Question

我只想在Java SWT中的两个页面之间进行简单的链接，就像这个HTML代码一样。

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>

你能给我一些在Java SWT中做同样事情的最好方法吗？

请注意，我不想链接到HTML页面。我想在两个Java SWT视图之间建立链接。

目前，我有这段代码：

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");
    }
}

Answer 1

基本上你可以做两件事：

使用TabFolder并在标签
使用StackLayout并将您的个人内容作为堆栈中的单独图层

以下是TabFolder：

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();
}

以下是StackLayout：

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();
}

<强>更新：

好的，这里有。现在，您可以在没有“主按钮”的情况下切换“页面”：

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 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();
}

Answer 2

App.java：

public class App {

    static Composite parent;
    static StackLayout stackLayout;

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

        parent = new Composite(shell, SWT.NONE);
        stackLayout = new StackLayout();
        parent.setLayout(stackLayout);

        //----------Page 1----------
        final Page1 page1 = new Page1(parent, SWT.NONE);
        page1.setLayout(new GridLayout());

        //----------Page 2----------
        final Page2 page2 = new Page2(parent, SWT.NONE);
        page2.setLayout(new GridLayout());

        //----------Vector----------
        final Vector<Composite> pageVector = new Vector<Composite>();
        pageVector.add(0, page1);
        pageVector.add(1, page2);

        //----------addLink----------
        page1.addLink(pageVector);
        page2.addLink(pageVector);

        //----------topControl----------
        stackLayout.topControl = page1;

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

Page1.java：

public class Page1 extends Composite {

    Button btnPage2;

    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");

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

    public void addLink(final Vector<Composite> pageVector) {
        btnPage2.addListener(SWT.Selection, new Listener() {
            @Override
            public void handleEvent(Event e) {
                App.stackLayout.topControl = pageVector.get(1);
                App.parent.layout();
            }
        });
    }
}

Page2.java：

public class Page2 extends Composite {

    Button btnPage1;

    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");

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

    public void addLink(final Vector<Composite> pageVector) {
        btnPage1.addListener(SWT.Selection, new Listener() {
            @Override
            public void handleEvent(Event e) {
                App.stackLayout.topControl = pageVector.get(0);
                App.parent.layout();
            }
        });
    }
}

页面链接：使用HTML轻松但不适用于Java SWT

2 个答案: