/*

* 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 body text field

*

*/

#include "nmailuiwidgetsheaders.h"

static const QString FILE_PATH_CSS_DEFAULT = ":nmeditortexteditblack.css";

static const QString FILE_PATH_CSS_SECONDARY = ":nmeditortexteditblue.css";

static const QString FILE_PATH_WIDGETML = ":nmeditortextedit.widgetml";

/*!

    Constructor

*/

NmEditorTextEdit::NmEditorTextEdit(QGraphicsItem *parent) :

    HbTextEdit(parent)

{

    NM_FUNCTION;

    HbStyleLoader::registerFilePath(FILE_PATH_WIDGETML);

    HbStyleLoader::registerFilePath(FILE_PATH_CSS_DEFAULT);

    mCustomTextColor = QPair<bool, QColor>(false, Qt::black);

    // Disable HbTextEdit scrolling. Background scroll area will handle scrolling.

    setScrollable(false);

    scrollArea()->setScrollDirections(0);

    // set background colour to plain white

    QPixmap whitePixmap(10,10);

    whitePixmap.fill(Qt::white);

    QGraphicsPixmapItem *pixmapItem = new QGraphicsPixmapItem (whitePixmap);

    setBackgroundItem(pixmapItem); 

    // Create custom palette based on the current one

    QPalette testPalette = QApplication::palette();

    // Sets the selection background colour

    testPalette.setColor(QPalette::Active, QPalette::Highlight, Qt::cyan);

    testPalette.setColor(QPalette::Inactive, QPalette::Highlight, Qt::cyan);

    // Sets the link and visited link colours

    testPalette.setColor(QPalette::Active, QPalette::Link, Qt::darkBlue);

    testPalette.setColor(QPalette::Inactive, QPalette::Link, Qt::darkBlue);

    testPalette.setColor(QPalette::Active, QPalette::LinkVisited, Qt::darkMagenta);

    testPalette.setColor(QPalette::Inactive, QPalette::LinkVisited, Qt::darkMagenta);

    // Update custom palette for this widget

    setPalette(testPalette);

}

/*!

    Destructor

*/

NmEditorTextEdit::~NmEditorTextEdit()

{

    NM_FUNCTION;

    HbStyleLoader::unregisterFilePath(FILE_PATH_WIDGETML);

    if (mCustomTextColor.first) {

		HbStyleLoader::unregisterFilePath(FILE_PATH_CSS_SECONDARY);    

    }

    else {

		HbStyleLoader::unregisterFilePath(FILE_PATH_CSS_DEFAULT);    

    }

}

/*!

	This slot applies custom text color for user - entered text

    It does not affect the text originally inserted into editor

 */

void NmEditorTextEdit::updateCustomTextColor()

{

    NM_FUNCTION;

    if (mCustomTextColor.first) {

        QTextCursor tcursor = textCursor();

        QTextCharFormat fmt;

        int pos = tcursor.position();

        if (pos > 0) {

            // If there isn't any user-made selection - apply custom color

            if (!tcursor.hasSelection() && !tcursor.hasComplexSelection()) {

                // Select last added char and set its color to custom

                if (tcursor.movePosition(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor, 1)

                    && tcursor.hasSelection()) {

                    fmt = tcursor.charFormat();

                    fmt.setForeground(mCustomTextColor.second);

                    tcursor.mergeCharFormat(fmt);

                }

            }

        }

        else {

            fmt = tcursor.charFormat();

            fmt.setForeground(mCustomTextColor.second);

            tcursor.mergeCharFormat(fmt);

            setTextCursor(tcursor);

        }

    }

}

/*!

   Sets flag is custom text color should be used and sets the custom color.

   Function does not affect the color of existing content, only text that will be entered later.

 */

void NmEditorTextEdit::setCustomTextColor(const QPair<bool, QColor> &customColor)

{

    NM_FUNCTION;

    mCustomTextColor = customColor;

}

/*!

    Reimplemented function \sa NmEditorTextEdit::setCustomTextColor(const QPair<bool, QColor> &customColor).

    \arg info about using of custom color

    \arg color to be used as custom. If \arg useCustom is set to false then color is not changed

 */

void NmEditorTextEdit::setCustomTextColor(bool useCustom, const QColor& color)

{   

    NM_FUNCTION;

    if (!mCustomTextColor.first && useCustom) {

        HbStyleLoader::unregisterFilePath(FILE_PATH_CSS_DEFAULT);    

        HbStyleLoader::registerFilePath(FILE_PATH_CSS_SECONDARY);

        mCustomTextColor.first = useCustom;

        mCustomTextColor.second = color;

    }		

}

/*!

 *  Return current custom color and if it must be used.

 *  

 *  \return Current custem color.

 */

QPair<bool, QColor> NmEditorTextEdit::customTextColor() const

{

    NM_FUNCTION;

    return mCustomTextColor;

}

/*!

 *  Returns the rectangle for the cursor.

 */

QRectF NmEditorTextEdit::rectForCursorPosition() const

{

    NM_FUNCTION;

    return HbTextEdit::rectForPosition(cursorPosition());

}