replace voila with solara for CLI/standalone app

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -93,7 +93,7 @@ body:
         import ipygoldenlayout; print("ipygoldenlayout", ipygoldenlayout.__version__)
         import ipypopout; print("ipypopout", ipypopout.__version__)
         import jinja2; print("Jinja2", jinja2.__version__)
-        import voila; print("voila", voila.__version__)
+        import solara; print("solara", solara.__version__)
         import vispy; print("vispy", vispy.__version__)
         import sidecar; print("sidecar", sidecar.__version__)
         import jdaviz; print("Jdaviz", jdaviz.__version__)

.github/workflows/standalone.yml

@@ -51,10 +51,10 @@ jobs:
     - name: Install pytest
       run: pip install pytest-playwright
 
-    - name: Wait for Voila to get online
+    - name: Wait for Solara to get online
       uses: ifaxity/wait-on-action@a7d13170ec542bdca4ef8ac4b15e9c6aa00a6866  # v1.2.1
       with:
-        resource: tcp:8866
+        resource: tcp:8765
         timeout: 60000
 
     - name: Test standalone
@@ -174,10 +174,10 @@ jobs:
     - name: Install pytest
       run: pip install pytest-playwright
 
-    - name: Wait for Voila to get online
+    - name: Wait for Solara to get online
       uses: ifaxity/wait-on-action@a7d13170ec542bdca4ef8ac4b15e9c6aa00a6866  # v1.2.1
       with:
-        resource: tcp:8866
+        resource: tcp:8765
         timeout: 60000
 
     - name: Test standalone

CHANGES.rst

@@ -18,6 +18,8 @@ New Features
 
 - Plugins can now expose in-UI API hints. [#3137]
 
+- The standalone version of jdaviz now uses solara instead of voila, resulting in faster load times. [#2909]
+
 Cubeviz
 ^^^^^^^
 

conftest.py

@@ -29,7 +29,7 @@ def pytest_configure(config):
     PYTEST_HEADER_MODULES['ipysplitpanes'] = 'ipysplitpanes'
     PYTEST_HEADER_MODULES['ipygoldenlayout'] = 'ipygoldenlayout'
     PYTEST_HEADER_MODULES['ipypopout'] = 'ipypopout'
-    PYTEST_HEADER_MODULES['voila'] = 'voila'
+    PYTEST_HEADER_MODULES['solara'] = 'solara'
     PYTEST_HEADER_MODULES['vispy'] = 'vispy'
     PYTEST_HEADER_MODULES['gwcs'] = 'gwcs'
     PYTEST_HEADER_MODULES['asdf'] = 'asdf'

docs/dev/infrastructure.rst

@@ -49,7 +49,7 @@ The target interfaces are:
 * **Desktop**: This interface is meant to behave like a more traditional "desktop app",
   i.e., a window with a fixed set of functionality and a particular layout for a
   specific set of scientific use cases. This interface is accessed via a
-  `Voilà <https://voila.readthedocs.io>`_ wrapper that loads the same machinery as the
+  `Solara <https://solara.dev>`_ wrapper that loads the same machinery as the
   other interfaces but presents the outputs of notebook "cells" as the only view.
   This trades the flexibility of the notebook interface for a consistent and
   reproducible layout and simpler interface without the distraction of the notebook

docs/dev/win_dev.rst

@@ -11,13 +11,13 @@ under the source checkout's root directory, you will need to rebuild
 the package even in editable install mode. Otherwise, this should not
 affect your development experience.
 
-WSL2 and voila
---------------
+WSL2 and Solara
+---------------
 
-``voila`` is unable to display when WSL2 cannot start up the
+``solara`` is unable to display when WSL2 cannot start up the
 Windows-side browser executable. Unfortunately, unlike Jupyter
-notebook, ``voila`` does not have a ``--no-browser`` option
+notebook, ``solara`` does not have a ``--no-browser`` option
 with a tokenized URL you can copy-and-paste manually on the
-Windows side (see https://github.com/voila-dashboards/voila/issues/773).
+Windows side.
 Therefore, you might need to install Jdaviz natively on Windows
 to test its standalone application functionality.

docs/installation.rst

@@ -71,7 +71,6 @@ instead of ``pip``:
     conda install bottleneck
     conda install -c conda-forge notebook
     conda install -c conda-forge jupyterlab
-    conda install -c conda-forge voila
 
 You might also want to enable the ``ipywidgets`` notebook extension, as follows:
 

jdaviz/cli.py

@@ -3,11 +3,6 @@
 import inspect
 import os
 import pathlib
-import sys
-import tempfile
-
-from voila.app import Voila
-from voila.configuration import VoilaConfiguration
 
 from jdaviz import __version__
 from jdaviz.app import _verbosity_levels, ALL_JDAVIZ_CONFIGS
@@ -38,21 +33,14 @@
     browser : str, optional
         Path to browser executable.
     theme : {'light', 'dark'}
-        Theme to use for Voila app or Jupyter Lab.
+        Theme to use for application.
     verbosity : {'debug', 'info', 'warning', 'error'}
         Verbosity of the popup messages in the application.
     history_verbosity : {'debug', 'info', 'warning', 'error'}
         Verbosity of the history logger in the application.
     hotreload : bool
         Whether to enable hot-reloading of the UI (for development)
     """
-    import logging  # Local import to avoid possibly messing with JWST pipeline logger.
-
-    # Tornado Webserver py3.8 compatibility hotfix for windows
-    if sys.platform == 'win32':
-        import asyncio
-        asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
-
     if filepaths:
         # Convert paths to posix string; windows paths are not JSON compliant
         file_list = [pathlib.Path(f).absolute().as_posix() for f in filepaths]
@@ -63,74 +51,28 @@
     else:
         file_list = []
 
-    if layout == '':
-        if len(file_list) <= 1:
-            notebook = "jdaviz_cli_launcher.ipynb"
-        else:
-            raise ValueError("'layout' argument is required when specifying multiple files")
-    else:
-        notebook = "jdaviz_cli.ipynb"
-
-    with open(JDAVIZ_DIR / notebook) as f:
-        notebook_template = f.read()
-
-    start_dir = os.path.abspath('.')
+    if layout == '' and len(file_list) > 1:
+        raise ValueError("'layout' argument is required when specifying multiple files")
 
     # Keep track of start directory in environment variable so that it can be
     # easily accessed e.g. in the file load dialog.
-    os.environ['JDAVIZ_START_DIR'] = start_dir
-
-    nbdir = tempfile.mkdtemp()
-
+    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
+    if layout == 'mosviz':
+        solara.load_data_kwargs = {'instrument': instrument}
+    solara.theme = theme
+    solara.jdaviz_verbosity = verbosity
+    solara.jdaviz_history_verbosity = history_verbosity
+    args = []
     if hotreload:
-        notebook_template = notebook_template.replace("# PREFIX", "from jdaviz import enable_hot_reloading; enable_hot_reloading()")  # noqa: E501
-
-    with open(os.path.join(nbdir, 'notebook.ipynb'), 'w') as nbf:
-        nbf.write(
-            notebook_template
-            .replace('CONFIG', layout.capitalize())
-            .replace('DATA_LIST', str(file_list))
-            .replace('JDAVIZ_VERBOSITY', verbosity)
-            .replace('JDAVIZ_HISTORY_VERBOSITY', history_verbosity)
-            # Mosviz specific changes
-            .replace('load_data(data', 'load_data(directory=data' if layout == 'mosviz' else 'load_data(data')  # noqa: E501
-            .replace(') #ADDITIONAL_LOAD_DATA_ARGS', f', instrument=\'{instrument}\')' if layout == 'mosviz' else ')')  # noqa: E501
-            .strip()
-        )
-
-    os.chdir(nbdir)
-
-    try:
-        logging.getLogger('tornado.access').disabled = True
-        Voila.notebook_path = 'notebook.ipynb'
-        VoilaConfiguration.template = 'jdaviz-default'
-        VoilaConfiguration.enable_nbextensions = True
-        VoilaConfiguration.file_whitelist = ['.*']
-        VoilaConfiguration.theme = theme
-        if browser != 'default':
-            Voila.browser = browser
-
-        voila = Voila.instance()
-        # monkey patch listen, so we can get a handle on the kernel_manager
-        # after it is created
-        previous_listen = voila.listen
-
-        def listen(*args, **kwargs):
-            # monkey patch remove_kernel, so we can stop the event loop
-            # when a kernel is removed (which means the browser page was closed)
-            previous_remove_kernel = voila.kernel_manager.remove_kernel
-
-            def remove_kernel(kernel_id):
-                previous_remove_kernel(kernel_id)
-                voila.ioloop.stop()
-
-            voila.kernel_manager.remove_kernel = remove_kernel
-            return previous_listen(*args, **kwargs)
-
-        voila.listen = listen
-        sys.exit(voila.launch_instance(argv=[]))
-    finally:
-        os.chdir(start_dir)
+        args += ['--auto-restart']
+    else:
+        args += ['--production']
+    cli(['run', 'jdaviz.solara'] + args)
 
 
 def _main(config=None):
@@ -157,13 +99,9 @@
                         help='Verbosity of the application for popup snackbars.')
     parser.add_argument('--history-verbosity', choices=_verbosity_levels, default='info',
                         help='Verbosity of the logger history.')
-    if sys.version_info >= (3, 9):
-        # Also enables --no-hotreload
-        parser.add_argument('--hotreload', action=argparse.BooleanOptionalAction, default=False,
-                            help='Whether to enable hot-reloading of the UI (for development).')
-    else:
-        parser.add_argument('--hotreload', action='store_true', default=False,
-                            help='Enable hot-reloading of the UI (for development).')
+    # Also enables --no-hotreload
+    parser.add_argument('--hotreload', action=argparse.BooleanOptionalAction, default=False,
+                        help='Whether to enable hot-reloading of the UI (for development).')
     parser.add_argument('--version', action='version', version=f'%(prog)s {__version__}')
     args = parser.parse_args()
 

jdaviz/conftest.py

@@ -402,7 +402,7 @@ def pytest_configure(config):
     PYTEST_HEADER_MODULES['ipysplitpanes'] = 'ipysplitpanes'
     PYTEST_HEADER_MODULES['ipygoldenlayout'] = 'ipygoldenlayout'
     PYTEST_HEADER_MODULES['ipypopout'] = 'ipypopout'
-    PYTEST_HEADER_MODULES['voila'] = 'voila'
+    PYTEST_HEADER_MODULES['solara'] = 'solara'
     PYTEST_HEADER_MODULES['vispy'] = 'vispy'
     PYTEST_HEADER_MODULES['gwcs'] = 'gwcs'
     PYTEST_HEADER_MODULES['asdf'] = 'asdf'

jdaviz/core/launcher.py

@@ -128,9 +128,16 @@
     mosviz_icon = Unicode(read_icon(os.path.join(ICON_DIR, 'mosviz_icon.svg'), 'svg+xml')).tag(sync=True)  # noqa
     imviz_icon = Unicode(read_icon(os.path.join(ICON_DIR, 'imviz_icon.svg'), 'svg+xml')).tag(sync=True)  # noqa
 
-    def __init__(self, main, configs=ALL_JDAVIZ_CONFIGS, filepath='', height=None, *args, **kwargs):
+    def __init__(self, main=None, configs=ALL_JDAVIZ_CONFIGS, filepath='',
+                 height=None, *args, **kwargs):
         self.vdocs = 'latest' if 'dev' in __version__ else 'v'+__version__
 
+        if main is None:
+            main = v.Sheet(class_="mx-25",
+                           attributes={"id": "popout-widget-container"},
+                           color="#00212C",
+                           height=height)
+
         self.main = main
         self.configs = configs
         self.height = f"{height}px" if isinstance(height, int) else height
@@ -193,14 +200,19 @@
         config = event.get('config')
         helper = _launch_config_with_data(config, self.loaded_data,
                                           filepath=self.filepath, show=False)
-        if self.height != '100%':
+        if self.height not in ['100%', '100vh']:
             # We're in jupyter mode. Set to default height
             default_height = helper.app.state.settings['context']['notebook']['max_height']
             helper.app.layout.height = default_height
             self.main.height = default_height
         self.main.color = 'transparent'
         self.main.children = [helper.app]
 
+    @property
+    def main_with_launcher(self):
+        self.main.children = [self]
+        return self.main
+
 
 def show_launcher(configs=ALL_JDAVIZ_CONFIGS, filepath='', height='450px'):
     '''Display an interactive Jdaviz launcher to select your data and compatible configuration
@@ -217,11 +229,5 @@
     '''
     # Color defined manually due to the custom theme not being defined yet (in main_styles.vue)
     height = f"{height}px" if isinstance(height, int) else height
-    main = v.Sheet(class_="mx-25",
-                   attributes={"id": "popout-widget-container"},
-                   color="#00212C",
-                   height=height,
-                   _metadata={'mount_id': 'content'})
-    main.children = [Launcher(main, configs, filepath, height)]
-
-    show_widget(main, loc='inline', title=None)
+    launcher = Launcher(None, configs, filepath, height)
+    show_widget(launcher.main_with_launcher, loc='inline', title=None)