vaadin7 - Vaadin 7.1：子窗口的父级

Question

我正在使用 Vaadin 7.1

我有 2 个布局：

---

| 标题 |

| 主要 |

和弹出窗口。

当我最大化窗口时，我希望它在“主”中打开，而不是在整个屏幕中打开。可能吗？

当我尝试直接执行此操作时，我得到：

java.lang.IllegalArgumentException：只能使用 UI.addWindow(Window window) 将窗口添加到 UI

问候，Oleksandr。

Answer 1

我认为您需要一些 javascript 和自定义逻辑。
首先，您必须设置主布局 id：

mainLayout.setId("xyz");

这是扩展窗口：

public class MyWindow extends Window {

    private static final long serialVersionUID = 1L;

    private int top;
    private int left;
    private int bottom;
    private int right;

    public MyWindow() {
        setResizable(false);
        setData(WindowMode.NORMAL);
        String sourceURL = "javascript:com.xyz.foo.myfunc(" +
                "document.getElementById('xyz').getBoundingClientRect().top," +
                "document.getElementById('xyz').getBoundingClientRect().left," +
                "document.getElementById('xyz').getBoundingClientRect().bottom," +
                "document.getElementById('xyz').getBoundingClientRect().right)";
        final Link link = new Link("maximization", new ExternalResource(sourceURL));
        // set link icon if needed
        JavaScript.getCurrent().addFunction("com.xyz.foo.myfunc", new JavaScriptFunction() {
            private static final long serialVersionUID = 1L;

            @Override
            public void call(JSONArray arg) throws JSONException {
                if (MyWindow.this.getData() == WindowMode.NORMAL) {
                    saveCurrentPos();
                    setPos(arg.getInt(0), arg.getInt(1), arg.getInt(2), arg.getInt(3));
                    link.setCaption("normalization"); // or set icon
                    MyWindow.this.setData(WindowMode.MAXIMIZED);
                } else {
                    setPos(top, left, bottom, right);
                    link.setCaption("maximization"); // or set icon
                    MyWindow.this.setData(WindowMode.NORMAL);
                }
            }
        });
        VerticalLayout vLayout = new VerticalLayout(link);
        vLayout.setComponentAlignment(link, Alignment.TOP_RIGHT);
        setContent(vLayout);

        // demo settings
        setWidth("200px");
        setHeight("150px");
        center();
    }

    private void saveCurrentPos() {
        left = getPositionX();
        top = getPositionY();
        right = left + (int) getWidth();
        bottom = top + (int) getHeight();
    }

    private void setPos(int top, int left, int bottom, int right) {
        setPositionX(left);
        setPositionY(top);
        setWidth(right - left, Unit.PIXELS);
        setHeight(bottom - top, Unit.PIXELS);
    }

}

我建议您使用标题和关闭按钮编写自己的标题。