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.bars...@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 > > > >
