Error on Android — attempts to run an editor command when no editor is available

[personalizedrefrigerator]

See https://discourse.joplinapp.org/t/2024-07-19-diff-view-0-1-0-error-on-android/39230.

Notes

This seems to be happening because the plugin tries to send a "showDiffWith" command to the editor on note selection change, regardless of whether the editor is open:

joplin-plugin-diff-tool/src/index.ts

Lines 67 to 69 in 6ec09e4

	await joplin.commands.execute('editor.execCommand', {
	name: 'cm6-show-diff-with',
	args: [await getContentToDiffWith(selectedNoteId)],

On mobile, when the note editor isn't visible, editor.execCommand fails.

Possible solutions:

• Detect whether the editor is open before attempting to diff with another note.
  • While it's possible to determine that the editor has opened with a .postMessage call, it's difficult to determine when the editor closes.
• Catch the error.