Method get_children_views

atomic-core/src/pristine/traits/view.rs:353–366

Find all views that have the given view as their parent. Used during view deletion to check for child views that would be orphaned. A view with children cannot be deleted without first reparenting or deleting its children.

(&self, parent_id: u64)

    /// orphaned. A view with children cannot be deleted without first
    /// reparenting or deleting its children.
    fn get_children_views(&self, parent_id: u64) -> Result<Vec<ViewState>, PristineError> {
        // Default implementation: scan all views and filter by parent.
        // View counts are typically small (<100), so this is fine.
        let names = self.list_views()?;
        let mut children = Vec::new();
        for name in names {
            if let Some(view) = self.get_view(&name)? {
                if view.parent == Some(parent_id) {
                    children.push(view);
                }
            }
        }
        Ok(children)
    }

    /// Get a view by name.
    fn get_view(&self, name: &str) -> Result<Option<ViewState>, PristineError>;