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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 PopupElement {
constructor(node) {
super({
node,
visibleClassName: 'modal-container-open',
openingClassName: 'modal-container-opening',
closingClassName: 'modal-container-closing',
closingAnimationDuration: 375 // Milliseconds; includes buffer
});
}
}
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