define(["require", "exports", "tslib", "react", "office-ui-fabric-react/lib/Utilities", "office-ui-fabric-react/lib/FocusZone", "office-ui-fabric-react/lib/Button", "office-ui-fabric-react/lib/List", "office-ui-fabric-react/lib/TextField", "./List.Scrolling.Example.scss"], function (require, exports, tslib_1, React, Utilities_1, FocusZone_1, Button_1, List_1, TextField_1) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var evenItemHeight = 25;
    var oddItemHeight = 50;
    var numberOfItemsOnPage = 10;
    var ListScrollingExample = (function (_super) {
        tslib_1.__extends(ListScrollingExample, _super);
        function ListScrollingExample(props) {
            var _this = _super.call(this, props) || this;
            _this.state = {
                selectedIndex: 0
            };
            return _this;
        }
        ListScrollingExample.prototype.render = function () {
            var items = this.props.items;
            return (React.createElement(FocusZone_1.FocusZone, { direction: FocusZone_1.FocusZoneDirection.vertical },
                React.createElement("div", null,
                    React.createElement(Button_1.DefaultButton, { onClick: this._scrollRelative(-10) }, "-10"),
                    React.createElement(Button_1.DefaultButton, { onClick: this._scrollRelative(-1) }, "-1"),
                    React.createElement(Button_1.DefaultButton, { onClick: this._scrollRelative(1) }, "+1"),
                    React.createElement(Button_1.DefaultButton, { onClick: this._scrollRelative(10) }, "+10")),
                React.createElement("div", null,
                    "Scroll item index:",
                    React.createElement(TextField_1.TextField, { value: this.state.selectedIndex.toString(10), onChanged: this._onChangeText })),
                React.createElement("div", { className: 'ms-ListScrollingExample-container', "data-is-scrollable": true },
                    React.createElement(List_1.List, { ref: this._resolveList, items: items, getPageHeight: this._getPageHeight, onRenderCell: this._onRenderCell }))));
        };
        ListScrollingExample.prototype._getPageHeight = function (idx) {
            var h = 0;
            for (var i = idx; i < idx + numberOfItemsOnPage; ++i) {
                var isEvenRow = i % 2 === 0;
                h += isEvenRow ? evenItemHeight : oddItemHeight;
            }
            return h;
        };
        ListScrollingExample.prototype._onChangeText = function (value) {
            this._scroll(parseInt(value, 10) || 0);
        };
        ListScrollingExample.prototype._onRenderCell = function (item, index) {
            return (React.createElement("div", { className: 'ms-ListScrollingExample-itemCell', "data-is-focusable": true },
                React.createElement("div", { className: Utilities_1.css('ms-ListScrollingExample-itemContent', (index % 2 === 0) && 'ms-ListScrollingExample-itemContent-even', (index % 2 === 1) && 'ms-ListScrollingExample-itemContent-odd') },
                    index,
                    " \u00A0 ",
                    item.name)));
        };
        ListScrollingExample.prototype._scrollRelative = function (delta) {
            var _this = this;
            return function () {
                _this._scroll(_this.state.selectedIndex + delta);
            };
        };
        ListScrollingExample.prototype._scroll = function (index) {
            var _this = this;
            var updatedSelectedIndex = Math.min(Math.max(index, 0), this.props.items.length - 1);
            this.setState({
                selectedIndex: updatedSelectedIndex
            }, function () {
                _this._list.scrollToIndex(updatedSelectedIndex, function (idx) { return idx % 2 === 0 ? evenItemHeight : oddItemHeight; });
            });
        };
        ListScrollingExample.prototype._resolveList = function (list) {
            this._list = list;
        };
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ListScrollingExample.prototype, "_onChangeText", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ListScrollingExample.prototype, "_resolveList", null);
        return ListScrollingExample;
    }(React.Component));
    exports.ListScrollingExample = ListScrollingExample;
});
//# sourceMappingURL=List.Scrolling.Example.js.map