+ if (white_clock_ms === null || black_clock_ms === null) {
+ $("#whiteclock").empty();
+ $("#blackclock").empty();
+ return;
+ }
+
+ // If either player has ten minutes or less left, add the second counters.
+ var show_seconds = (white_clock_ms < 60 * 10 * 1000 || black_clock_ms < 60 * 10 * 1000);
+
+ if (color) {
+ // See when the clock will change next, and update right after that.
+ var next_update_ms;
+ if (show_seconds) {
+ next_update_ms = remaining_ms % 1000 + 100;
+ } else {
+ next_update_ms = remaining_ms % 60000 + 100;
+ }
+ clock_timer = setTimeout(update_clock, next_update_ms);
+ }
+
+ $("#whiteclock").text(format_clock(white_clock_ms, show_seconds));
+ $("#blackclock").text(format_clock(black_clock_ms, show_seconds));
+}
+
+/**
+ * @param {Number} remaining_ms
+ * @param {boolean} show_seconds
+ */
+var format_clock = function(remaining_ms, show_seconds) {
+ if (remaining_ms <= 0) {
+ if (show_seconds) {
+ return "00:00:00";
+ } else {
+ return "00:00";
+ }
+ }
+
+ var remaining = Math.floor(remaining_ms / 1000);
+ var seconds = remaining % 60;
+ remaining = (remaining - seconds) / 60;
+ var minutes = remaining % 60;
+ remaining = (remaining - minutes) / 60;
+ var hours = remaining;
+ if (show_seconds) {
+ return format_2d(hours) + ":" + format_2d(minutes) + ":" + format_2d(seconds);
+ } else {
+ return format_2d(hours) + ":" + format_2d(minutes);
+ }
+}
+
+/**
+ * @param {Number} x
+ */
+var format_2d = function(x) {
+ if (x >= 10) {
+ return x;
+ } else {
+ return "0" + x;
+ }
+}
+
+/**
+ * @param {string} move
+ * @param {Number} move_num
+ * @param {boolean} white_to_play
+ */
+var format_move_with_number = function(move, move_num, white_to_play) {
+ var ret;
+ if (white_to_play) {
+ ret = (move_num - 1) + '… ';
+ } else {
+ ret = move_num + '. ';
+ }
+ ret += move;
+ return ret;
+}
+
+/**
+ * @param {boolean} sort_by_score
+ */
+var resort_refutation_lines = function(sort_by_score) {
+ sort_refutation_lines_by_score = sort_by_score;
+ if (supports_html5_storage()) {
+ localStorage['sort_refutation_lines_by_score'] = sort_by_score ? 1 : 0;
+ }
+ update_refutation_lines();
+}
+window['resort_refutation_lines'] = resort_refutation_lines;
+
+/**
+ * @param {boolean} truncate_history
+ */
+var set_truncate_history = function(truncate_history) {
+ truncate_display_history = truncate_history;
+ update_refutation_lines();
+}
+window['set_truncate_history'] = set_truncate_history;
+
+/**
+ * @param {number} line_num
+ * @param {number} move_num
+ */
+var show_line = function(line_num, move_num) {
+ if (line_num == -1) {
+ current_display_line = null;
+ current_display_move = null;
+ if (displayed_analysis_data) {
+ // TODO: Support exiting to history position if we are in an
+ // analysis line of a history position.
+ displayed_analysis_data = null;
+ update_board(current_analysis_data, displayed_analysis_data);
+ }
+ } else {
+ current_display_line = display_lines[line_num];
+ current_display_move = move_num;
+ }
+ current_display_line_is_history = (line_num == 0);
+
+ update_historic_analysis();
+ update_displayed_line();
+ update_highlight();
+ redraw_arrows();
+}
+window['show_line'] = show_line;
+
+var prev_move = function() {
+ if (current_display_move > -1) {
+ --current_display_move;
+ }
+ update_historic_analysis();
+ update_displayed_line();
+}
+window['prev_move'] = prev_move;
+
+var next_move = function() {
+ if (current_display_line && current_display_move < current_display_line.pretty_pv.length - 1) {
+ ++current_display_move;
+ }
+ update_historic_analysis();
+ update_displayed_line();
+}
+window['next_move'] = next_move;
+
+var update_historic_analysis = function() {
+ if (!current_display_line_is_history) {
+ return;
+ }
+ if (current_display_move == current_display_line.pretty_pv.length - 1) {
+ displayed_analysis_data = null;
+ update_board(current_analysis_data, displayed_analysis_data);
+ }
+
+ // Fetch old analysis for this line if it exists.
+ var hiddenboard = chess_from(null, current_display_line.pretty_pv, current_display_move);
+ var filename = "/history/move" + (current_display_move + 1) + "-" +
+ hiddenboard.fen().replace(/ /g, '_').replace(/\//g, '-') + ".json";
+
+ $.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);
+ });
+}
+
+/**
+ * @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;">';
+ }