Win8 on Intel Programming CourseModern UI HelloWorld in HTML5/JS

Cédric Andreolliwww.Intel-Software-Academic-Program.com

paul.guermonprez@intel.comIntel Software

2013-03-20

Modern UI Coding

Technologies availableJavascript/HTML5C#/XAMLC++Visual Basic

Modern UI Coding

What will be coveredJavascript/HTML5The course is based on Visual Studio 2012

LabA detailed lab is available in the ZIP file,with a doc file and sources.

Visual Studio 2012

Modern UI Hello World

VS 2012 New projectFile > New > ProjectSelect “Blank app” and enter an app name (“HelloWorld” ?)

Modern UI Hello World

VS 2012 main window layout“Run” at the top, code at the center,solution explorer on the right

Modern UI Hello World

VS 2012 solution = 1 or more projects

Manifest

Manifest

WhatThe manifest collect informationabout the applicationIt's a XML documentContainsThe application's nameThe application's logoOS supported versionsApplication startup page, …

Manifest

Manifest

Manifest

What to rememberDefines the start page !Place to add new capabilities(webcam, microphone, etc)Information about your applications

Resources

Resources

Why resources ?It’s a very good practice is to avoid putting text strings directly into the code : use a resource file insteadYour app will be easy to maintain and translate

Here’s howCreate a directory named “strings” in your projectCreate a subfolder named “en-US”in the new “strings” folderCreate a new Resources filein the new “en-US” folder

Resources

Resources

Resources

Resources

Start page

Start page

A start page called « default.html »D

Start page

The « default.html » fileHTML5 formatIt's a good practice to associate a HTML filewith a javascript file and a CSS fileThe default.html file is associatedwith js/default.js and css/default.css

Start page

Anatomy of the « default.html » HTML5 file

Start page

Vue and ControllerThe HTML5 is used to design the app window (Vue)It's possible to add texts, buttons, and a lot of other featuresEach element can be associated with handlers written in javascript (Controller)

Start page

Let’s add some elements to the home pageA titleA text input and its associated labelA submit buttonA paragraph area to display some text

File to modifyResources file for user visible readable stringsStart page HTML5 file to add the elementsJavascript file to add the desired behavior

Resources and HTML

Resources : strings/en-US/resources.resjon

HTML5 Start page : default.html

Resources and HTML

StringsStrings are in the resources file, in JSON format, associated with keysKeysKeys are used in the HTML5 file instead of the stringsdata-win-resYou must use the data-win-res attribute in the HTML5, in the tag, or as a span markup

Analysing the Javascript

JavascriptInsert the code for the behavior before “app.start();”

Editing the Javascript

First load resources from Javascript

Editing the Javascript

Then change the onactivated handler

Editing the Javascript

setPromiseWill display the splash screen as long as necessaryWinJS.UI.processAll Will scan the associated HTML documentgetElementById(“send”)Will retrieve the send button in the UIaddEventListenerWill add a listener to the button

Editing the Javascript

Add the handler before app.start()

Launch HelloWorld

Click the Play button

Next steps

Next steps

HelloWorld detailed labWe propose you open the associated lab (doc file) and code HelloWorld yourself.

Plus/Minus appOn top of HelloWorld, you’ll find a slightly more complex example using the same technology, the Plus/Minus app.

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