Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
14352 changed files with 3176737 additions and 0 deletions
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+#ifndef FOREIGN_KEY_DELEGATE_HPP_
+#define FOREIGN_KEY_DELEGATE_HPP_
+
+#include <QStyledItemDelegate>
+#include <QScopedPointer>
+
+class CandidateKeyFilter;
+
+//
+// Class ForeignKeyDelegate
+//
+//	Item delegate for editing a foreign key item in a one or many
+//	to one relationship. A QComboBox is used as an item delegate
+//	for the edit role.
+//
+class ForeignKeyDelegate final
+  : public QStyledItemDelegate
+{
+public:
+  // many to many relationship
+  explicit ForeignKeyDelegate (QAbstractItemModel * referenced_model
+                               , int referenced_key_column
+                               , QObject * parent = nullptr
+                               , int referenced_key_role = Qt::EditRole);
+
+  // one to many (referenced to referencing) relationship
+  explicit ForeignKeyDelegate (QAbstractItemModel * referenced_model
+                               , QAbstractItemModel const * referencing_model
+                               , int referenced_key_column
+                               , int referencing_key_column
+                               , QObject * parent = nullptr
+                               , int referenced_key_role = Qt::EditRole
+                               , int referencing_key_role = Qt::EditRole);
+  ~ForeignKeyDelegate ();
+
+  QWidget * createEditor (QWidget * parent, QStyleOptionViewItem const&, QModelIndex const&) const override;
+
+private:
+  QScopedPointer<CandidateKeyFilter> candidate_key_filter_;
+};
+
+#endif