miscellany/scripts.js at main · njsoly/miscellany · GitHub

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/* scripts.js */
try { console.debug("loading scripts.js."); } catch (e){ }

/** definitions to save some exceptions that needn't happen */
defineThings = function(){
	if(typeof console != "undefined" && typeof console.info != "undefined"){	info = function(msg){	console.info(msg);	}}
	if(typeof console != "undefined" && typeof console.debug != "undefined"){	debug = function(msg){	console.debug(msg);	}}
	if(typeof console != "undefined" && typeof console.log != "undefined"){log = function(msg){console.log(msg);}}
	if(typeof console != "undefined" && typeof console.warn != "undefined"){warn = function(msg){console.warn(msg);}}
	if(typeof console != "undefined" && typeof console.error != "undefined"){error = function(msg){console.error(msg);}}
	if(typeof body == "undefined"){body = document.body;}
	if(typeof DEBUG == "undefined"){DEBUG = false;}
	if(typeof tmp == "undefined"){tmp = null;}
}
defineThings();

/**
 * For console.info, .debug, .log, .warn, and .error,
 * create new shortcuts to them without the "console.".
 */
__initLoggerShortcuts = function(){
	if(typeof console != "undefined"){
		if(typeof console.info != "undefined"){
			info = function(msg){
				console.info(msg);
			};
		}
		if(typeof console.debug != "undefined"){
			debug = function(msg){
				console.debug(msg);
			};
		}
		if(typeof console.log != "undefined"){
			log = function(msg){
				console.log(msg);
			};
		}
		if(typeof console.warn != "undefined"){
			warn = function(msg){
				console.warn(msg);
			};
		}
		if(typeof console.error != "undefined"){
			error = function(msg){
				console.error(msg);
			};
		}
	}
}

__initLoggerShortcuts();

/**
 * Toggle the visibility of an object or array or list of objects.
 * In writing this function, I expected the object(s) in question
 * to be a visible DOM element.
 *
 * I'm not sure whether current the jQuery-marked-up objects behave
 * properly or not.
 * @TESTME toggleVisibility :: jQuery
 *
 */
toggleVisibility = function(x){
	/* if there is no parameter passed, log a warning about it. */
	if(typeof x == "undefined"){
		console.warn("toggleVisibiity(): undefined param.");
		return;
	}

	// if the object is an array or list
	if(typeof x.length != "undefined"){
		for(i = 0; i < x.length; i++){
			o=x[i];
			o.style["display"] = (o.style["display"]=="none") ? "" : "none";

		}
	}

	// if the object is just one thing.
	else {
		x.style["display"] = (x.style["display"]=="none") ? "" : "none";

	}
}

/** Pass in a DOM block element, and enable or disable its visibility.
 * @param x the object of which to assign [in]visibility.
 * @param visible a boolean, designating whether to display the element.
 */
setVisibility = function(x,visible){
	if(typeof x == "undefined") return;
	x.style["display"] = (typeof visible == "undefined" || visible == true) ? "" : "none";
}

// Prototype for general objects (? -- TODO TEST IT)
if("undefined" == typeof Object.prototype.setVisibility){
	Object.prototype.setVisibility = function(visible){
		setVisibility(this, visible);
	}
}

/** This is a singleton object to perform document creation
 * 	(and possibly some more stuff later).
 */
sir = {
	lastReturn : null,
	debug : (typeof DEBUG !== "undefined" ? DEBUG : true),
};

/**
 * Creates a new TEXT node, and if defined, the first argument
 * becomes its content.
 * @returns the new text node (does not add it to the document).
 */
sir.textNode = function(msg){
	var node;
	if (typeof msg !== "undefined"){
		node = document.createTextNode(msg);
		if(DEBUG) debug("creating text node with text \"" + msg + "\".");
	}
	else{
		node = document.createTextNode("");
		if(DEBUG) debug("creating text node with empty string.");
	}
	this.lastReturn = node;
	return node;
}

/**
 * Appends a div to document.body, and returns that new DIV.
 * One optional argument: becomes the HTML inside the new DIV.
 */
sir.appendDiv = function(html){
	var div;
	div = document.createElement("div");
	if (typeof html !== "undefined"){
		div.innerHTML = html;
		if(DEBUG)
			console.debug("setting innerHTML of div to \"" + html + "\".");
	}
	else{
		if(DEBUG)
			console.debug("creating empty DIV and appending.");
	}
	document.body.appendChild(div);
	this.lastReturn = div;
	return div;

}

var intervalIDs = [];
var theTime;

intervalIDs.push(setInterval(function(){
	theTime = Date();
}, 900));

try {	console.debug("done loading scripts.js."); }  catch (e) {}