taskswitcher/tsdevicedialogplugin/src/tsmodel.cpp
changeset 125 26079c1bb561
parent 119 50e220be30d1
child 127 7b66bc3c6dc9
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taskswitcher/tsdevicedialogplugin/src/tsmodel.cpp	Wed Oct 06 16:00:22 2010 +0300
@@ -0,0 +1,216 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:
+*
+* Description: tsmodel.cpp
+*
+*/
+#include "tsmodel.h"
+
+#include <QVariant>
+#include <QList>
+
+#include <HbIcon>
+
+#include <afstorageglobals.h>
+
+#include "tsmodelitem.h"
+#include "tsdataroles.h"
+#include "tstaskchangeinfo.h"
+
+/*!
+    \class TsModel
+    \ingroup group_tsdevicedialogplugin
+    \brief Model storing running tasks.
+*/
+
+/*!
+    Constructor
+    \param query used to create model
+    \param pointer to parent object
+*/
+TsModel::TsModel(TsTaskMonitor &applicationSrv, QObject *parent) :
+    QAbstractListModel(parent),
+    mEntries(),
+    mApplicationService(applicationSrv)
+{
+    connect(&applicationSrv,
+            SIGNAL(taskListChanged()),
+            this,
+            SLOT(updateApplications()));
+
+    fullUpdate();
+}
+
+/*!
+    Destructor
+*/
+TsModel::~TsModel()
+{
+    qDeleteAll(mEntries);
+}
+
+/*!
+    Returns count of rows in model
+    \retval number of rows
+*/
+int TsModel::rowCount(const QModelIndex &parent) const
+{
+    Q_UNUSED(parent);
+    return mEntries.count();
+}
+
+bool TsModel::insertRows(int row, int count, TsModelItem *item, const QModelIndex &parent)
+{
+    beginInsertRows(parent, row, row+count-1);
+    mEntries.insert(row, item);
+    endInsertRows();
+    return true;
+}
+
+bool TsModel::removeRows(int row, int count, const QModelIndex &parent)
+{
+    TsModelItem *oldItem = mEntries.at(row);
+    beginRemoveRows(parent, row, row + count - 1);
+    mEntries.removeAt(row);
+    delete oldItem;
+    endRemoveRows();
+    return true;
+}
+
+
+bool TsModel::moveRows(int oldPosition, int newPosition, const QModelIndex &parent)
+{
+    beginMoveRows(parent, oldPosition, oldPosition, parent, newPosition);
+    mEntries.move(oldPosition, newPosition);
+    endMoveRows();
+    return true;
+}
+
+
+bool TsModel::updateRows(int row, TsModelItem *item)
+{
+    TsModelItem *oldItem = mEntries.at(row);
+    mEntries[row] = item;
+    delete oldItem;
+
+    emit dataChanged(index(row),index(row));
+    return true;
+}
+
+/*!
+    Returns appropiate model's data
+    \param index model index
+    \param role which data role to return
+    \retval models data
+*/
+QVariant TsModel::data(const QModelIndex &index, int role) const
+{
+    return index.isValid() ? entry(index)->data(role) : QVariant();
+}
+
+/*!
+    Activate one of model entries
+*/
+void TsModel::openApplication(const QModelIndex &index)
+{
+    if (!index.isValid()) {
+        return;
+    }
+    entry(index)->open();
+}
+
+/*!
+    Close one of moder entries
+*/
+void TsModel::closeApplication(const QModelIndex &index)
+{
+    if (!index.isValid() ||
+            !entry(index)->data(TsDataRoles::Closable).toBool()) {
+        return;
+    }
+    entry(index)->close();
+}
+
+/*!
+    Updates model with fresh entries
+*/
+void TsModel::updateApplications()
+{
+    QList<TsTaskChange> changes(mApplicationService.changeList());
+
+    if (changes.count() == 0) {
+        return;
+    }
+    //check 1st item whether we have cancel change - if so reset model
+    if (changes[0].first.changeType() == TsTaskChangeInfo::EChangeCancel) {
+        fullUpdate();
+        return;
+    }
+    for (int iter(0); iter < changes.count(); iter++) {
+        switch (changes[iter].first.changeType()) {
+            case TsTaskChangeInfo::EChangeDelete :
+                removeRows(changes[iter].first.oldOffset(), 1);
+                break;
+            case TsTaskChangeInfo::EChangeInsert :
+                insertRows(changes[iter].first.newOffset(), 1,
+                           new TsModelItem(changes[iter].second));
+                break;
+            case TsTaskChangeInfo::EChangeMove :
+                moveRows(changes[iter].first.oldOffset(), changes[iter].first.newOffset());
+                break;
+            case TsTaskChangeInfo::EChangeUpdate :
+                updateRows(changes[iter].first.oldOffset(),
+                           new TsModelItem(changes[iter].second));
+                break;
+            default:
+                break;
+        }
+    }
+}
+
+/*!
+    reset model
+*/
+void TsModel::fullUpdate()
+{
+    beginResetModel();
+    qDeleteAll(mEntries);
+    mEntries.clear();
+    getApplications();
+    endResetModel();
+
+}
+
+/*!
+    Read list of running applications
+*/
+void TsModel::getApplications()
+{
+    //get all running applications and append to entries list
+    QList<TsTaskChange> tasks(mApplicationService.changeList(true));
+    foreach(TsTaskChange taskData, tasks) {
+        if (!taskData.second.isNull()) {
+            mEntries.append(new TsModelItem(taskData.second));
+        }
+    }
+}
+
+/*!
+    Returns an entry from model
+    \param index of entry in model
+    \retval pointer to an entry
+*/
+TsModelItem *TsModel::entry(const QModelIndex &index) const
+{
+    return mEntries.at(index.row());
+}