From 858b1c5f543f528eef5891f4377c4b78ee582180 Mon Sep 17 00:00:00 2001
From: 7015725 <user@example.com>
Date: Fri, 22 May 2026 05:29:30 +0800
Subject: [PATCH] fix: debounce panel back callback registration

---
 code/th_09_animation.js | 13 ++++++++++++-
 manifest.json           |  6 +++---
 manifest.sig            |  2 +-
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/code/th_09_animation.js b/code/th_09_animation.js
index 4686e2d..a648d9e 100644
--- a/code/th_09_animation.js
+++ b/code/th_09_animation.js
@@ -415,6 +415,17 @@ FloatBallAppWM.prototype.registerPanelPredictiveBack = function(panel, which) {
   try {
     if (!panel) return false;
     if (android.os.Build.VERSION.SDK_INT < 33) return false;
+    // attach listener + post fallback may fire almost together; avoid unregister/register churn and duplicate logs.
+    try {
+      var nowReg = Date.now();
+      var entries0 = this.state.panelBackCallbackEntries || [];
+      for (var ei0 = 0; ei0 < entries0.length; ei0++) {
+        var it0 = entries0[ei0];
+        if (it0 && it0.view === panel && String(it0.which || "") === String(which || "") && (nowReg - Number(it0.registeredAt || 0)) < 300) {
+          return true;
+        }
+      }
+    } catch(eRegDebounce) {}
     this.unregisterPanelPredictiveBack(panel);
     var dispatcher = null;
     try { dispatcher = panel.findOnBackInvokedDispatcher(); } catch (eFind) { dispatcher = null; }
@@ -483,7 +494,7 @@ FloatBallAppWM.prototype.registerPanelPredictiveBack = function(panel, which) {
     } catch (ePri) { priority = 0; }
     dispatcher.registerOnBackInvokedCallback(priority, cb);
     if (!this.state.panelBackCallbackEntries) this.state.panelBackCallbackEntries = [];
-    this.state.panelBackCallbackEntries.push({ view: panel, dispatcher: dispatcher, callback: cb, which: String(which || ""), animation: usedAnimation, mode: mode });
+    this.state.panelBackCallbackEntries.push({ view: panel, dispatcher: dispatcher, callback: cb, which: String(which || ""), animation: usedAnimation, mode: mode, registeredAt: Date.now() });
     safeLog(this.L, 'i', "back callback registered which=" + String(which || "") + " mode=" + mode + " priority=" + String(priority));
     return true;
   } catch (e) {
diff --git a/manifest.json b/manifest.json
index abb887b..7fa1de2 100644
--- a/manifest.json
+++ b/manifest.json
@@ -34,8 +34,8 @@
       "size": 7938
     },
     "th_09_animation.js": {
-      "sha256": "56c53d9b8ba4bb9547dd4c939555a10ab1911220ac7b2188db87ec6f4203c326",
-      "size": 40197
+      "sha256": "79e81066da481c8d3a306483a313771fc1058031244f445edb2a618f23dfdbc3",
+      "size": 40746
     },
     "th_10_shell.js": {
       "sha256": "0ed793079c2f6ba7d29f4c0d411705cb72419f45f572cbe37ed32ac16527a8bc",
@@ -68,5 +68,5 @@
   },
   "keyId": "toolhub-targets-2026-rsa3072",
   "schema": 2,
-  "version": 20260521212532
+  "version": 20260521212917
 }
diff --git a/manifest.sig b/manifest.sig
index ac87a34..50f7ec1 100644
--- a/manifest.sig
+++ b/manifest.sig
@@ -1 +1 @@
-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