SG-40769 - Multiple RVLinkLauncher unresponsive dialogue windows can be opened when clicking away from the window

[cedrik-fuoco-adsk]

SG-40769 - Multiple RVLinkLauncher unresponsive dialogue windows can be opened when clicking away from the window

Linked issues

n/a

Summarize your change.

Fixed multiple dialog windows appearing when opening rvlink URLs. Added logic to terminate other running RVLinkLauncher instances on startup and automatically close any existing dialog when a new rvlink URL is received. This ensures only one chooser dialog is visible at a time - new rvlink URLs close the previous dialog and display a fresh one with the new URL.

Describe the reason for the change.

When users clicked multiple rvlink URLs from a browser, each click would create a new modal dialog that stacked on top of previous ones. Only the topmost dialog remained interactive, leaving users unable to interact with or close the underlying dialogs. This occurred because: (1) command-line launches created separate process instances that didn't coordinate with each other, and (2) browser-launched URLs were sent as Apple Events to an already-running instance that was blocked in a modal loop. The fix improves user experience by ensuring rvlink URLs are processed one at a time with a single, responsive dialog window.

Describe what you have tested and on which operating system.

Affects MacOS only

Add a list of changes, and note any that might need special attention during the review.

If possible, provide screenshots.

[bernie-laberge]

LGTM

[cedrik-fuoco-adsk]

Do you mind reviewing @eloisebrosseau @bernie-laberge ? I changed how I did the fix.

• Single instance: RVLinkLauncher now runs as a single-instance app, Multiple rvlink:// activations are routed to the same process instead of starting separate launchers.

• Dialog reuse: When a new rvlink:// URL is received while the chooser dialog is already open, the existing NSAlert is brought to the front and its “Opening: …” text is updated to the latest URL, instead of opening additional dialogs.

• Latest URL respected: The selected RV application always opens the most recent rvlink:// URL that was clicked.

• Terminal and browser behave the same: Invoking RVLinkLauncher rvlink://... from the terminal forwards the URL to LaunchServices (NSWorkspace openURL:), so both terminal and browser use the same single-instance launcher and chooser window.