Disallow moving up from 1st channel if schedule not fully loaded

Author: 1hitsong

components/liveTv/TVSchedule.bs

@@ -0,0 +1,18 @@
+import "pkg:/source/enums/KeyCode.bs"
+import "pkg:/source/utils/misc.bs"
+
+sub init()
+end sub
+
+function onKeyEvent(key as string, press as boolean) as boolean
+    if not press then return false
+
+    ' If we are on the 1st channel and the schedule isn't fully loaded yet, disallow moving up before index 0
+    if isStringEqual(key, KeyCode.UP)
+        if m.top.channelFocused = 0
+            if not m.top.isLoaded then return true
+        end if
+    end if
+
+    return false
+end function

components/liveTv/TVSchedule.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<component name="TVSchedule" extends="TimeGrid">
+  <interface>
+    <field id="isLoaded" type="boolean" />
+  </interface>
+</component>

components/liveTv/schedule.bs

@@ -1,4 +1,5 @@
 import "pkg:/source/enums/ColorPalette.bs"
+import "pkg:/source/enums/KeyCode.bs"
 import "pkg:/source/enums/TaskControl.bs"
 import "pkg:/source/utils/misc.bs"
 
@@ -11,6 +12,8 @@ sub init()
     m.scheduleGrid = m.top.findNode("scheduleGrid")
     m.detailsPane = m.top.findNode("detailsPane")
 
+    m.scheduleGrid.isLoaded = false
+
     m.gridData = createObject("roSGNode", "ContentNode")
     m.scheduleGrid.content = m.gridData
 
@@ -69,6 +72,7 @@ sub channelFilterSet()
         m.LoadChannelsTask.filter = m.top.filter
         m.gridData.removeChildren(m.gridData.getChildren(-1, 0))
         m.loadedChannelCount = 0
+        m.scheduleGrid.isLoaded = false
         loadChannels(m.channelFirstLoadLimit)
     end if
 
@@ -91,6 +95,7 @@ sub channelsearchTermSet()
     startLoadingSpinner()
     m.gridData.removeChildren(m.gridData.getChildren(-1, 0))
     m.loadedChannelCount = 0
+    m.scheduleGrid.isLoaded = false
     loadChannels(m.channelFirstLoadLimit)
 end sub
 
@@ -116,6 +121,7 @@ sub onChannelsLoaded()
         m.top.signalBeacon("EPGLaunchComplete") ' Required Roku Performance monitoring
         m.EPGLaunchCompleteSignaled = true
     end if
+
     m.LoadChannelsTask.channels = []
 end sub
 
@@ -159,6 +165,8 @@ sub onScheduleLoaded()
     m.loadedChannelCount += m.LoadChannelsTask.limit
     if m.LoadChannelsTask.totalRecordCount > m.loadedChannelCount
         loadChannels(m.channelLaterLoadLimit)
+    else
+        m.scheduleGrid.isLoaded = true
     end if
 end sub
 
@@ -328,14 +336,16 @@ function onKeyEvent(key as string, press as boolean) as boolean
     detailsGrp = m.top.findNode("detailsPane")
     gridGrp = m.top.findNode("scheduleGrid")
 
-    if key = "back" and detailsGrp.isInFocusChain()
-        focusProgramDetails(false)
-        detailsGrp.setFocus(false)
-        gridGrp.setFocus(true)
-        group = m.global.sceneManager.callFunc("getActiveScene")
-        group.lastFocus = gridGrp
-        return true
-    else if key = "back"
+    if isStringEqual(key, KeyCode.BACK)
+        if detailsGrp.isInFocusChain()
+            focusProgramDetails(false)
+            detailsGrp.setFocus(false)
+            gridGrp.setFocus(true)
+            group = m.global.sceneManager.callFunc("getActiveScene")
+            group.lastFocus = gridGrp
+            return true
+        end if
+
         m.state = TaskControl.STOP
 
         m.LoadChannelsTask.control = TaskControl.STOP

components/liveTv/schedule.xml

@@ -6,7 +6,7 @@
     <!-- Selected Item Details -->
     <ProgramDetails id="detailsPane" focusable="true" />
 
-    <TimeGrid
+    <TVSchedule
       id="scheduleGrid"
       channelInfoComponentName="ChannelInfo"
       translation="[0,600]"