(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;
/** @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;
}
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');
var num_viewers = xhr.getResponseHeader('X-RGNV');
- possibly_play_sound(current_analysis_data, data);
+ var new_data;
if (Array.isArray(data)) {
- current_analysis_data = JSON_delta.patch(current_analysis_data, data);
+ new_data = JSON.parse(JSON.stringify(current_analysis_data));
+ JSON_delta.patch(new_data, data);
} else {
- current_analysis_data = data;
+ 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);
+ }
});
}
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;
}
}
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) {
}
update_history();
+ // Games currently in progress, if any.
+ $("#games").text("");
+ if (current_data['games']) {
+ var games_div = document.getElementById('games');
+ for (var game_num = 0; game_num < current_data['games'].length; ++game_num) {
+ var game = current_data['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", "javascript:switch_backend('" + game['url'] + "')");
+ game_a.appendChild(game_name);
+ game_span.appendChild(game_a);
+ }
+ games_div.appendChild(game_span);
+ }
+ }
+
// The headline. Names are always fetched from current_data;
// the rest can depend a bit.
var headline;
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
// from the history. This will work even if the fetch failed.
- last_move = format_move_with_number(
+ last_move = format_halfmove_with_number(
current_display_line.pretty_pv[current_display_move],
- Math.floor((current_display_move + 1) / 2) + 1,
- (current_display_move % 2 == 1));
+ current_display_move + 1);
headline += ' after ' + last_move;
} else if (data['position']['last_move'] !== 'none') {
last_move = format_move_with_number(
update_clock();
- // The engine id.
- if (data['id'] && data['id']['name'] !== null) {
- $("#engineid").text(data['id']['name']);
- }
-
// The score.
if (data['score'] !== null) {
$("#score").text(data['score']);
toplay = data['position']['toplay'];
refutation_lines = data['refutation_lines'];
update_refutation_lines();
+
+ // Update the sparkline last, since its size depends on how everything else reflowed.
+ update_sparkline(data);
+}
+
+var update_sparkline = function(data) {
+ if (data && data['score_history']) {
+ var first_move_num = undefined;
+ for (var halfmove_num in data['score_history']) {
+ halfmove_num = parseInt(halfmove_num);
+ if (first_move_num === undefined || halfmove_num < first_move_num) {
+ first_move_num = halfmove_num;
+ }
+ }
+ if (first_move_num !== undefined) {
+ var last_move_num = data['position']['move_num'] * 2 - 3;
+ if (data['position']['toplay'] === 'B') {
+ ++last_move_num;
+ }
+
+ // Possibly truncate some moves if we don't have enough width.
+ // FIXME: Sometimes width() for #scorecontainer (and by extent,
+ // #scoresparkcontainer) on Chrome for mobile seems to start off
+ // at something very small, and then suddenly snap back into place.
+ // Figure out why.
+ var max_moves = Math.floor($("#scoresparkcontainer").width() / 5) - 5;
+ if (last_move_num - first_move_num > max_moves) {
+ first_move_num = last_move_num - max_moves;
+ }
+
+ var min_score = -100;
+ var max_score = 100;
+ var last_score = null;
+ var scores = [];
+ for (var halfmove_num = first_move_num; halfmove_num <= last_move_num; ++halfmove_num) {
+ if (data['score_history'][halfmove_num]) {
+ var score = data['score_history'][halfmove_num][0];
+ if (score < min_score) min_score = score;
+ if (score > max_score) max_score = score;
+ last_score = data['score_history'][halfmove_num][0];
+ }
+ scores.push(last_score);
+ }
+ if (data['plot_score']) {
+ scores.push(data['plot_score']);
+ }
+ // FIXME: at some widths, calling sparkline() seems to push
+ // #scorecontainer under the board.
+ $("#scorespark").sparkline(scores, {
+ type: 'bar',
+ zeroColor: 'gray',
+ chartRangeMin: min_score,
+ chartRangeMax: max_score,
+ tooltipFormatter: function(sparkline, options, fields) {
+ return format_tooltip(data, fields[0].offset + first_move_num);
+ }
+ });
+ } else {
+ $("#scorespark").text("");
+ }
+ } else {
+ $("#scorespark").text("");
+ }
}
/**
return ret;
}
+/**
+ * @param {string} move
+ * @param {Number} halfmove_num
+ */
+var format_halfmove_with_number = function(move, halfmove_num) {
+ return format_move_with_number(
+ move,
+ Math.floor(halfmove_num / 2) + 1,
+ halfmove_num % 2 == 0);
+}
+
+/**
+ * @param {Object} data
+ * @param {Number} halfmove_num
+ */
+var format_tooltip = function(data, halfmove_num) {
+ if (data['score_history'][halfmove_num] ||
+ halfmove_num === data['position']['pretty_history'].length) {
+ var move;
+ var short_score;
+ if (halfmove_num === data['position']['pretty_history'].length) {
+ move = data['position']['last_move'];
+ short_score = data['short_score'];
+ } else {
+ move = data['position']['pretty_history'][halfmove_num];
+ short_score = data['score_history'][halfmove_num][1];
+ }
+ var move_with_number = format_halfmove_with_number(move, halfmove_num);
+
+ return "After " + move_with_number + ": " + short_score;
+ } else {
+ for (var i = halfmove_num; i --> 0; ) {
+ if (data['score_history'][i]) {
+ var move = data['position']['pretty_history'][i];
+ return "[Analysis kept from " + format_halfmove_with_number(move, i) + "]";
+ }
+ }
+ }
+}
+
/**
* @param {boolean} sort_by_score
*/
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);
+ }
});
}
+/**
+ * @param {string} fen
+ */
+var update_imbalance = function(fen) {
+ var hiddenboard = new Chess(fen);
+ var imbalance = {'k': 0, 'q': 0, 'r': 0, 'b': 0, 'n': 0, 'p': 0};
+ for (var row = 0; row < 8; ++row) {
+ for (var col = 0; col < 8; ++col) {
+ var col_text = String.fromCharCode('a1'.charCodeAt(0) + col);
+ var row_text = String.fromCharCode('a1'.charCodeAt(1) + row);
+ var square = col_text + row_text;
+ var contents = hiddenboard.get(square);
+ if (contents !== null) {
+ if (contents.color === 'w') {
+ ++imbalance[contents.type];
+ } else {
+ --imbalance[contents.type];
+ }
+ }
+ }
+ }
+ var white_imbalance = '';
+ var black_imbalance = '';
+ for (var piece in imbalance) {
+ for (var i = 0; i < imbalance[piece]; ++i) {
+ white_imbalance += '<img src="img/chesspieces/wikipedia/w' + piece.toUpperCase() + '.png" alt="" style="width: 15px;height: 15px;">';
+ }
+ for (var i = 0; i < -imbalance[piece]; ++i) {
+ black_imbalance += '<img src="img/chesspieces/wikipedia/b' + piece.toUpperCase() + '.png" alt="" style="width: 15px;height: 15px;">';
+ }
+ }
+ $('#whiteimbalance').html(white_imbalance);
+ $('#blackimbalance').html(black_imbalance);
+}
+
var update_displayed_line = function() {
if (highlighted_move !== null) {
highlighted_move.removeClass('highlight');
$("#linenav").hide();
$("#linemsg").show();
board.position(fen);
+ update_imbalance(fen);
return;
}
var hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pretty_pv, current_display_move);
board.position(hiddenboard.fen());
+ update_imbalance(hiddenboard.fen());
}
/**
}
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();
request_update();
$(window).resize(function() {
board.resize();
+ update_sparkline(displayed_analysis_data || current_analysis_data);
update_highlight();
redraw_arrows();
});
projects / remoteglot / blobdiff