buildSectionPlan: Reads homeSection0-6 settings, returns ordered array of sections to display

cleanupLatestMediaTasks: Stop and unobserve any in-flight latest media tasks

createSkeletonRow: Creates a single empty HomeRow with correct title, sectionId, and cursorSize. Adds a single placeholder child node so the RowList renders the row.

createSkeletonRows: Creates empty HomeRow nodes for all planned sections except latestmedia. Each skeleton row gets a single placeholder child so the RowList renders the row label and a loading indicator at the correct slot size.

findInsertIndexForSection: Determines the correct content index for a section that needs to be inserted. Uses the section plan ordering to maintain row order.

findLatestMediaInsertIndex: Determines the correct content index for latestmedia rows based on the section plan ordering.

findRowBySectionId: Find a row in content by its sectionId field

Gets an item from content at specified row and item indices Performs all necessary bounds checking and validation

getRowConfigForSection: Returns title and slotSize for a sectionId. Used when inserting a row that was previously removed (no skeleton exists).

getSectionIdForType: Maps a section type string to its sectionId

insertLatestMediaSkeletons: Creates skeleton rows for each non-excluded library and inserts them at the correct position in the content node.

loadLibraries: Entry point called by Home.bs via callFunc. Builds ordered section plan, creates skeleton rows, then fires data tasks.

onDestroy: Full teardown releasing all resources before component removal Called by Home.bs onDestroy() before nulling the homeRows reference

Observer for rowItemFocused field - delegates to updateBackdropForFocusedItem

onLibrariesLoaded: Handler when LoadLibrariesTask returns data. Populates the library row, creates latestmedia skeleton rows, then fires latest tasks.

Fires when JRRowList's progress tick detects at least one expired Program or Recording. Re-runs LoadOnNowTask and/or LoadActiveRecordingsTask to pull fresh data. Loading guards debounce repeated expiry signals while a load is already in flight, and section plan checks avoid wasted requests when the user has disabled the relevant sections.

onSectionPopulated: Called after each section is populated with data. Signals AppLaunchComplete after 2 sections have loaded.

populateLibraryRow: Fills the library row with filtered library items. Uses populateRowFromData for consistent in-place update behavior.

populateRowFromData: Unified row population logic used by all update callbacks. Updates the children of the existing row node in place to avoid RowList re-layout and focus disruption. Removes the row if data is empty. If the row doesn't exist but data is available (e.g., a previously empty section now has content on refresh), creates and inserts the row at the correct position.

removeRowAtIndex: Removes a row at the given index and recalculates sizes

setRowItemSize: Loops through all home sections and sets the correct item sizes, heights, and spacings per row. rowItemSize[i] = slot size [width, posterHeight] — determines focus ring dimensions (poster only, no text). rowHeights[i] = total row height: slot + 90px text area for standard rows; slot-only for library tiles. rowSpacings[i] = gap after each row before the next row label. Must be set for ALL rows because Roku ignores itemSpacing entirely once rowSpacings is assigned (even partially). Standard rows use 60px; My Media uses 78px to partially compensate for its absent text area.

startLatestMediaLoads: Fires LoadItemsTask for each latestmedia library

startParallelLoads: Fires off data tasks for sections that don't need library data. Library-dependent sections (library row, latestmedia) are handled in onLibrariesLoaded.

Update backdrop to match currently focused item Handles all validation and edge cases Used by: onItemFocused observer and row update functions after replaceChild

updateHomeRows: Refresh data for all rows without tearing down the UI. Keeps existing row nodes in place to avoid focus disruption. As fresh data arrives, populateRowFromData updates row children in place.

updateLatestItems: Processes LoadItemsTask content for a latest-in-library row. Uses msg parameter because each library has its own dynamically created task.