<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

<!-- This component and the accompanying materials are made available under the terms of the License 

"Eclipse Public License v1.0" which accompanies this distribution, 

and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->

<!-- Initial Contributors:

    Nokia Corporation - initial contribution.

Contributors: 

-->

<!DOCTYPE concept

  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

<concept id="GUID-E7EFAD50-3323-49A6-A5D9-95B95F0FBF0E" xml:lang="en"><title>Preview

pop-up</title><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>Preview pop-up is a floating component used for displaying more detailed

data about an item that has focus in the main pane.</p>

<fig id="GUID-443FE00D-6678-4951-9038-07C82D10B69E">

<title>Preview pop-up</title>

<image href="GUID-02072A1B-6F60-457B-8F26-2B25A6EA7C5F_d0e67292_href.png" placement="inline"/>

</fig>

<p>The preview is displayed with a 0.6 second delay after the focus is moved

(for example, scrolling down a list with the Arrow keys) to avoid too rapid

and continuous flicker. The default time-out for closing the preview pop-up

is the same as for the Information pop-up, but it is possible to adjust it

if necessary.</p>

<p>Preview pop-up contents cannot be scrolled and the component must not contain

any buttons or other elements that make it appear interactive: the component

is the same in both standard and touch-enabled devices and should the component

be used in a standard non-touch device, its elements should not look touch-enabled.

There can be a maximum of five text rows in a preview pop-up, and it is possible

to place a small icon in the start of the rows. It is even possible to have

more than one icon on a row instead of text, if necessary. The number of images

in a single preview pop-up is limited to one, and it can be accompanied by

up to two rows of text.</p>

<p>Preview pop-up shows always duplicate data in a given application to ensure

that the user will not miss any content or functionality even if a given product

does not utilize preview pop-up (that is, it has been switched OFF). Owing

to the special nature of preview pop-up, it is important to thoroughly consider

its genuine usefulness in various applications. Furthermore, the component

should not be confused with the Information pop-up note even though the data

displayed in these two components can at times be identical.</p>

<table id="GUID-77983E22-5C85-4810-83B0-F52EFC18D428"><title>Default touch

events in Preview Pop-Up</title>

<tgroup cols="3"><colspec colname="col1" colwidth="0.80*"/><colspec colname="col2" colwidth="1.01*"/><colspec colname="col3" colwidth="1.19*"/>

<thead>

<row>

<entry valign="top"><p>User action</p></entry>

<entry valign="top"><p>State change</p></entry>

<entry valign="top"><p>Feedback</p></entry>

</row>

</thead>

<tbody>

<row>

<entry><p>Touch down / release in Preview pop-up area</p></entry>

<entry><p>Application-specific</p></entry>

<entry><p>Tactile: Tactile feedback follows the component-specific functionality.</p></entry>

</row>

<row>

<entry><p>Touch down / release outside Preview pop-up</p></entry>

<entry><p>Dismisses Preview pop-up</p></entry>

<entry><p>Tactile: No effect</p></entry>

</row>

<row>

<entry><p>Touch down and hold</p></entry>

<entry><p>Application-specific</p></entry>

<entry><p>Tactile: Basic tactile feedback and audio feedback is provided with

touch down event.</p></entry>

</row>

</tbody>

</tgroup>

</table>

<note> No tactile feedback is provided with preview pop-up. Applications need

to take care of tactile feedback for the interactive elements inside Preview

pop-up.</note>

<p/>

<section id="GUID-0381A2A3-571D-4C1D-A418-AA0C71ECB681"><title>Preview pop-up

in a touch interface</title><p>Preview pop-up is a floating component used

for displaying more detailed data about an item that has the focus in the

main pane. It is not a touch-only component, and its basic functionality is

described above. Although it is not recommended to place buttons or other

items that appear touch-enabled into the preview pop-up, it is still possible

to give some items touch-only functions. It is up to each application to decide

whether to make use of this support in some sensible way. For example, a tap

on a www hyperlink displayed in the preview pop-up would open Browser and

open the Web site in question. However, it should be noted that using touch-enabled

items in the preview pop-up is an advanced, heavy-user feature.</p><p>A tap

on an item in the preview pop-up can also open the stylus pop-up menu, when

there is no obvious direct function for that item. For more information, see <xref href="GUID-C4E728B4-3E84-49A4-83CB-DF146420D78A.dita">Stylus pop-up menu</xref>.</p></section>

<section id="GUID-BE7B9950-53D3-4BB5-8971-4CBD0D57CE51"><title>Preview pop-up

for touch only</title><p>The above section describes the general case for

touch and the preview pop-up. There is, however, a variance possibility for

the preview pop-up, which is to limit it strictly for touch. In this case,

the guideline for having no buttons or other obvious touch items in the preview

pop-up can be ignored for the most part: if the preview pop-up can only be

opened with a stylus, it is perfectly acceptable to make touch functions plainly

touch-enabled.</p></section>

<section id="GUID-AC64544E-D3D9-451C-B0EF-FF3F54B280DF"><title>Using

preview pop-ups in C++ applications</title><p>The API to use for creating

the preview pop-up component is the <xref format="html" href="specs/Guides/Information_Preview_Popup_API_Specification/Information_Preview_Popup_API_Specification.html" scope="peer">Information preview pop-up API</xref>.</p><p>Preview pop-ups

can be used in two modes: in the default mode where the pop-up is hidden automatically

as a result of time-out or input event (either a key press or a pointer event),

or in permanent mode where the pop-up stays visible until it is dismissed

by the application code. </p><p>For implementation information, see <xref format="html" href="specs/Guides/Information_Preview_Popup_API_Specification/Information_Preview_Popup_API_Specification.html#Information_Preview_Popup_API_Specification.topic3" scope="peer">Using the Information Preview Pop-up API</xref>. </p></section>

</conbody></concept>