3 files changed, 25 insertions, 2 deletions
diff --git a/ext/bg/js/api.js b/ext/bg/js/api.js
index 999ea337..88eef431 100644
--- a/ext/bg/js/api.js
+++ b/ext/bg/js/api.js
@@ -401,3 +401,11 @@ async function apiFocusTab(tab) {
         // Edge throws exception for no reason here.
     }
 }
+
+async function apiClipboardGet() {
+    const clipboardPasteTarget = utilBackend().clipboardPasteTarget;
+    clipboardPasteTarget.innerText = '';
+    clipboardPasteTarget.focus();
+    document.execCommand('paste');
+    return clipboardPasteTarget.innerText;
+}
diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index 23d876f6..7192d026 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -30,6 +30,8 @@ class Backend {
         this.isPreparedResolve = null;
         this.isPreparedPromise = new Promise((resolve) => (this.isPreparedResolve = resolve));
 
+        this.clipboardPasteTarget = document.querySelector('#clipboard-paste-target');
+
         this.apiForwarder = new BackendApiForwarder();
     }
 
@@ -187,7 +189,8 @@ Backend.messageHandlers = {
     forward: ({action, params}, sender) => apiForward(action, params, sender),
     frameInformationGet: (params, sender) => apiFrameInformationGet(sender),
     injectStylesheet: ({css}, sender) => apiInjectStylesheet(css, sender),
-    getEnvironmentInfo: () => apiGetEnvironmentInfo()
+    getEnvironmentInfo: () => apiGetEnvironmentInfo(),
+    clipboardGet: () => apiClipboardGet()
 };
 
 window.yomichan_backend = new Backend();
diff --git a/ext/bg/js/search.js b/ext/bg/js/search.js
index a09ca822..dca4e8fa 100644
--- a/ext/bg/js/search.js
+++ b/ext/bg/js/search.js
@@ -17,6 +17,12 @@
  */
 
 
+let IS_FIREFOX = null;
+(async () => {
+    const {browser} = await apiGetEnvironmentInfo();
+    IS_FIREFOX = ['firefox', 'firefox-mobile'].includes(browser);
+})();
+
 class DisplaySearch extends Display {
     constructor() {
         super(document.querySelector('#spinner'), document.querySelector('#content'));
@@ -235,7 +241,13 @@ class DisplaySearch extends Display {
 
     startClipboardMonitor() {
         this.clipboardMonitorIntervalId = setInterval(async () => {
-            const curText = (await navigator.clipboard.readText()).trim();
+            let curText = null;
+            // TODO get rid of this and figure out why apiClipboardGet doesn't work on Firefox
+            if (IS_FIREFOX) {
+                curText = (await navigator.clipboard.readText()).trim();
+            } else if (IS_FIREFOX === false) {
+                curText = (await apiClipboardGet()).trim();
+            }
             if (curText && (curText !== this.clipboardPrevText)) {
                 if (this.isWanakanaEnabled()) {
                     this.query.value = window.wanakana.toKana(curText);