Handle window/showMessage and display it bellow status line (#5535)

* Handle window/showMessage and display it bellow status line

* Enable `editor.lsp.display_messages` by default

---------

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

helix-term/src/application.rs

@@ -846,7 +846,15 @@ impl Application {
                         }
                     }
                     Notification::ShowMessage(params) => {
-                        log::warn!("unhandled window/showMessage: {:?}", params);
+                        if self.config.load().editor.lsp.display_messages {
+                            match params.typ {
+                                lsp::MessageType::ERROR => self.editor.set_error(params.message),
+                                lsp::MessageType::WARNING => {
+                                    self.editor.set_warning(params.message)
+                                }
+                                _ => self.editor.set_status(params.message),
+                            }
+                        }
                     }
                     Notification::LogMessage(params) => {
                         log::info!("window/logMessage: {:?}", params);
@@ -930,7 +938,7 @@ impl Application {
                             self.lsp_progress.update(server_id, token, work);
                         }
 
-                        if self.config.load().editor.lsp.display_messages {
+                        if self.config.load().editor.lsp.display_progress_messages {
                             self.editor.set_status(status);
                         }
                     }

helix-view/src/editor.rs

@@ -421,7 +421,9 @@ pub fn get_terminal_provider() -> Option<TerminalConfig> {
 pub struct LspConfig {
     /// Enables LSP
     pub enable: bool,
-    /// Display LSP progress messages below statusline
+    /// Display LSP messagess from $/progress below statusline
+    pub display_progress_messages: bool,
+    /// Display LSP messages from window/showMessage below statusline
     pub display_messages: bool,
     /// Enable automatic pop up of signature help (parameter hints)
     pub auto_signature_help: bool,
@@ -439,7 +441,8 @@ impl Default for LspConfig {
     fn default() -> Self {
         Self {
             enable: true,
-            display_messages: false,
+            display_progress_messages: false,
+            display_messages: true,
             auto_signature_help: true,
             display_signature_help_docs: true,
             display_inlay_hints: false,
@@ -1271,6 +1274,13 @@ impl Editor {
         self.status_msg = Some((error, Severity::Error));
     }
 
+    #[inline]
+    pub fn set_warning<T: Into<Cow<'static, str>>>(&mut self, warning: T) {
+        let warning = warning.into();
+        log::warn!("editor warning: {}", warning);
+        self.status_msg = Some((warning, Severity::Warning));
+    }
+
     #[inline]
     pub fn get_status(&self) -> Option<(&Cow<'static, str>, &Severity)> {
         self.status_msg.as_ref().map(|(status, sev)| (status, sev))