| author | Eugene Ostroukhov <eugeneo@symbian.org> |
| Mon, 15 Mar 2010 17:19:53 -0700 | |
| changeset 266 | f0f78f7ebf4d |
| parent 230 | 7848c135d915 |
| permissions | -rw-r--r-- |
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<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
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<html lang="en" xml:lang="en"> |
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<head> |
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<meta content="text/html; charset=utf-8" http-equiv="Content-Type" /> |
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<meta name="copyright" content="(C) Copyright 2005" /> |
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<meta name="DC.rights.owner" content="(C) Copyright 2005" /> |
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<meta content="concept" name="DC.Type" /> |
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<meta name="DC.Title" content="Actions" /> |
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<meta scheme="URI" name="DC.Relation" content="WRTKit_Developing_widgets_using_the_WRTKit-GUID-a321db96-0a01-4e55-b24b-96905f40cb5c.html" /> |
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<meta content="XHTML" name="DC.Format" /> |
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<meta content="GUID-38771443-166B-4112-9569-C07229CD7449" name="DC.Identifier" /> |
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<meta content="en" name="DC.Language" /> |
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<link href="commonltr.css" type="text/css" rel="stylesheet" /> |
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<title> |
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Actions</title> |
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</head> |
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<body id="GUID-38771443-166B-4112-9569-C07229CD7449"><a name="GUID-38771443-166B-4112-9569-C07229CD7449"><!-- --></a> |
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<h1 class="topictitle1"> |
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Actions</h1> |
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<div> |
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<p> |
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Widgets can let users trigger actions in many ways. One way is by inserting menu |
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items in the Options menu, using the menu object that the S60 Web Runtime |
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defines. Another way is to use links that call JavaScript functions. Such links |
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could for example be included as part of content in a ContentPanel control. |
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Links belong more to web pages than widgets or applications, however, and are |
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not recommended except in cases when they result in a web URL being opened up in |
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a web browser (i.e. using the widget.openURL() method). |
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</p> |
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<p> |
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The third way is to use one of the WRTKit action controls: FormButton and |
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NavigationButton. Both controls are very similar in usage but differ greatly in |
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presentation and intended use. The FormButton control is meant to be used in |
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situations where pressing the button would result in some kind of process taking |
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place, e.g. settings being saved. The NavigationButton control is intended for |
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moving between views inside the widget, or other similar type of actions. |
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FormButton controls look similar to buttons in a PC application or "Submit"- |
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buttons on a web page. NavigatationButton controls don't really have a |
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counterpart in the PC application domain, but is common in mobile device |
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application that have large user interfaces that are split into several views. |
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</p> |
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<div class="fignone" id="GUID-38771443-166B-4112-9569-C07229CD7449__GUID-AC8282AE-227F-481A-8774-B3904AABDD9F"><a name="GUID-38771443-166B-4112-9569-C07229CD7449__GUID-AC8282AE-227F-481A-8774-B3904AABDD9F"><!-- --></a><span class="figcap">Figure 1. |
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NavigationButton controls</span> |
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<br /><img src="NavigationButton_Controls_Screenshot_1.png" /><br /> |
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</div> |
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<p> |
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In an email widget, NavigationButton controls could be used so that there would |
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be a "Folders"-view where each folder (e.g. Inbox, Sent, Trash, etc.) would have |
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a corresponding NavigationButton. Clicking on the button for a folder would open |
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up that folder in a new view. FormButton controls could be used for example in a |
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view that lets users write new emails to trigger sending of the written email. A |
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FormButton in a view like that could have "Send" as the button text. |
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</p> |
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<div class="fignone" id="GUID-38771443-166B-4112-9569-C07229CD7449__GUID-60F75AE9-DE96-4044-BAB4-BAB27F08A1D7"><a name="GUID-38771443-166B-4112-9569-C07229CD7449__GUID-60F75AE9-DE96-4044-BAB4-BAB27F08A1D7"><!-- --></a><span class="figcap">Figure 2. |
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FormButton controls</span> |
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<br /><img src="FormButton_Controls_Screenshot_1.png" /><br /> |
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</div> |
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<p> |
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The FormButton and NavigationButton controls fire events with the event type |
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"ActionPerformed" whenever a user presses the button. The event can be turned |
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into a function call to a callback function of the developer's choice by |
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registering the function to the control for the "ActionPerformed" event type. |
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This is done using the addEventListener() method that all controls inherit from |
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the UIElement base class. |
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</p> |
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</div> |
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<div> |
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<div class="familylinks"> |
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<div class="parentlink"><strong>Parent topic:</strong> <a href="WRTKit_Developing_widgets_using_the_WRTKit-GUID-a321db96-0a01-4e55-b24b-96905f40cb5c.html">Developing widgets using the WRTKit</a></div> |
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</div> |
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</div> |
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</body> |
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</html> |