1 files changed, 34 insertions, 0 deletions
diff --git a/browsers/firefox/extension/background.js b/browsers/firefox/extension/background.js
new file mode 100644
index 0000000..df0ee80
--- /dev/null
+++ b/browsers/firefox/extension/background.js
@@ -0,0 +1,34 @@
+let port = browser.runtime.connectNative("accent_color");
+let current = null;
+
+function broadcast(color) {
+  browser.tabs.query({}).then(tabs => {
+    for (let tab of tabs) {
+      browser.tabs.sendMessage(tab.id, {color}).catch(() => {});
+    }
+  });
+  browser.theme.update({colors: {toolbar: color}});
+}
+
+port.onMessage.addListener(msg => {
+  if (msg.color && msg.color !== current) {
+    current = msg.color;
+    broadcast(current);
+  }
+});
+
+function poll() {
+  try {
+    port.postMessage({query: "color"});
+  } catch (e) {
+    // ignore
+  }
+}
+setInterval(poll, 1000);
+poll();
+
+browser.runtime.onMessage.addListener((msg, sender) => {
+  if (msg.request === "color") {
+    return Promise.resolve({color: current});
+  }
+});