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option). 65 This is demonstrated in Scenario 3 of the sample. In addition, there are a few other methods to work with a specific SecondaryTile instance: • requestDeleteAsync and requestDeleteForSelectionAsync Direct analogs, with the same placement variations, to the requestCreate* methods, as deletion of a secondary tile (unpinning) is also subject to user consent. This is demonstrated again in Scenario 2 and 7 of the sample. • updateAsync Propagates any changes made to the SecondaryTile properties since it was added to the Start screen. This is demonstrated in Scenario 8 of the sample. If you’ve been keep score throughout this section, you might have noticed that I’ve yet to mention Scenario 6 of the sample. That’s because it shows how to make a secondary tile into a live tile with updates. To understand that, we need to look at updates more generally because the mechanisms involved apply to all tiles alike. This just so happens to be the next topic in this chapter—yes, I planned it that way! Basic Tile Updates A local update for a tile, as described earlier in this chapter, is one that an app issues while it’s running. Clearly, this is one of the best times to issue updates because it’s highly likely that the app already has the information it needs for those updates to any of its tiles. In a number of cases—especially when an app is not related to a web service—the information needed for the app’s live tiles is available only while it’s running. A game, for example, can send updates showing best scores, new challenges, progress toward achievements, and other kinds of compelling invitations to re-engage with the app. (I must personally admit that this works quite well with the Fruit Ninja game.) The process of sending a local tile update is very straightforward using the APIs in the Windows.UI.Notifications namespace: • Create the XML payload, as it’s called, that describes the update within an XmlDocument object. The XML must always match one of the predefined tile templates. You can start with a system-provided XmlDocument, create it from scratch, or use the Notifications Extensions Library that provides an object model and IntelliSense for this. • Create a TileNotification object with that XML. The XML becomes the TileNotification object’s content property and can be set separately. • Optionally set the expirationTime and tag properties of the TileNotification. By default, a locally issued update does not expire and is removed only if it’s evicted by a newer update or explicitly cleared. Setting expirationDate will automatically remove it at that particular time. (Cloud-issued notifications automatically expire after three days.) The tag property is a string of 65 The SecondaryTile class also has a variant of findAllAsync that takes a different app name along with findAllFor-PackageAsync that’s described as enumerating secondary tiles for all apps in the same package. These were meant for packages that contain multiple apps, a feature that is not currently supported through the Windows Store. 576
16 or fewer characters that is used to manage the stack of updates that are cycled on the tile. More on this a little later. • Call TileUpdateManager.createTileUpdaterForApplication to obtain a TileUpdater object that’s linked to your app tile; call TileUpdateManager.createTileUpdater-ForSecondaryTile (chew on that name!) to obtain a TileUpdater object for a secondary tile with a given tileId. • Call TileUpdater.update with your TileNotification object. (The animation used to bring the update into view is similar to WinJS.UI.Animation.createPeekAnimation, as described in Chapter 11.) Tip If you issue tile updates or other notifications when your app is running, think about whether it’s also appropriate to issue updates within a resuming event handler if you aren’t going to use other means like periodic updates or push notifications to refresh the tile. It may have been a while since you were suspended, so being resumed is a good opportunity to send updates. Let’s turn now to the App tiles and badges sample for how updates appear in code. Because the Visual Studio simulator doesn’t enable live tiles and toast notifications, remember to run the sample with the Local Machine or Remote Machine options. Assuming that we have our update XMLDocument in a variable named tileXml, sending the update just takes two lines of code (see js/sendTextTile.js): var tileNotification = new Windows.UI.Notifications.TileNotification(tileXml); Windows.UI.Notifications.TileUpdateManager.createTileUpdaterForApplication() .update(tileNotification); and similarly for secondary tiles in Scenario 6 of the Secondary tiles sample (js/SecondaryTileNotification.js): var tileNotification = new Windows.UI.Notifications.TileNotification(tileXml); Windows.UI.Notifications.TileUpdateManager.createTileUpdaterForSecondaryTile( "SecondaryTile.LiveTile").update(tileNotification); The more interesting question is how we create that tileXml payload in the first place. This involves choosing one of the predefined visual tile templates and then choosing a method to create the XMLDocument. Then we’ll see how to use images with the updates along with considerations for branding. Localization and accessibility are additional concerns for tile updates, but we’ll return to that subject later in Chapter 17, “Apps for Everyone.” Choosing a Tile Template The first step in creating a tile update is to select an appropriate template from the Tile template catalog. Here you will find descriptions, images, and the exact XML for the 10 available square templates and the 36 available wide templates—yes, 46 different templates in all (so I hope you understand why I’m not showing them all here!). Some are text only, some are image only, some are text and image (wide tiles only), and then there are a number referred to as peek templates. These, if you look at them 577
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Table of Contents Introduction ....
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WinJS Tools for Pages and Page Navi
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Chapter 6: Layout .................
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Design Guidelines for Settings ....
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Manipulating Audio and Video ......
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Managing Secondary Tiles ..........
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The User Profile (and the Lock Scre
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The Windows Store APIs ............
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Introduction Welcome, my friends, t
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I'm also assuming that your interes
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Acknowledgements In many ways, this
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Support for developers, however, ca
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technologies, including DirectX, XA
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The upload process will walk you th
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FIGURE 1-2 A typical app page in th
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do this, I’m sure!). In a hotel,
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The app host is more or less Intern
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Sidebar: Mixed Language Apps Window
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When snapped, on the other hand, ap
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Capability Description Prompts for
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Taking a Break, Getting Some Rest:
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So you might say, “Well, I should
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that the user has to configure the
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Fortunately, the Windows Store dash
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graphics called for in the design s
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4. After Visual Studio churns for a
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Add-AppxDevPackage. That batch file
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package, whereas a single / refers
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QuickStart #1: Here My Am! and an I
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FIGURE 2-8 Snapped wireframe (left;
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which we’ll instantiate a Bing ma
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orientation, screen resolution, and
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FIGURE 2-12 Full-screen landscape v
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What this means is that, for the mo
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Create the map (though the namespac
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Next, in the second parameter to po
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FIGURE 2-17 Setting the Location ca
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Here we’re providing capturePhoto
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the contract is an abstraction that
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Extra Credit: Receiving Messages fr
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Note that such apps might not be ab
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Chapter 3 App Anatomy and Page Navi
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content and controls from web servi
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Such capabilities are blocked becau
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Can you do any kind of dynamic page
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appdata. This happens via Windows.S
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I don’t know about you, but I rea
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telling you to not use it! After al
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App Activation First, let me congra
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In the table, note that 80% scale t
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Activation Code Paths As we saw in
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splashScreen SplashScreen Contains
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In truth, so long as the user keeps
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Of course, setPromise ultimately do
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previousExecutionState values are d
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object to which you can add whateve
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Because we stored lastPosition in s
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FIGURE 3-9 The output of the Simple
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What about launching from the previ
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For all other details on this funct
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The Navigation App Template, PageCo
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(function () { "use strict"; WinJS.
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}, ); if (that.pageElement.winContr
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Sidebar: Helping Out IntelliSense I
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thousands of items, where tapping a
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Completing the Promises Story Whew!
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mechanism on top of singular XHR op
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The story of controls in Windows 8
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Creating or instantiating HTML cont
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Hyperlink href, target Link text L
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defined as part of the WinJS.UI nam
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Clearly, then, the bulk of the work
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var element = document.getElementBy
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This example is taken directly from
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FIGURE 4-7 Expanding a WinJS contro
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Flexbox -ms-[inline-]flexbox (value
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Note Though not shown here, you can
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For the ToggleSwitch, win-* classes
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• If a WinJS.UI.Tooltip is gettin
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Custom Control Examples To see thes
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Between calendar.js and calendar.cs
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]]> Whe
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This would be appropriate if you cr
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Two-way: essentially one-way bindin
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The code for this can be found in T
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Sidebar: Data-Binding Properties of
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Implementing Two-Way Binding To imp
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• oneTime A function that just lo
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• Windows 8 apps have rich stylin
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Collection Control Basics To seek t
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indingList: bindingList, array: arr
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Now while the ListView control in S
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The header template in html/scenari
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In the modified sample I changed na
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} return groupCompareGlobalized(lef
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a function instead of a declarative
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var list = new WinJS.Binding.List()
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data-win-options="{ itemDataSource:
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e used anywhere it’s appropriate,
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If you were to provide your own nav
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sample code in this chapter’s com
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Because of data binding, changes to
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What is does have, however, is this
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What you then do inside the element
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• The groups themselves are all s
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and the current viewable area. Thou
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Styling Following the precedent of
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Technically speaking, the layout pr
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or you can set layout.groupInfo fro
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Using the first item’s dimension
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You can set a breakpoint in this fu
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Incremental Loading Apart from pote
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The yellow bars indicate execution
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If it’s not provided (as when the
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During initialization (outside the
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Chapter 6 Layout Compared to other
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that appear when needed through app
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Within the body of content, then, W
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} -ms-grid-columns: 120px 2fr 80px
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-ms-scroll-snap-x Shorthand to comb
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WinRT: filled -ms-view-state: fille
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Handling View States As I just ment
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var mql = window.matchMedia("(-ms-v
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individual items in snapped view. B
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FIGURE 6-5 Options for display size
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If your developer sensibilities obj
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Content goes here This is really
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Such a layout is most easily achiev
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Because the specs themselves are st
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/* In CSS */ #divMain { width: 100%
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CSS styles that are supported for W
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Within the activated handler docume
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Multicolumn Elements and Regions Tr
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FIGURE 6-9 CSS region chains to flo
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Chapter 7 Commanding UI For consume
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• Commands that can’t be placed
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which provide many specifics on pla
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Tip To prevent the app bar from app
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This example doesn’t provide any
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var appbar = document.getElementByI
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• afterhide occurs immediately af
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This button’s click handler uses
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In the extraClass properties we’v
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To provide graphics of your own, do
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It should come as no surprise by
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Flyouts and Menus Going back to our
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are optional with show. (Note also
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function confirmOrder() { bought =
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The point of this last example is t
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Also, go into css/header-menu.c
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In the contextmenu handler menu.sho
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Scenario 3 is identical to Scenario
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The app bar now appears as follows,
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This message will appear if the use
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Chapter 8 State, Settings, Files, a
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while our permanent home was being
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• Account and profile configurati
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By the way, you might have some rea
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var localSettings = Windows.Storage
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It is also possible to migrate app
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Tip There are some file extensions
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Sidebar: Closing Streams vs. Closin
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Using App Data APIs for State Manag
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efore setting up new defaults. As m
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Roaming State The automatic roaming
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good idea to not be too aggressive
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Each app-supplied command can do on
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There are two ways to implement thi
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function helpCommandInvoked(e) { va
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Programmatically Invoking Settings
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Sidebar: Changes to Permissions A c
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Think about this for a moment (as I
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eturns an appropriate StorageFile o
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function pickSinglePhoto() { // Ver
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When picking multiple files, the re
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indicate a new filename in which to
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scenario oriented on the music libr
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A QueryOptions is generally created
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The setPropertyPrefetch method goes
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What We’ve Just Learned • State
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Chapter 9 Input and Sensors Touch i
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• Second, when you need to handle
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One or more fingers touch the scree
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You might notice a conspicuous abse
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Note that this method has no effect
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• TouchCapabilities Properties ar
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Tip Pointer events won’t fire if
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Properties Description currentPoint
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The first step to receiving gesture
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• MSGestureHold occurs when MSPoi
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FIGURE 9-3 A conceptual representat
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FIGURE 9-4 The Input Instantiable G
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obviously a specific deceleration m
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• Process keydown, keyup, and key
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For passwords you get a key to hide
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keyboard sample. 50 Adding listener
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Standard Keystrokes The last piece
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FIGURE 9-9 The Input Ink sample wit
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(string), and timestamp (Date) prop
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Like all other WinRT APIs, however,
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Here’s an example of such code fr
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Chapter 10 Media To say that media
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movie.controls = true; document.get
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declared inline, created dynamicall
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} document.getElementById("r").styl
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function onImageError(source) { sou
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• By copying pixel data from a vi
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It’s also helpful to understand t
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Video Element Extension APIs Beyond
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vid.msInsertVideoEffect("GrayscaleT
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elements with the same source. The
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in the background. As a developer,
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function soundLevelChanged() { //Ca
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Playing Sequential Audio An app tha
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need to bypass the audio element an
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To guarantee the ordering we use Pr
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Thumbnails First, StorageFile.getTh
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or combination of System.GPS.Longit
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} return degrees + "°" + minutes +
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Most of the displayImageUI function
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provides a specific BitmapEncoder i
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method can be called only once and
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Transcoding and Custom Image Format
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Transcoding happens either from one
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In Scenario 2, the sample always us
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Media Capture There are times when
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ecordLimitationExceeded Fired when
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} captureInitSettings.videoDeviceId
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} // Add the devices to deviceList
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Streaming from a Server and Digital
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Here’s how such apps generally wo
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Next you’ll want to wire up handl
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• WinRT provides a rich API for m
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necessary. In this way, excessive a
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The Control Panel setting can be ob
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screen; the Panel animations are fo
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want to chain or synchronize animat
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Create addToList animation. var add
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CSS Animations and Transitions As n
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Animations work in an opposite mann
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Keyframes, while typically defined
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FIGURE 11-2 Output of Scenario 3 of
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What’s more, requestAnimationFram
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Still, 20% is a lot of CPU power to
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Chapter 12 Contracts Recently I dis
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File activation (file type associat
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more specific. For instance, when a
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var dataPackageTitle = document.get
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The other interesting part of Scena
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When sharing an image, don't forget
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FIGURE 12-3 The Share content targe
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• Acknowledge user actions when y
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The key here is the args.detail.sha
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target app. If you’re using image
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FIGURE 12-7 Controls to create a qu
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The question is how to wire up comm
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The Search contract that makes this
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FIGURE 12-11 The Search declaration
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} } })); In the search activation p
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} }); Windows.ApplicationModel.Sear
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The request object also has a getDe
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Page 527 and 528: egistered for that type, rather tha
Page 529 and 530: At the very bottom of this UI you c
Page 531 and 532: ecord a new sound. In such cases, h
Page 533 and 534: Activation of a File Picker Provide
Page 535 and 536: Windows.ApplicationModel.Activation
Page 537 and 538: A final note is that a file picker
Page 539 and 540: }; // Create a file to provide back
Page 541 and 542: The next step for the provider is t
Page 543 and 544: FIGURE 12-18 The provider sample’
Page 545 and 546: FIGURE 12-21 The provider sample’
Page 547 and 548: • If the UI status is visible, sw
Page 549 and 550: Just as the file picker contract al
Page 551 and 552: Using the Contact Picker Contacts a
Page 553 and 554: } } }); Contact Picker Providers On
Page 555 and 556: As you can see, the homeEmail field
Page 557 and 558: Chapter 13 Tiles, Notifications, th
Page 559 and 560: FIGURE 13-1 The typical default Sta
Page 561 and 562: Selecting an item on the Start scre
Page 563 and 564: In many ways, live tiles might redu
Page 565 and 566: toss up lots of superfluous toast,
Page 567 and 568: Yet Windows doesn’t want to force
Page 569 and 570: The third way an app can issue upda
Page 571 and 572: Providing both square and wide stat
Page 573 and 574: • arguments A string that’s pas
Page 575: function activated(eventObject) { i
Page 579 and 580: Third, if you supply an image that
Page 581 and 582: arrive on a Windows 8 machine will
Page 583 and 584: The Notifications Extensions Librar
Page 585 and 586: The other bits of the manifest that
Page 587 and 588: In such cases it would be better to
Page 589 and 590: Windows.UI.Notifications.BadgeUpdat
Page 591 and 592: you’d use start time), or the pha
Page 593 and 594: Tip The tile and badge updaters are
Page 595 and 596: eturned from page requests, as we
Page 597 and 598: through the Web platform installer.
Page 599 and 600: Toast Notifications So far in this
Page 601 and 602: FIGURE 13-16 Issuing text toasts th
Page 603 and 604: supports addImageQuery for scale, l
Page 605 and 606: A scheduled toast is created using
Page 607 and 608: To update a tile, set a badge, or i
Page 609 and 610: Your app should go through this sho
Page 611 and 612: matter of sending an XmlHttpRequest
Page 613 and 614: In the running app, the pushnotific
Page 615 and 616: Background Tasks and Lock Screen Ap
Page 617 and 618: FIGURE 13-18 The manifest editor fo
Page 619 and 620: In this code, the BackgroundTaskBui
Page 621 and 622: var internetCondition = new backgro
Page 623 and 624: The Background task sample provides
Page 625 and 626: Note Working with the lock screen i
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Debugging Background Tasks By this
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• Periodic updates for tiles and
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Network Information and Connectivit
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networkstatuschanged event that we
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Note Windows Store apps written in
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Programmatically, as noted before,
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Although this option will not set u
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hundred kilobytes—if you know fro
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Finally, avoid using XHR for large
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Starting a download transfer happen
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There is also a variation of create
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operations—it is possible to crea
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); "form-data", "------------------
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Basically, you would change the pol
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Authentication, Credentials, and th
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The result from pickAsync, as given
Page 659 and 660:
To clarify the relationship between
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There is one subtle difference betw
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Within the web authentication broke
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https://www.facebook.com/dialog/oau
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Single Sign On with Live Connect Be
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setAccountPicturesAsync (for provid
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And lastly it’s worth at least li
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} var scenario1Link = document.getE
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} return currentFeed.items[currentI
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When data arrives, the handler rece
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} // This is a helper function echo
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On the client side, StreamSocket ag
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And closing the socket in Scenario
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In the sample, we first create a Me
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} try { var size = dataWriter.measu
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What We’ve Just Learned • Netwo
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• Connecting with devices in the
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The XInput and JavaScript controlle
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function renderLoop() { var state =
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FIGURE 15-3 Sample device enumerati
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The Removable Storage sample, in Sc
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• Communications are supported on
Page 703 and 704:
Advertising a Connection Making you
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Tap to Connect and Tap to Activate
Page 707 and 708:
On a simpler note, publishing a URI
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FIGURE 15-5 Scenario 2 of the Print
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Print Document Sources No matter wh
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If you don’t add a handler for th
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The final bit to mention in the cod
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Indeed, when we speak of mixed lang
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Again, components can also make use
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Sidebar: WinRT Components vs. Class
Page 723 and 724:
Once you add the name of a class an
Page 725 and 726:
With the basic mechanics worked out
Page 727 and 728:
As we did with C#, let’s start by
Page 729 and 730:
Comparing the Results The Image Man
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} return sum; Running a count with
Page 733 and 734:
Component Implementation • When c
Page 735 and 736:
When this worker is started, the on
Page 737 and 738:
FIGURE 16-4 A promise manages and i
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Note that Task.Run does not support
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As with C#, there are additional st
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public IAsyncOperation ConvertPixel
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method called ConvertGrayscalFileAs
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Event names, on the other hand, are
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One challenge, as we saw in the qui
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The Building your own Windows Runti
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• Check against an encrypted lice
Page 755 and 756:
Chapter 17 Apps for Everyone: Acces
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Your App, Your Business If you chec
Page 759 and 760:
FIGURE 17-1 Creating an app package
Page 761 and 762:
desktop applications and distribute
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means is that if you want to promot
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You should also strongly consider m
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• In-app purchases through the Wi
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That said, WinRT provides for the f
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When your app accesses CurrentAppSi
Page 773 and 774:
} }); currentApp.licenseInformation
Page 775 and 776:
You won’t hit your breakpoint imm
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If you’re using a custom commerce
Page 779 and 780:
You might have noticed that a Produ
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Id=\"e2a62d42-dbca-43d2-b779-66eb91
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The latter two we’ve already cove
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• aria-label Directly provides te
Page 787 and 788:
Apart from the small bits of code i
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control sample, and switch between
Page 791 and 792:
Scenario 2 shows similar effects wi
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Canvas a better choice? To this poi
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one resource. For a few examples of
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addition of new string and image re
Page 799 and 800:
FIGURE 17-9 Control panel dialogs f
Page 801 and 802:
Formatting Culture-Specific Data an
Page 803 and 804:
Sorting and Grouping Just as a worl
Page 805 and 806:
With images, you can reverse them w
Page 807 and 808:
Note CSS files can contain string l
Page 809 and 810:
Manifest: Let’s turn now to the m
Page 811 and 812:
Other affected files in this app in
Page 813 and 814:
Sidebar: String Resources in Settin
Page 815 and 816:
the folder name itself doesn’t us
Page 817 and 818:
If you like, you can just send your
Page 819 and 820:
FIGURE 17-11 The Multilingual App T
Page 821 and 822:
Second, the Toolkit will detect if
Page 823 and 824:
Localization Wrap-Up Well, we’re
Page 825 and 826:
Let me say that again: all of this
Page 827 and 828:
Onboarding and Working through Reje
Page 829 and 830:
Connecting Your Website If you have
Page 831 and 832:
What We’ve Just Learned • An ap
Page 833:
What do you think of this book? We
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