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, 42 insertions, 8 deletions

diff --git a/archivetreeview.cpp b/archivetreeview.cpp
index d59d723..211aa37 100644
--- a/archivetreeview.cpp
+++ b/archivetreeview.cpp
@@ -11,6 +11,7 @@
 #include <QVBoxLayout>
 #include <QItemSelectionModel>
 #include <QAbstractItemModel>
+#include <QItemSelection>
 
 #include "archivetreeview.h"
 #include "smmodelsingleton.h"
@@ -18,18 +19,22 @@
 #include "seriestreewidget.h"
 #include "filestreewidget.h"
 #include "filestreemodel.h"
+#include "seriestreemodel.h"
 
 ArchiveTreeView::ArchiveTreeView(QWidget *parent) : QWidget(parent){
 	// series view
 	mSeriesWidget = new SeriesTreeWidget;
 	QItemSelectionModel *selModel = mSeriesWidget->seriesTree()->selectionModel();
-	connect(selModel, SIGNAL(currentChanged(QModelIndex,QModelIndex)), this, SLOT(currentChanged()));
+	connect(selModel, SIGNAL(selectionChanged(QItemSelection,QItemSelection)), this, SLOT(currentChanged(QItemSelection,QItemSelection)));
+	mSeriesModel = static_cast<SeriesTreeModel*>(SmModelSingleton::instance()->model("SeriesModel"));
 
 	// files view
 	mFilesWidget = new FilesTreeWidget;
-	QAbstractItemModel *filesModel = SmModelSingleton::instance()->model("FilesTreeModel");
+	QAbstractItemModel *filesModel = SmModelSingleton::instance()->model("FilesModel");
 	mFilesModel = static_cast<FilesTreeModel*>(filesModel);
-
+	for(int i = 5; i < 11; ++i){
+		mFilesWidget->filesTree()->setColumnHidden(i, true);
+	}
 
 	// layout
 	QHBoxLayout *mainLayout = new QHBoxLayout;
@@ -40,13 +45,42 @@ ArchiveTreeView::ArchiveTreeView(QWidget *parent) : QWidget(parent){
 	setLayout(mainLayout);
 }
 
-void ArchiveTreeView::currentChanged(){
-	QModelIndexList sel = mSeriesWidget->seriesTree()->selectionModel()->selectedRows();
-	if(sel.isEmpty()){
+void ArchiveTreeView::currentChanged(const QItemSelection &selected, const QItemSelection &deselected){
+	foreach(QModelIndex i, deselected.indexes()){
+		mSelectedItems.removeAll(i);
+	}
+	foreach(QModelIndex i, selected.indexes()){
+		if(!mSelectedItems.contains(i)){
+			mSelectedItems << i;
+		}
+	}
+	if(mSelectedItems.isEmpty()){
 		return;
 	}
-	mSelectedPartIds.clear();
-	foreach(QModelIndex i, sel){
 
+	QList<int> selectedPartIds;
+	QModelIndexList realSel = mSeriesWidget->mapToSource(mSelectedItems);
+	foreach(QModelIndex i, realSel){
+		if(i.data(SeriesTreeModel::TypeRole).toInt() == SeriesTreeModel::Series){
+			QList<QVariant> ids = mSeriesModel->childrenColumnList(i, SeriesTreeModel::SeriesPartId);
+			foreach(QVariant id, ids){
+				int thisId = id.toInt();
+				if(!selectedPartIds.contains(thisId)){
+					selectedPartIds << thisId;
+				}
+			}
+		}
+		if(i.data(SeriesTreeModel::TypeRole).toInt() == SeriesTreeModel::Part){
+			int thisId = i.data(SeriesTreeModel::SeriesPartIdRole).toInt();
+			if(!selectedPartIds.contains(thisId)){
+				selectedPartIds << thisId;
+			}
+		}
 	}
+	mFilesModel->setIds(selectedPartIds);
+	mFilesWidget->filesTree()->expandAll();
+	mFilesWidget->filesTree()->resizeColumnToContents(0);
+	mFilesWidget->filesTree()->resizeColumnToContents(1);
+	mFilesWidget->filesTree()->resizeColumnToContents(2);
+	mFilesWidget->filesTree()->resizeColumnToContents(3);
 }