Created frontend for SeriesTreeModel::deleteFromSeries

Implemented frontend for SeriesTreeModel::deleteFromSeries. I hope
QPersistentModelIndexes work as advertised. From the qt-sources it seems
that a QPersistentModelIndex is automatically updated by
QAbstractItemModel when calling begin(Remove|Insert)Rows. Testing worked
out fine.

While at it I found a bug in SmTreeModel. removeRows has to be called
with (i - 1) instead of (i) to remove the correct nodes.

1 files changed, 54 insertions, 0 deletions

diff --git a/seriestreewidget.cpp b/seriestreewidget.cpp
index 071667d..553a534 100644
--- a/seriestreewidget.cpp
+++ b/seriestreewidget.cpp
@@ -15,6 +15,7 @@
 #include <QContextMenuEvent>
 #include <QMenu>
 #include <QAction>
+#include <QMessageBox>
 
 #include "seriestreewidget.h"
 #include "smubermodel.h"
@@ -75,7 +76,60 @@ void SeriesTreeWidget::deleteFromSeries(){
 	if(selected.isEmpty()){
 		return;
 	}
+	QList<QPersistentModelIndex> series;
+	QList<QPersistentModelIndex> parts;
+	foreach(QModelIndex s, selected){
+		QModelIndex real = mProxy->mapToSource(s);
+		if(real.data(SeriesTreeModel::TypeRole).toInt() == SeriesTreeModel::Series || real.data(SeriesTreeModel::TypeRole).toInt() == SeriesTreeModel::NewSeries){
+			series << QPersistentModelIndex(real);
+		}
+		if(real.data(SeriesTreeModel::TypeRole).toInt() == SeriesTreeModel::Part){
+			parts << QPersistentModelIndex(real);
+		}
+	}
+	QList<QPersistentModelIndex> removeParts;
+	foreach(QPersistentModelIndex s, parts){
+		if(series.contains(s.parent())){
+			removeParts << s;
+		}
+	}
+	foreach(QPersistentModelIndex s, removeParts){
+		parts.removeAll(s);
+	}
+	QFileInfoList files;
+	foreach(QPersistentModelIndex s, series){
+		files.append(mModel->findFiles(s));
+	}
 
+	QString message;
+	if(!files.isEmpty()){
+		message = QString(tr("<p>This operation will delete %1 file(s) permanently:</p>")).arg(files.count());
+		message.append(tr("<ul>"));
+		int ctr = 0;
+		foreach(QFileInfo f, files){
+			++ctr;
+			QString li = QString(tr("<li>%1</li>")).arg(f.absoluteFilePath());
+			message.append(li);
+			if(ctr == 20){
+				QString elide = QString(tr("<li>(%1 more files)</li>")).arg(files.count() - ctr);
+				message.append(elide);
+				break;
+			}
+		}
+		message.append(tr("</ul>"));
+		message.append(tr("<p>Continue?</p>"));
+	}else{
+		message = QString(tr("<p>This operation will delete no files. Continue?</p>"));
+	}
+	int retval = QMessageBox::critical(this, tr("Delete Series"), message, QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
+	if(retval == QMessageBox::Yes){
+		foreach(QPersistentModelIndex s, series){
+			mModel->deleteFromSeries(s);
+		}
+		foreach(QPersistentModelIndex s, parts){
+			mModel->deleteFromSeries(s);
+		}
+	}
 }
 
 void SeriesTreeWidget::filter(){