/*
gmDebug.js - CopyLeft 2011 Greg Macdonald, greg@ggmac.com
*/
/*
* Client debugging utility
*
* TODO: JSLint does not like the way we declare this singelton, preferring we remove 'new', but then
* we can't just use the gmDebug object because there isn't actually an instance. Hmmm...
*/
var gmDebug = new function () {
this.logWindow = null;
this.enabled = false;
this.enable = function (enable) {
this.enabled = enable || true;
if (!enable && this.logWindow) {
this.logWindow.close();
}
};
this.openLogWindow = function () {
if (!this.logWindow || this.logWindow.closed) {
this.logWindow = window.open('', 'gmDebugLog', 'height=500, width=350, location=no, menubar=no, resizable=yes, scrollbars=yes, status=no, toolbar=no');
if (this.logWindow) {
this.logWindow.document.writeln("Debug Logger");
}
}
this.enabled = (this.logWindow ? true : false);
};
this.clear = function () {
var pageContent;
if (this.enabled) {
this.openLogWindow(); // on page reload the log window can exist before we have a handle to it.
if (this.logWindow) {
pageContent = this.logWindow.document.getElementById('content');
if (pageContent) {
pageContent.innerHTML = "";
}
}
}
};
this.log = function (html) {
var line, pageContent;
if (this.enabled) {
this.openLogWindow();
line = this.logWindow.document.createElement('div');
line.innerHTML = html;
pageContent = this.logWindow.document.getElementById('content');
if (pageContent) {
pageContent.appendChild(line);
} else {
this.logWindow.document.firstChild.appendChild(line);
}
line.scrollIntoView();
}
};
// Dump an object or data element to the log.
this.dump = function (thing, label) {
var dumpStr = this.thingToString(thing, label) + "
";
this.log(dumpStr);
};
// Dump an object or data element to a string. Recurses contained compound objects
this.thingToString = function (thing, label) {
var name,
type = typeof thing,
str = (label || typeof thing) + " (" + type + ") ";
if ('object' === type) {
str += "";
for (name in thing) {
if (thing.hasOwnProperty(name)) {
str += this.thingToString(thing[name], name);
}
}
str += "
";
} else {
str += thing.toString() + "
";
}
return str;
};
};