opds-web-client
Version:
95 lines (94 loc) • 5.41 kB
JavaScript
"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 React = require("react");
var Book_1 = require("./Book");
var CatalogLink_1 = require("./CatalogLink");
var Lanes_1 = require("./Lanes");
var FacetGroup_1 = require("./FacetGroup");
var SkipNavigationLink_1 = require("./SkipNavigationLink");
var Collection = (function (_super) {
__extends(Collection, _super);
function Collection(props) {
var _this = _super.call(this, props) || this;
_this.fetch = _this.fetch.bind(_this);
return _this;
}
Collection.prototype.render = function () {
var _this = this;
var hasFacets = (this.props.collection.facetGroups && this.props.collection.facetGroups.length > 0);
return (React.createElement("div", { className: "collection" },
hasFacets && (React.createElement("div", { className: "facet-groups", role: "complementary", "aria-label": "filters" },
React.createElement(SkipNavigationLink_1.default, { target: "#collection-main", label: "filters" }),
this.props.collection.facetGroups.map(function (facetGroup) {
return React.createElement(FacetGroup_1.default, { key: facetGroup.label, facetGroup: facetGroup });
}))),
React.createElement("div", { id: "collection-main", className: "collection-main", ref: "collection-main", "aria-label": "books in " + this.props.collection.title },
(this.props.collection.lanes && this.props.collection.lanes.length > 0) ?
React.createElement(Lanes_1.Lanes, { url: this.props.collection.url, lanes: this.props.collection.lanes }) : null,
this.props.collection.books &&
React.createElement("ul", { "aria-label": "books", className: "subtle-list books" }, this.props.collection.books.map(function (book, index) {
return React.createElement("li", { key: index },
React.createElement(Book_1.default, { book: book, collectionUrl: _this.props.collection.url }));
})),
this.props.collection.navigationLinks &&
React.createElement("ul", { "aria-label": "navigation links", className: "navigation-links subtle-list", role: "navigation" }, this.props.collection.navigationLinks.map(function (link, index) {
return React.createElement("li", { key: index },
React.createElement(CatalogLink_1.default, { collectionUrl: link.url }, link.text));
})),
this.isEmpty() &&
React.createElement("div", { className: "empty-collection-message" }, "No books here."),
this.canFetch() &&
React.createElement("button", { className: "next-page-link visually-hidden", onClick: this.fetch }, "Load more books"),
this.props.isFetchingPage &&
React.createElement("div", { className: "loading-next-page" },
React.createElement("h3", null, "Loading more books...")))));
};
Collection.prototype.componentWillReceiveProps = function (nextProps) {
if (this.props.isFetching && !nextProps.isFetching && !nextProps.error) {
this.refs["collection-main"].scrollTop = 0;
}
// the component might be loading a new collection that doesn't fill the page
this.handleScrollOrResize();
};
Collection.prototype.componentDidMount = function () {
var body = this.refs["collection-main"];
body.addEventListener("scroll", this.handleScrollOrResize.bind(this));
window.addEventListener("resize", this.handleScrollOrResize.bind(this));
// the first page might not fill the screen on initial load, so run handler once
this.handleScrollOrResize();
};
Collection.prototype.componentWillUnmount = function () {
var body = this.refs["collection-main"];
body.removeEventListener("scroll", this.handleScrollOrResize.bind(this));
window.removeEventListener("resize", this.handleScrollOrResize.bind(this));
};
Collection.prototype.canFetch = function () {
return !this.props.hidden && !this.props.isFetchingPage && this.props.collection.nextPageUrl;
};
Collection.prototype.fetch = function () {
if (this.canFetch()) {
this.props.fetchPage(this.props.collection.nextPageUrl);
}
};
Collection.prototype.handleScrollOrResize = function () {
var main = this.refs["collection-main"];
var scrollTop = main.scrollTop;
var scrollHeight = main.scrollHeight;
var clientHeight = main.clientHeight;
if ((scrollTop + clientHeight) >= scrollHeight) {
this.fetch();
}
};
Collection.prototype.isEmpty = function () {
return this.props.collection.lanes.length === 0 &&
this.props.collection.books.length === 0 &&
this.props.collection.navigationLinks.length === 0;
};
return Collection;
}(React.Component));
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = Collection;