Add cache operations

Implement functions to remove files from cached data, or clear it
completely. This may be necessary if something happened without us
knowing, e.g. a file was copied by another program.

1 files changed, 32 insertions, 0 deletions

diff --git a/filewidget.cpp b/filewidget.cpp
index e13fe77..3d2ff28 100644
--- a/filewidget.cpp
+++ b/filewidget.cpp
@@ -165,11 +165,20 @@ void FileWidget::createActions(){
     connect(mPreviewA, SIGNAL(triggered()), this, SLOT(preview()));
     mAddAsOriginA = new QAction(QIcon(":/butt_plug.png"), tr("Add as Origin..."), this);
     connect(mAddAsOriginA, SIGNAL(triggered()), this, SLOT(addAsOrigin()));
+    mRemoveFromCacheA = new QAction(QIcon(":/bizarre_amputee.png"), tr("Remove selected"), this);
+    connect(mRemoveFromCacheA, &QAction::triggered, this, &FileWidget::removeFromCache);
+    mClearCacheA = new QAction(QIcon(":/male_chastity_belt.png"), tr("Clear..."), this);
+    connect(mClearCacheA, &QAction::triggered, this, &FileWidget::clearCache);
 
     QMenu *fileMenu = new QMenu(tr("&File"));
     fileMenu->addAction(mSelDirA);
     fileMenu->addAction(mRefreshA);
     fileMenu->addSeparator();
+    QMenu *cacheMenu = new QMenu(tr("Cache"));
+    cacheMenu->addAction(mRemoveFromCacheA);
+    cacheMenu->addAction(mClearCacheA);
+    fileMenu->addMenu(cacheMenu);
+    fileMenu->addSeparator();
     fileMenu->addAction(Globals::instance()->action(Globals::QuitAction));
 
     QMenu *editMenu = new QMenu(tr("&Edit"));
@@ -633,6 +642,29 @@ void FileWidget::copySuccess(bool success, QString source){
     }
 }
 
+void FileWidget::removeFromCache(){
+    QModelIndexList curSel = mFileView->selectionModel()->selectedRows();
+    int count = 0;
+    for(const QModelIndex &i : curSel){
+        QString fullPath = i.data(FullPathRole).toString();
+        if(mFileCache.remove(fullPath)){
+            ++count;
+        }
+    }
+    QString msg = QString(tr("Removed %1 files from cache")).arg(QString::number(count));
+    gatherData();
+    emit statusMessage(msg);
+}
+
+void FileWidget::clearCache(){
+    int retval = QMessageBox::question(this, tr("Clear cache"), tr("Really empty the cache?"));
+    if(retval == QMessageBox::Yes){
+        mFileCache.clear();
+        gatherData();
+        emit statusMessage(tr("Cache cleared!"));
+    }
+}
+
 void FileWidget::fileSelectionChanged(const QItemSelection &selected, const QItemSelection &deselected){
     Q_UNUSED(selected);
     Q_UNUSED(deselected);