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public/javascripts/ace/ext-language_tools.js  view on Meta::CPAN

        if (this.popup) {
            this.popup.destroy();
            var el = this.popup.container;
            if (el && el.parentNode)
                el.parentNode.removeChild(el);
        }
        if (this.editor && this.editor.completer == this)
            this.editor.completer == null;
        this.popup = null;
    };

}).call(Autocomplete.prototype);


Autocomplete.for = function(editor) {
    if (editor.completer) {
        return editor.completer;
    }
    if (config.get("sharedPopups")) {
        if (!Autocomplete.$shared)
            Autocomplete.$sharedInstance = new Autocomplete();
        editor.completer = Autocomplete.$sharedInstance;
    } else {
        editor.completer = new Autocomplete();
        editor.once("destroy", function(e, editor) {
            editor.completer.destroy();
        });
    }
    return editor.completer;
};

Autocomplete.startCommand = {
    name: "startAutocomplete",
    exec: function(editor, options) {
        var completer = Autocomplete.for(editor);
        completer.autoInsert = false;
        completer.autoSelect = true;
        completer.showPopup(editor, options);
        completer.cancelContextMenu();
    },
    bindKey: "Ctrl-Space|Ctrl-Shift-Space|Alt-Space"
};

var FilteredList = function(array, filterText) {
    this.all = array;
    this.filtered = array;
    this.filterText = filterText || "";
    this.exactMatch = false;
};
(function(){
    this.setFilter = function(str) {
        if (str.length > this.filterText && str.lastIndexOf(this.filterText, 0) === 0)
            var matches = this.filtered;
        else
            var matches = this.all;

        this.filterText = str;
        matches = this.filterCompletions(matches, this.filterText);
        matches = matches.sort(function(a, b) {
            return b.exactMatch - a.exactMatch || b.$score - a.$score 
                || (a.caption || a.value).localeCompare(b.caption || b.value);
        });
        var prev = null;
        matches = matches.filter(function(item){
            var caption = item.snippet || item.caption || item.value;
            if (caption === prev) return false;
            prev = caption;
            return true;
        });

        this.filtered = matches;
    };
    this.filterCompletions = function(items, needle) {
        var results = [];
        var upper = needle.toUpperCase();
        var lower = needle.toLowerCase();
        loop: for (var i = 0, item; item = items[i]; i++) {
            var caption = item.caption || item.value || item.snippet;
            if (!caption) continue;
            var lastIndex = -1;
            var matchMask = 0;
            var penalty = 0;
            var index, distance;

            if (this.exactMatch) {
                if (needle !== caption.substr(0, needle.length))
                    continue loop;
            } else {
                var fullMatchIndex = caption.toLowerCase().indexOf(lower);
                if (fullMatchIndex > -1) {
                    penalty = fullMatchIndex;
                } else {
                    for (var j = 0; j < needle.length; j++) {
                        var i1 = caption.indexOf(lower[j], lastIndex + 1);
                        var i2 = caption.indexOf(upper[j], lastIndex + 1);
                        index = (i1 >= 0) ? ((i2 < 0 || i1 < i2) ? i1 : i2) : i2;
                        if (index < 0)
                            continue loop;
                        distance = index - lastIndex - 1;
                        if (distance > 0) {
                            if (lastIndex === -1)
                                penalty += 10;
                            penalty += distance;
                            matchMask = matchMask | (1 << j);
                        }
                        lastIndex = index;
                    }
                }
            }
            item.matchMask = matchMask;
            item.exactMatch = penalty ? 0 : 1;
            item.$score = (item.score || 0) - penalty;
            results.push(item);
        }
        return results;
    };
}).call(FilteredList.prototype);

exports.Autocomplete = Autocomplete;
exports.FilteredList = FilteredList;