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#include "interfaces.h"

#include "plugindialog.h"

#include <QPluginLoader>

#include <QStringList>

#include <QDir>

#include <QLabel>

#include <QGridLayout>

#include <QPushButton>

#include <QTreeWidget>

#include <QTreeWidgetItem>

#include <QHeaderView>

PluginDialog::PluginDialog(const QString &path, const QStringList &fileNames,

                           QWidget *parent) :

    QDialog(parent),

    label(new QLabel),

    treeWidget(new QTreeWidget),

    okButton(new QPushButton(tr("OK")))    

{

    treeWidget->setAlternatingRowColors(false);

    treeWidget->setSelectionMode(QAbstractItemView::NoSelection);

    treeWidget->setColumnCount(1);

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

    okButton->setDefault(true);

    connect(okButton, SIGNAL(clicked()), this, SLOT(close()));

    QGridLayout *mainLayout = new QGridLayout;

    mainLayout->setColumnStretch(0, 1);

    mainLayout->setColumnStretch(2, 1);

    mainLayout->addWidget(label, 0, 0, 1, 3);

    mainLayout->addWidget(treeWidget, 1, 0, 1, 3);

    mainLayout->addWidget(okButton, 2, 1);

    setLayout(mainLayout);

    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"));

    findPlugins(path, fileNames);

}

//! [0]

void PluginDialog::findPlugins(const QString &path,

                               const QStringList &fileNames)

{

    label->setText(tr("Plug & Paint found the following plugins\n"

                      "(looked in %1):")

                   .arg(QDir::toNativeSeparators(path)));

    const QDir dir(path);

    foreach (QObject *plugin, QPluginLoader::staticInstances())

        populateTreeWidget(plugin, tr("%1 (Static Plugin)")

                                   .arg(plugin->metaObject()->className()));

    foreach (QString fileName, fileNames) {

        QPluginLoader loader(dir.absoluteFilePath(fileName));

        QObject *plugin = loader.instance();

        if (plugin)

            populateTreeWidget(plugin, fileName);

    }

}

//! [0]

//! [1]

void PluginDialog::populateTreeWidget(QObject *plugin, const QString &text)

{

    QTreeWidgetItem *pluginItem = new QTreeWidgetItem(treeWidget);

    pluginItem->setText(0, text);

    treeWidget->setItemExpanded(pluginItem, true);

    QFont boldFont = pluginItem->font(0);

    boldFont.setBold(true);

    pluginItem->setFont(0, boldFont);

    if (plugin) {

        BrushInterface *iBrush = qobject_cast<BrushInterface *>(plugin);

        if (iBrush)

            addItems(pluginItem, "BrushInterface", iBrush->brushes());

        ShapeInterface *iShape = qobject_cast<ShapeInterface *>(plugin);

        if (iShape)

            addItems(pluginItem, "ShapeInterface", iShape->shapes());

        FilterInterface *iFilter =

                qobject_cast<FilterInterface *>(plugin);

        if (iFilter)

            addItems(pluginItem, "FilterInterface", iFilter->filters());

    }

}

//! [1]

void PluginDialog::addItems(QTreeWidgetItem *pluginItem,

                            const char *interfaceName,

                            const QStringList &features)

{

    QTreeWidgetItem *interfaceItem = new QTreeWidgetItem(pluginItem);

    interfaceItem->setText(0, interfaceName);

    interfaceItem->setIcon(0, interfaceIcon);

    foreach (QString feature, features) {

        if (feature.endsWith("..."))

            feature.chop(3);

        QTreeWidgetItem *featureItem = new QTreeWidgetItem(interfaceItem);

        featureItem->setText(0, feature);

        featureItem->setIcon(0, featureIcon);

    }

}