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        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