[44] | 1 | /*
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| 2 | * CodePress - Real Time Syntax Highlighting Editor written in JavaScript - http://codepress.org/
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| 3 | *
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| 4 | * Copyright (C) 2007 Fernando M.A.d.S. <fermads@gmail.com>
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| 5 | *
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| 6 | * Developers:
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| 7 | * Fernando M.A.d.S. <fermads@gmail.com>
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| 8 | * Michael Hurni <michael.hurni@gmail.com>
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| 9 | * Contributors:
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| 10 | * Martin D. Kirk
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or modify it under the terms of the
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| 13 | * GNU Lesser General Public License as published by the Free Software Foundation.
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| 14 | *
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| 15 | * Read the full licence: http://www.opensource.org/licenses/lgpl-license.php
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| 16 | */
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| 17 |
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| 18 | CodePress = {
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| 19 | scrolling : false,
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| 20 | autocomplete : true,
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| 21 |
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| 22 | // set initial vars and start sh
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| 23 | initialize : function() {
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| 24 | if(typeof(editor)=='undefined' && !arguments[0]) return;
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| 25 | body = document.getElementsByTagName('body')[0];
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| 26 | body.innerHTML = body.innerHTML.replace(/\n/g,"");
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| 27 | chars = '|32|46|62|8|'; // charcodes that trigger syntax highlighting
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| 28 | cc = '\u2009'; // carret char
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| 29 | editor = document.getElementsByTagName('pre')[0];
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| 30 | document.designMode = 'on';
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| 31 | document.addEventListener('keypress', this.keyHandler, true);
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| 32 | window.addEventListener('scroll', function() { if(!CodePress.scrolling) CodePress.syntaxHighlight('scroll') }, false);
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| 33 | completeChars = this.getCompleteChars();
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| 34 | completeEndingChars = this.getCompleteEndingChars();
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| 35 | },
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| 36 |
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| 37 | // treat key bindings
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| 38 | keyHandler : function(evt) {
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| 39 | keyCode = evt.keyCode;
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| 40 | charCode = evt.charCode;
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| 41 | fromChar = String.fromCharCode(charCode);
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| 42 |
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| 43 | if((evt.ctrlKey || evt.metaKey) && evt.shiftKey && charCode!=90) { // shortcuts = ctrl||appleKey+shift+key!=z(undo)
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| 44 | CodePress.shortcuts(charCode?charCode:keyCode);
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| 45 | }
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| 46 | else if( (completeEndingChars.indexOf('|'+fromChar+'|')!= -1 || completeChars.indexOf('|'+fromChar+'|')!=-1) && CodePress.autocomplete) { // auto complete
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| 47 | if(!CodePress.completeEnding(fromChar))
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| 48 | CodePress.complete(fromChar);
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| 49 | }
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| 50 | else if(chars.indexOf('|'+charCode+'|')!=-1||keyCode==13) { // syntax highlighting
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| 51 | top.setTimeout(function(){CodePress.syntaxHighlight('generic');},100);
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| 52 | }
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| 53 | else if(keyCode==9 || evt.tabKey) { // snippets activation (tab)
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| 54 | CodePress.snippets(evt);
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| 55 | }
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| 56 | else if(keyCode==46||keyCode==8) { // save to history when delete or backspace pressed
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| 57 | CodePress.actions.history[CodePress.actions.next()] = editor.innerHTML;
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| 58 | }
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| 59 | else if((charCode==122||charCode==121||charCode==90) && evt.ctrlKey) { // undo and redo
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| 60 | (charCode==121||evt.shiftKey) ? CodePress.actions.redo() : CodePress.actions.undo();
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| 61 | evt.preventDefault();
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| 62 | }
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| 63 | else if(charCode==118 && evt.ctrlKey) { // handle paste
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| 64 | top.setTimeout(function(){CodePress.syntaxHighlight('generic');},100);
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| 65 | }
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| 66 | else if(charCode==99 && evt.ctrlKey) { // handle cut
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| 67 | //alert(window.getSelection().getRangeAt(0).toString().replace(/\t/g,'FFF'));
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| 68 | }
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| 69 |
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| 70 | },
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| 71 |
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| 72 | // put cursor back to its original position after every parsing
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| 73 | findString : function() {
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| 74 | if(self.find(cc))
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| 75 | window.getSelection().getRangeAt(0).deleteContents();
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| 76 | },
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| 77 |
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| 78 | // split big files, highlighting parts of it
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| 79 | split : function(code,flag) {
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| 80 | if(flag=='scroll') {
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| 81 | this.scrolling = true;
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| 82 | return code;
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| 83 | }
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| 84 | else {
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| 85 | this.scrolling = false;
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| 86 | mid = code.indexOf(cc);
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| 87 | if(mid-2000<0) {ini=0;end=4000;}
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| 88 | else if(mid+2000>code.length) {ini=code.length-4000;end=code.length;}
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| 89 | else {ini=mid-2000;end=mid+2000;}
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| 90 | code = code.substring(ini,end);
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| 91 | return code;
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| 92 | }
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| 93 | },
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| 94 |
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| 95 | getEditor : function() {
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| 96 | if(!document.getElementsByTagName('pre')[0]) {
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| 97 | body = document.getElementsByTagName('body')[0];
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| 98 | if(!body.innerHTML) return body;
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| 99 | if(body.innerHTML=="<br>") body.innerHTML = "<pre> </pre>";
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| 100 | else body.innerHTML = "<pre>"+body.innerHTML+"</pre>";
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| 101 | }
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| 102 | return document.getElementsByTagName('pre')[0];
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| 103 | },
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| 104 |
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| 105 | // syntax highlighting parser
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| 106 | syntaxHighlight : function(flag) {
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| 107 | //if(document.designMode=='off') document.designMode='on'
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| 108 | if(flag != 'init') { window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc));}
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| 109 | editor = CodePress.getEditor();
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| 110 | o = editor.innerHTML;
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| 111 | o = o.replace(/<br>/g,'\n');
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| 112 | o = o.replace(/<.*?>/g,'');
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| 113 | x = z = this.split(o,flag);
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| 114 | x = x.replace(/\n/g,'<br>');
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| 115 |
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| 116 | if(arguments[1]&&arguments[2]) x = x.replace(arguments[1],arguments[2]);
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| 117 |
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| 118 | for(i=0;i<Language.syntax.length;i++)
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| 119 | x = x.replace(Language.syntax[i].input,Language.syntax[i].output);
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| 120 |
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| 121 | editor.innerHTML = this.actions.history[this.actions.next()] = (flag=='scroll') ? x : o.split(z).join(x);
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| 122 | if(flag!='init') this.findString();
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| 123 | },
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| 124 |
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| 125 | getLastWord : function() {
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| 126 | var rangeAndCaret = CodePress.getRangeAndCaret();
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| 127 | words = rangeAndCaret[0].substring(rangeAndCaret[1]-40,rangeAndCaret[1]);
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| 128 | words = words.replace(/[\s\n\r\);\W]/g,'\n').split('\n');
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| 129 | return words[words.length-1].replace(/[\W]/gi,'').toLowerCase();
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| 130 | },
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| 131 |
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| 132 | snippets : function(evt) {
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| 133 | var snippets = Language.snippets;
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| 134 | var trigger = this.getLastWord();
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| 135 | for (var i=0; i<snippets.length; i++) {
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| 136 | if(snippets[i].input == trigger) {
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| 137 | var content = snippets[i].output.replace(/</g,'<');
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| 138 | content = content.replace(/>/g,'>');
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| 139 | if(content.indexOf('$0')<0) content += cc;
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| 140 | else content = content.replace(/\$0/,cc);
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| 141 | content = content.replace(/\n/g,'<br>');
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| 142 | var pattern = new RegExp(trigger+cc,'gi');
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| 143 | evt.preventDefault(); // prevent the tab key from being added
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| 144 | this.syntaxHighlight('snippets',pattern,content);
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| 145 | }
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| 146 | }
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| 147 | },
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| 148 |
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| 149 | readOnly : function() {
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| 150 | document.designMode = (arguments[0]) ? 'off' : 'on';
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| 151 | },
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| 152 |
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| 153 | complete : function(trigger) {
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| 154 | window.getSelection().getRangeAt(0).deleteContents();
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| 155 | var complete = Language.complete;
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| 156 | for (var i=0; i<complete.length; i++) {
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| 157 | if(complete[i].input == trigger) {
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| 158 | var pattern = new RegExp('\\'+trigger+cc);
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| 159 | var content = complete[i].output.replace(/\$0/g,cc);
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| 160 | parent.setTimeout(function () { CodePress.syntaxHighlight('complete',pattern,content)},0); // wait for char to appear on screen
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| 161 | }
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| 162 | }
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| 163 | },
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| 164 |
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| 165 | getCompleteChars : function() {
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| 166 | var cChars = '';
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| 167 | for(var i=0;i<Language.complete.length;i++)
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| 168 | cChars += '|'+Language.complete[i].input;
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| 169 | return cChars+'|';
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| 170 | },
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| 171 |
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| 172 | getCompleteEndingChars : function() {
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| 173 | var cChars = '';
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| 174 | for(var i=0;i<Language.complete.length;i++)
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| 175 | cChars += '|'+Language.complete[i].output.charAt(Language.complete[i].output.length-1);
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| 176 | return cChars+'|';
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| 177 | },
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| 178 |
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| 179 | completeEnding : function(trigger) {
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| 180 | var range = window.getSelection().getRangeAt(0);
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| 181 | try {
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| 182 | range.setEnd(range.endContainer, range.endOffset+1)
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| 183 | }
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| 184 | catch(e) {
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| 185 | return false;
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| 186 | }
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| 187 | var next_character = range.toString()
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| 188 | range.setEnd(range.endContainer, range.endOffset-1)
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| 189 | if(next_character != trigger) return false;
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| 190 | else {
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| 191 | range.setEnd(range.endContainer, range.endOffset+1)
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| 192 | range.deleteContents();
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| 193 | return true;
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| 194 | }
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| 195 | },
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| 196 |
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| 197 | shortcuts : function() {
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| 198 | var cCode = arguments[0];
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| 199 | if(cCode==13) cCode = '[enter]';
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| 200 | else if(cCode==32) cCode = '[space]';
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| 201 | else cCode = '['+String.fromCharCode(charCode).toLowerCase()+']';
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| 202 | for(var i=0;i<Language.shortcuts.length;i++)
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| 203 | if(Language.shortcuts[i].input == cCode)
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| 204 | this.insertCode(Language.shortcuts[i].output,false);
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| 205 | },
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| 206 |
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| 207 | getRangeAndCaret : function() {
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| 208 | var range = window.getSelection().getRangeAt(0);
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| 209 | var range2 = range.cloneRange();
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| 210 | var node = range.endContainer;
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| 211 | var caret = range.endOffset;
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| 212 | range2.selectNode(node);
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| 213 | return [range2.toString(),caret];
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| 214 | },
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| 215 |
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| 216 | insertCode : function(code,replaceCursorBefore) {
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| 217 | var range = window.getSelection().getRangeAt(0);
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| 218 | var node = window.document.createTextNode(code);
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| 219 | var selct = window.getSelection();
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| 220 | var range2 = range.cloneRange();
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| 221 | // Insert text at cursor position
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| 222 | selct.removeAllRanges();
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| 223 | range.deleteContents();
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| 224 | range.insertNode(node);
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| 225 | // Move the cursor to the end of text
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| 226 | range2.selectNode(node);
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| 227 | range2.collapse(replaceCursorBefore);
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| 228 | selct.removeAllRanges();
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| 229 | selct.addRange(range2);
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| 230 | },
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| 231 |
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| 232 | // get code from editor
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| 233 | getCode : function() {
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| 234 | if(!document.getElementsByTagName('pre')[0] || editor.innerHTML == '')
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| 235 | editor = CodePress.getEditor();
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| 236 | var code = editor.innerHTML;
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| 237 | code = code.replace(/<br>/g,'\n');
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| 238 | code = code.replace(/\u2009/g,'');
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| 239 | code = code.replace(/<.*?>/g,'');
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| 240 | code = code.replace(/</g,'<');
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| 241 | code = code.replace(/>/g,'>');
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| 242 | code = code.replace(/&/gi,'&');
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| 243 | return code;
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| 244 | },
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| 245 |
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| 246 | // put code inside editor
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| 247 | setCode : function() {
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| 248 | var code = arguments[0];
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| 249 | code = code.replace(/\u2009/gi,'');
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| 250 | code = code.replace(/&/gi,'&');
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| 251 | code = code.replace(/</g,'<');
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| 252 | code = code.replace(/>/g,'>');
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| 253 | editor.innerHTML = code;
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| 254 | if (code == '')
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| 255 | document.getElementsByTagName('body')[0].innerHTML = '';
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| 256 | },
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| 257 |
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| 258 | // undo and redo methods
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| 259 | actions : {
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| 260 | pos : -1, // actual history position
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| 261 | history : [], // history vector
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| 262 |
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| 263 | undo : function() {
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| 264 | editor = CodePress.getEditor();
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| 265 | if(editor.innerHTML.indexOf(cc)==-1){
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| 266 | if(editor.innerHTML != " ")
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| 267 | window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc));
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| 268 | this.history[this.pos] = editor.innerHTML;
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| 269 | }
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| 270 | this.pos --;
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| 271 | if(typeof(this.history[this.pos])=='undefined') this.pos ++;
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| 272 | editor.innerHTML = this.history[this.pos];
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| 273 | if(editor.innerHTML.indexOf(cc)>-1) editor.innerHTML+=cc;
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| 274 | CodePress.findString();
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| 275 | },
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| 276 |
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| 277 | redo : function() {
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| 278 | // editor = CodePress.getEditor();
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| 279 | this.pos++;
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| 280 | if(typeof(this.history[this.pos])=='undefined') this.pos--;
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| 281 | editor.innerHTML = this.history[this.pos];
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| 282 | CodePress.findString();
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| 283 | },
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| 284 |
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| 285 | next : function() { // get next vector position and clean old ones
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| 286 | if(this.pos>20) this.history[this.pos-21] = undefined;
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| 287 | return ++this.pos;
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| 288 | }
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| 289 | }
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| 290 | }
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| 291 |
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| 292 | Language={};
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| 293 | window.addEventListener('load', function() { CodePress.initialize('new'); }, true); |
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