MultiSplitPane.java

MultiSplitPane.java

import javax.swing.*;
import java.awt.*;
import java.util.ArrayList;

public class MultiSplitPane extends JPanel {
    private int orientation;
    private Boolean needSplit;
    private Boolean splited;
    private Component firstChild;
    private MultiSplitPane private_second_child;
    private ArrayList<Component> components;

    public MultiSplitPane(int newOrientation) {
        this.orientation = newOrientation;
        this.needSplit = false;
        this.splited = false;
        this.components = new ArrayList<Component>();
    }


    public Component addComp(Component comp) {
        this.components.add(comp);

        if(this.splited) {
            private_second_child.addComp(comp);
        } else if(this.needSplit) {
            //Remove first child.
            this.remove(this.firstChild);
            //Setup SplitPane
            this.setLayout(new BorderLayout());
            JSplitPane splitPane = new JSplitPane(this.orientation);
            this.add(splitPane,BorderLayout.CENTER);
            splitPane.setLeftComponent(this.firstChild);
            this.private_second_child = new MultiSplitPane(this.orientation);
            this.private_second_child.addComp(comp);
            splitPane.setRightComponent(this.private_second_child);
            this.splited = true;
        } else {
            //First child
            this.firstChild = comp;
            this.setLayout(new BorderLayout());
            this.add(comp,BorderLayout.CENTER);
            //Set flag.
            this.needSplit = true;
        }
        //Validate to redisplay components.
        this.validate();
        return comp;
    }

    public ArrayList<Component> getComps() {
        return this.components;
    }
}