--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailuis/nmailui/src/nmeditortextdocument.cpp	Tue Aug 31 15:04:17 2010 +0300
@@ -0,0 +1,121 @@
+/*
+* 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_DOC_DEFAULT_IMAGE = ":/trolltech/styles/commonstyle/images/file-16.png";
+
+/*!
+    \class NmEditorTextDocument
+    \brief Text document with URL image fetching support
+*/
+
+/*!
+    Constructor. Caller needs to ensure manager is valid reference.
+*/
+NmEditorTextDocument::NmEditorTextDocument(QNetworkAccessManager &manager) :
+    mManager(manager)
+{
+    NM_FUNCTION;
+    
+    connect(&mManager, SIGNAL(finished(QNetworkReply*)),
+        this, SLOT(replyFinished(QNetworkReply*)));
+}
+
+/*!
+    Destructor
+*/
+NmEditorTextDocument::~NmEditorTextDocument()
+{
+    NM_FUNCTION;
+    
+    foreach(QNetworkReply *reply, mReplyList) {
+        if(reply) {
+            reply->abort();
+            reply->deleteLater();
+        }
+    }
+}
+
+/*!
+    replyFinished. Signaled when the image has been loaded from Internet.
+*/
+void NmEditorTextDocument::replyFinished(QNetworkReply *reply)
+{
+    NM_FUNCTION;
+    
+    if(reply) {
+        if(reply->error() == QNetworkReply::NoError) {
+            QPixmap image;
+            if(image.loadFromData(reply->readAll())) { 
+                addResource(QTextDocument::ImageResource, reply->url(), QVariant(image));
+                emit documentLayoutChanged();
+            }
+        }
+        // If this has created the request, then this needs to handle deletion also.
+        if (mReplyList.removeAll(reply)) {
+            reply->deleteLater();
+        }
+    }
+}
+
+/*!
+    loadResource. Starts fetching image from given URL.
+*/
+QVariant NmEditorTextDocument::loadResource(int type, const QUrl &name)
+{
+    NM_FUNCTION;
+    
+    QVariant retVal;
+    
+    if(type == QTextDocument::ImageResource) {    
+        // Load image data from the cache if it exists
+        if(mManager.cache()) {
+            QIODevice *ioDevice = mManager.cache()->data(name);
+            if(ioDevice) {
+                QPixmap image;
+                if(image.loadFromData(ioDevice->readAll())) {
+                    addResource(QTextDocument::ImageResource, name, QVariant(image));
+                    retVal = QVariant(image);
+                }
+                delete ioDevice;
+            }
+        }
+        
+        // Loading from cache failed, try from internet.
+        if(retVal.isNull()) {
+            // Make a request to load the image from Internet. Store the reply
+            // to be able to abort it if necessary.
+            QNetworkRequest request(name);
+            mReplyList.append(mManager.get(request));
+            
+            // Load Qt's default image to prevent multiple calls to loadResource.
+            // This function keeps on getting called repeatedly until 
+            // resource is added. 
+            QPixmap image = QPixmap(QLatin1String(NMUI_DOC_DEFAULT_IMAGE));
+            addResource(QTextDocument::ImageResource, name, QVariant(image));
+            retVal = image;
+        }
+    }
+    
+    // Could not find the resource -> try Qt implementation
+    if(retVal.isNull()) {
+        retVal = QTextDocument::loadResource(type, name);
+    }
+    return retVal;
+}