From 91808a088b32f9847ea7a2dfe21439f4f14da09a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oliver=20G=C3=BCnther?= <mail@oliverguenther.de>
Date: Mon, 9 Sep 2019 09:18:27 +0200
Subject: [PATCH] Bind the feed callback function to the editor instance

---
 src/mentionui.js   |  2 +-
 tests/mentionui.js | 31 +++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/mentionui.js b/src/mentionui.js
index ad8ae7c..796ad66 100644
--- a/src/mentionui.js
+++ b/src/mentionui.js
@@ -135,7 +135,7 @@ export default class MentionUI extends Plugin {
 			}
 
 			const minimumCharacters = mentionDescription.minimumCharacters || 0;
-			const feedCallback = typeof feed == 'function' ? feed : createFeedCallback( feed );
+			const feedCallback = typeof feed == 'function' ? feed.bind( this.editor ) : createFeedCallback( feed );
 			const watcher = this._setupTextWatcherForFeed( marker, minimumCharacters );
 			const itemRenderer = mentionDescription.itemRenderer;
 
diff --git a/tests/mentionui.js b/tests/mentionui.js
index 3ca330b..2bcce9b 100644
--- a/tests/mentionui.js
+++ b/tests/mentionui.js
@@ -852,6 +852,37 @@ describe( 'MentionUI', () => {
 			} );
 		} );
 
+		describe( 'callback function using data from editor', () => {
+			beforeEach( () => {
+				return createClassicTestEditor( {
+					feeds: [
+						{
+							marker: '#',
+							feed() {
+								expect( this ).to.equal( editor );
+								return Promise.resolve( [ 'foo', 'bar' ] );
+							}
+						}
+					]
+				} );
+			} );
+
+			it( 'should bind the instance panel for matched marker', () => {
+				setData( model, '<paragraph>foo []</paragraph>' );
+
+				model.change( writer => {
+					writer.insertText( '#', doc.selection.getFirstPosition() );
+				} );
+
+				return waitForDebounce()
+					.then( () => {
+						expect( panelView.isVisible ).to.be.true;
+						expect( editor.model.markers.has( 'mention' ) ).to.be.true;
+						expect( mentionsView.items ).to.have.length( 2 );
+					} );
+			} );
+		} );
+
 		describe( 'asynchronous list with custom trigger', () => {
 			beforeEach( () => {
 				const issuesNumbers = [ '#100', '#101', '#102', '#103' ];