Add the short score to the document title.

[remoteglot] / www / js / remoteglot.js

diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js
index d63b3789d07b0440372749e8228fb565f35d180c..9d83e55783168f841119c8666a91333be43e1f32 100644 (file)
--- a/www/js/remoteglot.js
+++ b/www/js/remoteglot.js
@@ -48,8 +48,8 @@ var highlight_to = undefined;
 /** @type {?jQuery} @private */
 var highlighted_move = null;
 
-/** @type {!number} @private */
-var unique = Math.random();
+/** @type {?number} @private */
+var unique = null;
 
 /** The current position on the board, represented as a FEN string.
  * @type {?string}
@@ -76,6 +76,28 @@ var current_display_line = null;
 /** @type {?number} @private */
 var current_display_move = null;
 
+var supports_html5_storage = function() {
+       try {
+               return 'localStorage' in window && window['localStorage'] !== null;
+       } catch (e) {
+               return false;
+       }
+}
+
+// Make the unique token persistent so people refreshing the page won't count twice.
+// Of course, you can never fully protect against people deliberately wanting to spam.
+var get_unique = function() {
+       var use_local_storage = supports_html5_storage();
+       if (use_local_storage && localStorage['unique']) {
+               return localStorage['unique'];
+       }
+       var unique = Math.random();
+       if (use_local_storage) {
+               localStorage['unique'] = unique;
+       }
+       return unique;
+}
+
 var request_update = function() {
        $.ajax({
                url: "http://analysis.sesse.net/analysis.pl?ims=" + ims + "&unique=" + unique
@@ -407,7 +429,7 @@ var add_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, opt_limit, opt_s
 var print_pv = function(line_num, pretty_pv, move_num, toplay, opt_limit, opt_showlast) {
        var pv = '';
        var i = 0;
-       if (opt_limit && opt_showlast) {
+       if (opt_limit && opt_showlast && pretty_pv.length > opt_limit) {
                // Truncate the PV at the beginning (instead of at the end).
                // We assume here that toplay is 'W'. We also assume that if
                // opt_showlast is set, then it is the history, and thus,
@@ -455,7 +477,7 @@ var update_highlight = function() {
 }
 
 var update_history = function() {
-       if (display_lines[0] === null) {
+       if (display_lines[0] === null || display_lines[0].pretty_pv.length == 0) {
                $("#history").html("No history");
        } else if (truncate_display_history) {
                $("#history").html(print_pv(0, display_lines[0].pretty_pv, 1, 'W', 8, true));
@@ -578,6 +600,10 @@ var update_board = function(data, num_viewers) {
        // The score.
        if (data['score'] !== null) {
                $("#score").text(data['score']);
+               var short_score = data['score'].replace(/Score: */, "");
+               document.title = '(' + short_score + ') analysis.sesse.net';
+       } else {
+               document.title = 'analysis.sesse.net';
        }
 
        // The search stats.
@@ -781,6 +807,7 @@ var update_displayed_line = function() {
 
                move = source + "-" + target;
                hiddenboard.move(move, false);
+               pos = hiddenboard.position();
 
                // Do promotion if needed.
                if (promo != "") {
@@ -808,6 +835,8 @@ var update_displayed_line = function() {
 }
 
 var init = function() {
+       unique = get_unique();
+
        // Create board.
        board = new window.ChessBoard('board', 'start');
        hiddenboard = new window.ChessBoard('hiddenboard', 'start');