Crate kas_view

View widgets and shared data

View widgets allow data-oriented design. This is vaguely similar to the Model-View-Controller pattern or Elm’s Model-View-Update design, but with no direct link between Model and Controller:

1. Model traits describe data models: ListData, MatrixData
2. Drivers describe how to build a widget view over data and (optionally) how to handle messages from view widgets
3. Controllers are special widgets which manage views over data

Three controllers are provided by this crate:

• ListView constructs a row or column of views over indexable data
• MatrixView constructs a table/sheet of views over two-dimensional indexable data

Both ListView and MatrixView support virtual scrolling: the number of view widget instances is limited (approximately) to the number required to cover the visible area, and these are re-used to enable fast scrolling through large data sets.

Re-exports

• pub use driver::Driver;

Modules

• driver
  View drivers
• filter
  Filters over data

Structs

• ListView
  View controller for 1D indexable data (list)
• MatrixView
  View controller for 2D indexable data (matrix)

Enums

• SelectionMode
  Selection mode used by ListView
• SelectionMsg
  Used to notify selection and deselection of ListView and MatrixView children

Traits

• DataKey
  Bounds on the key type
• ListData
  Trait for viewable data lists
• MatrixData
  Trait for viewable data matrices
• SharedData
  Trait for shared data