qtmobility/src/contacts/qcontactaction.cpp
changeset 15 1f895d8a5b2b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/src/contacts/qcontactaction.cpp	Tue Jul 06 15:12:50 2010 +0300
@@ -0,0 +1,234 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcontactaction.h"
+#include "qcontactmanager_p.h"
+#include "qcontactactiondescriptor.h"
+
+#include <QSet>
+#include <QString>
+
+QTM_BEGIN_NAMESPACE
+
+QContactAction::~QContactAction()
+{
+}
+
+/*!
+  \class QContactAction
+  \brief The QContactAction class provides an interface for performing an
+  action on a QContact or QContactDetail.
+  \ingroup contacts-main
+  \ingroup contacts-actions
+
+  An action is anything that can be performed on a contact, or a detail of a contact.  An example
+  of an action might be "Send Email" or "Dial" or "Plot Navigation Route".  One action may be
+  implemented by multiple vendors, and indeed one vendor may provide multiple implementations of
+  the same action.  The name of an action identifies its semantics, while its implementation version
+  distinguishes it from other implementations of the action by the same vendor.
+
+  Invocation of an action is asynchronous; at some stage after calling \l invokeAction() the
+  action instance will emit the \l stateChanged() signal.  Any results of the action may be retrieved
+  by calling \l results(), and as results become available the action will emit \l resultsAvailable().
+
+  Each instance of a QContactAction is created by a \l QContactActionFactory when
+  \l QContactActionFactory::instance() is called; the caller takes ownership of the action instance.
+ 
+  \sa QContactActionFactory, QContactActionFilter
+ */
+
+/*!
+  \fn QContactAction::~QContactAction()
+  Clears any memory in use by this instance of the action implementation
+ */
+
+/*!
+  \fn QContactAction::actionDescriptor() const
+  Returns the descriptor which uniquely identifies this action implementation.  A descriptor
+  consists of an action name, a vendor name and an implementation version.
+  The name of the action identifies the action provided; different implementations of an action
+  with the same name must provide the same functionality, but may differ in implementation semantics.
+  Hence, the action name includes the major version of the interface definition implemented.
+  The vendor name is the identification string of the vendor which has provided this implementation.
+  The implementation version is the (minor) version of the implementation, and is vendor-specific.
+
+  \sa QContactActionDescriptor
+ */
+
+/*!
+  \fn QContactAction::state() const
+  Returns the current state of the action.
+  \sa stateChanged()
+ */
+
+/*!
+  \fn QContactAction::metaData() const
+  Returns the meta-data associated with this action, such as icons, labels or sound cues
+ */
+
+/*!
+  \fn QContactAction::contactFilter(const QVariant& value) const
+  Returns a filter which may be used to filter contacts by the availability of this action implementation for them.
+  If \a value is valid, only contacts which have a detail with the given value and for which the action is available are returned
+ */
+
+/*!
+  \fn QContactAction::isDetailSupported(const QContactDetail &detail, const QContact &contact = QContact()) const
+  Returns true if the provided \a detail contains the fields required for this action to be
+  performed on it; otherwise, returns false.
+  Some actions may require other information to be available in order to complete successfully; in that case,
+  the action will also inspect the given \a contact to ensure that it contains the information required.
+  If the contact contains the required information, the function will return true; otherwise, returns false.
+ */
+
+/*!
+  \fn QContactAction::supportedDetails(const QContact& contact) const
+  Returns a list of the details saved in the given \a contact which contain the fields required
+  for this action to be performed on them.
+
+  The default implementation of this function simply tests all the details in the contact
+  using \l isDetailSupported()
+ */
+QList<QContactDetail> QContactAction::supportedDetails(const QContact& contact) const
+{
+    QList<QContactDetail> ret;
+    QList<QContactDetail> details = contact.details();
+    for (int j=0; j < details.count(); j++) {
+        if (isDetailSupported(details.at(j), contact))
+            ret.append(details.at(j));
+    }
+    return ret;
+}
+
+/*!
+  \fn QContactAction::invokeAction(const QContact& contact, const QContactDetail& detail = QContactDetail(), const QVariantMap& parameters = QVariantMap())
+  Initiates the implemented action on the specified \a detail of the given \a contact, or on the first
+  eligible detail saved in the contact if the given \a detail is empty, with the given \a parameters specified.
+  At some point after invocation, one or more \l resultsAvailable() signals will be emitted by the action instance.
+  The results of the action (if any) may be retrieved by calling \l results().
+  When the state of the action changes, the \l stateChanged() signal will be emitted.
+
+  Returns true if the action was invoked successfully, otherwise false.  The return value says nothing
+  about whether the action which was invoked was successful or not, only whether it was initiated or
+  the request for it to be initiated was sent successfully (e.g., if the action is implemented as a one-way
+  RPC call).
+
+  \sa results(), stateChanged()
+ */
+
+/*!
+  \fn QContactAction::results() const
+  Returns the result of the action, if any exists.  Calling this function prior to receiving the \l resultsAvailable()
+  signal will not return a meaningful result.
+ */
+
+/*!
+  \enum QContactAction::State
+  Describes the current status of the asynchronous action operation
+  \value InactiveState The operation has not yet been initiated
+  \value FinishedDetachedState The operation was initiated but no further information is or will be available
+  \value ActiveState The operation was initiated and is not yet finished
+  \value FinishedState The operation successfully completed
+  \value FinishedWithErrorState The operation has finished, but an error occurred
+ */
+
+/*!
+  \fn QContactAction::resultsAvailable()
+  This signal is emitted by an action instance whose functionality has been initiated with \l invokeAction()
+  when results of the action are available.  Not all actions will have results, and these
+  actions will not emit the resultsAvailable() signal.
+
+  If the action implementation is incapable of reporting results of the operation (for example, the
+  action is implemented via a one-way IPC call) it should transition to the \c QContactAction::FinishedDetachedState state
+  immediately upon invocation.
+ */
+
+/*!
+  \fn QContactAction::stateChanged(QContactAction::State newState)
+  This signal is emitted when the state of an action changes to the given \a newState.
+  \sa state()
+ */
+
+/*!
+  Returns a list of identifiers of the available actions which are provided by the given \a vendor and of the given \a implementationVersion.
+  If \a vendor is empty, actions from all vendors and of any implementation version are returned; if \a implementationVersion is empty,
+  any actions from the given \a vendor (regardless of implementation version) are returned.
+ */
+QStringList QContactAction::availableActions(const QString& vendor, int implementationVersion)
+{
+    // SLOW naive implementation...
+    QSet<QString> ret;
+    QContactManagerData::loadFactories();
+    QList<QContactActionDescriptor> actionDescriptors = QContactManagerData::actionDescriptors(QString(), vendor, implementationVersion);
+    for (int i = 0; i < actionDescriptors.size(); i++) {
+        QContactActionDescriptor descriptor = actionDescriptors.at(i);
+        ret.insert(descriptor.actionName());
+    }
+
+    return ret.toList();
+}
+
+/*!
+  Returns a list of QContactActionDescriptor instances which identified implementations of the given \a actionName which are provided by the
+  given \a vendorName and are of the given \a implementationVersion.  If \a actionName is empty, descriptors for
+  implementations of all actions are returned; if \a vendorName is empty, descriptors for implementations provided by any vendor and
+  of any implementation version are returned; if \a implementationVersion is empty, descriptors for any implementations provided by the
+  given \a vendorName of the given \a actionName are returned.
+ */
+QList<QContactActionDescriptor> QContactAction::actionDescriptors(const QString& actionName, const QString& vendorName, int implementationVersion)
+{
+    QContactManagerData::loadFactories();
+    return QContactManagerData::actionDescriptors(actionName, vendorName, implementationVersion);
+}
+
+/*!
+  Returns a pointer to a new instance of the action implementation identified by the given \a descriptor.
+  The caller takes ownership of the action implementation and must delete it to avoid leaking memory.
+ */
+QContactAction* QContactAction::action(const QContactActionDescriptor& descriptor)
+{
+    QContactManagerData::loadFactories();
+    return QContactManagerData::action(descriptor);
+}
+
+#include "moc_qcontactaction.cpp"
+
+QTM_END_NAMESPACE