feat(linear-progress): add getBuffer

PiperOrigin-RevId: 359129606
material-components · Feb 23, 2021 · 9c85d50 · 9c85d50
1 parent 8ecd7c9
commit 9c85d50
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diff --git a/packages/mdc-linear-progress/README.md b/packages/mdc-linear-progress/README.md
@@ -130,6 +130,7 @@ MDC Linear Progress Foundation exposes the following methods:
 | `setProgress(value: number) => void` | Sets the progress bar to this value. Value should be between [0, 1]. |
 | `getProgress() => number` | The current progress value in the interval [0,1]. |
 | `setBuffer(value: number) => void` | Sets the buffer bar to this value. Value should be between [0, 1]. |
+| `getBuffer() => number` | The current buffer value in the interval [0,1]. |
 | `open() => void` | Puts the component in the open state. |
 | `close() => void` | Puts the component in the closed state. |
 | `isClosed() => boolean` | Whether or not the progress indicator is closed. |

diff --git a/packages/mdc-linear-progress/foundation.ts b/packages/mdc-linear-progress/foundation.ts
@@ -138,6 +138,10 @@ export class MDCLinearProgressFoundation extends
     }
   }
 
+  getBuffer() {
+    return this.buffer;
+  }
+
   open() {
     this.adapter.removeClass(cssClasses.CLOSED_CLASS);
     this.adapter.removeClass(cssClasses.CLOSED_ANIMATION_OFF_CLASS);

diff --git a/packages/mdc-linear-progress/test/foundation.test.ts b/packages/mdc-linear-progress/test/foundation.test.ts
@@ -266,6 +266,7 @@ describe('MDCLinearProgressFoundation', () => {
         .toHaveBeenCalledWith('transform', 'scaleX(0.5)');
     expect(mockAdapter.setAttribute)
         .toHaveBeenCalledWith(strings.ARIA_VALUENOW, '0.5');
+    expect(foundation.getProgress()).toEqual(0.5);
   });
 
   it('#setProgress on indeterminate does nothing', () => {
@@ -286,6 +287,7 @@ describe('MDCLinearProgressFoundation', () => {
     foundation.setBuffer(0.5);
     expect(mockAdapter.setBufferBarStyle)
         .toHaveBeenCalledWith('flex-basis', '50%');
+    expect(foundation.getBuffer()).toEqual(0.5);
   });
 
   it('#setBuffer on indeterminate does nothing', () => {