author | Dominic Pinkman <Dominic.Pinkman@Nokia.com> |
Fri, 22 Jan 2010 18:26:19 +0000 | |
changeset 1 | 25a17d01db0c |
child 5 | f345bda72bc4 |
permissions | -rw-r--r-- |
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<?xml version="1.0" encoding="utf-8"?> |
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
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<!-- This component and the accompanying materials are made available under the terms of the License |
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"Eclipse Public License v1.0" which accompanies this distribution, |
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
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<!-- Initial Contributors: |
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Nokia Corporation - initial contribution. |
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Contributors: |
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--> <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"><concept id="GUID-ED784025-4E65-4BE9-ADA8-A13427B6EA30" xml:lang="en"><title>Markable |
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list</title><prolog><metadata><keywords></keywords></metadata></prolog><conbody> |
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<p>A markable list is a selection list with the added marking feature. The |
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user can mark any number of items on the list while browsing it, and then |
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execute a single command, which is applied to all the marked items. This is |
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analogous to the multiple-item highlight feature used in computer GUIs.</p> |
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<p>The marking feature is typically applied to lists the user manages, containing |
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a large number of items that may be for example sent, moved, or deleted. By |
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marking items first and then selecting a command, the user can perform certain |
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operations more quickly and with less key presses than by performing the command |
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separately for each of the items.</p> |
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<p>Marked items are indicated graphically.</p> |
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<fig id="GUID-08F82B30-CF52-42CA-97F5-D1D3A1C48460"> |
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<title>Markable list. Marked items are indicated graphically in the list.</title> |
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<image href="GUID-B142FB0F-518F-436A-83D1-57BDE9671E44_d0e80133_href.png" scale="40" placement="inline"></image> |
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</fig> |
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<p>The <b>Mark</b> and <b>Unmark</b> functions are available in the Options |
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menu of the markable list. Alternatively, or as a shortcut, the user can keep |
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the Hash (#) key pressed while using the Arrow keys and the Selection key |
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in the following way:</p> |
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<ul> |
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<li><p>Pressing the Hash (#) key marks the current item. This is a toggling |
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function, so pressing the Hash (#) key on a marked item unmarks the item. </p></li> |
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<li><p>Pressing an Arrow key (up or down) while holding down the Hash (#) |
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key marks both the current item and the one onto which the focus moves. If |
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the user keeps holding the Hash (#) key and scrolls further in the same direction, |
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all the scrolled items become marked; to unmark the items in reverse order |
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the user can scroll into the opposite direction while holding the Hash (#) |
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key down. </p></li> |
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<li><p>Items can be unmarked by pressing the Hash (#) key together with scrolling: |
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if the user starts holding the Hash (#) key down when on a marked item and |
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then scrolls, all the scrolled items become unmarked. </p></li> |
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<li><p>Several marking actions can be done subsequently. The user can mark |
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an item, then release the Hash (#) key, browse and move the focus onto some |
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other item on the list, and then mark that item. The first item remains marked, |
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and the ones between the two do not become marked. </p></li> |
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<li><p>All items become unmarked when the user exits the list, for example |
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by back stepping. There may be exceptions to this rule in certain applications |
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that require selecting items from several levels of folder hierarchy. An example |
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of this is creating a play list in the Media Player application. Items remain |
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marked if the user opens and cancels the <b>Options</b> menu, or swaps applications. </p></li> |
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<li><p>Pressing the Selection key when there are marked items on the list |
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opens the context sensitive <b>Options</b> menu containing only those functions |
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that apply to multiple items.</p></li> |
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</ul> |
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<p>A markable list functions exactly like a normal selection list, except |
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for the marking feature.</p> |
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<p>Devices that have the optional Edit key perform these same functions by |
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using the Edit key and arrow keys instead of the Hash (#) key.</p> |
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<p>The user may access the <b>Options</b> menu to perform functions on all |
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marked items at once. When user has one or more items marked, <b>Options</b> menu |
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does not contain items that apply to one item only (such as <b>Open</b>). |
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Exceptions are Help and Exit, which should appear in every <b>Options</b> menu. |
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Appropriate error handling must be designed for functions that do not apply |
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to some or all of the marked items.</p> |
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<ul> |
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<li><p>When executing a function, if any of the items are marked, all the |
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marked items are affected by the function. If the focus is on an item that |
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is not marked, the function does not affect that item. </p></li> |
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<li><p>After the selected function is successfully done, all items are unmarked. |
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In an error case, when the function cannot be applied, the marks should remain |
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in place.</p></li> |
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</ul> |
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<p>The Options menu includes the marking and unmarking functions in a submenu |
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so that any user can find the feature. The submenu has also the <b>Mark all</b> and <b>Unmark</b> all |
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options.</p> |
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<p>For other keypad actions, see <xref href="GUID-0822B030-E776-4BD5-B9C9-23D3821BCE1F.dita">Selection |
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list</xref>.</p> |
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<section><title>Using markable lists |
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in C++ applications</title><p>The API to use for markable lists is the Lists |
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API. For implementation information, see Using |
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the Lists API.</p></section> |
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</conbody></concept> |