continuecomment.js (3022B)
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others 2 // Distributed under an MIT license: http://codemirror.net/LICENSE 3 4 (function(mod) { 5 if (typeof exports == "object" && typeof module == "object") // CommonJS 6 mod(require("../../lib/codemirror")); 7 else if (typeof define == "function" && define.amd) // AMD 8 define(["../../lib/codemirror"], mod); 9 else // Plain browser env 10 mod(CodeMirror); 11 })(function(CodeMirror) { 12 function continueComment(cm) { 13 if (cm.getOption("disableInput")) return CodeMirror.Pass; 14 var ranges = cm.listSelections(), mode, inserts = []; 15 for (var i = 0; i < ranges.length; i++) { 16 var pos = ranges[i].head 17 if (!/\bcomment\b/.test(cm.getTokenTypeAt(pos))) return CodeMirror.Pass; 18 var modeHere = cm.getModeAt(pos) 19 if (!mode) mode = modeHere; 20 else if (mode != modeHere) return CodeMirror.Pass; 21 22 var insert = null; 23 if (mode.blockCommentStart && mode.blockCommentContinue) { 24 var line = cm.getLine(pos.line).slice(0, pos.ch) 25 var end = line.lastIndexOf(mode.blockCommentEnd), found 26 if (end != -1 && end == pos.ch - mode.blockCommentEnd.length) { 27 // Comment ended, don't continue it 28 } else if ((found = line.lastIndexOf(mode.blockCommentStart)) > -1 && found > end) { 29 insert = line.slice(0, found) 30 if (/\S/.test(insert)) { 31 insert = "" 32 for (var j = 0; j < found; ++j) insert += " " 33 } 34 } else if ((found = line.indexOf(mode.blockCommentContinue)) > -1 && !/\S/.test(line.slice(0, found))) { 35 insert = line.slice(0, found) 36 } 37 if (insert != null) insert += mode.blockCommentContinue 38 } 39 if (insert == null && mode.lineComment && continueLineCommentEnabled(cm)) { 40 var line = cm.getLine(pos.line), found = line.indexOf(mode.lineComment); 41 if (found > -1) { 42 insert = line.slice(0, found); 43 if (/\S/.test(insert)) insert = null; 44 else insert += mode.lineComment + line.slice(found + mode.lineComment.length).match(/^\s*/)[0]; 45 } 46 } 47 if (insert == null) return CodeMirror.Pass; 48 inserts[i] = "\n" + insert; 49 } 50 51 cm.operation(function() { 52 for (var i = ranges.length - 1; i >= 0; i--) 53 cm.replaceRange(inserts[i], ranges[i].from(), ranges[i].to(), "+insert"); 54 }); 55 } 56 57 function continueLineCommentEnabled(cm) { 58 var opt = cm.getOption("continueComments"); 59 if (opt && typeof opt == "object") 60 return opt.continueLineComment !== false; 61 return true; 62 } 63 64 CodeMirror.defineOption("continueComments", null, function(cm, val, prev) { 65 if (prev && prev != CodeMirror.Init) 66 cm.removeKeyMap("continueComment"); 67 if (val) { 68 var key = "Enter"; 69 if (typeof val == "string") 70 key = val; 71 else if (typeof val == "object" && val.key) 72 key = val.key; 73 var map = {name: "continueComment"}; 74 map[key] = continueComment; 75 cm.addKeyMap(map); 76 } 77 }); 78 });