在GWT中设置选定的文本（为了使复制粘贴更容易） [英] Set selected text in GWT (in order to make copy paste easier)

问题描述

在GWT中，显然你必须使用一些Flash组件来改变剪贴板。由于我不想使用Flash，但我想从我的应用程序中复制和粘贴文本，所以如果有人点击它，我想设置选中的文本。用户唯一需要做的就是键入Ctrl-C / Ctrl-V来复制和粘贴（在Windows中）。这可能吗？我该如何做到这一点？

更多信息：

我想要使用的应用程序是在 http://borkent-app2.appspot.com/ 。
这是我自学的希伯来语单词（我的母语是荷兰语）。希伯来语单词使用标签放置在RootPanel上。有时我想复制并粘贴希伯来词（例如，当我想在Google上搜索时），但选择它有点麻烦（可能是因为从右向左的文本方向）。所以我想通过只点击它所在的标签来选择希伯来文的文字。

解决方案

  public void onModuleLoad（）{
 final Label word = new Label（some text）; 
 word.addClickHandler（new ClickHandler（）{
 
 @Override 
 public void onClick（ClickEvent event）{
 markText（word.getElement（））; 
} 
}）; 
 word.getElement（）。setId（test）; 
 RootPanel.get（）。add（word）; 
 
 $ b私有本地void markText（Element elem）/ *  -  {
 if（$ doc.selection&& $ doc.selection.createRange）{
 var range = $ doc.selection.createRange（）; 
 range.moveToElementText（elem）; 
 range.select（）; 
} else if（$ doc.createRange&& $ wnd.getSelection）{
 var range = $ doc.createRange（）; 
 range.selectNode（elem）; 
 var selection = $ wnd.getSelection（）; 
 selection.removeAllRanges（）; 
 selection.addRange（range）; 
} 
}  -  * /; 
  

In GWT apparently you have to use some Flash-component to alter the clipboard. Since I don't want to use Flash, but I do want to copy and paste text from my application, I would like to set text selected if someone clicks on it. The only thing the user has to do is to type Ctrl-C/Ctrl-V to copy and paste (in Windows). Is this possible? How do I do this?

More info:

The app in which I would like to use this is at http://borkent-app2.appspot.com/. It is an app I made to teach myself Hebrew words (my native language is Dutch). The Hebrew word is placed on the RootPanel using a Label. Sometimes I would like to copy and paste the Hebrew word (when I want to search on it in Google for example), but selecting it is somewhat cumbersome (probably because of the right-to-left text direction). So I would like to select the text of the Hebrew word by only clicking on the Label it is in.

解决方案

Something like this?

public void onModuleLoad() {
    final Label word = new Label("some text");
    word.addClickHandler(new ClickHandler() {

        @Override
        public void onClick(ClickEvent event) {
            markText(word.getElement());
        }
    });
    word.getElement().setId("test");
    RootPanel.get().add(word);
}

private native void markText(Element elem) /*-{
    if ($doc.selection && $doc.selection.createRange) {
        var range = $doc.selection.createRange();
        range.moveToElementText(elem);
        range.select();
    } else if ($doc.createRange && $wnd.getSelection) {
        var range = $doc.createRange();
        range.selectNode(elem);
        var selection = $wnd.getSelection();
        selection.removeAllRanges();
        selection.addRange(range);
    }
}-*/;

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