get button to work

src/browser/renderer/Renderer.ts

@@ -14,6 +14,8 @@ import { ICharSizeService, ICoreBrowserService } from 'browser/services/Services
 import { IBufferService, IOptionsService, ICoreService, IInstantiationService } from 'common/services/Services';
 import { removeTerminalFromCache } from 'browser/renderer/atlas/CharAtlasCache';
 import { EventEmitter, IEvent } from 'common/EventEmitter';
+import { DecorationRenderLayer } from 'browser/renderer/DecorationRenderLayer';
+import { IBufferDecorationOptions, IGutterDecorationOptions, IDecoration } from 'xterm';
 
 let nextRendererId = 1;
 
@@ -44,7 +46,8 @@ export class Renderer extends Disposable implements IRenderer {
       instantiationService.createInstance(TextRenderLayer, this._screenElement, 0, this._colors, allowTransparency, this._id),
       instantiationService.createInstance(SelectionRenderLayer, this._screenElement, 1, this._colors, this._id),
       instantiationService.createInstance(LinkRenderLayer, this._screenElement, 2, this._colors, this._id, linkifier, linkifier2),
-      instantiationService.createInstance(CursorRenderLayer, this._screenElement, 3, this._colors, this._id, this._onRequestRedraw)
+      instantiationService.createInstance(CursorRenderLayer, this._screenElement, 3, this._colors, this._id, this._onRequestRedraw),
+      instantiationService.createInstance(DecorationRenderLayer, this._screenElement, 4, this._colors, this._id, this._onRequestRedraw)
     ];
     this.dimensions = {
       scaledCharWidth: 0,
@@ -65,6 +68,14 @@ export class Renderer extends Disposable implements IRenderer {
     this.onOptionsChanged();
   }
 
+  public registerDecoration(decorationOptions: IBufferDecorationOptions | IGutterDecorationOptions): IDecoration {
+    const decorationLayer = this._renderLayers.find(l => l instanceof DecorationRenderLayer);
+    if (decorationLayer instanceof DecorationRenderLayer) {
+      return decorationLayer.registerDecoration(decorationOptions);
+    }
+    throw new Error('no decoration layer');
+  }
+
   public dispose(): void {
     for (const l of this._renderLayers) {
       l.dispose();