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Java Lab2: add prompter to theater#73492
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Pull request overview
Adds Lab2 Java Lab support for the Theater “photo prompter” workflow by overlaying a focused photo-picker button on the preview area and relaying Theater input messages back to Javabuilder via Codebridge context.
Changes:
- Wire a new
sendTypedInputMessagecallback from Java Lab2 runtime utilities throughJavalab2View→Codebridge→CodebridgeContext. - Update
TheaterPreviewto open/close a photo prompter UI and forward selected files to the Theater mini-app. - Introduce
PhotoPrompterButton(+ styles) and a unit test for focus/label/upload behavior.
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Copilot reviewed 11 out of 11 changed files in this pull request and generated 3 comments.
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sanchitmalhotra126
approved these changes
Jun 25, 2026
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useHiddenFileInput could be useful here (may need to add some more params)
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This PR adds prompter support to the theater in Java Lab on lab2. In legacy, we replace the entire console with the prompter input. That seems non-ideal accessibility wise, and in lab2 Java Lab the theater preview is right next to the console as opposed to off to the side. I opted instead to have a button appear over the preview area (which will have no preview yet since the image must be uploaded before the gif is generated), and to have focus go to the prompter button when it appears. The button text will be the text the user provided.
Legacy behavior
Screen.Recording.2026-06-25.at.11.19.43.AM.mov
Lab2 behavior
This screen recording has the chrome setting on to view the currently highlighted element, so you can see focus going to the button.
Screen.Recording.2026-06-25.at.11.21.27.AM.mov
Testing story
Tested locally and added unit tests.