Windows8.1 html5 dev paradigm discussion netponto

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Windows 8.1 with HTML5/JS
Alexandre Marreiros

44ª Reunião Presencial @ LISBOA
DateTime.Parse(“18-01-2014", new CultureInfo("pt-PT"));

hashtag #netponto

About / Contact
Alexandre Marreiros
Who
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–
–
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CTO @ Innovagency
Software Dev/Arch as Independent
Technical Trainer and Speaker as Independent
Technical Writer
UX Consultant
Lecturer@ EDIT

Contact
– amarreiros@gmail.com
– @alexmarreiros
– Digitalmindignition.com

Agenda
– Windows 8.1 Platform / API
– Windows 8.1 Tech view HTML 5 vs XAML
– Windows 8.1 And Windows Phone 8
– Windows 8.1 Tech view HTML

Windows 8.1 APIS

http://msdn.microsoft.com/en-us/library/windows/apps/bg182410.aspx

Windows 8.1 Store Apps Platform

Windows 8.1 & Windows Phone 8

http://www.bubblews.com/news/1730683-microsoft-to-combine-their-windows-8-and-windows-phone-app-stores


MSDN Magazine

Sharing technique

Separate UI and app logic using the Model-ViewViewModel pattern
Share functionality using Portable Class Libraries
Share code with Add as Link

Share using Windows Runtime Components

Sharing XAML UI

Conditional compilation with preprocessor directives

When to use

This guidance is applicable to many app types, but particularly to apps that have a XAML UI.
Separation allows you to write the app logic and to concentrate on user experience design
separately. An added benefit is that your app logic is more likely to be common for your app on
both platforms, and therefore is a great candidate for code sharing using the rest of the
techniques described here. Model-View-ViewModel (MVVM) is a great way to achieve this
separation.
Windows Phone 8 and Windows 8 share the same .NET Framework engine. In a XAML app, most
of your app logic will be written in managed code. If you are using the MVVM design pattern, you
have the potential to share your viewmodel and potentially your model. Note that Portable Class
Libraries are a .NET Framework concept and don’t support C++.
Use this technique for code that is non-portable and therefore can’t be implemented in a
Portable Class Library. For example, Windows Phone 8 and Windows 8 can use the common
Windows Runtime API surface to harness the power of each platform for networking, proximity,
in-app purchase, and many other features. Portable Class Libraries don’t support Windows
Runtime API. Instead, you can abstract this non-portable code, which is common to both
platforms, into a class that can be shared using Add as Link in Visual Studio. In C++ projects files
are added to projects as linked files by default.
In addition to consuming the common Windows Runtime API available on both platforms, you
can write your own Windows Runtime Component to make your functionality available in all
supported languages. This can be written in C++ and consumed by C# or VB. This is a very useful
technique for language interoperability or for when you want to write compute-intensive code in
C++ and use it in all languages.
The UI in Windows Phone 8 and Windows 8 is written in XAML. However, the XAML
implementations are not portable between the platforms. But you can isolate some of your
custom basic UI building blocks into UserControls and share those classes as linked files that will
be compiled for each platform. This technique is limited and should be used only for simple,
reusable parts of your UI. The core of your UI should be built and tailored separately for each
platform.
If you have functionality that’s implemented differently for Windows Phone 8 and Windows 8,
you can use conditional compilation to compile the code suitably for each platform. You can’t use
conditional compilation in a Portable Class Library.

Windows Phone 8

View technologies

Windows 8.1


WP 8 APP

W 8 APP based on
HTML 5


But today we will not talk about responsive or cross device development or pattern’s, just want that you
keep in mind that there are diferences and even if we want a ap for wp and windowa we can still use HTML
5 in Windows. Becouse even using xaml we may not have/want a total app reuse.

Windows 8.1 With HTML
“It also means that you’ll be able to leverage existing investments in JavaScript libraries and CSS
template repositories: writing a native app doesn’t force you to switch frameworks or engage in
expensive porting work. That said, it is also possible to use multiple languages to write an app,
leveraging the dynamic nature of JavaScript for app logic while leveraging languages like C# and
C++ for more computationally intensive tasks”

Kraig Brockschmidt

- Reuse already tested front end code ( Forms, animations);
- Explore CSS, HTML & JS flexibility
- Reuse KB from the past

- Adoption in app development of Professionals with a estetical, UX and
ergonomic sense

Other platforms that run HTML and JavaScript
native:
• FirefoxOS
• WebOS

Windows8.1 html5 dev paradigm discussion netponto

Popular features of CSS 3 are well supported in Windows 8.1

Popular features of HTML 5 are well supported in Windows 8.1


Windows

HTML 5 based Windows
Store Apps Container

WINJS is a collection of toolkits to make building Windows Store apps fast and
easy

Windows 8 app

Windows 8.1 app

WinJS 1.0

WinJS 2.0

WinJS controls declaration
<div id="calendar" data-win-control="WinJS.UI.DatePicker"></div>

 Declarative Way
WinJS controls are divs with
atributtes that are processed
when the processall method
runs.

In the HTML File
<div id="calendarDiv" ></div>
In th JS file
var calendarDiv = document.getElementById("calendar");
var calendarctrl = new WinJS.UI.DatePicker(calendarDiv);

 Imperative Way

We can use any javascript framework once she
run on Internet Explorer 11

Visual Studio offers a set of template to make easy to start a project

Visual Studio project struture
WINRT library instaciated directly by
the app

CSS Libraries for the Windows store
app
Windows Store App Images

JavaScript

App certify
App Manifest

WinJS 2.0 what’s new

Improved Controls

Infrastructure

• List view

• Scheduler

• App bar

• Dispose model
• Async debugging

New Controls

Building Blocks

• Hub

• Binding template

• Navigation bar

• Repeater

• Search box

• Item Container

• Back button


Conider the declaration of a list


Define the list Template

• ListView Changes
• Hub Control

• WebView Control
Are 3 controls that worth also a view let’s see this 3 in
action


Prior to Windows 8.1 you only had Iframes as a way to embeb external sites
Full reference about WebView http://blogs.windows.com/windows/b/appbuilder/archive/2013/07/17/what-snew-in-webview-in-windows-8-1.aspx

Recomended

Article for the ones starting to debug Windows 8 .1 HTMl store APPs with visual Studio 2013

http://msdn.microsoft.com/en-us/library/windows/apps/hh441474(v=vs.120).aspx

References
- Programming Windows Store Apps With HTML, CSS and Javascript Second Edition, Microsoft Press
- Windows 8.1 Controls - Windows Store Apps with HTML5 Refresh (http://www.youtube.com/watch?v=Drkh8Pb2li4)
- HTML Controls for Windows Store APPS (http://msdn.microsoft.com/en-us/library/windows/apps/bg182879.aspx)
- API changes for Windows 8.1 (http://msdn.microsoft.com/en-us/library/windows/apps/dn263112.aspx)
- Windows Dsev Center (http://msdn.microsoft.com/en-US/windows/apps/br211386)
- Windows 8.1 Store apps starter pack with canonical samples (http://code.msdn.microsoft.com/windowsapps/Windows-8Modern-Style-App-Samples)
- Building Windows Store 8.1 apps using HTML, CSS and JavaScript @Channel 9
(http://channel9.msdn.com/Events/TechDays/TechDays-13-Basel/Building-Windows-Store-8-1-apps-using-HTML-CSS-andJavaScript)
Onlne Live event : Windows 8.1 Developer Training: Geek Edition @ Microsoft Academy
(http://www.microsoftvirtualacademy.com/liveevents/windows-8-1-developer-training-geek-edition#?fbid=E0I-ctThA1I)

Contacts
– amarreiros@gmail.com
– @alexmarreiros
– Digitalmindignition.com

http://www.sprintfeed.com/2011/10/introducing-its-your-turn/

Questions

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Windows8.1 html5 dev paradigm discussion netponto

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