author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 02 Sep 2010 20:15:00 +0300 | |
changeset 65 | 478bc57ad291 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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#include "nmuieventsnotifier.h" |
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#include <QDataStream> |
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#include <XQPublishAndSubscribeUtils> |
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const long int NmSettingsKeyCategoryId(0x2002C326); // NMailAgent UID3 |
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const unsigned long int NmSettingsKeyUiEvents(0x00000100); |
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const XQPublishAndSubscribeSettingsKey NmUiEventsKey(NmSettingsKeyCategoryId, |
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NmSettingsKeyUiEvents); |
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#define NmUiEventTypeArrayType qint16 |
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#define NmUiViewIdArrayType qint16 |
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#define NmMailboxIdArrayType quint64 |
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const size_t NmUiEventByteArraySize(sizeof(NmUiEventTypeArrayType) + |
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sizeof(NmUiViewIdArrayType) + |
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sizeof(NmMailboxIdArrayType)); |
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/*! |
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\class NmUiEventsNotifier |
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\brief API class for notifying other processes about email UI events. |
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*/ |
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/*! |
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Class constructor. |
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*/ |
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NmUiEventsNotifier::NmUiEventsNotifier(QObject *parent /* = NULL */) |
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: QObject(parent) |
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{ |
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XQPublishAndSubscribeUtils psUtils(mSettingsManager); |
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// The following will only work if this instance is constructed inside the |
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// nmailagent process since the category ID of the key is the UID3 of the |
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// process. Other processes do not have the permission to define the |
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// property. |
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psUtils.defineProperty(NmUiEventsKey, XQSettingsManager::TypeByteArray); |
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mSettingsManager.startMonitoring(NmUiEventsKey); |
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connect(&mSettingsManager, SIGNAL(valueChanged(const XQSettingsKey &, const QVariant &)), |
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this, SLOT(valueChanged(const XQSettingsKey &, const QVariant &)), |
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Qt::UniqueConnection); |
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} |
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/*! |
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Class destructor. |
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*/ |
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NmUiEventsNotifier::~NmUiEventsNotifier() |
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{ |
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XQPublishAndSubscribeUtils psUtils(mSettingsManager); |
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psUtils.deleteProperty(NmUiEventsKey); |
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} |
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/*! |
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Notifies observers about view state changed event. |
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\param eventType The type of state change. |
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\param viewId The ID of the view which was shown. |
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\param mailboxId The ID of the mailbox related to the view. |
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\return True if success, false otherwise. |
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*/ |
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bool NmUiEventsNotifier::notifyViewStateChanged(const NmUiEventType eventType, |
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const NmUiViewId viewId, |
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const NmId &mailboxId) |
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{ |
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QByteArray array; |
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array.resize((int)NmUiEventByteArraySize); |
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// Use a data stream to write the values into the array. |
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QDataStream stream(&array, QIODevice::WriteOnly); |
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stream << (NmUiEventTypeArrayType)eventType << |
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(NmUiViewIdArrayType)viewId << |
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(NmMailboxIdArrayType)mailboxId.id(); |
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XQSettingsManager settingsManager; |
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return settingsManager.writeItemValue(NmUiEventsKey, array); |
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} |
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/*! |
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Compares the two given keys. |
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\param settingsKey XQSettingsKey |
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\param psSettingsKey XQPublishAndSubscribeSettingsKey |
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\return <code>true</code> if the target, uid and key values match, otherwise |
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returns <code>false</code> |
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*/ |
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bool NmUiEventsNotifier::keysEqual( |
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const XQSettingsKey& settingsKey, |
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const XQPublishAndSubscribeSettingsKey& psSettingsKey) const |
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{ |
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return ((settingsKey.target() == psSettingsKey.target()) && |
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(settingsKey.uid() == psSettingsKey.uid()) && |
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(settingsKey.key() == psSettingsKey.key())); |
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} |
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/*! |
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Parses the value from the given byte array. |
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\param array The array to parse. |
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\param eventType Where the event type is stored to. |
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\param viewId Where the view ID is stored to. |
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\param mailboxId Where the mailbox ID is stored to. |
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\return True if success, false otherwise. |
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*/ |
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bool NmUiEventsNotifier::parseKeyValue(const QByteArray &array, |
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NmUiEventType &eventType, |
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NmUiViewId &viewId, |
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NmId &mailboxId) const |
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{ |
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bool success(false); |
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if (array.size() >= (int)NmUiEventByteArraySize) { |
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NmUiEventTypeArrayType type(0); |
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NmUiViewIdArrayType vId(0); |
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NmMailboxIdArrayType mbId(0); |
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|
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// Use a data stream to read the values from the array. |
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QDataStream stream(array); |
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stream >> type >> vId >> mbId; |
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// Convert the values into proper types. |
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eventType = (NmUiEventType)type; |
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viewId = (NmUiViewId)vId; |
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mailboxId.setId(mbId); |
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success = true; |
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} |
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return success; |
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} |
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/*! |
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Handles the occured UI events. Processes the value changed events of |
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settings keys. |
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\param key The settings key of which value was changed. |
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\param value The new value of the key. |
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*/ |
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void NmUiEventsNotifier::valueChanged(const XQSettingsKey &key, |
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const QVariant &value) |
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{ |
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if (keysEqual(key, NmUiEventsKey)) { |
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QByteArray array = value.toByteArray(); |
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NmUiEventType eventType(NmInvalidUiEvent); |
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NmUiViewId viewId(NmUiViewNone); |
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NmId mailboxId(0); |
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if (parseKeyValue(array, eventType, viewId, mailboxId)) { |
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emit viewStateChanged(eventType, viewId, mailboxId); |
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} |
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} |
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} |
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// End of file. |