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#include "plugindialog_p.h"

#include "pluginmanager_p.h"

#include "qdesigner_integration_p.h"

#include <QtDesigner/QDesignerFormEditorInterface>

#include <QtDesigner/QDesignerCustomWidgetCollectionInterface>

#include <QtDesigner/QDesignerWidgetDataBaseInterface>

#include <QtGui/QStyle>

#include <QtGui/QHeaderView>

#include <QtGui/QPushButton>

#include <QtCore/QFileInfo>

#include <QtCore/QPluginLoader>

QT_BEGIN_NAMESPACE

namespace qdesigner_internal {

PluginDialog::PluginDialog(QDesignerFormEditorInterface *core, QWidget *parent)

    : QDialog(parent

#ifdef Q_WS_MAC

            , Qt::Tool

#endif

            ), m_core(core)

{

    ui.setupUi(this);

    ui.message->hide();

    const QStringList headerLabels(tr("Components"));

    ui.treeWidget->setAlternatingRowColors(false);

    ui.treeWidget->setSelectionMode(QAbstractItemView::NoSelection);

    ui.treeWidget->setHeaderLabels(headerLabels);

    ui.treeWidget->header()->hide();

    interfaceIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirOpenIcon),

                            QIcon::Normal, QIcon::On);

    interfaceIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirClosedIcon),

                            QIcon::Normal, QIcon::Off);

    featureIcon.addPixmap(style()->standardPixmap(QStyle::SP_FileIcon));

    setWindowTitle(tr("Plugin Information"));

    populateTreeWidget();

    if (qobject_cast<qdesigner_internal::QDesignerIntegration *>(m_core->integration())) {

        QPushButton *updateButton = new QPushButton(tr("Refresh"));

        const QString tooltip = tr("Scan for newly installed custom widget plugins.");

        updateButton->setToolTip(tooltip);

        updateButton->setWhatsThis(tooltip);

        connect(updateButton, SIGNAL(clicked()), this, SLOT(updateCustomWidgetPlugins()));

        ui.buttonBox->addButton(updateButton, QDialogButtonBox::ActionRole);

    }

}

void PluginDialog::populateTreeWidget()

{

    ui.treeWidget->clear();

    QDesignerPluginManager *pluginManager = m_core->pluginManager();

    const QStringList fileNames = pluginManager->registeredPlugins();

    if (!fileNames.isEmpty()) {

        QTreeWidgetItem *topLevelItem = setTopLevelItem(QLatin1String("Loaded Plugins"));

        QFont boldFont = topLevelItem->font(0);

        foreach (const QString &fileName, fileNames) {

            QPluginLoader loader(fileName);

            const QFileInfo fileInfo(fileName);

            QTreeWidgetItem *pluginItem = setPluginItem(topLevelItem, fileInfo.fileName(), boldFont);

            if (QObject *plugin = loader.instance()) {

                if (const QDesignerCustomWidgetCollectionInterface *c = qobject_cast<QDesignerCustomWidgetCollectionInterface*>(plugin)) {

                    foreach (const QDesignerCustomWidgetInterface *p, c->customWidgets())

                        setItem(pluginItem, p->name(), p->toolTip(), p->whatsThis(), p->icon());

                } else {

                    if (const QDesignerCustomWidgetInterface *p = qobject_cast<QDesignerCustomWidgetInterface*>(plugin))

                        setItem(pluginItem, p->name(), p->toolTip(), p->whatsThis(), p->icon());

                }

            }

        }

    }

    const QStringList notLoadedPlugins = pluginManager->failedPlugins();

    if (!notLoadedPlugins.isEmpty()) {

        QTreeWidgetItem *topLevelItem = setTopLevelItem(QLatin1String("Failed Plugins"));

        const QFont boldFont = topLevelItem->font(0);

        foreach (const QString &plugin, notLoadedPlugins) {

            const QString failureReason = pluginManager->failureReason(plugin);

            QTreeWidgetItem *pluginItem = setPluginItem(topLevelItem, plugin, boldFont);

            setItem(pluginItem, failureReason, failureReason, QString(), QIcon());

        }

    }

    if (ui.treeWidget->topLevelItemCount() == 0) {

        ui.label->setText(tr("Qt Designer couldn't find any plugins"));

        ui.treeWidget->hide();

    } else {

        ui.label->setText(tr("Qt Designer found the following plugins"));

    }

}

QIcon PluginDialog::pluginIcon(const QIcon &icon)

{

    if (icon.isNull())

        return QIcon(QLatin1String(":/trolltech/formeditor/images/qtlogo.png"));

    return icon;

}

QTreeWidgetItem* PluginDialog::setTopLevelItem(const QString &itemName)

{

    QTreeWidgetItem *topLevelItem = new QTreeWidgetItem(ui.treeWidget);

    topLevelItem->setText(0, itemName);

    ui.treeWidget->setItemExpanded(topLevelItem, true);

    topLevelItem->setIcon(0, style()->standardPixmap(QStyle::SP_DirOpenIcon));

    QFont boldFont = topLevelItem->font(0);

    boldFont.setBold(true);

    topLevelItem->setFont(0, boldFont);

    return topLevelItem;

}

QTreeWidgetItem* PluginDialog::setPluginItem(QTreeWidgetItem *topLevelItem,

                                             const QString &itemName, const QFont &font)

{

    QTreeWidgetItem *pluginItem = new QTreeWidgetItem(topLevelItem);

    pluginItem->setFont(0, font);

    pluginItem->setText(0, itemName);

    ui.treeWidget->setItemExpanded(pluginItem, true);

    pluginItem->setIcon(0, style()->standardPixmap(QStyle::SP_DirOpenIcon));

    return pluginItem;

}

void PluginDialog::setItem(QTreeWidgetItem *pluginItem, const QString &name,

                           const QString &toolTip, const QString &whatsThis, const QIcon &icon)

{

    QTreeWidgetItem *item = new QTreeWidgetItem(pluginItem);

    item->setText(0, name);

    item->setToolTip(0, toolTip);

    item->setWhatsThis(0, whatsThis);

    item->setIcon(0, pluginIcon(icon));

}

void  PluginDialog::updateCustomWidgetPlugins()

{

    if (qdesigner_internal::QDesignerIntegration *integration = qobject_cast<qdesigner_internal::QDesignerIntegration *>(m_core->integration())) {

        const int before = m_core->widgetDataBase()->count();

        integration->updateCustomWidgetPlugins();

        const int after = m_core->widgetDataBase()->count();

        if (after >  before) {

            ui.message->setText(tr("New custom widget plugins have been found."));

            ui.message->show();

        } else {

            ui.message->setText(QString());

        }

        populateTreeWidget();

    }

}

}

QT_END_NAMESPACE