From a34fc6846916a132bccf31a6e96383c452facfb2 Mon Sep 17 00:00:00 2001
From: Thomas Brouard <contact@brrd.fr>
Date: Tue, 10 Mar 2020 22:38:20 +0100
Subject: [PATCH] Add a way to abort closing (#53)

---
 README.md |  2 +-
 index.js  | 10 ++++++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 4f386e1..375e181 100644
--- a/README.md
+++ b/README.md
@@ -227,7 +227,7 @@ The following events are available:
 * `tab.on("flash", (tab) => { ... });`
 * `tab.on("unflash", (tab) => { ... });`
 * `tab.on("close", (tab) => { ... });`
-* `tab.on("closing", (tab) => { ... });`
+* `tab.on("closing", (tab, abort) => { ... });` (Use `abort()` function to cancel closing)
 
 ## Drag and drop support
 
diff --git a/index.js b/index.js
index 4b3b7b0..261f73b 100644
--- a/index.js
+++ b/index.js
@@ -342,14 +342,20 @@ class Tab extends EventEmitter {
   }
 
   close (force) {
-    this.emit("closing", this);
-    if (this.isClosed || (!this.closable && !force)) return;
+    const abortController = new AbortController();
+    const abort = () => abortController.abort();
+    this.emit("closing", this, abort);
+
+    const abortSignal = abortController.signal;
+    if (this.isClosed || (!this.closable && !force) || abortSignal.aborted) return;
+
     this.isClosed = true;
     let tabGroup = this.tabGroup;
     tabGroup.tabContainer.removeChild(this.tab);
     tabGroup.viewContainer.removeChild(this.webview);
     let activeTab = this.tabGroup.getActiveTab();
     TabGroupPrivate.removeTab.bind(tabGroup)(this, true);
+
     this.emit("close", this);
 
     if (activeTab.id === this.id) {