[browser] cannot use the 'paste' menu item in the browser application

[lmcbout]

Copy & Paste
1- Why don't we have those two options in the context menu of the editor ?
2- In the top menu bar of Theia, Copy / Paste are available, but no key accelerator for the Paste
3- After doing of some code copy, we cannot use the "Paste" from the top menu, a dialog says to use the browser paste or shortcut, --> Paste from Theia menu does not work
We should be able to trigger the PASTE from the browser when selecting the Paste option from Theia
Compare to eclipse editor, "Copy" and "Paste" are available form the menu, context menu in the editor and have accelerator for it.

[vince-fugnitto]

1. Why don't we have those two options in the context menu of the editor ?

The cut, copy and paste options are present in the context menu of the editor as of #2633

2. In the top menu bar of Theia, Copy / Paste are available, but no key accelerator for the Paste

We only register the keybinding for copy and paste if the target supports it.
For the browser, the paste action is not supported so we do not see the accelerator for it, however since the electron target does support it the accelerator is present.

3- After doing of some code copy, we cannot use the "Paste" from the top menu, a dialog says to use the browser paste or shortcut, --> Paste from Theia menu does not work

The paste action is unsupported if "The 'paste' command return false not only if the feature is unavailable, but also if the script calling it has insufficient privileges to perform the action"

Compare to eclipse editor, "Copy" and "Paste" are available form the menu, context menu in the editor and have accelerator for it.

This isn't a fair comparison, eclipse is a native desktop ide. If we compare our electron instance to eclipse they both support copy and paste.

[akosyakov]

There is a PR introducing core clipboard API with checking and granting privileges: #5527 We should look into improving and landing it. In the scope of it we can look whether existing clipboard actions can be rewritten in the better way.