wp-includes/js/codepress/engines/msie.js

   1 /*
   2  * CodePress - Real Time Syntax Highlighting Editor written in JavaScript - http://codepress.org/
   3  *
   4  * Copyright (C) 2007 Fernando M.A.d.S. <fermads@gmail.com>
   5  *
   6  * Developers:
   7  *              Fernando M.A.d.S. <fermads@gmail.com>
   8  *              Michael Hurni <michael.hurni@gmail.com>
   9  * Contributors:
  10  *              Martin D. Kirk
  11  *
  12  * This program is free software; you can redistribute it and/or modify it under the terms of the
  13  * GNU Lesser General Public License as published by the Free Software Foundation.
  14  *
  15  * Read the full licence: http://www.opensource.org/licenses/lgpl-license.php
  16  */
  17
  18 CodePress = {
  19         scrolling : false,
  20         autocomplete : true,
  21
  22         // set initial vars and start sh
  23         initialize : function() {
  24                 if(typeof(editor)=='undefined' && !arguments[0]) return;
  25                 chars = '|32|46|62|'; // charcodes that trigger syntax highlighting
  26                 cc = '\u2009'; // carret char
  27                 editor = document.getElementsByTagName('pre')[0];
  28                 editor.contentEditable = 'true';
  29                 document.getElementsByTagName('body')[0].onfocus = function() {editor.focus();}
  30                 document.attachEvent('onkeydown', this.metaHandler);
  31                 document.attachEvent('onkeypress', this.keyHandler);
  32                 window.attachEvent('onscroll', function() { if(!CodePress.scrolling) setTimeout(function(){CodePress.syntaxHighlight('scroll')},1)});
  33                 completeChars = this.getCompleteChars();
  34                 completeEndingChars =  this.getCompleteEndingChars();
  35                 setTimeout(function() { window.scroll(0,0) },50); // scroll IE to top
  36         },
  37
  38         // treat key bindings
  39         keyHandler : function(evt) {
  40                 charCode = evt.keyCode;
  41                 fromChar = String.fromCharCode(charCode);
  42
  43                 if( (completeEndingChars.indexOf('|'+fromChar+'|')!= -1 || completeChars.indexOf('|'+fromChar+'|')!=-1  )&& CodePress.autocomplete) { // auto complete
  44                         if(!CodePress.completeEnding(fromChar))
  45                              CodePress.complete(fromChar);
  46                 }
  47             else if(chars.indexOf('|'+charCode+'|')!=-1||charCode==13) { // syntax highlighting
  48                         CodePress.syntaxHighlight('generic');
  49                 }
  50         },
  51
  52         metaHandler : function(evt) {
  53                 keyCode = evt.keyCode;
  54
  55                 if(keyCode==9 || evt.tabKey) {
  56                         CodePress.snippets();
  57                 }
  58                 else if((keyCode==122||keyCode==121||keyCode==90) && evt.ctrlKey) { // undo and redo
  59                         (keyCode==121||evt.shiftKey) ? CodePress.actions.redo() :  CodePress.actions.undo();
  60                         evt.returnValue = false;
  61                 }
  62                 else if(keyCode==34||keyCode==33) { // handle page up/down for IE
  63                         self.scrollBy(0, (keyCode==34) ? 200 : -200);
  64                         evt.returnValue = false;
  65                 }
  66                 else if(keyCode==46||keyCode==8) { // save to history when delete or backspace pressed
  67                         CodePress.actions.history[CodePress.actions.next()] = editor.innerHTML;
  68                 }
  69                 else if((evt.ctrlKey || evt.metaKey) && evt.shiftKey && keyCode!=90)  { // shortcuts = ctrl||appleKey+shift+key!=z(undo)
  70                         CodePress.shortcuts(keyCode);
  71                         evt.returnValue = false;
  72                 }
  73                 else if(keyCode==86 && evt.ctrlKey)  { // handle paste
  74                         window.clipboardData.setData('Text',window.clipboardData.getData('Text').replace(/\t/g,'\u2008'));
  75                         top.setTimeout(function(){CodePress.syntaxHighlight('paste');},10);
  76                 }
  77                 else if(keyCode==67 && evt.ctrlKey)  { // handle cut
  78                         // window.clipboardData.setData('Text',x[0]);
  79                         // code = window.clipboardData.getData('Text');
  80                 }
  81         },
  82
  83         // put cursor back to its original position after every parsing
  84
  85
  86         findString : function() {
  87                 range = self.document.body.createTextRange();
  88                 if(range.findText(cc)){
  89                         range.select();
  90                         range.text = '';
  91                 }
  92         },
  93
  94         // split big files, highlighting parts of it
  95         split : function(code,flag) {
  96                 if(flag=='scroll') {
  97                         this.scrolling = true;
  98                         return code;
  99                 }
 100                 else {
 101                         this.scrolling = false;
 102                         mid = code.indexOf(cc);
 103                         if(mid-2000<0) {ini=0;end=4000;}
 104                         else if(mid+2000>code.length) {ini=code.length-4000;end=code.length;}
 105                         else {ini=mid-2000;end=mid+2000;}
 106                         code = code.substring(ini,end);
 107                         return code.substring(code.indexOf('<P>'),code.lastIndexOf('</P>')+4);
 108                 }
 109         },
 110
 111         // syntax highlighting parser
 112         syntaxHighlight : function(flag) {
 113                 if(flag!='init') document.selection.createRange().text = cc;
 114                 o = editor.innerHTML;
 115                 if(flag=='paste') { // fix pasted text
 116                         o = o.replace(/<BR>/g,'\r\n');
 117                         o = o.replace(/\u2008/g,'\t');
 118                 }
 119                 o = o.replace(/<P>/g,'\n');
 120                 o = o.replace(/<\/P>/g,'\r');
 121                 o = o.replace(/<.*?>/g,'');
 122                 o = o.replace(/&nbsp;/g,'');
 123                 o = '<PRE><P>'+o+'</P></PRE>';
 124                 o = o.replace(/\n\r/g,'<P></P>');
 125                 o = o.replace(/\n/g,'<P>');
 126                 o = o.replace(/\r/g,'<\/P>');
 127                 o = o.replace(/<P>(<P>)+/,'<P>');
 128                 o = o.replace(/<\/P>(<\/P>)+/,'</P>');
 129                 o = o.replace(/<P><\/P>/g,'<P><BR/></P>');
 130                 x = z = this.split(o,flag);
 131
 132                 if(arguments[1]&&arguments[2]) x = x.replace(arguments[1],arguments[2]);
 133
 134                 for(i=0;i<Language.syntax.length;i++)
 135                         x = x.replace(Language.syntax[i].input,Language.syntax[i].output);
 136
 137                 editor.innerHTML = this.actions.history[this.actions.next()] = (flag=='scroll') ? x : o.replace(z,x);
 138                 if(flag!='init') this.findString();
 139         },
 140
 141         snippets : function(evt) {
 142                 var snippets = Language.snippets;
 143                 var trigger = this.getLastWord();
 144                 for (var i=0; i<snippets.length; i++) {
 145                         if(snippets[i].input == trigger) {
 146                                 var content = snippets[i].output.replace(/</g,'&lt;');
 147                                 content = content.replace(/>/g,'&gt;');
 148                                 if(content.indexOf('$0')<0) content += cc;
 149                                 else content = content.replace(/\$0/,cc);
 150                                 content = content.replace(/\n/g,'</P><P>');
 151                                 var pattern = new RegExp(trigger+cc,"gi");
 152                                 this.syntaxHighlight('snippets',pattern,content);
 153                         }
 154                 }
 155         },
 156
 157         readOnly : function() {
 158                 editor.contentEditable = (arguments[0]) ? 'false' : 'true';
 159         },
 160
 161         complete : function(trigger) {
 162                 var complete = Language.complete;
 163                 for (var i=0; i<complete.length; i++) {
 164                         if(complete[i].input == trigger) {
 165                                 var pattern = new RegExp('\\'+trigger+cc);
 166                                 var content = complete[i].output.replace(/\$0/g,cc);
 167                                 setTimeout(function () { CodePress.syntaxHighlight('complete',pattern,content)},0); // wait for char to appear on screen
 168                         }
 169                 }
 170         },
 171
 172         getCompleteChars : function() {
 173                 var cChars = '';
 174                 for(var i=0;i<Language.complete.length;i++)
 175                         cChars += '|'+Language.complete[i].input;
 176                 return cChars+'|';
 177         },
 178
 179         getCompleteEndingChars : function() {
 180                 var cChars = '';
 181                 for(var i=0;i<Language.complete.length;i++)
 182                         cChars += '|'+Language.complete[i].output.charAt(Language.complete[i].output.length-1);
 183                 return cChars+'|';
 184         },
 185
 186         completeEnding : function(trigger) {
 187                 var range = document.selection.createRange();
 188                 try {
 189                         range.moveEnd('character', 1)
 190                 }
 191                 catch(e) {
 192                         return false;
 193                 }
 194                 var next_character = range.text
 195                 range.moveEnd('character', -1)
 196                 if(next_character != trigger )  return false;
 197                 else {
 198                         range.moveEnd('character', 1)
 199                         range.text=''
 200                         return true;
 201                 }
 202         },
 203
 204         shortcuts : function() {
 205                 var cCode = arguments[0];
 206                 if(cCode==13) cCode = '[enter]';
 207                 else if(cCode==32) cCode = '[space]';
 208                 else cCode = '['+String.fromCharCode(keyCode).toLowerCase()+']';
 209                 for(var i=0;i<Language.shortcuts.length;i++)
 210                         if(Language.shortcuts[i].input == cCode)
 211                                 this.insertCode(Language.shortcuts[i].output,false);
 212         },
 213
 214         getLastWord : function() {
 215                 var rangeAndCaret = CodePress.getRangeAndCaret();
 216                 words = rangeAndCaret[0].substring(rangeAndCaret[1]-40,rangeAndCaret[1]);
 217                 words = words.replace(/[\s\n\r\);\W]/g,'\n').split('\n');
 218                 return words[words.length-1].replace(/[\W]/gi,'').toLowerCase();
 219         },
 220
 221         getRangeAndCaret : function() {
 222                 var range = document.selection.createRange();
 223                 var caret = Math.abs(range.moveStart('character', -1000000)+1);
 224                 range = this.getCode();
 225                 range = range.replace(/\n\r/gi,'  ');
 226                 range = range.replace(/\n/gi,'');
 227                 return [range.toString(),caret];
 228         },
 229
 230         insertCode : function(code,replaceCursorBefore) {
 231                 var repdeb = '';
 232                 var repfin = '';
 233
 234                 if(replaceCursorBefore) { repfin = code; }
 235                 else { repdeb = code; }
 236
 237                 if(typeof document.selection != 'undefined') {
 238                         var range = document.selection.createRange();
 239                         range.text = repdeb + repfin;
 240                         range = document.selection.createRange();
 241                         range.move('character', -repfin.length);
 242                         range.select();
 243                 }
 244         },
 245
 246         // get code from editor
 247         getCode : function() {
 248                 var code = editor.innerHTML;
 249                 code = code.replace(/<br>/g,'\n');
 250                 code = code.replace(/<\/p>/gi,'\r');
 251                 code = code.replace(/<p>/i,''); // IE first line fix
 252                 code = code.replace(/<p>/gi,'\n');
 253                 code = code.replace(/&nbsp;/gi,'');
 254                 code = code.replace(/\u2009/g,'');
 255                 code = code.replace(/<.*?>/g,'');
 256                 code = code.replace(/&lt;/g,'<');
 257                 code = code.replace(/&gt;/g,'>');
 258                 code = code.replace(/&amp;/gi,'&');
 259                 return code;
 260         },
 261
 262         // put code inside editor
 263         setCode : function() {
 264                 var code = arguments[0];
 265                 code = code.replace(/\u2009/gi,'');
 266                 code = code.replace(/&/gi,'&amp;');
 267         code = code.replace(/</g,'&lt;');
 268         code = code.replace(/>/g,'&gt;');
 269                 editor.innerHTML = '<pre>'+code+'</pre>';
 270         },
 271
 272
 273         // undo and redo methods
 274         actions : {
 275                 pos : -1, // actual history position
 276                 history : [], // history vector
 277
 278                 undo : function() {
 279                         if(editor.innerHTML.indexOf(cc)==-1){
 280                                 document.selection.createRange().text = cc;
 281                                 this.history[this.pos] = editor.innerHTML;
 282                         }
 283                         this.pos--;
 284                         if(typeof(this.history[this.pos])=='undefined') this.pos++;
 285                         editor.innerHTML = this.history[this.pos];
 286                         CodePress.findString();
 287                 },
 288
 289                 redo : function() {
 290                         this.pos++;
 291                         if(typeof(this.history[this.pos])=='undefined') this.pos--;
 292                         editor.innerHTML = this.history[this.pos];
 293                         CodePress.findString();
 294                 },
 295
 296                 next : function() { // get next vector position and clean old ones
 297                         if(this.pos>20) this.history[this.pos-21] = undefined;
 298                         return ++this.pos;
 299                 }
 300         }
 301 }
 302
 303 Language={};
 304 window.attachEvent('onload', function() { CodePress.initialize('new');});