define(["require", "exports", "tslib", "react", "./DraggableZone.styles", "../../Utilities"], function (require, exports, tslib_1, React, DraggableZone_styles_1, Utilities_1) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var eventMapping = {
        touch: {
            start: 'touchstart',
            move: 'touchmove',
            stop: 'touchend'
        },
        mouse: {
            start: 'mousedown',
            move: 'mousemove',
            stop: 'mouseup'
        }
    };
    var DraggableZone = /** @class */ (function (_super) {
        tslib_1.__extends(DraggableZone, _super);
        function DraggableZone(props) {
            var _this = _super.call(this, props) || this;
            _this._currentEventType = eventMapping.mouse;
            _this._events = [];
            _this._onMouseDown = function (event) {
                var onMouseDown = React.Children.only(_this.props.children).props.onMouseDown;
                if (onMouseDown) {
                    onMouseDown(event);
                }
                _this._currentEventType = eventMapping.mouse;
                return _this._onDragStart(event);
            };
            _this._onMouseUp = function (event) {
                var onMouseUp = React.Children.only(_this.props.children).props.onMouseUp;
                if (onMouseUp) {
                    onMouseUp(event);
                }
                _this._currentEventType = eventMapping.mouse;
                return _this._onDragStop(event);
            };
            _this._onTouchStart = function (event) {
                var onTouchStart = React.Children.only(_this.props.children).props.onTouchStart;
                if (onTouchStart) {
                    onTouchStart(event);
                }
                _this._currentEventType = eventMapping.touch;
                return _this._onDragStart(event);
            };
            _this._onTouchEnd = function (event) {
                var onTouchEnd = React.Children.only(_this.props.children).props.onTouchEnd;
                if (onTouchEnd) {
                    onTouchEnd(event);
                }
                _this._currentEventType = eventMapping.touch;
                _this._onDragStop(event);
            };
            _this._onDragStart = function (event) {
                // Only handle left click for dragging
                if (typeof event.button === 'number' && event.button !== 0) {
                    return false;
                }
                // If the target doesn't match the handleSelector OR
                // if the target does match the preventDragSelector, bail out
                if ((_this.props.handleSelector && !_this._matchesSelector(event.target, _this.props.handleSelector)) ||
                    (_this.props.preventDragSelector && _this._matchesSelector(event.target, _this.props.preventDragSelector))) {
                    return;
                }
                // Remember the touch identifier if this is a touch event so we can
                // distinguish between individual touches in multitouch scenarios
                // by remembering which touch point we were given
                _this._touchId = _this._getTouchId(event);
                var position = _this._getControlPosition(event);
                if (position === undefined) {
                    return;
                }
                var dragData = _this._createDragDataFromPosition(position);
                _this.props.onStart && _this.props.onStart(event, dragData);
                _this.setState({
                    isDragging: true,
                    lastPosition: position
                });
                // hook up the appropriate mouse/touch events to the body to ensure
                // smooth dragging
                _this._events = [
                    Utilities_1.on(document.body, _this._currentEventType.move, _this._onDrag),
                    Utilities_1.on(document.body, _this._currentEventType.stop, _this._onDragStop)
                ];
            };
            _this._onDrag = function (event) {
                // Prevent scrolling on mobile devices
                if (event.type === 'touchmove') {
                    event.preventDefault();
                }
                var position = _this._getControlPosition(event);
                if (!position) {
                    return;
                }
                // create the updated drag data from the position data
                var updatedData = _this._createUpdatedDragData(_this._createDragDataFromPosition(position));
                var updatedPosition = updatedData.position;
                _this.props.onDragChange && _this.props.onDragChange(event, updatedData);
                _this.setState({
                    position: updatedPosition,
                    lastPosition: position
                });
            };
            _this._onDragStop = function (event) {
                if (!_this.state.isDragging) {
                    return;
                }
                var position = _this._getControlPosition(event);
                if (!position) {
                    return;
                }
                var baseDragData = _this._createDragDataFromPosition(position);
                // Set dragging to false and reset the lastPosition
                _this.setState({
                    isDragging: false,
                    lastPosition: undefined
                });
                _this.props.onStop && _this.props.onStop(event, baseDragData);
                if (_this.props.position) {
                    _this.setState({
                        position: _this.props.position
                    });
                }
                // Remove event handlers
                _this._events.forEach(function (dispose) { return dispose(); });
            };
            _this.state = {
                isDragging: false,
                position: _this.props.position || { x: 0, y: 0 },
                lastPosition: undefined
            };
            return _this;
        }
        DraggableZone.prototype.componentDidUpdate = function (prevProps) {
            if (this.props.position && (!prevProps.position || this.props.position !== prevProps.position)) {
                this.setState({ position: this.props.position });
            }
        };
        DraggableZone.prototype.componentWillUnmount = function () {
            this._events.forEach(function (dispose) { return dispose(); });
        };
        DraggableZone.prototype.render = function () {
            var child = React.Children.only(this.props.children);
            var props = child.props;
            var position = this.props.position;
            var _a = this.state, statePosition = _a.position, isDragging = _a.isDragging;
            var x = statePosition.x;
            var y = statePosition.y;
            if (position && !isDragging) {
                x = position.x;
                y = position.y;
            }
            return React.cloneElement(child, {
                style: tslib_1.__assign({}, props.style, { transform: "translate(" + x + "px, " + y + "px)" }),
                className: DraggableZone_styles_1.getClassNames(props.className, this.state.isDragging).root,
                onMouseDown: this._onMouseDown,
                onMouseUp: this._onMouseUp,
                onTouchStart: this._onTouchStart,
                onTouchEnd: this._onTouchEnd
            });
        };
        /**
         * Get the control position based off the event that fired
         * @param event - The event to get offsets from
         */
        DraggableZone.prototype._getControlPosition = function (event) {
            var touchObj = this._getActiveTouch(event);
            // did we get the right touch?
            if (this._touchId !== undefined && !touchObj) {
                return undefined;
            }
            var eventToGetOffset = touchObj || event;
            return {
                x: eventToGetOffset.clientX,
                y: eventToGetOffset.clientY
            };
        };
        /**
         * Get the active touch point that we have saved from the event's TouchList
         * @param event - The event used to get the TouchList for the active touch point
         */
        DraggableZone.prototype._getActiveTouch = function (event) {
            return ((event.targetTouches && this._findTouchInTouchList(event.targetTouches)) ||
                (event.changedTouches && this._findTouchInTouchList(event.changedTouches)));
        };
        /**
         * Get the initial touch identifier associated with the given event
         * @param event - The event that contains the TouchList
         */
        DraggableZone.prototype._getTouchId = function (event) {
            var touch = (event.targetTouches && event.targetTouches[0]) || (event.changedTouches && event.changedTouches[0]);
            if (touch) {
                return touch.identifier;
            }
        };
        /**
         * Returns if an element (or any of the element's parents) match the given selector
         */
        DraggableZone.prototype._matchesSelector = function (element, selector) {
            if (!element || element === document.body) {
                return false;
            }
            /* tslint:disable-next-line:no-string-literal */
            var matchesSelectorFn = element.matches || element.webkitMatchesSelector || element.msMatchesSelector /* for IE */;
            if (!matchesSelectorFn) {
                return false;
            }
            return matchesSelectorFn.call(element, selector) || this._matchesSelector(element.parentElement, selector);
        };
        /**
         * Attempts to find the Touch that matches the identifier  we stored in dragStart
         * @param touchList The TouchList to look for the stored identifier from dragStart
         */
        DraggableZone.prototype._findTouchInTouchList = function (touchList) {
            if (this._touchId === undefined) {
                return;
            }
            for (var i = 0; i < touchList.length; i++) {
                if (touchList[i].identifier === this._touchId) {
                    return touchList[i];
                }
            }
            return undefined;
        };
        /**
         * Create DragData based off of the last known position and the new position passed in
         * @param position The new position as part of the drag
         */
        DraggableZone.prototype._createDragDataFromPosition = function (position) {
            var lastPosition = this.state.lastPosition;
            // If we have no lastPosition, use the given position
            // for last position
            if (lastPosition === undefined) {
                return {
                    delta: { x: 0, y: 0 },
                    lastPosition: position,
                    position: position
                };
            }
            return {
                delta: {
                    x: position.x - lastPosition.x,
                    y: position.y - lastPosition.y
                },
                lastPosition: lastPosition,
                position: position
            };
        };
        /**
         * Creates an updated DragData based off the current position and given baseDragData
         * @param baseDragData The base DragData (gotten from _createDragDataFromPosition) used to calculate the updated positions
         */
        DraggableZone.prototype._createUpdatedDragData = function (baseDragData) {
            var position = this.state.position;
            return {
                position: {
                    x: position.x + baseDragData.delta.x,
                    y: position.y + baseDragData.delta.y
                },
                delta: baseDragData.delta,
                lastPosition: position
            };
        };
        return DraggableZone;
    }(React.Component));
    exports.DraggableZone = DraggableZone;
});
//# sourceMappingURL=DraggableZone.js.map