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 18CodePress = { 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 body = document.getElementsByTagName('body')[0]; 26 body.innerHTML = body.innerHTML.replace(/\n/g,""); 27 chars = '|32|46|62|8|'; // charcodes that trigger syntax highlighting 28 cc = '\u2009'; // carret char 29 editor = document.getElementsByTagName('pre')[0]; 30 document.designMode = 'on'; 31 document.addEventListener('keypress', this.keyHandler, true); 32 window.addEventListener('scroll', function() { if(!CodePress.scrolling) CodePress.syntaxHighlight('scroll') }, false); 33 completeChars = this.getCompleteChars(); 34 completeEndingChars = this.getCompleteEndingChars(); 35 }, 36 37 // treat key bindings 38 keyHandler : function(evt) { 39 keyCode = evt.keyCode; 40 charCode = evt.charCode; 41 fromChar = String.fromCharCode(charCode); 42 43 if((evt.ctrlKey || evt.metaKey) && evt.shiftKey && charCode!=90) { // shortcuts = ctrl||appleKey+shift+key!=z(undo) 44 CodePress.shortcuts(charCode?charCode:keyCode); 45 } 46 else if( (completeEndingChars.indexOf('|'+fromChar+'|')!= -1 || completeChars.indexOf('|'+fromChar+'|')!=-1) && CodePress.autocomplete) { // auto complete 47 if(!CodePress.completeEnding(fromChar)) 48 CodePress.complete(fromChar); 49 } 50 else if(chars.indexOf('|'+charCode+'|')!=-1||keyCode==13) { // syntax highlighting 51 top.setTimeout(function(){CodePress.syntaxHighlight('generic');},100); 52 } 53 else if(keyCode==9 || evt.tabKey) { // snippets activation (tab) 54 CodePress.snippets(evt); 55 } 56 else if(keyCode==46||keyCode==8) { // save to history when delete or backspace pressed 57 CodePress.actions.history[CodePress.actions.next()] = editor.innerHTML; 58 } 59 else if((charCode==122||charCode==121||charCode==90) && evt.ctrlKey) { // undo and redo 60 (charCode==121||evt.shiftKey) ? CodePress.actions.redo() : CodePress.actions.undo(); 61 evt.preventDefault(); 62 } 63 else if(charCode==118 && evt.ctrlKey) { // handle paste 64 top.setTimeout(function(){CodePress.syntaxHighlight('generic');},100); 65 } 66 else if(charCode==99 && evt.ctrlKey) { // handle cut 67 //alert(window.getSelection().getRangeAt(0).toString().replace(/\t/g,'FFF')); 68 } 69 70 }, 71 72 // put cursor back to its original position after every parsing 73 findString : function() { 74 if(self.find(cc)) 75 window.getSelection().getRangeAt(0).deleteContents(); 76 }, 77 78 // split big files, highlighting parts of it 79 split : function(code,flag) { 80 if(flag=='scroll') { 81 this.scrolling = true; 82 return code; 83 } 84 else { 85 this.scrolling = false; 86 mid = code.indexOf(cc); 87 if(mid-2000<0) {ini=0;end=4000;} 88 else if(mid+2000>code.length) {ini=code.length-4000;end=code.length;} 89 else {ini=mid-2000;end=mid+2000;} 90 code = code.substring(ini,end); 91 return code; 92 } 93 }, 94 95 getEditor : function() { 96 if(!document.getElementsByTagName('pre')[0]) { 97 body = document.getElementsByTagName('body')[0]; 98 if(!body.innerHTML) return body; 99 if(body.innerHTML=="<br>") body.innerHTML = "<pre> </pre>"; 100 else body.innerHTML = "<pre>"+body.innerHTML+"</pre>"; 101 } 102 return document.getElementsByTagName('pre')[0]; 103 }, 104 105 // syntax highlighting parser 106 syntaxHighlight : function(flag) { 107 //if(document.designMode=='off') document.designMode='on' 108 if(flag != 'init') { window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc));} 109 editor = CodePress.getEditor(); 110 o = editor.innerHTML; 111 o = o.replace(/<br>/g,'\n'); 112 o = o.replace(/<.*?>/g,''); 113 x = z = this.split(o,flag); 114 x = x.replace(/\n/g,'<br>'); 115 116 if(arguments[1]&&arguments[2]) x = x.replace(arguments[1],arguments[2]); 117 118 for(i=0;i<Language.syntax.length;i++) 119 x = x.replace(Language.syntax[i].input,Language.syntax[i].output); 120 121 editor.innerHTML = this.actions.history[this.actions.next()] = (flag=='scroll') ? x : o.split(z).join(x); 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,'<'); 138 content = content.replace(/>/g,'>'); 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 getCompleteEndingChars : function() { 173 var cChars = ''; 174 for(var i=0;i<Language.complete.length;i++) 175 cChars += '|'+Language.complete[i].output.charAt(Language.complete[i].output.length-1); 176 return cChars+'|'; 177 }, 178 179 completeEnding : function(trigger) { 180 var range = window.getSelection().getRangeAt(0); 181 try { 182 range.setEnd(range.endContainer, range.endOffset+1) 183 } 184 catch(e) { 185 return false; 186 } 187 var next_character = range.toString() 188 range.setEnd(range.endContainer, range.endOffset-1) 189 if(next_character != trigger) return false; 190 else { 191 range.setEnd(range.endContainer, range.endOffset+1) 192 range.deleteContents(); 193 return true; 194 } 195 }, 196 197 shortcuts : function() { 198 var cCode = arguments[0]; 199 if(cCode==13) cCode = '[enter]'; 200 else if(cCode==32) cCode = '[space]'; 201 else cCode = '['+String.fromCharCode(charCode).toLowerCase()+']'; 202 for(var i=0;i<Language.shortcuts.length;i++) 203 if(Language.shortcuts[i].input == cCode) 204 this.insertCode(Language.shortcuts[i].output,false); 205 }, 206 207 getRangeAndCaret : function() { 208 var range = window.getSelection().getRangeAt(0); 209 var range2 = range.cloneRange(); 210 var node = range.endContainer; 211 var caret = range.endOffset; 212 range2.selectNode(node); 213 return [range2.toString(),caret]; 214 }, 215 216 insertCode : function(code,replaceCursorBefore) { 217 var range = window.getSelection().getRangeAt(0); 218 var node = window.document.createTextNode(code); 219 var selct = window.getSelection(); 220 var range2 = range.cloneRange(); 221 // Insert text at cursor position 222 selct.removeAllRanges(); 223 range.deleteContents(); 224 range.insertNode(node); 225 // Move the cursor to the end of text 226 range2.selectNode(node); 227 range2.collapse(replaceCursorBefore); 228 selct.removeAllRanges(); 229 selct.addRange(range2); 230 }, 231 232 // get code from editor 233 getCode : function() { 234 if(!document.getElementsByTagName('pre')[0] || editor.innerHTML == '') 235 editor = CodePress.getEditor(); 236 var code = editor.innerHTML; 237 code = code.replace(/<br>/g,'\n'); 238 code = code.replace(/\u2009/g,''); 239 code = code.replace(/<.*?>/g,''); 240 code = code.replace(/</g,'<'); 241 code = code.replace(/>/g,'>'); 242 code = code.replace(/&/gi,'&'); 243 return code; 244 }, 245 246 // put code inside editor 247 setCode : function() { 248 var code = arguments[0]; 249 code = code.replace(/\u2009/gi,''); 250 code = code.replace(/&/gi,'&'); 251 code = code.replace(/</g,'<'); 252 code = code.replace(/>/g,'>'); 253 editor.innerHTML = code; 254 if (code == '') 255 document.getElementsByTagName('body')[0].innerHTML = ''; 256 }, 257 258 // undo and redo methods 259 actions : { 260 pos : -1, // actual history position 261 history : [], // history vector 262 263 undo : function() { 264 editor = CodePress.getEditor(); 265 if(editor.innerHTML.indexOf(cc)==-1){ 266 if(editor.innerHTML != " ") 267 window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc)); 268 this.history[this.pos] = editor.innerHTML; 269 } 270 this.pos --; 271 if(typeof(this.history[this.pos])=='undefined') this.pos ++; 272 editor.innerHTML = this.history[this.pos]; 273 if(editor.innerHTML.indexOf(cc)>-1) editor.innerHTML+=cc; 274 CodePress.findString(); 275 }, 276 277 redo : function() { 278 // editor = CodePress.getEditor(); 279 this.pos++; 280 if(typeof(this.history[this.pos])=='undefined') this.pos--; 281 editor.innerHTML = this.history[this.pos]; 282 CodePress.findString(); 283 }, 284 285 next : function() { // get next vector position and clean old ones 286 if(this.pos>20) this.history[this.pos-21] = undefined; 287 return ++this.pos; 288 } 289 } 290} 291 292Language={}; 293window.addEventListener('load', function() { CodePress.initialize('new'); }, true);