pane: Serialize pinned tab state (#17670)

Release Notes:

- Tab pin state is now persisted across Zed runs.

crates/workspace/src/pane.rs

@@ -715,6 +715,14 @@ impl Pane {
         }
     }
 
+    pub(crate) fn set_pinned_count(&mut self, count: usize) {
+        self.pinned_tab_count = count;
+    }
+
+    pub(crate) fn pinned_count(&self) -> usize {
+        self.pinned_tab_count
+    }
+
     pub fn handle_item_edit(&mut self, item_id: EntityId, cx: &AppContext) {
         if let Some(preview_item) = self.preview_item() {
             if preview_item.item_id() == item_id && !preview_item.preserve_preview(cx) {

crates/workspace/src/persistence.rs

@@ -13,7 +13,7 @@ use sqlez::{
 };
 
 use ui::px;
-use util::ResultExt;
+use util::{maybe, ResultExt};
 use uuid::Uuid;
 
 use crate::WorkspaceId;
@@ -352,6 +352,9 @@ define_connection! {
     sql!(
         ALTER TABLE workspaces ADD COLUMN window_id INTEGER DEFAULT NULL;
     ),
+    sql!(
+        ALTER TABLE panes ADD COLUMN pinned_count INTEGER DEFAULT 0;
+    )
     ];
 }
 
@@ -846,6 +849,7 @@ impl WorkspaceDb {
                 SerializedPaneGroup::Pane(SerializedPane {
                     active: true,
                     children: vec![],
+                    pinned_count: 0,
                 })
             }))
     }
@@ -861,15 +865,17 @@ impl WorkspaceDb {
             Option<SerializedAxis>,
             Option<PaneId>,
             Option<bool>,
+            Option<usize>,
             Option<String>,
         );
         self.select_bound::<GroupKey, GroupOrPane>(sql!(
-            SELECT group_id, axis, pane_id, active, flexes
+            SELECT group_id, axis, pane_id, active, pinned_count, flexes
                 FROM (SELECT
                         group_id,
                         axis,
                         NULL as pane_id,
                         NULL as active,
+                        NULL as pinned_count,
                         position,
                         parent_group_id,
                         workspace_id,
@@ -881,6 +887,7 @@ impl WorkspaceDb {
                         NULL,
                         center_panes.pane_id,
                         panes.active as active,
+                        pinned_count,
                         position,
                         parent_group_id,
                         panes.workspace_id as workspace_id,
@@ -891,7 +898,8 @@ impl WorkspaceDb {
                 ORDER BY position
         ))?((group_id, workspace_id))?
         .into_iter()
-        .map(|(group_id, axis, pane_id, active, flexes)| {
+        .map(|(group_id, axis, pane_id, active, pinned_count, flexes)| {
+            let maybe_pane = maybe!({ Some((pane_id?, active?, pinned_count?)) });
             if let Some((group_id, axis)) = group_id.zip(axis) {
                 let flexes = flexes
                     .map(|flexes: String| serde_json::from_str::<Vec<f32>>(&flexes))
@@ -902,10 +910,11 @@ impl WorkspaceDb {
                     children: self.get_pane_group(workspace_id, Some(group_id))?,
                     flexes,
                 })
-            } else if let Some((pane_id, active)) = pane_id.zip(active) {
+            } else if let Some((pane_id, active, pinned_count)) = maybe_pane {
                 Ok(SerializedPaneGroup::Pane(SerializedPane::new(
                     self.get_items(pane_id)?,
                     active,
+                    pinned_count,
                 )))
             } else {
                 bail!("Pane Group Child was neither a pane group or a pane");
@@ -977,10 +986,10 @@ impl WorkspaceDb {
         parent: Option<(GroupId, usize)>,
     ) -> Result<PaneId> {
         let pane_id = conn.select_row_bound::<_, i64>(sql!(
-            INSERT INTO panes(workspace_id, active)
+            INSERT INTO panes(workspace_id, active, pinned_count)
-            VALUES (?, ?)
+            VALUES (?, ?, ?)
             RETURNING pane_id
-        ))?((workspace_id, pane.active))?
+        ))?((workspace_id, pane.active, pane.pinned_count))?
         .ok_or_else(|| anyhow!("Could not retrieve inserted pane_id"))?;
 
         let (parent_id, order) = parent.unzip();
@@ -1219,6 +1228,7 @@ mod tests {
                                 SerializedItem::new("Terminal", 6, true, false),
                             ],
                             false,
+                            0,
                         )),
                         SerializedPaneGroup::Pane(SerializedPane::new(
                             vec![
@@ -1226,6 +1236,7 @@ mod tests {
                                 SerializedItem::new("Terminal", 8, false, false),
                             ],
                             false,
+                            0,
                         )),
                     ],
                 ),
@@ -1235,6 +1246,7 @@ mod tests {
                         SerializedItem::new("Terminal", 10, true, false),
                     ],
                     false,
+                    0,
                 )),
             ],
         );
@@ -1523,6 +1535,7 @@ mod tests {
                                 SerializedItem::new("Terminal", 2, true, false),
                             ],
                             false,
+                            0,
                         )),
                         SerializedPaneGroup::Pane(SerializedPane::new(
                             vec![
@@ -1530,6 +1543,7 @@ mod tests {
                                 SerializedItem::new("Terminal", 3, true, false),
                             ],
                             true,
+                            0,
                         )),
                     ],
                 ),
@@ -1539,6 +1553,7 @@ mod tests {
                         SerializedItem::new("Terminal", 6, false, false),
                     ],
                     false,
+                    0,
                 )),
             ],
         );
@@ -1570,6 +1585,7 @@ mod tests {
                                 SerializedItem::new("Terminal", 2, true, false),
                             ],
                             false,
+                            0,
                         )),
                         SerializedPaneGroup::Pane(SerializedPane::new(
                             vec![
@@ -1577,6 +1593,7 @@ mod tests {
                                 SerializedItem::new("Terminal", 3, true, false),
                             ],
                             true,
+                            0,
                         )),
                     ],
                 ),
@@ -1586,6 +1603,7 @@ mod tests {
                         SerializedItem::new("Terminal", 6, true, false),
                     ],
                     false,
+                    0,
                 )),
             ],
         );
@@ -1605,6 +1623,7 @@ mod tests {
                         SerializedItem::new("Terminal", 2, true, false),
                     ],
                     false,
+                    0,
                 )),
                 SerializedPaneGroup::Pane(SerializedPane::new(
                     vec![
@@ -1612,6 +1631,7 @@ mod tests {
                         SerializedItem::new("Terminal", 3, false, false),
                     ],
                     true,
+                    0,
                 )),
             ],
         );

crates/workspace/src/persistence/model.rs

@@ -297,6 +297,7 @@ impl Default for SerializedPaneGroup {
         Self::Pane(SerializedPane {
             children: vec![SerializedItem::default()],
             active: false,
+            pinned_count: 0,
         })
     }
 }
@@ -379,11 +380,16 @@ impl SerializedPaneGroup {
 pub struct SerializedPane {
     pub(crate) active: bool,
     pub(crate) children: Vec<SerializedItem>,
+    pub(crate) pinned_count: usize,
 }
 
 impl SerializedPane {
-    pub fn new(children: Vec<SerializedItem>, active: bool) -> Self {
+    pub fn new(children: Vec<SerializedItem>, active: bool, pinned_count: usize) -> Self {
-        SerializedPane { children, active }
+        SerializedPane {
+            children,
+            active,
+            pinned_count,
+        }
     }
 
     pub async fn deserialize_to(
@@ -442,6 +448,9 @@ impl SerializedPane {
                 }
             })?;
         }
+        pane.update(cx, |pane, _| {
+            pane.set_pinned_count(self.pinned_count);
+        })?;
 
         anyhow::Ok(items)
     }

crates/workspace/src/workspace.rs

@@ -4025,7 +4025,7 @@ impl Workspace {
         };
 
         fn serialize_pane_handle(pane_handle: &View<Pane>, cx: &WindowContext) -> SerializedPane {
-            let (items, active) = {
+            let (items, active, pinned_count) = {
                 let pane = pane_handle.read(cx);
                 let active_item_id = pane.active_item().map(|item| item.item_id());
                 (
@@ -4042,10 +4042,11 @@ impl Workspace {
                         })
                         .collect::<Vec<_>>(),
                     pane.has_focus(cx),
+                    pane.pinned_count(),
                 )
             };
 
-            SerializedPane::new(items, active)
+            SerializedPane::new(items, active, pinned_count)
         }
 
         fn build_serialized_pane_group(