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