On Tuesday, February 25, 2014 8:53:39 AM UTC+1, Benjamin Bitdiddle wrote: > > For a particular GWT module, I'm able to solve a problem in compiled mode > by manipulating the JS object representing the Java object. (Specifically, > I need to clone the object, so I simply create a new JS object, copy the > properties from the original JS object, and assign a new hash value.) I've > tested this an it works OK. > > Since that approach (that I use in compiled mode) doesn't work in Dev > Mode, I want to use Object.clone(), which is available in Dev Mode, to > perform the clone operation. However, I'm not sure how to accomplish this > as every approach I try hits a problem. > > - I can't seem to use deferred binding (i.e. GWT.create() and "replace > with" in the module gwt.xml file), for two reasons: > > > 1. Even in Dev Mode, when I replace a class using "replace with", the > class I swap in seems not to be able to use JRE-only methods, such as > reflection or Object.clone. I get an error that the "source code for > the > method is not available". I don't want this class compiled, but it > seems > to want to compile it to JS. > 2. If I solve #1, then I have to figure out how to get the "replace > with" to be conditional based on being in dev mode. I'm using ant to > build > the compiled-mode stuff and I'm using Eclipse to run dev mode. Is > there > way to make this automatic so I can use the same module gwt.xml in > Eclipse > and for an ant build? I guess I'd need an ant property that > automatically > is set by compiled but not by development mode, or vice versa? > > > - I also tried simply using new Foo() (rather than GWT.create() and > deferred binding), placing the JS-copying/GWT-compile-friendly version of > Foo in the normal location. This works for GWT compiled mode obviously. > Then for Dev Mode, I add a new source directory to the class path in > Eclipse and stick a different class Foo there that uses the JRE-only APIs > (such as Object.clone). However, this hits the same problem as deferred > binding - I still get an error that "the source code is not available" for > various APIs I use in that version of Foo (e.g. reflection APIs). > > Right now, I've managed to use the Eclipse expression panel to manually > load the JRE-version of Foo I mentioned above (in the special class path > segment). So I know it's possible for it to coexist with other Dev Mode > classes, but how do I load it programmatically as part of starting GWT > DevMode class? >
It seems like you're looking for super-source and @GwtScriptOnly. In your standard source location you'll put the class you want to use in DevMode, then in the super-source (you have to declare a <super-source path="super" /> in your gwt.xml) you put the version of the class you want to use in web mode, and you annotate it with @com.google.gwt.core.client.GwtScriptOnly (note: that class only exists in super-source too, so you won't find it by auto-complete in your IDE). See http://www.gwtproject.org/doc/latest/DevGuideOrganizingProjects.html#DevGuideModuleXml This is used in many places in GWT if you need examples: WeakMapping, StringCase, SafeHtmlHostedModeUtils, etc. (that said, I suspect you're doing something Wrong™ if you need this for Object.clone(), and you'd better try to find an alternative) -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/groups/opt_out.
