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Angular IDE for Modern Web in Eclipse

Looking for a unique balance between an Eclipse IDE and a modern web development experience? Then the Angular IDE plugin is ideal for you. It covers the demands of the modern web developer by allowing you to code JavaScript and TypeScript in the Eclipse IDE, as well as use command-line tools. As part of this IDE, not only do you get access to modern web languages, but also the assistance of instant validation, rich editors with code completion, and even integrated launching of your Angular server.

Want to dive in and give it a try? Install the Angular IDE plugin from the Eclipse Marketplace or use the the following npm commands to download the Angular IDE bundled with Eclipse IDE for your current Angular project:

> npm install -g angular-ide > ngide install ~/Development/angular-ide> ngide open Foo.ts

As soon as the Angular plugin is installed into your Eclipse IDE, you can use its new project wizard to generate your first Angular application using the Angular CLI. While your project is being created, the new Terminal+ view will appear. It will provide a context pertinent to your development -- via the command line. The view also performs automatic setup of needed command-line tools like Node and npm.

As with most modern development, there are templates that can be used to rapidly accelerate the creation of your first application. Here are examples of Angular CLI-based templates that will make your development much faster:

Before diving in with an example of getting started with your first Angular project, here are the key capabilities that come with the Angular IDE plugin for the Eclipse IDE.

  • TypeScript 2.1 validation and debugging
  • Advanced coding of HTML templates with validation and auto-complete
  • Real-time validation inside the editor using TSLint 4
  • Integrated usage of the angular-cli for Angular best practices
  • Quick fixes to rapidly address common concerns in TypeScript
  • Optimized for developers to make the most of Angular

Ready to get started with your own application in Angular? Here are the first few steps to take to get familiar with the concepts of components, services, routes and more.

You can read more at the Angular IDE learning center.

Step 1: Use the New Angular 2 Project wizard by selecting File > New > Angular 2 Project, give it a name and click "Finish" (default settings will be fine). The Angular IDE will set up a new project by using the Angular CLI "ng" command line.

Step 2: Once the project has been created, it will be listed in the "Servers" view. There are two options now -- to code more in the project, or to look at the application when it comes up (it will update itself anyway as you start to code it).

If you choose to start the server, go to the "Servers" view and expand Angular CLI. Select the project in question and click the "Start" button. A new tab will open in the Terminal+ view running "ng serve". Need more information on this? See Running the Angular Server guide.

Step 3: Create your first component by selecting New > Angular 2 > Component. It will be set up in the app directory of your project.

The following is a sample of a newly generated component.

import{ Component, OnInit } from '@angular/core'; @Component({ selector:'app-widget', templateUrl:'./widget.component.html', styleUrls:['./widget.component.css']})exportclass WidgetComponent implements OnInit {constructor(){} ngOnInit(){// initialize the component}}

Why not take a moment to follow the Angular 2 tutorial for details on how to make your first application from scratch!

Good luck!

Sours: https://www.eclipse.org/community/eclipse_newsletter/2017/february/article1.php

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    Jump start your Angular project with Angular CLI

    Angular 2, the complete re-write of the popular AngularJS framework was released in September of 2016. In March 2017 Angular 2 will be renamed to Angular, so I’ll be using the new name in this article.

    Initially the entry barrier into the world of Angular development was pretty high because of the need to learn and manually configure multiple tools. Even to get started with a simple application, you’d need to learn the TypeScript language (an easy job for Java developers), learn how to configure and use the TypeScript compiler, ES6 modules, a module loader (e.g. SystemJS), test runners, npm, a dev web server. To work on a real-world project, you’d also need to learn how to test and bundle your app for deployment.

    To jumpstart the development process, the Angular team created a tool called Angular CLI (see https://github.com/angular/angular-cli), which is a command-line interface that covers all the stages of creating an Angular application from scaffolding and generating an initial app to deployment. The generated code also includes pre-configured files for unit tests and bundling with the powerful Webpack bundler.

    While Angular CLI is still in beta, most of the developers like the ease of getting started with new projects. In this article I’ll show you how to create, bundle, and deploy an simple project with Angular CLI.

    To get started you have to have NodeJS installed on your computer (see https://nodejs.org). Both Angular and Angular CLI have lots of dependencies on other packages, which are available at the NPM repository at https://www.npmjs.com (it’s similar to Maven Central). NodeJS comes with npm – a package manager that can install individual packages from npmjs.org or use the config file package.json (like pom.xml) to install all project dependencies. I’ll show you how to create the initial project (including package.json) using Angular CLI.

    After installing NodeJS, you can start using npm in the command prompt window (or the Terminal on Mac) to install all required dependencies. Here’s the command to install Angular CLI globally on your computer (-g is for global):

    npm install @angular/cli -g

    After Angular CLI is installed, you can start using its ng command to generate various artifacts such as the new project, components, services as well as building and running the app with included Web server (webpack-dev-server). To create a new project called myproject just enter the following command:

    ng new myproject

    This command will create a new directory with the boilerplate project and install all required dependencies – thousands of files in the node_module directory of your project. This sounds like a lot of files to install, but enterprise Java developers are accustomed to this. Depending on the speed of your Internet connection, it can take anywhere from one to five minutes. This time can be substantially decreased by using the Yarn package manager (an alternative to npm), and I described how to do it in this blog post.

    Change directory to your newly generated project, and you’ll see something like this:

    app works!

    Figure 1. Project structure

    To build the dev version of this app,

 run the following command:

    ng serve

    Now open your browser at http://localhost:4200, and you’ll see the following page rendered by the top-level component app.component.ts:

    running app

    Figure 2. Running the app

    Angular CLI has many other commands and you can read about them in the product documentation at https://github.com/angular/angular-cli. But I just want to give you a quick overview of different ways of building the app.

    The command ng serve invoked the webpack-dev-server that took all required files from our project and bundled them up in memory. The size of this app was not optimized since we work in the development mode now. If you open the network tab in the Dev Tools of your browser, you’ll see that the size of this tiny app is 3MB.

    Let’s make it smaller by requesting the production build with optimization:

    ng serve –prod

    Refresh the page at localhost:4200, and you'll see that the size of our app was reduced to 130KB. When you bundle an app with the option -prod, Anfular CLI performs the Ahead-Of-Time (AoT) compilation and doesn't include the the Angular compiler into the bundle.

    While using the AoT mode will lower the size of the small apps, this may not be the case for the larger ones. But the speed of rendering of the app will improve.


    The ng serve command is bundling the app in memory, and automatically rebuilds it as soon as you make changes in the code. But for prod deployment you need files, and the ng build command will create the directory called dist that will contain the files with your application bundles, their gzipped versions, styles, and source maps for debugging TypeScript in the browser. Try it out by running the following command:

    ng build –prod –aot

    Now you can take the content of this dist directory and copy it to your Apache, NGINX, Tomcat, or any application server of your choice. The build and deployment process can be also automated using npm scripts, Gulp, Grunt et al.

    Learn More

    The goal of this article was to give you a very high level overview of the initial generation and deployment of a very simple Angular app. To explore Angular further read its docs at https://angular.io/docs/ts/latest/. Get familiar with TypeScript, which is a piece of cake for any Java developer. This language supports classes, interfaces, annotations, generics, which are very similar to what you use in Java. Knowing the basic syntax of JavaScript is helpful, but not a must. Friends don’t teach friends JavaScript. They teach TypeScript.

    I will also be speaking at the Devoxx US conference happening in San Jose, California on March 21-23. I will present two talks about Angular 2:

    If you are attending Devoxx US and want to learn more about Angular 2, plan to attend my talks.

    I recorded a video that shows how to generate and bundle a project with Angular CLI: https://www.youtube.com/watch?v=VKQEN7IyanU

    Sours: https://www.eclipse.org/community/eclipse_newsletter/2017/january/article1.php
    #03 AngularJS with Eclipse

    Angular 2 is a framework for building desktop and mobile web applications. After hearing rave reviews about Angular 2, I decided to check it out and take my first steps into modern web development. In this article, I’ll show you how to create a simple master-details application using Angular 2, TypeScript, Angular CLI and Eclipse Java EE.

    Tools and Prerequisites

    The Goal

    Let’s create a simple app containing a vehicle list with the ability to edit vehicle properties. I’ve included a sample project that you can refer to. 

    Getting Started in Eclipse 

    From the Eclipse menu, choose File>New>Dynamic Web Project; or right click in Project/Package Explorer and choose New>Dynamic Web Project.

    Image titleType Vehicles for the project name and click Finish—that’s all you need here.

    Image title

    Angular CLI Comes to the Scene

    Angular CLI is a command-line tool that allows you to create a working Angular 2 application out-of-the-box without a massive amount of manual work—and also allows you to generate Angular 2 components, services, etc. in the same way. Let’s try it! Right-click the newly created project and select Show in>Terminal.

    From the Terminal view, type . After the process finishes, refresh the project in Eclipse—the src folder is updated with an app folder and several files; index.html (well-known to web developers) and main.ts among them. Is this really all that’s required to get an Angular 2 Hello World application? Yes! Open the project in Terminal view and type . After a short time, you’ll see output like: 

    Open your browser (I use Chrome for testing) and type the given URL (http://localhost:4200/). You’ll see a “Loading…” message and then “App works!”. See, it actually works!

    Model

    Let’s go ahead and create a model for our app. This model will be pretty simple. Create a package app.model in your src folder, and in it create file vehicle.ts with the following contents:

    The class contains only four fields describing some vehicle.

    Components

    It’s time to make some UI bricks for our application, called components. Open the Terminal view for folder (Your Project)>Java Resources>src>app and type . The CLI command ng with the key g (or generate) is responsible for generating Angular 2 application entities and, particularly, components.

    As you can conclude from its name, vehicle-list is responsible for displaying a list with vehicle details. Let’s expand vehicle-list folder and open vehicles-list.component.ts:

    All the basic component infrastructure is present here.

    • The first line is importing the Component decorator function. This function is describing metadata for any Angular 2 reusable UI component.
    • Selector specifies the tag name that would trigger this component’s insertion.
    • TemplateUrl and styleUrls specify file names that contain an HTML-based template for the component UI and CSS styling for it.
    • Class VehiclesListComponent should contain almost all inner component logic written in TypeScript. For now, it contains only an empty constructor and empty ngOnInit lifecycle hook. This hook can be useful for some “heavy” initialization like network or database calls, constructor should be used only for basic initialization, without any heavy IO.

    OK, we’ll definitely need to store a list of our vehicles somewhere. Let’s add the field  to the  class. Of course, Vehicle will be highlighted in red—currently, the TS compiler knows nothing about it. To fix this, add  to the imports section and save the file. The red highlighting should disappear. If not, make a small edit (like adding space) and save again—unfortunately, the current version of the TypeScript plugin has poor validation.

    Well, now we have a vehicle list, but how can we interact with it? Passing it to the constructor would make our code less flexible by requiring a concrete list to be specified when creating a vehicle list component. There’s a better solution—Angular 2 supports Dependency Injection out-of-the-box, and it can be accomplished using Angular 2 Services.

    Go to app.model in the terminal and type . After the command executes, refresh app.model. Two files will be created,vehicle.service.spec.ts and vehicle.service.ts. The last one is interesting to us. For now we won’t implement any complex logic to obtain the list and will just hard code our vehicles list. In the following code we import the Injectable decorator, set up our list, assign given list to class field and return it by demand: 

    Now go back to vehicles-list.component.ts, import VehicleService in the same way as Vehicle is imported, and make 2 more edits: add  to  and change constructor to:

    To avoid compilation errors, you’ll need to keep consistent not only component ts script, but also spec.ts script generated for unit tests. Since we changed the constructor a bit, open it, import VehiclesService as it’s done above and change component creation to the following:

    We’re basically done with the component, let’s switch to UI. Open vehicle-list.component.html and replace its mock contents with our table.

    We do a conceptually simple thing here—create a table with a constant header and then iterate over vehicles list, creating a table row for each vehicle. A row is composed of cells with corresponding properties.

    • *ngFor is a built-in directive iterating over a list (vehicles in our case).
    •  {{ }} tells Angular to read a given property from the TypeScript model and render it.

    Also, we specify table class here because we want to have some styling for it—corresponding styles are put into vehicles-list.component.css. You can download the sample project and open them if necessary.

    Plugging In

    Ok, we’re done with our initial UI. To see the result, we’ll need to plug our component into the main app component. To do this, in app.component.ts import VehiclesListComponent and then add a directive to @Component. The result will be like the following:

    A second insertion point is app.component.html. Just add our selector tag: 

    In the Terminal, go to the project root dir and type …Here we go!

    Image title

    Master-Details

    Our table is pretty, but not very interactive, huh? OK, let’s make it a bit more “dynamic” by adding a Details view that displays a clicked table row and allows the fields to be edited. Let’s create  under the same parent with  using the command .

    Like it was for Vehicles List, a folder with ts and HTML/CSS files will be created. We’ll need to modify 2 of them. VehicleDetailsComponent in vehicle-details.component.ts needs to have a field for current vehicle—vehicle:Vehicle, with @Input directive above. This decorator declares the vehicle field as an input, which makes passing an actual value to it much easier.

    Now let’s take a closer look at the template file for it:

    • *ngIf=”vehicle”—Designates to only proceed with the content when vehicle field has value, which is needed to avoid errors when selection is empty.
    • [(ngModel)]=”vehicle.name” (same for type and mass)—Implements bi-directional data binding between input field and corresponding property.

    Now, we need to change our  to handle selection. Let’s add a  field and a method  to handle selection.

    Also, in the HTML template, we’ll need to add a tag for the details component. To make it work, we need to import  and add the corresponding directive. After given changes, vehicles-list.component.ts will look like the following:

    Next, let’s change the vehicles list template, vehicles-list.component.html. We need to add the click handler to each table row to call the corresponding selection method—. Also, let’s add a tag for the vehicle details component below our table:

    Let’s call npm start and see how it looks:

    vehicleregpropertiesYou can try editing any value under the “properties” and the change will be immediately reflected in the table, nothing extra needed for it! Perfect.

    A Little Bit of Styling

    It looks pretty good now, but it’s a bit difficult to determine which row is selected. Let’s fix this. Add an attribute  to the <tr> tag in vehicles-list.component.html. Its meaning is pretty obvious—add a CSS class for the case when the current row’s vehicle equals the selected one. Of course, to make this work, we need to add the corresponding style to vehicles-list.component.css:

    Let’s add hovering style too! It’s as easy as adding one line to the CSS file:

    vehicleregselected

    My Final Thoughts

    I haven’t done too much web development in my life. When I first started out as a developer, if you wanted anything more complex than just some static web pages with a navigation bar it required a lot of JavaScript coding. This proved quite a challenge with all that dynamic typing, a lack of a normal object model, and the headache of making it work and look as expected under different browsers. Now that I have returned to web development, I can definitely say that TypeScript is pretty awesome. It allows you to write almost any complex logic and it’s nearly as simple as Java—you are free to write your code and be “Java-ish”, making the classes/methods you want.

    Angular also brings a huge improvement to web development. Now you can have natural HTML templates avoiding complex DOM manipulation and focus on creating components and UI. Angular CLI accelerates development by creating necessary component stubs using Angular best practices with just a single short command.

    The recent release of Webclipse has added significantly better support for TypeScript, though the Eclipse community at large is still lacking a bit. I am excited about recent discussions on language server support inside Eclipse coming in the future!

    Resources

    vehicles.zip—Sample project for this blog

    https://angular.io/docs/ts/latest/tutorial/—Tour of Heroes tutorial for Angular 2

    https://cli.angular.io/—Angular CLI with commands description

    https://www.genuitec.com/dow/tech/jsjet-javascript-in-eclipse/using-typescript/ - TypeScript support

    Sours: https://dzone.com/articles/creating-my-first-web-app-with-angular-2-in-eclips

    Angular eclipse

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    Angular JS Application Using Eclipse IDE (Simple Application)

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