Hi guys -

I've spent more than a day now on a quest to get DevMode running properly 
for GWT 2.7 with my multi-module GWT application. NOTE: I can run SDM 
completely fine using the bookmarklets, but I'm not sure that's the right 
way to do things now.

As background, I use the gwt-maven-plugin in my project.

It started (innocently enough) with an attempt to rectify the "[ERROR] 
Current binding properties are expanding to more than one permutation but 
per-file compilation requires that each compile operate on only one 
permutation." error I was seeing when attempting to just press the "Dev 
Mode On" button after changing code without first turning off dev mode. 
That was a bit of an annoyance that I thought I could get around.

After reading this 
post: 
http://stackoverflow.com/questions/27267704/gwt-super-dev-mode-recompile-doesnt-work,
 
which led to this google group 
post: 
https://groups.google.com/forum/#!topic/google-web-toolkit-contributors/5lgtM77-1tM,
 
it appears that directly running SDM and using the bookmarklets is not the 
proper way to do things in GWT 2.7+

My "project" was set up using @tbroyer's GWT multi-module archetype back on 
GWT 2.5. I build my project, deploy to a local Tomcat instance running at 
localhost:8080, and from there, I use the mvn:run-codeserver command to 
start the SDM server at localhost:9876. I navigate my browser to 
localhost:8080, then I can hit the Dev Mode On button and compile my 
applicable modules and I'm good to go with sourcemaps and debugging in the 
browser.

How do I get standard Dev Mode with no bookmarklets (which I know starts 
SDM by default and I think is the *right 2.7 way* to do things) to work in 
this configuration?

My pom includes:
<noserver>true</noserver>
<runTarget>http://localhost:8080</runTarget>

and I started the code server (I think) using 
mvn gwt:debug

. This seems to start up okay and I see:

[INFO] --- maven-resources-plugin:2.7:resources (default-resources) @ 
xxx-gui-client ---

[INFO] Using 'UTF-8' encoding to copy filtered resources.

[INFO] Copying 76 resources

[INFO] 

[INFO] --- maven-compiler-plugin:3.5.1:compile (default-compile) @ 
xxx-gui-client ---

*[INFO] Nothing to compile - all classes are up to date*

[INFO] 

[INFO] <<< gwt-maven-plugin:2.7.0:debug (default-cli) < process-classes @ 
xxx-gui-client <<<

[INFO] --- gwt-maven-plugin:2.7.0:debug (default-cli) @ xxx-gui-client ---

[INFO] starting debugger on port 8000 in suspend mode

[INFO] create exploded Jetty webapp in 
/Users/xxx/Workspace/xxx/xxx/xxx-gui/client/target/xxx-client-5.7.0-SNAPSHOT

[INFO] Listening for transport dt_socket at address: 8000


Is Dev Mode not seeing my modules? When I run 
mvn get:run-codeserver

I see similar output, but it finds all the classes it needs to compile:


[INFO] --- maven-resources-plugin:2.7:resources (default-resources) @ 
xxx-gui-client ---

[INFO] Using 'UTF-8' encoding to copy filtered resources.

[INFO] Copying 76 resources

[INFO] 

[INFO] --- maven-compiler-plugin:3.5.1:compile (default-compile) @ 
xxx-gui-client ---

*[INFO] Changes detected - recompiling the module!*

*[INFO] Compiling 1335 source files to 
/Users/xxx/Workspace/xxx/xxx/xxx-gui/client/target/xxx-client-5.7.0-SNAPSHOT/WEB-INF/classes*

[INFO] 

[INFO] <<< gwt-maven-plugin:2.7.0:run-codeserver (default-cli) < 
process-classes @ xxx-gui-client <<<

[INFO] 

[INFO] --- gwt-maven-plugin:2.7.0:run-codeserver (default-cli) @ 
xxx-gui-client ---

[INFO] Turning off precompile in incremental mode.

[INFO] Super Dev Mode starting up


What's the link between that and my Tomcat instance? How do I "activate" 
dev mode in the browser? I see no red refresh button, there are no 
compilations happening in the code server terminal. What am I missing? Do I 
need an IDE to get a debugger going or do I need to tell Chrome to look at 
the code server? Would I be better served moving away from the older 
gwt-mvn-plugin and using tboyer's newer version?


I feel like this step:


Compile your application once using the ant build target. Ideally, you can 
> use GWT’s -war option to generate output files directly into your external 
> server’s static content folder. Otherwise, you’ll need to copy the GWT 
> output folder from war/<moduleName> to your external server’s static 
> content.


from this page: 
http://www.gwtproject.org/doc/latest/DevGuideCompilingAndDebugging.html 
could be the key, but I'm not understanding how that translates to using 
mvn gwt:debug. I've tried using the <webappDirectory> parameter and set it 
to where my local tomcat serves the GWT-generated files from, but nothing 
seems to get written there.

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