Explicitly prefer Opus over MP3.

[remoteglot] / www / js / remoteglot.js

diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js
index cdf8a5670e4b48971270d3d31da125564e5d1735..3574453fa411b31bdaa926650437cd26a16cde98 100644 (file)
--- a/www/js/remoteglot.js
+++ b/www/js/remoteglot.js
@@ -65,6 +65,9 @@ var highlighted_move = null;
 /** @type {?number} @private */
 var unique = null;
 
+/** @type {boolean} @private */
+var enable_sound = false;
+
 /** The current position on the board, represented as a FEN string.
  * @type {?string}
  * @private
@@ -121,6 +124,7 @@ var request_update = function() {
        }).done(function(data, textstatus, xhr) {
                ims = xhr.getResponseHeader('X-Remoteglot-Last-Modified');
                var num_viewers = xhr.getResponseHeader('X-Remoteglot-Num-Viewers');
+               possibly_play_sound(current_analysis_data, data);
                current_analysis_data = data;
                update_board(current_analysis_data, displayed_analysis_data);
                update_num_viewers(num_viewers);
@@ -133,6 +137,24 @@ var request_update = function() {
        });
 }
 
+var possibly_play_sound = function(old_data, new_data) {
+       if (!enable_sound) {
+               return;
+       }
+       if (old_data === null) {
+               return;
+       }
+       var ding = document.getElementById('ding');
+       if (ding && ding.play) {
+               if (old_data['position'] && old_data['position']['fen'] &&
+                   new_data['position'] && new_data['position']['fen'] &&
+                   (old_data['position']['fen'] !== new_data['position']['fen'] ||
+                    old_data['position']['move_num'] !== new_data['position']['move_num'])) {
+                       ding.play();
+               }
+       }
+}
+
 var clear_arrows = function() {
        for (var i = 0; i < arrows.length; ++i) {
                if (arrows[i].svg) {
@@ -630,7 +652,7 @@ var update_board = function(current_data, display_data) {
        // The <title> contains a very brief headline.
        var title_elems = [];
        if (data['short_score'] !== undefined && data['short_score'] !== null) {
-               title_elems.push(data['short_score']);
+               title_elems.push(data['short_score'].replace(/^ /, ""));
        }
        if (last_move !== null) {
                title_elems.push(last_move);
@@ -671,6 +693,7 @@ var update_board = function(current_data, display_data) {
                refutation_lines = [];
                update_refutation_lines();
                clear_arrows();
+               update_displayed_line();
                return;
        }
 
@@ -806,6 +829,9 @@ var format_move_with_number = function(move, move_num, white_to_play) {
  */
 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;
@@ -929,9 +955,47 @@ var update_displayed_line = function() {
        board.position(hiddenboard.fen());
 }
 
+/**
+ * @param {boolean} param_enable_sound
+ */
+var set_sound = function(param_enable_sound) {
+       enable_sound = param_enable_sound;
+       if (enable_sound) {
+               $("#soundon").html("<strong>On</strong>");
+               $("#soundoff").html("<a href=\"javascript:set_sound(false)\">Off</a>");
+
+               // Seemingly at least Firefox prefers MP3 over Opus; tell it otherwise,
+               // and also preload the file since the user has selected audio.
+               var ding = document.getElementById('ding');
+               if (ding && ding.canPlayType && ding.canPlayType('audio/ogg; codecs="opus"') === 'probably') {
+                       ding.src = 'ding.opus';
+                       ding.load();
+               }
+       } else {
+               $("#soundon").html("<a href=\"javascript:set_sound(true)\">On</a>");
+               $("#soundoff").html("<strong>Off</strong>");
+       }
+       if (supports_html5_storage()) {
+               localStorage['enable_sound'] = enable_sound ? 1 : 0;
+       }
+}
+window['set_sound'] = set_sound;
+
 var init = function() {
        unique = get_unique();
 
+       // Load settings from HTML5 local storage if available.
+       if (supports_html5_storage() && localStorage['enable_sound']) {
+               set_sound(parseInt(localStorage['enable_sound']));
+       } else {
+               set_sound(false);
+       }
+       if (supports_html5_storage() && localStorage['sort_refutation_lines_by_score']) {
+               sort_refutation_lines_by_score = parseInt(localStorage['sort_refutation_lines_by_score']);
+       } else {
+               sort_refutation_lines_by_score = true;
+       }
+
        // Create board.
        board = new window.ChessBoard('board', 'start');