单元格的有效 GWT DOM/消耗事件的列表是什么？

发布于 2024-10-20 07:42:41 字数 1487 浏览 2 评论 0原文

我已经多次遇到过这个问题，但找不到任何全面的内容。我想知道 GWT 所有有效的可消耗 DOM 事件的完整列表。

NativeEvent 的 GWT 文档说：

public final java.lang.String getType()
Gets the enumerated type of this event.
Returns:
the event's enumerated type

此枚举在哪里？它真的存在吗？实际使用的代码（我发现）明确表示这些事件总是使用字符串：“click”、“contextmenu”、“mouseup”、“dblclick”等（等等涵盖了很多模糊之处......）

我'我正在尝试对 CellTable 中的单元格实现双击和右键单击这篇文章。我正在传递 super("click", "contextmenu", "mouseup", "dblclick");在我的 AbstractCell 扩展的构造函数中。然后我重写了 onBrowserEvent:

@Override

    public void onBrowserEvent(Context context, Element parent, ImageProperties<T> value,
            NativeEvent event, ValueUpdater<ImageProperties<T>> valueUpdater) {
        if (event.getButton() == NativeEvent.BUTTON_RIGHT) {
            event.stopPropagation();
            event.preventDefault();
            eventBus.fireEvent(new RightClickEvent<Context>(context, event));
        } else {
            super.onBrowserEvent(context, parent, value, event, valueUpdater);
        }
    }

但是，我遇到了两个问题。第一，默认的 contextMenu 仍然会显示（在我的自定义菜单之上）——更不用说它甚至不使用 DOM 事件类型。另一个问题，如何检查它是否是双击事件？我发现很难相信它实际上是一组任意的字符串......

提前致谢！约翰

原文

I've run into this multiple times, and can't find anything comprehensive. I want to know the complete list of all valid consumable DOM events for GWT.

The GWT docs for NativeEvent says:

public final java.lang.String getType()
Gets the enumerated type of this event.
Returns:
the event's enumerated type

Where is this enumeration? Does it actually exist? The actual code used (that I've found) that explicitly says these events always uses strings: "click", "contextmenu", "mouseup", "dblclick", etc. (etc covers so many vaguaries ...)

I'm trying to implement both Double Click and Right Click for cells in a CellTable ala this post. I'm passing super("click", "contextmenu", "mouseup", "dblclick"); in the constructor of my extension of AbstractCell. Then I overrode onBrowserEvent:

@Override

    public void onBrowserEvent(Context context, Element parent, ImageProperties<T> value,
            NativeEvent event, ValueUpdater<ImageProperties<T>> valueUpdater) {
        if (event.getButton() == NativeEvent.BUTTON_RIGHT) {
            event.stopPropagation();
            event.preventDefault();
            eventBus.fireEvent(new RightClickEvent<Context>(context, event));
        } else {
            super.onBrowserEvent(context, parent, value, event, valueUpdater);
        }
    }

However, I run into two issues. One, the default contextMenu still gets shown (over my custom one) - not to mention it doesn't even use the DOM event type. A different problem, how do I check if its a double click event? I find it hard to believe that it's literally an arbitrary set of strings ...

Thanks in advance!
John

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