From 2a973109d47ab41dd8158a82b818e48d216dd647 Mon Sep 17 00:00:00 2001
From: CharlesChen0823 <yongchen0823@gmail.com>
Date: Mon, 26 May 2025 21:40:19 +0800
Subject: [PATCH] pane: Add functional clone on drop with `control` modifier
 (#29921)

Release Notes:

- Added a way to split and clone tab on with alt (macOS) / ctrl-mouse
drop
---
 crates/workspace/src/pane.rs | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/crates/workspace/src/pane.rs b/crates/workspace/src/pane.rs
index b4e293a5d7462665196c374380b838a12ab69c61..ad3eff848a058cc52b31ea35ebc4fb784a87de18 100644
--- a/crates/workspace/src/pane.rs
+++ b/crates/workspace/src/pane.rs
@@ -2833,6 +2833,9 @@ impl Pane {
             }
         }
 
+        let is_clone = cfg!(target_os = "macos") && window.modifiers().alt
+            || cfg!(not(target_os = "macos")) && window.modifiers().control;
+
         let from_pane = dragged_tab.pane.clone();
         self.workspace
             .update(cx, |_, cx| {
@@ -2840,9 +2843,26 @@ impl Pane {
                     if let Some(split_direction) = split_direction {
                         to_pane = workspace.split_pane(to_pane, split_direction, window, cx);
                     }
+                    let database_id = workspace.database_id();
                     let old_ix = from_pane.read(cx).index_for_item_id(item_id);
                     let old_len = to_pane.read(cx).items.len();
-                    move_item(&from_pane, &to_pane, item_id, ix, window, cx);
+                    if is_clone {
+                        let Some(item) = from_pane
+                            .read(cx)
+                            .items()
+                            .find(|item| item.item_id() == item_id)
+                            .map(|item| item.clone())
+                        else {
+                            return;
+                        };
+                        if let Some(item) = item.clone_on_split(database_id, window, cx) {
+                            to_pane.update(cx, |pane, cx| {
+                                pane.add_item(item, true, true, None, window, cx);
+                            })
+                        }
+                    } else {
+                        move_item(&from_pane, &to_pane, item_id, ix, window, cx);
+                    }
                     if to_pane == from_pane {
                         if let Some(old_index) = old_ix {
                             to_pane.update(cx, |this, _| {