Re: [Clipboard] Web API for clipboard changes.

Please share it with the rest of the group. Thanks!

Sincerely,
   James M. Greene
On Jun 15, 2015 5:48 PM, "Kelvin Poon" <kelvinp@google.com> wrote:

> Thank you for your interest Arthur.
> I have drafted up a more detailed implementation doc and shared it with
> you and Hallvord.
>
> Please feel free to take a look and comment.
>
> Kelvin
>
> On Thu, Jun 11, 2015 at 3:57 AM Arthur Barstow <art.barstow@gmail.com>
> wrote:
>
>> On 6/2/15 4:05 PM, Kelvin Poon wrote:
>> >
>> > Hi public-webapps
>> >
>> >
>> > We are exploring a new web API for content to be notified of clipboard
>> > changes and would like to discuss it here.
>> >
>> >
>> > The problem
>> >
>> > For certain classes of web apps, it is necessary to determine when new
>> > clipboard contents have been set, e.g. in order to fetch and display
>> > them, to update context menus, or synchronize the content with another
>> > application or device.
>> >
>> >
>> > The problem is that the web standard currently provides no explicit
>> > notifications when new content is copied from another application to
>> > the clipboard.  As a result, these web apps typically re-fetch the
>> > clipboard every time they regain focus, and only act on the contents
>> > if they have changed since last time (e.g. passing it to a remote
>> > system, updating context menu, etc).  This polling mechanism is
>> > generally inefficient, especially when the clipboard contains a large
>> > image file.
>> >
>> >
>> > We currently have interest from Citrix and Chrome Remote Experience
>> > teams in improving Chrome's clipboard support.
>> >
>> >
>> > The proposal
>> >
>> > Google propose to update the W3C Clipboard API and events
>> > specification <http://www.w3.org/TR/clipboard-apis/>with an
>> > onClipboardChangedevent on the document object.  The user agent should
>> > only signal the event if
>> >
>> > 1. a frame re-gains focus AND
>> >
>> > 2. the clipboard has changed since it last had focus.
>> >
>> >
>> > In addition, the user agent should not signal clipboard change events
>> > while a frame has focus.  This will relieve the web app from the
>> > burden of filtering out notifications in response to clipboard changes
>> > generated by the app itself.
>> >
>> >
>> > We think this new API will avoid fetching large clipboard content
>> > repeatedly and unnecessarily for clipboard changes.
>> >
>> > Does the community think this API would be useful?
>> >
>>
>> Hallvord, All - do you have any feedback for Kevlin?
>>
>> > We can go into more details and work on a detailed design together if
>> > the community is interested.
>> >
>>
>> Kelvin, if there is a resource that includes details, please let us
>> know. (I suppose another option is a Pull Request but it might make
>> sense to first wait for some feedback from the group.)
>>
>> -Thanks, ArtB
>>
>>
>>
>>