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Diffstat (limited to 'ext/bg/js/settings/storage-controller.js')
| -rw-r--r-- | ext/bg/js/settings/storage-controller.js | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/ext/bg/js/settings/storage-controller.js b/ext/bg/js/settings/storage-controller.js deleted file mode 100644 index c27c8690..00000000 --- a/ext/bg/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; - } - } -} |