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Mihai Tataran - Building Windows 8 Applications with HTML5 and JS
1. Building Windows 8 Applications
with HTML5 and JS
Mihai Tătăran
General Manager, Avaelgo
Microsoft MVP
mihai.tataran@hpc-consulting.ro
www.codecamp.ro
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2. About
• Owner, GM – Avaelgo (ex H.P.C.
Consulting)
– Custom software development
– Consulting / training
• Microsoft MVP
• .NET community: www.codecamp.ro
http://itcamp.ro
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3. Objectives
• Download and play with Windows
8 and VS 2011 Previews and SDK
• Understand what you need to add
upon your HTML 5 skills to build
Windows 8 Metro apps
– Migrating apps
– New apps
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4. Agenda
• Basic Metro apps
• WinJS, Controls
• Windows 8 platform
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5. HTML 5 and Javascript
• HTML5
• Indexed DB
• App Cache
• Web Workers
• Canvas
• SVG
• FormData
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7. Metro apps
• Only the HTML5 DOCTYPE
• Single window
• All the device’s screen
• Access to Windows Runtime
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8. Metro apps: runtime
HTML Host Process
App Code
App Container
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9. Demo
• Simple app from scratch
• Anatomy of an HTML5 app
• Packaging and execution environment
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10. Agenda
• Basic Metro apps
• WinJS, Controls
• Windows 8 platform
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11. WinJS
• The library for Metro style apps
• Matches the Windows Metro design style
• Designed for touch as well as traditional
input
• Scales across form factors
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12. UI Controls
• Designed for touch, mouse, keyboard
• Everyday widgets
• Text editing
• Scrolling content
• Presenting data
• Commanding surfaces
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13. Everyday widgets - custom styled
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14. Text editing controls - behaviors
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17. Demo (SDK)
• UI Animation Sample
• ListView interaction model sample
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18. Agenda
• Basic Metro apps
• WinJS, Controls
• Windows 8 platform
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19. Process states
App
launch
Splash
screen
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20. Suspend state
• No CPU, Disk or Network consumed
• All threads are suspended
• Apps remain in memory
• Apps instantly resumed from suspend
when brought to foreground
• Exception: Background tasks
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21. Termination
• System needs more memory
• User switch occurs
• System shutdown
• Apps crash
• Application is not notified
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22. Saving state
• sessionState in WinJS
• Windows.Storage.ApplicationData to save
application state
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23. Saving / restoring state
Scenario You should….
User is using your App Save user data incrementally
App switched away from Save where the user is – what screen they are
(Suspending) on, for example
Not running App launched Bring the user back and restore their session as
by user (Activated) if they never left
Suspended App launched Do nothing
by user (Resuming)
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24. Charms
• Some kind of Start Bar
• Ideal manner to use device’s settings
• Or any other app specific settings
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25. Share contracts
• Predefined contracts in Metro
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26. Demo
• App Bar (from SDK)
• Windows 8 application states
• Charms (Printing; Custom: Application Setting)
• Share contracts (Share Dest app from SDK)
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27. Web Workers(*)
Document Object
(HTML Elements, CSS)
Objects Attached To The
Objects Attached To The Window Window
(XMLHttpRequest, Navigator, (XMLHttpRequest, Navigator,
Location Location
Indexed Database, Web Sockets) Indexed Database, Web
Sockets)
Worker Global Scope Object Window Object
JavaScript Engine JavaScript Engine
Web Worker UI Thread
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28. Demo
• Web Workers
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29. Resources
• Build Conference:
http://www.buildwindows.com/
• Metro Style applications resources:
http://msdn.microsoft.com/en-
us/windows/apps/
• Windows 8 Developer Preview:
http://msdn.microsoft.com/en-
us/windows/apps/br229516/
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30. Objectives
• Download and play with Windows
8 and VS 2011 Previews and SDK
• Understand what you need to add
upon your HTML 5 skills to build
Windows 8 Metro apps
– Migrating apps
– New apps
Premium conference on Microsoft’s Dev and ITPro technologies @itcampro / #itcampro
31. Misc
• ITCamp 2012: www.itcamp.ro
• Cursuri / Workshops
– Publice
– Azure, HTML 5, ASP.NET MVC, Silverlight,
Entity Framework, etc
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