1. Data Architecture DataView holds ref count on cache entry
HTML Template
Data Architecture
View
View
Controls
View Model (proxy)
View Model (proxy)
View Model
Proxy kept in sync via PostMessage
HTML and CSS is sanitized to remove untrusted JavaScript
Shell IFrame
Extension IFrame
View Model
Model Data
View Model
DataView
DataView
DataContext
DataView holds ref count on cache entry
Add IFrame isolation (to isolate extension JavaScript execution)
Standard MVVM pattern
View models load data using a DataView
Model data cached in DataContext
Disposed view model decrements ref count
View composed of Controls, described by HTML template
"fetch(...)"
Unreferenced cache entries can be evicted
Other view models also hold ref counts
Ajax call to populate missing cache entry
DataContext contains multiple DataCaches
DataCache
DataCache
DataCache
Model Data
Result placed in the cache entry (in a DataSet)
DataSet
Cache entries are DataSets
Base.Net.ajax(…)
DataSet
Service