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hxextjs

v0.0.2

Published

Ext JS 4.0 Externs for haXe

Downloads

4

Readme

This Repo is no longer maintained (IMPORTANT)

To anyone coming looking for ExtJS externs for Haxe - be warned - I am not maintaining this. I only ever got this working to a very basic level and there were issues with ExtJS using a different object model to Haxe, and I never ended up using it in my project so these issues remained unresolved.

I've left the github project up in case anyone wants to take it further, and it seems some people have had some luck:

https://groups.google.com/forum/#!topic/haxelang/JUzl1WNwHmU

you could try contacting them directly. I think this is the way to go: fix buildjs to build better externs, and then use a custom JS generator to work with ExtJS's object model... but it's not an effort I'm likely to be part of.




Ext JS 4.0 Externs for haXe

Here is my attempt at creating Ext JS externs for haxe. They compile correctly at the moment but expect errors. Hopefully with time I will be able to weed them out and have it working properly.

Kudos goes to Joshua Granick for his excellent tool to read jsduck documentation, which Ext JS uses, and turn it into haxe externs:

  • http://www.joshuagranick.com/blog/2011/10/14/use-buildjs-to-make-externs-for-haxe-js-automatically/

There were still a few glitches, but overall this saved a lot of time. Hopefully it will create something functional in the end.

The example

The example I have compiled is in main.js, and can be viewed from index.html. I have tried to build the code from this tutorial:

  • http://www.sencha.com/learn/a-basic-login/

Other than removing the server side bits, there are some things that need recoding. For example, the tutorial tries to reference "login" in the same statement that defines "login", which haxe can't accept. Will have to figure out another way to code this.

Steps for getting this far

If you want to help with the effort, here are the steps for getting this far:

  • Download the latest ext-4.* source
  • Use jsduck to create the JSON documentation for Ext JS
  • Use buildjs to create the externs from the JSON files
  • Make some changes that are required for the library to compile in haxe
  • Build a sample project

Most of these can be done by some handy shell scripts:

  • ./generateExterns.sh to download extjs, and generate externs using ''jsduck'' and ''buildjs''
  • Make custom changes to a few files, as documented below
  • ./packageForHaxeLib.sh to package the new externs for haxelib and submit them.

Run jsduck to generate the JSON documentation

# Run this from the root of the repository
jsduck ext-4.0.7/src --export=full --output jsduck-json/ --images download/docs/images --pretty-json

Run buildjs to generate the haxe externs

# Run this from the root of the repository
haxelib run buildjs externs -extjs jsduck-json/ haxe/

Build example

# Run this from the root of the repository
haxe build.hxml

Changes required after building the project

Had to modify these things:

  • change ext/Array.hx to have a type parameter in the class definition
  • commented out "name" property in ext/env/Browser.hx
  • commented out "name" property in ext/env/OS.hx
  • removed package "core" in "import ext.core.Element;" in ext/AbstractComponent.hx
  • rename "ext/String.hx" to "ExtString.hx" - to stop it getting confused and expecting this instead of a normal string.
  • in "ext/Ext.hx" change method "onReady()", final 2 parameters should be optional. (Line 120)
  • rename "ext/String.hx" to "ext/ExtString.hx" (they're all static and shouldn't be needed in haxe, and it gets confused with the haxe String class)

Licence

These externs and related haxe code are licenced under BSD. The ExtJS library itself you can get from Sencha, and is usually available under either GPL or a commercial licence.