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** This file is part of Qt Creator
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** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** GNU Lesser General Public License Usage
**
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** License version 2.1 as published by the Free Software Foundation and
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**
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**
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#include "vcsbaseeditorparameterwidget.h"

#include <QtGui/QComboBox>
#include <QtGui/QToolButton>
#include <QtGui/QHBoxLayout>

#include <QtCore/QDebug>

namespace VCSBase {

VCSBaseEditorParameterWidget::ComboBoxItem::ComboBoxItem()
{
}

VCSBaseEditorParameterWidget::ComboBoxItem::ComboBoxItem(const QString &text,
                                                         const QVariant &val) :
    displayText(text),
    value(val)
{
}

class VCSBaseEditorParameterWidgetPrivate
{
public:
    VCSBaseEditorParameterWidgetPrivate() :
        m_layout(0), m_comboBoxOptionTemplate(QLatin1String("%1=%2")) {}

    QStringList m_baseArguments;
    QHBoxLayout *m_layout;
    QList<VCSBaseEditorParameterWidget::OptionMapping> m_optionMappings;
    QStringList m_comboBoxOptionTemplate;
};

/*!
    \class VCSBase::VCSBaseEditorParameterWidget

    \brief A toolbar-like widget for use with VCSBase::VCSBaseEditor::setConfigurationWidget()
    influencing for example the generation of VCS diff output.

    The widget maintains a list of command line arguments (starting from baseArguments())
    which are set according to the state of the inside widgets. A change signal is provided
    that should trigger the rerun of the VCS operation.
*/

VCSBaseEditorParameterWidget::VCSBaseEditorParameterWidget(QWidget *parent) :
    QWidget(parent), d(new VCSBaseEditorParameterWidgetPrivate)
{
    d->m_layout = new QHBoxLayout(this);
    d->m_layout->setContentsMargins(3, 0, 3, 0);
    d->m_layout->setSpacing(2);
    connect(this, SIGNAL(argumentsChanged()), this, SLOT(handleArgumentsChanged()));
}

VCSBaseEditorParameterWidget::~VCSBaseEditorParameterWidget()
{
}

QStringList VCSBaseEditorParameterWidget::baseArguments() const
{
    return d->m_baseArguments;
}

void VCSBaseEditorParameterWidget::setBaseArguments(const QStringList &b)
{
    d->m_baseArguments = b;
}

QStringList VCSBaseEditorParameterWidget::arguments() const
{
    // Compile effective arguments
    QStringList args = baseArguments();
    foreach (const OptionMapping &mapping, optionMappings())
        args += argumentsForOption(mapping);
    return args;
}

QToolButton *VCSBaseEditorParameterWidget::addToggleButton(const QString &option,
                                                           const QString &label,
                                                           const QString &toolTip)
{
    QToolButton *tb = new QToolButton;
    tb->setText(label);
    tb->setToolTip(toolTip);
    tb->setCheckable(true);
    connect(tb, SIGNAL(toggled(bool)), this, SIGNAL(argumentsChanged()));
    d->m_layout->addWidget(tb);
    d->m_optionMappings.append(OptionMapping(option, tb));
    return tb;
}

QToolButton *VCSBaseEditorParameterWidget::addIgnoreWhiteSpaceButton(const QString &option)
{
    return addToggleButton(option, msgIgnoreWhiteSpaceLabel(), msgIgnoreWhiteSpaceToolTip());
}

QToolButton *VCSBaseEditorParameterWidget::addIgnoreBlankLinesButton(const QString &option)
{
    return addToggleButton(option, msgIgnoreBlankLinesLabel(), msgIgnoreBlankLinesToolTip());
}

QComboBox *VCSBaseEditorParameterWidget::addComboBox(const QString &option,
                                                     const QList<ComboBoxItem> &items)
{
    QComboBox *cb = new QComboBox;
    foreach (const ComboBoxItem &item, items)
        cb->addItem(item.displayText, item.value);
    connect(cb, SIGNAL(currentIndexChanged(int)), this, SIGNAL(argumentsChanged()));
    d->m_layout->addWidget(cb);
    d->m_optionMappings.append(OptionMapping(option, cb));
    return cb;
}

/*!
    \brief This property holds the format (template) of assignable command line
    options (like --file=<file> for example)

    The option's name and its actual value are specified with place markers
    within the template :
      \li %{option} for the option
      \li %{value} for the actual value

    \code
    QStringList("%{option}=%{value}"); // eg --file=a.out
    QStringList() << "%{option}" << "%{value}"; // eg --file a.out (two distinct arguments)
    \endcode
*/
QStringList VCSBaseEditorParameterWidget::comboBoxOptionTemplate() const
{
    return d->m_comboBoxOptionTemplate;
}

void VCSBaseEditorParameterWidget::setComboBoxOptionTemplate(const QStringList &optTemplate) const
{
    d->m_comboBoxOptionTemplate = optTemplate;
}

QString VCSBaseEditorParameterWidget::msgIgnoreWhiteSpaceLabel()
{
    return tr("Ignore whitespace");
}

QString VCSBaseEditorParameterWidget::msgIgnoreWhiteSpaceToolTip()
{
    return tr("Ignore whitespace only changes");
}

QString VCSBaseEditorParameterWidget::msgIgnoreBlankLinesLabel()
{
    return tr("Ignore blank lines ");
}

QString VCSBaseEditorParameterWidget::msgIgnoreBlankLinesToolTip()
{
    return tr("Ignore changes in blank lines");
}

void VCSBaseEditorParameterWidget::executeCommand()
{
}

void VCSBaseEditorParameterWidget::handleArgumentsChanged()
{
    executeCommand();
}

VCSBaseEditorParameterWidget::OptionMapping::OptionMapping() :
    widget(0)
{
}

VCSBaseEditorParameterWidget::OptionMapping::OptionMapping(const QString &optName, QWidget *w) :
    optionName(optName), widget(w)
{
}

const QList<VCSBaseEditorParameterWidget::OptionMapping> &VCSBaseEditorParameterWidget::optionMappings() const
{
    return d->m_optionMappings;
}

QStringList VCSBaseEditorParameterWidget::argumentsForOption(const OptionMapping &mapping) const
{
    const QToolButton *tb = qobject_cast<const QToolButton *>(mapping.widget);
    if (tb != 0 && tb->isChecked())
        return QStringList(mapping.optionName);

    const QComboBox *cb = qobject_cast<const QComboBox *>(mapping.widget);
    if (cb != 0) {
        const QString value = cb->itemData(cb->currentIndex()).toString();
        QStringList args;
        foreach (const QString &t, d->m_comboBoxOptionTemplate) {
            QString a = t;
            a.replace(QLatin1String("%{option}"), mapping.optionName);
            a.replace(QLatin1String("%{value}"), value);
            args += a;
        }
        return args;
    }

    return QStringList();
}

} // namespace VCSBase