// Haddock JavaScript utilities
var rspace = /\s\s+/g,
rtrim = /^\s+|\s+$/g;
function spaced(s) { return (" " + s + " ").replace(rspace, " "); }
function trim(s) { return s.replace(rtrim, ""); }
function hasClass(elem, value) {
var className = spaced(elem.className || "");
return className.indexOf( " " + value + " " ) >= 0;
}
function addClass(elem, value) {
var className = spaced(elem.className || "");
if ( className.indexOf( " " + value + " " ) < 0 ) {
elem.className = trim(className + " " + value);
}
}
function removeClass(elem, value) {
var className = spaced(elem.className || "");
className = className.replace(" " + value + " ", " ");
elem.className = trim(className);
}
function toggleClass(elem, valueOn, valueOff, bool) {
if (bool == null) { bool = ! hasClass(elem, valueOn); }
if (bool) {
removeClass(elem, valueOff);
addClass(elem, valueOn);
}
else {
removeClass(elem, valueOn);
addClass(elem, valueOff);
}
return bool;
}
function makeClassToggle(valueOn, valueOff)
{
return function(elem, bool) {
return toggleClass(elem, valueOn, valueOff, bool);
}
}
toggleShow = makeClassToggle("show", "hide");
toggleCollapser = makeClassToggle("collapser", "expander");
function toggleSection(id)
{
var b = toggleShow(document.getElementById("section." + id));
toggleCollapser(document.getElementById("control." + id), b);
rememberCollapsed(id, b);
return b;
}
var collapsed = {};
function rememberCollapsed(id, b)
{
if(b)
delete collapsed[id]
else
collapsed[id] = null;
var sections = [];
for(var i in collapsed)
{
if(collapsed.hasOwnProperty(i))
sections.push(i);
}
// cookie specific to this page; don't use setCookie which sets path=/
document.cookie = "collapsed=" + escape(sections.join('+'));
}
function restoreCollapsed()
{
var cookie = getCookie("collapsed");
if(!cookie)
return;
var ids = cookie.split('+');
for(var i in ids)
{
if(document.getElementById("section." + ids[i]))
toggleSection(ids[i]);
}
}
function setCookie(name, value) {
document.cookie = name + "=" + escape(value) + ";path=/;";
}
function clearCookie(name) {
document.cookie = name + "=;path=/;expires=Thu, 01-Jan-1970 00:00:01 GMT;";
}
function getCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) {
return unescape(c.substring(nameEQ.length,c.length));
}
}
return null;
}
var max_results = 75; // 50 is not enough to search for map in the base libraries
var shown_range = null;
var last_search = null;
function quick_search()
{
perform_search(false);
}
function full_search()
{
perform_search(true);
}
function perform_search(full)
{
var text = document.getElementById("searchbox").value.toLowerCase();
if (text == last_search && !full) return;
last_search = text;
var table = document.getElementById("indexlist");
var status = document.getElementById("searchmsg");
var children = table.firstChild.childNodes;
// first figure out the first node with the prefix
var first = bisect(-1);
var last = (first == -1 ? -1 : bisect(1));
if (first == -1)
{
table.className = "";
status.innerHTML = "No results found, displaying all";
}
else if (first == 0 && last == children.length - 1)
{
table.className = "";
status.innerHTML = "";
}
else if (last - first >= max_results && !full)
{
table.className = "";
status.innerHTML = "More than " + max_results + ", press Search to display";
}
else
{
// decide what you need to clear/show
if (shown_range)
setclass(shown_range[0], shown_range[1], "indexrow");
setclass(first, last, "indexshow");
shown_range = [first, last];
table.className = "indexsearch";
status.innerHTML = "";
}
function setclass(first, last, status)
{
for (var i = first; i <= last; i++)
{
children[i].className = status;
}
}
// do a binary search, treating 0 as ...
// return either -1 (no 0's found) or location of most far match
function bisect(dir)
{
var first = 0, finish = children.length - 1;
var mid, success = false;
while (finish - first > 3)
{
mid = Math.floor((finish + first) / 2);
var i = checkitem(mid);
if (i == 0) i = dir;
if (i == -1)
finish = mid;
else
first = mid;
}
var a = (dir == 1 ? first : finish);
var b = (dir == 1 ? finish : first);
for (var i = b; i != a - dir; i -= dir)
{
if (checkitem(i) == 0) return i;
}
return -1;
}
// from an index, decide what the result is
// 0 = match, -1 is lower, 1 is higher
function checkitem(i)
{
var s = getitem(i).toLowerCase().substr(0, text.length);
if (s == text) return 0;
else return (s > text ? -1 : 1);
}
// from an index, get its string
// this abstracts over alternates
function getitem(i)
{
for ( ; i >= 0; i--)
{
var s = children[i].firstChild.firstChild.data;
if (s.indexOf(' ') == -1)
return s;
}
return ""; // should never be reached
}
}
function setSynopsis(filename) {
if (parent.window.synopsis && parent.window.synopsis.location) {
if (parent.window.synopsis.location.replace) {
// In Firefox this avoids adding the change to the history.
parent.window.synopsis.location.replace(filename);
} else {
parent.window.synopsis.location = filename;
}
}
}
function addMenuItem(html) {
var menu = document.getElementById("page-menu");
if (menu) {
var btn = menu.firstChild.cloneNode(false);
btn.innerHTML = html;
menu.appendChild(btn);
}
}
function adjustForFrames() {
var bodyCls;
if (parent.location.href == window.location.href) {
// not in frames, so add Frames button
addMenuItem("<a href='#' onclick='reframe();return true;'>Frames</a>");
bodyCls = "no-frame";
}
else {
bodyCls = "in-frame";
}
addClass(document.body, bodyCls);
}
function reframe() {
setCookie("haddock-reframe", document.URL);
window.location = "frames.html";
}
function postReframe() {
var s = getCookie("haddock-reframe");
if (s) {
parent.window.main.location = s;
clearCookie("haddock-reframe");
}
}
function styles() {
var i, a, es = document.getElementsByTagName("link"), rs = [];
for (i = 0; a = es[i]; i++) {
if(a.rel.indexOf("style") != -1 && a.title) {
rs.push(a);
}
}
return rs;
}
function addStyleMenu() {
var as = styles();
var i, a, btns = "";
for(i=0; a = as[i]; i++) {
btns += "<li><a href='#' onclick=\"setActiveStyleSheet('"
+ a.title + "'); return false;\">"
+ a.title + "</a></li>"
}
if (as.length > 1) {
var h = "<div id='style-menu-holder'>"
+ "<a href='#' onclick='styleMenu(); return false;'>Style ▾</a>"
+ "<ul id='style-menu' class='hide'>" + btns + "</ul>"
+ "</div>";
addMenuItem(h);
}
}
function setActiveStyleSheet(title) {
var as = styles();
var i, a, found;
for(i=0; a = as[i]; i++) {
a.disabled = true;
// need to do this always, some browsers are edge triggered
if(a.title == title) {
found = a;
}
}
if (found) {
found.disabled = false;
setCookie("haddock-style", title);
}
else {
as[0].disabled = false;
clearCookie("haddock-style");
}
styleMenu(false);
}
function resetStyle() {
var s = getCookie("haddock-style");
if (s) setActiveStyleSheet(s);
}
function styleMenu(show) {
var m = document.getElementById('style-menu');
if (m) toggleShow(m, show);
}
function pageLoad() {
addStyleMenu();
adjustForFrames();
resetStyle();
restoreCollapsed();
}