Releases · holoviz/panel

@dalthviz

This patch release adds a new option to disable FileDropper previews and fixes a regression when updating Column children in Bokeh<3.7. Additionally, it includes a number of documentation improvements.
Many thanks to our returning contributors @dalthviz, @emmanuel-ferdman, @MarcSkovMadsen, and @hoxbro

Enhancements

Add option to disable FileDropper previews (#7944)
--index-titles help string typo fix and don't call title on user input (#7935)

Bug fixes

Migrate to correct logger interface (#7931)
Column updates not working for Bokeh<3.7 (#7948)

Documentation

Fix image links in Azure documentation (#7938)

@dalthviz

This minor release is not as jam-packed as previous minor releases but adds a number of quality of life improvements, bug fixes and features along with version and compatibility updates for a number of JS dependencies. Many thanks to some of our more frequent contributors @dalthviz, @etihwo, our new contributor @emmanuel-ferdman and our maintainers @hoxbro, @MarcSkovMadsen and @philippjfr.

Features

Add a secondary (right) sidebar to the FastListTemplate (#7774)
Add Date(Time)Picker.allowInput option (#7886)
Add Markdown.disable_anchors option (#7902)
Add config.cache_path variable to configure default location for diskcache (#7903)
Support custom cookie path (#7911)
Allow customizing index page titles with --index-titles CLI option (#7916)
Add Image.target option to configure where to open link_url (#7924)

Enhancements

Display parameter name in error messages (#7879)
Improve Material design styling (#7891, #7917)
Improve logic for computing Tabulator page size automatically (#7915)

Versions and Compatibility

Bump Ace CodeEditor version 1.40.1 and add themes (#7874)
Bump pyodide version to 0.27.5 (#7905)
Bump ECharts version to 5.6.0 (#7905)
Bump JSONEditor version to 10.2.0 (#7905)
Bump Perspective version to 3.6.1 (#7919)

Bug fixes

Deduplicate components before compiling (#7887)
Avoid boomeranging of events after hold is applied (#7892)
Handle .ico image base64 mime-type correctly (#7894)
Ensure FileDropper height is not limited (#7898)
Ensure correct stylesheet cache is used by theme hooks when component is shared between sessions (#7896)
Reset BaseTemplate._documents correctly on autoreload (#7897)
Ensure widget CSS is loaded correctly when server path is prefixed (#7900)
Correct display Tabulator with multi index and multi index column (#7907)
Ensure stretch and scale sizing_mode does not cause overflow in container (#7928)

Documentation

Document caching of dependencies by combining cache with depends (#7876)
Remove deprecated keyword in doc for DateRangeSlider and DateTimeRangSlider (#7893)
Add guidance on troubleshooting OAuth issues (#7921)

@malemburg

This release introduces a number of performance improvements related to rendering of children in layouts and ESM components, a number of bug fixes and a number of documentation improvements. We are pleased to welcome @malemburg as a new contributor and want to thank @s-alexey, @Coderambling, @etihwo and our core maintainer team including @hoxbro, @ahuang11, @MarcSkovMadsen and @philippjfr for their contributions to this release.

Enhancements

Implement smarter Column child rendering #7846
Optimize ReactComponent child renders #7828
Add indent and soft_tabs options to CodeEditor #7831
Allow creating Param.widget without instantiating object, speeding up Widget.from_param #7867

Bug fixes

Fix handling of React based AnyWidgetComponent types #7820
Cache ESM render modules #7827
Check for None in select function for PyComponent #7837
Fix for AttributeError in auth.py:CodeChallenge OAuth login #7844
Fix error when old_objects is empty in _get_objects() #7842
Ensure ReactiveESM renders elements #7853
Ensure ESM shared resources are watched properly #7856
Fix Material design Tabulator header color #7855
Ensure current view and selection lookups on Tabulator handle None case #7858
Ensure Modal events are targeted to correct model #7860
Ensure ChatFeed has inherent height #7861
Ensure Markdown code blocks are always left aligned #7862
Gracefully handle ECharts delayed rendering #7869

Documentation

List version agnostic wheel URLs in WASM standalone docs #7857
Correct ClassSelector keyword in build_todo.md #7819
Fix documentation of --oauth-extra-params #7865
Fix minor issues in FastAPI docs #7866
Clarify OAuth redirect uri #7868
Add section in load balancing about Bokeh extensions (#7832)

@s-alexey

This release primarily introduces improvements for ESM and React components and refactoring to make it easy to subclass existing components. This is an effort to make it easier to provide alternative implementations for Panel components. Additionally this release includes compatibility for Bokeh 3.7, bug fixes for TextEditor and a variety of other bug fixes. Many thanks to our new contributor @s-alexey, our returning contributors @Coderambling and the core maintainer team including @hoxbro, @ahuang11 and @philippjfr.

Enhancements

Make it easier to subclass components (#7730, #7744, #7785)
Allow model.useState in ReactComponents to reference nested parameter values (#7743)
Allow providing shared ESM modules (#7757)
Allow defining root node for ReactComponent (#7787)
Improve pretty printing in HoloViews pane (#7775)
Allow serializing joint dict/Parameterized types on DataModel (#7789)
Improve ListLike and NamedListLike to better match Python list behavior (#7794)
Improve rendering of ReactComponent children (#7802)
Allow overriding Param input widgets (#7813)

Performance

Avoid redundant list operations in ListLike (#7764)
Optimize ipywidget reference transform (#7778)

Bug fixes

Correctly handle empty source files (#7732)
Add extra guard around get_ipython check (#7734)
Ensure ReactComponent children are sized correctly (#7741)
Ensure ChatStep does not toggle from failed to success (#7742)
Ensure Feed and scrollable layout children heights are not fixed (#7747)
Declare more Child parameters on various components (#7749)
Do not sync parameters mapped to None on on ESM components (#7750, #7753)
Always include esm.css for ESM components (#7752)
Do not duplicate stylesheets (d133eb9)
Ensure ChatStep text does not overflow container (#7770)
Refactor ChatFeed post hook ensuring it processes correct message (#7722)
Ensure hooks are applied to root components with Fast design (#7777)
Ensure resource mode is set in notebooks (#7776)
Clear state cookie if OAuth access token expired and can't be refreshed (#7780)
Fix formatting in TextEditor widget (#7739)
Use Ace version with no require.js dependency (#7781)
Ensure multiple sequential notifications render (#7790)
Style correct column when frozen Tabulator column is an index (#7792)
Ensure IconButton tooltip timer is cleared on multiple mouseenter events (#7798)
Ensure pre-processors are applied to ESM children (#7799)
Ensure outputs are laid out correctly after initial render of EditableTemplate (#7816)
Fix regressiong related to providing Path to ESM component stylesheets (#7809)

Compatibility

Compatibility with Bokeh 3.7 (#7724, #7815)
Update TextEditor widget to Quill.js 2.0.2 (#7739)
Update Plotly pane to Plotly.js 3.0.1 (#7731)

Documentation

Incorrect hover text for max_width and max_height: both said Minimum instead of Maximum (#7729)
Various minor documentation updates (#7719, #7738, #7746, #7755, #7760, #7761, #7763)

@fabiovincenzi

This patch release primarily addresses issues running Panel behind a reverse proxy, improves the developer experience of working with custom ESM bundles and adds compatibility for Plotly 6.0. Congratulations to @fabiovincenzi and @pankajp for their first contribution fixing inlining of stylesheets. Many thanks to to our returning contributors @ceball, @Azaya89 and @Coderambling as well as our core developer team including @ahuang11, @maximlt, @hoxbro and @philippjfr for contributing to this release.

Enhancements

Add ChatFeed.scroll_to method (#7671)
Implement watch feature for panel compile command (#7683)
Allow ESM components to load CSS bundles (#7685, #7691)
Generalize ReactiveESM.select so children are automatically detected (#7699)

Bug fixes

Ensure errors in sync periodic callbacks are logged (#7665)
Reset visible_range when Feed.objects are updated (#7673)
Ensure ESM bundles correctly resolve component implementations (#7684, #7698)
Fix default avatar in send/stream (#7677)
Ensure index redirects are relative to fix index page behind a reverse proxy (#7704)
Ensure root_url is correctly determined during auth (#7680)
Ensure the modal is on top in EditableTemplate (#7710)
Ensure Tabulator selection is recalculated after filtering (#7712)
Fix custom login endpoints (#7714)
Ensure type checkers can correctly infer extension argument types (#7709)
Ensure custom components and extensions respect resource mode in notebooks (#7701, #7716)
Ensure in process events are cleaned up after they are applied (#7717)

Compatibility

Compatibility with Plotly 6.0 (#7681, #7682)
Bump pyodide version to 0.27.2 and PyScript version to 2025.2.1 (#7718)

Docs

Add links to other HoloViz libraries to the sidebar (#7674)
Minor documentation fixes (#7664, #7668, #7692)

@kdheepak

This release adds a number of features including a standalone Modal component, the ability to infer widget parameters from values, and the ability to easily edit a ChatMessage. Additionally it includes a number of enhancements for styling, particularly in dark themes, other enhancements for chat components and a large number of bug fixes. Many thanks for our returning contributor @kdheepak, our new contributors @pgierz, @jonatantreijs and @etihwo, and of course the whole maintainer team including @ahuang11, @MarcSkovMadsen @hoxbro, @maximlt and @philippjfr.

Features

Add PAM authentication support (#6861)
Add Widget.from_values method (#7033)
Add a standalone Modal layout (#7083)
Introduces ChatMessage and ChatFeed edit functionality (#7559)

Enhancements

Allow ChatFeed.callback_exception to accept a callable and 'traceback' (alias for verbose) (#7558)
Fix Accordion active_header_background in dark theme (#7576)
Increase default max character limit on ChatAreaInput (#7562)
Fix chat message alignment issues (#7563)
Make Markdown pane line breaking behavior configurable (#7582)
Improve styling of chat components in dark theme (#7601, #7602)
Automatically scroll when streaming to ChatFeed and ChatStep (#7608)
Add support for remote filesystems on FileSelector (#7618)
Add support for FigureWidget events on Plotly pane (#7654, #7662)

Bug fixes

Fix Azure Oauth issues (#7587)
Correctly display file not found paths in panel convert (#7589)
Fix Tabulator.patch when table is filtered (#7621)
Ensure esbuild can be detected on windows during panel compile (#7625)
Fix various issues styling Tabulator when it is wider than the viewport (#7626)
Fix resource loading when serving Panel app on nested FastAPI endpoint (#7627)
Fix panel oauth-secret command (#7628)
Ensure fonts are applied to NotificationArea (#7633)
Handle session context where session is not defined (#7634)
Ensure CompositeWidget can be populated in callback (#7636)
Correctly identify skimage and PIL packages when converting to pyodide (#7637)
Ensure we use CDN resources in pyodide (#7638)
Consistently apply sizing_mode to FileSelector components (#7640)
Ensure tasks are cancelled correctly (#7641)
Ensure NotificationArea stylesheet loads in panel-preview (#7643)
Ensure NestedSelect updates when options are changed (#7649)
Ensure ButtonIcon displays an icon during click (#7650)

Compatibility and Updates

Update panel convert to latest versions of pyodide and pyscript (#7584)
Bump plotly.js version to 2.35.3 (#7657)
Bump tabulator.js version to 6.3.1 (#7656)

Documentation

Ensure Open in JupyterLite links work (#7622)
Add admonitions for outdated guides and minor corrections (#7635)
Add form tutorial (#7568)
Fix and reorganize API docs (#7659)

@mayonnaisecolouredbenz7

This release fixes a regression causing .node_modules to be bundled into our released wheel and introduces a number of bug fixes and enhancements. Many thanks to @mayonnaisecolouredbenz7, @pmeier, @Italirz, @Coderambling and our maintainer team @MarcSkovMadsen, @hoxbro, @ahuang11, @thuydotm, @maximlt and @philippjfr.

Enhancements

Add ability to scroll_to a particular object on Column (#7206)
Add pointer when hovering on Markdown copy button (#7490)
Allow streaming to ChatStep (#7520)
Improve ChatMessage repr (#7521)
Add ChatInterface button tooltips (#7552)

Bug fixes

Ensure Notifications are cleaned up correctly (#4964)
Ensure FileDownload label text updates correctly (#7489)
Fix Tabulator aggregation behavior (#7450)
Fix typing for .servable method (#7530)
Ensure NestedSelect respects disabled parameter (#7533)
Ensure errors in hooks aren't masked by fallback to different signature (#7502)
Ensure Notifications are only shown once if scheduled onload (#7504)

Documentation

Improve hold how-to guide (#7487, #7500)

Maintenance

Enable strict type checking (#7497)
Ensure node_modules aren't bundled into package (#7526)
Internal cleanup of compatibility code for older param versions (#7527)

Compatibility

Compatibility for websockets 14 when running on FastAPI server (#7491)
Compatibility with Textual 0.86 (#7501)
Compatibility with Altair 5.5.0 (#7523)
Bump Vizzu version to 0.15 (#7485)

@MP-MaximilianLattka

This release primarily focuses on improving the ESM components including fixes for serialization of parameter values, improvements for compiling bundles, and building custom layouts. Additionally this release includes the new DatetimeSlider, adds a copy button to codeblocks in Markdown panes, improves responsive sizing for Plotly and starts adding better support for Polars. Many thanks and a warm welcome to our new contributor @MP-MaximilianLattka as well as our maintainer team, including @hoxbro, @thuydotm, @ahuang11, @MarcSkovMadsen and @philippjfr.

Enhancements

Add DatetimeSlider widget (#7374)
Improve Jupyter preview error handling (#7434)
Add copy button to Markdown codeblocks (#7451)
Various improvements for writing ESM components (#7462)
Log authorization callback errors (#7463)
Support polars in pn.cache (#7472)
Improve and document hold utility (#7474)
Improve how panel compile collects bundles (#7477)

Bug fixes

Fix issues detecting changed property values during serialization (#7432)
Ensure ESM compilation correctly detects file extension (#7446)
Ensure parameter overrides are applied to ESM components (#7452)
Ensure component Children parameter correctly resolves when multiple types are defined (#7454)
Fix issues using Jupyter Preview with notifications enabled (#7466)
Ensure HTML/Markdown streaming does not freeze during rapid updates (#7480)
Ensure Plotly sizes correctly on initial render (#7483)

@chryshumble

This release fixes a number of smaller regressions related to Tabulator row_content, ensures --dev/--autoreload picks up on external modules correctly and resolves OAuth guest endpoints correctly. Additionally it introduces some enhancements and bug fixes for custom components, such as adding support for loading custom components ESM Javascript bundles from the inbuilt endpoint ensuring that the bundle can be cached by the browser. Many thanks and welcome to our new contributors @chryshumble and @haojungc, our returning contributors @TheoMathurin, @aktech and @Coderambling and the core maintainer team @hoxbro, @ahuang11, @MarcSkovMadsen and @philippjfr for their contributions to this release.

Enhancements

Sync dark mode on browser_info object (#7382)
Allow loading custom component ESM bundles from URL (#7410, #7412)

Bug fixes

Address issues with Tabulator embed_content and optimize row expansion (#7364)
Prevent pipeline network plot from linking with other plots (#7372)
Various fixes for custom component compilation (#7381)
Fix OAuth guest endpoint (#7385)
Fix ReactiveESM._importmap typing (#7392)
Ensure that autoreload records modules to watch before startup (#7399)
Prevent Tabulator from overlapping when max_height is set (#7403)
Do not mutate layout Children inplace (#7417)
Set Tabulator null formatter to empty string (#7421)
Ensure Tabulator table content does not overflow (#7425)

Compatibility

Upgraded Tabulator version to 6.3 (#7419)

Documentation

Update components_overview.md with text fixes (#7335)
Corrected styles in doc (#7371)
Fix typo in panel.io.server docstring (#7405)

@jrycw

This release is a small patch release primarily addressing a regression handling selections on multi-indexed data on the Tabulator widget along with a number of documentation improvements. Many thanks to @jrycw along with @MarcSkovMadsen, @hoxbro and @philippjfr for their contributions to this release.

Bug fixes

Fix regression handling selection on multi-indexed Tabulator data (#7336)
Fix Fast template theme toggle color (#7341)

Documentation

Fix typo for FastListTemplate reference example (#7339)
Fix custom component docstrings (#7342)
Improve plotly style guide (#7346)
Ensure sidebar toggle patch is loaded correctly (#7349)
Fix and update WebLLM example (#7351)
Correctly document step unit on DateSlider (#7353)

Uh oh!

Releases: holoviz/panel

Version 1.7.1

Enhancements

Bug fixes

Documentation

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Version 1.7.0

Features

Enhancements

Versions and Compatibility

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Version 1.6.3

Enhancements

Bug fixes

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Version 1.6.2

Enhancements

Performance

Bug fixes

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Version 1.6.1

Enhancements

Bug fixes

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Version 1.6.0

Features

Enhancements

Bug fixes

Compatibility and Updates

Documentation

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Version 1.5.5

Enhancements

Bug fixes

Documentation

Maintenance

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Version 1.5.4

Enhancements

Bug fixes

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Version 1.5.3

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Bug fixes

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Version 1.5.2

Bug fixes

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