about summary refs log tree commit diff stats
path: root/archive/0.vm.arc/charterm/planet-docs/doc/scribble-common.js
blob: 00eec767fc23f7acfbb7603ad803600a7d13dce1 (plain) (blame)
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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
// Common functionality for PLT documentation pages

// Page Parameters ------------------------------------------------------------

var page_query_string =
  (location.href.search(/\?([^#]+)(?:#|$)/) >= 0) && RegExp.$1;

var page_args =
  ((function(){
      if (!page_query_string) return [];
      var args = page_query_string.split(/[&;]/);
      for (var i=0; i<args.length; i++) {
        var a = args[i];
        var p = a.indexOf('=');
        if (p >= 0) args[i] = [a.substring(0,p), a.substring(p+1)];
        else args[i] = [a, false];
      }
      return args;
    })());

function GetPageArg(key, def) {
  for (var i=0; i<page_args.length; i++)
    if (page_args[i][0] == key) return unescape(page_args[i][1]);
  return def;
}

function MergePageArgsIntoLink(a) {
  if (page_args.length == 0 ||
      (!a.attributes["data-pltdoc"]) || (a.attributes["data-pltdoc"].value == ""))
    return;
  a.href.search(/^([^?#]*)(?:\?([^#]*))?(#.*)?$/);
  if (RegExp.$2.length == 0) {
    a.href = RegExp.$1 + "?" + page_query_string + RegExp.$3;
  } else {
    // need to merge here, precedence to arguments that exist in `a'
    var i, j;
    var prefix = RegExp.$1, str = RegExp.$2, suffix = RegExp.$3;
    var args = str.split(/[&;]/);
    for (i=0; i<args.length; i++) {
      j = args[i].indexOf('=');
      if (j) args[i] = args[i].substring(0,j);
    }
    var additions = "";
    for (i=0; i<page_args.length; i++) {
      var exists = false;
      for (j=0; j<args.length; j++)
        if (args[j] == page_args[i][0]) { exists = true; break; }
      if (!exists) str += "&" + page_args[i][0] + "=" + page_args[i][1];
    }
    a.href = prefix + "?" + str + suffix;
  }
}

// Cookies --------------------------------------------------------------------

function GetCookie(key, def) {
  var i, cookiestrs;
  try {
    if (document.cookie.length <= 0) return def;
    cookiestrs = document.cookie.split(/; */);
  } catch (e) { return def; }
  for (i = 0; i < cookiestrs.length; i++) {
    var cur = cookiestrs[i];
    var eql = cur.indexOf('=');
    if (eql >= 0 && cur.substring(0,eql) == key)
      return unescape(cur.substring(eql+1));
  }
  return def;
}

function SetCookie(key, val) {
  var d = new Date();
  d.setTime(d.getTime()+(365*24*60*60*1000));
  try {
    document.cookie =
      key + "=" + escape(val) + "; expires="+ d.toGMTString() + "; path=/";
  } catch (e) {}
}

// note that this always stores a directory name, ending with a "/"
function SetPLTRoot(ver, relative) {
  var root = location.protocol + "//" + location.host
           + NormalizePath(location.pathname.replace(/[^\/]*$/, relative));
  SetCookie("PLT_Root."+ver, root);
}

// adding index.html works because of the above
function GotoPLTRoot(ver, relative) {
  var u = GetCookie("PLT_Root."+ver, null);
  if (u == null) return true; // no cookie: use plain up link
  // the relative path is optional, default goes to the toplevel start page
  if (!relative) relative = "index.html";
  location = u + relative;
  return false;
}

// Utilities ------------------------------------------------------------------

var normalize_rxs = [/\/\/+/g, /\/\.(\/|$)/, /\/[^\/]*\/\.\.(\/|$)/];
function NormalizePath(path) {
  var tmp, i;
  for (i = 0; i < normalize_rxs.length; i++)
    while ((tmp = path.replace(normalize_rxs[i], "/")) != path) path = tmp;
  return path;
}

// `noscript' is problematic in some browsers (always renders as a
// block), use this hack instead (does not always work!)
// document.write("<style>mynoscript { display:none; }</style>");

// Interactions ---------------------------------------------------------------

function DoSearchKey(event, field, ver, top_path) {
  var val = field.value;
  if (event && event.keyCode == 13) {
    var u = GetCookie("PLT_Root."+ver, null);
    if (u == null) u = top_path; // default: go to the top path
    u += "search/index.html?q=" + escape(val);
    if (page_query_string) u += "&" + page_query_string;
    location = u;
    return false;
  }
  return true;
}

function TocviewToggle(glyph, id) {
  var s = document.getElementById(id).style;
  var expand = s.display == "none";
  s.display = expand ? "block" : "none";
  glyph.innerHTML = expand ? "&#9660;" : "&#9658;";
}

// Page Init ------------------------------------------------------------------

// Note: could make a function that inspects and uses window.onload to chain to
// a previous one, but this file needs to be required first anyway, since it
// contains utilities for all other files.
var on_load_funcs = [];
function AddOnLoad(fun) { on_load_funcs.push(fun); }
window.onload = function() {
  for (var i=0; i<on_load_funcs.length; i++) on_load_funcs[i]();
};

AddOnLoad(function(){
    var links = document.getElementsByTagName("a");
    for (var i=0; i<links.length; i++) MergePageArgsIntoLink(links[i]);
    var label = GetPageArg("ctxtname",false);
    if (!label) return;
    var indicator = document.getElementById("contextindicator");
    if (!indicator) return;
    indicator.innerHTML = label;
    indicator.style.display = "block";
  });