fix: should now be able to show property dialog for all supported files

app/playlistmanager.cpp

@@ -0,0 +1,153 @@
+#include "playlistmanager.h"
+
+#include <QCollator>
+#include <QDir>
+#include <QFileInfo>
+#include <QUrl>
+
+PlaylistManager::PlaylistManager(PlaylistType type, QObject *parent)
+    : QObject(parent)
+    , m_type(type)
+{
+
+}
+
+PlaylistManager::~PlaylistManager()
+{
+
+}
+
+void PlaylistManager::setPlaylistType(PlaylistManager::PlaylistType type)
+{
+    m_type = type;
+}
+
+PlaylistManager::PlaylistType PlaylistManager::playlistType() const
+{
+    return m_type;
+}
+
+void PlaylistManager::clear()
+{
+    m_currentIndex = -1;
+    m_playlist.clear();
+}
+
+void PlaylistManager::setPlaylist(const QList<QUrl> &urls)
+{
+    m_playlist = urls;
+}
+
+void PlaylistManager::setCurrentFile(const QString & filePath)
+{
+    QFileInfo info(filePath);
+    QDir dir(info.path());
+    QString && currentFileName = info.fileName();
+
+    switch (playlistType()) {
+    case PL_SAMEFOLDER: {
+        if (dir.path() == m_currentDir) {
+            int index = indexOf(filePath);
+            m_currentIndex = index == -1 ? appendFile(filePath) : index;
+        } else {
+            QStringList entryList = dir.entryList({"*.jpg", "*.jpeg", "*.jfif", "*.png", "*.gif", "*.svg", "*.bmp"},
+                                                  QDir::Files | QDir::NoSymLinks, QDir::NoSort);
+
+            QCollator collator;
+            collator.setNumericMode(true);
+
+            std::sort(entryList.begin(), entryList.end(), collator);
+
+            clear();
+
+            int index = -1;
+            for (int i = 0; i < entryList.count(); i++) {
+                const QString & fileName = entryList.at(i);
+                const QString & oneEntry = dir.absoluteFilePath(fileName);
+                const QUrl & url = QUrl::fromLocalFile(oneEntry);
+                m_playlist.append(url);
+                if (fileName == currentFileName) {
+                    index = i;
+                }
+            }
+            m_currentIndex = index == -1 ? appendFile(filePath) : index;
+            m_currentDir = dir.path();
+        }
+        break;
+    }
+    case PL_USERPLAYLIST:{
+        int index = indexOf(filePath);
+        m_currentIndex = index == -1 ? appendFile(filePath) : index;
+        break;
+    }
+    default:
+        break;
+    }
+
+    emit loaded(m_playlist.count());
+}
+
+void PlaylistManager::setCurrentIndex(int index)
+{
+    if (index < 0 || index >= m_playlist.count()) return;
+    m_currentIndex = index;
+}
+
+int PlaylistManager::appendFile(const QString &filePath)
+{
+    int index = m_playlist.length();
+    m_playlist.append(QUrl::fromLocalFile(filePath));
+
+    return index;
+}
+
+int PlaylistManager::indexOf(const QString &filePath)
+{
+    const QUrl & url = QUrl::fromLocalFile(filePath);
+    return m_playlist.indexOf(url);
+}
+
+std::tuple<int, QString> PlaylistManager::previousFile() const
+{
+    int count = m_playlist.count();
+    if (count == 0) return std::make_tuple(-1, QString());
+
+    int index = m_currentIndex - 1 < 0 ? count - 1 : m_currentIndex - 1;
+    return std::make_tuple(index, m_playlist.at(index).toLocalFile());
+}
+
+std::tuple<int, QString> PlaylistManager::nextFile() const
+{
+    int count = m_playlist.count();
+    if (count == 0) return std::make_tuple(-1, QString());
+
+    int index = m_currentIndex + 1 == count ? 0 : m_currentIndex + 1;
+    return std::make_tuple(index, m_playlist.at(index).toLocalFile());
+}
+
+std::tuple<int, QString> PlaylistManager::currentFile() const
+{
+    if (m_playlist.count() == 0) return std::make_tuple(-1, QString());
+
+    return std::make_tuple(m_currentIndex, m_playlist.at(m_currentIndex).toLocalFile());
+}
+
+std::tuple<int, QUrl> PlaylistManager::currentFileUrl() const
+{
+    if (m_playlist.count() == 0) return std::make_tuple(-1, QUrl());
+
+    return std::make_tuple(m_currentIndex, m_playlist.at(m_currentIndex));
+}
+
+QList<QUrl> PlaylistManager::convertToUrlList(const QStringList &files)
+{
+    QList<QUrl> urlList;
+    for (const QString & str : qAsConst(files)) {
+        QUrl url = QUrl::fromLocalFile(str);
+        if (url.isValid()) {
+            urlList.append(url);
+        }
+    }
+
+    return urlList;
+}