org.symbian.wrttools.doc.WRTKit/html/WRTKit_Travel_Companion_Tutorial-GUID-be79ba64-fa03-4968-964e-d7dcc42d7053.html
--- a/org.symbian.wrttools.doc.WRTKit/html/WRTKit_Travel_Companion_Tutorial-GUID-be79ba64-fa03-4968-964e-d7dcc42d7053.html Fri Mar 05 19:11:15 2010 -0800
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-<html lang="en" xml:lang="en">
-<head>
-<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
-<meta name="copyright" content="(C) Copyright 2005" />
-<meta name="DC.rights.owner" content="(C) Copyright 2005" />
-<meta content="concept" name="DC.Type" />
-<meta name="DC.Title" content="Travel Companion" />
-<meta scheme="URI" name="DC.Relation" content="WRTKit_Tutorials-GUID-506c11e3-e6f3-43ec-9495-fcfa638b7e08.html" />
-<meta scheme="URI" name="DC.Relation" content="WRTKit_Travel_Companion_planning_the_widget-GUID-891068c7-c802-4da7-8674-8e8292aef7eb.html" />
-<meta scheme="URI" name="DC.Relation" content="WRTKit_Travel_Companion_user_interface-GUID-989d17cc-f019-46bb-b6f5-49166e258aca.html" />
-<meta scheme="URI" name="DC.Relation" content="WRTKit_Travel_Companion_functionality-GUID-384f2430-3de9-4006-ac8e-86c5774c3a79.html" />
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-<meta content="en" name="DC.Language" />
-<link href="commonltr.css" type="text/css" rel="stylesheet" />
-<title>
-Travel Companion</title>
-</head>
-<body id="GUID-BE79BA64-FA03-4968-964E-D7DCC42D7053"><a name="GUID-BE79BA64-FA03-4968-964E-D7DCC42D7053"><!-- --></a>
-
-
-
- <h1 class="topictitle1">
-Travel Companion</h1>
-
- <div>
-
- <p>
-
- If you've completed the Hello World and RSS Reader tutorials and feel that you
- understand them well but still want to learn more, then this tutorial is for you!
- The Travel Companion widget that we will create in this tutorial is something that
- would be very useful for anyone who travels a lot. It's a widget that offers many
- helpful features for travellers: a world clock that allows the user to simultaneously
- follow the time at home and at the destination, a 5-day weather forecast for the
- destination city and the current weather for both the home and destination cities,
- a currency converter, and a summary of the current news headlines.
- </p>
-
- <p>
-
- But because this tutorial is about using the WRTKit for developing widget user interfaces
- we will not implement all the code that is required to actually carry out all the
- functionality that was described above. Instead we will have a Travel Companion "engine"
- that will provide all these services for us so that we can focus on the user interface.
- The engine that we will use (that has been created for this example) is a mock engine,
- meaning that it mimics what the real Travel Companion engine would do, but actually it
- just returns hard coded weather forecasts and exchange rates. That's all we need for this
- tutorial, but after you've created the widget you can modify the engine so that it
- actually fetches news headlines, currency exchange rates and weather forecasts from
- various data sources online. There are plenty of free services that you can integrate to.
- And here's the best part: because we will implement the user interface so that it's
- cleanly separated from the engine, you won't have to change a single line of the user
- interface code after you change the engine to use real world data!
- </p>
-
- <p>
-
- Our widget will have no less than five views: one main view, three functional views and
- a settings view. The main view exists purely for navigational purposes. Because the widget
- is so complex we want to give the user an overview of what's available and an easy way of
- getting to everything. The three functional views include an information view that gives
- the user the most important information in a single glance, a currency converter view,
- and a five day weather forecast view. And finally the settings view lets the user configure
- the home and local cities, daylight saving time and temperature unit (Celsius or
- Fahrenheit) to use in the weather forecast.
- </p>
-
- <p>
-
- The tutorial will teach several important things. First of all, we'll learn how to
- create widgets that have multiple views. Second, we'll learn how to separate the code
- in the widget so that the user interface doesn't need to know anything about how the
- business logic works, and vice versa. Third, we'll create a navigational view using
- the NavigationButton control. Fourth, we'll customize the look of the widget to include
- a logo for our application in the list view caption area. And finally, we'll learn how
- to update the content in the user interface using a timer. We'll use the timer to keep
- the world clock, weather forecast and news headlines up to date. This is very important
- because widgets are often used so that the user starts them and then just keeps them
- running for days on end. If we didn't refresh the user interface then the information
- would quickly get old and the user would be forced to do manual refreshes.
- </p>
-
- </div>
-
-<div>
-<ul class="ullinks">
-<li class="ulchildlink"><strong><a href="WRTKit_Travel_Companion_planning_the_widget-GUID-891068c7-c802-4da7-8674-8e8292aef7eb.html">Planning the widget</a></strong><br />
-</li>
-<li class="ulchildlink"><strong><a href="WRTKit_Travel_Companion_user_interface-GUID-989d17cc-f019-46bb-b6f5-49166e258aca.html">Travel Companion user interface</a></strong><br />
-</li>
-<li class="ulchildlink"><strong><a href="WRTKit_Travel_Companion_functionality-GUID-384f2430-3de9-4006-ac8e-86c5774c3a79.html">Functionality</a></strong><br />
-</li>
-</ul>
-
-<div class="familylinks">
-<div class="parentlink"><strong>Parent topic:</strong> <a href="WRTKit_Tutorials-GUID-506c11e3-e6f3-43ec-9495-fcfa638b7e08.html">WRTKit Tutorials</a></div>
-</div>
-</div>
-
-</body>
-</html>
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