Intellij IDEA 插件开发：无法获取 IntentionAction 的进度指示器

Question

我想在我的自定义 IntellIJ IDEA 插件中运行自定义 IntentionAction 时显示进度条。

可是怎么弄都不显示。为了测试问题是否出在IntentionAction，我将代码复制粘贴到一个AnAction的简单实现中。整个 class 看起来像这样：

    public class HelloAction extends AnAction {
    public HelloAction() {
        super("Hello");
    }

    public void actionPerformed(AnActionEvent event) {
        Project project = event.getData(CommonDataKeys.PROJECT);
        ProgressManager.getInstance().run(new Task.Modal(project, "daf", false) {
            public void run(ProgressIndicator indicator) {
                indicator.setText("This is how you update the indicator");
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {}
                indicator.setFraction(0.5);  // halfway done
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {}
            }
        });
        Messages.showMessageDialog(project, "Hello world!", "Greeting", Messages.getInformationIcon());
    }
}

而且效果很好。当我在 IntentionAction 中使用相同的代码时，什么也没有显示。

public class GenerateIntentionAction extends PsiElementBaseIntentionAction implements IntentionAction {
...
public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element) throws IncorrectOperationException {
        ProgressManager.getInstance().run(new Task.Modal(project, "daf", false) {
            public void run(ProgressIndicator indicator) {
                indicator.setText("This is how you update the indicator");
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {}
                indicator.setFraction(0.5);  // halfway done
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {}
            }
        });

我尝试运行调用 runWithProgressSynchronously 而不是 run，尝试调用 Task Modal 和 Backgroundable - 但无济于事。除了 IntentionAction 中的 ProgressIndicator 始终是 EmptyProgressIndicator

之外，我不知道有什么问题

Answer 1

如果您的意图操作是在 WriteAction 内部调用的，您将无法从那里显示模态 UI。覆盖 startInWriteAction 并返回 false 可能会有所帮助。

Intellij IDEA 插件开发：无法获取 IntentionAction 的进度指示器

Intellij IDEA plugin development: Cannot get progress indicator for IntentionAction

java

user-interface

intellij-idea

intellij-plugin