https://polosbn.bnnonline.it/SebinaOpac/sebinayou/js/sy/12.0.SkipLinks.js

1var SkipLinks = (function() {
2
3  var closeTimer;
4  var hideTop
5
6  var ricercaNodeLink;
7  var centraleNodeLink;
8  var sxNodeLink;
9  var dxNodeLink;
10
11  function buildNode(label, href, accessKey) {
12    var nodeLI = document.createElement("li");
13    var nodeA = document.createElement('a');
14    nodeA.href = href;
15    nodeA.title = "";
16    nodeA.accessKey = accessKey;
17    nodeA.appendChild(document.createTextNode(label));
18    nodeLI.appendChild(nodeA);
19    return nodeLI;
20  }
21
22  function build(ricLbl, centraleLbl, sxLbl, dxLbl) {
23    var skiplinks = find.id("skiplinks");
24
25    ricercaNodeLink = buildNode(ricLbl, "#psspaziocentrale", "3");
26    centraleNodeLink = buildNode(centraleLbl, "#pagecentercontent", "5");
27
28    skiplinks.appendChild(ricercaNodeLink);
29    skiplinks.appendChild(centraleNodeLink);
30
31    sxNodeLink = buildNode(sxLbl, "#pageleftcontent", "6");
32    dxNodeLink = buildNode(dxLbl, "#pagerightcontent", "7");
33
34    set.event(skiplinks, "actualize", function(e) {
35      if (sxNodeLink.parentNode) {
36        sxNodeLink.parentNode.removeChild(sxNodeLink);
37      }
38
39      if (dxNodeLink.parentNode) {
40        dxNodeLink.parentNode.removeChild(dxNodeLink);
41      }
42
43      var skiplinks = document.querySelector("#skiplinks");
44
45      var leftContent = document.querySelector("#pageleftcontent");
46      var rightContent = document.querySelector("#pagerightcontent");
47
48      if(isValid(leftContent)) {
49        skiplinks.appendChild(sxNodeLink);
50      }
51
52      if(isValid(rightContent)) {
53        skiplinks.appendChild(dxNodeLink);
54      }
55
56      var size = get.size(skiplinks);
57      // aggiungo 50 come margine di sicurezza
58      hideTop = -(size.height + 50);
59      set.style(skiplinks, "top", hideTop + "px");
60    });
61
62    set.event(skiplinks, "focus", function(e) {
63      var top = get.style(skiplinks, "top");
64      if (top === 0) {
65        return true;
66      }
67      $(skiplinks).animate({ "top" : 0 }, 200);
68    });
69
70    set.event(skiplinks, "blur", function(e) {
71      clear.timeout(closeTimer);
72      closeTimer = set.timeout(function() {
73        var focus = query(":focus", skiplinks);
74        if (focus.length === 0) {
75          $(skiplinks).animate({ "top" : hideTop }, 200);
76        }
77      }, 200);
78    });
79  }
80
81  function isValid(column) {
82    if (!is.element(column) ||
83        nav.childs(column).length === 0 ||
84        !is.visible(column) ||
85        !is.visible(column.parentNode)) {
86      return false;
87    }
88    return true;
89  }
90
91  return {
92    init: function(ricLbl, centraleLbl, sxLbl, dxLbl) {
93      build(ricLbl, centraleLbl, sxLbl, dxLbl);
94    }
95  }
96}());
97