Panel

Deprecation and API Warnings

- `PasswordInput` and `TextAreaInput` no longer inherit directly from `TextInput` ([6593](https://github.com/holoviz/panel/pull/6593))

Date: 2024-05-21

This patch release is likely the last in the 1.4.x series. The most important fixes in this release are fixes to ensure keyboard shortcuts do not get triggered inside Panel components for for recent versions of JupyterLab, fixes for OAuth token refreshes, and various documentation fixes. The release also includes a small number of enhancements, including improved UX for the `FileSelector`. Many thanks to the many contributors to this release including jrycw, Coderambling, cdeil, and the maintainers Hoxbro, MarcSkovMadsen, ahuang11, maximlt and philippjfr.

Enhancements

- Add CSS on mouse interaction with `Card` ([6636](https://github.com/holoviz/panel/pull/6636))
- Make `ChatMessage.reaction_icons` reactive ([6807](https://github.com/holoviz/panel/pull/6807))
- Allow external library to define additional socket handler ([6820](https://github.com/holoviz/panel/pull/6820))
- Allow navigating `FileSelector` with double click ([6843](https://github.com/holoviz/panel/pull/6843))

Bug fixes

- Ensure reference is resolved when passing options to `from_param` ([6762](https://github.com/holoviz/panel/pull/6762))
- Ensure token refresh is always scheduled ([6802](https://github.com/holoviz/panel/pull/6802))
- Fix small memory leak when caching `Design` modifiers ([4978](https://github.com/holoviz/panel/pull/4978))
- Ensure refreshed tokens can be accessed across processes ([6817](https://github.com/holoviz/panel/pull/6817))
- Ensure binary buffers are correctly extracted in notebook `CommManager` ([6818](https://github.com/holoviz/panel/pull/6818))
- Make `Tabulator` resize handling more robust ([6821](https://github.com/holoviz/panel/pull/6821))
- Fix links in `panel convert` index ([6828](https://github.com/holoviz/panel/pull/6828))
- Suppress keyboard shortcuts in notebook output ([6825](https://github.com/holoviz/panel/pull/6825))
- Ensure we don't error out when `FastDesignProvider` is undefined ([6832](https://github.com/holoviz/panel/pull/6832))
- Ensure model changes are applied while session is starting ([6835](https://github.com/holoviz/panel/pull/6835))

Documentation

- Refactor the `hvplot.interactive` tutorial utilizing `pn.rx` ([6700](https://github.com/holoviz/panel/pull/6700))
- Update styling after upgrade to latest pydata-sphinx-theme ([6823](https://github.com/holoviz/panel/pull/6823))
- Fix bug in Reset Jupyterlite script ([6834](https://github.com/holoviz/panel/pull/6834))
- Fix gallery deployment URL ([6831](https://github.com/holoviz/panel/pull/6831))
- Add redirects for old documentation pages ([6833](https://github.com/holoviz/panel/pull/6833))
- Remove Google Analytics ([6836](https://github.com/holoviz/panel/pull/6836))
- Various documentation fixes ([6829](https://github.com/holoviz/panel/pull/6829))

Date: 2024-04-23

This micro-release fixes a number of smaller regressions and bugs including parsing of notebooks. Many thanks to our new contributor bkreider, our returning contributors, jrycw and ea42gh, and our dedicated team of maintainers including ahuang11, MarcSkovMadsen and philippjfr.

Enhancements

- Allow toggling CTRL+Enter vs Enter to send `ChatAreaInput` ([6592](https://github.com/holoviz/panel/pull/6592))
- Allow adding JS callbacks in `ChatInterface.button_properties` ([6706](https://github.com/holoviz/panel/pull/6706))

Bug fixes

- Fix regression in parsing notebooks served as apps ([6736](https://github.com/holoviz/panel/pull/6736))
- Do not include placeholder in `ChatInterface.serialize` and properly replace placeholder for streams ([6734](https://github.com/holoviz/panel/pull/6734))
- Remove `Perspective.toggle_config` which was erroneously reintroduced in 1.4.1 ([6721](https://github.com/holoviz/panel/pull/6721))
- Fix dynamically setting `ChatMessage` `footer_objects`/`header_objects` ([6705](https://github.com/holoviz/panel/pull/6705))
- Allow `Location.sync` of DataFrame parameters ([6745](https://github.com/holoviz/panel/pull/6745))
- Fix and improve Plotly event handling ([6753](https://github.com/holoviz/panel/pull/6753))
- Fix issue when converting templated apps to Pyodide/PyScript ([6756](https://github.com/holoviz/panel/pull/6756))
- Fix styling of loading indicator in Fast design ([6761](https://github.com/holoviz/panel/pull/6761))
- Ensure `VTK` nan, above and below colors are serialized ([6763](https://github.com/holoviz/panel/pull/6763))
- Fix issues with `Perspective` theme and persist config when switching plugins ([6764](https://github.com/holoviz/panel/pull/6764))
- Do not restore unmodified parameters in `config.set` triggering undesirable side-effects ([6772 ([6771](https://github.com/holoviz/panel/pull/6772))
- Make autoreload module cleanup more robust ([6771](https://github.com/holoviz/panel/pull/6771))
- Ensure that cache `.clear()` clears the correct function ([6771](https://github.com/holoviz/panel/pull/6781))

Documentation

- Various fixes and cleanup of documentation ([6704](https://github.com/holoviz/panel/pull/6704), [#6707](https://github.com/holoviz/panel/pull/6707), [#6710](https://github.com/holoviz/panel/pull/6710), [#6755](https://github.com/holoviz/panel/pull/6755),)
- Document how display full html document in iframe ([6740](https://github.com/holoviz/panel/pull/6740))
- Improve Plotly reference documentation ([6751](https://github.com/holoviz/panel/pull/6751), [#6760](https://github.com/holoviz/panel/pull/6760))

Date: 2024-04-05

This micro-release fixes a number of regressions and other bugs introduced in recent releases and further improves the dashboard builder UI. Additionally it includes some tweaks and polish for the new tutorial material. Many thanks to our new contributor jrycw, our returning contributors cdeil and TheoMathurin and our maintainers ahuang11, MarcSkovMadsen, Hoxbro and philippjfr for their contributions to this release.

Enhancements

- Allow rendering raw `IPython.display` output in dashboard builder ([6657](https://github.com/holoviz/panel/pull/6657))
- Improve snapping behavior and add undo functionality in dashboard builder UI ([6687](https://github.com/holoviz/panel/pull/6687)))

Bug Fixes

- Fix layout persistence issues in dashboard builder ([6602](https://github.com/holoviz/panel/pull/6602))
- Ensure `Perspective` loads in notebooks and docs ([6626](https://github.com/holoviz/panel/pull/6626))
- Allow full reset of dashboard builder layout ([6625](https://github.com/holoviz/panel/pull/6625))
- Fix issues with `VTK` colormap serialization ([6651](https://github.com/holoviz/panel/pull/6651))
- Allow `Tabulator` `HTMLTemplateFormatter` to reference multiple columns ([6663](https://github.com/holoviz/panel/pull/6663))
- Fix loading spinner in converted app without template ([6665](https://github.com/holoviz/panel/pull/6665))
- Avoid unnecessary rescroll on Column ([6666](https://github.com/holoviz/panel/pull/6666))
- Fix dynamically updating description tooltips ([6676](https://github.com/holoviz/panel/pull/6676))
- Ensure Perspective is fully loaded before attempting render ([6689](https://github.com/holoviz/panel/pull/6689)))
- Ensure busy indicators are always reset ([6698](https://github.com/holoviz/panel/pull/6698))

Styling

- Only apply styling to Bootstrap buttons ([6610](https://github.com/holoviz/panel/pull/6610))
- Change into a slicker `Card` button icon ([6638](https://github.com/holoviz/panel/pull/6638))
- Fix card header margins ([6639](https://github.com/holoviz/panel/pull/6639))
- Ensure `Perspective` renders correctly in all browsers ([6664](https://github.com/holoviz/panel/pull/6664))

Documentation

- Improve layout builder docs ([6601](https://github.com/holoviz/panel/pull/6601))
- Various Tutorial fixes ([6614](https://github.com/holoviz/panel/pull/6614), [#6669](https://github.com/holoviz/panel/pull/6669), [#6670](https://github.com/holoviz/panel/pull/6670), [#6679](https://github.com/holoviz/panel/pull/6679))
- Ensure all docs pages are indexed ([6615](https://github.com/holoviz/panel/pull/6615))
- Document `Flexbox.gap` parameter ([6616](https://github.com/holoviz/panel/pull/6616))
- Improve custom template documentation ([6618](https://github.com/holoviz/panel/pull/6618))
- Improve Layout Builder Docs ([6619](https://github.com/holoviz/panel/pull/6619))
- Improve PyCharm and Colab notebook documentation ([6599](https://github.com/holoviz/panel/pull/6599))
- Update gallery endpoint in docs ([6645](https://github.com/holoviz/panel/pull/6645))
- Various smaller documentation fixes and improvements ([6682](https://github.com/holoviz/panel/pull/6682), [#6690](https://github.com/holoviz/panel/pull/6690))

Date: 2024-03-25

This minor release packs a punch both in terms of features, the number of enhancements and bug fixes and perhaps most importantly the addition of a set of tutorials that aim to get novices up-to-speed. The main new feature is a so called `EditableTemplate` which allows arranging dashboards using a drag-and-drop interface and also has strong integration with JupyterLab previews to go from a notebook to a deployed app without having to worry about writing layout code. Next, this release includes a number of need widgets (`NestedSelect`, `DateRangePicker`, `ButtonIcon`), layouts (`Feed`) and panes (`Textual`, `WebP`), and overhauls the autoreload feature with faster and more robust support for reloading entire modules. Lastly this release, along with Param 2.1.0, continues to build on the new reactive expression API making it easy to write reactive expressions and pipelines including support for streaming data with generators. We really appreciate all the work that went into this release and especially want to call out MarcSkovMadsen's effort in putting together the new tutorial materials. There's more work to do but it's a huge step forward and we're excited to hear your feedback. We want to extend a special thanks to our amazing new crop of new contributors including atisor73, Osuwaidi, suryako, Davide-sd, doraaki, mayonnaisecolouredbenz7, CTPassion, J01024, l3ender and Coderambling. Next we want to recognize our returning contributors vaniisgh, cdeil, limx0m, and TheoMaturin, and the finally the dedicated crew of core contributors which include maximelt, Hoxbro, MarcSkovMadsen, ahuang11, mattpap and philippjfr.

Features

- Add `EditableTemplate` to support dashboard builder UI in Jupyter ([5802](https://github.com/holoviz/panel/pull/5802))
- Add `ChatAreaInput` as default text input widget for `ChatInterface` ([6379](https://github.com/holoviz/panel/pull/6379))
- Add `NestedSelect` widget ([5791](https://github.com/holoviz/panel/pull/5791), [#6011](https://github.com/holoviz/panel/pull/6011))
- Add Panel tutorials ([5525](https://github.com/holoviz/panel/pull/5525), [#6208](https://github.com/holoviz/panel/pull/6208), [#6212](https://github.com/holoviz/panel/pull/6212), [#6388](https://github.com/holoviz/panel/pull/6388), [#6425](https://github.com/holoviz/panel/pull/6425), [#6466](https://github.com/holoviz/panel/pull/6466), [#6491](https://github.com/holoviz/panel/pull/6491))
- Add `DateRangePicker` widget ([6027](https://github.com/holoviz/panel/pull/6027))
- Add `Feed` layout and use it as layout for `ChatFeed` ([6031](https://github.com/holoviz/panel/pull/6031), [#6296](https://github.com/holoviz/panel/pull/6296))
- Add `WebP` pane ([6035](https://github.com/holoviz/panel/pull/6035))
- Add `ButtonIcon` ([6138](https://github.com/holoviz/panel/pull/6138))
- Add `Textual` pane ([6181](https://github.com/holoviz/panel/pull/6181))

Enhancements

- Improve `--autoreload` by using watchfiles and selectively reloading packages ([5894](https://github.com/holoviz/panel/pull/5894), [#6459](https://github.com/holoviz/panel/pull/6459))
Load loading indicator from file instead of inlining ([6112](https://github.com/holoviz/panel/pull/6112))
- Allow providing additional stylesheets in `card_params` ([6242](https://github.com/holoviz/panel/pull/6242))
- Add `scroll` options to permanently toggle on layouts ([6266](https://github.com/holoviz/panel/pull/6266))
- Allow choosing position of frozen columns on `Tabulator` ([6309](https://github.com/holoviz/panel/pull/6309))
- Add help message on `ChatFeed` ([6311](https://github.com/holoviz/panel/pull/6311))
- Ensure CSS can be applied to every aspect of `ChatMessage` ([6346](https://github.com/holoviz/panel/pull/6346))
- Add HoloViz logos as `ChatMessage` avatars ([6348](https://github.com/holoviz/panel/pull/6348))
- Add `gap` parameter to `FlexBox` ([6354](https://github.com/holoviz/panel/pull/6354))
- Set default `step` of `DatetimeRangeSlider` to 1 minute ([6373](https://github.com/holoviz/panel/pull/6373))
- Add support for passing objects reference to `FlexBox` ([6387](https://github.com/holoviz/panel/pull/6387))
- Allow editable sliders to be embedded ([6391](https://github.com/holoviz/panel/pull/6391))
- Add `message` into `css_classes` to `ChatMessage` markup ([6407](https://github.com/holoviz/panel/pull/6407))
- Allow appending objects to the `ChatMessage` header & footer ([6410](https://github.com/holoviz/panel/pull/6410))
- Add ability to declare icon label ([6411](https://github.com/holoviz/panel/pull/6411))
- Add title and settings and fix datetime to `Perspective` ([6482](https://github.com/holoviz/panel/pull/6482))
- Warn user if loading extension in VSCode or Colab without `jupyter_bokeh` ([6485](https://github.com/holoviz/panel/pull/6485))
- Throttle updates to Boolean indicators ([6481](https://github.com/holoviz/panel/pull/6481))
- Add `ParamRef` baseclass for `ParamFunction` and `ParamMethod` ([6392](https://github.com/holoviz/panel/pull/6392))
- Add ability to Skip `Param<Ref|Function|Method>` updates ([6396](https://github.com/holoviz/panel/pull/6396))
- Add `Param<Ref|Method|Function>` and `ReactiveExpr` to panes module ([6432](https://github.com/holoviz/panel/pull/6432))
- Set up `param.rx` display accessor on import ([6470](https://github.com/holoviz/panel/pull/6470))
- Allow using Carto tiles in `DeckGL` ([6531](https://github.com/holoviz/panel/pull/6531))
- Improve `VTKJS` binary serialization ([6559](https://github.com/holoviz/panel/pull/6559))
- Ensure component CSS is pre-loaded if possible, avoiding flicker on load ([6563](https://github.com/holoviz/panel/pull/6563))

Styling

- Ensure navbar toggle icon is correct color in `BootstrapTemplate` ([6111](https://github.com/holoviz/panel/pull/6111))
- Change `loading` background filters to work better in dark themes ([6112](https://github.com/holoviz/panel/pull/6112))
- Improve styling of `FileInput` widget ([6479](https://github.com/holoviz/panel/pull/6479))
- Improve Jupyter Preview error handling and error template ([6496](https://github.com/holoviz/panel/pull/6496))
- Add scale animation to icons on hover and click ([6376](https://github.com/holoviz/panel/pull/6376))
- Redesign index pages ([6497](https://github.com/holoviz/panel/pull/6497))
- Improve `Tabulator` editor text color in `Fast` design ([6512](https://github.com/holoviz/panel/pull/6512))
- Ensure `BootstrapTemplate` hamburger icon is white ([6562](https://github.com/holoviz/panel/pull/6562))

Compatibility & Version Updates

- Bump `Perspective` version to 2.9.0 ([5722](https://github.com/holoviz/panel/pull/5722))
- Upgrade to Bokeh 3.4.x ([6072](https://github.com/holoviz/panel/pull/6072))
- Upgrade `Vizzu` to 0.9.3 ([6476](https://github.com/holoviz/panel/pull/6476))
- Bump `JSONEditor` version to 10.0.1 ([6477](https://github.com/holoviz/panel/pull/6477))
- Upgrade to PyScript Next and Pyodide 0.25.0 in `panel convert` ([6490](https://github.com/holoviz/panel/pull/6490))
- Bump vtk.js version to 30.1.0 ([6559](https://github.com/holoviz/panel/pull/6559))

Bug fixes

- Add resize handler for `FloatPanel` ([6201](https://github.com/holoviz/panel/pull/6201))
- Fix serving of global template in notebook ([6210](https://github.com/holoviz/panel/pull/6210))
- Ensure `Tabulator` renders in collapsed `Card` ([6223](https://github.com/holoviz/panel/pull/6223))
- Fix issues with `VTK`, `VTKVolume` and `VTKJS` due to webgpu renderer ([6244](https://github.com/holoviz/panel/issues/6244))
- Ensure `HTML` and other markup panes can be emptied ([6303](https://github.com/holoviz/panel/pull/6303))
- Ensure collapsed `Card` does not cause stretching ([6305](https://github.com/holoviz/panel/pull/6305))
- Ensure notebook preview always uses server resources ([6317](https://github.com/holoviz/panel/pull/6317))
- Remove animation from loading spinner without spin ([6324](https://github.com/holoviz/panel/pull/6324))
- Ensure model is only added/removed from Document once ([6342](https://github.com/holoviz/panel/pull/6342))
- Ensure `loading_indicator` resets when configured with context manager ([6343](https://github.com/holoviz/panel/pull/6343))
- Fix modal overflow and resizing issues ([6355](https://github.com/holoviz/panel/pull/6355))
- Ensure that ripple matches notification size ([6360](https://github.com/holoviz/panel/pull/6360))
- Fully re-render `CodeEditor` on render calls ensuring it displays correctly ([6361](https://github.com/holoviz/panel/pull/6361))
- Ensure `FileDownload` button has correct height ([6362](https://github.com/holoviz/panel/pull/6362))
- Ensure `HTML` model is redrawn if `stylesheets` is emptied ([6365](https://github.com/holoviz/panel/pull/6365))
- Allow providing custom template ([6383](https://github.com/holoviz/panel/pull/6383))
- Ensure `Debugger` renders without error ([6423](https://github.com/holoviz/panel/pull/6423))
- Ensure pending writes are dispatched in order and only from correct thread ([6443](https://github.com/holoviz/panel/pull/6443))
- Ensure layout reuses model if available ([6446](https://github.com/holoviz/panel/pull/6446))
- Improved exception handler in unlocked message dispatch ([6447](https://github.com/holoviz/panel/pull/6447))
- Fix display of interactive `Matplotlib` ([6450](https://github.com/holoviz/panel/pull/6450))
- Ensure `Plotly` pane renders and hides correctly in `Card` ([6468](https://github.com/holoviz/panel/pull/6468))
- Fix issues rendering widget components with `Fast` design ([6474](https://github.com/holoviz/panel/pull/6474))
- Fix binary serialization from JS -> Pyodide ([6490](https://github.com/holoviz/panel/pull/6490))
- Avoid overeager garbage collection ([6518](https://github.com/holoviz/panel/pull/6518))
- Fix floating point error in `IntRangeSlider` ([6516](https://github.com/holoviz/panel/pull/6516))
- Load JS modules from relative path ([6526](https://github.com/holoviz/panel/pull/6526))
- Ensure no events are dispatched before the websocket is open ([6528](https://github.com/holoviz/panel/pull/6528))
- Ensure `Markdown` parsing does not choke on partial links ([6535](https://github.com/holoviz/panel/pull/6535))
- Fixes to ensure larger `PDF`s can be rendered ([6538](https://github.com/holoviz/panel/pull/6538))
- Ensure `IPywidget` comms are only opened once ([6542](https://github.com/holoviz/panel/pull/6542))
- Fixes for message handling in Jupyter Preview context ([6547](https://github.com/holoviz/panel/pull/6547))
- Fix unnecessary loading of `ReactiveHTML` resources ([6552](https://github.com/holoviz/panel/pull/6552))
- Ensure `Template.raw_css` has higher precedence than default template CSS ([6554](https://github.com/holoviz/panel/pull/6554))
- Avoid asyncio event loop startup issues in some contexts ([6555](https://github.com/holoviz/panel/pull/6555))
- Ensure column subset is retained on `Tabulator.style` ([6560](https://github.com/holoviz/panel/pull/6560))
- Ensure bokeh mathjax bundle when mathjax extension is loaded in notebook ([6564](https://github.com/holoviz/panel/pull/6564))

Chat Components

- Ensure `ChatInterface` respect supplied default user ([6290](https://github.com/holoviz/panel/pull/6290))
- Ensure `ChatMessage` internals correctly respect `Design` ([6304](https://github.com/holoviz/panel/pull/6304))
- Fix `ChatInterface` `stop` button for synchronous functions ([6312](https://github.com/holoviz/panel/pull/6312))
- Include `stylesheets` downstream, including layouts in ChatMessage ([6405](https://github.com/holoviz/panel/pull/6405))
- Ensure `ChatMessage` `header` updates dynamically ([6441](https://github.com/holoviz/panel/pull/6441))
- Ensure streaming `ChatMessage` on `ChatInterface` and mention `serialize` ([6452](https://github.com/holoviz/panel/pull/6452))
- Ensure ChatInterface supports chat input without `value_input` parameter ([6505](https://github.com/holoviz/panel/pull/6505))
- Ensure word breaks to avoid overflow in `ChatMessage` ([6187](https://github.com/holoviz/panel/pull/6187), [#6509](https://github.com/holoviz/panel/pull/6509))
- Ensure nested disabled state stays disabled on `ChatFeed` ([6507](https://github.com/holoviz/panel/pull/6507))
- Allow streaming `None` as the initial `ChatMessage` value ([6522](https://github.com/holoviz/panel/pull/6522))

Documentation

- Add Roadmap to documentation ([5443](https://github.com/holoviz/panel/pull/5443))
- Refactor `ReactiveHTML` docs ([5448](https://github.com/holoviz/panel/pull/5448), [#6358](https://github.com/holoviz/panel/pull/6358))
- Improve `HoloViews` reference guide ([6065](https://github.com/holoviz/panel/pull/6065))
- Improve the user experience for resetting Jupyterlite ([6198](https://github.com/holoviz/panel/pull/6198))
- Add explanation docs about APIs ([6289](https://github.com/holoviz/panel/pull/6289), [#6469](https://github.com/holoviz/panel/pull/6469))
- Add section headers to Chat reference documentation ([6370](https://github.com/holoviz/panel/pull/6370))
- Migrate gallery to new Anaconda DSP instance ([6413](https://github.com/holoviz/panel/pull/6413))
- Improve home page ([6422](https://github.com/holoviz/panel/pull/6422))
- Adding AWS deployment to documentation ([6434](https://github.com/holoviz/panel/pull/6434))
- Update Streamlit comparison ([6467](https://github.com/holoviz/panel/pull/6467))
- Add logging how-to guide ([6511](https://github.com/holoviz/panel/pull/6511))
- Document pygments dependency for code syntax highlighting ([6519](https://github.com/holoviz/panel/pull/6519))
- Add how-to guide on configuring PyCharm ([6525](https://github.com/holoviz/panel/pull/6525))

Deprecations & Removals

- Remove `Ace` alias for `CodeEditor`
- Remove `ChatBox` which has been replaced by `panel.chat` components
- Remove `HTML.style` which is now replaced with `HTML.styles`
- Remove `Trend.title` which is now replaced by `Trend.name`
- Remove `Viewable.app` which is now replaced with `pn.io.notebook.show_server`
- Remove `Viewable.background` which is now replaced with `Viewable(styles={'background': ...})`
- Remove `Viewable.pprint` which is now replaced with `print(Viewable(...))`

Date: 2024-01-24

This patch release fixes an important regression in the 1.3.6 release that resulted in global state to be incorrectly resolved in certain cases. Many thanks to our new contributor fohrloop and our maintainers ahuang11, Hoxbro and philippjfr for contributing to this release.

Bug fixes

- Ensure `ReactiveHTML` correctly resets `Event` parameters ([6247](https://github.com/holoviz/panel/pull/6247))
- Fix `ChatFeed` / `ChatInterface` tests and async generator placeholders ([6245](https://github.com/holoviz/panel/pull/6245))
- Fix logic when looking up `pn.state.curdoc` ([6254](https://github.com/holoviz/panel/pull/6254))
- Handle margin=None in layout sizing mode computation ([6267](https://github.com/holoviz/panel/pull/6267))

Compatibility

- Updates for compatibility with pandas 2.2 ([6259](https://github.com/holoviz/panel/pull/6259))

Documentation

- Fix typos and add a cross-reference in docs (User Profiling) ([6263](https://github.com/holoviz/panel/pull/6263))
- Improve documentation on `TextAreaInput` ([6264](https://github.com/holoviz/panel/pull/6264))