+ this.focus = (document.visibilityState == "visible");
+ this.send(this.focus ? "getfocus" : "losefocus");
+ },
+ onFocus: function() {
+ this.focus = true;
+ this.send("getfocus");
+ },
+ onBlur: function() {
+ this.focus = false;
+ this.send("losefocus");
+ },
+ invColor: function(c) {
+ if (c == 'w') return this.st.tr["Black"];
+ return this.st.tr["White"];
+ },
+ partialResetNewchallenge: function() {
+ // Reset potential target and custom FEN:
+ this.newchallenge.to = "";
+ this.newchallenge.color = '';
+ this.newchallenge.fen = "";
+ this.newchallenge.diag = "";
+ this.newchallenge.memorize = false;
+ },
+ showNewchallengeForm: function() {
+ this.partialResetNewchallenge();
+ window.doClick("modalNewgame");
+ },
+ sameOptions: function(opt1, opt2) {
+ const keys1 = Object.keys(opt1),
+ keys2 = Object.keys(opt2);
+ if (keys1.length != keys2.length) return false;
+ for (const key1 of keys1) {
+ if (!keys2.includes(key1)) return false;
+ if (opt1[key1] != opt2[key1]) return false;
+ }
+ return true;
+ },
+ addPresetChall: function(chall) {
+ // Add only if not already existing:
+ if (this.presetChalls.some(c =>
+ c.vid == chall.vid &&
+ c.cadence == chall.cadence &&
+ this.sameOptions(c.options, chall.options)
+ )) {
+ return;
+ }
+ const L = this.presetChalls.length;
+ this.presetChalls.push({
+ index: L,
+ vid: chall.vid,
+ vname: chall.vname, //redundant, but easier
+ cadence: chall.cadence,
+ options: chall.options
+ });
+ localStorage.setItem("presetChalls", JSON.stringify(this.presetChalls));
+ },
+ removePresetChall: function(e, pchall) {
+ e.stopPropagation();
+ const pchallIdx =
+ this.presetChalls.findIndex(pc => pc.index == pchall.index);
+ this.presetChalls.splice(pchallIdx, 1);
+ localStorage.setItem("presetChalls", JSON.stringify(this.presetChalls));
+ },
+ tchallButtonsMargin: function() {
+ if (!!this.curChallToAccept.fen) return { "margin-top": "10px" };
+ return {};
+ },
+ changeChallTarget: function() {
+ if (!this.newchallenge.to) {
+ // Reset potential FEN + diagram
+ this.newchallenge.fen = "";
+ this.newchallenge.color = '';
+ this.newchallenge.diag = "";
+ }