如何根据摇摆中的JPanel(表)行数增加JFrame大小

2022-01-24 00:00:00 window java swing jpanel jframe

我有以下摆动应用程序:

I have swing application which does following:

public void init() {
    jFrame = new JFrame();
...
    jFrame.add(sortingDataInputComponent.asComponent()); 
...
    jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    jFrame.pack();
    jFrame.setVisible(true);
    jFrame.toFront();
}

那里的sortingDataInputComponent是JPanel

there sortingDataInputComponent is JPanel with 

jPanel.setLayout(new BoxLayout(jPanel, BoxLayout.Y_AXIS));

里面有另一个JPanel

inside of which there is another JPanel with

jPanel.setLayout(new GridLayout(0,numberOfColumns));

在哪里

private final int numberOfColumns = 3;

并且内部 jpanel 在按钮按下时增长:

and inner jpanel grows at button press:

    jPanel.add(rowElement.getLabel(), insertionIndex);      
    jPanel.add(rowElement.getField(), insertionIndex + 1);
    jPanel.add(rowElement.getDeleteButton(), insertionIndex + 2);

    rowElements.add(rowElement);

    jPanel.revalidate();
    jPanel.repaint();

但主窗口不会随着 JPanel 一起增长.它具有相同的初始大小.如何让JFrame随着内部JPanels的增长而增长?

but the main windows does not grow with JPanel. It has the same initial size. How to make JFrame grow with the growth of inner JPanels?

推荐答案

实现 Scrollable 接口在您添加行并覆盖 getPreferredScrollableViewportSize() 如图这里 用于 JTable 和 这里 用于 JList.在封闭的 Window 上调用 pack() 将导致它调整大小以适合其子组件的首选大小和布局."

Implement the Scrollable interface in the component to which you add rows and override getPreferredScrollableViewportSize() as shown here for JTable and here for JList. Invoking pack() on the enclosing Window will cause it to be "sized to fit the preferred size and layouts of its subcomponents."

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