codepress/engines/opera.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  * Contributors :
   7  *
   8  *      Michael Hurni <michael.hurni@gmail.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it under the terms of the
  11  * GNU Lesser General Public License as published by the Free Software Foundation.
  12  *
  13  * Read the full licence: http://www.opensource.org/licenses/lgpl-license.php
  14  */
  15
  16
  17 CodePress = {
  18         scrolling : false,
  19         autocomplete : true,
  20
  21         // set initial vars and start sh
  22         initialize : function() {
  23                 if(typeof(editor)=='undefined' && !arguments[0]) return;
  24                 chars = '|32|46|62|'; // charcodes that trigger syntax highlighting
  25                 cc = '\u2009'; // control char
  26                 editor = document.getElementsByTagName('body')[0];
  27                 document.designMode = 'on';
  28                 document.addEventListener('keyup', this.keyHandler, true);
  29                 window.addEventListener('scroll', function() { if(!CodePress.scrolling) CodePress.syntaxHighlight('scroll') }, false);
  30                 completeChars = this.getCompleteChars();
  31 //              CodePress.syntaxHighlight('init');
  32         },
  33
  34         // treat key bindings
  35         keyHandler : function(evt) {
  36         keyCode = evt.keyCode;
  37                 charCode = evt.charCode;
  38
  39                 if((evt.ctrlKey || evt.metaKey) && evt.shiftKey && charCode!=90)  { // shortcuts = ctrl||appleKey+shift+key!=z(undo)
  40                         CodePress.shortcuts(charCode?charCode:keyCode);
  41                 }
  42                 else if(completeChars.indexOf('|'+String.fromCharCode(charCode)+'|')!=-1 && CodePress.autocomplete) { // auto complete
  43                         CodePress.complete(String.fromCharCode(charCode));
  44                 }
  45             else if(chars.indexOf('|'+charCode+'|')!=-1||keyCode==13) { // syntax highlighting
  46                         CodePress.syntaxHighlight('generic');
  47                 }
  48                 else if(keyCode==9 || evt.tabKey) {  // snippets activation (tab)
  49                         CodePress.snippets(evt);
  50                 }
  51                 else if(keyCode==46||keyCode==8) { // save to history when delete or backspace pressed
  52                         CodePress.actions.history[CodePress.actions.next()] = editor.innerHTML;
  53                 }
  54                 else if((charCode==122||charCode==121||charCode==90) && evt.ctrlKey) { // undo and redo
  55                         (charCode==121||evt.shiftKey) ? CodePress.actions.redo() :  CodePress.actions.undo();
  56                         evt.preventDefault();
  57                 }
  58                 else if(keyCode==86 && evt.ctrlKey)  { // paste
  59                         // TODO: pasted text should be parsed and highlighted
  60                 }
  61         },
  62
  63         // put cursor back to its original position after every parsing
  64         findString : function() {
  65                 var sel = window.getSelection();
  66                 var range = window.document.createRange();
  67                 var span = window.document.getElementsByTagName('span')[0];
  68
  69                 range.selectNode(span);
  70                 sel.removeAllRanges();
  71                 sel.addRange(range);
  72                 span.parentNode.removeChild(span);
  73                 //if(self.find(cc))
  74                 //window.getSelection().getRangeAt(0).deleteContents();
  75         },
  76
  77         // split big files, highlighting parts of it
  78         split : function(code,flag) {
  79                 if(flag=='scroll') {
  80                         this.scrolling = true;
  81                         return code;
  82                 }
  83                 else {
  84                         this.scrolling = false;
  85                         mid = code.indexOf('<SPAN>');
  86                         if(mid-2000<0) {ini=0;end=4000;}
  87                         else if(mid+2000>code.length) {ini=code.length-4000;end=code.length;}
  88                         else {ini=mid-2000;end=mid+2000;}
  89                         code = code.substring(ini,end);
  90                         return code;
  91                 }
  92         },
  93
  94         // syntax highlighting parser
  95         syntaxHighlight : function(flag) {
  96                 //if(document.designMode=='off') document.designMode='on'
  97                 if(flag!='init') {
  98                         var span = document.createElement('span');
  99                         window.getSelection().getRangeAt(0).insertNode(span);
 100                 }
 101
 102                 o = editor.innerHTML;
 103 //              o = o.replace(/<br>/g,'\r\n');
 104 //              o = o.replace(/<(b|i|s|u|a|em|tt|ins|big|cite|strong)?>/g,'');
 105                 //alert(o)
 106                 o = o.replace(/<(?!span|\/span|br).*?>/gi,'');
 107 //              alert(o)
 108 //              x = o;
 109                 x = z = this.split(o,flag);
 110                 //alert(z)
 111 //              x = x.replace(/\r\n/g,'<br>');
 112                 x = x.replace(/\t/g, '        ');
 113
 114
 115                 if(arguments[1]&&arguments[2]) x = x.replace(arguments[1],arguments[2]);
 116
 117                 for(i=0;i<Language.syntax.length;i++)
 118                         x = x.replace(Language.syntax[i].input,Language.syntax[i].output);
 119
 120                 editor.innerHTML = this.actions.history[this.actions.next()] = (flag=='scroll') ? x : o.split(z).join(x);
 121
 122                 if(flag!='init') this.findString();
 123         },
 124
 125         getLastWord : function() {
 126                 var rangeAndCaret = CodePress.getRangeAndCaret();
 127                 words = rangeAndCaret[0].substring(rangeAndCaret[1]-40,rangeAndCaret[1]);
 128                 words = words.replace(/[\s\n\r\);\W]/g,'\n').split('\n');
 129                 return words[words.length-1].replace(/[\W]/gi,'').toLowerCase();
 130         },
 131
 132         snippets : function(evt) {
 133                 var snippets = Language.snippets;
 134                 var trigger = this.getLastWord();
 135                 for (var i=0; i<snippets.length; i++) {
 136                         if(snippets[i].input == trigger) {
 137                                 var content = snippets[i].output.replace(/</g,'&lt;');
 138                                 content = content.replace(/>/g,'&gt;');
 139                                 if(content.indexOf('$0')<0) content += cc;
 140                                 else content = content.replace(/\$0/,cc);
 141                                 content = content.replace(/\n/g,'<br>');
 142                                 var pattern = new RegExp(trigger+cc,'gi');
 143                                 evt.preventDefault(); // prevent the tab key from being added
 144                                 this.syntaxHighlight('snippets',pattern,content);
 145                         }
 146                 }
 147         },
 148
 149         readOnly : function() {
 150                 document.designMode = (arguments[0]) ? 'off' : 'on';
 151         },
 152
 153         complete : function(trigger) {
 154                 window.getSelection().getRangeAt(0).deleteContents();
 155                 var complete = Language.complete;
 156                 for (var i=0; i<complete.length; i++) {
 157                         if(complete[i].input == trigger) {
 158                                 var pattern = new RegExp('\\'+trigger+cc);
 159                                 var content = complete[i].output.replace(/\$0/g,cc);
 160                                 parent.setTimeout(function () { CodePress.syntaxHighlight('complete',pattern,content)},0); // wait for char to appear on screen
 161                         }
 162                 }
 163         },
 164
 165         getCompleteChars : function() {
 166                 var cChars = '';
 167                 for(var i=0;i<Language.complete.length;i++)
 168                         cChars += '|'+Language.complete[i].input;
 169                 return cChars+'|';
 170         },
 171
 172         shortcuts : function() {
 173                 var cCode = arguments[0];
 174                 if(cCode==13) cCode = '[enter]';
 175                 else if(cCode==32) cCode = '[space]';
 176                 else cCode = '['+String.fromCharCode(charCode).toLowerCase()+']';
 177                 for(var i=0;i<Language.shortcuts.length;i++)
 178                         if(Language.shortcuts[i].input == cCode)
 179                                 this.insertCode(Language.shortcuts[i].output,false);
 180         },
 181
 182         getRangeAndCaret : function() {
 183                 var range = window.getSelection().getRangeAt(0);
 184                 var range2 = range.cloneRange();
 185                 var node = range.endContainer;
 186                 var caret = range.endOffset;
 187                 range2.selectNode(node);
 188                 return [range2.toString(),caret];
 189         },
 190
 191         insertCode : function(code,replaceCursorBefore) {
 192                 var range = window.getSelection().getRangeAt(0);
 193                 var node = window.document.createTextNode(code);
 194                 var selct = window.getSelection();
 195                 var range2 = range.cloneRange();
 196                 // Insert text at cursor position
 197                 selct.removeAllRanges();
 198                 range.deleteContents();
 199                 range.insertNode(node);
 200                 // Move the cursor to the end of text
 201                 range2.selectNode(node);
 202                 range2.collapse(replaceCursorBefore);
 203                 selct.removeAllRanges();
 204                 selct.addRange(range2);
 205         },
 206
 207         // get code from editor
 208         getCode : function() {
 209                 var code = editor.innerHTML;
 210                 code = code.replace(/<br>/g,'\n');
 211                 code = code.replace(/\u2009/g,'');
 212                 code = code.replace(/<.*?>/g,'');
 213                 code = code.replace(/&lt;/g,'<');
 214                 code = code.replace(/&gt;/g,'>');
 215                 code = code.replace(/&amp;/gi,'&');
 216                 return code;
 217         },
 218
 219         // put code inside editor
 220         setCode : function() {
 221                 var code = arguments[0];
 222                 code = code.replace(/\u2009/gi,'');
 223                 code = code.replace(/&/gi,'&amp;');
 224         code = code.replace(/</g,'&lt;');
 225         code = code.replace(/>/g,'&gt;');
 226                 editor.innerHTML = code;
 227         },
 228
 229         // undo and redo methods
 230         actions : {
 231                 pos : -1, // actual history position
 232                 history : [], // history vector
 233
 234                 undo : function() {
 235                         if(editor.innerHTML.indexOf(cc)==-1){
 236                                 window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc));
 237                                 this.history[this.pos] = editor.innerHTML;
 238                         }
 239                         this.pos--;
 240                         if(typeof(this.history[this.pos])=='undefined') this.pos++;
 241                         editor.innerHTML = this.history[this.pos];
 242                         CodePress.findString();
 243                 },
 244
 245                 redo : function() {
 246                         this.pos++;
 247                         if(typeof(this.history[this.pos])=='undefined') this.pos--;
 248                         editor.innerHTML = this.history[this.pos];
 249                         CodePress.findString();
 250                 },
 251
 252                 next : function() { // get next vector position and clean old ones
 253                         if(this.pos>20) this.history[this.pos-21] = undefined;
 254                         return ++this.pos;
 255                 }
 256         }
 257 }
 258
 259 Language={};
 260 window.addEventListener('load', function() { CodePress.initialize('new'); }, true);