#include <QApplication>
#include <QFileIconProvider>
#include <QDesktopServices>
+#include <QLibrary>
+
+#define IS_DIR(ATTR) (((ATTR) & FILE_ATTRIBUTE_DIRECTORY) && (!((ATTR) & FILE_ATTRIBUTE_HIDDEN)))
+#define NO_DOT_OR_DOTDOT(STR) (wcscmp((STR), L".") && wcscmp((STR), L".."))
+
+typedef HANDLE (WINAPI *FindFirstFileExFun)(LPCWSTR lpFileName, FINDEX_INFO_LEVELS fInfoLevelId, LPVOID lpFindFileData, FINDEX_SEARCH_OPS fSearchOp, LPVOID lpSearchFilter, DWORD dwAdditionalFlags);
///////////////////////////////////////////////////////////////////////////////
// Dummy QFileIconProvider class
const QIcon m_musicIcon;
const QIcon m_moviesIcon;
const QIcon m_picturesIcon;
+ const QIcon m_heartIcon;
const QIcon m_emptyIcon;
const QString m_folderType;
const QString m_emptyType;
const QString m_musicDir;
const QString m_moviesDir;
const QString m_picturesDir;
+ const QString m_installDir;
};
QFileIconProviderEx::QFileIconProviderEx()
m_musicIcon(":/icons/music.png"),
m_moviesIcon(":/icons/film.png"),
m_picturesIcon(":/icons/picture.png"),
+ m_heartIcon(":/icons/heart.png"),
m_homeDir(QDir::fromNativeSeparators(QDesktopServices::storageLocation(QDesktopServices::HomeLocation))),
m_desktopDir(QDir::fromNativeSeparators(QDesktopServices::storageLocation(QDesktopServices::DesktopLocation))),
m_musicDir(QDir::fromNativeSeparators(QDesktopServices::storageLocation(QDesktopServices::MusicLocation))),
m_moviesDir(QDir::fromNativeSeparators(QDesktopServices::storageLocation(QDesktopServices::MoviesLocation))),
m_picturesDir(QDir::fromNativeSeparators(QDesktopServices::storageLocation(QDesktopServices::PicturesLocation))),
+ m_installDir(QDir::fromNativeSeparators(qApp->applicationDirPath())),
m_folderType("Folder")
{
/* Nothing to do! */
break;
}
}
- else if(!info.filePath().compare(m_homeDir, Qt::CaseInsensitive))
- {
- return m_homeIcon;
- }
- else if(!info.filePath().compare(m_desktopDir, Qt::CaseInsensitive))
- {
- return m_desktopIcon;
- }
- else if(!info.filePath().compare(m_musicDir, Qt::CaseInsensitive))
- {
- return m_musicIcon;
- }
- else if(!info.filePath().compare(m_moviesDir, Qt::CaseInsensitive))
- {
- return m_moviesIcon;
- }
- else if(!info.filePath().compare(m_picturesDir, Qt::CaseInsensitive))
- {
- return m_picturesIcon;
- }
else
{
- return m_folderIcon;
+ const QString filePath = info.filePath();
+ if(m_homeDir.compare(filePath, Qt::CaseInsensitive) == 0)
+ {
+ return m_homeIcon;
+ }
+ else if(m_desktopDir.compare(filePath, Qt::CaseInsensitive) == 0)
+ {
+ return m_desktopIcon;
+ }
+ else if(m_musicDir.compare(filePath, Qt::CaseInsensitive) == 0)
+ {
+ return m_musicIcon;
+ }
+ else if(m_moviesDir.compare(filePath, Qt::CaseInsensitive) == 0)
+ {
+ return m_moviesIcon;
+ }
+ else if(m_picturesDir.compare(filePath, Qt::CaseInsensitive) == 0)
+ {
+ return m_picturesIcon;
+ }
+ else if(m_installDir.compare(filePath, Qt::CaseInsensitive) == 0)
+ {
+ return m_heartIcon;
+ }
+ else
+ {
+ return m_folderIcon;
+ }
}
}
QFileSystemModelEx::~QFileSystemModelEx()
{
+ removeAllFromCache();
LAMEXP_DELETE(m_myIconProvider);
}
{
if(parent.isValid())
{
- return (QDir(QFileSystemModel::filePath(parent)).entryList(QDir::Dirs | QDir::NoDotAndDotDot).count() > 0);
+ return hasSubfoldersCached(filePath(parent).toLower()); //return (QDir(QFileSystemModel::filePath(parent)).entryList(QDir::Dirs | QDir::NoDotAndDotDot).count() > 0);
}
-
return true;
}
+
+void QFileSystemModelEx::fetchMore(const QModelIndex &parent)
+{
+ if(parent.isValid())
+ {
+ removeFromCache(filePath(parent).toLower());
+ }
+
+ QFileSystemModel::fetchMore(parent);
+}
+
+QModelIndex QFileSystemModelEx::index(const QString &path, int column) const
+{
+ QFileInfo info(path);
+ if(info.exists() && info.isDir())
+ {
+ QString fullPath = QDir::fromNativeSeparators(info.canonicalFilePath());
+ QStringList parts = fullPath.split('/', QString::SkipEmptyParts);
+ for(int i = 2; i <= parts.count(); i++)
+ {
+ QFileInfo currentPath(((QStringList) parts.mid(0, i)).join("/"));
+ if((!currentPath.exists()) || (!currentPath.isDir()) || currentPath.isHidden())
+ {
+ return QModelIndex();
+ }
+ }
+ QModelIndex index = QFileSystemModel::index(fullPath, column);
+ if(index.isValid())
+ {
+ QModelIndex temp = index;
+ while(temp.isValid())
+ {
+ removeFromCache(filePath(temp).toLower());
+ temp = temp.parent();
+ }
+ return index;
+ }
+ }
+ return QModelIndex();
+}
+
+void QFileSystemModelEx::flushCache(void)
+{
+ removeAllFromCache();
+}
+
+/* ------------------------ */
+/* STATIC FUNCTIONS BELOW */
+/* ------------------------ */
+
+QHash<const QString, bool> QFileSystemModelEx::s_hasSubfolderCache;
+QMutex QFileSystemModelEx::s_hasSubfolderMutex;
+
+void *QFileSystemModelEx::FindFirstFileExPtr = NULL;
+bool QFileSystemModelEx::FindFirstFileExInitialized = false;
+bool QFileSystemModelEx::FindFirstFileExInfoBasicOK = false;
+
+bool QFileSystemModelEx::hasSubfoldersCached(const QString &path)
+{
+ QMutexLocker lock(&s_hasSubfolderMutex);
+
+ if(s_hasSubfolderCache.contains(path))
+ {
+ return s_hasSubfolderCache.value(path);
+ }
+
+ bool bChildren = hasSubfolders(path);
+ s_hasSubfolderCache.insert(path, bChildren);
+ return bChildren;
+}
+
+void QFileSystemModelEx::removeFromCache(const QString &path)
+{
+ QMutexLocker lock(&s_hasSubfolderMutex);
+ s_hasSubfolderCache.remove(path);
+}
+
+void QFileSystemModelEx::removeAllFromCache(void)
+{
+ QMutexLocker lock(&s_hasSubfolderMutex);
+ s_hasSubfolderCache.clear();
+}
+
+bool QFileSystemModelEx::hasSubfolders(const QString &path)
+{
+ if(!FindFirstFileExInitialized)
+ {
+ QLibrary kernel32Lib("kernel32.dll");
+ if(kernel32Lib.load())
+ {
+ FindFirstFileExPtr = kernel32Lib.resolve("FindFirstFileExW");
+ const lamexp_os_version_t *osVersionNo = lamexp_get_os_version();
+ FindFirstFileExInfoBasicOK = LAMEXP_MIN_OS_VER(osVersionNo, 6, 1);
+ }
+ FindFirstFileExInitialized = true;
+ }
+
+ WIN32_FIND_DATAW findData;
+ bool bChildren = false;
+
+ HANDLE h = (FindFirstFileExPtr)
+ ? reinterpret_cast<FindFirstFileExFun>(FindFirstFileExPtr)(QWCHAR(QDir::toNativeSeparators(path + "/*")), (FindFirstFileExInfoBasicOK ? FindExInfoBasic : FindExInfoStandard), &findData, FindExSearchLimitToDirectories, NULL, 0)
+ : FindFirstFileW(QWCHAR(QDir::toNativeSeparators(path + "/*")), &findData);
+
+ if(h != INVALID_HANDLE_VALUE)
+ {
+ if(NO_DOT_OR_DOTDOT(findData.cFileName))
+ {
+ bChildren = IS_DIR(findData.dwFileAttributes);
+ }
+ while((!bChildren) && FindNextFile(h, &findData))
+ {
+ if(NO_DOT_OR_DOTDOT(findData.cFileName))
+ {
+ bChildren = IS_DIR(findData.dwFileAttributes);
+ }
+ }
+ FindClose(h);
+ }
+ else
+ {
+ DWORD err = GetLastError();
+ if((err == ERROR_NOT_SUPPORTED) || (err == ERROR_INVALID_PARAMETER))
+ {
+ qWarning("%s failed with error code #%u", FindFirstFileExPtr ? "FindFirstFileEx" : "FindFirstFile", err);
+ }
+ }
+
+ return bChildren;
+}
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