如何省略“取消” Java ProgressMonitor中的按钮？ [英] How to omit the "Cancel" button in Java ProgressMonitor?

问题描述

我的任务是必要的，不应取消，如何让ProgressMonitor不显示取消按钮，所以当它完成时，它会自动关闭面板。

My task is necessary and shouldn't be canceled, how do I ask ProgressMonitor not to display the "Cancel" button, so when it finishes, it will auto close the panel.

Frank

推荐答案

我想也许我可以问它
返回其中的组件并删除
按钮

I was thinking maybe I can ask it to return the components in it and delete the button

使用Swing教程中的ProgressMonitorDemo（由BalusC链接）我做了以下更改：

Using the ProgressMonitorDemo from the Swing tutorial (linked to by BalusC) I made the following changes:

public void propertyChange(PropertyChangeEvent evt) {
    if ("progress" == evt.getPropertyName() ) {
        int progress = (Integer) evt.getNewValue();
        progressMonitor.setProgress(progress);

        //  Added this

        AccessibleContext ac = progressMonitor.getAccessibleContext();
        JDialog dialog = (JDialog)ac.getAccessibleParent();
        java.util.List<JButton> components =
            SwingUtils.getDescendantsOfType(JButton.class, dialog, true);
        JButton button = components.get(0);
        button.setVisible(false);

        // end of change

        String message =
            String.format("Completed %d%%.\n", progress);
        progressMonitor.setNote(message);
        taskOutput.append(message);
        if (progressMonitor.isCanceled() || task.isDone()) {
            Toolkit.getDefaultToolkit().beep();
            if (progressMonitor.isCanceled()) {
                task.cancel(true);
                taskOutput.append("Task canceled.\n");
            } else {
                taskOutput.append("Task completed.\n");
            }
            startButton.setEnabled(true);
        }
    }
}

您需要下载 Swing Utils 课程。

代码只能执行一次，否则在对话框关闭时会得到一个NPE。我会让你整理一下:)。

The code should only be executed once, otherwise you get a NPE when the dialog closes. I'll let you tidy that up :).

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