Use <details> element for collapsibles (#690)

* Remove unnecessary call to 'collapseSection'

The call is unnecessary since there is no corresponding toggle for hiding the
section of orphan instances.

* Use <details> for collapsibles

This makes them work even when JS is disabled. Closes #560.

1 files changed, 48 insertions, 38 deletions

diff --git a/html-test/ref/HiddenInstances.html b/html-test/ref/HiddenInstances.html
index 5a1329fc..b3586649 100644
--- a/html-test/ref/HiddenInstances.html
+++ b/html-test/ref/HiddenInstances.html
@@ -39,22 +39,24 @@
 	>HiddenInstances</p
 	></div
       ><div id="synopsis"
-      ><p id="control.syn" class="caption expander" onclick="toggleSection('syn')"
-	>Synopsis</p
-	><ul id="section.syn" class="hide" onclick="toggleSection('syn')"
-	><li class="src short"
-	  ><span class="keyword"
-	    >class</span
-	    > <a href="#"
-	    >VisibleClass</a
-	    > a</li
+      ><details id="syn"
+	><summary
+	  >Synopsis</summary
+	  ><ul class="details-toggle" data-details-id="syn"
 	  ><li class="src short"
-	  ><span class="keyword"
-	    >data</span
-	    > <a href="#"
-	    >VisibleData</a
-	    ></li
-	  ></ul
+	    ><span class="keyword"
+	      >class</span
+	      > <a href="#"
+	      >VisibleClass</a
+	      > a</li
+	    ><li class="src short"
+	    ><span class="keyword"
+	      >data</span
+	      > <a href="#"
+	      >VisibleData</a
+	      ></li
+	    ></ul
+	  ></details
 	></div
       ><div id="interface"
       ><h1
@@ -73,14 +75,14 @@
 	    >Should be visible</p
 	    ></div
 	  ><div class="subs instances"
-	  ><p id="control.i:VisibleClass" class="caption collapser" onclick="toggleSection('i:VisibleClass')"
-	    >Instances</p
-	    ><div id="section.i:VisibleClass" class="show"
-	    ><table
+	  ><details id="i:VisibleClass" open="open"
+	    ><summary
+	      >Instances</summary
+	      ><table
 	      ><tr
 		><td class="src clearfix"
 		  ><span class="inst-left"
-		    ><span id="control.i:ic:VisibleClass:VisibleClass:1" class="instance expander" onclick="toggleSection('i:ic:VisibleClass:VisibleClass:1')"
+		    ><span class="instance details-toggle-control details-toggle" data-details-id="i:ic:VisibleClass:VisibleClass:1"
 		      ></span
 		      > <a href="#"
 		      >VisibleClass</a
@@ -97,14 +99,16 @@
 		  ></tr
 		><tr
 		><td colspan="2"
-		  ><div id="section.i:ic:VisibleClass:VisibleClass:1" class="inst-details hide"
-		    ></div
+		  ><details id="i:ic:VisibleClass:VisibleClass:1"
+		    ><summary class="hide-when-js-enabled"
+		      >Instance details</summary
+		      ></details
 		    ></td
 		  ></tr
 		><tr
 		><td class="src clearfix"
 		  ><span class="inst-left"
-		    ><span id="control.i:ic:VisibleClass:VisibleClass:2" class="instance expander" onclick="toggleSection('i:ic:VisibleClass:VisibleClass:2')"
+		    ><span class="instance details-toggle-control details-toggle" data-details-id="i:ic:VisibleClass:VisibleClass:2"
 		      ></span
 		      > <a href="#"
 		      >VisibleClass</a
@@ -121,12 +125,14 @@
 		  ></tr
 		><tr
 		><td colspan="2"
-		  ><div id="section.i:ic:VisibleClass:VisibleClass:2" class="inst-details hide"
-		    ></div
+		  ><details id="i:ic:VisibleClass:VisibleClass:2"
+		    ><summary class="hide-when-js-enabled"
+		      >Instance details</summary
+		      ></details
 		    ></td
 		  ></tr
 		></table
-	      ></div
+	      ></details
 	    ></div
 	  ></div
 	><div class="top"
@@ -143,14 +149,14 @@
 	    >Should be visible</p
 	    ></div
 	  ><div class="subs instances"
-	  ><p id="control.i:VisibleData" class="caption collapser" onclick="toggleSection('i:VisibleData')"
-	    >Instances</p
-	    ><div id="section.i:VisibleData" class="show"
-	    ><table
+	  ><details id="i:VisibleData" open="open"
+	    ><summary
+	      >Instances</summary
+	      ><table
 	      ><tr
 		><td class="src clearfix"
 		  ><span class="inst-left"
-		    ><span id="control.i:id:VisibleData:Num:1" class="instance expander" onclick="toggleSection('i:id:VisibleData:Num:1')"
+		    ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:VisibleData:Num:1"
 		      ></span
 		      > <a href="#"
 		      >Num</a
@@ -167,8 +173,10 @@
 		  ></tr
 		><tr
 		><td colspan="2"
-		  ><div id="section.i:id:VisibleData:Num:1" class="inst-details hide"
-		    ><div class="subs methods"
+		  ><details id="i:id:VisibleData:Num:1"
+		    ><summary class="hide-when-js-enabled"
+		      >Instance details</summary
+		      ><div class="subs methods"
 		      ><p class="caption"
 			>Methods</p
 			><p class="src"
@@ -248,13 +256,13 @@
 			  >#</a
 			  ></p
 			></div
-		      ></div
+		      ></details
 		    ></td
 		  ></tr
 		><tr
 		><td class="src clearfix"
 		  ><span class="inst-left"
-		    ><span id="control.i:id:VisibleData:VisibleClass:2" class="instance expander" onclick="toggleSection('i:id:VisibleData:VisibleClass:2')"
+		    ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:VisibleData:VisibleClass:2"
 		      ></span
 		      > <a href="#"
 		      >VisibleClass</a
@@ -271,12 +279,14 @@
 		  ></tr
 		><tr
 		><td colspan="2"
-		  ><div id="section.i:id:VisibleData:VisibleClass:2" class="inst-details hide"
-		    ></div
+		  ><details id="i:id:VisibleData:VisibleClass:2"
+		    ><summary class="hide-when-js-enabled"
+		      >Instance details</summary
+		      ></details
 		    ></td
 		  ></tr
 		></table
-	      ></div
+	      ></details
 	    ></div
 	  ></div
 	></div