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Remove and unload the popup frame if an unexpected load occurs (#490)

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* Remove and unload the popup frame if an unexpected load occurs

* Remove unused fields

* Only update _injectPromiseComplete if the promise is the most recent one

* Remove redundant this._injectPromise !== null check
This commit is contained in:
toasted-nutbread 2020-05-02 12:59:13 -04:00 committed by GitHub
parent 8a368aaddc
commit efa7a5ecc3
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 31 additions and 3 deletions
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34
ext/fg/js/popup.js
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@ -31,6 +31,7 @@ class Popup {
this._child = null;
this._childrenSupported = true;
this._injectPromise = null;
this._injectPromiseComplete = false;
this._visible = false;
this._visibleOverride = null;
this._options = null;
@ -47,6 +48,7 @@ class Popup {
this._container.addEventListener('scroll', (e) => e.stopPropagation());
this._container.style.width = '0px';
this._container.style.height = '0px';
this._container.addEventListener('load', this._onFrameLoad.bind(this));
this._fullscreenEventListeners = new EventListenerCollection();
@ -199,10 +201,19 @@ class Popup {
// Private functions
_inject() {
if (this._injectPromise === null) {
this._injectPromise = this._createInjectPromise();
let injectPromise = this._injectPromise;
if (injectPromise === null) {
injectPromise = this._createInjectPromise();
this._injectPromise = injectPromise;
injectPromise.then(
() => {
if (injectPromise !== this._injectPromise) { return; }
this._injectPromiseComplete = true;
},
() => { this._resetFrame(); }
);
}
return this._injectPromise;
return injectPromise;
}
async _createInjectPromise() {
@ -243,6 +254,23 @@ class Popup {
return popupPreparedPromise;
}
_onFrameLoad() {
if (!this._injectPromiseComplete) { return; }
this._resetFrame();
}
_resetFrame() {
const parent = this._container.parentNode;
if (parent !== null) {
parent.removeChild(this._container);
}
this._container.removeAttribute('src');
this._container.removeAttribute('srcdoc');
this._injectPromise = null;
this._injectPromiseComplete = false;
}
async _injectStyles() {
try {
await Popup._injectStylesheet('yomichan-popup-outer-stylesheet', 'file', '/fg/css/client.css', true);