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// 7 july 2014
package ui
// Window represents a top-level window on screen that contains other Controls.
// Windows in package ui can only contain one control; the Stack and Grid layout Controls allow you to pack multiple Controls in a Window.
// Note that a Window is not itself a Control.
type Window interface {
// SetControl sets the Window's child Control.
SetControl(c Control)
// Title and SetTitle get and set the Window's title, respectively.
Title() string
SetTitle(title string)
// Show and Hide bring the Window on-screen and off-screen, respectively.
Show()
Hide()
// Close closes the Window.
// Any Controls within the Window are destroyed, and the Window itself is also destroyed.
// Attempting to use a Window after it has been closed results in undefined behavior.
// Close unconditionally closes the Window; it neither raises OnClosing nor checks for a return from OnClosing.
Close()
// OnClosing registers an event handler that is triggered when the user clicks the Window's close button.
// On systems where whole applications own windows, OnClosing is also triggered when the user asks to close the application.
// If this handler returns true, the Window is closed as defined by Close above.
// If this handler returns false, the Window is not closed.
OnClosing(func() bool)
}
// NewWindow creates a new Window with the given title text and size.
func NewWindow(title string, width int, height int) Window {
return newWindow(title, width, height)
}
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