changes to make it work on haxe 4

[mastef]

When building on haxe 4 you'll get :
src/Api.hx:7: characters 8-25 : Type not found : haxe.web.Dispatch
src/Editor.hx:8: characters 8-17 : Type not found : js.JQuery

This is due to these haxe 4 changes :
all : moved haxe.web.Dispatch into hx3compat library (https://github.com/HaxeFoundation/hx3compat).
js : js.JQuery and js.SWFObject were moved into hx3compat library (https://github.com/HaxeFoundation/hx3compat)

1. Add hx3compat library

In the build.hxml add -lib hx3compat before and after --next

2. Adjust imports due to depreciation

There's a few changes in the source to adapt to the new syntax like changing all instances of :

-import js.JQuery;
+import js.jquery.JQuery;

3. Typing of events :

Change all instances of

-(e : JqEvent)
+(e : js.jquery.Event)

4. The library array had some typing issues :

       if( program.libs != null ){
         for( lib in libs.find("input.lib") ){
-          if( program.libs.has( lib.val() ) ){
-            lib.attr("checked","checked");
+          if( program.libs.has( new JQuery(lib).val() ) ){
+            new JQuery(lib).attr("checked","checked");
           }else{
-            lib.removeAttr("checked");
+            new JQuery(lib).removeAttr("checked");
           }
         }
       }

-                       libs.push(i.val());
+                       libs.push(new JQuery(i).val());

5. Button methods

And I wasn't sure where the .button* methods were defined, as they were missing now. These changes made buttons work for me :

-compileBtn.buttonLoading();
+untyped compileBtn.button('loading');

-      new JQuery(".link-btn, .fullscreen-btn")
-        .buttonReset()
+      untyped new JQuery(".link-btn, .fullscreen-btn")
+        .button('reset')

-               compileBtn.buttonReset();
+               untyped compileBtn.button('reset');

Note : These are not optimal changes, just the ones that made try.haxe work with haxe 4 for me.

[clemos]

Thanks ! It would be nice to make a PR with these changes, I would happily merge it :)
Also, please use conditional compilation like :

#if (haxe_ver >= 4)
import js.jquery.JQuery;
#else
import js.JQuery;
#end

As for buttons (5), the bootstrap methods are defined here: https://github.com/clemos/haxe-bootstrap
Weird that they are not available any more.
This is probably related to (4): maybe some JQuery signatures have changed, and compileBtn (or lib) is not typed as JQuery but as Element or something.

[mastef]

I think that would be okay, but first try.haxe.org should support haxe version switching, right?

Because there are definitely big changes between the current haxe 3 and the upcoming haxe 4 - not sure try.haxe should be fully on haxe 4 yet. Would be nice to be able to switch between rc versions and run code there.

When I made as3hx.spacemages.com based on this repo, I did a Docker approach. Could have multiple haxe versions compiled in the Dockerfile, and then support different haxe versions by switching the command line haxe path.

And yeah, I was confused with the bootstrap buttons - wasn't able to find the methods quickly so hacked it with untyped - that's on me. I'm sure there's a proper way.