S2OJ/web/js/codemirror/addon/comment/continuecomment.js

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2016-07-18 16:39:37 +00:00
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
var modes = ["clike", "css", "javascript"];
for (var i = 0; i < modes.length; ++i)
CodeMirror.extendMode(modes[i], {blockCommentContinue: " * "});
function continueComment(cm) {
if (cm.getOption("disableInput")) return CodeMirror.Pass;
var ranges = cm.listSelections(), mode, inserts = [];
for (var i = 0; i < ranges.length; i++) {
var pos = ranges[i].head, token = cm.getTokenAt(pos);
if (token.type != "comment") return CodeMirror.Pass;
var modeHere = CodeMirror.innerMode(cm.getMode(), token.state).mode;
if (!mode) mode = modeHere;
else if (mode != modeHere) return CodeMirror.Pass;
var insert = null;
if (mode.blockCommentStart && mode.blockCommentContinue) {
var end = token.string.indexOf(mode.blockCommentEnd);
var full = cm.getRange(CodeMirror.Pos(pos.line, 0), CodeMirror.Pos(pos.line, token.end)), found;
if (end != -1 && end == token.string.length - mode.blockCommentEnd.length && pos.ch >= end) {
// Comment ended, don't continue it
} else if (token.string.indexOf(mode.blockCommentStart) == 0) {
insert = full.slice(0, token.start);
if (!/^\s*$/.test(insert)) {
insert = "";
for (var j = 0; j < token.start; ++j) insert += " ";
}
} else if ((found = full.indexOf(mode.blockCommentContinue)) != -1 &&
found + mode.blockCommentContinue.length > token.start &&
/^\s*$/.test(full.slice(0, found))) {
insert = full.slice(0, found);
}
if (insert != null) insert += mode.blockCommentContinue;
}
if (insert == null && mode.lineComment && continueLineCommentEnabled(cm)) {
var line = cm.getLine(pos.line), found = line.indexOf(mode.lineComment);
if (found > -1) {
insert = line.slice(0, found);
if (/\S/.test(insert)) insert = null;
else insert += mode.lineComment + line.slice(found + mode.lineComment.length).match(/^\s*/)[0];
}
}
if (insert == null) return CodeMirror.Pass;
inserts[i] = "\n" + insert;
}
cm.operation(function() {
for (var i = ranges.length - 1; i >= 0; i--)
cm.replaceRange(inserts[i], ranges[i].from(), ranges[i].to(), "+insert");
});
}
function continueLineCommentEnabled(cm) {
var opt = cm.getOption("continueComments");
if (opt && typeof opt == "object")
return opt.continueLineComment !== false;
return true;
}
CodeMirror.defineOption("continueComments", null, function(cm, val, prev) {
if (prev && prev != CodeMirror.Init)
cm.removeKeyMap("continueComment");
if (val) {
var key = "Enter";
if (typeof val == "string")
key = val;
else if (typeof val == "object" && val.key)
key = val.key;
var map = {name: "continueComment"};
map[key] = continueComment;
cm.addKeyMap(map);
}
});
});