aboutsummaryrefslogtreecommitdiff
path: root/ext/js/settings/storage-controller.js
diff options
context:
space:
mode:
Diffstat (limited to 'ext/js/settings/storage-controller.js')
-rw-r--r--ext/js/settings/storage-controller.js183
1 files changed, 0 insertions, 183 deletions
diff --git a/ext/js/settings/storage-controller.js b/ext/js/settings/storage-controller.js
deleted file mode 100644
index c27c8690..00000000
--- a/ext/js/settings/storage-controller.js
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * Copyright (C) 2019-2021 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 StorageController {
- constructor() {
- this._mostRecentStorageEstimate = null;
- this._storageEstimateFailed = false;
- this._isUpdating = false;
- this._persistentStorageCheckbox = false;
- this._storageUsageNode = null;
- this._storageQuotaNode = null;
- this._storageUseFiniteNodes = null;
- this._storageUseInfiniteNodes = null;
- this._storageUseValidNodes = null;
- this._storageUseInvalidNodes = null;
- }
-
- prepare() {
- this._persistentStorageCheckbox = document.querySelector('#storage-persistent-checkbox');
- this._storageUsageNodes = document.querySelectorAll('.storage-usage');
- this._storageQuotaNodes = document.querySelectorAll('.storage-quota');
- this._storageUseFiniteNodes = document.querySelectorAll('.storage-use-finite');
- this._storageUseInfiniteNodes = document.querySelectorAll('.storage-use-infinite');
- this._storageUseValidNodes = document.querySelectorAll('.storage-use-valid');
- this._storageUseInvalidNodes = document.querySelectorAll('.storage-use-invalid');
-
- this._preparePersistentStorage();
- this.updateStats();
- this._persistentStorageCheckbox.addEventListener('change', this._onPersistentStorageCheckboxChange.bind(this), false);
- document.querySelector('#storage-refresh').addEventListener('click', this.updateStats.bind(this), false);
- }
-
- async updateStats() {
- if (this._isUpdating) { return; }
-
- try {
- this._isUpdating = true;
-
- const estimate = await this._storageEstimate();
- const valid = (estimate !== null);
-
- // Firefox reports usage as 0 when persistent storage is enabled.
- const finite = valid && (estimate.usage > 0 || !(await this._isStoragePeristent()));
- if (finite) {
- for (const node of this._storageUsageNodes) {
- node.textContent = this._bytesToLabeledString(estimate.usage);
- }
- for (const node of this._storageQuotaNodes) {
- node.textContent = this._bytesToLabeledString(estimate.quota);
- }
- }
-
- this._setElementsVisible(this._storageUseFiniteNodes, valid && finite);
- this._setElementsVisible(this._storageUseInfiniteNodes, valid && !finite);
- this._setElementsVisible(this._storageUseValidNodes, valid);
- this._setElementsVisible(this._storageUseInvalidNodes, !valid);
-
- return valid;
- } finally {
- this._isUpdating = false;
- }
- }
-
- // Private
-
- async _preparePersistentStorage() {
- if (!(navigator.storage && navigator.storage.persist)) {
- // Not supported
- return;
- }
-
- const info = document.querySelector('#storage-persistent-info');
- if (info !== null) { info.hidden = false; }
-
- const isStoragePeristent = await this._isStoragePeristent();
- this._updateCheckbox(isStoragePeristent);
-
- const button = document.querySelector('#storage-persistent-button');
- if (button !== null) {
- button.hidden = false;
- button.addEventListener('click', this._onPersistStorageButtonClick.bind(this), false);
- }
- }
-
- _onPersistentStorageCheckboxChange(e) {
- const node = e.currentTarget;
- if (!node.checked) {
- node.checked = true;
- return;
- }
- this._attemptPersistStorage();
- }
-
- _onPersistStorageButtonClick() {
- const {checked} = this._persistentStorageCheckbox;
- if (checked) { return; }
- this._persistentStorageCheckbox.checked = !checked;
- this._persistentStorageCheckbox.dispatchEvent(new Event('change'));
- }
-
- async _attemptPersistStorage() {
- if (await this._isStoragePeristent()) { return; }
-
- let isStoragePeristent = false;
- try {
- isStoragePeristent = await navigator.storage.persist();
- } catch (e) {
- // NOP
- }
-
- this._updateCheckbox(isStoragePeristent);
-
- if (isStoragePeristent) {
- this.updateStats();
- } else {
- const node = document.querySelector('#storage-persistent-fail-warning');
- if (node !== null) { node.hidden = false; }
- }
- }
-
- async _storageEstimate() {
- if (this._storageEstimateFailed && this._mostRecentStorageEstimate === null) {
- return null;
- }
- try {
- const value = await navigator.storage.estimate();
- this._mostRecentStorageEstimate = value;
- return value;
- } catch (e) {
- this._storageEstimateFailed = true;
- }
- return null;
- }
-
- _bytesToLabeledString(size) {
- const base = 1000;
- const labels = [' bytes', 'KB', 'MB', 'GB', 'TB'];
- const maxLabelIndex = labels.length - 1;
- let labelIndex = 0;
- while (size >= base && labelIndex < maxLabelIndex) {
- size /= base;
- ++labelIndex;
- }
- const label = labelIndex === 0 ? `${size}` : size.toFixed(1);
- return `${label}${labels[labelIndex]}`;
- }
-
- async _isStoragePeristent() {
- try {
- return await navigator.storage.persisted();
- } catch (e) {
- // NOP
- }
- return false;
- }
-
- _updateCheckbox(isStoragePeristent) {
- const checkbox = this._persistentStorageCheckbox;
- checkbox.checked = isStoragePeristent;
- checkbox.readOnly = isStoragePeristent;
- }
-
- _setElementsVisible(elements, visible) {
- visible = !visible;
- for (const element of elements) {
- element.hidden = visible;
- }
- }
-}