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 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Ajax.org B.V. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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ace.define('ace/mode/xml', ['require', 'exports', 'module' , 'ace/lib/oop', 'ace/lib/lang', 'ace/mode/text', 'ace/mode/xml_highlight_rules', 'ace/mode/behaviour/xml', 'ace/mode/folding/xml'], function(require, exports, module) {


    var oop = require("../lib/oop");
    var lang = require("../lib/lang");
    var TextMode = require("./text").Mode;
    var XmlHighlightRules = require("./xml_highlight_rules").XmlHighlightRules;
    var XmlBehaviour = require("./behaviour/xml").XmlBehaviour;
    var XmlFoldMode = require("./folding/xml").FoldMode;

    var Mode = function() {
        this.HighlightRules = XmlHighlightRules;
        this.$behaviour = new XmlBehaviour();
        this.foldingRules = new XmlFoldMode();
    };

    oop.inherits(Mode, TextMode);

    (function() {

        this.voidElements = lang.arrayToMap([]);

        this.blockComment = {start: "<!--", end: "-->"};

        this.$id = "ace/mode/xml";
    }).call(Mode.prototype);

    exports.Mode = Mode;
});

ace.define('ace/mode/xml_highlight_rules', ['require', 'exports', 'module' , 'ace/lib/oop', 'ace/mode/text_highlight_rules'], function(require, exports, module) {


    var oop = require("../lib/oop");
    var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;

    var XmlHighlightRules = function(normalize) {
        this.$rules = {
            start : [
                {token : "string.cdata.xml", regex : "<\\!\\[CDATA\\[", next : "cdata"},
                {
                    token : ["punctuation.xml-decl.xml", "keyword.xml-decl.xml"],
                    regex : "(<\\?)(xml)(?=[\\s])", next : "xml_decl", caseInsensitive: true
                },
                {
                    token : ["punctuation.instruction.xml", "keyword.instruction.xml"],
                    regex : "(<\\?)([-_a-zA-Z0-9]+)", next : "processing_instruction",
                },
                {token : "comment.xml", regex : "<\\!--", next : "comment"},
                {
                    token : ["xml-pe.doctype.xml", "xml-pe.doctype.xml"],
                    regex : "(<\\!)(DOCTYPE)(?=[\\s])", next : "doctype", caseInsensitive: true
                },
                {include : "tag"},
                {token : "text.end-tag-open.xml", regex: "</"},
                {token : "text.tag-open.xml", regex: "<"},
                {include : "reference"},
                {defaultToken : "text.xml"}
            ],

            xml_decl : [{
                token : "entity.other.attribute-name.decl-attribute-name.xml",
                regex : "(?:[-_a-zA-Z0-9]+:)?[-_a-zA-Z0-9]+"
            }, {
                token : "keyword.operator.decl-attribute-equals.xml",
                regex : "="
            }, {
                include: "whitespace"
            }, {
                include: "string"
            }, {
                token : "punctuation.xml-decl.xml",
                regex : "\\?>",
                next : "start"
            }],

            processing_instruction : [
                {token : "punctuation.instruction.xml", regex : "\\?>", next : "start"},
                {defaultToken : "instruction.xml"}
            ],

            doctype : [
                {include : "whitespace"},
                {include : "string"},
                {token : "xml-pe.doctype.xml", regex : ">", next : "start"},
                {token : "xml-pe.xml", regex : "[-_a-zA-Z0-9:]+"},
                {token : "punctuation.int-subset", regex : "\\[", push : "int_subset"}
            ],

            int_subset : [{
                token : "text.xml",
                regex : "\\s+"
            }, {
                token: "punctuation.int-subset.xml",
                regex: "]",
                next: "pop"
            }, {
                token : ["punctuation.markup-decl.xml", "keyword.markup-decl.xml"],
                regex : "(<\\!)([-_a-zA-Z0-9]+)",
                push : [{
                    token : "text",
                    regex : "\\s+"
                },
                    {
                        token : "punctuation.markup-decl.xml",
                        regex : ">",
                        next : "pop"
                    },
                    {include : "string"}]
            }],

            cdata : [
                {token : "string.cdata.xml", regex : "\\]\\]>", next : "start"},
                {token : "text.xml", regex : "\\s+"},
                {token : "text.xml", regex : "(?:[^\\]]|\\](?!\\]>))+"}
            ],

            comment : [
                {token : "comment.xml", regex : "-->", next : "start"},
                {defaultToken : "comment.xml"}
            ],

            reference : [{
                token : "constant.language.escape.reference.xml",
                regex : "(?:&#[0-9]+;)|(?:&#x[0-9a-fA-F]+;)|(?:&[a-zA-Z0-9_:\\.-]+;)"
            }],

            attr_reference : [{
                token : "constant.language.escape.reference.attribute-value.xml",
                regex : "(?:&#[0-9]+;)|(?:&#x[0-9a-fA-F]+;)|(?:&[a-zA-Z0-9_:\\.-]+;)"
            }],

            tag : [{
                token : ["meta.tag.punctuation.tag-open.xml", "meta.tag.punctuation.end-tag-open.xml", "meta.tag.tag-name.xml"],
                regex : "(?:(<)|(</))((?:[-_a-zA-Z0-9]+:)?[-_a-zA-Z0-9]+)",
                next: [
                    {include : "attributes"},
                    {token : "meta.tag.punctuation.tag-close.xml", regex : "/?>", next : "start"}
                ]
            }],

            tag_whitespace : [
                {token : "text.tag-whitespace.xml", regex : "\\s+"}
            ],
            whitespace : [
                {token : "text.whitespace.xml", regex : "\\s+"}
            ],
            string: [{
                token : "string.xml",
                regex : "'",
                push : [
                    {token : "string.xml", regex: "'", next: "pop"},
                    {defaultToken : "string.xml"}
                ]
            }, {
                token : "string.xml",
                regex : '"',
                push : [
                    {token : "string.xml", regex: '"', next: "pop"},
                    {defaultToken : "string.xml"}
                ]
            }],

            attributes: [{
                token : "entity.other.attribute-name.xml",
                regex : "(?:[-_a-zA-Z0-9]+:)?[-_a-zA-Z0-9]+"
            }, {
                token : "keyword.operator.attribute-equals.xml",
                regex : "="
            }, {
                include: "tag_whitespace"
            }, {
                include: "attribute_value"
            }],

            attribute_value: [{
                token : "string.attribute-value.xml",
                regex : "'",
                push : [
                    {token : "string.attribute-value.xml", regex: "'", next: "pop"},
                    {include : "attr_reference"},
                    {defaultToken : "string.attribute-value.xml"}
                ]
            }, {
                token : "string.attribute-value.xml",
                regex : '"',
                push : [
                    {token : "string.attribute-value.xml", regex: '"', next: "pop"},
                    {include : "attr_reference"},
                    {defaultToken : "string.attribute-value.xml"}
                ]
            }]
        };

        if (this.constructor === XmlHighlightRules)
            this.normalizeRules();
    };


    (function() {

        this.embedTagRules = function(HighlightRules, prefix, tag){
            this.$rules.tag.unshift({
                token : ["meta.tag.punctuation.tag-open.xml", "meta.tag." + tag + ".tag-name.xml"],
                regex : "(<)(" + tag + "(?=\\s|>|$))",
                next: [
                    {include : "attributes"},
                    {token : "meta.tag.punctuation.tag-close.xml", regex : "/?>", next : prefix + "start"}
                ]
            });

            this.$rules[tag + "-end"] = [
                {include : "attributes"},
                {token : "meta.tag.punctuation.tag-close.xml", regex : "/?>",  next: "start",
                    onMatch : function(value, currentState, stack) {
                        stack.splice(0);
                        return this.token;
                    }}
            ]

            this.embedRules(HighlightRules, prefix, [{
                token: ["meta.tag.punctuation.end-tag-open.xml", "meta.tag." + tag + ".tag-name.xml"],
                regex : "(</)(" + tag + "(?=\\s|>|$))",
                next: tag + "-end"
            }, {
                token: "string.cdata.xml",
                regex : "<\\!\\[CDATA\\["
            }, {
                token: "string.cdata.xml",
                regex : "\\]\\]>"
            }]);
        };

    }).call(TextHighlightRules.prototype);

    oop.inherits(XmlHighlightRules, TextHighlightRules);

    exports.XmlHighlightRules = XmlHighlightRules;
});

ace.define('ace/mode/behaviour/xml', ['require', 'exports', 'module' , 'ace/lib/oop', 'ace/mode/behaviour', 'ace/token_iterator'], function(require, exports, module) {


    var oop = require("../../lib/oop");
    var Behaviour = require("../behaviour").Behaviour;
    var TokenIterator = require("../../token_iterator").TokenIterator;

    function is(token, type) {
        return token.type.lastIndexOf(type + ".xml") > -1;
    }

    var XmlBehaviour = function () {

        this.add("string_dquotes", "insertion", function (state, action, editor, session, text) {
            if (text == '"' || text == "'") {
                var quote = text;
                var selected = session.doc.getTextRange(editor.getSelectionRange());
                if (selected !== "" && selected !== "'" && selected != '"' && editor.getWrapBehavioursEnabled()) {
                    return {
                        text: quote + selected + quote,
                        selection: false
                    };
                }

                var cursor = editor.getCursorPosition();
                var line = session.doc.getLine(cursor.row);
                var rightChar = line.substring(cursor.column, cursor.column + 1);
                var iterator = new TokenIterator(session, cursor.row, cursor.column);
                var token = iterator.getCurrentToken();

                if (rightChar == quote && (is(token, "attribute-value") || is(token, "string"))) {
                    return {
                        text: "",
                        selection: [1, 1]
                    };
                }

                if (!token)
                    token = iterator.stepBackward();

                if (!token)
                    return;

                while (is(token, "tag-whitespace") || is(token, "whitespace")) {
                    token = iterator.stepBackward();
                }
                var rightSpace = !rightChar || rightChar.match(/\s/);
                if (is(token, "attribute-equals") && (rightSpace || rightChar == '>') || (is(token, "decl-attribute-equals") && (rightSpace || rightChar == '?'))) {
                    return {
                        text: quote + quote,
                        selection: [1, 1]
                    };
                }
            }
        });

        this.add("string_dquotes", "deletion", function(state, action, editor, session, range) {
            var selected = session.doc.getTextRange(range);
            if (!range.isMultiLine() && (selected == '"' || selected == "'")) {
                var line = session.doc.getLine(range.start.row);
                var rightChar = line.substring(range.start.column + 1, range.start.column + 2);
                if (rightChar == selected) {
                    range.end.column++;
                    return range;
                }
            }
        });

        this.add("autoclosing", "insertion", function (state, action, editor, session, text) {
            if (text == '>') {
                var position = editor.getCursorPosition();
                var iterator = new TokenIterator(session, position.row, position.column);
                var token = iterator.getCurrentToken() || iterator.stepBackward();
                if (!token || !(is(token, "tag-name") || is(token, "tag-whitespace") || is(token, "attribute-name") || is(token, "attribute-equals") || is(token, "attribute-value")))
                    return;
                if (is(token, "reference.attribute-value"))
                    return;
                if (is(token, "attribute-value")) {
                    var firstChar = token.value.charAt(0);
                    if (firstChar == '"' || firstChar == "'") {
                        var lastChar = token.value.charAt(token.value.length - 1);
                        var tokenEnd = iterator.getCurrentTokenColumn() + token.value.length;
                        if (tokenEnd > position.column || tokenEnd == position.column && firstChar != lastChar)
                            return;
                    }
                }
                while (!is(token, "tag-name")) {
                    token = iterator.stepBackward();
                }

                var tokenRow = iterator.getCurrentTokenRow();
                var tokenColumn = iterator.getCurrentTokenColumn();
                if (is(iterator.stepBackward(), "end-tag-open"))
                    return;

                var element = token.value;
                if (tokenRow == position.row)
                    element = element.substring(0, position.column - tokenColumn);

                if (this.voidElements.hasOwnProperty(element.toLowerCase()))
                    return;

                return {
                    text: '>' + '</' + element + '>',
                    selection: [1, 1]
                };
            }
        });

        this.add('autoindent', 'insertion', function (state, action, editor, session, text) {
            if (text == "\n") {
                var cursor = editor.getCursorPosition();
                var line = session.getLine(cursor.row);
                var rightChars = line.substring(cursor.column, cursor.column + 2);
                if (rightChars == '</') {
                    var next_indent = this.$getIndent(line);
                    var indent = next_indent + session.getTabString();

                    return {
                        text: '\n' + indent + '\n' + next_indent,
                        selection: [1, indent.length, 1, indent.length]
                    };
                }
            }
        });

    };

    oop.inherits(XmlBehaviour, Behaviour);

    exports.XmlBehaviour = XmlBehaviour;
});

ace.define('ace/mode/folding/xml', ['require', 'exports', 'module' , 'ace/lib/oop', 'ace/lib/lang', 'ace/range', 'ace/mode/folding/fold_mode', 'ace/token_iterator'], function(require, exports, module) {


    var oop = require("../../lib/oop");
    var lang = require("../../lib/lang");
    var Range = require("../../range").Range;
    var BaseFoldMode = require("./fold_mode").FoldMode;
    var TokenIterator = require("../../token_iterator").TokenIterator;

    var FoldMode = exports.FoldMode = function(voidElements, optionalEndTags) {
        BaseFoldMode.call(this);
        this.voidElements = oop.mixin(voidElements || {}, optionalEndTags || {});
    };
    oop.inherits(FoldMode, BaseFoldMode);

    var Tag = function() {
        this.tagName = "";
        this.closing = false;
        this.selfClosing = false;
        this.start = {row: 0, column: 0};
        this.end = {row: 0, column: 0};
    };

    function is(token, type) {
        return token.type.lastIndexOf(type + ".xml") > -1;
    }

    (function() {

        this.getFoldWidget = function(session, foldStyle, row) {
            var tag = this._getFirstTagInLine(session, row);

            if (!tag)
                return "";

            if (tag.closing || (!tag.tagName && tag.selfClosing))
                return foldStyle == "markbeginend" ? "end" : "";

            if (!tag.tagName || tag.selfClosing || this.voidElements.hasOwnProperty(tag.tagName.toLowerCase()))
                return "";

            if (this._findEndTagInLine(session, row, tag.tagName, tag.end.column))
                return "";

            return "start";
        };
        this._getFirstTagInLine = function(session, row) {
            var tokens = session.getTokens(row);
            var tag = new Tag();

            for (var i = 0; i < tokens.length; i++) {
                var token = tokens[i];
                if (is(token, "tag-open")) {
                    tag.end.column = tag.start.column + token.value.length;
                    tag.closing = is(token, "end-tag-open");
                    token = tokens[++i];
                    if (!token)
                        return null;
                    tag.tagName = token.value;
                    tag.end.column += token.value.length;
                    for (i++; i < tokens.length; i++) {
                        token = tokens[i];
                        tag.end.column += token.value.length;
                        if (is(token, "tag-close")) {
                            tag.selfClosing = token.value == '/>';
                            break;
                        }
                    }
                    return tag;
                } else if (is(token, "tag-close")) {
                    tag.selfClosing = token.value == '/>';
                    return tag;
                }
                tag.start.column += token.value.length;
            }

            return null;
        };

        this._findEndTagInLine = function(session, row, tagName, startColumn) {
            var tokens = session.getTokens(row);
            var column = 0;
            for (var i = 0; i < tokens.length; i++) {
                var token = tokens[i];
                column += token.value.length;
                if (column < startColumn)
                    continue;
                if (is(token, "end-tag-open")) {
                    token = tokens[i + 1];
                    if (token && token.value == tagName)
                        return true;
                }
            }
            return false;
        };
        this._readTagForward = function(iterator) {
            var token = iterator.getCurrentToken();
            if (!token)
                return null;

            var tag = new Tag();
            do {
                if (is(token, "tag-open")) {
                    tag.closing = is(token, "end-tag-open");
                    tag.start.row = iterator.getCurrentTokenRow();
                    tag.start.column = iterator.getCurrentTokenColumn();
                } else if (is(token, "tag-name")) {
                    tag.tagName = token.value;
                } else if (is(token, "tag-close")) {
                    tag.selfClosing = token.value == "/>";
                    tag.end.row = iterator.getCurrentTokenRow();
                    tag.end.column = iterator.getCurrentTokenColumn() + token.value.length;
                    iterator.stepForward();
                    return tag;
                }
            } while(token = iterator.stepForward());

            return null;
        };

        this._readTagBackward = function(iterator) {
            var token = iterator.getCurrentToken();
            if (!token)
                return null;

            var tag = new Tag();
            do {
                if (is(token, "tag-open")) {
                    tag.closing = is(token, "end-tag-open");
                    tag.start.row = iterator.getCurrentTokenRow();
                    tag.start.column = iterator.getCurrentTokenColumn();
                    iterator.stepBackward();
                    return tag;
                } else if (is(token, "tag-name")) {
                    tag.tagName = token.value;
                } else if (is(token, "tag-close")) {
                    tag.selfClosing = token.value == "/>";
                    tag.end.row = iterator.getCurrentTokenRow();
                    tag.end.column = iterator.getCurrentTokenColumn() + token.value.length;
                }
            } while(token = iterator.stepBackward());

            return null;
        };

        this._pop = function(stack, tag) {
            while (stack.length) {

                var top = stack[stack.length-1];
                if (!tag || top.tagName == tag.tagName) {
                    return stack.pop();
                }
                else if (this.voidElements.hasOwnProperty(tag.tagName)) {
                    return;
                }
                else if (this.voidElements.hasOwnProperty(top.tagName)) {
                    stack.pop();
                    continue;
                } else {
                    return null;
                }
            }
        };

        this.getFoldWidgetRange = function(session, foldStyle, row) {
            var firstTag = this._getFirstTagInLine(session, row);

            if (!firstTag)
                return null;

            var isBackward = firstTag.closing || firstTag.selfClosing;
            var stack = [];
            var tag;

            if (!isBackward) {
                var iterator = new TokenIterator(session, row, firstTag.start.column);
                var start = {
                    row: row,
                    column: firstTag.start.column + firstTag.tagName.length + 2
                };
                while (tag = this._readTagForward(iterator)) {
                    if (tag.selfClosing) {
                        if (!stack.length) {
                            tag.start.column += tag.tagName.length + 2;
                            tag.end.column -= 2;
                            return Range.fromPoints(tag.start, tag.end);
                        } else
                            continue;
                    }

                    if (tag.closing) {
                        this._pop(stack, tag);
                        if (stack.length == 0)
                            return Range.fromPoints(start, tag.start);
                    }
                    else {
                        stack.push(tag);
                    }
                }
            }
            else {
                var iterator = new TokenIterator(session, row, firstTag.end.column);
                var end = {
                    row: row,
                    column: firstTag.start.column
                };

                while (tag = this._readTagBackward(iterator)) {
                    if (tag.selfClosing) {
                        if (!stack.length) {
                            tag.start.column += tag.tagName.length + 2;
                            tag.end.column -= 2;
                            return Range.fromPoints(tag.start, tag.end);
                        } else
                            continue;
                    }

                    if (!tag.closing) {
                        this._pop(stack, tag);
                        if (stack.length == 0) {
                            tag.start.column += tag.tagName.length + 2;
                            return Range.fromPoints(tag.start, end);
                        }
                    }
                    else {
                        stack.push(tag);
                    }
                }
            }

        };

    }).call(FoldMode.prototype);

});
