/*
* 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: Class for handling the attachment list
*
*/

#include "nmuiheaders.h"

/*!
	\class NmAttachmentList
	\brief Class for handling the attachment list
*/

/*!
    Constructor
*/
NmAttachmentList::NmAttachmentList(NmAttachmentListWidget *listWidget)
: mListWidget(listWidget)
{
    updateLayout();
}

/*!
    Destructor
*/
NmAttachmentList::~NmAttachmentList()
{ 
    clearList();
}

/*!
    Insert new list item. Returns the count of the attachment in list
*/
int NmAttachmentList::insertAttachment(
    const QString &fullFileName,
    const QString &fileSize,
    const NmId &attachmentPartId)
{
    QString displayName = fullNameToDisplayName(fullFileName);
    mFullFileName.append(fullFileName);
    mDisplayFileName.append(displayName);
    mAttachmentPartId.append(attachmentPartId);
    mFileSize.append(fileSize);
    mListWidget->insertAttachment(count() - 1, displayName, createSizeString(fileSize));
    updateLayout();
    return count() - 1;
}

/*!
    Set attachmentPartId of the list item. Because there can be several attachments with
    same filename, function will search the one which nmid is not set.
*/
void NmAttachmentList::setAttachmentPartId(const QString fullFileName, const NmId &attachmentPartId)
{
    for (int i=0; i<count(); ++i) {
        if (mFullFileName.at(i) == fullFileName && mAttachmentPartId.at(i).id() == 0) {
            mAttachmentPartId.replace(i, attachmentPartId);
        }
    }
}

/*!
    Set fileSize of the attachment.
*/
void NmAttachmentList::setAttachmentSize(const NmId &attachmentPartId, const QString &size)
{
    for (int i=0; i<count(); ++i) {
        if (mAttachmentPartId.at(i) == attachmentPartId) {
            mFileSize.replace(i, size);
        }
    }
}

/*!
    Remove attachment from list position
*/
void NmAttachmentList::removeAttachment(int arrayIndex)
{
    if (arrayIndex < count()) {
        // Remove UI
        mListWidget->removeAttachment(arrayIndex);
        // Remove from data structure
        mFullFileName.removeAt(arrayIndex);
        mDisplayFileName.removeAt(arrayIndex);
        mAttachmentPartId.removeAt(arrayIndex);
        updateLayout();
    }
}

/*!
    Remove attachment which have same fullFileName from list
*/
void NmAttachmentList::removeAttachment(const QString &fullFileName)
{
    for (int i=0; i<count(); ++i) {
        if (mFullFileName.at(i) == fullFileName) {
            removeAttachment(i);
        }
    }
}

/*!
    Remove attachment which have same attachmentPartId from list
*/
void NmAttachmentList::removeAttachment(const NmId &attachmentPartId)
{
    for (int i=0; i<count(); ++i) {
        if (mAttachmentPartId.at(i) == attachmentPartId) {
            removeAttachment(i);
        }
    }
}

/*!
    Clear attachment list from UI and from data structure
*/
void NmAttachmentList::clearList()
{
    for (int i=count()-1; i>=0; --i) {
        // Remove from UI
        mListWidget->removeAttachment(i);
        // Remove from data structure
        mFullFileName.removeAt(i);
        mDisplayFileName.removeAt(i);
        mAttachmentPartId.removeAt(i);
        updateLayout();
    }
}

/*!
    Return attachment list widget
*/
NmAttachmentListWidget* NmAttachmentList::listWidget()
{
    return mListWidget;
}

/*!
    Return attachment count
*/
int NmAttachmentList::count()
{
    return mFullFileName.count();
}

/*!
    Return attachment part id
*/
NmId NmAttachmentList::nmIdByIndex(int listIndex)
{
    return mAttachmentPartId.at(listIndex);
}

/*!
    Return array index of attachment
*/
int NmAttachmentList::indexByNmId(const NmId &id)
{
    for (int i=0; i<count(); ++i) {
        if (mAttachmentPartId.at(i) == id) {
            return i;
        }
    }
    return -1;
}

/*!
    Remove file path from full filename
*/
QString NmAttachmentList::fullNameToDisplayName(const QString &fullName)
{
    return fullName.section('\\', -1);
}

/*!
    Create string for showing the size information
*/
QString NmAttachmentList::createSizeString(const QString &sizeInBytes)
{
    double sizeMb = sizeInBytes.toDouble() / 1000000;
    if (sizeMb < 0.1) {
        // 0.1 Mb is the minimum size shown for attachment
        sizeMb = 0.1;
    }
    return QString().sprintf("(%.1f Mb)", sizeMb); // Use loc string when available
}

/*!
    Update the list layout height
*/
void NmAttachmentList::updateLayout()
{
    // Fix this when progress bar is used
    mListWidget->setMaximumHeight(count() * 29); 
    QTimer::singleShot(1, this, SLOT(delayedLayoutChangeInfo()));
}

/*!
    Send delayed signal about attachment list layout change
*/
void NmAttachmentList::delayedLayoutChangeInfo()
{
    emit attachmentListLayoutChanged();
}