Crate host_product_view 

ProductView delegate trait and supporting types for Polkadot product host embedding.

This crate defines the contract between the host-api message processor and the platform-specific host layer (iOS, Android, desktop, WASM). It is intentionally free of host-api internals so it can be implemented across all target platforms without pulling in SCALE codecs or smoldot.

Usage

1. Implement ProductViewDelegate for your platform’s view controller.
2. After calling HostApi::handle_message, map the HostApiOutcome fields to the corresponding delegate method.
3. Use ProductLoadState to drive loading UI and ProductAssets to serve the verified bundle into the WebView.

Re-exports

pub use delegate::ChainRpcRequest;

pub use delegate::ProductViewDelegate;

pub use error::ProductError;

pub use grant_store::InMemorySandboxGrantStore;

pub use grant_store::SandboxGrantStore;

pub use grant_store::SandboxGrantStoreError;

pub use manifest::ConsentChainTarget;

pub use manifest::ConsentSandboxRequest;

pub use manifest::HostChainRequirements;

pub use manifest::HostChainTarget;

pub use manifest::HostManifest;

pub use manifest::HostSandboxRequest;

pub use manifest::HostSandboxRequirements;

pub use manifest::ManifestError;

pub use manifest::PreparedProductBundle;

pub use manifest::PresentationConsentSummary;

pub use manifest::ProductBundleError;

pub use manifest::ProductConsentSummary;

pub use manifest::ProductManifest;

pub use manifest::ProductMetadata;

pub use manifest::ProductModality;

pub use manifest::ProductSource;

pub use manifest::PublisherMetadata;

pub use manifest::SandboxRequestKind;

pub use manifest::VerifiedConsentSummary;

pub use permissions::EffectiveSandboxPermissions;

pub use permissions::GrantedSandboxRequest;

pub use permissions::SandboxGrant;

pub use permissions::SandboxPermissionResolution;

pub use preflight::ConsentDenyBehavior;

pub use preflight::ProductConsentDecision;

pub use preflight::ProductPreflightContext;

pub use preflight::ProductPreflightDenyReason;

pub use preflight::ProductPreflightError;

pub use preflight::ProductPreflightOutcome;

pub use preflight::ProductPreflightPrompt;

pub use security::csp_for_scheme;

pub use security::inject_into_head;

pub use serving::serve_asset;

pub use state::ProductAssets;

pub use state::ProductLoadState;

Modules

delegate

The ProductViewDelegate trait.

error

Error types for host-product-view.

grant_store

manifest

mime

MIME type detection and asset path validation for serving product bundles.

permissions

preflight

security

Security constants and scripts for sandboxing product WebViews.

serving

Asset serving helpers for custom URI scheme handlers.

state

Product loading state and asset types.