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#include "qfileiconprovider.h"
#include "qfileiconprovider_p.h"

#ifndef QT_NO_FILEICONPROVIDER
#include <qfileinfo.h>
#include <qapplication.h>
#include <qdir.h>
#include <qpixmapcache.h>

#include <qfunctions_p.h>
#include <qguiplatformplugin_p.h>

QT_BEGIN_NAMESPACE

/*!
  \class QFileIconProvider

  \brief The QFileIconProvider class provides file icons for the QDirModel and the QFileSystemModel classes.
*/

/*!
  \enum QFileIconProvider::IconType
  \value Computer
  \value Desktop
  \value Trashcan
  \value Network
  \value Drive
  \value Folder
  \value File
*/

QFileIconProviderPrivate::QFileIconProviderPrivate() :
    homePath(QDir::home().absolutePath()), useCustomDirectoryIcons(true)
{
}

void QFileIconProviderPrivate::setUseCustomDirectoryIcons(bool enable)
{
    useCustomDirectoryIcons = enable;
}

QIcon QFileIconProviderPrivate::getIcon(QStyle::StandardPixmap name) const
{
    switch (name) {
    case QStyle::SP_FileIcon:
        if (file.isNull())
            file = QApplication::style()->standardIcon(name);
        return file;
    case QStyle::SP_FileLinkIcon:
        if (fileLink.isNull())
            fileLink = QApplication::style()->standardIcon(name);
        return fileLink;
    case QStyle::SP_DirIcon:
        if (directory.isNull())
            directory = QApplication::style()->standardIcon(name);
        return directory;
    case QStyle::SP_DirLinkIcon:
        if (directoryLink.isNull())
            directoryLink = QApplication::style()->standardIcon(name);
        return directoryLink;
    case QStyle::SP_DriveHDIcon:
        if (harddisk.isNull())
            harddisk = QApplication::style()->standardIcon(name);
        return harddisk;
    case QStyle::SP_DriveFDIcon:
        if (floppy.isNull())
            floppy = QApplication::style()->standardIcon(name);
        return floppy;
    case QStyle::SP_DriveCDIcon:
        if (cdrom.isNull())
            cdrom = QApplication::style()->standardIcon(name);
        return cdrom;
    case QStyle::SP_DriveNetIcon:
        if (network.isNull())
            network = QApplication::style()->standardIcon(name);
        return network;
    case QStyle::SP_ComputerIcon:
        if (computer.isNull())
            computer = QApplication::style()->standardIcon(name);
        return computer;
    case QStyle::SP_DesktopIcon:
        if (desktop.isNull())
            desktop = QApplication::style()->standardIcon(name);
        return desktop;
    case QStyle::SP_TrashIcon:
        if (trashcan.isNull())
            trashcan = QApplication::style()->standardIcon(name);
        return trashcan;
    case QStyle::SP_DirHomeIcon:
        if (home.isNull())
            home = QApplication::style()->standardIcon(name);
        return home;
    default:
        return QIcon();
    }
    return QIcon();
}

/*!
  Constructs a file icon provider.
*/

QFileIconProvider::QFileIconProvider()
    : d_ptr(new QFileIconProviderPrivate)
{
}

/*!
  Destroys the file icon provider.

*/

QFileIconProvider::~QFileIconProvider()
{
}

/*!
  Returns an icon set for the given \a type.
*/

QIcon QFileIconProvider::icon(IconType type) const
{
    Q_D(const QFileIconProvider);
    switch (type) {
    case Computer:
        return d->getIcon(QStyle::SP_ComputerIcon);
    case Desktop:
        return d->getIcon(QStyle::SP_DesktopIcon);
    case Trashcan:
        return d->getIcon(QStyle::SP_TrashIcon);
    case Network:
        return d->getIcon(QStyle::SP_DriveNetIcon);
    case Drive:
        return d->getIcon(QStyle::SP_DriveHDIcon);
    case Folder:
        return d->getIcon(QStyle::SP_DirIcon);
    case File:
        return d->getIcon(QStyle::SP_FileIcon);
    default:
        break;
    };
    return QIcon();
}

/*!
  Returns an icon for the file described by \a info.
*/

QIcon QFileIconProvider::icon(const QFileInfo &info) const
{
    Q_D(const QFileIconProvider);

    QIcon platformIcon = qt_guiPlatformPlugin()->fileSystemIcon(info);
    if (!platformIcon.isNull())
        return platformIcon;

    if (info.isRoot())
        return d->getIcon(QStyle::SP_DriveHDIcon);
    if (info.isFile()) {
        if (info.isSymLink())
            return d->getIcon(QStyle::SP_FileLinkIcon);
        else
            return d->getIcon(QStyle::SP_FileIcon);
    }
  if (info.isDir()) {
    if (info.isSymLink()) {
      return d->getIcon(QStyle::SP_DirLinkIcon);
    } else {
      if (info.absoluteFilePath() == d->homePath) {
        return d->getIcon(QStyle::SP_DirHomeIcon);
      } else {
        return d->getIcon(QStyle::SP_DirIcon);
      }
    }
  }
  return QIcon();
}

/*!
  Returns the type of the file described by \a info.
*/

QString QFileIconProvider::type(const QFileInfo &info) const
{
    if (info.isRoot())
        return QApplication::translate("QFileDialog", "Drive");
    if (info.isFile()) {
        if (!info.suffix().isEmpty())
            return info.suffix() + QLatin1Char(' ') + QApplication::translate("QFileDialog", "File");
        return QApplication::translate("QFileDialog", "File");
    }

    if (info.isDir())
        return QApplication::translate("QFileDialog", "Folder", "All other platforms");
    // Konqueror - "Folder"
    // Nautilus  - "folder"

    if (info.isSymLink())
        return QApplication::translate("QFileDialog", "Shortcut", "All other platforms");
    // Konqueror - "Folder" or "TXT File" i.e. what it is pointing to
    // Nautilus  - "link to folder" or "link to object file", same as Konqueror

    return QApplication::translate("QFileDialog", "Unknown");
}

QT_END_NAMESPACE

#endif