MediaWiki:Gadget-NopInserter.js

// Inserts a NOP on the previous Page: page.
// Complain to User:Inductiveload
// Release  1.0	- 2012-04-23 - initial release
//          1.1 - 2012-04-25 - add user option to auto advance
//
// To automatically advance to the edited page after adding a {{nop}},
// add the following to your user JS:
//
// //Automatically advance to the previous page after checking for nops
// mw.user.options.set({'nopinserter_auto_advance':true});

NopInserter = function(){
	var myself=this;
	
	var match = /(.*?)\/([0-9]+)/.exec( mw.config.get('wgPageName') );
	
	if (match === null ){ return }
	
	var basename = match[1];
	var pagenum = parseInt(match[2]);
	
	if (pagenum < 1 ){ return } 
	
	this.prev_page = basename + '/' + (pagenum - 1);
	
	var portletLink = mw.util.addPortletLink( 'p-tb', '#',
			'Prev. page {{nop}}', 't-check-prev-page-nop', 'Check if the previous page ends in a newline-{{nop}}.'
	);
	
	$( portletLink ).click( function ( e ) {
		e.preventDefault();
		myself.get_raw_page(myself.prev_page, myself.check_nop);
	});
	
}

NopInserter.prototype.get_page_parts = function(data){
	//split up the page into header, body and footer
	var match = /<noinclude>([\s\S]*)<\/noinclude>([\s\S]*?)<noinclude>([\s\S]*)<\/noinclude>/m.exec(data);
	return match;
}

NopInserter.prototype.assemble_page_parts = function(parts){
	//re-assemble a page from the header, body and footer
	return '<noinclude>'+parts[1]+'</noinclude>'+parts[2]+'<noinclude>' + parts[3] +'</noinclude>';
}


NopInserter.prototype.check_nop = function(parts){
	var match = /\n{{[Nn][oO][pP]}}\s*$/.exec(parts[2]);
	
	if (match!==null){
		alert('Predefinição {{nop}} encontrada na página anterior.');
		this.go_to_page();
	} else {
		if (confirm('Nenhuma predefinição {{nop}} encontrada na página anterior. Adicionar uma?')) { 
			this.add_trailing_nop(parts);
		}
	}
}

NopInserter.prototype.add_trailing_nop = function(parts){

	parts[2] = parts[2].replace(/\s*$/i,'') + '\n{{nop}}'; //remove trailing space and add the nop
	
	var new_text = this.assemble_page_parts(parts);
	
	this.save_page(this.prev_page, new_text, 'A adicionar {{nop}} para quebra de parágrafo.');
}

NopInserter.prototype.get_raw_page = function(pagetitle, callback){
	var myself = this;
	
	//get the current page text
	$.ajax({
		url: mw.util.wikiScript( 'index' ),
		data: {
			action: 'raw',
			title: pagetitle,
		},
		cache:false,
		success:function(data){
			var parts = myself.get_page_parts(data);
			$.proxy(callback, myself)(parts);
		},
		error:function(jqXHR, textStatus, errorThrown){
			alert('Não foi possível carrecar a página anterior: [[' + pagetitle + ']]');
		},
	});
}
		
NopInserter.prototype.save_page = function(title, content, summary){
	var myself = this;
	
	$.ajax({
		url: mw.util.wikiScript( 'api' ),
		data: {
			format: 'json',
			action: 'edit',
			title: title,
			summary: summary,
			text: content,
			token: mw.user.tokens.get( 'csrfToken' )
		},
		dataType: 'json',
		type: 'POST',
		success: function( data ) {
			if ( data && data.edit && data.edit.result == 'Success' ) {
				$('#ca-prev').css({'outline':'2px solid green'});
				setTimeout(function() {
					$('#ca-prev').css({'outline':''});
				}, 2000);
				
				this.go_to_page();
				
			} else if ( data && data.error ) {
				alert( 'Error: API returned error code "' + data.error.code + '": ' + data.error.info );
			} else {
				alert( 'Erro: Resultado da API desconhecido.' );
			}
		},
		error: function( xhr ) {
			$.alert( 'Erro: Falha na solicitação.' );
		}
	});
}

NopInserter.prototype.go_to_page = function(){
//go to the previous page if the user's options specify to do so
	if ( mw.user.options.exists( 'nopinserter_auto_advance' ) && mw.user.options.get('nopinserter_auto_advance') ){
		window.location  = mw.config.get('wgArticlePath').replace('$1', this.prev_page);
	}
}

$(document).ready( function(){
	if( mw.config.get( 'wgNamespaceNumber' ) == 106 ) { //pagespace only
		var NopInserterInstance = new NopInserter(96);
	}
});