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#include "stylesheeteditor_p.h"

#include "csshighlighter_p.h"

#include "iconselector_p.h"

#include "qtgradientmanager.h"

#include "qtgradientviewdialog.h"

#include "qtgradientutils.h"

#include "qdesigner_integration_p.h"

#include "qdesigner_utils_p.h"

#include "abstractsettings_p.h"

#include <QtDesigner/QDesignerFormWindowInterface>

#include <QtDesigner/QDesignerFormWindowCursorInterface>

#include <QtDesigner/QDesignerFormEditorInterface>

#include <QtDesigner/QDesignerPropertySheetExtension>

#include <QtDesigner/QExtensionManager>

#include <QtCore/QSignalMapper>

#include <QtGui/QAction>

#include <QtGui/QColorDialog>

#include <QtGui/QDialogButtonBox>

#include <QtGui/QFontDialog>

#include <QtGui/QMenu>

#include <QtGui/QPushButton>

#include <QtGui/QTextDocument>

#include <QtGui/QToolBar>

#include <QtGui/QVBoxLayout>

#include "private/qcssparser_p.h"

QT_BEGIN_NAMESPACE

static const char *styleSheetProperty = "styleSheet";

static const char *StyleSheetDialogC = "StyleSheetDialog";

static const char *Geometry = "Geometry";

namespace qdesigner_internal {

StyleSheetEditor::StyleSheetEditor(QWidget *parent)

    : QTextEdit(parent)

{

    setTabStopWidth(fontMetrics().width(QLatin1Char(' '))*4);

    new CssHighlighter(document());

}

// --- StyleSheetEditorDialog

StyleSheetEditorDialog::StyleSheetEditorDialog(QDesignerFormEditorInterface *core, QWidget *parent, Mode mode):

    QDialog(parent),

    m_buttonBox(new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Cancel|QDialogButtonBox::Help)),

    m_editor(new StyleSheetEditor),

    m_validityLabel(new QLabel(tr("Valid Style Sheet"))),

    m_core(core),

    m_addResourceAction(new QAction(tr("Add Resource..."), this)),

    m_addGradientAction(new QAction(tr("Add Gradient..."), this)),

    m_addColorAction(new QAction(tr("Add Color..."), this)),

    m_addFontAction(new QAction(tr("Add Font..."), this))

{

    setWindowTitle(tr("Edit Style Sheet"));

    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);

    connect(m_buttonBox, SIGNAL(accepted()), this, SLOT(accept()));

    connect(m_buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

    connect(m_buttonBox, SIGNAL(helpRequested()), this, SLOT(slotRequestHelp()));

    m_buttonBox->button(QDialogButtonBox::Help)->setShortcut(QKeySequence::HelpContents);

    connect(m_editor, SIGNAL(textChanged()), this, SLOT(validateStyleSheet()));

    QToolBar *toolBar = new QToolBar;

    QGridLayout *layout = new QGridLayout;

    layout->addWidget(toolBar, 0, 0, 1, 2);

    layout->addWidget(m_editor, 1, 0, 1, 2);

    layout->addWidget(m_validityLabel, 2, 0, 1, 1);

    layout->addWidget(m_buttonBox, 2, 1, 1, 1);

    setLayout(layout);

    m_editor->setContextMenuPolicy(Qt::CustomContextMenu);

    connect(m_editor, SIGNAL(customContextMenuRequested(QPoint)),

                this, SLOT(slotContextMenuRequested(QPoint)));

    QSignalMapper *resourceActionMapper = new QSignalMapper(this);

    QSignalMapper *gradientActionMapper = new QSignalMapper(this);

    QSignalMapper *colorActionMapper = new QSignalMapper(this);

    resourceActionMapper->setMapping(m_addResourceAction, QString());

    gradientActionMapper->setMapping(m_addGradientAction, QString());

    colorActionMapper->setMapping(m_addColorAction, QString());

    connect(m_addResourceAction, SIGNAL(triggered()), resourceActionMapper, SLOT(map()));

    connect(m_addGradientAction, SIGNAL(triggered()), gradientActionMapper, SLOT(map()));

    connect(m_addColorAction, SIGNAL(triggered()), colorActionMapper, SLOT(map()));

    connect(m_addFontAction, SIGNAL(triggered()), this, SLOT(slotAddFont()));

    m_addResourceAction->setEnabled(mode == ModePerForm);

    const char * const resourceProperties[] = {

        "background-image",

        "border-image",

        "image",

        0

    };

    const char * const colorProperties[] = {

        "color",

        "background-color",

        "alternate-background-color",

        "border-color",

        "border-top-color",

        "border-right-color",

        "border-bottom-color",

        "border-left-color",

        "gridline-color",

        "selection-color",

        "selection-background-color",

        0

    };

    QMenu *resourceActionMenu = new QMenu(this);

    QMenu *gradientActionMenu = new QMenu(this);

    QMenu *colorActionMenu = new QMenu(this);

    for (int resourceProperty = 0; resourceProperties[resourceProperty]; ++resourceProperty) {

        QAction *action = resourceActionMenu->addAction(QLatin1String(resourceProperties[resourceProperty]));

        connect(action, SIGNAL(triggered()), resourceActionMapper, SLOT(map()));

        resourceActionMapper->setMapping(action, QLatin1String(resourceProperties[resourceProperty]));

    }

    for (int colorProperty = 0; colorProperties[colorProperty]; ++colorProperty) {

        QAction *gradientAction = gradientActionMenu->addAction(QLatin1String(colorProperties[colorProperty]));

        QAction *colorAction = colorActionMenu->addAction(QLatin1String(colorProperties[colorProperty]));

        connect(gradientAction, SIGNAL(triggered()), gradientActionMapper, SLOT(map()));

        connect(colorAction, SIGNAL(triggered()), colorActionMapper, SLOT(map()));

        gradientActionMapper->setMapping(gradientAction, QLatin1String(colorProperties[colorProperty]));

        colorActionMapper->setMapping(colorAction, QLatin1String(colorProperties[colorProperty]));

    }

    connect(resourceActionMapper, SIGNAL(mapped(QString)), this, SLOT(slotAddResource(QString)));

    connect(gradientActionMapper, SIGNAL(mapped(QString)), this, SLOT(slotAddGradient(QString)));

    connect(colorActionMapper, SIGNAL(mapped(QString)), this, SLOT(slotAddColor(QString)));

    m_addResourceAction->setMenu(resourceActionMenu);

    m_addGradientAction->setMenu(gradientActionMenu);

    m_addColorAction->setMenu(colorActionMenu);

    toolBar->addAction(m_addResourceAction);

    toolBar->addAction(m_addGradientAction);

    toolBar->addAction(m_addColorAction);

    toolBar->addAction(m_addFontAction);

    m_editor->setFocus();

    QDesignerSettingsInterface *settings = core->settingsManager();

    settings->beginGroup(QLatin1String(StyleSheetDialogC));

    if (settings->contains(QLatin1String(Geometry)))

        restoreGeometry(settings->value(QLatin1String(Geometry)).toByteArray());

    settings->endGroup();

}

StyleSheetEditorDialog::~StyleSheetEditorDialog()

{

    QDesignerSettingsInterface *settings = m_core->settingsManager();

    settings->beginGroup(QLatin1String(StyleSheetDialogC));

    settings->setValue(QLatin1String(Geometry), saveGeometry());

    settings->endGroup();

}

void StyleSheetEditorDialog::setOkButtonEnabled(bool v)

{

    m_buttonBox->button(QDialogButtonBox::Ok)->setEnabled(v);

    if (QPushButton *applyButton = m_buttonBox->button(QDialogButtonBox::Apply))

        applyButton->setEnabled(v);

}

void StyleSheetEditorDialog::slotContextMenuRequested(const QPoint &pos)

{

    QMenu *menu = m_editor->createStandardContextMenu();

    menu->addSeparator();

    menu->addAction(m_addResourceAction);

    menu->addAction(m_addGradientAction);

    menu->exec(mapToGlobal(pos));

    delete menu;

}

void StyleSheetEditorDialog::slotAddResource(const QString &property)

{

    const QString path = IconSelector::choosePixmapResource(m_core, m_core->resourceModel(), QString(), this);

    if (!path.isEmpty())

        insertCssProperty(property, QString(QLatin1String("url(%1)")).arg(path));

}

void StyleSheetEditorDialog::slotAddGradient(const QString &property)

{

    bool ok;

    const QGradient grad = QtGradientViewDialog::getGradient(&ok, m_core->gradientManager(), this);

    if (ok)

        insertCssProperty(property, QtGradientUtils::styleSheetCode(grad));

}

void StyleSheetEditorDialog::slotAddColor(const QString &property)

{

    const QColor color = QColorDialog::getColor(0xffffffff, this, QString(), QColorDialog::ShowAlphaChannel);

    if (!color.isValid())

        return;

    QString colorStr;

    if (color.alpha() == 255) {

        colorStr = QString(QLatin1String("rgb(%1, %2, %3)")).arg(

                color.red()).arg(color.green()).arg(color.blue());

    } else {

        colorStr = QString(QLatin1String("rgba(%1, %2, %3, %4)")).arg(

                color.red()).arg(color.green()).arg(color.blue()).arg(color.alpha());

    }

    insertCssProperty(property, colorStr);

}

void StyleSheetEditorDialog::slotAddFont()

{

    bool ok;

    QFont font = QFontDialog::getFont(&ok, this);

    if (ok) {

        QString fontStr;

        if (font.weight() != QFont::Normal) {

            fontStr += QString::number(font.weight());

            fontStr += QLatin1Char(' ');

        }

        switch (font.style()) {

        case QFont::StyleItalic:

            fontStr += QLatin1String("italic ");

            break;

        case QFont::StyleOblique:

            fontStr += QLatin1String("oblique ");

            break;

        default:

            break;

        }

        fontStr += QString::number(font.pointSize());

        fontStr += QLatin1String("pt \"");

        fontStr += font.family();

        fontStr += QLatin1Char('"');

        insertCssProperty(QLatin1String("font"), fontStr);

        QString decoration;

        if (font.underline())

            decoration += QLatin1String("underline");

        if (font.strikeOut()) {

            if (!decoration.isEmpty())

                decoration += QLatin1Char(' ');

            decoration += QLatin1String("line-through");

        }

        insertCssProperty(QLatin1String("text-decoration"), decoration);

    }

}

void StyleSheetEditorDialog::insertCssProperty(const QString &name, const QString &value)

{

    if (!value.isEmpty()) {

        QTextCursor cursor = m_editor->textCursor();

        if (!name.isEmpty()) {

            cursor.beginEditBlock();

            cursor.removeSelectedText();

            cursor.movePosition(QTextCursor::EndOfLine);

            // Simple check to see if we're in a selector scope

            const QTextDocument *doc = m_editor->document();

            const QTextCursor closing = doc->find(QLatin1String("}"), cursor, QTextDocument::FindBackward);

            const QTextCursor opening = doc->find(QLatin1String("{"), cursor, QTextDocument::FindBackward);

            const bool inSelector = !opening.isNull() && (closing.isNull() ||

                                                          closing.position() < opening.position());

            QString insertion;

            if (m_editor->textCursor().block().length() != 1)

                insertion += QLatin1Char('\n');

            if (inSelector)

                insertion += QLatin1Char('\t');

            insertion += name;

            insertion += QLatin1String(": ");

            insertion += value;

            insertion += QLatin1Char(';');

            cursor.insertText(insertion);

            cursor.endEditBlock();

        } else {

            cursor.insertText(value);

        }

    }

}

void StyleSheetEditorDialog::slotRequestHelp()

{

    QDesignerIntegration::requestHelp(m_core, QLatin1String("qt"),

                                      QLatin1String("stylesheet-reference.html"));

}

QDialogButtonBox * StyleSheetEditorDialog::buttonBox() const

{

   return m_buttonBox;

}

QString StyleSheetEditorDialog::text() const

{

    return m_editor->toPlainText();

}

void StyleSheetEditorDialog::setText(const QString &t)

{

    m_editor->setText(t);

}

bool StyleSheetEditorDialog::isStyleSheetValid(const QString &styleSheet)

{

    QCss::Parser parser(styleSheet);

    QCss::StyleSheet sheet;

    if (parser.parse(&sheet))

        return true;

    QString fullSheet = QLatin1String("* { ");

    fullSheet += styleSheet;

    fullSheet += QLatin1Char('}');

    QCss::Parser parser2(fullSheet);

    return parser2.parse(&sheet);

}

void StyleSheetEditorDialog::validateStyleSheet()

{

    const bool valid = isStyleSheetValid(m_editor->toPlainText());

    setOkButtonEnabled(valid);

    if (valid) {

        m_validityLabel->setText(tr("Valid Style Sheet"));

        m_validityLabel->setStyleSheet(QLatin1String("color: green"));

    } else {

        m_validityLabel->setText(tr("Invalid Style Sheet"));

        m_validityLabel->setStyleSheet(QLatin1String("color: red"));

    }

}

// --- StyleSheetPropertyEditorDialog

StyleSheetPropertyEditorDialog::StyleSheetPropertyEditorDialog(QWidget *parent,

                                               QDesignerFormWindowInterface *fw,

                                               QWidget *widget):

    StyleSheetEditorDialog(fw->core(), parent),

    m_fw(fw),

    m_widget(widget)

{

    Q_ASSERT(m_fw != 0);

    QPushButton *apply = buttonBox()->addButton(QDialogButtonBox::Apply);

    QObject::connect(apply, SIGNAL(clicked()), this, SLOT(applyStyleSheet()));

    QObject::connect(buttonBox(), SIGNAL(accepted()), this, SLOT(applyStyleSheet()));

    QDesignerPropertySheetExtension *sheet =

            qt_extension<QDesignerPropertySheetExtension*>(m_fw->core()->extensionManager(), m_widget);

    Q_ASSERT(sheet != 0);

    const int index = sheet->indexOf(QLatin1String(styleSheetProperty));

    const PropertySheetStringValue value = qVariantValue<PropertySheetStringValue>(sheet->property(index));

    setText(value.value());

}

void StyleSheetPropertyEditorDialog::applyStyleSheet()

{

    const PropertySheetStringValue value(text(), false);

    m_fw->cursor()->setWidgetProperty(m_widget, QLatin1String(styleSheetProperty), qVariantFromValue(value));

}

} // namespace qdesigner_internal

QT_END_NAMESPACE