ace/lib/ace/mode/text.js

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define(function(require, exports, module) {
"use strict";

var Tokenizer = require("../tokenizer").Tokenizer;
var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;
var Behaviour = require("./behaviour").Behaviour;
var unicode = require("../unicode");
var lang = require("../lib/lang");

var Mode = function() {
    this.$tokenizer = new Tokenizer(new TextHighlightRules().getRules());
    this.$behaviour = new Behaviour();
};

(function() {

    this.tokenRe = new RegExp("^["
        + unicode.packages.L
        + unicode.packages.Mn + unicode.packages.Mc
        + unicode.packages.Nd
        + unicode.packages.Pc + "\\$_]+", "g"
    );
    
    this.nonTokenRe = new RegExp("^(?:[^"
        + unicode.packages.L
        + unicode.packages.Mn + unicode.packages.Mc
        + unicode.packages.Nd
        + unicode.packages.Pc + "\\$_]|\s])+", "g"
    );

    this.getTokenizer = function() {
        return this.$tokenizer;
    };

    this.toggleCommentLines = function(state, session, startRow, endRow) {
        var doc = session.doc;
        var regexpStart, lineCommentStart;
        if (!this.lineCommentStart) {
            return false
        } else if (Array.isArray(this.lineCommentStart)) {
            regexpStart = this.lineCommentStart.map(lang.escapeRegExp).join("|");
            lineCommentStart = this.lineCommentStart[0];
        } else {
            regexpStart = lang.escapeRegExp(this.lineCommentStart);
            lineCommentStart = this.lineCommentStart;
        }
        regexpStart = new RegExp("^\\s*(?:" + regexpStart + ") ?");

        var removeComment = true;
        var minSpace = Infinity;
        var indentations = [];

        for (var i = startRow; i <= endRow; i++) {
            var line = doc.getLine(i);
            var indent = line.search(/\S|$/);
            indentations[i] = indent;
            if (indent < minSpace)
                minSpace = indent;
            if (removeComment && !regexpStart.test(line))
                removeComment = false;
        }

        if (removeComment) {
            for (var i = startRow; i <= endRow; i++) {
                var line = doc.getLine(i);
                var m = line.match(regexpStart);
                doc.removeInLine(i, indentations[i], m[0].length);
            }
        } else {
            lineCommentStart += " ";
            for (var i = startRow; i <= endRow; i++) {
                doc.insertInLine({row: i, column: minSpace}, lineCommentStart);
            }
        }
    };

    this.getNextLineIndent = function(state, line, tab) {
        return this.$getIndent(line);
    };

    this.checkOutdent = function(state, line, input) {
        return false;
    };

    this.autoOutdent = function(state, doc, row) {
    };

    this.$getIndent = function(line) {
        var match = line.match(/^(\s+)/);
        if (match) {
            return match[1];
        }

        return "";
    };
    
    this.createWorker = function(session) {
        return null;
    };

    this.createModeDelegates = function (mapping) {
        if (!this.$embeds) {
            return;
        }
        this.$modes = {};
        for (var i = 0; i < this.$embeds.length; i++) {
            if (mapping[this.$embeds[i]]) {
                this.$modes[this.$embeds[i]] = new mapping[this.$embeds[i]]();
            }
        }
        
        var delegations = ['toggleCommentLines', 'getNextLineIndent', 'checkOutdent', 'autoOutdent', 'transformAction'];

        for (var i = 0; i < delegations.length; i++) {
            (function(scope) {
              var functionName = delegations[i];
              var defaultHandler = scope[functionName];
              scope[delegations[i]] = function() {
                  return this.$delegator(functionName, arguments, defaultHandler);
              }
            } (this));
        }
    }
    
    this.$delegator = function(method, args, defaultHandler) {
        var state = args[0];
        
        for (var i = 0; i < this.$embeds.length; i++) {
            if (!this.$modes[this.$embeds[i]]) continue;
            
            var split = state.split(this.$embeds[i]);
            if (!split[0] && split[1]) {
                args[0] = split[1];
                var mode = this.$modes[this.$embeds[i]];
                return mode[method].apply(mode, args);
            }
        }
        var ret = defaultHandler.apply(this, args);
        return defaultHandler ? ret : undefined;
    };
    
    this.transformAction = function(state, action, editor, session, param) {
        if (this.$behaviour) {
            var behaviours = this.$behaviour.getBehaviours();
            for (var key in behaviours) {
                if (behaviours[key][action]) {
                    var ret = behaviours[key][action].apply(this, arguments);
                    if (ret) {
                        return ret;
                    }
                }
            }
        }
    }
    
}).call(Mode.prototype);

exports.Mode = Mode;
});