41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
package tui
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// View defines the behavior of any element displayable on screen.
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// To define custom Views, it is recommended to add ViewTmpl
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// as the promoted anonymous field for your custom View struct.
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// It implements the View interface with useful default behavior
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type View interface {
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Events
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SetStyle(s Style)
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Style() Style
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// Layout is usually called by the parent view to ask the view's preferred size.
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// If the parent view does not care about its preferred size, it might not be called at all.
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// Negative values indicate as much space as possible.
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Layout() (prefWidth, prefHeight int)
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// Draw is called for each view when it should print itself onto the screen.
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// The parent view has full control of the ViewBuffer size
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// and may or may not use the values returned from Layout() to set the size.
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Draw(buf *ViewBuffer)
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}
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// Group defines the behavior of a View which can hold multiple sub views
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type Group interface {
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View
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Views() []View
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}
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// Wrapper defines the behavior of a GroupView which can hold exactly one sub view.
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// To define custom Wrappers, it is recommended to add WrapperTmpl
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// as the promoted anonymous field for your custom Wrapper struct.
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// It implements the Wrapper interface with useful default behavior
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type Wrapper interface {
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Group
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SetView(View)
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View() View
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}
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