/* ============================================================
*
* This file is a part of the rekonq project
*
* Copyright (C) 2008-2012 by Andrea Diamantini <adjam7 at gmail dot com>
* Copyright (C) 2009-2011 by Lionel Chauvin <megabigbug@yahoo.fr>
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
*
* ============================================================ */


// Self Includes
#include "findbar.h"
#include "findbar.moc"

// Local Includes
#include "mainwindow.h"
#include "webtab.h"
#include "webpage.h"

// KDE Includes
#include <KApplication>
#include <KIcon>
#include <KLineEdit>
#include <KLocalizedString>
#include <KPushButton>
#include <KColorScheme>

// Qt Includes
#include <QtCore/QTimer>

#include <QtGui/QCheckBox>
#include <QtGui/QHBoxLayout>
#include <QtGui/QKeyEvent>
#include <QtGui/QLabel>
#include <QtGui/QToolButton>


FindBar::FindBar(MainWindow *window)
    : QWidget(window)
    , m_mainWindow(window)
    , m_lineEdit(new KLineEdit(this))
    , m_hideTimer(new QTimer(this))
    , m_matchCase(new QCheckBox(i18n("&Match case"), this))
    , m_highlightAll(new QCheckBox(i18n("&Highlight all"), this))
{
    QHBoxLayout *layout = new QHBoxLayout;

    // cosmetic
    layout->setContentsMargins(2, 0, 2, 0);

    // hide button
    QToolButton *hideButton = new QToolButton(this);
    hideButton->setAutoRaise(true);
    hideButton->setIcon(KIcon("dialog-close"));
    connect(hideButton, SIGNAL(clicked()), this, SLOT(hide()));
    layout->addWidget(hideButton);
    layout->setAlignment(hideButton, Qt::AlignLeft | Qt::AlignTop);

    // hide timer
    connect(m_hideTimer, SIGNAL(timeout()), this, SLOT(hide()));
    m_hideTimer->setSingleShot(true);

    // label
    QLabel *label = new QLabel(i18n("Find:"));
    layout->addWidget(label);

    // lineEdit, focusProxy
    setFocusProxy(m_lineEdit);
    m_lineEdit->setMaximumWidth(250);
    connect(m_lineEdit, SIGNAL(textChanged(QString)), window, SLOT(find(QString)));
    layout->addWidget(m_lineEdit);

    // buttons
    KPushButton *findNext = new KPushButton(KIcon("go-down"), i18n("&Next"), this);
    KPushButton *findPrev = new KPushButton(KIcon("go-up"), i18n("&Previous"), this);
    connect(findNext, SIGNAL(clicked()), window, SLOT(findNext()));
    connect(findPrev, SIGNAL(clicked()), window, SLOT(findPrevious()));
    layout->addWidget(findNext);
    layout->addWidget(findPrev);

    // Case sensitivity. Deliberately set so this is off by default.
    m_matchCase->setCheckState(Qt::Unchecked);
    m_matchCase->setTristate(false);
    connect(m_matchCase, SIGNAL(toggled(bool)), window, SLOT(matchCaseUpdate()));
    layout->addWidget(m_matchCase);

    // Hightlight All. On by default
    m_highlightAll->setCheckState(Qt::Checked);
    m_highlightAll->setTristate(false);
    connect(m_highlightAll, SIGNAL(toggled(bool)), window, SLOT(updateHighlight()));
    layout->addWidget(m_highlightAll);

    // stretching widget on the left
    layout->addStretch();

    setLayout(layout);

    // we start off hidden
    hide();
}


void FindBar::keyPressEvent(QKeyEvent *event)
{
    if (event->key() == Qt::Key_Return)
    {
        if (event->modifiers() == Qt::ShiftModifier)
        {
            m_mainWindow->findPrevious();
        }
        else
        {
            m_mainWindow->findNext();
        }
    }
    QWidget::keyPressEvent(event);
}


bool FindBar::matchCase() const
{
    return m_matchCase->isChecked();
}


bool FindBar::highlightAllState() const
{
    return m_highlightAll->isChecked();
}


void FindBar::setVisible(bool visible)
{
    if (visible && m_mainWindow->currentTab()->page()->isOnRekonqPage() && m_mainWindow->currentTab()->part() != 0)
    {
        // findNext is the slot containing part integration code
        m_mainWindow->findNext();
        return;
    }

    QWidget::setVisible(visible);

    if (visible)
    {
        const QString selectedText = m_mainWindow->selectedText();
        if (!hasFocus() && !selectedText.isEmpty())
        {
            const QString previousText = m_lineEdit->text();
            m_lineEdit->setText(selectedText);

            if (m_lineEdit->text() != previousText)
                m_mainWindow->findPrevious();
            else
                m_mainWindow->updateHighlight();;
        }
        else if (selectedText.isEmpty())
        {
            emit searchString(m_lineEdit->text());
        }

        m_hideTimer->start(60000);

        m_lineEdit->setFocus();
        m_lineEdit->selectAll();
    }
    else
    {
        m_mainWindow->updateHighlight();;
        m_hideTimer->stop();
    }
}

void FindBar::notifyMatch(bool match)
{
    QPalette p = m_lineEdit->palette();
    KColorScheme colorScheme(p.currentColorGroup());

    if (m_lineEdit->text().isEmpty())
    {
        p.setColor(QPalette::Base, colorScheme.background(KColorScheme::NormalBackground).color());
    }
    else
    {
        if (match)
        {
            p.setColor(QPalette::Base, colorScheme.background(KColorScheme::PositiveBackground).color());
        }
        else
        {
            p.setColor(QPalette::Base, colorScheme.background(KColorScheme::NegativeBackground).color()); // previous were 247, 230, 230
        }
    }
    m_lineEdit->setPalette(p);
    m_hideTimer->start(60000);
}