Made FilesTreeWidget work

It wasn't as easy as I thought. Quite big changes:

1. I changed the query for setIds in FilesTreeModel. Initially it
executed a database query for every id. Changed it to WHERE
seriespart_id IN (ids). I didn't have a chance to test the first
version, but this one is blazing fast.

2. Fixed a recursio ad infinitum in FilesTreeModel. This happens if you
call data() from data(). Either use the *item or use a role different
from what you've been called.

3. Introduce a new function in SeriesTreeModel: QList<QVariant>
childrenColumnList. It returns a QList from the children values of the
given column.

4. Lot's of UI changes. Hide unneded columns, align the remaining ones
properly.

What doesn't work:
we can't let the database do the sorting of files. We need a proxy for
this.

1 files changed, 14 insertions, 0 deletions

diff --git a/seriestreemodel.cpp b/seriestreemodel.cpp
index 122c163..2cda1d0 100644
--- a/seriestreemodel.cpp
+++ b/seriestreemodel.cpp
@@ -141,6 +141,19 @@ bool SeriesTreeModel::setData(const QModelIndex &index, const QVariant &value, i
 	return false;
 }
 
+QList<QVariant> SeriesTreeModel::childrenColumnList(const QModelIndex &parent, int column) const{
+	if(!parent.isValid()){
+		return QList<QVariant>();
+	}
+	SmTreeItem *item = static_cast<SmTreeItem*>(parent.internalPointer());
+	QList<QVariant> retval;
+	for(int i = 0; i < item->childCount(); ++i){
+		SmTreeItem *child = item->child(i);
+		retval << child->data(column);
+	}
+	return retval;
+}
+
 QModelIndex SeriesTreeModel::findValue(const QVariant &value, const QModelIndex &parent, int column) const{
 	SmTreeItem *parentItem = root();
 	if(parent != QModelIndex()){
@@ -199,6 +212,7 @@ QFileInfoList SeriesTreeModel::findMovies(const QModelIndexList &from) const{
 	return retval;
 }
 
+
 bool SeriesTreeModel::deleteFromSeries(const QModelIndex &what){
 	int nodeType = what.data(TypeRole).toInt();
 	QSqlQuery *query = 0;