refactor completion and signature help using hooks

1 files changed, 33 insertions, 4 deletions

diff --git a/helix-view/src/handlers.rs b/helix-view/src/handlers.rs
index ae3eb545..724e7b19 100644
--- a/helix-view/src/handlers.rs
+++ b/helix-view/src/handlers.rs
@@ -1,12 +1,41 @@
-use std::sync::Arc;
-
 use helix_event::send_blocking;
 use tokio::sync::mpsc::Sender;
 
 use crate::handlers::lsp::SignatureHelpInvoked;
-use crate::Editor;
+use crate::{DocumentId, Editor, ViewId};
 
 pub mod dap;
 pub mod lsp;
 
-pub struct Handlers {}
+pub struct Handlers {
+    // only public because most of the actual implementation is in helix-term right now :/
+    pub completions: Sender<lsp::CompletionEvent>,
+    pub signature_hints: Sender<lsp::SignatureHelpEvent>,
+}
+
+impl Handlers {
+    /// Manually trigger completion (c-x)
+    pub fn trigger_completions(&self, trigger_pos: usize, doc: DocumentId, view: ViewId) {
+        send_blocking(
+            &self.completions,
+            lsp::CompletionEvent::ManualTrigger {
+                cursor: trigger_pos,
+                doc,
+                view,
+            },
+        );
+    }
+
+    pub fn trigger_signature_help(&self, invocation: SignatureHelpInvoked, editor: &Editor) {
+        let event = match invocation {
+            SignatureHelpInvoked::Automatic => {
+                if !editor.config().lsp.auto_signature_help {
+                    return;
+                }
+                lsp::SignatureHelpEvent::Trigger
+            }
+            SignatureHelpInvoked::Manual => lsp::SignatureHelpEvent::Invoked,
+        };
+        send_blocking(&self.signature_hints, event)
+    }
+}