I used BTAndroidWebViewSelection javascript library to do that.For Cut, Copy and Paste action I injected my own JavaScripts.
- Select All -
(function () { document.execCommand('selectall', true, null);})()
- Cut -
(function () { document.execCommand('cut', true, null);})()
- Copy -
(function () { document.execCommand('copy', true, null);})()
- Paste -
document.execCommand('insertHtml', false,'" + text + "');
text is data copied from ClipBoard.
Thanks.