/*************
*** Regex menu framework 1.2
*** by [[m:user:Pathoschild]]
*** documentation: http://meta.wikimedia.org/wiki/User:Pathoschild/Script:Regex_menu_framework
*************/
var rmf_globals = {};

if($.inArray( mw.config.get( 'wgAction' ), [ 'edit' , 'submit' ]) > -1) {
	/****************
	*** config tools
	****************/
	// function
	window.regexTool = function (name,functionname) {
		var newline = document.createElement('li');
	
		var newlink = document.createElement('a');
		newlink.setAttribute('href','javascript:'+functionname);
		newlink.setAttribute('title',name);
		newlink.setAttribute('class','sidebar-link');
		newlink.appendChild(document.createTextNode(name));
			
		newline.appendChild(newlink);
		toollist.appendChild(newline);
	};

	/****************
	*** framework tools
	****************/
	/* search only */
	window.regsearch = function (search) {
		return editbox.value.match(search);
	};
	
	/* search & replace */
	window.regex = function (search,replace,repeat) {
		/* define how many times to perform */
		if(!repeat || repeat<0) {
			var repeat = 1;
		}
			/* perform */
		for(var i=0; i<repeat; i++) {
			editbox.value = editbox.value.replace(search,replace);
		}
	};

	/* change reason */
	window.setreason = function(reason,mode) {
		// append once
		if( mode=='appendonce' && !rmf_globals['summary_'+reason] ) {
			rmf_globals['summary_'+reason] = 1;
			if(editreason.value.match(/[^\s]/))
				editreason.value += ', ' + reason;
			else
				editreason.value = reason;
		}
		// append mode
		else if(mode=='append' && editreason.value.match(/[^\s]/)) {
			editreason.value += ', ' + reason;
		}
		// default mode
		else {
			editreason.value = reason;
		}
	};

	/* set edit options */
	window.setoptions = function (minor,watch) {	
		// minor edit?
		if(minor=='true') {
			document.getElementById('wpMinoredit').checked = true;
		}
		else if(minor=='false') {
			document.getElementById('wpMinoredit').checked = false;
		}
		
		// watch page?
		if(watch=='true') {
			document.getElementById('wpWatchthis').checked = true;
		}
		else if(watch=='false') {
			document.getElementById('wpWatchthis').checked = false;
		}
	};

	/* automatically perform an action */
	window.doaction = function (action) {
		if(action=='preview') {
			document.getElementById('wpPreview').click();
		}
		else if(action=='diff') {
			document.getElementById('wpDiff').click();
		}
		else if(action=='save') {
			document.getElementById('wpSave').click();
		}
	};

	/****************
	*** Custom regex form tool
	****************/
	/* create form */
	window.custom = function () {
		/* if already open */
		if(document.getElementById('regexform')) {
			/* display reset warning, unless it's already displayed */
			if(!document.getElementById('resetwarning')) {
				/* ask the user whether he wants to reset the form or cancel */
				// create elements
				resetwarning = document.createElement('div');
				resetwarning.setAttribute('id','resetwarning');
				
				var resetlink = document.createElement('a');
				resetlink.setAttribute('href','javascript:customremove(); custom();');
				resetlink.setAttribute('title','Reset form');
				resetlink.appendChild(document.createTextNode('reset form'));
	
				var cancellink = document.createElement('a');
				cancellink.setAttribute('href','javascript:function customreset() { regexform.removeChild(resetwarning); }; customreset();');
				cancellink.setAttribute('title','Cancel new launch');
				cancellink.appendChild(document.createTextNode('cancel new launch'));
	
				// put message together
				resetwarning.appendChild(document.createTextNode('You are launching the Custom regex tool, but it is already open. Please select an action: '));
				resetwarning.appendChild(resetlink);
				resetwarning.appendChild(document.createTextNode(' or '));
				resetwarning.appendChild(cancellink);
	
				// output
				regexform.insertBefore(resetwarning,regexform.firstChild);
			}
		}
		else {	
			/* container */
			regexform = document.createElement('div');
			regexform.setAttribute('id','regexform');
			editbox.parentNode.insertBefore(regexform,editbox.parentNode.firstChild);
	
			/* header */
			var formheader = document.createElement('h3');
			formheader.appendChild(document.createTextNode('Custom regex form'));
			regexform.appendChild(formheader);
	
			/* instructions */
			var newlink = document.createElement('a');
			newlink.setAttribute('href','javascript:function opennew(url) { window.open(url); }; opennew("http://www.regular-expressions.info/javascript.html");');
			newlink.setAttribute('title','JavaScript regex tutorial');
			newlink.setAttribute('class','external text');
			newlink.appendChild(document.createTextNode('tutorial'));
	
			var newtext = document.createElement('p');
			newtext.appendChild(document.createTextNode('This form allows you to dynamically run any number of regular expression patterns. Enter a search pattern in the search box, in the form "search pattern" or "/search pattern/modifiers" (see '));
			newtext.appendChild(newlink);
			newtext.appendChild(document.createTextNode('), and a replacement text in the replacement box (reference groups use "$1" through "$9").'));
			regexform.appendChild(newtext);

			/* mini tutorial */
			var newtext = document.createElement('p');
			newtext.appendChild(document.createTextNode('Available modifiers (can be combined, like /foo/mig):'));
			regexform.appendChild(newtext);

			var newtext = document.createElement('ul');
			var newitem = document.createElement('li');
			newitem.appendChild(document.createTextNode('multiline (/foo/m): pattern matches per-line, instead of treating the whole document as one line.'));
			regexform.appendChild(newtext);
			newtext.appendChild(newitem);

			var newitem = document.createElement('li');
			newitem.appendChild(document.createTextNode('global (/foo/g): replace all matches, not just the first one.'));
			newtext.appendChild(newitem);

			var newitem = document.createElement('li');
			newitem.appendChild(document.createTextNode('case-insensitive (/foo/i): pattern ignores case, so "/foo/i" matches both "foo" and "FOO".'));
			newtext.appendChild(newitem);
			
			/* form tag */
			var formform = document.createElement('form');
			formform.setAttribute('id','regexformform');
			regexform.appendChild(formform);
	
			// place marker for input boxes
			inputlist = document.createElement('ol');
			formform.appendChild(inputlist);
	
			/* options */
			// list format
			var formoptions = document.createElement('ul');
			formform.appendChild(formoptions);
			
			// go! link
			var container = document.createElement('li');
			var newlink = document.createElement('a');
			newlink.setAttribute('href','javascript:customgo();');
			newlink.setAttribute('title','Perform the above patterns');
			newlink.appendChild(document.createTextNode('Perform the above patterns'));
			newlink.setAttribute('style','font-weight:bold;');
			container.appendChild(newlink);
			formoptions.appendChild(container);
	
			// add new boxes link
			var container = document.createElement('li');
			var newlink = document.createElement('a');
			newlink.setAttribute('href','javascript:customaddnew();');
			newlink.setAttribute('title','Add new search & replace boxes');
			newlink.appendChild(document.createTextNode('Add search & replace boxes'));
			container.appendChild(newlink);
			formoptions.appendChild(container);
	
			// remove form
			var container = document.createElement('li');
			var newlink = document.createElement('a');
			newlink.setAttribute('href','javascript:customremove();');
			newlink.setAttribute('title','Remove this form');
			newlink.appendChild(document.createTextNode('Remove this form'));
			newlink.setAttribute('style','color:red;');
			container.appendChild(newlink);
			formoptions.appendChild(container);
	
			// add first pair of input boxes
			customaddnew();
		}
	};
	
	/* add a new pair of input boxes */
	window.customaddnew = function () {
		/* count for later processing */
		if("patterncount" in window) {
			patterncount++;
		}
		else {
			patterncount = 0;
		}

		/* add new list item */
		var container = document.createElement('li');
		inputlist.appendChild(container);

		/* create search */
		var newinput = document.createElement('textarea');
		newinput.setAttribute('class','formsearch');
		newinput.setAttribute('tabindex',patterncount+100);
		newlabel = document.createElement('label');
		newlabel.setAttribute('for','formsearch');
		newlabel.appendChild(document.createTextNode('Search #'+(patterncount+1)));

		container.appendChild(newlabel);
		container.appendChild(newinput);
		
		/* force newline */
		container.appendChild(document.createElement('br'));

		/* create replace */
		var newinput = document.createElement('textarea');
		newinput.setAttribute('class','formreplace');
		newinput.setAttribute('tabindex',patterncount+101);
		newlabel = document.createElement('label');
		newlabel.setAttribute('for','formreplace');
		newlabel.appendChild(document.createTextNode('Replace #'+(patterncount+1)));
		
		container.appendChild(newlabel);
		container.appendChild(newinput);
	};

	/* run patterns */
	window.customgo = function () {
		/* get search and replace arrays */
		var arrpatterns = regexform.getElementsByTagName('textarea');
		arrsearch = [];
		arrreplace = [];
		var searchcount = -1;
		var replacecount = -1;

		for(i=0; i<arrpatterns.length; i++) {
			/* search boxes */
			if(arrpatterns[i].getAttribute('class') == 'formsearch') {
				searchcount++;
				arrsearch[searchcount] = arrpatterns[i].value;
			}
			/* replace boxes */
			else if (arrpatterns[i].getAttribute('class') == 'formreplace') {
				replacecount++;
				arrreplace[replacecount] = arrpatterns[i].value;
			}
		}

		/* perform patterns */
		for(var i=0; i<arrsearch.length; i++) {
			/* convert input to regex */
			// without delimiters
			if(!arrsearch[i].match(/^\s*\/[\s\S]*\/[a-z]*\s*$/i)) {
				arrsearch[i] = new RegExp(arrsearch[i]);
			}
			// with delimiters
			else {
				// break into parts
				var regpattern = arrsearch[i].replace(/^\s*\/([\s\S]*)\/[a-z]*\s*$/i,'$1');
				var regmodifiers = arrsearch[i].replace(/^\s*\/[\s\S]*\/([a-z]*)\s*$/,'$1');

				// filter invalid flags
				regmodifiers = regmodifiers.replace(/[^gim]/ig,'');

				// convert into array
				arrsearch[i] = new RegExp(regpattern, regmodifiers);
			}

			/* perform */
			editbox.value = editbox.value.replace(arrsearch[i],arrreplace[i]);
		}
	};

	/* remove form */
	function customremove() {
		regexform.parentNode.removeChild(regexform);
		patterncount = -1;
	};

	/****************
	*** create menu
	****************/
	window.rfmenu = function (rfmconfig) {
		/* get elements */
		// note: these must be global.
		editbox = document.getElementById('wpTextbox1');
		editreason = document.getElementById('wpSummary');
		sidebar = document.getElementById('mw-panel') /* vector */
			|| document.getElementById('column-one') /* monobook, myskin, chick & simple */
			|| document.getElementById('mw_portlets'); /* modern */

		if(!sidebar) return;
		/* add CSS */
		mw.util.addCSS('<style type="text/css">'
			+ '#p-regex li { list-style:none !important; }'
			+ '#p-regex a { color:gray !important; }'
			+ '#regexform { margin:1em; padding:0.5em; border:2px solid blue; }'
			+ '#regexform ol { list-style:none; border:1px solid #CCC; padding:0.5em; }'
			+ '#resetwarning { border:1px solid red; padding:3px; }'
			+ '</style>');

		/* create menu */
		var container = document.createElement('div');
		container.setAttribute('class','portlet portal collapsed');
		container.setAttribute('id','p-regex');
		sidebar.appendChild(container);
						
		var header = document.createElement('h3');
		header.appendChild(document.createTextNode('Scripts'));
		container.appendChild(header);
						
		var toolbox = document.createElement('div');
		toolbox.setAttribute('class','p-body pBody body');
		container.appendChild(toolbox);
						
		toollist = document.createElement('ul');
		toolbox.appendChild(toollist);
		

		/* load user-defined sidebar links */
		if(self['gadget_rmflinks']) { gadget_rmflinks(); }
		if(self['rmflinks']) { rmflinks(); }
	};

	/* load script */
	$(rfmenu);
	
	/* mark deprecated */
	(function() {
		var methods = ['regexTool', 'regsearch', 'regex', 'setreason', 'setoptions', 'doaction', 'custom', 'customaddnew', /*'customremove',*/ 'rfmenu'];
		for (var i = 0; i < methods.length; i++) {
			var method = methods[i];
			try {
				mw.log.deprecate(window, method, window[method], 'Use [[m:TemplateScript]] instead.', 'userscript-regexframework-' + method);
			} catch ( e ) {
				// Avoid TypeError: Cannot redefine property: regex
			}
		}
	})();
}