Update code docs

Author: jellyrock-bot

docs/components_music_ArtistView.bs.html

@@ -27,11 +27,6 @@
   m.sectionScroller.observeField("displayedIndex", "onSectionScrollerChange")
   m.overhang = m.top.getScene().findNode("overhang")
 
-  ' Load background image
-  m.LoadBackdropImageTask = CreateObject("roSGNode", "LoadItemsTask")
-  m.LoadBackdropImageTask.itemsToLoad = "backdropImage"
-
-  m.backDrop = m.top.findNode("backdrop")
   m.artistImage = m.top.findNode("artistImage")
   m.dscr = m.top.findNode("overview")
   m.dscr.ellipsisText = tr("... (Press * to read more)")
@@ -59,6 +54,11 @@
 end sub
 
 sub OnScreenShown()
+  ' Restore backdrop when returning to this screen
+  if isValid(m.top.pageContent) and isValid(m.top.pageContent.backdropUrl)
+    m.global.sceneManager.callFunc("setBackgroundImage", m.top.pageContent.backdropUrl)
+  end if
+
   if m.sectionScroller.displayedIndex = 0
     ' User is on the top section with artist info and buttons
     m.buttonGrp.callFunc("focus")
@@ -136,10 +136,10 @@
 sub pageContentChanged()
   item = m.top.pageContent
 
-  ' Use metadata to load backdrop image
-  m.LoadBackdropImageTask.itemId = item.json.id
-  m.LoadBackdropImageTask.observeField("content", "onBackdropImageLoaded")
-  m.LoadBackdropImageTask.control = "RUN"
+  ' Set backdrop using app-wide BackdropFader via sceneManager
+  if isValid(item) and isValid(item.backdropUrl)
+    m.global.sceneManager.callFunc("setBackgroundImage", item.backdropUrl)
+  end if
 
   ' Populate scene data
   setScreenTitle(item.json)
@@ -160,24 +160,7 @@
   m.artistImage.uri = posterURL
 end sub
 
-sub onBackdropImageLoaded()
-  data = m.LoadBackdropImageTask.content[0]
-  m.LoadBackdropImageTask.unobserveField("content")
-  if isValid(data) and data <> ""
-    setBackdropImage(data)
-  end if
-end sub
-
-' Add backdrop image to screen
-sub setBackdropImage(data)
-  if isValid(data)
-    if m.backDrop.uri <> data
-      m.backDrop.uri = data
-    end if
-  end if
-end sub
-
-' Event fired when page data is loaded
+' Event fired when artist overview data is loaded
 sub artistOverviewChanged()
   overviewContent = m.top.artistOverview