// // Copyright (c) 2008, Brian Frank and Andy Frank // Licensed under the Academic Free License version 3.0 // // History: // 19 Jun 08 Brian Frank Creation // using gfx ** ** Pane is a container widget responsible for the layout ** of its children. Custom panes should: ** 1. Override prefSize to compute their preferred size ** 2. Override onLayout to set the bounds of all their children ** ** See [pod doc]`pod-doc#panes` for details. ** @Js abstract class Pane : Widget { ** ** Compute the preferred size of this widget. The hints indicate ** constraints the widget should consider in its calculations. ** If no constraints are known for width, then 'hints.w' will be ** null. If no constraints are known for height, then 'hints.h' ** will be null. ** override abstract Size prefSize(Hints hints := Hints.defVal) ** ** Handle the layout event by setting the bounds on all children. ** abstract Void onLayout() // to force native peer private native Void dummyPane() }