devextreme/dist/transpiled/events/pointer/mouse_and_touch.js

HTML5 JavaScript Component Suite for Responsive Web Development

"use strict";

var extend = require("../../core/utils/extend").extend,
    BaseStrategy = require("./base"),
    MouseStrategy = require("./mouse"),
    TouchStrategy = require("./touch"),
    eventUtils = require("../utils");

var eventMap = {
    "dxpointerdown": "touchstart mousedown",
    "dxpointermove": "touchmove mousemove",
    "dxpointerup": "touchend mouseup",
    "dxpointercancel": "touchcancel",
    "dxpointerover": "mouseover",
    "dxpointerout": "mouseout",
    "dxpointerenter": "mouseenter",
    "dxpointerleave": "mouseleave"
};

var activated = false;
var activateStrategy = function activateStrategy() {
    if (activated) {
        return;
    }

    MouseStrategy.activate();

    activated = true;
};

var MouseAndTouchStrategy = BaseStrategy.inherit({

    EVENT_LOCK_TIMEOUT: 100,

    ctor: function ctor() {
        this.callBase.apply(this, arguments);

        activateStrategy();
    },

    _handler: function _handler(e) {
        var isMouseEvent = eventUtils.isMouseEvent(e);

        if (!isMouseEvent) {
            this._skipNextEvents = true;
        }

        if (isMouseEvent && this._mouseLocked) {
            return;
        }

        if (isMouseEvent && this._skipNextEvents) {
            this._skipNextEvents = false;
            this._mouseLocked = true;

            clearTimeout(this._unlockMouseTimer);

            var that = this;
            this._unlockMouseTimer = setTimeout(function () {
                that._mouseLocked = false;
            }, this.EVENT_LOCK_TIMEOUT);

            return;
        }

        return this.callBase(e);
    },

    _fireEvent: function _fireEvent(args) {
        var isMouseEvent = eventUtils.isMouseEvent(args.originalEvent),
            normalizer = isMouseEvent ? MouseStrategy.normalize : TouchStrategy.normalize;

        return this.callBase(extend(normalizer(args.originalEvent), args));
    },

    dispose: function dispose() {
        this.callBase();
        this._skipNextEvents = false;
        this._mouseLocked = false;
        clearTimeout(this._unlockMouseTimer);
    }
});
MouseAndTouchStrategy.map = eventMap;
MouseAndTouchStrategy.resetObserver = MouseStrategy.resetObserver;

module.exports = MouseAndTouchStrategy;