Java styledtext的SWT问题
我正在使用SWT创建应用程序的菜单 在类“B”中,方法createContents()负责创建表单的内容:Java styledtext的SWT问题,java,swt,styledtext,Java,Swt,Styledtext,我正在使用SWT创建应用程序的菜单 在类“B”中,方法createContents()负责创建表单的内容: protected void createContents() { shell = new Shell(); shell.setSize(500, 315); shell.setText("SWT Application"); Label lblNewLabel = new Label(shell, SWT.NONE); lblNewLabel.s
protected void createContents() {
shell = new Shell();
shell.setSize(500, 315);
shell.setText("SWT Application");
Label lblNewLabel = new Label(shell, SWT.NONE);
lblNewLabel.setFont(SWTResourceManager.getFont("Segoe UI", 14, SWT.NORMAL));
lblNewLabel.setBounds(188, 0, 108, 25);
Button btnLogs = new Button(shell, SWT.NONE);
btnLogs.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
Window3 window = new Window3();
window.open();
}
});
btnLogs.setBounds(386, 242, 75, 25);
StyledText styledText = new StyledText(shell, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI);
styledText.setBounds(10, 64, 357, 203);
Label lblRealTimeLogs = new Label(shell, SWT.NONE);
lblRealTimeLogs.setBounds(10, 35, 108, 15);
Button btnFilters = new Button(shell, SWT.NONE);
btnFilters.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
Window2 window = new Window2();
window.open();
}
});
btnFilters.setBounds(386, 204, 75, 25);
btnFilters.setText("FILTRES");
Label lblConfiguration = new Label(shell, SWT.NONE);
lblConfiguration.setFont(SWTResourceManager.getFont("Segoe UI", 9, SWT.BOLD));
lblConfiguration.setText("Configuraci\u00F3");
lblConfiguration.setBounds(386, 128, 88, 15);
Button btnNewButton = new Button(shell, SWT.NONE);
btnNewButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
Window4 window = new Window4();
window.open();
}
});
btnNewButton.setBounds(386, 165, 75, 25);
}
然后我执行应用程序,并显示类“B”中的表单。
问题是我需要从另一个类向styledtext添加新的文本行。
我需要做的是,在类“A”中,它检查文件的内容,如果内容已更改,它会将新行添加到在方法createContents()内的类“B”中创建的styledtext中。。。这似乎很容易,但我无法从类“A”引用在类“B”中创建的styledtext来添加这些新行
对不起,如果不是很清楚,我的英语不是很好
任何帮助都将不胜感激。
谢谢。好的,我已经把一个简单的例子放在一起,告诉你怎么做。它基本上创建了两个类,
A
和B
,其中A
包含一个从B
修改的Text
:
public static void main(final String[] args)
{
Display display = new Display();
Shell shell = new Shell(display);
shell.setText("StackOverflow");
shell.setLayout(new GridLayout(1, false));
/* Create your gui class */
A.getInstance(shell);
shell.pack();
shell.open();
/* Wait one second, then simulate generation of other class that calls gui class */
Display.getDefault().timerExec(1000, new Runnable()
{
@Override
public void run()
{
new B();
}
});
while (!shell.isDisposed())
{
if (!display.readAndDispatch())
{
display.sleep();
}
}
display.dispose();
}
private static class A
{
private static A INSTANCE;
/* This is the field of A we want to modify */
private Text text;
public static A getInstance(Shell shell)
{
if (INSTANCE == null && shell != null)
INSTANCE = new A(shell);
return INSTANCE;
}
private A(Shell shell)
{
text = new Text(shell, SWT.BORDER);
}
/* This is the method that allows editing the field of A from the outside */
public void setText(String text)
{
if (this.text != null)
this.text.setText(text);
}
}
private static class B
{
public B()
{
/* Set the text within A */
A.getInstance(null).setText("Hello");
}
}
或者,您可以将
文本
静态
设置为忘记实例内容。在类B中创建一个公共
方法(静态
),该方法接受字符串
,并将其附加到样式文本
。从A调用该方法。对不起,我是Java新手,但是,如果styledtext是在另一个方法中创建的,我如何调用它呢?根据我的理解,如果这是用createContents方法创建的,我可以调用样式化文本。。。还是不?