Angular Frontend

[Clashsoft]

This is being worked on in the angular branch.

[Clashsoft]

Current differences to the vanilla implementation:

• [x] form elements turn white when focused. Seems to be a specificity issue between [data-theme=dark] .form-control vs .form-control:focus.
• [x] the "Compile and Run" button has no tooltip.
• [x] using the keyboard shortcuts in the scenario editor to submit does not show the Loading... labels. This was because the keyboard event handlers ran submit outside of the Angular zone so change detection did not work.
• [x] there is no space between "Load Example:" and the dropdown
• [x] sometimes all object diagram tabs are deselected. This was because of https://github.com/ng-bootstrap/ng-bootstrap/issues/3569. Now the tabs use 1-based indexing.

Differences that are acceptable:

• Download Gradle project does not save the configuration (but DOES use the configuration values from the inputs). This is intentional because it doesn't close the modal; we want the user to click "Save".
• Closing and then reopening the configuration modal without saving retains the unsaved changes. This is considered a bug in the vanilla implementation.