penguin/AstroJS

botanjs/src/_this.js

raw · 8597 bytes

var BOTANJS_VERSION = "1.0.0b";
/*{{{ Shorthand Functions */
var __extends = function( obj, target ) {
	obj.prototype = Object.create( target.prototype );
	obj.prototype.constructor = obj;
};
var __readOnly = function( prototype, name, callback )
{
	Object.defineProperty( prototype, name, {
		get: callback
		, set: function( v ) {
			throw new Error( "Setting a read-only property: " + this.p );
		}.bind( { p: name } )
	} );
};
var __static_method = function( obj, name, callback )
{
	Object.defineProperty( obj, name, {
		get: function(){ return callback; }
		, set: function( v ) {
			throw new Error( "Setting a read-only property: " + this.p );
		}.bind( { p: name } )
	} );
};
var __const = __static_method;
/* End Shorthand Functions }}}*/

/*{{{ BotanEvent & EventDispatcher */

/** @type {typeof _BotanEvent} */
var BotanEvent;

BotanEvent = function( name, data )
{
	var __propagating = false;
	var __propagated = false;

	__static_method(
	   this, "propagate"
	   , function()
	   {
		   if( !__propagated )
		   {
			   __propagating = true;
		   }
		   __propagated = true;
	   }
	);

	__static_method(
	   this, "stopPropagating"
	   , function() { __propagating = false; }
	);

	__const( this, "type", name );

	__readOnly(
		this, "propagating"
		, function() { return __propagating; }
	);

	__const( this, "data", data );

	this.setTarget = function( target )
	{
		__const( this, "target", target );
		this.setTarget = undefined;
	}.bind( this );
};

/**
 * @constructor
 */
var EventDispatcher = function() {
	var events = {};
	var _self = this;

	var getStack = function(name)
	{
		if (!events[name]) events[name] = [];
		return events[name];
	};

	var _dispatch = function()
	{
		this.evt.propagate();

		for (var i in this.stack)
		{
			if (this.evt.propagating)
			{
				this.stack[i](this.evt);
			}
		}

		this.evt.stopPropagating();
	};

	/**
	 * @param {string} type
	 * @param {function(!BotanEvent): void} handler
	 * @return {void}
	 */
	this.addEventListener = function(type, handler)
	{
		var stack = getStack(type);
		stack[stack.length] = handler;
	};

	/**
	 * @param {string} type
	 * @param {function(!BotanEvent): void} handler
	 * @return {void}
	 */
	this.removeEventListener = function(type, handler)
	{
		var stack = getStack(type);
		var i = stack.indexOf(handler);
		if (i < 0) return;
		delete stack[i];
	};

	/**
	 * @param {!BotanEvent} _evt
	 * @return {boolean}
	 */
	this.dispatchEvent = function(_evt)
	{
		var _stack = getStack(_evt.type);
		if (_evt.setTarget) _evt.setTarget(_self);

		setTimeout(_dispatch.bind({ evt: _evt, stack: _stack }), 0);
		return true;
	};
};

/* End BotanEvent & EventDispatcher }}}*/

/**
 * @constructor
 * @extends {EventDispatcher}
 * @param {!Object<string, *>} target
 * @param {string} name
 */
var NamespaceObj = function(target, name)
{
	EventDispatcher.call(this);

	/** @private {!Object<string, *>} */
	this.t_ = target;

	/** @private {string} */
	this.n_ = name;
};

NamespaceObj.prototype = Object.create(EventDispatcher.prototype);
NamespaceObj.prototype.constructor = NamespaceObj;

/**
 * @param {string} type
 * @param {string} name
 * @param {*} obj
 * @return {void}
 */
NamespaceObj.prototype.exportSymbol = function(type, name, obj)
{
	if (this.t_[name]) return;

	this.t_[name] = [type, obj];

	var evt = new BotanEvent("NS_EXPORT", {
		"name": this.n_ + "." + name,
		"type": type
	});

	BotanJS.dispatchEvent(evt);
};

/**
 * @param {string} target
 * @return {*}
 */
NamespaceObj.prototype.invoke = function(target)
{
	if (!this.t_[target])
	{
		throw new Error(
			"[" + this.n_ + "] "
			+ "Invoke failed: " + target + " does not exists"
		);
	}

	return this.t_[target][1];
};

/**
 * @param {string} code
 * @param {function(...?): *} func
 * @return {void}
 */
NamespaceObj.prototype.trigger = function(code, func)
{
	this.t_.__TRIGGERS[code] = func;
};

/**
 * @param {string} message
 * @param {string=} subclass
 * @return {void}
 */
NamespaceObj.prototype.throwError = function(message, subclass)
{
	subclass = subclass ? ("." + subclass) : "";

	throw new Error(
		"[" + this.n_ + subclass + "] " + message
	);
};

var packages = {};
var _global = {};
var _NSs = {};
var _cacheIMP = {};

/*{{{ Constants */
var EX_CONST = 0;
var EX_VAR = 1;
var EX_CLASS = 2;
var EX_FUNC = 3;

var EX_READONLY_GETTER = 10;

var NS_INVOKE = 0;
var NS_EXPORT = 1;
var NS_TRIGGER = 10;
var NS_THROW = 11;

var TGR_IMPORT = 0;
/* End Constants }}}*/

/*{{{ Multi-instance handle */
// Check if we are being imported 2nd time
// If yes, we get the instance and overload
// some core methods
var sGarden = window["BotanJS"];

var BotanJS = null;
var __namespace = null;
var __import = null;

if( sGarden )
{
	BotanJS = sGarden["sg"][0];
	__namespace =  sGarden["sg"][1];
	__import = sGarden["sg"][2];
}
/* End Multi-instance handle }}}*/

/*{{{ Root level bug-free handlers */
BotanJS = BotanJS || (function()
{
	var i = 0;
	var mesg = [];
	var structures = [];
	var edp = new EventDispatcher();

	var log = {};
	log.write = function( m ) { mesg[ mesg.length ] = m; };
	__static_method( log, "read", function() { return mesg[ i ++ ]; } );
	__static_method( log, "end", function() { return ( mesg.length <= i ); } );

	__const( edp, "log", log );

	__static_method( edp, "define", function( f ) { structures[ structures.length ] = f; } );
	__static_method( edp, "getDef", function() { return structures.slice(); } );

	return edp;
})();
/* End Root level bug-free handlers }}}*/

/*{{{ Namespace declarator */
__namespace = __namespace || function(ns)
{
	if (_NSs[ns]) return _NSs[ns];

	var p = ns.split(".");
	var l = p.length;

	var target = packages;
	for (var i = 0; i < l; i++)
	{
		target[p[i]] = target[p[i]] || {};
		target = target[p[i]];
	}

	/** @type {!Object<string, function(...?): *>} */
	target.__TRIGGERS = {};

	var nsObj = new NamespaceObj(target, ns);

	BotanJS.dispatchEvent(new BotanEvent("NS_INIT", ns));

	nsObj[NS_EXPORT] = nsObj.exportSymbol.bind(nsObj);
	nsObj[NS_INVOKE] = nsObj.invoke.bind(nsObj);
	nsObj[NS_TRIGGER] = nsObj.trigger.bind(nsObj);
	nsObj[NS_THROW] = nsObj.throwError.bind(nsObj);

	return (_NSs[ns] = nsObj);
};
/* End Namespace declarator }}}*/

/*{{{ Import operator */
__import = __import || function( ns, noCache )
{
	var nss = ns.replace( ".*", "" );
	if( _NSs[ nss ] )
	{
		_NSs[ nss ].dispatchEvent( new BotanEvent( "NS_IMPORT", nss ) );
	}

	// Read The Cache First
	if( !noCache && _cacheIMP[ ns ] ) return _cacheIMP[ ns ];

	var p = ns.split(".");
	var l = p.length;

	var target = packages;
	var wildcard = false;
	for( var i = 0; i < l; i ++ )
	{
		if( p[i] == "*" )
		{
			wildcard = true;
			break;
		}

		target = target[ p[i] ];

		if( !target )
			throw new Error( "No such class: " + ns );
	}

	if( target instanceof Array && p[i] != "*" )
	{
		var rtarget = null;
		if( target[0] == EX_READONLY_GETTER )
		{
			rtarget = target[1]();
		}
		else
		{
			rtarget = target[1];
		}

		_cacheIMP[ ns ] = rtarget;
		return rtarget;
	}

	var nsObj = {};

	for( var i in target )
	{
		var j = target[i];
		if( j instanceof Array )
		{
			if( wildcard && j[0] == EX_CLASS )
			{
				__const( nsObj, i, j[1] );
			}
			else if( j[0] == EX_FUNC )
			{
				__const( nsObj, i, j[1] );
			}
			else if( j[0] == EX_CONST )
			{
				Object.defineProperty( nsObj, i, {
					get: function() {
						return this.t[ this.p ][1];
					}.bind( { p: i, t: target } )
					, set: function( v ) {
						throw new Error( "Setting a read-only property: " + this.p );
					}.bind( { p: i } )
				});
			}
			else if( j[0] == EX_VAR )
			{
				Object.defineProperty( nsObj, i, {
					get: function() {
						return this.t[ this.p ][1]();
					}.bind( { p: i, t: target } )
					, set: function( v ) {
						this.t[ this.p ][1]( v );
					}.bind( { p: i, t: target } )
				});
			}
			else if( j[0] == EX_READONLY_GETTER )
			{
				Object.defineProperty( nsObj, i, {
					get: j[1]
					, set: function( v ) {
						throw new Error( "Setting a read-only property: " + this.p );
					}.bind( { p: i } )
				});
			}
		}
		// import the namespace
		else if( wildcard && j.__TRIGGERS )
		{
			__const( nsObj, i, __import( nss + "." + i ) );
		}
	}

	_cacheIMP[ ns ] = nsObj;
	return nsObj;
};
/* End Import operator }}}*/

window["BotanJS"] = {};
window["BotanJS"]["version"] = BOTANJS_VERSION;
window["BotanJS"]["codename"] = "Botanical framework.js";
window["BotanJS"]["import"] = function( p )
{
	try { return __import( p ); }
	catch( e )
	{
		if( sGarden ) return sGarden["import"]( p );
		throw e;
	}
};
window["BotanJS"]["sg"] = [ BotanJS, __namespace, __import ];