X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=www%2Fjs%2Fremoteglot.js;h=f88e1e0dabaa6fbbdbe0bae0fee9ea6c39fddd85;hp=e7a0453fd90569488cb10a761a6ac7830e8967ab;hb=80b7eedfd414c122038def7ec9e229766219be92;hpb=c17cb0c030ad2b4eb8493fbbc6aba34b68afacb6;ds=sidebyside

diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js
index e7a0453..f88e1e0 100644
--- 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
@@ -407,21 +429,18 @@ 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,
 		// the UI should be to expand the history.
 		pv = '(<a class="move" href="javascript:collapse_history(false)">…</a>) ';
 		i = pretty_pv.length - opt_limit;
-		if (i < 0) {
-			i = 0;
-		}
 		if (i % 2 == 1) {
 			++i;
 		}
 		move_num += i / 2;
-	} else if (toplay == 'B') {
+	} else if (toplay == 'B' && pretty_pv.length > 0) {
 		var move = "<a class=\"move\" id=\"automove" + line_num + "-0\" href=\"javascript:show_line(" + line_num + ", " + 0 + ");\">" + pretty_pv[0] + "</a>";
 		pv = move_num + '. … ' + move;
 		toplay = 'W';
@@ -582,9 +601,16 @@ var update_board = function(data, num_viewers) {
 	if (data['score'] !== null) {
 		$("#score").text(data['score']);
 	}
+	if (data['short_score'] !== undefined && data['short_score'] !== null) {
+		document.title = '(' + data['short_score'] + ') analysis.sesse.net';
+	} else {
+		document.title = 'analysis.sesse.net';
+	}
 
 	// The search stats.
-	if (data['nodes'] && data['nps'] && data['depth']) {
+	if (data['tablebase'] == 1) {
+		$("#searchstats").text("Tablebase result");
+	} else if (data['nodes'] && data['nps'] && data['depth']) {
 		var stats = thousands(data['nodes']) + ' nodes, ' + thousands(data['nps']) + ' nodes/sec, depth ' + data['depth'] + ' ply';
 		if (data['seldepth']) {
 			stats += ' (' + data['seldepth'] + ' selective)';
@@ -598,6 +624,8 @@ var update_board = function(data, num_viewers) {
 		}
 
 		$("#searchstats").text(stats);
+	} else {
+		$("#searchstats").text("");
 	}
 
 	// Update the board itself.
@@ -812,6 +840,8 @@ 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');