// The "Dynano" Javascript framework. Similar in syntax to JQuery but highly Enano-specific (TinyMCE, etc).

var $dynano = function(id)
{
	return new DNobj(id);
}
function DNobj(id)
{
	if ( id == undefined )
	{
		return {};
	}
	this.object = ( typeof(id) == 'object' ) ? id : document.getElementById(id);
	if ( !this.object )
	{
		console.warn('Dynano: requested object is bad. id parameter follows.');
		console.debug(id);
		this.object = false;
		return this;
	}
	if ( this.object.Dynano )
	{
		return this.object.Dynano;
	}
	this.object.Dynano = this;
	
	this.height = __DNObjGetHeight(this.object);
	this.width = __DNObjGetWidth(this.object);
	
	if ( this.object.tagName == 'TEXTAREA' && ( typeof(tinyMCE) == 'object' || typeof(tinyMCE_GZ) == 'object' ) )
	{
		this.object.dnIsMCE = 'no';
		this.switchToMCE = DN_switchToMCE;
		this.destroyMCE = DN_destroyMCE;
		this.getContent = DN_mceFetchContent;
		this.setContent = DN_mceSetContent;
		this.makeSwitchable = DN_makeSwitchableTA;
		this.isMCE = DN_isMCE;
	}
}
function __DNObjGetHeight(o) {
	return o.offsetHeight;
}

function __DNObjGetWidth(o) {
	return o.offsetWidth;
}

function addClass(obj, clsname)
{
	var cnt = obj.className;
	var space = ( (cnt + '').length > 0 ) ? ' ' : '';
	var cls = cnt + space + clsname;
	obj.className = cls;
}

function rmClass(obj, clsname)
{
	var cnt = obj.className;
	if ( cnt == clsname )
	{
		obj.className = '';
	}
	else
	{
		cnt = cnt.replace(clsname, '');
		cnt = trim(cnt);
		obj.className = cnt;
	}
}

function hasClass(obj, clsname)
{
	var cnt = obj.className;
	if ( !cnt )
		return false;
	if ( cnt == clsname )
		return true;
	cnt = cnt.split(' ');
	
	for ( var i in cnt )
		if ( cnt[i] == clsname )
			return true;
		
	return false;
}
function __DNObjGetLeft(obj) {
	var left_offset = obj.offsetLeft;
	while ((obj = obj.offsetParent) != null) {
		left_offset += obj.offsetLeft;
	}
	return left_offset;
}

function __DNObjGetTop(obj) {
	var left_offset = obj.offsetTop;
	while ((obj = obj.offsetParent) != null) {
		left_offset += obj.offsetTop;
	}
	return left_offset;
}

function DN_switchToMCE(performWikiTransform)
{
	if ( !this.object.id )
		this.object.id = 'textarea_' + Math.floor(Math.random() * 1000000);
	if ( !this.object.name )
		this.object.name = 'textarea_' + Math.floor(Math.random() * 1000000);
	// Updated for TinyMCE 3.x
	if ( performWikiTransform )
	{
		this.object.value = DN_WikitextToXHTML(this.object.value);
	}
	// If tinyMCE init hasn't been called yet, do it now.
	if ( !tinymce_initted )
	{
		console.info('$dynano().switchToMCE(): doing "exact"-type MCE init');
		enano_tinymce_options.mode = 'exact';
		enano_tinymce_options.elements = this.object.id;
		initTinyMCE();
		this.object.dnIsMCE = 'yes';
		return true;
	}
	else
	{
		console.info('$dynano().switchToMCE(): tinyMCE already loaded, calling mceAddControl');
		tinymce.EditorManager.execCommand("mceAddControl", true, this.object.id);
		this.object.dnIsMCE = 'yes';
	}
	return this;
}

function DN_destroyMCE(performWikiTransform)
{
	//if ( !this.object.dn_is_mce )
	//  return this;
	if ( this.object.id && window.tinymce )
	{
		// TinyMCE 2.x
		// tinymce.EditorManager.removeMCEControl(this.object.name);
		// TinyMCE 3.x
		var ed = tinymce.EditorManager.getInstanceById(this.object.id);
		if ( ed )
		{
			if ( !tinymce.EditorManager.execCommand("mceRemoveEditor", false, this.object.id) )
				alert('could not destroy editor');
			if ( performWikiTransform )
			{
				this.object.value = DN_XHTMLToWikitext(this.object.value);
			}
		}
	}
	this.object.dnIsMCE = 'no';
	return this;
}

function DN_isMCE()
{
	return ( this.object.dnIsMCE == 'yes' );
}

function DN_mceFetchContent()
{
	if ( this.object.name )
	{
		var text = this.object.value;
		if ( tinymce.EditorManager.get(this.object.id) )
		{
			var editor = tinymce.EditorManager.get(this.object.id);
			text = editor.getContent();
		}
		return text;
	}
	else
	{
		return this.object.value;
	}
}

function DN_mceSetContent(text)
{
	if ( this.object.name )
	{
		this.object.value = text;
		if ( tinymce.EditorManager.get(this.object.id) )
		{
			var editor = tinymce.EditorManager.get(this.object.id);
			editor.setContent(text);
		}
	}
	else
	{
		this.object.value = text;
	}
}

var P_BOTTOM = 1;
var P_TOP = 2;

function DN_makeSwitchableTA(pos)
{
	if ( this.toggler )
		return false;
	
	if ( !pos )
		pos = P_BOTTOM;
	
	load_component('l10n');
	var cookiename = 'enano_editor_mode';
	
	var toggler = document.createElement('div');
	toggler.dynano = this;
	this.toggler = toggler;
	
	if ( !this.object.id )
		this.object.id = 'dynano_auto_' + Math.floor(Math.random() * 1000000);
	
	toggler.s_mode_text = $lang.get('editor_btn_wikitext');
	toggler.s_mode_graphical = $lang.get('editor_btn_graphical');
	
	toggler.set_text = function()
	{
		if ( this.dynano.object.dnIsMCE == 'yes' )
			this.dynano.destroyMCE();
		
		this.innerHTML = '';
		this.appendChild(document.createTextNode(this.s_mode_text + ' | '));
		
		var link = document.createElement('a');
		link.href = '#';
		link.onclick = function()
		{
			this.parentNode.set_graphical();
			return false;
		}
		link.appendChild(document.createTextNode(this.s_mode_graphical));
		this.appendChild(link);
		
		createCookie('enano_editor_mode', 'text', 365);
	}
	
	toggler.set_graphical = function()
	{
		this.dynano.switchToMCE();
		this.innerHTML = '';
		
		var link = document.createElement('a');
		link.href = '#';
		link.onclick = function()
		{
			this.parentNode.set_text();
			return false;
		}
		link.appendChild(document.createTextNode(this.s_mode_text));
		this.appendChild(link);
		
		this.appendChild(document.createTextNode(' | ' + this.s_mode_graphical));
		createCookie('enano_editor_mode', 'tinymce', 365);
	}
	
	toggler.style.styleFloat = 'right';
	toggler.style.cssFloat = 'right';
	if ( pos == P_BOTTOM )
	{
		insertAfter(this.object.parentNode, toggler, this.object);
	}
	else
	{
		this.object.parentNode.insertBefore(toggler, this.object);
	}
	
	if ( readCookie(cookiename) == 'tinymce' )
	{
		toggler.set_graphical();
	}
	else
	{
		toggler.set_text();
	}
}

function DN_WikitextToXHTML(text)
{
	return DN_AjaxGetTransformedText(text, 'xhtml');
}

function DN_XHTMLToWikitext(text)
{
	return DN_AjaxGetTransformedText(text, 'wikitext');
}

// AJAX to the server to transform text
function DN_AjaxGetTransformedText(text, to)
{
	// get an XHR instance
	var ajax = ajaxMakeXHR();
	
	var uri = stdAjaxPrefix + '&_mode=transform&to=' + to;
	var parms = 'text=' + ajaxEscape(text);
	try
	{
		ajax.open('POST', uri, false);
		ajax.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		// Setting Content-length in Safari triggers a warning
		if ( !is_Safari )
		{
			ajax.setRequestHeader("Content-length", parms.length);
		}
		ajax.send(parms);
		// async request, so if status != 200 at this point then we're screwed
		if ( ajax.readyState == 4 && ajax.status == 200 )
		{
			var response = String(ajax.responseText + '');
			if ( !check_json_response(response) )
			{
				handle_invalid_json(response);
				return text;
			}
			response = parseJSON(response);
			if ( response.mode == 'error' )
			{
				alert(response.error);
				return text;
			}
			return response.text;
		}
	}
	catch(e)
	{
		console.warn('DN_AjaxGetTransformedText: XHR failed');
	}
	return text;
}

DNobj.prototype.addClass = function(clsname) { addClass(this.object, clsname); return this; };
DNobj.prototype.rmClass  = function(clsname) { rmClass( this.object, clsname); return this; };
DNobj.prototype.hasClass = function(clsname) { return hasClass(this.object, clsname); };
DNobj.prototype.Height   = function()        { return __DNObjGetHeight(this.object); }
DNobj.prototype.Width    = function()        { return __DNObjGetWidth( this.object); }
DNobj.prototype.Left     = function()        { /* return this.object.offsetLeft; */ return __DNObjGetLeft(this.object); }
DNobj.prototype.Top      = function()        { /* return this.object.offsetTop;  */ return __DNObjGetTop( this.object); }