// 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);
    // Plain browser env
    else mod(CodeMirror);
})(function (CodeMirror) {
    "use strict";

    var htmlConfig = {
        autoSelfClosers: {
            area: true,
            base: true,
            br: true,
            col: true,
            command: true,
            embed: true,
            frame: true,
            hr: true,
            img: true,
            input: true,
            keygen: true,
            link: true,
            meta: true,
            param: true,
            source: true,
            track: true,
            wbr: true,
            menuitem: true,
        },
        implicitlyClosed: {
            dd: true,
            li: true,
            optgroup: true,
            option: true,
            p: true,
            rp: true,
            rt: true,
            tbody: true,
            td: true,
            tfoot: true,
            th: true,
            tr: true,
        },
        contextGrabbers: {
            dd: { dd: true, dt: true },
            dt: { dd: true, dt: true },
            li: { li: true },
            option: { option: true, optgroup: true },
            optgroup: { optgroup: true },
            p: {
                address: true,
                article: true,
                aside: true,
                blockquote: true,
                dir: true,
                div: true,
                dl: true,
                fieldset: true,
                footer: true,
                form: true,
                h1: true,
                h2: true,
                h3: true,
                h4: true,
                h5: true,
                h6: true,
                header: true,
                hgroup: true,
                hr: true,
                menu: true,
                nav: true,
                ol: true,
                p: true,
                pre: true,
                section: true,
                table: true,
                ul: true,
            },
            rp: { rp: true, rt: true },
            rt: { rp: true, rt: true },
            tbody: { tbody: true, tfoot: true },
            td: { td: true, th: true },
            tfoot: { tbody: true },
            th: { td: true, th: true },
            thead: { tbody: true, tfoot: true },
            tr: { tr: true },
        },
        doNotIndent: { pre: true },
        allowUnquoted: true,
        allowMissing: true,
        caseFold: true,
    };

    var xmlConfig = {
        autoSelfClosers: {},
        implicitlyClosed: {},
        contextGrabbers: {},
        doNotIndent: {},
        allowUnquoted: false,
        allowMissing: false,
        caseFold: false,
    };

    CodeMirror.defineMode("xml", function (editorConf, config_) {
        var indentUnit = editorConf.indentUnit;
        var config = {};
        var defaults = config_.htmlMode ? htmlConfig : xmlConfig;
        for (var prop in defaults) config[prop] = defaults[prop];
        for (var prop in config_) config[prop] = config_[prop];

        // Return variables for tokenizers
        var type, setStyle;

        function inText(stream, state) {
            function chain(parser) {
                state.tokenize = parser;
                return parser(stream, state);
            }

            var ch = stream.next();
            if (ch == "<") {
                if (stream.eat("!")) {
                    if (stream.eat("[")) {
                        if (stream.match("CDATA[")) return chain(inBlock("atom", "]]>"));
                        else return null;
                    } else if (stream.match("--")) {
                        return chain(inBlock("comment", "-->"));
                    } else if (stream.match("DOCTYPE", true, true)) {
                        stream.eatWhile(/[\w\._\-]/);
                        return chain(doctype(1));
                    } else {
                        return null;
                    }
                } else if (stream.eat("?")) {
                    stream.eatWhile(/[\w\._\-]/);
                    state.tokenize = inBlock("meta", "?>");
                    return "meta";
                } else {
                    type = stream.eat("/") ? "closeTag" : "openTag";
                    state.tokenize = inTag;
                    return "tag bracket";
                }
            } else if (ch == "&") {
                var ok;
                if (stream.eat("#")) {
                    if (stream.eat("x")) {
                        ok = stream.eatWhile(/[a-fA-F\d]/) && stream.eat(";");
                    } else {
                        ok = stream.eatWhile(/[\d]/) && stream.eat(";");
                    }
                } else {
                    ok = stream.eatWhile(/[\w\.\-:]/) && stream.eat(";");
                }
                return ok ? "atom" : "error";
            } else {
                stream.eatWhile(/[^&<]/);
                return null;
            }
        }
        inText.isInText = true;

        function inTag(stream, state) {
            var ch = stream.next();
            if (ch == ">" || (ch == "/" && stream.eat(">"))) {
                state.tokenize = inText;
                type = ch == ">" ? "endTag" : "selfcloseTag";
                return "tag bracket";
            } else if (ch == "=") {
                type = "equals";
                return null;
            } else if (ch == "<") {
                state.tokenize = inText;
                state.state = baseState;
                state.tagName = state.tagStart = null;
                var next = state.tokenize(stream, state);
                return next ? next + " tag error" : "tag error";
            } else if (/[\'\"]/.test(ch)) {
                state.tokenize = inAttribute(ch);
                state.stringStartCol = stream.column();
                return state.tokenize(stream, state);
            } else {
                stream.match(/^[^\s\u00a0=<>\"\']*[^\s\u00a0=<>\"\'\/]/);
                return "word";
            }
        }

        function inAttribute(quote) {
            var closure = function (stream, state) {
                while (!stream.eol()) {
                    if (stream.next() == quote) {
                        state.tokenize = inTag;
                        break;
                    }
                }
                return "string";
            };
            closure.isInAttribute = true;
            return closure;
        }

        function inBlock(style, terminator) {
            return function (stream, state) {
                while (!stream.eol()) {
                    if (stream.match(terminator)) {
                        state.tokenize = inText;
                        break;
                    }
                    stream.next();
                }
                return style;
            };
        }
        function doctype(depth) {
            return function (stream, state) {
                var ch;
                while ((ch = stream.next()) != null) {
                    if (ch == "<") {
                        state.tokenize = doctype(depth + 1);
                        return state.tokenize(stream, state);
                    } else if (ch == ">") {
                        if (depth == 1) {
                            state.tokenize = inText;
                            break;
                        } else {
                            state.tokenize = doctype(depth - 1);
                            return state.tokenize(stream, state);
                        }
                    }
                }
                return "meta";
            };
        }

        function Context(state, tagName, startOfLine) {
            this.prev = state.context;
            this.tagName = tagName;
            this.indent = state.indented;
            this.startOfLine = startOfLine;
            if (
                config.doNotIndent.hasOwnProperty(tagName) ||
                (state.context && state.context.noIndent)
            )
                this.noIndent = true;
        }
        function popContext(state) {
            if (state.context) state.context = state.context.prev;
        }
        function maybePopContext(state, nextTagName) {
            var parentTagName;
            while (true) {
                if (!state.context) {
                    return;
                }
                parentTagName = state.context.tagName;
                if (
                    !config.contextGrabbers.hasOwnProperty(parentTagName) ||
                    !config.contextGrabbers[parentTagName].hasOwnProperty(nextTagName)
                ) {
                    return;
                }
                popContext(state);
            }
        }

        function baseState(type, stream, state) {
            if (type == "openTag") {
                state.tagStart = stream.column();
                return tagNameState;
            } else if (type == "closeTag") {
                return closeTagNameState;
            } else {
                return baseState;
            }
        }
        function tagNameState(type, stream, state) {
            if (type == "word") {
                state.tagName = stream.current();
                setStyle = "tag";
                return attrState;
            } else {
                setStyle = "error";
                return tagNameState;
            }
        }
        function closeTagNameState(type, stream, state) {
            if (type == "word") {
                var tagName = stream.current();
                if (
                    state.context &&
                    state.context.tagName != tagName &&
                    config.implicitlyClosed.hasOwnProperty(state.context.tagName)
                )
                    popContext(state);
                if (state.context && state.context.tagName == tagName) {
                    setStyle = "tag";
                    return closeState;
                } else {
                    setStyle = "tag error";
                    return closeStateErr;
                }
            } else {
                setStyle = "error";
                return closeStateErr;
            }
        }

        function closeState(type, _stream, state) {
            if (type != "endTag") {
                setStyle = "error";
                return closeState;
            }
            popContext(state);
            return baseState;
        }
        function closeStateErr(type, stream, state) {
            setStyle = "error";
            return closeState(type, stream, state);
        }

        function attrState(type, _stream, state) {
            if (type == "word") {
                setStyle = "attribute";
                return attrEqState;
            } else if (type == "endTag" || type == "selfcloseTag") {
                var tagName = state.tagName,
                    tagStart = state.tagStart;
                state.tagName = state.tagStart = null;
                if (type == "selfcloseTag" || config.autoSelfClosers.hasOwnProperty(tagName)) {
                    maybePopContext(state, tagName);
                } else {
                    maybePopContext(state, tagName);
                    state.context = new Context(state, tagName, tagStart == state.indented);
                }
                return baseState;
            }
            setStyle = "error";
            return attrState;
        }
        function attrEqState(type, stream, state) {
            if (type == "equals") return attrValueState;
            if (!config.allowMissing) setStyle = "error";
            return attrState(type, stream, state);
        }
        function attrValueState(type, stream, state) {
            if (type == "string") return attrContinuedState;
            if (type == "word" && config.allowUnquoted) {
                setStyle = "string";
                return attrState;
            }
            setStyle = "error";
            return attrState(type, stream, state);
        }
        function attrContinuedState(type, stream, state) {
            if (type == "string") return attrContinuedState;
            return attrState(type, stream, state);
        }

        return {
            startState: function (baseIndent) {
                var state = {
                    tokenize: inText,
                    state: baseState,
                    indented: baseIndent || 0,
                    tagName: null,
                    tagStart: null,
                    context: null,
                };
                if (baseIndent != null) state.baseIndent = baseIndent;
                return state;
            },

            token: function (stream, state) {
                if (!state.tagName && stream.sol()) state.indented = stream.indentation();

                if (stream.eatSpace()) return null;
                type = null;
                var style = state.tokenize(stream, state);
                if ((style || type) && style != "comment") {
                    setStyle = null;
                    state.state = state.state(type || style, stream, state);
                    if (setStyle) style = setStyle == "error" ? style + " error" : setStyle;
                }
                return style;
            },

            indent: function (state, textAfter, fullLine) {
                var context = state.context;
                // Indent multi-line strings (e.g. css).
                if (state.tokenize.isInAttribute) {
                    if (state.tagStart == state.indented) return state.stringStartCol + 1;
                    else return state.indented + indentUnit;
                }
                if (context && context.noIndent) return CodeMirror.Pass;
                if (state.tokenize != inTag && state.tokenize != inText)
                    return fullLine ? fullLine.match(/^(\s*)/)[0].length : 0;
                // Indent the starts of attribute names.
                if (state.tagName) {
                    if (config.multilineTagIndentPastTag !== false)
                        return state.tagStart + state.tagName.length + 2;
                    else
                        return state.tagStart + indentUnit * (config.multilineTagIndentFactor || 1);
                }
                if (config.alignCDATA && /<!\[CDATA\[/.test(textAfter)) return 0;
                var tagAfter = textAfter && /^<(\/)?([\w_:\.-]*)/.exec(textAfter);
                if (tagAfter && tagAfter[1]) {
                    // Closing tag spotted
                    while (context) {
                        if (context.tagName == tagAfter[2]) {
                            context = context.prev;
                            break;
                        } else if (config.implicitlyClosed.hasOwnProperty(context.tagName)) {
                            context = context.prev;
                        } else {
                            break;
                        }
                    }
                } else if (tagAfter) {
                    // Opening tag spotted
                    while (context) {
                        var grabbers = config.contextGrabbers[context.tagName];
                        if (grabbers && grabbers.hasOwnProperty(tagAfter[2]))
                            context = context.prev;
                        else break;
                    }
                }
                while (context && context.prev && !context.startOfLine) context = context.prev;
                if (context) return context.indent + indentUnit;
                else return state.baseIndent || 0;
            },

            electricInput: /<\/[\s\w:]+>$/,
            blockCommentStart: "<!--",
            blockCommentEnd: "-->",

            configuration: config.htmlMode ? "html" : "xml",
            helperType: config.htmlMode ? "html" : "xml",

            skipAttribute: function (state) {
                if (state.state == attrValueState) state.state = attrState;
            },
        };
    });

    CodeMirror.defineMIME("text/xml", "xml");
    CodeMirror.defineMIME("application/xml", "xml");
    if (!CodeMirror.mimeModes.hasOwnProperty("text/html"))
        CodeMirror.defineMIME("text/html", { name: "xml", htmlMode: true });
});
