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Adding a Guarana UI busy indicator on a web page

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Article Metadata
Code ExampleTested with
Devices(s): Nokia N97, Nokia 5800 XpressMusic
Compatibility
Platform(s):
Symbian
Article
Created: tapla (23 Nov 2009)
Last edited: hamishwillee (05 Oct 2012)

Contents

Overview

This code snippet demonstrates how to add a busy indicator on a web page using Guarana UI components. The busy indicator looks like this:

Guarana busy icon.jpg

You can download the component library from Guarana UI: a jQuery-Based UI Library for Nokia WRT.

Source: Relevant HTML components

<head>
<!-- Guarana UI style sheets -->
<link rel="stylesheet"
href="style/themes/themeroller/default-theme/ui.all.css"
type="text/css" media="screen">
 
<!-- Guarana UI scripts -->
<script type="text/javascript" src="lib/jquery/jquery.js"
charset="utf-8"></script>
<script type="text/javascript" src="lib/guarana/defaults.js"
charset="utf-8"></script>
<script type="text/javascript" src="lib/guarana/core.js"
charset="utf-8"></script>
</head>
<body>
<div id="bodyContent" class="bodyContent">
<div id="busyIndicatorContainer"></div>
</div>
</body>

Source: Relevant CSS declarations

#busyIndicatorContainer {
position: absolute;
top: 50%;
left: 50%;
width: 0;
height: 0;
}

Source: JavaScript

// Initializes the widget
function init() {
createMenu();
 
window.busyIndicator = new Nokia.Busy({
element: "#busyIndicatorContainer",
autoOpen: false
});
}
 
// Executes the snippet.
// Shows the busy indicator and hides it after 2 seconds.
function executeSnippet() {
window.busyIndicator.show();
setTimeout(function() {
window.busyIndicator.hide();
}, 2000);
}

The executeSnippet() function above shows the busy indicator (the show() method) and hides it after 2 seconds (the hide() method).

Note: The busy indicator component requires the following files from the library:

  • lib/jquery/jquery.js
  • src/core.js
  • src/defaults.js
  • src/dom.js (implicitly loaded by core.js)
  • src/util.js (implicitly loaded by core.js)
  • src/device.js (implicitly loaded by core.js)
  • src/animation.js (implicitly loaded by core.js)
  • src/widget.js (implicitly loaded by core.js)
  • src/busy.js (implicitly loaded by core.js)
  • themes/nokia/base/base.css (implicitly loaded by core.js)
  • themes/nokia/base/busy.css (implicitly loaded by core.js)
  • themes/nokia/base/images/busyindicator.gif (from busy.css)
  • themes/nokia/base/images/shadow.png (from base.css)
  • themes/nokia/base/images/shadow-c.png (from base.css)
  • themes/nokia/base/images/shadow-lr.png (from base.css)
  • themes/themeroller/default-theme/ui.accordion.css
  • themes/themeroller/default-theme/ui.all.css
  • themes/themeroller/default-theme/ui.base.css
  • themes/themeroller/default-theme/ui.core.css
  • themes/themeroller/default-theme/ui.theme.css
  • themes/themeroller/default-theme/images/ui-bg_diagonals-thick_10_444444_40x40.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-bg_flat_0_000000_40x100.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-bg_glass_20_9f1504_640x400.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-bg_glass_40_8ab61c_640x400.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-bg_glass_55_8ab61c_640x400.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-bg_glass_100_c2cba5_640x400.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-bg_highlight-hard_80_ededed_640x100.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-bg_highlight-soft_100_ededed_640x100.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-icons_89bf43_256x240.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-icons_97B72B_256x240.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-icons_222222_256x240.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-icons_e3bfb5_256x240.png (from ui.theme.css)
  • themes/themeroller/default-theme/images/ui-icons_ffffff_256x240.png (from ui.theme.css)

Postconditions

A busy indicator is shown on the web page and hidden after 2 seconds.

See also

Supplementary material

This code snippet is part of the stub concept, which means that it has been patched on top of a template application in order to be more useful for developers. The version of the WRT stub application used as a template in this snippet is v1.2.

This page was last modified on 5 October 2012, at 08:54.
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