User:Magnus Manske/tmpl.js

Code that you insert on this page could contain malicious content capable of compromising your account. If you import a script from another page with "importScript", "mw.loader.load", "iusc", or "lusc", take note that this causes you to dynamically load a remote script, which could be changed by others. Editors are responsible for all edits and actions they perform, including by scripts. User scripts are not centrally supported and may malfunction or become inoperable due to software changes. A guide to help you find broken scripts is available. If you are unsure whether code you are adding to this page is safe, you can ask at the appropriate village pump.
This code will be executed when previewing this page.

Documentation for this user script can be added at User:Magnus Manske/tmpl.

Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.

// <nowiki><pre>
if ( ( mw.config.get('wgAction') == "submit" || mw.config.get('wgAction') == "edit" ) && mw.config.get('wgNamespaceNumber') == 0 ) {
  addOnloadHook ( init_tmpl ) ;
}

var tmpl_active = 0 ;
var tmpl_original = '' ;
var tmpl_template_texts = new Array () ;
var tmpl_keys = new Array () ;

function init_tmpl () {
  tmpl_hook_button ( 'wpSave' ) ;
  tmpl_hook_button ( 'wpPreview' ) ;
  tmpl_hook_button ( 'wpDiff' ) ;
  tmpl_parse_textbox () ;
}

function tmpl_hook_button ( id ) {
  var b = document.getElementById ( id ) ;
  b.onclick = function () { tmpl_rejoin() ; return true ; } ;
}

function tmpl_rejoin () {
  if ( tmpl_active == 0 ) return ;
  var tb = document.getElementById('wpTextbox1') ;
  var all = tb.value ;
  for ( var akey in tmpl_keys ) {
    var key = tmpl_keys[akey] ;
    if ( null == key.match ( /^##TEMPLATE\d+:/ ) ) continue ;
    var text = tmpl_template_texts[akey] ;
    all = all.split(key).join("{{"+text+"}}");
  }
  tmpl_active = 0 ;
  tb.value = all ;
}

function tmpl_parse_textbox () {
  if ( tmpl_active == 1 ) return ;
  tmpl_active = 1 ;
  var tb = document.getElementById('wpTextbox1') ;
  tmpl_original = tb.value ;
  var tcnt = 0 ;
  var ts = '' ;
  var ns = '' ;
  var curt = 0 ;
  for ( var a = 0 ; a < tmpl_original.length ; a++ ) {
    if ( tmpl_original[a] == '{' && tmpl_original[a+1] == '{' ) {
      tcnt++ ;
      a++ ;
      if ( tcnt > 1 ) ts += '{{' ;
    } else if ( tmpl_original[a] == '}' && tmpl_original[a+1] == '}' ) {
      if ( tcnt > 1 ) ts += '}}' ;
      if ( tcnt > 0 ) tcnt-- ;
      if ( tcnt == 0 ) {
        if ( 1 == ts.split('\|').length ) { // Just a simple template, no parameters
          ns += "{{" + ts + "}}" ;
        } else {
          curt++ ;
          var tname = tmpl_get_template_name ( ts ) ;
          var key1 = "##TEMPLATE" + curt + ":" + tname + "##" ;
          tmpl_keys[curt] = key1 ;
          ns += key1 ;
          tmpl_template_texts[curt] = ts ;
        }
        ts = '' ;
      }
      a++ ;
    } else {
      if ( tcnt == 0 ) {
        ns += tmpl_original[a] ;
      } else {
        ts += tmpl_original[a] ;
      }
    }
  }
  tb.value = ns ;
  tb.ondblclick = tmpl_textbox_dblclick ;
}

function tmpl_get_template_name ( text ) {
  text = text.split('\|').shift() ;
  text = text.split('\{').shift() ;
  text = text.replace ( /\s+$/ , '' ) ;
  text = text.replace ( /^\s+/ , '' ) ;
  return text ;
}

function tmpl_textbox_dblclick () {
  var tb = document.getElementById('wpTextbox1') ;
  var len = tb.value.length;
  var start = tb.selectionStart-2;
  var end = tb.selectionEnd+1;
  if ( start < 0 ) return ;
  if ( end >= tb.value.length ) return ;
  var sel = tb.value.substring(start, end);

  if ( null == sel.match ( /^##TEMPLATE\d+:$/ ) ) return ;

  var num = sel.match ( /\d+/ ) ;
  var text = tmpl_template_texts[num] ;

  alert ( num + " stands for:\n" + text ) ;
}
// </pre></nowiki>