293 lines
9.5 KiB
JavaScript
293 lines
9.5 KiB
JavaScript
/*
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* CodePress - Real Time Syntax Highlighting Editor written in JavaScript - http://codepress.org/
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*
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* Copyright (C) 2007 Fernando M.A.d.S. <fermads@gmail.com>
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*
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* Developers:
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* Fernando M.A.d.S. <fermads@gmail.com>
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* Michael Hurni <michael.hurni@gmail.com>
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* Contributors:
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* Martin D. Kirk
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU Lesser General Public License as published by the Free Software Foundation.
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*
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* Read the full licence: http://www.opensource.org/licenses/lgpl-license.php
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*/
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CodePress = {
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scrolling : false,
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autocomplete : true,
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// set initial vars and start sh
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initialize : function() {
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if(typeof(editor)=='undefined' && !arguments[0]) return;
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body = document.getElementsByTagName('body')[0];
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body.innerHTML = body.innerHTML.replace(/\n/g,"");
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chars = '|32|46|62|8|'; // charcodes that trigger syntax highlighting
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cc = '\u2009'; // carret char
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editor = document.getElementsByTagName('pre')[0];
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document.designMode = 'on';
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document.addEventListener('keypress', this.keyHandler, true);
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window.addEventListener('scroll', function() { if(!CodePress.scrolling) CodePress.syntaxHighlight('scroll') }, false);
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completeChars = this.getCompleteChars();
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completeEndingChars = this.getCompleteEndingChars();
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},
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// treat key bindings
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keyHandler : function(evt) {
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keyCode = evt.keyCode;
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charCode = evt.charCode;
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fromChar = String.fromCharCode(charCode);
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if((evt.ctrlKey || evt.metaKey) && evt.shiftKey && charCode!=90) { // shortcuts = ctrl||appleKey+shift+key!=z(undo)
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CodePress.shortcuts(charCode?charCode:keyCode);
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}
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else if( (completeEndingChars.indexOf('|'+fromChar+'|')!= -1 || completeChars.indexOf('|'+fromChar+'|')!=-1) && CodePress.autocomplete) { // auto complete
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if(!CodePress.completeEnding(fromChar))
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CodePress.complete(fromChar);
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}
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else if(chars.indexOf('|'+charCode+'|')!=-1||keyCode==13) { // syntax highlighting
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top.setTimeout(function(){CodePress.syntaxHighlight('generic');},100);
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}
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else if(keyCode==9 || evt.tabKey) { // snippets activation (tab)
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CodePress.snippets(evt);
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}
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else if(keyCode==46||keyCode==8) { // save to history when delete or backspace pressed
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CodePress.actions.history[CodePress.actions.next()] = editor.innerHTML;
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}
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else if((charCode==122||charCode==121||charCode==90) && evt.ctrlKey) { // undo and redo
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(charCode==121||evt.shiftKey) ? CodePress.actions.redo() : CodePress.actions.undo();
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evt.preventDefault();
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}
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else if(charCode==118 && evt.ctrlKey) { // handle paste
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top.setTimeout(function(){CodePress.syntaxHighlight('generic');},100);
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}
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else if(charCode==99 && evt.ctrlKey) { // handle cut
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//alert(window.getSelection().getRangeAt(0).toString().replace(/\t/g,'FFF'));
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}
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},
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// put cursor back to its original position after every parsing
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findString : function() {
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if(self.find(cc))
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window.getSelection().getRangeAt(0).deleteContents();
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},
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// split big files, highlighting parts of it
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split : function(code,flag) {
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if(flag=='scroll') {
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this.scrolling = true;
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return code;
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}
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else {
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this.scrolling = false;
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mid = code.indexOf(cc);
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if(mid-2000<0) {ini=0;end=4000;}
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else if(mid+2000>code.length) {ini=code.length-4000;end=code.length;}
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else {ini=mid-2000;end=mid+2000;}
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code = code.substring(ini,end);
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return code;
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}
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},
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getEditor : function() {
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if(!document.getElementsByTagName('pre')[0]) {
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body = document.getElementsByTagName('body')[0];
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if(!body.innerHTML) return body;
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if(body.innerHTML=="<br>") body.innerHTML = "<pre> </pre>";
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else body.innerHTML = "<pre>"+body.innerHTML+"</pre>";
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}
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return document.getElementsByTagName('pre')[0];
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},
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// syntax highlighting parser
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syntaxHighlight : function(flag) {
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//if(document.designMode=='off') document.designMode='on'
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if(flag != 'init') { window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc));}
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editor = CodePress.getEditor();
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o = editor.innerHTML;
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o = o.replace(/<br>/g,'\n');
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o = o.replace(/<.*?>/g,'');
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x = z = this.split(o,flag);
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x = x.replace(/\n/g,'<br>');
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if(arguments[1]&&arguments[2]) x = x.replace(arguments[1],arguments[2]);
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for(i=0;i<Language.syntax.length;i++)
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x = x.replace(Language.syntax[i].input,Language.syntax[i].output);
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editor.innerHTML = this.actions.history[this.actions.next()] = (flag=='scroll') ? x : o.split(z).join(x);
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if(flag!='init') this.findString();
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},
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getLastWord : function() {
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var rangeAndCaret = CodePress.getRangeAndCaret();
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words = rangeAndCaret[0].substring(rangeAndCaret[1]-40,rangeAndCaret[1]);
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words = words.replace(/[\s\n\r\);\W]/g,'\n').split('\n');
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return words[words.length-1].replace(/[\W]/gi,'').toLowerCase();
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},
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snippets : function(evt) {
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var snippets = Language.snippets;
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var trigger = this.getLastWord();
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for (var i=0; i<snippets.length; i++) {
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if(snippets[i].input == trigger) {
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var content = snippets[i].output.replace(/</g,'<');
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content = content.replace(/>/g,'>');
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if(content.indexOf('$0')<0) content += cc;
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else content = content.replace(/\$0/,cc);
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content = content.replace(/\n/g,'<br>');
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var pattern = new RegExp(trigger+cc,'gi');
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evt.preventDefault(); // prevent the tab key from being added
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this.syntaxHighlight('snippets',pattern,content);
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}
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}
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},
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readOnly : function() {
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document.designMode = (arguments[0]) ? 'off' : 'on';
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},
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complete : function(trigger) {
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window.getSelection().getRangeAt(0).deleteContents();
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var complete = Language.complete;
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for (var i=0; i<complete.length; i++) {
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if(complete[i].input == trigger) {
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var pattern = new RegExp('\\'+trigger+cc);
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var content = complete[i].output.replace(/\$0/g,cc);
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parent.setTimeout(function () { CodePress.syntaxHighlight('complete',pattern,content)},0); // wait for char to appear on screen
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}
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}
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},
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getCompleteChars : function() {
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var cChars = '';
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for(var i=0;i<Language.complete.length;i++)
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cChars += '|'+Language.complete[i].input;
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return cChars+'|';
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},
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getCompleteEndingChars : function() {
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var cChars = '';
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for(var i=0;i<Language.complete.length;i++)
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cChars += '|'+Language.complete[i].output.charAt(Language.complete[i].output.length-1);
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return cChars+'|';
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},
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completeEnding : function(trigger) {
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var range = window.getSelection().getRangeAt(0);
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try {
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range.setEnd(range.endContainer, range.endOffset+1)
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}
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catch(e) {
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return false;
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}
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var next_character = range.toString()
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range.setEnd(range.endContainer, range.endOffset-1)
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if(next_character != trigger) return false;
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else {
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range.setEnd(range.endContainer, range.endOffset+1)
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range.deleteContents();
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return true;
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}
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},
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shortcuts : function() {
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var cCode = arguments[0];
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if(cCode==13) cCode = '[enter]';
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else if(cCode==32) cCode = '[space]';
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else cCode = '['+String.fromCharCode(charCode).toLowerCase()+']';
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for(var i=0;i<Language.shortcuts.length;i++)
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if(Language.shortcuts[i].input == cCode)
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this.insertCode(Language.shortcuts[i].output,false);
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},
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getRangeAndCaret : function() {
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var range = window.getSelection().getRangeAt(0);
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var range2 = range.cloneRange();
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var node = range.endContainer;
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var caret = range.endOffset;
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range2.selectNode(node);
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return [range2.toString(),caret];
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},
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insertCode : function(code,replaceCursorBefore) {
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var range = window.getSelection().getRangeAt(0);
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var node = window.document.createTextNode(code);
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var selct = window.getSelection();
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var range2 = range.cloneRange();
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// Insert text at cursor position
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selct.removeAllRanges();
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range.deleteContents();
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range.insertNode(node);
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// Move the cursor to the end of text
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range2.selectNode(node);
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range2.collapse(replaceCursorBefore);
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selct.removeAllRanges();
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selct.addRange(range2);
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},
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// get code from editor
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getCode : function() {
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if(!document.getElementsByTagName('pre')[0] || editor.innerHTML == '')
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editor = CodePress.getEditor();
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var code = editor.innerHTML;
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code = code.replace(/<br>/g,'\n');
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code = code.replace(/\u2009/g,'');
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code = code.replace(/<.*?>/g,'');
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code = code.replace(/</g,'<');
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code = code.replace(/>/g,'>');
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code = code.replace(/&/gi,'&');
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return code;
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},
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// put code inside editor
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setCode : function() {
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var code = arguments[0];
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code = code.replace(/\u2009/gi,'');
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code = code.replace(/&/gi,'&');
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code = code.replace(/</g,'<');
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code = code.replace(/>/g,'>');
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editor.innerHTML = code;
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if (code == '')
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document.getElementsByTagName('body')[0].innerHTML = '';
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},
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// undo and redo methods
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actions : {
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pos : -1, // actual history position
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history : [], // history vector
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undo : function() {
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editor = CodePress.getEditor();
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if(editor.innerHTML.indexOf(cc)==-1){
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if(editor.innerHTML != " ")
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window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc));
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this.history[this.pos] = editor.innerHTML;
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}
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this.pos --;
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if(typeof(this.history[this.pos])=='undefined') this.pos ++;
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editor.innerHTML = this.history[this.pos];
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if(editor.innerHTML.indexOf(cc)>-1) editor.innerHTML+=cc;
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CodePress.findString();
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},
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redo : function() {
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// editor = CodePress.getEditor();
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this.pos++;
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if(typeof(this.history[this.pos])=='undefined') this.pos--;
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editor.innerHTML = this.history[this.pos];
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CodePress.findString();
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},
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next : function() { // get next vector position and clean old ones
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if(this.pos>20) this.history[this.pos-21] = undefined;
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return ++this.pos;
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}
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}
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}
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Language={};
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window.addEventListener('load', function() { CodePress.initialize('new'); }, true); |