--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailuis/nmailui/src/nmviewerviewnetreply.cpp	Tue Aug 31 15:04:17 2010 +0300
@@ -0,0 +1,235 @@
+/*
+* 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:
+*
+*/
+
+
+#include "nmuiheaders.h"
+
+static const char *NMUI_NET_REPLY_CONTENT_ID = "cid";
+
+/*!
+    \class NmViewerViewNetReply
+    \brief Mail viewer network reply class
+*/
+
+/*!
+    Constructor
+*/
+NmViewerViewNetReply::NmViewerViewNetReply(QVariant data, NmUiEngine &uiEngine)
+    : QNetworkReply(),
+      mDataArray(data.toByteArray()),
+      mUiEngine(uiEngine),
+      mOperation(NULL),
+      mReadIndex(0)
+{
+    NM_FUNCTION;
+    
+    open(ReadWrite);
+    setReadBufferSize(mDataArray.length());
+    // QNetworkAccessManager starts listening the signals only
+    // after the construction, so we cannot signal reply to be
+    // ready instantly. We need to emit the signals after the
+    // construction.
+    QMetaObject::invokeMethod(this, "signalReady", Qt::QueuedConnection);
+}
+
+/*!
+
+*/
+NmViewerViewNetReply::NmViewerViewNetReply(QVariant data, NmUiEngine &uiEngine, 
+        const NmId &mailboxId, const NmId &folderId, const NmId &messageId, 
+        const NmId &messagePartId)
+    : QNetworkReply(),
+      mDataArray(data.toByteArray()),
+      mUiEngine(uiEngine),
+      mMailboxId(mailboxId),
+      mFolderId(folderId),
+      mMessageId(messageId),
+      mMessagePartId(messagePartId),
+      mOperation(NULL),
+      mReadIndex(0)
+{
+    mOperation = uiEngine.fetchMessagePart(mMailboxId, mFolderId, mMessageId, mMessagePartId);
+    if (mOperation) {
+        connect(mOperation, SIGNAL(operationCompleted(int)),
+            this, SLOT(fetchCompleted(int)));
+        connect(mOperation, SIGNAL(operationCancelled()),
+            this, SLOT(fetchCancelled()));
+    }
+    else {
+        open(ReadWrite);
+        setReadBufferSize(mDataArray.length());
+        QMetaObject::invokeMethod(this, "signalReady", Qt::QueuedConnection);
+    }
+}
+
+/*!
+    Destructor
+*/
+NmViewerViewNetReply::~NmViewerViewNetReply()
+{
+    NM_FUNCTION;
+}
+
+/*!
+    signalReady
+*/
+void NmViewerViewNetReply::signalReady()
+{
+    NM_FUNCTION;
+    
+    // Insert embedded images into cache manually
+    if(manager()) {
+        if(manager()->cache() && request().url().scheme() == NMUI_NET_REPLY_CONTENT_ID) {
+            // Store url to use for reply in access manager finished emitting. 
+            setUrl(request().url());
+            
+            // Metadata required for inserted data
+            QNetworkCacheMetaData metaData;
+            metaData.setUrl(request().url());
+            metaData.setSaveToDisk(true);
+            
+            // Insert data into cache
+            QIODevice *device = manager()->cache()->prepare(metaData);
+            if(device) {
+                device->write(mDataArray);
+                manager()->cache()->insert(device);
+            }
+        }
+    }
+    // Emit these signals to properly emulate downloading from URL
+    emit readyRead();
+    emit finished();
+}
+
+/*!
+    Slot. Called when fetch operation completes
+*/
+void NmViewerViewNetReply::fetchCompleted(int result)
+{
+    NM_FUNCTION;
+    
+    Q_UNUSED(result);
+    NmMessage *message = mUiEngine.message(
+                        mMailboxId, mFolderId, mMessageId);
+    if (message) {
+        QList<NmMessagePart*> partList;
+        message->attachmentList(partList);
+        NmMessagePart *part(NULL);
+        for (int i = 0; !part && i < partList.count(); i++) {
+            if (partList[i]->partId() == mMessagePartId) {
+                part = partList[i];
+                break;
+            }
+        }
+        if (part) {
+            int error = mUiEngine.contentToMessagePart(mMailboxId, mFolderId, mMessageId, *part);
+            if (error == NmNoError) {
+                mDataArray = part->binaryContent();
+            }
+        }
+    }
+    delete message;
+    message = NULL;
+    open(ReadWrite);
+    setReadBufferSize(mDataArray.length());
+    QMetaObject::invokeMethod(this, "signalReady", Qt::QueuedConnection);
+}
+
+/*!
+    Slot. Called if fetch operation is cancelled
+*/
+void NmViewerViewNetReply::fetchCancelled()
+{
+    NM_FUNCTION;
+    
+    // just call fetch completed
+    fetchCompleted(NmCancelError);
+}
+
+/*!
+    setOriginalRequest. This function is created to provide access to call
+    base class' protected function setRequest
+*/
+void NmViewerViewNetReply::setOriginalRequest(const QNetworkRequest &request)
+{
+    NM_FUNCTION;
+    
+    setRequest(request);
+}
+
+/*!
+    readData
+*/
+qint64 NmViewerViewNetReply::readData(char *data, qint64 maxlen)
+{
+    NM_FUNCTION;
+    
+    qint64 i = 0;
+    const qint64 dataLength(mDataArray.length());
+
+    if (0 >= dataLength || !data) {
+        return -1;
+    }
+
+    for (i = 0; i < maxlen && mReadIndex < dataLength; i++, mReadIndex++) {
+        data[i] = mDataArray.at(mReadIndex);
+    }
+    return i;
+}
+
+/*!
+    readBufferSize. Returns the size of the read buffer, in bytes.
+*/
+qint64 NmViewerViewNetReply::readBufferSize() const
+{
+    NM_FUNCTION;
+    
+    return mDataArray.length();
+}
+
+/*!
+    bytesAvailable. Returns the number of bytes that are available for reading.
+    This function is commonly used with sequential devices to determine the number of bytes to
+    allocate in a buffer before reading. Base implementation is called in order to
+    include the size of QIODevices' buffer.
+*/
+qint64 NmViewerViewNetReply::bytesAvailable() const
+{
+    NM_FUNCTION;
+    
+    return mDataArray.length() + QIODevice::bytesAvailable();
+}
+
+/*!
+    isSequential. Returns true if this device is sequential.
+*/
+bool NmViewerViewNetReply::isSequential () const
+{
+    NM_FUNCTION;
+    
+    return false;
+}
+
+/*!
+    abort. Aborts the operation immediately and close down any
+    network connections still open
+*/
+void NmViewerViewNetReply::abort()
+{
+    NM_FUNCTION;
+}
+