'use strict';var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
    switch (arguments.length) {
        case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
        case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
        case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
    }
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var dom_adapter_1 = require('angular2/src/core/dom/dom_adapter');
var lang_1 = require('angular2/src/core/facade/lang');
var collection_1 = require('angular2/src/core/facade/collection');
var event_manager_1 = require('./event_manager');
var di_1 = require('angular2/src/core/di');
var modifierKeys = ['alt', 'control', 'meta', 'shift'];
var modifierKeyGetters = {
    'alt': function (event) { return event.altKey; },
    'control': function (event) { return event.ctrlKey; },
    'meta': function (event) { return event.metaKey; },
    'shift': function (event) { return event.shiftKey; }
};
var KeyEventsPlugin = (function (_super) {
    __extends(KeyEventsPlugin, _super);
    function KeyEventsPlugin() {
        _super.call(this);
    }
    KeyEventsPlugin.prototype.supports = function (eventName) {
        return lang_1.isPresent(KeyEventsPlugin.parseEventName(eventName));
    };
    KeyEventsPlugin.prototype.addEventListener = function (element, eventName, handler) {
        var parsedEvent = KeyEventsPlugin.parseEventName(eventName);
        var outsideHandler = KeyEventsPlugin.eventCallback(element, collection_1.StringMapWrapper.get(parsedEvent, 'fullKey'), handler, this.manager.getZone());
        this.manager.getZone().runOutsideAngular(function () {
            dom_adapter_1.DOM.on(element, collection_1.StringMapWrapper.get(parsedEvent, 'domEventName'), outsideHandler);
        });
    };
    KeyEventsPlugin.parseEventName = function (eventName) {
        var parts = eventName.toLowerCase().split('.');
        var domEventName = parts.shift();
        if ((parts.length === 0) ||
            !(lang_1.StringWrapper.equals(domEventName, 'keydown') ||
                lang_1.StringWrapper.equals(domEventName, 'keyup'))) {
            return null;
        }
        var key = KeyEventsPlugin._normalizeKey(parts.pop());
        var fullKey = '';
        modifierKeys.forEach(function (modifierName) {
            if (collection_1.ListWrapper.contains(parts, modifierName)) {
                collection_1.ListWrapper.remove(parts, modifierName);
                fullKey += modifierName + '.';
            }
        });
        fullKey += key;
        if (parts.length != 0 || key.length === 0) {
            // returning null instead of throwing to let another plugin process the event
            return null;
        }
        var result = collection_1.StringMapWrapper.create();
        collection_1.StringMapWrapper.set(result, 'domEventName', domEventName);
        collection_1.StringMapWrapper.set(result, 'fullKey', fullKey);
        return result;
    };
    KeyEventsPlugin.getEventFullKey = function (event) {
        var fullKey = '';
        var key = dom_adapter_1.DOM.getEventKey(event);
        key = key.toLowerCase();
        if (lang_1.StringWrapper.equals(key, ' ')) {
            key = 'space'; // for readability
        }
        else if (lang_1.StringWrapper.equals(key, '.')) {
            key = 'dot'; // because '.' is used as a separator in event names
        }
        modifierKeys.forEach(function (modifierName) {
            if (modifierName != key) {
                var modifierGetter = collection_1.StringMapWrapper.get(modifierKeyGetters, modifierName);
                if (modifierGetter(event)) {
                    fullKey += modifierName + '.';
                }
            }
        });
        fullKey += key;
        return fullKey;
    };
    KeyEventsPlugin.eventCallback = function (element, fullKey, handler, zone) {
        return function (event) {
            if (lang_1.StringWrapper.equals(KeyEventsPlugin.getEventFullKey(event), fullKey)) {
                zone.run(function () { return handler(event); });
            }
        };
    };
    /** @internal */
    KeyEventsPlugin._normalizeKey = function (keyName) {
        // TODO: switch to a StringMap if the mapping grows too much
        switch (keyName) {
            case 'esc':
                return 'escape';
            default:
                return keyName;
        }
    };
    KeyEventsPlugin = __decorate([
        di_1.Injectable(), 
        __metadata('design:paramtypes', [])
    ], KeyEventsPlugin);
    return KeyEventsPlugin;
})(event_manager_1.EventManagerPlugin);
exports.KeyEventsPlugin = KeyEventsPlugin;
//# sourceMappingURL=key_events.js.map