I have started learning Dart. First, I read Why Dart Excites Me. Second, I installed Dart Editor. Third, I developed a small, model-driven web application called WebLink.
The WebLink application has a model with only one concept called Url (Url.dart). The Url class has two properties: link and description. A url is a part of the model.
A collection of web links is represented by the Urls class (Urls.dart).
class Urls {
LinkModel linkModel;
List<Url> list;
Urls(LinkModel this.linkModel) {
list = new List();
}
void add(Url url) {
list.add(url);
}
Iterator<Url> iterator() {
return list.iterator();
}
}
The model (LinkModel.dart) has one entry point that is a collection of urls.
class LinkModel {
Urls urls;
LinkModel() {
urls = new Urls(this);
}
void createUrls() {
Url modelibra = new Url(this);
modelibra.link = "http://www.modelibra.org/";
modelibra.description = "Domain model framework";
urls.add(modelibra);
Url dart = new Url(this);
dart.link = "http://www.dartlang.org/";
dart.description =
}
}
The web application (WebLink.dart) creates the empty model, fills the model with two urls and displays them in the web page.
#import('dart:html');
#source('Url.dart');
#source('Urls.dart');
#source('LinkModel.dart');
class WebLink {
LinkModel linkModel;
WebLink() {
linkModel = new LinkModel();
}
void displayUrls() {
String r = "";
for (Url url in linkModel.urls) {
r = r + url.link + "<br/>" + url.description + "<br/><br/>";
}
write(r);
}
void write(String message) {
document.query('#status').innerHTML = message;
}
}
void main() {
WebLink webApp = new WebLink();
webApp.linkModel.createUrls();
webApp.displayUrls();
}
The web page (WebLink.html) has a title (html) and a list of web links with their descriptions (js).
<html>
<head>
<title>WebLink</title>
</head>
<body>
<h1>Web Links</h1>
<h2 id="status">dart is not running</h2>
<script type="text/javascript" src="WebLink.dart.app.js"></script>
</body>
</html>
The application is created and run in the Dart Editor.
The following is the content of the web page in Chrome:
http://www.modelibra.org/
<pre class="brush:java">class Url {LinkModel linkModel;I am Dzenan.String link;String description;Url(LinkModel this.linkModel) {}}</pre>
A collection of web links is represented by the Urls class (Urls.dart).
class Urls {
LinkModel linkModel;
List<Url> list;
Urls(LinkModel this.linkModel) {
list = new List();
}
void add(Url url) {
list.add(url);
}
Iterator<Url> iterator() {
return list.iterator();
}
}
The model (LinkModel.dart) has one entry point that is a collection of urls.
class LinkModel {
Urls urls;
LinkModel() {
urls = new Urls(this);
}
void createUrls() {
Url modelibra = new Url(this);
modelibra.link = "http://www.modelibra.org/";
modelibra.description = "Domain model framework";
urls.add(modelibra);
Url dart = new Url(this);
dart.link = "http://www.dartlang.org/";
dart.description =
"Dart is a programming language for creating web applications.";
urls.add(dart);}
}
The web application (WebLink.dart) creates the empty model, fills the model with two urls and displays them in the web page.
#import('dart:html');
#source('Url.dart');
#source('Urls.dart');
#source('LinkModel.dart');
class WebLink {
LinkModel linkModel;
WebLink() {
linkModel = new LinkModel();
}
void displayUrls() {
String r = "";
for (Url url in linkModel.urls) {
r = r + url.link + "<br/>" + url.description + "<br/><br/>";
}
write(r);
}
void write(String message) {
document.query('#status').innerHTML = message;
}
}
void main() {
WebLink webApp = new WebLink();
webApp.linkModel.createUrls();
webApp.displayUrls();
}
The web page (WebLink.html) has a title (html) and a list of web links with their descriptions (js).
<html>
<head>
<title>WebLink</title>
</head>
<body>
<h1>Web Links</h1>
<h2 id="status">dart is not running</h2>
<script type="text/javascript" src="WebLink.dart.app.js"></script>
</body>
</html>
The application is created and run in the Dart Editor.
The following is the content of the web page in Chrome:
