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Revision as of 12:58, 23 November 2009 by tapla (Talk | contribs)

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Adding a Guarana UI button on a web page

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Article Metadata
Tested with
Devices(s): Nokia N97
Compatibility
Platform(s):
Symbian
Article
Created: (23 Nov 2009)
Last edited: tapla (23 Nov 2009)

Overview

This code snippet demonstrates how to add a button on a web page using Guarana UI components. You can download the component library from Forum Nokia. The button component requires the following files from the library:

  • lib/jquery/jquery.js
  • src/core.js
  • src/defaults.js
  • src/dom.js
  • src/util.js
  • src/widget.js
  • src/button.js
  • themes/nokia/base/base.css
  • themes/nokia/base/button.css
  • themes/nokia/base/custom.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_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)

Source: Relevant HTML components

<head>
<!-- JS4WRT style sheets -->
<link rel="stylesheet" href="style/themes/nokia/base.css" type="text/css" media="screen">
<link rel="stylesheet" href="style/themes/nokia/button.css" type="text/css" media="screen">
<link rel="stylesheet" href="style/themes/custom-theme/ui.all.css" type="text/css" media="screen">
 
<!-- JS4WRT scripts -->
<script type="text/javascript" src="lib/jquery/jquery.js" charset="utf-8"></script>
<script type="text/javascript" src="lib/js4wrt/core.js" charset="utf-8"></script>
<script type="text/javascript" src="lib/js4wrt/dom.js" charset="utf-8"></script>
<script type="text/javascript" src="lib/js4wrt/util.js" charset="utf-8"></script>
<script type="text/javascript" src="lib/js4wrt/widget.js" charset="utf-8"></script>
<script type="text/javascript" src="lib/js4wrt/button.js" charset="utf-8"></script>
</head>
<body>
<div id="bodyContent" class="bodyContent">
<!-- A regular push button -->
<span id="btnPush"></span>
<!-- A toggle button -->
<span id="btnToggle"></span>
</div>
</body>

Source: JavaScript

// Initializes the widget
function init() {
window.btnPush = new Nokia.Button({
element: "#btnPush",
label: "Push me!",
click: function() { printString("Thank You!"); }
});
}

To disable the button, call the disable() function:

// Disable the push button
window.btnPush.disable();

To create a toggle button, use the keeppressed attribute:

// Initializes the widget
function init() {
window.btnToggle = new Nokia.Button({
element: "#btnToggle",
keeppressed: true,
label: "Pressed",
pressed: true,
width: 90,
press: function() {
this.setLabel("Pressed");
},
unpress: function() {
this.setLabel("Unpressed");
}
});
}

The press() and unpress() functions above are called when the button is toggled and untoggled, respectively. The constant width attribute ensures that the width of the button is not changed when its label is changed.

Postconditions

A Guarana UI button is added on the web page.

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.

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