User:Quarl/wikistate.js

// User:Quarl/wikistate.js - utilities to keep track of session state

// Session state persists THROUGHOUT THIS SESSION, on THIS PAGE ONLY

// * Currently works with back/forward/refresh, but not with navigating anew.

// Usage:

// wikistate.set('foo', 123);

// alert("foo = " + wikistate.get('foo'));

// quarl 2006-02-05 initial version

//

document.write('
'+

'
');

wikistate = new Object();
wikistate._load = function() {
wikistate._dataNode = document.getElementById('wikiState_data');
wikistate._dataString = wikistate._dataNode.value || '';
wikistate._data = wikistate._deserialize(wikistate._dataString) || {};
}
wikistate.save = function() {
wikistate._dataString = wikistate._serialize(wikistate._data);
wikistate._dataNode.value = wikistate._dataString;
}
wikistate.get = function(varname) {
return wikistate._data[varname];
}
wikistate.set = function(varname, value, nosave) {
// if (!(value instanceof String)) {
//     alert("wikistate error: must be a string (error 5dc01aeb-2fc1-44ca-a0bd-359ec9210f46)");
//     return;
// }
wikistate._data[varname] = value;
if (!nosave) wikistate.save();
}
wikistate._serialize = function(dict) {
return dict.toSource();
// var r = '';
// for (var v in dict) {
//     var value = dict[r];
//     if (!(value instanceof String)) continue;
//     r += value+':'+string_quote_escape(value);
// }
}
wikistate._deserialize = function(s) {
// since only we can write to the form data, should be safe to evaluate
// it.
return eval(s);
}
$(wikistate._load);
//