dandelion/app/src/main/java/de/baumann/diaspora/FloatingActionsMenuBehavior.java

package de.baumann.diaspora;

/**
 * Created by juergen on 29.02.16.
 */
import android.content.Context;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar.SnackbarLayout;
import android.util.AttributeSet;
import android.view.View;

import com.getbase.floatingactionbutton.FloatingActionButton;
import com.getbase.floatingactionbutton.FloatingActionsMenu;

public class FloatingActionsMenuBehavior extends CoordinatorLayout.Behavior<FloatingActionsMenu> {

    public FloatingActionsMenuBehavior(Context context, AttributeSet attrs) {
    }

    @Override
    public boolean layoutDependsOn(CoordinatorLayout parent, FloatingActionsMenu child, View dependency) {
        return dependency instanceof SnackbarLayout;
    }

    @Override
    public boolean onDependentViewChanged(CoordinatorLayout parent, FloatingActionsMenu child, View dependency) {
        float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
        child.setTranslationY(translationY);
        return true;
    }
}