/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbInput module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbinputsctkeyboard.h"

#include "hbinputsctkeyboard_p.h"

#include <math.h>

#include <hbdeviceprofile.h>

#include <hbinputmethod.h>

#include <hbinputkeymap.h>

#include <hbinpututils.h>

#include <hbframedrawer.h>

#include <hbinputsettingproxy.h>

#include <hbmainwindow.h>

#include "hbinputbuttongroup.h"

#include "hbinputbutton.h"

const qreal HbPortraitKeyboardHeightInUnits = 45.9;

const qreal HbPortraitKeyboardWidthInUnits = 53.8;

const qreal HbLandscapeKeyboardHeightInUnits = 33.7;

const qreal HbLandscapeKeyboardWidthInUnits = 95.5;

const int HbSctPortraitNumberOfRows = 5;

const int HbSctPortraitNumberOfColumns = 5;

const int HbPortraitButtonKeyCodeTable[HbSctPortraitNumberOfRows *HbSctPortraitNumberOfColumns] = {

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeDelete,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeAlphabet,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodePageChange,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeSmiley,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCustom

};

const int HbSctLandscapeNumberOfRows = 4;

const int HbSctLandscapeNumberOfColumns = 10;

const int HbLandscapeButtonKeyCodeTable[HbSctLandscapeNumberOfRows *HbSctLandscapeNumberOfColumns] = {

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeSmiley,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeDelete,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeEnter,

    HbInputButton::ButtonKeyCodePageChange,

    HbInputButton::ButtonKeyCodeAlphabet,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeSpace,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCharacter,

    HbInputButton::ButtonKeyCodeCustom

};

const int HbSctSpaceMarker = 0xE118;

const int HbSctEnterMarker = 0xE125;

#if defined(Q_OS_SYMBIAN)

const QChar HbSctSpaceGlyph = 0xF800;

const QChar HbSctEnterGlyph = 0xF801;

#else

const QChar HbSctSpaceGlyph = ' ';

const QChar HbSctEnterGlyph = ' ';

#endif

/*!

@proto

@hbinput

\class HbSctKeyboard

\brief Touch keyboard for special characters

Implements special character keyboard. The keyboard knows how to set up button titles according to

given key map data object and it also supports editor specific custom buttons.

\sa HbInputVkbWidget

*/

HbSctKeyboardPrivate::HbSctKeyboardPrivate()

    : mType(HbKeyboardSctPortrait), mColumns(0), mRows(0),

      mCharacterButtons(0), mPages(0), mActivePage(0)

{

}

HbSctKeyboardPrivate::~HbSctKeyboardPrivate()

{

}

void HbSctKeyboardPrivate::init()

{

    Q_Q(HbSctKeyboard);

    HbInputVkbWidgetPrivate::init();

    Qt::Orientation orientation = Qt::Horizontal;

    if (q->mainWindow()) {

        orientation = q->mainWindow()->orientation();

    }

    if (HbInputSettingProxy::instance()->activeKeyboard(orientation) & HbQwertyKeyboardMask) {

        mType = HbKeyboardSctLandscape;

    } else {

        mType = HbKeyboardSctPortrait;

    }

    HbInputButtonGroup *buttonGroup = static_cast<HbInputButtonGroup *>(q->contentItem());

    if (buttonGroup) {

        mColumns = HbSctPortraitNumberOfColumns;

        mRows = HbSctPortraitNumberOfRows;

        if (mType == HbKeyboardSctLandscape) {

            mColumns = HbSctLandscapeNumberOfColumns;

            mRows = HbSctLandscapeNumberOfRows;

            buttonGroup->setButtonPreviewEnabled(HbInputSettingProxy::instance()->isCharacterPreviewForQwertyEnabled());

        }

        buttonGroup->setGridSize(QSize(mColumns, mRows));

        int key = 0;

        QList<HbInputButton *> buttons;

        for (int i = 0; i < mColumns * mRows; ++i) {

            HbInputButton *item = new HbInputButton(keyCode(i), QPoint(key % mColumns, key / mColumns));

            buttons.append(item);

            if (keyCode(i) == HbInputButton::ButtonKeyCodeCharacter) {

                ++mCharacterButtons;

            } else if (keyCode(i) == HbInputButton::ButtonKeyCodeSpace) {

                item->setSize(QSize(2, 1));

                ++key;

            } else if (keyCode(i) == HbInputButton::ButtonKeyCodeDelete &&

                       (mType == HbKeyboardSctPortrait || mType == HbKeyboardSctEmail || mType == HbKeyboardSctUrl )) {

                // Portrait SCT has different delete icon from the default one

                item->setIcon(HbIcon(HbInputButtonIconDelete2), HbInputButton::ButtonIconIndexPrimary);

            } else if (keyCode(i) == HbInputButton::ButtonKeyCodeAlphabet) {

                // Button that is used to return to normal keypad should be shown as latched

                item->setState(HbInputButton::ButtonStateLatched);

                if (mType == HbKeyboardSctPortrait || mType == HbKeyboardSctEmail || mType == HbKeyboardSctUrl ) {

                    // Portrait SCT has different symbol icon from the default one

                    item->setIcon(HbIcon(HbInputButtonIconSymbol2), HbInputButton::ButtonIconIndexPrimary);

                }

            }

            ++key;

        }

        buttonGroup->setButtons(buttons);

        QObject::connect(buttonGroup, SIGNAL(buttonPressed(const QKeyEvent &)), q, SLOT(sendKeyPressEvent(const QKeyEvent &)));

        QObject::connect(buttonGroup, SIGNAL(buttonDoublePressed(const QKeyEvent &)), q, SLOT(sendKeyDoublePressEvent(const QKeyEvent &)));

        QObject::connect(buttonGroup, SIGNAL(buttonReleased(const QKeyEvent &)), q, SLOT(sendKeyReleaseEvent(const QKeyEvent &)));

        QObject::connect(buttonGroup, SIGNAL(buttonLongPressed(const QKeyEvent &)), q, SLOT(sendLongPressEvent(const QKeyEvent &)));

        QObject::connect(buttonGroup, SIGNAL(pressedButtonChanged(const QKeyEvent &, const QKeyEvent &)), q, SLOT(sendKeyChangeEvent(const QKeyEvent &, const QKeyEvent &)));

    }

    QObject::connect(q, SIGNAL(flickEvent(HbInputVkbWidget::HbFlickDirection)), buttonGroup, SLOT(cancelButtonPress()));

}

int HbSctKeyboardPrivate::keyCode(int buttonId)

{

    if (mType == HbKeyboardSctLandscape) {

        return HbLandscapeButtonKeyCodeTable[buttonId];

    } else {

    }

}

void HbSctKeyboardPrivate::applyEditorConstraints()

{

    Q_Q(HbSctKeyboard);

    HbInputFocusObject *focusedObject = mOwner->focusObject();

    HbInputButtonGroup *buttonGroup = static_cast<HbInputButtonGroup *>(q->contentItem());

    applyEditorConstraints(focusedObject, buttonGroup);

}

void HbSctKeyboardPrivate::applyEditorConstraints(HbInputFocusObject *focusedObject, HbInputButtonGroup *buttonGroup)

{

    if (!focusedObject) {

        return;

    }

    if (buttonGroup) {

        QList<HbInputButton*> buttons = buttonGroup->buttons();

        for (int i = 0; i < buttons.count(); ++i) {

            HbInputButton *item = buttons.at(i);

            HbInputButton::HbInputButtonState state = item->state();

            if (keyCode(i) == HbInputButton::ButtonKeyCodeCharacter) {

                QString data = item->text(HbInputButton::ButtonTextIndexPrimary);

                if (data.isEmpty() || !focusedObject->characterAllowedInEditor(data.at(0))) {

                    state = HbInputButton::ButtonStateDisabled;

                } else if (item->state() == HbInputButton::ButtonStateDisabled) {

                    state = HbInputButton::ButtonStateReleased;

                }

            } else if (keyCode(i) == HbInputButton::ButtonKeyCodeSmiley) {

                if (focusedObject->editorInterface().isNumericEditor() ||

                    !isSmileysEnabled()) {

                    state = HbInputButton::ButtonStateDisabled;

                } else if (item->state() == HbInputButton::ButtonStateDisabled) {

                    state = HbInputButton::ButtonStateReleased;

                }

            } else if (keyCode(i) == HbInputButton::ButtonKeyCodeAlphabet) {

                state = HbInputButton::ButtonStateLatched;

            } else if (keyCode(i) == HbInputButton::ButtonKeyCodeSpace) {

                bool allowed = focusedObject->characterAllowedInEditor(QChar(' '));

                if (!allowed) {

                    state = HbInputButton::ButtonStateDisabled;

                } else if (item->state() == HbInputButton::ButtonStateDisabled) {

                    state = HbInputButton::ButtonStateReleased; 

                }

            }

            item->setState(state);

        }

        buttonGroup->setButtons(buttons);

    }

}

void HbSctKeyboardPrivate::updateKeyCodes()

{

    Q_Q(HbSctKeyboard);

    HbInputFocusObject *focusedObject = mOwner->focusObject();

    if (!focusedObject) {

        return;

    }

    Qt::Orientation orientation = Qt::Horizontal;

    if (q->mainWindow()) {

        orientation = q->mainWindow()->orientation();

    }

    if (HbInputSettingProxy::instance()->activeKeyboard(orientation) & HbQwertyKeyboardMask){

        mType = HbKeyboardSctLandscape;

    } else if (focusedObject && focusedObject->editorInterface().editorClass() == HbInputEditorClassEmail &&

               mKeymap->keyboard(HbKeyboardSctEmail)) {

        mType = HbKeyboardSctEmail;

    } else if (focusedObject && focusedObject->editorInterface().editorClass() == HbInputEditorClassUrl &&

               mKeymap->keyboard(HbKeyboardSctUrl)) {

        mType = HbKeyboardSctUrl;

    } else {

        mType = HbKeyboardSctPortrait;

    }

    mPages = 0;

    const HbKeyboardMap *keyboardMap = mKeymap->keyboard(q->keyboardType());

    if (keyboardMap) {

        mPages = (int)ceil((float)countActiveKeys() / mCharacterButtons);

    }

    mFlickAnimation = mPages > 1;

    HbInputButtonGroup *buttonGroup = static_cast<HbInputButtonGroup *>(q->contentItem());

    if (buttonGroup) {

        int key = keyAtIndex(mActivePage * mCharacterButtons);

        QList<HbInputButton *> buttons = buttonGroup->buttons();

        for (int i = 0; i < buttons.count(); ++i) {

            if (keyCode(i) == HbInputButton::ButtonKeyCodeCharacter) {

                HbInputButton *item = buttons.at(i);

                if (keyboardMap && key < keyboardMap->keys.count()) {

                    // Replace space and enter markers with correct keycodes

                    if (focusedObject->characterAllowedInEditor(keyboardMap->keys.at(key)->characters(HbModifierNone).at(0)) || mType == HbKeyboardSctLandscape){

                        if (keyboardMap->keys.at(key)->keycode.unicode() == HbSctSpaceMarker) {

                            item->setKeyCode(HbInputButton::ButtonKeyCodeSpace);

                        } else if (keyboardMap->keys.at(key)->keycode.unicode() == HbSctEnterMarker) {

                            item->setKeyCode(HbInputButton::ButtonKeyCodeEnter);

                        } else {

                            item->setKeyCode(keyboardMap->keys.at(key)->keycode.unicode());

                        }

                    } else {

                        i--;

                    }

                } else {

                    item->setKeyCode(-1);

                }

                ++key;

            }

        }

    }

    applyEditorConstraints();           

}

void HbSctKeyboardPrivate::updateButtons()

{

    Q_Q(HbSctKeyboard);

    HbInputFocusObject *focusedObject = mOwner->focusObject();

    if (!focusedObject) {

        return;

    }

    HbInputButtonGroup *buttonGroup = static_cast<HbInputButtonGroup *>(q->contentItem());

    if (buttonGroup) {

        int key = keyAtIndex(mActivePage * mCharacterButtons);

        QList<HbInputButton *> buttons = buttonGroup->buttons();

        for (int i = 0; i < buttons.count(); ++i) {

            if (keyCode(i) == HbInputButton::ButtonKeyCodeCharacter) {

                HbInputButton *item = buttons.at(i);

                const HbKeyboardMap *keyboardMap = mKeymap->keyboard(q->keyboardType());

                if (keyboardMap && key < keyboardMap->keys.count() && keyboardMap->keys.at(key)->characters(HbModifierNone) != QString("")) {

                    if (focusedObject->characterAllowedInEditor(keyboardMap->keys.at(key)->characters(HbModifierNone).at(0)) || mType == HbKeyboardSctLandscape){

                        QString keydata = keyboardMap->keys.at(key)->characters(HbModifierNone);

                        // Replace space and enter markers with correct glyphs.

                        // These only exist in symbian fonts, so if we are not using symbian, use blank.

                        if (keydata.at(0) == HbSctSpaceMarker) {

                            item->setText(HbSctSpaceGlyph, HbInputButton::ButtonTextIndexPrimary);

                        } else if (keydata.at(0) == HbSctEnterMarker) {

                            item->setText(HbSctEnterGlyph, HbInputButton::ButtonTextIndexPrimary);

                        } else {

                            item->setText(keydata.at(0), HbInputButton::ButtonTextIndexPrimary);

                        }

                    } else {

                        i--;

                    }

                } else {

                    item->setText("", HbInputButton::ButtonTextIndexPrimary);

                }

                ++key;

            } else if (keyCode(i) == HbInputButton::ButtonKeyCodePageChange) {

                HbInputButton *item = buttons.at(i);

                item->setText(QString::number(mActivePage+1) + '/' + QString::number(mPages), HbInputButton::ButtonTextIndexSecondaryFirstRow);

            }

        }

        buttonGroup->setButtons(buttons);

    }

}

int HbSctKeyboardPrivate::keyAtIndex(int index)

{

    Q_Q(HbSctKeyboard);

    const HbKeyboardMap *keyboardMap = mKeymap->keyboard(q->keyboardType());

    if (mType == HbKeyboardSctLandscape){

        return index;

    }

    int totalKeys=0;

    HbInputFocusObject *focusedObject = mOwner->focusObject();

    HbInputButtonGroup *buttonGroup = static_cast<HbInputButtonGroup*>(q->contentItem());    

    if (buttonGroup) {

        if (keyboardMap && totalKeys < keyboardMap->keys.count()) {

            while (index){

                if (focusedObject->characterAllowedInEditor(keyboardMap->keys.at(totalKeys)->characters(HbModifierNone).at(0))){

                    index--;                    

                }

                totalKeys++;

            }            

        }

    }

    return totalKeys;

}

int HbSctKeyboardPrivate::countActiveKeys()

{

    Q_Q(HbSctKeyboard);

    const HbKeyboardMap *keyboardMap = mKeymap->keyboard(q->keyboardType());

    if (mType == HbKeyboardSctLandscape){

        return keyboardMap->keys.count();

    }

    int totalKeys=0;

    HbInputFocusObject *focusedObject = mOwner->focusObject();

    HbInputButtonGroup *buttonGroup = static_cast<HbInputButtonGroup*>(q->contentItem());

    if (buttonGroup) {

        if (keyboardMap && totalKeys < keyboardMap->keys.count()) {

            foreach(HbMappedKey *key, keyboardMap->keys){  

                if (focusedObject->characterAllowedInEditor(key->characters(HbModifierNone).at(0))){

                    totalKeys++;

                }

            }    

        }

    }

    return totalKeys;

}

/*!

Constructs the object. owner is the owning input method implementation. Keymap

is key mapping data to be used to display button texts. Key mapping data can be

changed later (for example when the input language changes) by calling

setKeymap.

*/

HbSctKeyboard::HbSctKeyboard(HbInputMethod *owner, const HbKeymap *keymap, QGraphicsItem *parent)

    : HbInputVkbWidget(*new HbSctKeyboardPrivate, parent)

{

    if (!owner) {

        return;

    }

    Q_D(HbSctKeyboard);

    d->mOwner = owner;

    setKeymap(keymap);

    const HbKeyboardMap *keyboardMap = keymap->keyboard(keyboardType());

    if (keyboardMap) {

        d->mPages = (int)ceil((float)d->countActiveKeys() / d->mCharacterButtons);

    }

    d->mFlickAnimation = d->mPages > 1;

    if (d->mType == HbKeyboardSctLandscape) {

        connect(HbInputSettingProxy::instance(), SIGNAL(characterPreviewStateForQwertyChanged(bool)), this, SLOT(updateButtonPreviewStatus(bool)));

    }

    connect(this, SIGNAL(flickEvent(HbInputVkbWidget::HbFlickDirection)), this, SLOT(changePage(HbInputVkbWidget::HbFlickDirection)));

}

/*!

Constructs the object. owner is the owning input method implementation. Keymap

is key mapping data to be used to display button texts. Key mapping data can be

changed later (for example when the input language changes) by calling

setKeymap.

*/

HbSctKeyboard::HbSctKeyboard(HbSctKeyboardPrivate &dd, HbInputMethod *owner,

                             const HbKeymap *keymap, QGraphicsItem *parent)

    : HbInputVkbWidget(dd, parent)

{

    if (!owner) {

        return;

    }

    Q_D(HbSctKeyboard);

    d->mOwner = owner;

    setKeymap(keymap);

    const HbKeyboardMap *keyboardMap = keymap->keyboard(keyboardType());

    if (keyboardMap) {

        d->mPages = (int)ceil((float)d->countActiveKeys() / d->mCharacterButtons);

    }

    d->mFlickAnimation = d->mPages > 1;

    if (d->mType == HbKeyboardSctLandscape) {

        connect(HbInputSettingProxy::instance(), SIGNAL(characterPreviewStateForQwertyChanged(bool)), this, SLOT(updateButtonPreviewStatus(bool)));

    }

    connect(this, SIGNAL(flickEvent(HbInputVkbWidget::HbFlickDirection)), this, SLOT(changePage(HbInputVkbWidget::HbFlickDirection)));

}

/*!

Destructs the object.

*/

HbSctKeyboard::~HbSctKeyboard()

{

}

/*!

Returns keyboard type.

*/