromPage)
setTimeout(slidePages, 0, fromPage, page, backwards);
else
updatePage(page, fromPage);
}
}
},
showPageById: function(pageId)
{
var page = $(pageId);
if (page)
{
var index = pageHistory.indexOf(pageId);
var backwards = index != -1;
if (backwards)
pageHistory.splice(index, pageHistory.length);
iui.showPage(page, backwards);
}
},
showPageByHref: function(href, args, method, replace, cb)
{
var req = new XMLHttpRequest();
req.onerror = function()
{
if (cb)
cb(false);
};
req.onreadystatechange = function()
{
if (req.readyState == 4)
{
if (replace)
replaceElementWithSource(replace, req.responseText);
else
{
var frag = document.createElement("div");
frag.innerHTML = req.responseText;
iui.insertPages(frag.childNodes);
}
if (cb)
setTimeout(cb, 1000, true);
}
};
if (args)
{
req.open(method || "GET", href, true);
req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
req.setRequestHeader("Content-Length", args.length);
req.send(args.join("&"));
}
else
{
req.open(method || "GET", href, true);
req.send(null);
}
},
insertPages: function(nodes)
{
var targetPage;
for (var i = 0; i < nodes.length; ++i)
{
var child = nodes[i];
if (child.nodeType == 1)
{
if (!child.id)
child.id = "__" + (++newPageCount) + "__";
var clone = $(child.id);
if (clone)
clone.parentNode.replaceChild(child, clone);
else
document.body.appendChild(child);
if (child.getAttribute("selected") == "true" || !targetPage)
targetPage = child;
--i;
}
}
if (targetPage)
iui.showPage(targetPage);
},
getSelectedPage: function()
{
for (var child = document.body.firstChild; child; child = child.nextSibling)
{
if (child.nodeType == 1 && child.getAttribute("selected") == "true")
return child;
}
}
};
// *************************************************************************************************
addEventListener("load", function(event)
{
var page = iui.getSelectedPage();
if (page)
iui.showPage(page);
setTimeout(preloadImages, 0);
setTimeout(checkOrientAndLocation, 0);
checkTimer = setInterval(checkOrientAndLocation, 300);
}, false);
addEventListener("click", function(event)
{
var link = findParent(event.target, "a");
if (link)
{
function unselect() { link.removeAttribute("selected"); }
if (link.href && link.hash && link.hash != "#")
{
link.setAttribute("selected", "true");
iui.showPage($(link.hash.substr(1)));
setTimeout(unselect, 500);
}
else if (link == $("backButton"))
history.back();
else if (link.getAttribute("type") == "submit")
submitForm(findParent(link, "form"));
else if (link.getAttribute("type") == "cancel")
cancelDialog(findParent(link, "form"));
else if (link.target == "_replace")
{
link.setAttribute("selected", "progress");
iui.showPageByHref(link.href, null, null, link, unselect);
}
else if (!link.target)
{
link.setAttribute("selected", "progress");
iui.showPageByHref(link.href, null, null, null, unselect);
}
else
return;
event.preventDefault();
}
}, true);
addEventListener("click", function(event)
{
var div = findParent(event.target, "div");
if (div && hasClass(div, "toggle"))
{
div.setAttribute("toggled", div.getAttribute("toggled") != "true");
event.preventDefault();
}
}, true);
function checkOrientAndLocation()
{
if (window.innerWidth != currentWidth)
{
currentWidth = window.innerWidth;
var orient = currentWidth == 320 ? "profile" : "landscape";
document.body.setAttribute("orient", orient);
setTimeout(scrollTo, 100, 0, 1);
}
if (location.hash != currentHash)
{
var pageId = location.hash.substr(hashPrefix.length)
iui.showPageById(pageId);
}
}
function showDialog(page)
{
currentDialog = page;
page.setAttribute("selected", "true");
if (hasClass(page, "dialog") && !page.target)
showForm(page);
}
function showForm(form)
{
form.onsubmit = function(event)
{
event.preventDefault();
submitForm(form);
};
form.onclick = function(event)
{
if (event.target == form && hasClass(form, "dialog"))
cancelDialog(form);
};
}
function cancelDialog(form)
{
form.removeAttribute("selected");
}
function updatePage(page, fromPage)
{
if (!page.id)
page.id = "__" + (++newPageCount) + "__";
location.href = currentHash = hashPrefix + page.id;
pageHistory.push(page.id);
var pageTitle = $("pageTitle");
if (page.title)
pageTitle.innerHTML = page.title;
if (page.localName.toLowerCase() == "form" && !page.target)
showForm(page);
var backButton = $("backButton");
if (backButton)
{
var prevPage = $(pageHistory[pageHistory.length-2]);
if (prevPage && !page.getAttribute("hideBackButton"))
{
backButton.style.display = "inline";
backButton.innerHTML = prevPage.title ? prevPage.title : "Back";
}
else
backButton.style.display = "none";
}
}
function slidePages(fromPage, toPage, backwards)
{
var axis = (backwards ? fromPage : toPage).getAttribute("axis");
if (axis == "y")
(backwards ? fromPage : toPage).style.top = "100%";
else
toPage.style.left = "100%";
toPage.setAttribute("selected", "true");
scrollTo(0, 1);
clearInterval(checkTimer);
var percent = 100;
slide();
var timer = setInterval(slide, slideInterval);
function slide()
{
percent -= slideSpeed;
if (percent <= 0)
{
percent = 0;
if (!hasClass(toPage, "dialog"))
fromPage.removeAttribute("selected");
clearInterval(timer);
checkTimer = setInterval(checkOrientAndLocation, 300);
setTimeout(updatePage, 0, toPage, fromPage);
}
if (axis == "y")
{
backwards
? fromPage.style.top = (100-percent) + "%"
: toPage.style.top = percent + "%";
}
else
{
fromPage.style.left = (backwards ? (100-percent) : (percent-100)) + "%";
toPage.style.left = (backwards ? -percent : percent) + "%";
}
}
}
function preloadImages()
{
var preloader = document.createElement("div");
preloader.id = "preloader";
document.body.appendChild(preloader);
}
function submitForm(form)
{
iui.showPageByHref(form.action || "POST", encodeForm(form), form.method);
}
function encodeForm(form)
{
function encode(inputs)
{
for (var i = 0; i < inputs.length; ++i)
{
if (inputs[i].name)
args.push(inputs[i].name + "=" + escape(inputs[i].value));
}
}
var args = [];
encode(form.getElementsByTagName("input"));
encode(form.getElementsByTagName("select"));
return args;
}
function findParent(node, localName)
{
while (node && (node.nodeType != 1 || node.localName.toLowerCase() != localName))
node = node.parentNode;
return node;
}
function hasClass(self, name)
{
var re = new RegExp("(^|\\s)"+name+"($|\\s)");
return re.exec(self.getAttribute("class")) != null;
}
function replaceElementWithSource(replace, source)
{
var page = replace.parentNode;
var parent = replace;
while (page.parentNode != document.body)
{
page = page.parentNode;
parent = parent.parentNode;
}
var frag = document.createElement(parent.localName);
frag.innerHTML = source;
page.removeChild(parent);
while (frag.firstChild)
page.appendChild(frag.firstChild);
}
function $(id) { return document.getElementById(id); }
function ddd() { console.log.apply(console, arguments); }
})();