diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,2 +1,8 @@
# HistoryCleaner
Firefox addon that deletes history older than a specified amount of days.
+
+This addon is inspired by and is a WebExtension port of [Expire History By Days](https://addons.mozilla.org/en-US/firefox/addon/expire-history-by-days/).
+
+Set the number of days to keep history items in the options page. Setting it to 0 will disable history deletion. The deletion will occur when the browser goes idle (after about 1 minute of inactivity).
+
+The icon is from [Material Design Icons](https://materialdesignicons.com/)
diff --git a/background.js b/background.js
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+++ b/background.js
@@ -0,0 +1,15 @@
+browser.idle.onStateChanged.addListener(function(state) {
+ if (state == 'idle') {
+ browser.storage.local.get('days', function(res) {
+ if (res.days != 0) {
+ var end = new Date();
+ end.setHours(0);
+ end.setMinutes(0);
+ end.setSeconds(0);
+ end.setMilliseconds(0);
+ end.setDate(end.getDate() - res.days);
+ browser.history.deleteRange({startTime: 0, endTime: end.getTime()});
+ }
+ });
+ }
+});
diff --git a/icons/icon-48.png b/icons/icon-48.png
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diff --git a/icons/icon-96.png b/icons/icon-96.png
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diff --git a/manifest.json b/manifest.json
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+++ b/manifest.json
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+{
+ "manifest_version": 2,
+ "name": "History Cleaner",
+ "version": "1",
+ "description": "Deletes history older than a specified amount of days.",
+ "icons": {
+ "48": "icons/icon-48.png",
+ "96": "icons/icon-96.png"
+ },
+ "background": {
+ "scripts": ["background.js"]
+ },
+ "permissions": [
+ "history",
+ "storage",
+ "idle"
+ ],
+ "options_ui": {
+ "page": "options.html"
+ }
+}
diff --git a/options.html b/options.html
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--- /dev/null
+++ b/options.html
@@ -0,0 +1,13 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/options.js b/options.js
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--- /dev/null
+++ b/options.js
@@ -0,0 +1,16 @@
+function saveOptions(e) {
+ browser.storage.local.set({
+ days: document.querySelector("#days").value
+ });
+ e.preventDefault();
+}
+
+function restoreOptions() {
+ var gettingItem = browser.storage.local.get('days');
+ gettingItem.then((res) => {
+ document.querySelector("#days").value = res.days || '0';
+ });
+}
+
+document.addEventListener('DOMContentLoaded', restoreOptions);
+document.querySelector("form").addEventListener("submit", saveOptions);