Add support for lookup on iOS

[Enrica Casucci]

This tracks the work required to support lookup in WK2 on iOS.

rdar://problem/19994090

[Enrica Casucci]

Created attachment 251870 [details]
Patch

[Tim Horton]

Comment on attachment 251870 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=251870&action=review

> Source/WebKit2/UIProcess/ios/WKContentViewInteraction.mm:1309
> +        CGRect presentationRect = view->_page->editorState().selectionIsRange ? view->_page->editorState().postLayoutData().selectionRects[0].rect() : view->_page->editorState().postLayoutData().caretRectAtStart;

Why do we only use the first rect? What happens if you have a multi-line selection?

[Enrica Casucci]

(In reply to comment #2)
> Comment on attachment 251870 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=251870&action=review
> 
> > Source/WebKit2/UIProcess/ios/WKContentViewInteraction.mm:1309
> > +        CGRect presentationRect = view->_page->editorState().selectionIsRange ? view->_page->editorState().postLayoutData().selectionRects[0].rect() : view->_page->editorState().postLayoutData().caretRectAtStart;
> 
> Why do we only use the first rect? What happens if you have a multi-line
> selection?

We could in theory compute the union of the rects, but this is used only to position the popover. I don't have clear indication of what is expected here and I think this is  good enough to start.

[Enrica Casucci]

Committed revision 183503.