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-rw-r--r--ext/bg/css/settings.css11
-rw-r--r--ext/bg/js/settings.js32
-rw-r--r--ext/bg/settings.html13
3 files changed, 52 insertions, 4 deletions
diff --git a/ext/bg/css/settings.css b/ext/bg/css/settings.css
index 6284058a..100478aa 100644
--- a/ext/bg/css/settings.css
+++ b/ext/bg/css/settings.css
@@ -137,6 +137,17 @@
white-space: pre;
}
+.btn-inner-middle {
+ vertical-align: middle;
+}
+.storage-persist-button-inner {
+ pointer-events: none;
+}
+input[type=checkbox]#storage-persist-button-checkbox {
+ margin: 0 0.375em 0 0;
+ padding: 0;
+}
+
[data-show-for-browser] {
display: none;
}
diff --git a/ext/bg/js/settings.js b/ext/bg/js/settings.js
index 84b54ba9..7ad628ba 100644
--- a/ext/bg/js/settings.js
+++ b/ext/bg/js/settings.js
@@ -724,14 +724,13 @@ async function storageEstimate() {
storageEstimate.mostRecent = null;
async function storageInfoInitialize() {
+ storagePersistInitialize();
const browser = await getBrowser();
const container = document.querySelector('#storage-info');
container.setAttribute('data-browser', browser);
await storageShowInfo();
- container.classList.remove('storage-hidden');
-
document.querySelector('#storage-refresh').addEventListener('click', () => storageShowInfo(), false);
}
@@ -770,6 +769,35 @@ function storageSpinnerShow(show) {
}
}
+async function storagePersistInitialize() {
+ if (!(navigator.storage && navigator.storage.persist)) {
+ // Not supported
+ return;
+ }
+
+ const info = document.querySelector('#storage-persist-info');
+ const button = document.querySelector('#storage-persist-button');
+ const checkbox = document.querySelector('#storage-persist-button-checkbox');
+
+ info.classList.remove('storage-hidden');
+ button.classList.remove('storage-hidden');
+
+ let persisted = await navigator.storage.persisted();
+ if (persisted) {
+ checkbox.checked = true;
+ }
+
+ button.addEventListener('click', async () => {
+ if (persisted) {
+ return;
+ }
+ if (await navigator.storage.persist()) {
+ persisted = true;
+ checkbox.checked = true;
+ }
+ }, false);
+}
+
/*
* Information
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index e4710283..19dee8b3 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -395,12 +395,20 @@
</div>
</div>
- <div id="storage-info" class="storage-hidden">
+ <div id="storage-info">
<div>
<img src="/mixed/img/spinner.gif" class="pull-right" id="storage-spinner" />
<h3>Storage</h3>
</div>
+ <div id="storage-persist-info" class="storage-hidden">
+ <p class="help-block">
+ Web browsers may sometimes clear stored data if the device is running low on storage space.
+ This can result in the stored dictionary data being deleted unexpectedly, causing Yomichan to stop working for no apparent reason.
+ In order to prevent this, persistent storage must be enable by clicking the "Persistent Storage" button below.
+ </p>
+ </div>
+
<div id="storage-use" class="storage-hidden">
<p class="help-block">
Yomichan is using approximately <strong id="storage-usage"></strong> of <strong id="storage-quota"></strong>.
@@ -425,7 +433,8 @@
</div></div>
<div>
- <button class="btn btn-default" id="storage-refresh">Refresh</button>
+ <button class="btn btn-default" id="storage-refresh"><span class="btn-inner-middle">Refresh</span></button>
+ <button class="btn btn-default storage-hidden ignore-form-changes" id="storage-persist-button"><span class="storage-persist-button-inner"><input type="checkbox" class="btn-inner-middle" id="storage-persist-button-checkbox" readonly /><span class="btn-inner-middle">Persistent Storage</span></span></button>
</div>
</div>