From f309affff2d7482188a67cd3c56cabdcb69fe543 Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Wed, 31 Aug 2022 05:44:48 -0700
Subject: [PATCH] Tweak handling of _contextRestorationTimeout

---
 addons/xterm-addon-webgl/src/WebglRenderer.ts | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/addons/xterm-addon-webgl/src/WebglRenderer.ts b/addons/xterm-addon-webgl/src/WebglRenderer.ts
index 23c763a2..6dcd3061 100644
--- a/addons/xterm-addon-webgl/src/WebglRenderer.ts
+++ b/addons/xterm-addon-webgl/src/WebglRenderer.ts
@@ -53,6 +53,7 @@ export class WebglRenderer extends Disposable implements IRenderer {
 
   private _core: ITerminal;
   private _isAttached: boolean;
+  private _contextRestorationTimeout: number | undefined;
 
   private _onChangeTextureAtlas = new EventEmitter<HTMLCanvasElement>();
   public get onChangeTextureAtlas(): IEvent<HTMLCanvasElement> { return this._onChangeTextureAtlas.event; }
@@ -62,8 +63,6 @@ export class WebglRenderer extends Disposable implements IRenderer {
   private _onContextLoss = new EventEmitter<void>();
   public get onContextLoss(): IEvent<void> { return this._onContextLoss.event; }
 
-  private _contextRestorationTimeout: number | undefined;
-
   constructor(
     private _terminal: Terminal,
     private _colors: IColorSet,
@@ -117,16 +116,15 @@ export class WebglRenderer extends Disposable implements IRenderer {
       // Wait a few seconds to see if the 'webglcontextrestored' event is fired.
       // If not, dispatch the onContextLoss notification to observers.
       this._contextRestorationTimeout = setTimeout(() => {
-        if (this._contextRestorationTimeout !== 0) {
-          console.log('webgl context not restored; firing onContextLoss');
-          this._onContextLoss.fire(e);
-        }
+        this._contextRestorationTimeout = undefined;
+        console.warn('webgl context not restored; firing onContextLoss');
+        this._onContextLoss.fire(e);
       }, 3000 /* ms */);
     }));
     this.register(addDisposableDomListener(this._canvas, 'webglcontextrestored', (e) => {
-      console.log('webglcontextrestored event received');
+      console.warn('webglcontextrestored event received');
       clearTimeout(this._contextRestorationTimeout);
-      this._contextRestorationTimeout = 0;
+      this._contextRestorationTimeout = undefined;
       // The texture atlas and glyph renderer must be fully reinitialized
       // because their contents have been lost.
       removeTerminalFromCache(this._terminal);