On Wednesday, May 16, 2012 4:03:40 PM UTC+2, Chris Lercher wrote: > > There are several competing (or complemental) new/experimental (or > deprecated) classes around, which deal with rendering Widgets in > alternative (often lazy) ways in GWT: > > - GXT2's lazy > Component<http://grepcode.com/file/repo1.maven.org/maven2/com.extjs/gxt/2.2.0/com/extjs/gxt/ui/client/widget/Component.java> > (which > has been deprecated in GXT3) > - > LazyPanel<http://google-web-toolkit.googlecode.com/svn/javadoc/latest/com/google/gwt/user/client/ui/LazyPanel.html> > - > PotentialElement<http://google-web-toolkit.googlecode.com/svn/javadoc/latest/com/google/gwt/user/client/ui/PotentialElement.html> > ["experimental"] > - > IsRenderable<http://google-web-toolkit.googlecode.com/svn/javadoc/latest/com/google/gwt/user/client/ui/IsRenderable.html> > ["very > experimental"] and > RenderablePanel<http://google-web-toolkit.googlecode.com/svn/javadoc/latest/com/google/gwt/user/client/ui/RenderablePanel.html> > ["experimental"] > > Seeing how GXT2 had problems with their lazy rendering, what can we expect > from these concepts? Looking into trunk, IsRenderable seems to evolve > (using a new RenderableStamper class), so there's probably something in the > pipeline... > > I know, that this is not a concrete question - I'm just curious if someone > has interesting information about this subject? >
AFAICT, PotentialElement and IsRenderable are to speed-up rendering of widgets, particularly when used within an HTMLPanel or RenderablePanel in a UiBinder template: the widget is "rendered" to SafeHtml (and stamped), concatenated to the HTML of the containing HTMLPanel and "rendered" as a single big HTML string, then the stamped element is retrieved out of the HTMLPanel and the widget is "attached" to it (claimElement) and finally "logically attached" to the HTMLPanel (as its parent widget). I suppose they could also be used to attach widgets to some HTML generated (pre-rendered) on the server-side (similar to Closure's decorate(), and the various static wrap() methods used in "basic" GWT widgets; there's no notion of canDecorate() as in Closure though, so it'd be your responsibility to build this into your widgets; not really for reusable widgets, more for applications you control from end-to-end). -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/KcnUx7up1MsJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
