/*

* 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: Message editor header container class. Collects the header widgets.

*

*/

#include "nmuiheaders.h"

// Layout

// These match to the defintions in nmeditorview.docml

static const char *NMUI_EDITOR_CONTAINER = "containerContents";

static const char *NMUI_EDITOR_SUBJECT_FIELD = "editorSubjectField";

static const char *NMUI_EDITOR_SUBJECT_EDIT = "editorSubjectEdit";

static const char *NMUI_EDITOR_CC_FIELD = "editorCcField";

static const char *NMUI_EDITOR_BCC_FIELD = "editorBccField";

static const char *NMUI_EDITOR_PRIORITY_ICON = "editPriorityIcon";

static const char *NMUI_EDITOR_FOLLOWUP_ICON = "editFollowUpIcon";

static const char *NMUI_EDITOR_ATTACHMENT_LIST = "attachmentListWidget";

static const char *NMUI_EDITOR_PREFIX_TO = "editorTo";

static const char *NMUI_EDITOR_PREFIX_CC = "editorCc";

static const char *NMUI_EDITOR_PREFIX_BCC = "editorBcc";

static const int MaxRows = 10000;

/*!

    Constructor

*/

NmEditorHeader::NmEditorHeader(HbDocumentLoader *documentLoader) :

    mDocumentLoader(documentLoader),

    mHeaderHeight(0),

    mIconVisible(false),

    mSubjectEdit(NULL),

    mRecipientFieldsEmpty(true),

    mAttachmentList(NULL),

    mToField(NULL),

    mCcField(NULL),

    mBccField(NULL),

    mCcBccFieldVisible(false)

{

    NM_FUNCTION;

    loadWidgets();

    createConnections();

}

/*!

    Destructor

*/

NmEditorHeader::~NmEditorHeader()

{

    NM_FUNCTION;

}

/*!

    Load widgets from XML for the header.

*/

void NmEditorHeader::loadWidgets()

{

    NM_FUNCTION;

    // Load widgets from docml and construct handlers. Those widgets that are not shown by default

    // are hidden and removed from the layout at this phase.    

    HbWidget *contentWidget =

        qobject_cast<HbWidget *>(mDocumentLoader->findWidget(NMUI_EDITOR_CONTAINER));

    mLayout = static_cast<QGraphicsLinearLayout *>(contentWidget->layout());

    // base class QObject takes the deleting responsibility

    mToField = new NmRecipientField(this, *mDocumentLoader, NMUI_EDITOR_PREFIX_TO);

    mCcField = new NmRecipientField(this, *mDocumentLoader, NMUI_EDITOR_PREFIX_CC);

    mBccField = new NmRecipientField(this, *mDocumentLoader, NMUI_EDITOR_PREFIX_BCC);

    // Cc field is not shown by default. It needs to be both hidden and removed from the layout.

	mCcWidget = qobject_cast<HbWidget *>(mDocumentLoader->findWidget(NMUI_EDITOR_CC_FIELD));

    mCcWidget->hide();

    mLayout->removeItem(mCcWidget);

    // Bcc field is not shown by default. It needs to be both hidden and removed from the layout.

    mBccWidget = qobject_cast<HbWidget *>(mDocumentLoader->findWidget(NMUI_EDITOR_BCC_FIELD));

    mBccWidget->hide();

    mLayout->removeItem(mBccWidget);

    mSubjectWidget =

        qobject_cast<HbWidget *>(mDocumentLoader->findWidget(NMUI_EDITOR_SUBJECT_FIELD));

    mSubjectLayout = static_cast<QGraphicsLinearLayout *>(mSubjectWidget->layout());

    // Add Subject: field

    mSubjectEdit = qobject_cast<NmHtmlLineEdit *>

        (mDocumentLoader->findWidget(NMUI_EDITOR_SUBJECT_EDIT));

    mSubjectEdit->setMaxRows(MaxRows);

    // Add attachment list

    NmAttachmentListWidget *attachmentList = qobject_cast<NmAttachmentListWidget *>

        (mDocumentLoader->findWidget(NMUI_EDITOR_ATTACHMENT_LIST));

    // Create attachment list handling object

    mAttachmentList = new NmAttachmentList(*attachmentList);

    mAttachmentList->setParent(this); // ownership changes

    attachmentList->hide();

    mLayout->removeItem(attachmentList);

    // Add priority icon

    mPriorityIcon = qobject_cast<HbLabel *>

        (mDocumentLoader->findWidget(NMUI_EDITOR_PRIORITY_ICON));

    mPriorityIcon->hide();

    mSubjectLayout->removeItem(mPriorityIcon);

    // follow-up icon is not yet supported

    HbLabel *followUpIcon = qobject_cast<HbLabel *>

        (mDocumentLoader->findWidget(NMUI_EDITOR_FOLLOWUP_ICON));

    followUpIcon->hide();

    mSubjectLayout->removeItem(followUpIcon);

}

/*!

    Create signal - slot connections.

*/

void NmEditorHeader::createConnections()

{

    NM_FUNCTION;

    // Signals for checking if the recipient fields have text.

    connect(mToField, SIGNAL(textChanged(const QString &)),

            this, SLOT(editorContentChanged()));

    connect(mCcField, SIGNAL(textChanged(const QString &)),

            this, SLOT(editorContentChanged()));

    connect(mBccField, SIGNAL(textChanged(const QString &)),

            this, SLOT(editorContentChanged()));

    // Signals for handling the recipient field expanding

    connect(mToField, SIGNAL(textChanged(const QString &)),

            this, SLOT(sendDelayedHeaderHeightChanged()));

    connect(mCcField, SIGNAL(textChanged(const QString &)),

            this, SLOT(sendDelayedHeaderHeightChanged()));

    connect(mBccField, SIGNAL(textChanged(const QString &)),

            this, SLOT(sendDelayedHeaderHeightChanged()));

    connect(mSubjectEdit, SIGNAL(contentsChanged()), this, SLOT(sendDelayedHeaderHeightChanged()));

    // Signals for handling the attachment list

    connect(&mAttachmentList->listWidget(), SIGNAL(itemActivated(int)),

            this, SLOT(attachmentActivated(int)));

    connect(&mAttachmentList->listWidget(), SIGNAL(longPressed(int, QPointF)),

            this, SLOT(attachmentLongPressed(int, QPointF)));

}

/*!

   Show or hide recipient field

*/

void NmEditorHeader::setFieldVisibility(bool isVisible)

{

	if ( mCcBccFieldVisible != isVisible ) {

		mCcBccFieldVisible = isVisible;

		if (mCcBccFieldVisible) {

            mLayout->insertItem(1, mBccWidget);

			mLayout->insertItem(1, mCcWidget);

			mCcWidget->show();

            mBccWidget->show();

		}

		else {

            mCcWidget->hide();

            mBccWidget->hide();

			mLayout->removeItem(mCcWidget);

			mLayout->removeItem(mBccWidget);

		}

	}

}

/*!

    Return the height of the whole header widget.

 */

qreal NmEditorHeader::headerHeight() const

{

    NM_FUNCTION;

    // get the layout's vertical spacing

    qreal spacing = 0;

    HbStyle().parameter("hb-param-margin-gene-middle-vertical", spacing);

    // calculate the height

    qreal height = 0;

    height += mToField->height(); // returns widget's geometry height

    height += spacing;

    if (mCcBccFieldVisible) {

        height += mCcField->height(); // returns widget's geometry height

        height += spacing;

        height += mBccField->height(); // returns widget's geometry height

        height += spacing;

    }

    height += mSubjectWidget->geometry().height();

    height += spacing;

    if (mAttachmentList->listWidget().isVisible()) {

        height += mAttachmentList->listWidget().geometry().height();

        height += spacing;

    }

    return height;

}

/*!

 */

void NmEditorHeader::sendDelayedHeaderHeightChanged()

{

    NM_FUNCTION;

}

/*!

 */

void NmEditorHeader::sendHeaderHeightChanged()

{

    qreal hHeight = headerHeight();

    if (mHeaderHeight != hHeight) {

        mHeaderHeight = hHeight;

        emit headerHeightChanged(mHeaderHeight);

    }

}

/*!

    Return pointer to to edit

 */

NmRecipientLineEdit* NmEditorHeader::toEdit() const

{

    NM_FUNCTION;

    return mToField->editor();

}

/*!

    Return pointer to cc edit

 */

NmRecipientLineEdit* NmEditorHeader::ccEdit() const

{

    NM_FUNCTION;

    return mCcField->editor();

}

/*!

    Return pointer to bcc edit

 */

NmRecipientLineEdit* NmEditorHeader::bccEdit() const

{

    NM_FUNCTION;

    return mBccField->editor();

}

/*!

    Return pointer to subject field

 */

NmHtmlLineEdit* NmEditorHeader::subjectEdit() const

{

    NM_FUNCTION;

    return mSubjectEdit;

}

/*!

    Checks if recipient editors are empty and emits a signal if

    the state is changed.

*/

void NmEditorHeader::editorContentChanged()

{

    NM_FUNCTION;

    bool recipientsFieldsEmpty = true;

    if (mToField->text().length()) {

        recipientsFieldsEmpty = false;

    }

    else if (mCcField->text().length()) {

        recipientsFieldsEmpty = false;

    }

    else if (mBccField->text().length()) {

        recipientsFieldsEmpty = false;

    }

    if (mRecipientFieldsEmpty != recipientsFieldsEmpty) {

        mRecipientFieldsEmpty = recipientsFieldsEmpty;

        emit recipientFieldsHaveContent(!mRecipientFieldsEmpty);

    }

}

/*!

    Sets the icon for priority

 */

void NmEditorHeader::setPriority(NmMessagePriority priority)

{

    NM_FUNCTION;

    switch (priority) {

    case NmMessagePriorityHigh:

        setPriority(NmActionResponseCommandPriorityHigh);

        break;

    case NmMessagePriorityLow:

        setPriority(NmActionResponseCommandPriorityLow);

        break;

    default:

        setPriority(NmActionResponseCommandNone);

        break;

    }

}

/*!

    Sets the icon for priority

 */

void NmEditorHeader::setPriority(NmActionResponseCommand prio)

{

    NM_FUNCTION;

    switch(prio) {

    case NmActionResponseCommandPriorityHigh:

        if (!mIconVisible) {

            mIconVisible = true;

            // icon widget is just after the subject line edit (see docml)

            mSubjectLayout->insertItem(2, mPriorityIcon);

            mPriorityIcon->show();

        }

        mPriorityIcon->setIcon(

            NmIcons::getIcon(NmIcons::NmIconPriorityHigh));

        break;

    case NmActionResponseCommandPriorityLow:

        if (!mIconVisible) {

            mIconVisible = true;

            // icon widget is just after the subject line edit (see docml)

            mSubjectLayout->insertItem(2, mPriorityIcon);

            mPriorityIcon->show();

        }

        mPriorityIcon->setIcon(

            NmIcons::getIcon(NmIcons::NmIconPriorityLow));

        break;

    default:

        if (mIconVisible) {

            mIconVisible = false;

            HbIcon emptyIcon;

            mPriorityIcon->setIcon(emptyIcon);

            mSubjectLayout->removeItem(mPriorityIcon);

            mPriorityIcon->hide();

        }

        break;

    }

}

/*!

   Adds an attachment to attachment list for mail.

 */

void NmEditorHeader::addAttachment(

    const QString &fileName, const QString &fileSize, const NmId &nmid)

{

    NM_FUNCTION;

    mAttachmentList->insertAttachment(fileName, fileSize, nmid);

    if (!mAttachmentList->listWidget().isVisible()) {

        // attachment list is inserted just before the body widget (see docml).

        mLayout->insertItem(mLayout->count() - 1, &mAttachmentList->listWidget());

        mAttachmentList->listWidget().show();

    }

}

/*!

   Remove attachment from the list. This function is used when

   attachment adding has failed and attachment id is not known.

 */

void NmEditorHeader::removeAttachment(const QString &fileName)

{

    NM_FUNCTION;

    mAttachmentList->removeAttachment(fileName);

    if (mAttachmentList->count() == 0) {

        mAttachmentList->listWidget().hide();

        mLayout->removeItem(&mAttachmentList->listWidget());

    }

}

/*!

   Remove attachment from the list. This function is used when

   attachment has been selected for remove.

 */

void NmEditorHeader::removeAttachment(const NmId &nmid)

{

    NM_FUNCTION;

    mAttachmentList->removeAttachment(nmid);

}

/*!

    This function set messagePartId and fileSize for attachment.

 */

void NmEditorHeader::setAttachmentParameters(

    const QString &fileName,

    const NmId &msgPartId,

    const QString &fileSize,

    int result)

{

    NM_FUNCTION;

    if (result == NmNoError) {

        // Attachment adding succesful, set message part id and size for attachment

        mAttachmentList->setAttachmentPartId(fileName, msgPartId);

        mAttachmentList->setAttachmentSize(msgPartId, fileSize);

    }

}

/*!

   Slot attachment activated from attachment list by short tap.

 */

void NmEditorHeader::attachmentActivated(int arrayIndex)

{

    NM_FUNCTION;

}

/*!

   Slot attachment selected from attachment list by longtap.

 */

void NmEditorHeader::attachmentLongPressed(int arrayIndex, QPointF point)

{

    NM_FUNCTION;

    // Remove selected attachment

    emit attachmentLongPressed(mAttachmentList->nmIdByIndex(arrayIndex), point);

}