blob: d37c2289ba83fcdc74286d95cd03fe039ff4804d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
define(function() {
'use strict';
var all_pages = 'home studying curriculum campus career disclaimer'.split(' ');
var cacheBuster = '';
if (/dev/.test(location.search)) {
cacheBuster = '?t=' + (new Date()).getTime();
}
/* loads a page into view and execute scripts */
function loadContent(name, text) {
var contentElement = document.getElementById('content');
contentElement.innerHTML = text;
document.body.dataset.page = name;
// execute scripts in page
[].forEach.call(contentElement.getElementsByTagName('script'),
function(origScript) {
var script = document.createElement('script');
// copy attributes
[].forEach.call(origScript.attributes, function(a) {
script.setAttribute(a.name, a.value);
});
// copy contents
script.textContent = origScript.textContent;
origScript.parentNode.replaceChild(script, origScript);
});
}
/* tries to navigate to a page */
var current_page;
function selectPage(page, anchor) {
if (all_pages.indexOf(page) == -1) {
// TODO: 404
console.log("404 " + page);
return false;
}
if (current_page === page) {
return;
}
current_page = page;
console.log("Loading " + page);
var http = new XMLHttpRequest();
http.onload = function() {
loadContent(page, http.responseText);
// focus element when loaded
var anchor_id = /^#(.+)/.exec(anchor);
if (anchor_id) {
var selection = document.getElementById(anchor_id[1]);
if (selection) {
selection.scrollIntoView();
}
}
};
http.open('get', 'pages/' + page + '.html' + cacheBuster);
http.send(null);
return true;
}
function changePageHash(hash) {
var m = /#\/([^\/]+)/.exec(hash);
if (m) {
selectPage(m[1], hash);
} else {
location.hash = '#/home';
selectPage('home', hash);
}
}
addEventListener('hashchange', function(ev) {
changePageHash(ev.newURL);
});
// Tries to load the current page, falling back to "home" for unknown URLs.
changePageHash(location.hash);
});
|
