|
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(/ /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,'<'); |
|
147 content = content.replace(/>/g,'>'); |
|
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(/ /gi,''); |
|
254 code = code.replace(/\u2009/g,''); |
|
255 code = code.replace(/<.*?>/g,''); |
|
256 code = code.replace(/</g,'<'); |
|
257 code = code.replace(/>/g,'>'); |
|
258 code = code.replace(/&/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,'&'); |
|
267 code = code.replace(/</g,'<'); |
|
268 code = code.replace(/>/g,'>'); |
|
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');}); |