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java - 页面链接: easy with HTML but not with Java SWT

转载 作者：行者123 更新时间：2023-12-01 12:48:38 26 4
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我只想在 Java SWT 中的两个页面之间建立一个简单的链接，就像这个 HTML 代码。

page1.html:

<html>
    <body>
        <p>I'm on Page 1</p>
        <a href="page2.html"><input type="button" value="Go to Page 2"></a>
    </body>
</html>

page2.html:

<html>
    <body>
        <p>I'm on Page 2</p>
        <a href="page1.html"><input type="button" value="Go to Page 1"></a>
    </body>
</html>

您能给我在 Java SWT 中执行相同操作的最佳方法吗？

请注意，我不想创建指向 HTML 页面的链接。我想在两个 Java SWT View 之间建立链接。

此时，我有这样的代码:

public static void main(String[] args) {
    Display display = Display.getDefault();
    Shell shell = new Shell();
    shell.setSize(450, 300);
    shell.setText("SWT Application");

    Composite composite = new Page1(shell, SWT.NONE);
    composite.setBounds(0, 0, 430, 260);

    shell.open();
    shell.layout();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch()) {
            display.sleep();
        }
    }
}

Page1.class:

public class Page1 extends Composite {

    public Page1(Composite parent, int style) {
        super(parent, style);

        Label lblPage1 = new Label(this, SWT.NONE);
        lblPage1.setLocation(10, 10);
        lblPage1.setSize(80, 15);
        lblPage1.setText("I'm on Page 1");

        Button btnPage2 = new Button(this, SWT.NONE);
        btnPage2.setLocation(10, 30);
        btnPage2.setSize(80, 25);
        btnPage2.setText("Go to Page 2");
    }
}

Page2.class:

public class Page2 extends Composite {

    public Page2(Composite parent, int style) {
        super(parent, style);

        Label lblPage2 = new Label(this, SWT.NONE);
        lblPage2.setLocation(10, 10);
        lblPage2.setSize(80, 15);
        lblPage2.setText("I'm on Page 2");

        Button btnPage1 = new Button(this, SWT.NONE);
        btnPage1.setLocation(10, 30);
        btnPage1.setSize(80, 25);
        btnPage1.setText("Go to Page 1");
    }
}

最佳答案

基本上您可以做两件事:

  1. 使用 TabFolder 并在选项卡中显示您的个人内容
  2. 使用 StackLayout 并将各个内容作为堆栈中的单独层

以下是 TabFolder 的示例:

public static void main(String[] args)
{
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("StackOverflow");
    shell.setLayout(new GridLayout());

    final TabFolder tabFolder = new TabFolder(shell, SWT.BORDER);

    for (int i= 0; i< 10; i++)
    {
        TabItem tabItem = new TabItem(tabFolder, SWT.NULL);
        tabItem.setText("Tab " + i);

        Text text = new Text(tabFolder, SWT.BORDER);
        text.setText("This is page " + i);
        tabItem.setControl(text);
    }

    shell.pack();
    shell.open();

    while (!shell.isDisposed())
    {
        if (!display.readAndDispatch())
        {
            display.sleep();
        }
    }
    display.dispose();
}

这是一个 StackLayout 的示例:

private static int current = 0;

public static void main(String[] args)
{
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("StackOverflow");
    shell.setLayout(new GridLayout());

    final Composite parent = new Composite(shell, SWT.NONE);
    parent.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    final StackLayout layout = new StackLayout();
    parent.setLayout(layout);

    final Button[] buttons = new Button[10];
    for (int i = 0; i < 10; i++)
    {
        buttons[i] = new Button(parent, SWT.PUSH);
        buttons[i].setText("Button " + i);
    }
    layout.topControl = buttons[0];

    Button switchButton = new Button(shell, SWT.PUSH);
    switchButton.setText("Show Next Button");
    switchButton.addListener(SWT.Selection, new Listener()
    {
        public void handleEvent(Event e)
        {
            current = (current + 1) % buttons.length;
            layout.topControl = buttons[current];
            parent.layout();
        }
    });

    shell.pack();
    shell.open();

    while (!shell.isDisposed())
    {
        if (!display.readAndDispatch())
        {
            display.sleep();
        }
    }
    display.dispose();
}
<小时/>

更新:

好的，开始了。现在您可以在没有“主按钮”的情况下切换“页面”:

私有(private)静态 int 当前 = 0;

public static void main(String[] args)
{
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("StackOverflow");
    shell.setLayout(new GridLayout());

    final Composite parent = new Composite(shell, SWT.NONE);
    parent.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    final StackLayout layout = new StackLayout();
    parent.setLayout(layout);

    final Composite[] pages = new Composite[5];

    for (int i = 0; i < pages.length; i++)
    {
        pages[i] = new Composite(parent, SWT.NONE);
        pages[i].setLayout(new GridLayout(3, true));
        pages[i].setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

        for (int j = 0; j < 9; j++)
            new Label(pages[i], SWT.NONE).setText("C" + i + " B" + j);

        Button goToNext = new Button(pages[i], SWT.PUSH);
        goToNext.setText("Go to next");
        goToNext.addListener(SWT.Selection, new Listener()
        {
            @Override
            public void handleEvent(Event arg0)
            {
                current = (current + 1) % pages.length;
                layout.topControl = pages[current];
                parent.layout();
            }
        });
    }

    layout.topControl = pages[0];

    shell.pack();
    shell.open();

    while (!shell.isDisposed())
    {
        if (!display.readAndDispatch())
        {
            display.sleep();
        }
    }
    display.dispose();
}

关于java - 页面链接: easy with HTML but not with Java SWT，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24437097/

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