45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
import { bind } from "@ember/runloop";
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import { getOwner } from "discourse-common/lib/get-owner";
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export default Ember.Mixin.create({
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ready() {
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this._super(...arguments);
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this._onChangeHandler = bind(this, this._onChange);
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// Default to true
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Discourse.set("hasFocus", true);
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document.addEventListener("visibilitychange", this._onChangeHandler);
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document.addEventListener("resume", this._onChangeHandler);
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document.addEventListener("freeze", this._onChangeHandler);
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},
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reset() {
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this._super(...arguments);
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document.removeEventListener("visibilitychange", this._onChangeHandler);
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document.removeEventListener("resume", this._onChangeHandler);
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document.removeEventListener("freeze", this._onChangeHandler);
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this._onChangeHandler = null;
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},
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_onChange() {
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const container = getOwner(this);
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const appEvents = container.lookup("service:app-events");
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if (document.visibilityState === "hidden") {
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if (Discourse.hasFocus) {
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Discourse.set("hasFocus", false);
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appEvents.trigger("discourse:focus-changed", false);
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}
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} else {
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if (!Discourse.hasFocus) {
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Discourse.set("hasFocus", true);
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appEvents.trigger("discourse:focus-changed", true);
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}
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}
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}
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});
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