feat: add --browser=qt to use an embedded browser instead of system one

This also restore the --browser feature that was previously broken.

jdaviz/cli.py

@@ -62,7 +62,6 @@ def main(filepaths=None, layout='default', instrument=None, browser='default',
     # easily accessed e.g. in the file load dialog.
     os.environ['JDAVIZ_START_DIR'] = os.path.abspath('.')
 
-    from solara.__main__ import cli
     from jdaviz import solara
     solara.config = layout.capitalize()
     solara.data_list = file_list
@@ -76,11 +75,37 @@ def main(filepaths=None, layout='default', instrument=None, browser='default',
         args += ['--auto-restart']
     else:
         args += ['--production']
-    cli(['run', 'jdaviz.solara',
-         '--theme-loader', 'plain',
-         '--theme-variant', theme,
-         '--host', host,
-         '--port', port] + args)
+    run_solara(host=host, port=port, theme=theme, browser=browser)
+
+
+def run_solara(host, port, theme, browser):
+    os.environ["SOLARA_APP"] = "jdaviz.solara"
+    import solara.server.starlette
+    import solara.server.settings
+    solara.server.settings.theme.variant = theme
+    solara.server.settings.theme.loader = "plain"
+
+    server = solara.server.starlette.ServerStarlette(host="localhost", port=port)
+    print(f"Starting server on {server.base_url}")
+    server.serve_threaded()
+    server.wait_until_serving()
+    if browser == "qt":
+        from qtpy.QtWidgets import QApplication
+        from qtpy.QtWebEngineWidgets import QWebEngineView
+        from qtpy import QtCore
+
+        app = QApplication([""])
+        web = QWebEngineView()
+        web.resize(1000, 1000)
+        web.setUrl(QtCore.QUrl(server.base_url))
+        web.show()
+
+        app.exec_()
+    else:
+        import webbrowser
+        controller = webbrowser.get(None if browser == 'default' else browser)
+        controller.open(server.base_url)
+        server.join()
 
 
 def _main(config=None):
@@ -100,7 +125,7 @@ def _main(config=None):
     parser.add_argument('--instrument', type=str, default='nirspec',
                         help='Manually specifies which instrument parser to use, for Mosviz')
     parser.add_argument('--browser', type=str, default='default',
-                        help='Browser to use for application.')
+                        help='Browser to use for application (use qt for embedded qt browser).')
     parser.add_argument('--theme', choices=['light', 'dark'], default='light',
                         help='Theme to use for application.')
     parser.add_argument('--verbosity', choices=_verbosity_levels, default='info',

pyproject.toml

@@ -82,6 +82,10 @@ docs = [
 roman = [
     "roman_datamodels>=0.17.1",
 ]
+qt = [
+    "qtpy",
+    "PySide6"
+]
 
 [build-system]
 requires = [