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This release reverts the change made in v1.6.3 (to no longer recurse into list-like objects when searching for JavaScript strings wrapped in JS()). Although that change helped prevent infinite recursion in some cases, it ultimately broke too many existing widgets that relied on the previous behavior. If you encounter infinite recursion errors (“C stack usage is too close to the limit”), the best strategy is to coerce the offending items to a character string. (#478)
JS(), unless the object has the class "list" or "data.frame". This stops htmlwidgets from (possibly infinitely) recursively searching objects that are not actually recursive. Widget authors who relied on the previous behavior should ensure that their widget’s JS() calls are wrapped in objects that have the class "list" or "data.frame". (#467)as.tag.htmlwidget() now includes ... in it’s function signature (for compatibility with the htmltools::as.tags generic).shinyWidgetOutput() and sizingPolicy() both gain a new fill parameter. When TRUE (the default), the widget’s container element is allowed to grow/shrink to fit it’s parent container so long as that parent is opinionated about its height and has been marked with htmltools::bindFillRole(x, container = TRUE). (#442)
bslib::card_body_fill()sizingPolicy(fill = FALSE)/shinyWidgetOutput(fill = FALSE) and/or allowing users to customize these settings (i.e., add a fill argument to the customWidgetOutput() function signature).shinyWidgetOutput()’s reportSize argument now defaults to TRUE. This way, calling shiny::getCurrentOutputInfo() inside a shinyRenderWidget() context will report the current height and width of the widget.saveWidget(selfcontained=TRUE) now uses the {rmarkdown} package to discover and call pandoc, which fixes a couple existing issues and helps “future proof” this code path from future changes to pandoc.saveWidget(selfcontained=TRUE) now correctly prevents HTML from being interpreted as markdown. (#401)getDependency() no longer includes an absolute src path in its return value. (#384)Added a reportTheme argument to shinyWidgetOutput(). If TRUE, CSS styles of the widget’s output container are made available to shiny::getCurrentOutputInfo(), making it possible to provide ‘smart’ styling defaults in a renderWidget() context. (#361)
shinyRenderWidget() now has a cacheHint parameter, for use with Shiny’s new bindCache() function. (#391)
Support a new PACKAGE::widget_html.WIDGETNAME convention for defining custom widget HTML. This replaces the earlier PACKAGE::WIDGETNAME_html convention, which continues to work but may be deprecated at some point in the future. The goal for the new convention is to prevent accidentally matching functions that were never intended for this purpose. (Thanks, @thebioengineer!) (#376)
Export the JSEvals function, allowing other packages to support JS() in non-widget contexts.
saveWidget() now file argument now properly handles relative paths. (#299)
Fixed an issue with passing named function declarations to JS() and onRender() (introduced by v1.4). (#356)
shiny::uiOutput() to render a widget) with any version of shiny prior to 1.4. This issue was introduced by # htmlwidgets 1.5. (#351)renderValue calls to occur at an earlier point in Shiny’s initialization process than with earlier versions of Shiny. (#345)onRender() and JS() (#329).All files and directories under the inst/htmlwidgets/ directory of a widget package will be copied when a widget is rendered due to an unintended change in #306. Only the single WIDGET.js file should be copied (where WIDGET is the widget name). Fixed via #312.
Support for async Shiny. Widget render functions that use the default implementation of htmlwidgets::shinyRenderWidget can receive promises of widget objects (you can, of course, continue to use regular widget objects as well).
See https://rstudio.github.io/promises for more about async Shiny.
htmlwidgets can be created without a package, without yaml, and/or without JavaScript binding. (#304, #305)
Use RStudio Page Viewer for full page widgets.
Fix #297: Setting background in saveWidget() is broken
Starting with R 3.4.0, a "Calling ’structure(NULL, *)’ is deprecated" warning would occur when shinyRenderWidget encountered a NULL value. (#269)
Fix edge case where using dynamic HTML dependencies from a widget binding’s JS factory function would fail.
Export getDependency function
onRender hooks were firing too early when used in Shiny apps.
Widget IDs: only restore random.seed when non-NULL
Pass knitr options to saveWidget
Ensure that scaffoldWidget opens files correctly within RStudio
The resize handler also works for the JavaScript events shown.bs.collapse and hidden.bs.collapse now so that widgets inside the Bootstrap collapse class can be displayed
Fix references to vignettes in documentation
Add elementId parameter to widget function generated by scaffoldWidget
More robust method of generating unique widget IDs
Modify advanced and sizing vignettes to use new style widget declarations
Introduce new scheme for defining JavaScript bindings that will make it easier for widgets to gain access to other widget instances on the page.
Add onRender hook for widgets to execute custom JavaScript code after rendering.
Add appendContent and prependContent functions for adding HTML to a widget rendered in a static context (i.e. R console or Rmd)
Fix a bug where the string </body></html> in the widget data caused saveWidget() to have malformed output. (#168)
Tweak pandoc conversion used in saveWidget to prevent hanging with large htmlwidget script data elements (use “markdown” rather than “markdown-strict” as input format)
Increase pandoc stack size to 512M for saveWidget (often required for e.g. larger embedded leaflet maps). Stack size can also be controlled by the pandoc.stack.size option.
Import latest version of with_pandoc_safe_environment from rmarkdown
Fix issue that prevented calling renderValue() from within resize()
Add background parameter to saveWidget function
Fix a bug where </script> appearing in widget data would break parsing
Fix a bug where multiple widgets on a page caused all but one to miss resize events
Sync vignettes with contents of htmlwidgets website
Use minified files while scaffolding widget wherever available
Suppress viewing widgets in non-interactive R sessions by default
Export the HTMLWidgets.staticRender function
Add a preRenderHook for widgets
Use jsonlite rather than RJSONIO for JSON serialization
Call widget.resize in more situations
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