// a simple dialog to allow user to paste in some 'embed' HTML and show it via a clickable image

CKEDITOR.dialog.add('bfembed', function(editor) {
	// check embed content and return first valid content object
	var validateEmbedContent = function(content) {
		var srchTags = ['embed', 'object', 'applet', 'iframe'],
			lContent = content.toLowerCase(),
			valid = false,
			sPos, ePos, i, tag, start = -1, end = -1;
		for (i = 0; i < srchTags.length; i++) {
			tag = srchTags[i];
			// find first tag start
			sPos = lContent.indexOf('<' + tag);
			// find end tag
			if (sPos >= 0) {
				var endtag = '\/'+tag+'>';
				ePos = lContent.lastIndexOf(endtag);
				if (sPos < start || start < 0) {
					start = sPos;
					end = ePos + tag.length + 2;
				}
			}
		}
		if (start >= 0 && end >= 0) {
			content = content.slice(start, end);
			valid = true;
		}
		return valid;
	};
	// dialog definition
	return {
		title : FIRSTCLASS.locale.editor.embed.title,
		minWidth : 415,
		minHeight : 128,

		onOk : function() {
			var m = editor.message; // the message
			// sniff out content size
			var content = this.getValueOf('info', 'embedcontents');
			var w = 320, h = 240;
			var pos = content.indexOf('width="');
			if (pos > 0) {
				w = content.slice(pos + 7, content.indexOf('"', pos + 7)) - 0;
			}
			pos = content.indexOf('height="');
			if (pos > 0) {
				h = content.slice(pos + 8, content.indexOf('"', pos + 8)) - 0;
			}
			// test for valid content (and filter out invalid stuff)
			var isValid = validateEmbedContent(content);
			if (isValid) {
				// save image attrs and post attachment data
				var url = FIRSTCLASS.lang.ensureSlashUrl(m._config.baseURL) + FIRSTCLASS.opCodes.FormSave + "?KeepNames=1&Close=-1";
				if (FIRSTCLASS.session.server.requiresvkeys && editor.message._embedVKey) {
					url += "&VKey=" + editor.message._embedVKey;
				}
				m._embedIdx++;
				var attrs = [m._embedIdx, w, h];
				if (content !== "" && this._ckEl) {
					this._ckEl.setAttribute('fcid', 'fcestart');
					this._ckEl.setAttribute('fcattrs', attrs.join(";"));
					var urlStart = content.indexOf('http://'), urlEnd, tUrl;
					if (urlStart > 0) {
						urlEnd = content.indexOf('/', urlStart + 7);
						tUrl = content.slice(urlStart, urlEnd);
						this._ckEl.setAttribute('title','Embed content from ' + tUrl);
					}
					var data = [
						{	name: 'AttName',
							value: 'embed' + m._embedIdx + '.html'
						},
						{	name: 'Embed',
							value: content
						},
						{	name: 'Close',
							value: '-1'
						}
					];
					var post = FIRSTCLASS.util.net.createPostData(data);
					FIRSTCLASS.util.net.asyncRequest('POST', url, {}, post.postData, post.cfg);
					m._embedContents[m._embedIdx] = content;
				}
			} else {
				alert(FIRSTCLASS.locale.editor.embed.scanerror);
			}
			return isValid;
		},
		onCancel : function() {
			if (this._isNew) {
				var br = this._ckEl.getNext();
				br.remove();
				this._ckEl.remove();
			}
		},
		onShow : function() {
			this._isNew = true;
			this._ckEl = false;
			var sel = editor.getSelection();
			var el = sel.getSelectedElement();
			var m = editor.message;
			if (el && el.is && el.is('img') && el.hasClass('fcEmbed')) {
				this._ckEl = el;
				this._isNew = false;
				// fetch previous contents
				var theAttrs = this._ckEl.getAttribute('fcattrs');
				if (theAttrs) {
					var params = theAttrs.split(";");
					var index = params[0] - 0;
					if (!this._isNew) {
						if (m._embedContents[index]) {
							this.setValueOf('info','embedcontents', m._embedContents[index]);
						} else {
							var that = this;
							var callback = {
								success: function(response) {
									that.setValueOf('info','embedcontents', response.responseText);
								}
							};
							var url = m._config.baseURL;
							if (url.indexOf(m._config.op)) {
								url = url.slice(0, url.indexOf(m._config.op));
							}
							url = FIRSTCLASS.lang.ensureSlashUrl(url) + "embed" + index + ".html?Close=-1";
							FIRSTCLASS.util.net.asyncRequest('GET', url, callback);
						}
					}
				}
			} else {
				// create the placeholder image
				this._ckEl = CKEDITOR.dom.element.createFromHtml("<img src='" + FIRSTCLASS.session.ui.fcbase.absolute + "/images/EmbedActiveContent.gif' class='fcEmbed'/>", editor.document);
				editor.insertElement(this._ckEl);
				var br = editor.document.createElement('br');
				br.insertAfter(this._ckEl);
			}
				if (FIRSTCLASS.session.server.requiresvkeys) {
					// update message's vkey for next time
					var vkeycb = function(key) {
						editor.message._embedVKey = key;
					};
					FIRSTCLASS.util.net.getVKey(vkeycb);
				}
		},
		contents : [
		{	id : 'info',
			elements :	[
			{	type : 'textarea',
				id : 'embedcontents',
				width: '85%',
				label : FIRSTCLASS.locale.editor.embed.paste
			}
			]
		}
		]
	};
} );