jellyfin-web/dashboard-ui/scripts/musicartists.js

define(['jQuery'], function ($) {

    var data = {};
    function getPageData(context) {
        var key = getSavedQueryKey(context);
        var pageData = data[key];

        if (!pageData) {
            pageData = data[key] = {
                query: {
                    SortBy: "SortName",
                    SortOrder: "Ascending",
                    Recursive: true,
                    Fields: "PrimaryImageAspectRatio,SortName,DateCreated,SyncInfo,ItemCounts",
                    StartIndex: 0,
                    ImageTypeLimit: 1,
                    EnableImageTypes: "Primary,Backdrop,Banner,Thumb",
                    Limit: LibraryBrowser.getDefaultPageSize()
                },
                view: LibraryBrowser.getSavedView(key) || LibraryBrowser.getDefaultItemsView('Poster', 'Poster')
            };

            pageData.query.ParentId = LibraryMenu.getTopParentId();
            LibraryBrowser.loadSavedQueryValues(key, pageData.query);
        }
        return pageData;
    }

    function getQuery(context) {

        return getPageData(context).query;
    }

    function getSavedQueryKey(context) {

        if (!context.savedQueryKey) {
            context.savedQueryKey = LibraryBrowser.getSavedQueryKey('artists');
        }
        return context.savedQueryKey;
    }

    function reloadItems(page) {

        Dashboard.showLoadingMsg();

        var query = getQuery(page);

        ApiClient.getArtists(Dashboard.getCurrentUserId(), query).then(function (result) {

            // Scroll back up so they can see the results from the beginning
            window.scrollTo(0, 0);

            var view = getPageData(page).view;

            var html = '';
            var pagingHtml = LibraryBrowser.getQueryPagingHtml({
                startIndex: query.StartIndex,
                limit: query.Limit,
                totalRecordCount: result.TotalRecordCount,
                showLimit: false,
                updatePageSizeSetting: false,
                addLayoutButton: true,
                currentLayout: view,
                filterButton: true
            });

            page.querySelector('.listTopPaging').innerHTML = pagingHtml;

            updateFilterControls(page);

            if (view == "List") {

                html = LibraryBrowser.getListViewHtml({
                    items: result.Items,
                    context: 'music',
                    sortBy: query.SortBy
                });
            }
            else if (view == "Poster") {
                html = LibraryBrowser.getPosterViewHtml({
                    items: result.Items,
                    shape: "square",
                    context: 'music',
                    showTitle: true,
                    coverImage: true,
                    lazy: true,
                    centerText: true,
                    overlayPlayButton: true
                });
            }
            else if (view == "PosterCard") {

                html = LibraryBrowser.getPosterViewHtml({
                    items: result.Items,
                    shape: "square",
                    context: 'music',
                    showTitle: true,
                    coverImage: true,
                    lazy: true,
                    cardLayout: true,
                    showSongCount: true
                });
            }

            var elem = page.querySelector('#items');
            elem.innerHTML = html + pagingHtml;
            ImageLoader.lazyChildren(elem);

            $('.btnNextPage', page).on('click', function () {
                query.StartIndex += query.Limit;
                reloadItems(page);
            });

            $('.btnPreviousPage', page).on('click', function () {
                query.StartIndex -= query.Limit;
                reloadItems(page);
            });

            $('.btnChangeLayout', page).on('layoutchange', function (e, layout) {
                getPageData(page).view = layout;
                LibraryBrowser.saveViewSetting(getSavedQueryKey(page), layout);
                reloadItems(page);
            });

            $('.btnFilter', page).on('click', function () {
                showFilterMenu(page);
            });

            LibraryBrowser.saveQueryValues(getSavedQueryKey(page), query);
            LibraryBrowser.setLastRefreshed(page);
            Dashboard.hideLoadingMsg();
        });
    }

    function showFilterMenu(page) {

        require(['components/filterdialog/filterdialog'], function (filterDialogFactory) {

            var filterDialog = new filterDialogFactory({
                query: getQuery(page),
                mode: 'artists'
            });

            Events.on(filterDialog, 'filterchange', function () {
                reloadItems(page);
            });

            filterDialog.show();
        });
    }

    function updateFilterControls(tabContent) {

        var query = getQuery(tabContent);

        $('.alphabetPicker', tabContent).alphaValue(query.NameStartsWithOrGreater);
    }

    function initPage(tabContent) {

        $('.alphabetPicker', tabContent).on('alphaselect', function (e, character) {

            var query = getQuery(tabContent);

            query.NameStartsWithOrGreater = character;
            query.StartIndex = 0;

            reloadItems(tabContent);

        }).on('alphaclear', function (e) {

            var query = getQuery(tabContent);

            query.NameStartsWithOrGreater = '';

            reloadItems(tabContent);
        });
    }

    window.MusicPage.initArtistsTab = function (page, tabContent) {

        initPage(tabContent);
    };

    window.MusicPage.renderArtistsTab = function (page, tabContent) {

        if (LibraryBrowser.needsRefresh(tabContent)) {
            reloadItems(tabContent);
        }
    };

});