Integrating NativeScript with Angular 2.

Running locally

Get submodule code

The project bundles the NativeScript modules and Angular as source code dependencies set up as git submodules. You need to get them by running:

$ git submodule update --init

Install dependencies

$ npm install -g grunt-cli
$ npm install -g tsd
$ npm install -g nativescript

You may need to configure your tsd GitHub access token to avoid rate-limit-related download errors. See the token installation instructions in the .tsdrc section here.

You will also need the Android SDK to build this project. Install it manually before continuing with the next steps.

Then install the NativeScript tools according to: this article.

Then install the needed NPM packages:

$ npm install

Compile and prepare NativeScript and Angular

$ (cd deps/angular/modules/angular2 && tsd reinstall)
$ grunt prepare

Initialize the test NativeScript app (ng-sample)

$ grunt shell:ngSampleInit

Compile the app and update its `./src` dir:

$ grunt ng-sample

Developer workflow:

Make some changes to the app or src/nativescript-angular
Navigate to the ng-sample subdir: $ cd ng-sample
Compile app: $ grunt app
Run in emulator $ tns emulate android --avd <YOUR-AVD>

Protip: combine #2 and #3 above in a single command run from the project root directory (works only on Unixy shells):

$ (cd ng-sample && grunt app && tns emulate android --avd nexus4-x64)

On Windows, you can wrap those commands in a BAT file.

Finding your way around

The ./src/nativescript-angular folder holds the integration source code.
The sample app below ng-sample is assembled by copying typescript dependencies in its src folder:
- angular2 source code
- nativescript-angular code
- NativeScript typings: typings/nativescript
All required JavaScript packages (including compiled NativeScript modules) are copied to ng-sample/app/tns_modules

How the integration code works

Use the Angular Parse5DomAdapter to parse component markup.
Provide a custom renderer (NativeScriptRenderer) that works with the parsed DOM and creates NativeScript UI elements. Only limited number of visual elements supported so far.

Known issues

The renderer code needs to be cleaned up and made extensible, so that people can register new visual elements.
There are certain issues with the Parse5DomAdapter and we'll likely need to provide our own later on:

Element and attribute names always get lowercased.
Self-closing elements (<Label text="Name" /><Button text="Save" />) get parsed wrong (in this case Button gets parsed as a Label child.

The renderer implementation is by no means complete: we are still need to support view (de)hydration, DOM text updates, event dispatching, actions, etc.

License

Muthukumaruma/nativescript-angular

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