Ownable Webview

[jasny]

Each ownable is loaded and displayed through a webview. Within the webview, we should be able to accomplish the same logic as we do in the Ownables SDK.

In the SDK wallet, we create an iframe for each Ownable. The iframe loads ownable.js, which creates a sandboxed worker for the smart contract and iframe for the widget.

The Ownable Webview should load a similar javascript file. Instead of using HTTP Messaging, we need an alternative way of communication between the webview and the native app. The communication is 2-way.

• CosmWasm Messages are pushed to the webview. These are processed by the smart contract and have a response. This response potentially includes an updated state, which needs to be stored by the native app.
• Actions within the widget need to bubble up to the native application. There is no response to the widget.

[jasny]

How do we load a static JavaScript file in a Webview?

Does Webview support the Web Workers API? If not we need an alternative method to load CosmWasm contract in a sandboxed environment.