viewer now works for files_ip, still have broken bits everywhere - files_rbp, change_opts, do I want a back button? lots of dead/old code, probably cam move more js into *_support, and do I want to keep files_support separate to view_support

internal/js/files_support.js

@@ -523,15 +523,19 @@ function drawPageOfFigures()
         ecnt++
     }
     $('.figure').click( function(e) { DoSel(e, this ); SetButtonState(); return false; });
-    $('.figure').dblclick( CallViewRouteWrapper )
+    $('.figure').dblclick( function(e) { dblClickToViewEntry( $(this).attr('id') ) } )
     // for dir, getDirEntries 2nd param is back (or "up" a dir)
     $(".dir").click( function(e) { document.back_id=this.id; getDirEntries(this.id,false) } )
     $(".back").click( function(e) { getDirEntries(this.id,true) } )
 }
 
 // Function to get the 'page' of entry ids out of entryList
-function getPage(pageNumber) 
+function getPage(pageNumber,viewing_idx=0) 
 {
+    // before we do anything, disabled left/right arrows on viewer to stop
+    // getting another event before we have the data for the page back
+    $('#la').prop('disabled', true)
+    $('#ra').prop('disabled', true)
     const startIndex = (pageNumber - 1) * OPT.howMany;
     const endIndex = startIndex + OPT.howMany;
     pageList = entryList.slice(startIndex, endIndex);
@@ -549,7 +553,13 @@ function getPage(pageNumber)
         dataType: 'json', // Expect JSON response
         success: function(res) {
             document.entries=res
+            // add all the figures to files_div
             drawPageOfFigures()
+            // noting we could have been in files_div, or viewer_div, update both jic
+            // and fix viewer_div - update viewing, arrows and image/video too
+            document.viewing=document.entries[viewing_idx]
+            resetNextPrevButtons()
+            ViewImageOrVideo()
         },
         error: function(xhr, status, error) {
             console.error("Error:", error);