Implement MappingTreeWidget

This is a rather large commit. It implements MappingTreeWidget using
MappingTreeModel unsurprisingly this uncovered some exciting bugs.

Fixes the following bugs in MappingTreeModel:
* use insertRows() and removeRows() when addings children, because
dataChanged() won't do it.
* don't use a prepared QSqlQuery when fetching children recursively.
This won't work because the query is still active when we invoke
ourselves again. Put the query on the stack instead
* Keep the model sorted.

Also add an entry for a MappingTreeEditor to the File-Menu.

1 files changed, 65 insertions, 0 deletions

diff --git a/mappingtreewidget.h b/mappingtreewidget.h
new file mode 100644
index 0000000..bd34576
--- /dev/null
+++ b/mappingtreewidget.h
@@ -0,0 +1,65 @@
+/*
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License
+  as published by the Free Software Foundation; either version
+  2 of the License, or (at your option) any later version.
+*/
+
+#ifndef MAPPINGTREEWIDGET_H
+#define MAPPINGTREEWIDGET_H
+
+#include <QWidget>
+#include <QTreeView>
+
+class MappingTreeView;
+class MappingTreeModel;
+class QComboBox;
+class QPushButton;
+class QSortFilterProxyModel;
+class QStringListModel;
+class QAction;
+
+class MappingTreeWidget : public QWidget {
+    Q_OBJECT
+    public:
+        explicit MappingTreeWidget(QWidget *parent = 0);
+
+    public slots:
+        void addChild();
+        void addType();
+        void deleteChild();
+        void deleteType();
+
+    protected:
+        virtual void hideEvent(QHideEvent *event);
+
+    private slots:
+        void typeChanged(QString type);
+        void editChild();
+
+    private:
+        const QModelIndex selected() const;
+        MappingTreeView *mTree;
+        MappingTreeModel *mModel;
+        QSortFilterProxyModel *mProxy;
+        QStringListModel *mTypesModel;
+        QComboBox *mTypeBox;
+        QPushButton *mAddChild;
+        QPushButton *mDeleteChild;
+        QPushButton *mAddType;
+        QPushButton *mDeleteType;
+        QLineEdit *mEdit;
+        QAction *mDeleteChildA;
+        QAction *mEditChildA;
+};
+
+class MappingTreeView : public QTreeView {
+    Q_OBJECT
+    public:
+        MappingTreeView(QWidget *parent = 0);
+
+    protected:
+        virtual void contextMenuEvent(QContextMenuEvent *e);
+};
+
+#endif // MAPPINGTREEWIDGET_H