copy tooltip on focus. Upgrade PDT version (#5848)

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## Why are these changes needed?

(Partially?) fixes accessibility issue (19). Question out to
accessibility team whether its enough.

Migrating to 16.0 for accessibility fixes. Not moving to 16.1 yet
because of a weird change to the 'Show Source' link's appearance

## Related issue number

#5630 

## Checks

- [ ] I've included any doc changes needed for
<https://microsoft.github.io/autogen/>. See
<https://github.com/microsoft/autogen/blob/main/CONTRIBUTING.md> to
build and test documentation locally.
- [ ] I've added tests (if relevant) corresponding to the changes
introduced in this PR.
- [ ] I've made sure all auto checks have passed.

Co-authored-by: Ryan Sweet <rysweet@microsoft.com>

python/packages/autogen-core/docs/src/_static/custom.css

@@ -120,3 +120,11 @@ html[data-theme="light"] .bd-header {
 .bd-article .docutils .cell_output .output .highlight > pre:focus-visible{
   border: 2px outset var(--pst-color-secondary);
 }
+
+/* Copy button */
+.bd-article .docutils .docutils .copybtn:focus-visible:after {
+  /* border: 10px outset var(--pst-color-primary); */
+    display: block;
+    opacity: 1;
+    visibility: visible;
+}

python/packages/autogen-core/docs/src/_static/custom.js

@@ -1,5 +1,6 @@
 document.addEventListener('DOMContentLoaded', function() {
   document.querySelectorAll('.copybtn').forEach(button => {
+      // Return focus to copy button after activation
       button.addEventListener('click', async function(event) {
           // Save the current focus
           const focusedElement = document.activeElement;
@@ -17,13 +18,9 @@ document.addEventListener('DOMContentLoaded', function() {
       // Save the element that had focus before opening the search
       const previousFocus = document.activeElement;
 
-      // Logic to open the search goes here
-
       // Add an event listener to handle closing the search
       document.addEventListener('keydown', (event) => {
         if (event.key === 'Escape') {
-          // Logic to close the search goes here
-
           // Restore focus to the previous element
           previousFocus.focus();
         }

python/packages/autogen-core/docs/src/conf.py

@@ -92,7 +92,6 @@ html_logo = "_static/images/logo/logo.svg"
 html_favicon = "_static/images/logo/favicon-512x512.png"
 
 html_theme_options = {
-
     "header_links_before_dropdown": 6,
     "navbar_align": "left",
     "check_switcher": False,

python/packages/autogen-core/pyproject.toml

@@ -60,7 +60,7 @@ dev = [
 
     # Documentation
     "myst-nb==1.1.2",
-    "pydata-sphinx-theme==0.15.4",
+    "pydata-sphinx-theme==0.16.0",
     "sphinx-copybutton",
     "sphinx-design",
     "sphinx",

python/uv.lock

@@ -557,7 +557,7 @@ dev = [
     { name = "opentelemetry-sdk", specifier = ">=1.27.0" },
     { name = "pip" },
     { name = "polars" },
-    { name = "pydata-sphinx-theme", specifier = "==0.15.4" },
+    { name = "pydata-sphinx-theme", specifier = "==0.16.0" },
     { name = "pygments" },
     { name = "python-dotenv" },
     { name = "redis" },
@@ -722,8 +722,8 @@ requires-dist = [
     { name = "azure-ai-inference", marker = "extra == 'azure'", specifier = ">=1.0.0b7" },
     { name = "azure-core", marker = "extra == 'azure'" },
     { name = "azure-identity", marker = "extra == 'azure'" },
-    { name = "chromadb", marker = "extra == 'task-centric-memory'", specifier = ">=0.6.3" },
     { name = "chromadb", marker = "extra == 'chromadb'" },
+    { name = "chromadb", marker = "extra == 'task-centric-memory'", specifier = ">=0.6.3" },
     { name = "diskcache", marker = "extra == 'diskcache'", specifier = ">=5.6.3" },
     { name = "docker", marker = "extra == 'docker'", specifier = "~=7.0" },
     { name = "ffmpeg-python", marker = "extra == 'video-surfer'" },
@@ -5825,21 +5825,20 @@ wheels = [
 
 [[package]]
 name = "pydata-sphinx-theme"
-version = "0.15.4"
+version = "0.16.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "accessible-pygments" },
     { name = "babel" },
     { name = "beautifulsoup4" },
     { name = "docutils" },
-    { name = "packaging" },
     { name = "pygments" },
     { name = "sphinx" },
     { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/67/ea/3ab478cccacc2e8ef69892c42c44ae547bae089f356c4b47caf61730958d/pydata_sphinx_theme-0.15.4.tar.gz", hash = "sha256:7762ec0ac59df3acecf49fd2f889e1b4565dbce8b88b2e29ee06fdd90645a06d", size = 2400673 }
+sdist = { url = "https://files.pythonhosted.org/packages/91/c3/5240f2a5dc0b4856655c003466f70aa50d676b1709e5b04f0bee296bbd28/pydata_sphinx_theme-0.16.0.tar.gz", hash = "sha256:721dd26e05fa8b992d66ef545536e6cbe0110afb9865820a08894af1ad6f7707", size = 2407197 }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/e7/d3/c622950d87a2ffd1654208733b5bd1c5645930014abed8f4c0d74863988b/pydata_sphinx_theme-0.15.4-py3-none-any.whl", hash = "sha256:2136ad0e9500d0949f96167e63f3e298620040aea8f9c74621959eda5d4cf8e6", size = 4640157 },
+    { url = "https://files.pythonhosted.org/packages/ba/92/38f384061e1361fac7092c35e932c0e08026fb9080bf3fbf05f4c3bb6bda/pydata_sphinx_theme-0.16.0-py3-none-any.whl", hash = "sha256:18c810ee4e67e05281e371e156c1fb5bb0fa1f2747240461b225272f7d8d57d8", size = 6739948 },
 ]
 
 [[package]]