Add hook/event system

1 files changed, 18 insertions, 0 deletions

diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index 6473c2d1..93b83da4 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -36,6 +36,7 @@ use helix_core::{
 };
 
 use crate::editor::Config;
+use crate::events::{DocumentDidChange, SelectionDidChange};
 use crate::{DocumentId, Editor, Theme, View, ViewId};
 
 /// 8kB of buffer space for encoding and decoding `Rope`s.
@@ -1096,6 +1097,10 @@ impl Document {
         // TODO: use a transaction?
         self.selections
             .insert(view_id, selection.ensure_invariants(self.text().slice(..)));
+        helix_event::dispatch(SelectionDidChange {
+            doc: self,
+            view: view_id,
+        })
     }
 
     /// Find the origin selection of the text in a document, i.e. where
@@ -1149,6 +1154,14 @@ impl Document {
         let success = transaction.changes().apply(&mut self.text);
 
         if success {
+            if emit_lsp_notification {
+                helix_event::dispatch(DocumentDidChange {
+                    doc: self,
+                    view: view_id,
+                    old_text: &old_doc,
+                });
+            }
+
             for selection in self.selections.values_mut() {
                 *selection = selection
                     .clone()
@@ -1164,6 +1177,10 @@ impl Document {
                     view_id,
                     selection.clone().ensure_invariants(self.text.slice(..)),
                 );
+                helix_event::dispatch(SelectionDidChange {
+                    doc: self,
+                    view: view_id,
+                });
             }
 
             self.modified_since_accessed = true;
@@ -1276,6 +1293,7 @@ impl Document {
             }
 
             if emit_lsp_notification {
+                // TODO: move to hook
                 // emit lsp notification
                 for language_server in self.language_servers() {
                     let notify = language_server.text_document_did_change(