If all the classes are emulated and the source available, then it will just work. If it isn't, then it just won't work.
Even if the first case is true, since it doesn't use any GWT widgets, then it is unlikely to do anything useful. What is the point of your enquiry? (That is not a rhetorical question :-)) Ian http://examples.roughian.com 2009/4/7 Jake <[email protected]> > > Hi Paul, > > Thanks for the reply. I agree, these would all be issues when > compiling arbitrary apps. But for the reduced case, I think it still > makes sense to ask the question, how would you solve the problem of > transparently importing alternative libraries? > > I'd appreciate it if anyone could let me know. Thanks, > > Jake > > On Apr 7, 1:15 pm, Paul Robinson <[email protected]> wrote: > > otakuj462wrote: > > > Hi all, > > > > > I'm just getting started with GWT, and I'm wondering whether or not a > > > particular scenario is possible. I would like to take an application > > > that has been written on top of a native Java GUI library like SWT, > > > and throw the unmodified source code (without even changing the import > > > statements) into GWT, and have it return a working JavaScript web > > > application. Now, obviously GWT doesn't support SWT on its own, and it > > > also cannot compile SWT down to JavaScript. So, what I would imagine > > > doing is creating a SWT-compatible library on top of GWT, mapping API > > > calls onto either GWT widget API's, or some native JavaScript widget > > > library (like ExtJS or Dijit) using JSNI. But I imagine this SWT- > > > compatible library would need to live in its own package, distinct > > > from the SWT package, and thus, in order to use the SWT-compatible > > > classes from this library, you would at least need to change the > > > import statements when you compile the application's source code. Does > > > GWT provide a mechanism for this, so that you can substitute custom > > > libraries for native ones, without changing the import statements in > > > the source? > > > > > If I were programming in C or C++, I believe this would be > > > accomplished using ifdef macro preprocessing and sending flags to the > > > compiler (#ifdef GWT import foo; #ifndef GWT import bar;). Perhaps GWT > > > has a mechanism for this kind of pattern? > > > > > Please let me know. Thanks, > > > > > Jake > > > > Even if all SWT widgets had GWT equivalents (or if you made > > equivalents), you'd still have problems because native java apps behave > > differently from GWT apps. For example: > > - GWT runs in a browser and so is single threaded whereas your native > > java app is in general multithreaded > > - java apps have full access to the local (client) file system, but > > browsers do not. > > - java apps may use other java libs, each of which will have javascript > > translation issues (eg JDBC) > > > > Paul > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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 -~----------~----~----~----~------~----~------~--~---
