feat(plugin-api): allow replacing pane with existing pane (#4246)

* work

* make the api work

* some cleanups

* close pane

* style(fmt): rustfmt

1 files changed, 36 insertions, 9 deletions

diff --git a/zellij-utils/src/plugin_api/plugin_command.rs b/zellij-utils/src/plugin_api/plugin_command.rs
index 7fb583b7..296a8a74 100644
--- a/zellij-utils/src/plugin_api/plugin_command.rs
+++ b/zellij-utils/src/plugin_api/plugin_command.rs
@@ -26,15 +26,15 @@ pub use super::generated_api::api::{
         PaneIdAndFloatingPaneCoordinates, PaneType as ProtobufPaneType,
         PluginCommand as ProtobufPluginCommand, PluginMessagePayload, RebindKeysPayload,
         ReconfigurePayload, ReloadPluginPayload, RenameWebLoginTokenPayload,
-        RenameWebTokenResponse, RequestPluginPermissionPayload, RerunCommandPanePayload,
-        ResizePaneIdWithDirectionPayload, ResizePayload, RevokeAllWebTokensResponse,
-        RevokeTokenResponse, RevokeWebLoginTokenPayload, RunCommandPayload,
-        ScrollDownInPaneIdPayload, ScrollToBottomInPaneIdPayload, ScrollToTopInPaneIdPayload,
-        ScrollUpInPaneIdPayload, SetFloatingPanePinnedPayload, SetSelfMouseSelectionSupportPayload,
-        SetTimeoutPayload, ShowPaneWithIdPayload, StackPanesPayload, SubscribePayload,
-        SwitchSessionPayload, SwitchTabToPayload, TogglePaneEmbedOrEjectForPaneIdPayload,
-        TogglePaneIdFullscreenPayload, UnsubscribePayload, WebRequestPayload,
-        WriteCharsToPaneIdPayload, WriteToPaneIdPayload,
+        RenameWebTokenResponse, ReplacePaneWithExistingPanePayload, RequestPluginPermissionPayload,
+        RerunCommandPanePayload, ResizePaneIdWithDirectionPayload, ResizePayload,
+        RevokeAllWebTokensResponse, RevokeTokenResponse, RevokeWebLoginTokenPayload,
+        RunCommandPayload, ScrollDownInPaneIdPayload, ScrollToBottomInPaneIdPayload,
+        ScrollToTopInPaneIdPayload, ScrollUpInPaneIdPayload, SetFloatingPanePinnedPayload,
+        SetSelfMouseSelectionSupportPayload, SetTimeoutPayload, ShowPaneWithIdPayload,
+        StackPanesPayload, SubscribePayload, SwitchSessionPayload, SwitchTabToPayload,
+        TogglePaneEmbedOrEjectForPaneIdPayload, TogglePaneIdFullscreenPayload, UnsubscribePayload,
+        WebRequestPayload, WriteCharsToPaneIdPayload, WriteToPaneIdPayload,
     },
     plugin_permission::PermissionType as ProtobufPermissionType,
     resize::ResizeAction as ProtobufResizeAction,
@@ -1711,6 +1711,22 @@ impl TryFrom<ProtobufPluginCommand> for PluginCommand {
                 Some(_) => Err("ClearKeyPressesIntercepts should have no payload, found a payload"),
                 None => Ok(PluginCommand::ClearKeyPressesIntercepts),
             },
+            Some(CommandName::ReplacePaneWithExistingPane) => match protobuf_plugin_command.payload
+            {
+                Some(Payload::ReplacePaneWithExistingPanePayload(
+                    replace_pane_with_other_pane_payload,
+                )) => Ok(PluginCommand::ReplacePaneWithExistingPane(
+                    replace_pane_with_other_pane_payload
+                        .pane_id_to_replace
+                        .and_then(|p_id| PaneId::try_from(p_id).ok())
+                        .ok_or("Failed to parse ReplacePaneWithExistingPanePayload")?,
+                    replace_pane_with_other_pane_payload
+                        .existing_pane_id
+                        .and_then(|p_id| PaneId::try_from(p_id).ok())
+                        .ok_or("Failed to parse ReplacePaneWithExistingPanePayload")?,
+                )),
+                _ => Err("Mismatched payload for ReplacePaneWithExistingPane"),
+            },
             None => Err("Unrecognized plugin command"),
         }
     }
@@ -2848,6 +2864,17 @@ impl TryFrom<PluginCommand> for ProtobufPluginCommand {
                 name: CommandName::ClearKeyPressesIntercepts as i32,
                 payload: None,
             }),
+            PluginCommand::ReplacePaneWithExistingPane(pane_id_to_replace, existing_pane_id) => {
+                Ok(ProtobufPluginCommand {
+                    name: CommandName::ReplacePaneWithExistingPane as i32,
+                    payload: Some(Payload::ReplacePaneWithExistingPanePayload(
+                        ReplacePaneWithExistingPanePayload {
+                            pane_id_to_replace: ProtobufPaneId::try_from(pane_id_to_replace).ok(),
+                            existing_pane_id: ProtobufPaneId::try_from(existing_pane_id).ok(),
+                        },
+                    )),
+                })
+            },
         }
     }
 }