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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 * 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); |