X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=www%2Fjs%2Fremoteglot.js;h=6819cb99eea1c64812ab258bbe9c97a1d5d48644;hp=440419fd0062eb702e5f928655b1e22b0092ef13;hb=3cd5b7514f30340adfd106469b6de44237af5113;hpb=d6e53996bae7bd8b01dfb6ed8e61a573bd9157cb diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js index 440419f..6819cb9 100644 --- a/www/js/remoteglot.js +++ b/www/js/remoteglot.js @@ -1,5 +1,22 @@ (function() { +/** + * Version of this script. If the server returns a version larger than + * this, it is a sign we should reload to upgrade ourselves. + * + * @type {Number} + * @const + * @private */ +var SCRIPT_VERSION = 2015062104; + +/** + * The current backend URL. + * + * @type {!string} + * @private + */ +var backend_url = "/analysis.pl"; + /** @type {window.ChessBoard} @private */ var board = null; @@ -20,6 +37,18 @@ var current_analysis_data = null; */ var displayed_analysis_data = null; +/** + * Games currently in progress, if any. + * + * @type {?Array.<{ + * name: string, + * url: string, + * id: string, + * }>} + * @private + */ +var current_games = null; + /** @type {Array.<{ * from_col: number, * from_row: number, @@ -108,6 +137,32 @@ var current_display_line_is_history = false; /** @type {?number} @private */ var current_display_move = null; +/** + * The current backend request to get main analysis (not history), if any, + * so that we can abort it. + * + * @type {?jqXHR} + * @private + */ +var current_analysis_xhr = null; + +/** + * The current timer to fire off a request to get main analysis (not history), + * if any, so that we can abort it. + * + * @type {?Number} + * @private + */ +var current_analysis_request_timer = null; + +/** + * The current backend request to get historic data, if any. + * + * @type {?jqXHR} + * @private + */ +var current_historic_xhr = null; + var supports_html5_storage = function() { try { return 'localStorage' in window && window['localStorage'] !== null; @@ -131,8 +186,10 @@ var get_unique = function() { } var request_update = function() { - $.ajax({ - url: "/analysis.pl?ims=" + ims + "&unique=" + unique + current_analysis_request_timer = null; + + current_analysis_xhr = $.ajax({ + url: backend_url + "?ims=" + ims + "&unique=" + unique }).done(function(data, textstatus, xhr) { sync_server_clock(xhr.getResponseHeader('Date')); ims = xhr.getResponseHeader('X-RGLM'); @@ -144,16 +201,28 @@ var request_update = function() { } else { new_data = data; } + + var minimum_version = xhr.getResponseHeader('X-RGMV'); + if (minimum_version && minimum_version > SCRIPT_VERSION) { + // Upgrade to latest version with a force-reload. + location.reload(true); + } + possibly_play_sound(current_analysis_data, new_data); current_analysis_data = new_data; update_board(current_analysis_data, displayed_analysis_data); update_num_viewers(num_viewers); // Next update. - setTimeout(function() { request_update(); }, 100); - }).fail(function() { - // Wait ten seconds, then try again. - setTimeout(function() { request_update(); }, 10000); + current_analysis_request_timer = setTimeout(function() { request_update(); }, 100); + }).fail(function(jqXHR, textStatus, errorThrown) { + if (textStatus === "abort") { + // Aborted because we are switching backends. Abandon and don't retry, + // because another one is already started for us. + } else { + // Backend error or similar. Wait ten seconds, then try again. + current_analysis_request_timer = setTimeout(function() { request_update(); }, 10000); + } }); } @@ -195,7 +264,9 @@ var sync_server_clock = function(server_date_string) { var clear_arrows = function() { for (var i = 0; i < arrows.length; ++i) { if (arrows[i].svg) { - arrows[i].svg.parentElement.removeChild(arrows[i].svg); + if (arrows[i].svg.parentElement) { + arrows[i].svg.parentElement.removeChild(arrows[i].svg); + } delete arrows[i].svg; } } @@ -310,7 +381,9 @@ var point_from_end = function(x1, y1, x2, y2, t, u) { var position_arrow = function(arrow) { if (arrow.svg) { - arrow.svg.parentElement.removeChild(arrow.svg); + if (arrow.svg.parentElement) { + arrow.svg.parentElement.removeChild(arrow.svg); + } delete arrow.svg; } if (current_display_line !== null && !current_display_line_is_history) { @@ -658,6 +731,51 @@ var chess_from = function(fen, moves, last_move) { return hiddenboard; } +var update_game_list = function(games) { + $("#games").text(""); + if (games === null) { + return; + } + + var games_div = document.getElementById('games'); + for (var game_num = 0; game_num < games.length; ++game_num) { + var game = games[game_num]; + var game_span = document.createElement("span"); + game_span.setAttribute("class", "game"); + + var game_name = document.createTextNode(game['name']); + if (game['url'] === backend_url) { + game_span.appendChild(game_name); + } else { + var game_a = document.createElement("a"); + game_a.setAttribute("href", "#" + game['id']); + game_a.appendChild(game_name); + game_span.appendChild(game_a); + } + games_div.appendChild(game_span); + } +} + +/** + * Try to find a running game that matches with the current hash, + * and switch to it if we're not already displaying it. + */ +var possibly_switch_game_from_hash = function() { + if (current_games === null) { + return; + } + + var hash = window.location.hash.replace(/^#/,''); + for (var i = 0; i < current_games.length; ++i) { + if (current_games[i]['id'] === hash) { + if (backend_url !== current_games[i]['url']) { + switch_backend(current_games[i]['url']); + } + return; + } + } +} + /** * @param {Object} data * @param {?Object} display_data @@ -677,6 +795,16 @@ var update_board = function(current_data, display_data) { } update_history(); + // Games currently in progress, if any. + if (current_data['games']) { + current_games = current_data['games']; + possibly_switch_game_from_hash(); + update_game_list(current_data['games']); + } else { + current_games = null; + update_game_list(null); + } + // The headline. Names are always fetched from current_data; // the rest can depend a bit. var headline; @@ -688,6 +816,50 @@ var update_board = function(current_data, display_data) { headline = 'Analysis'; } + // Credits, where applicable. Note that we don't want the footer to change a lot + // when e.g. viewing history, so if any of these changed during the game, + // use the current one still. + if (current_data['using_lomonosov']) { + $("#lomonosov").show(); + } else { + $("#lomonosov").hide(); + } + + // Credits: The engine name/version. + if (current_data['engine'] && current_data['engine']['name'] !== null) { + $("#engineid").text(current_data['engine']['name']); + } + + // Credits: The engine URL. + if (current_data['engine'] && current_data['engine']['url']) { + $("#engineid").attr("href", current_data['engine']['url']); + } else { + $("#engineid").removeAttr("href"); + } + + // Credits: Engine details. + if (current_data['engine'] && current_data['engine']['details']) { + $("#enginedetails").text(" (" + current_data['engine']['details'] + ")"); + } else { + $("#enginedetails").text(""); + } + + // Credits: Move source, possibly with URL. + if (current_data['move_source'] && current_data['move_source_url']) { + $("#movesource").text("Moves provided by "); + var movesource_a = document.createElement("a"); + movesource_a.setAttribute("href", current_data['move_source_url']); + var movesource_text = document.createTextNode(current_data['move_source']); + movesource_a.appendChild(movesource_text); + var movesource_period = document.createTextNode("."); + document.getElementById("movesource").appendChild(movesource_a); + document.getElementById("movesource").appendChild(movesource_period); + } else if (current_data['move_source']) { + $("#movesource").text("Moves provided by " + current_data['move_source'] + "."); + } else { + $("#movesource").text(""); + } + var last_move; if (display_data) { // Displaying some non-current position, pick out the last move @@ -756,11 +928,6 @@ var update_board = function(current_data, display_data) { update_clock(); - // The engine id. - if (data['id'] && data['id']['name'] !== null) { - $("#engineid").text(data['id']['name']); - } - // The score. if (data['score'] !== null) { $("#score").text(data['score']); @@ -1193,14 +1360,19 @@ var update_historic_analysis = function() { var filename = "/history/move" + (current_display_move + 1) + "-" + hiddenboard.fen().replace(/ /g, '_').replace(/\//g, '-') + ".json"; - $.ajax({ + current_historic_xhr = $.ajax({ url: filename }).done(function(data, textstatus, xhr) { displayed_analysis_data = data; update_board(current_analysis_data, displayed_analysis_data); - }).fail(function() { - displayed_analysis_data = {'failed': true}; - update_board(current_analysis_data, displayed_analysis_data); + }).fail(function(jqXHR, textStatus, errorThrown) { + if (textStatus === "abort") { + // Aborted because we are switching backends. Don't do anything; + // we will already have been cleared. + } else { + displayed_analysis_data = {'failed': true}; + update_board(current_analysis_data, displayed_analysis_data); + } }); } @@ -1299,6 +1471,38 @@ var set_sound = function(param_enable_sound) { } window['set_sound'] = set_sound; +/** + * @param {string} new_backend_url + */ +var switch_backend = function(new_backend_url) { + // Stop looking at historic data. + current_display_line = null; + current_display_move = null; + displayed_analysis_data = null; + if (current_historic_xhr) { + current_historic_xhr.abort(); + } + + // If we already have a backend response going, abort it. + if (current_analysis_xhr) { + current_analysis_xhr.abort(); + } + + // Otherwise, we should have a timer going to start a new one. + // Kill that, too. + if (current_analysis_request_timer) { + clearTimeout(current_analysis_request_timer); + current_analysis_request_timer = null; + } + + // Request an immediate fetch with the new backend. + backend_url = new_backend_url; + current_analysis_data = null; + ims = 0; + request_update(); +} +window['switch_backend'] = switch_backend; + var init = function() { unique = get_unique(); @@ -1331,6 +1535,7 @@ var init = function() { prev_move(); } }); + window.addEventListener('hashchange', possibly_switch_game_from_hash, false); }; $(document).ready(init);