找不到与谷歌搜索上这样的东西。
有谁知道如何一些文本复制到剪贴板通过GWT Java代码复制？ 我想，以避免原料的JavaScript注射液。
任何帮助或指针赞赏。
Answer 1:
眼下它似乎并不像有提供此功能的任何GWT库。 在任何情况下，这是不可能的，因为需要有Flash支持这个在所有浏览器。 一个相当不错的库比包装的功能是ZeroClipboard 。
Answer 2:
我已经使用ZeroClipboard与GWT（亚历山大的建议），但它并不简单。
见http://blog.dandoy.org/2011/09/using-zeroclipboard-with-gwt.html
Answer 3:
下面的代码工作得很好，我在chrome：
public static native void copyToClipboard() /*-{
var selection = $wnd.getSelection();
var text = $doc.getElementById("myElement");
var range = $doc.createRange();
range.selectNodeContents(text);
selection.removeAllRanges();
selection.addRange(range);
$doc.execCommand('copy');
selection.removeAllRanges();
}-*/;
Answer 4:
GWT本身不支持$doc.execCommand('copy'); 命令，但它的超级容易。
首先将重点项目，选择文本，然后复制它。
myTextBox.setFocus(true);
myTextBox.selectAll();
boolean success = copyToClipboard();
private static native boolean copyToClipboard() /*-{
return $doc.execCommand('copy');
}-*/;
Answer 5:
这里没有原生JS的解决方案，但GWT元素替代，仍然@SushmithaShenoy启发，这里离开这个以供将来参考。
前提：
import elemental.client.Browser;
import elemental.html.Selection;
import elemental.ranges.Range;
Label.getElement().setAttribute("id","your_element_id"); //unique ID!
现在“真正的”代码，也许放在函数clickhandler：
final Selection selection = Browser.getWindow().getSelection();
final Range range = Browser.getDocument().createRange();
range.selectNodeContents(Browser.getDocument().getElementById(""you_elements_id"));
selection.removeAllRanges();
selection.addRange(range);
Browser.getWindow().getDocument().execCommand("copy", false, "");
selection.removeAllRanges();
Answer 6:
只是包装所提供的答案https://stackoverflow.com/a/30810322/106261 。
所以，你在任何文本到一个javascript本地函数/法通，JS函数创建一个新的元素，并复制到剪贴板，并复印后删除元素。
无需使用新的浏览器的任何库。
所以：
public static native void copyTextToClipboard(String text) /*-{
var textArea = document.createElement("textarea");
//
// *** This styling is an extra step which is likely not required. ***
//
// Why is it here? To ensure:
// 1. the element is able to have focus and selection.
// 2. if element was to flash render it has minimal visual impact.
// 3. less flakyness with selection and copying which **might** occur if
// the textarea element is not visible.
//
// The likelihood is the element won't even render, not even a flash,
// so some of these are just precautions. However in IE the element
// is visible whilst the popup box asking the user for permission for
// the web page to copy to the clipboard.
//
// Place in top-left corner of screen regardless of scroll position.
textArea.style.position = 'fixed';
textArea.style.top = 0;
textArea.style.left = 0;
// Ensure it has a small width and height. Setting to 1px / 1em
// doesn't work as this gives a negative w/h on some browsers.
textArea.style.width = '2em';
textArea.style.height = '2em';
// We don't need padding, reducing the size if it does flash render.
textArea.style.padding = 0;
// Clean up any borders.
textArea.style.border = 'none';
textArea.style.outline = 'none';
textArea.style.boxShadow = 'none';
// Avoid flash of white box if rendered for any reason.
textArea.style.background = 'transparent';
textArea.value = text;
document.body.appendChild(textArea);
textArea.select();
try {
var successful = document.execCommand('copy');
} catch (err) {
console.log('Unable to copy');
}
document.body.removeChild(textArea);
}-*/;
文章来源: How to copy to clipboard with GWT?
