Swapping a Template in Windows Store App

Introduction

In this article I describe how to create Windows Store Apps for swapping a template using JavaScript. To change the List View control's template, set its item template property to the declarative template or templating function you want to use instead.

I assume you can create a simple Windows Store App using JavaScript; for more help visit Simple Windows Store Apps using JavaScript.

To start the creation of the apps, add one JavaScript page by right-clicking on the js folder in the Solution Explorer and select "Add" > "New item" > "JavaScript Page" and then provide an appropriate name. In the same way, add a HTML page to your project.

Write the following code in the default.html:

<!DOCTYPE html>

<html>

<head>

</head>

</div>

</center>

</body>

</html>

Write the following code in the default.js:

(function () {

"use strict";

var appTitle = "";

var pages = [

{ url: "page.html" }

];

function activated(eventObject) {

if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) {

eventObject.setPromise(WinJS.UI.processAll().then(function () {

var url = WinJS.Application.sessionState.lastUrl || pages[0].url;

return WinJS.Navigation.navigate(url);

}));

}

WinJS.Navigation.addEventListener("navigated", function (eventObject) {

var url = eventObject.detail.location;

var host = document.getElementById("contentHost");

host.winControl && host.winControl.unload && host.winControl.unload();

WinJS.Utilities.empty(host);

eventObject.detail.setPromise(WinJS.UI.Pages.render(url, host, eventObject.detail.state).then(function () {

WinJS.Application.sessionState.lastUrl = url;

}));

});

WinJS.Namespace.define("App", {

appTitle: appTitle,

pages: pages

});

WinJS.Application.addEventListener("activated", activated, false);

WinJS.Application.start();

})();

Write the following code in the page.html:

<!DOCTYPE html>

<html>

<head>

</head>

<body>

<button id="swapTemplateButton" class="action">Swap item template</button>

</div>

</div>

</div>

<div id="listView"

class="win-selectionstylefilled"

data-win-control="WinJS.UI.ListView"

data-win-options="{

itemDataSource: myData.dataSource,

itemTemplate: regularListIconTemplate,

selectionMode: 'none',

tapBehavior: 'none',

swipeBehavior: 'none',

layout: { type: WinJS.UI.GridLayout }

}">

</div>

</body>

</html>

Write the following code in the script.js:

(function () {

"use strict";

var page = WinJS.UI.Pages.define("page.html", {

ready: function (element, options) {

var listView = element.querySelector("#listView").winControl;

listView.forceLayout();

listView.itemTemplate = regularListIconTemplate;

var CurrentTemplate_regularListIconTemplate = true;

function swapTemplate() {

if (CurrentTemplate_regularListIconTemplate) {

listView.itemTemplate = regularListIconTextTemplate;

CurrentTemplate_regularListIconTemplate = false;

} else {

listView.itemTemplate = regularListIconTemplate;

CurrentTemplate_regularListIconTemplate = true;

}

element.querySelector("#swapTemplateButton").addEventListener("click", swapTemplate, false);

}

});

})();

var myData = new WinJS.Binding.List([

{ title: "Samsung", text: "Samsung", picture: "images/1.jpg" },

{ title: "Nokia", text: "Nokia", picture: "images/2.jpg" },

{ title: "Apple", text: "Apple", picture: "images/3.jpg" },

{ title: "Macromax", text: "Nokia", picture: "images/4.jpg" },

{ title: "Samsung", text: "Samsung", picture: "images/1.jpg" },

{ title: "Nokia", text: "Nokia", picture: "images/2.jpg" },

{ title: "Apple", text: "Apple", picture: "images/3.jpg" },

{ title: "Macromax", text: "Nokia", picture: "images/4.jpg" }

]);

Output:

Summary

In this article I described how to create a Windows Store App for swapping a template using JavaScript. I hope this article has helped you to understand this topic. Please share it. If you know more about this, your feedback and constructive contributions are welcome.