BoxLayout.nimpl

module BoxLayout;

import Common;
import Widget;
import Layout;
import Enums;
import Object;

namedbits SignalMask extends Layout.SignalMask {
    // none extra
}

interface SignalHandler {
    // Object:
    void destroyed(Object.Handle obj);
    void objectNameChanged(string objectName);

    // Layout:
    // (none)

    // none of our own
}


enum Direction {
    LeftToRight,
    RightToLeft,
    TopToBottom,
    BottomToTop
}

opaque Handle extends Layout.Handle {
    void setDirection(Direction dir);

    // item adding:
    void addSpacing(int size);
    void addStretch(int stretch);
    void addWidget(Widget.Handle widget);
    void addWidget(Widget.Handle widget, int stretch);
    void addWidget(Widget.Handle widget, int stretch, Alignment align);
    void addLayout(Layout.Handle layout);
    void addLayout(Layout.Handle layout, int stretch);

    void setSignalMask(SignalMask mask);
}

Handle create(Direction dir, SignalHandler handler);
Handle createNoHandler(Direction dir);