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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); |