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-rw-r--r--ext/bg/js/settings/popup-elements.js114
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diff --git a/ext/bg/js/settings/popup-elements.js b/ext/bg/js/settings/popup-elements.js
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+/*
+ * Copyright (C) 2020 Yomichan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+class PopupElement extends EventDispatcher {
+ constructor({node, visibleClassName, openingClassName, closingClassName, closingAnimationDuration}) {
+ super();
+ this._node = node;
+ this._visibleClassName = visibleClassName;
+ this._openingClassName = openingClassName;
+ this._closingClassName = closingClassName;
+ this._closingAnimationDuration = closingAnimationDuration;
+ this._mutationObserver = null;
+ this._visible = false;
+ this._closeTimer = null;
+ }
+
+ get node() {
+ return this._node;
+ }
+
+ isVisible() {
+ return this._node.classList.contains(this._visibleClassName);
+ }
+
+ setVisible(value, animate=true) {
+ value = !!value;
+ const {classList} = this._node;
+ if (classList.contains(this._visibleClassName) === value) { return; }
+
+ if (this._closeTimer !== null) {
+ clearTimeout(this._closeTimer);
+ this._closeTimer = null;
+ }
+
+ if (value) {
+ if (animate) { classList.add(this._openingClassName); }
+ classList.remove(this._closingClassName);
+ getComputedStyle(this._node).getPropertyValue('display'); // Force update of CSS display property, allowing animation
+ classList.add(this._visibleClassName);
+ if (animate) { classList.remove(this._openingClassName); }
+ this._node.focus();
+ } else {
+ if (animate) { classList.add(this._closingClassName); }
+ classList.remove(this._visibleClassName);
+ if (animate) {
+ this._closeTimer = setTimeout(() => {
+ this._closeTimer = null;
+ classList.remove(this._closingClassName);
+ }, this._closingAnimationDuration);
+ }
+ }
+ }
+
+ on(eventName, callback) {
+ if (eventName === 'visibilityChanged') {
+ if (this._mutationObserver === null) {
+ this._visible = this._node.classList.contains(this._visibleClassName);
+ this._mutationObserver = new MutationObserver(this._onMutation.bind(this));
+ this._mutationObserver.observe(this._node, {
+ attributes: true,
+ attributeFilter: ['class'],
+ attributeOldValue: true
+ });
+ }
+ }
+ return super.on(eventName, callback);
+ }
+
+ off(eventName, callback) {
+ const result = super.off(eventName, callback);
+ if (eventName === 'visibilityChanged' && !this.hasListeners(eventName)) {
+ if (this._mutationObserver !== null) {
+ this._mutationObserver.disconnect();
+ this._mutationObserver = null;
+ }
+ }
+ return result;
+ }
+
+ // Private
+
+ _onMutation() {
+ const visible = this._node.classList.contains(this._visibleClassName);
+ if (this._visible === visible) { return; }
+ this._visible = visible;
+ this.trigger('visibilityChanged', {visible});
+ }
+}
+
+class Modal extends EventDispatcher {
+ constructor(node) {
+ super({
+ node,
+ visibleClassName: 'modal-container-open',
+ openingClassName: 'modal-container-opening',
+ closingClassName: 'modal-container-closing',
+ closingAnimationDuration: 375 // Milliseconds; includes buffer
+ });
+ }
+}