fixing segfaults on part if the part results in an empty category (BR #232)

[quassel.git] / src / client / treemodel.h

diff --git a/src/client/treemodel.h b/src/client/treemodel.h
index dc7e70d..e4b5ca3 100644 (file)
--- a/src/client/treemodel.h
+++ b/src/client/treemodel.h
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-07 by the Quassel IRC Team                         *
+ *   Copyright (C) 2005-08 by the Quassel Project                          *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,58 +18,122 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef _TREEMODEL_H_
-#define _TREEMODEL_H_
+#ifndef TREEMODEL_H
+#define TREEMODEL_H
 
 #include <QList>
+#include <QStringList>
 #include <QVariant>
-#include <QHash>
 #include <QAbstractItemModel>
 
+#include <QLinkedList> // needed for debug
+
 /*****************************************
  *  general item used in the Tree Model
  *****************************************/
-class TreeItem : public QObject {
+class AbstractTreeItem : public QObject {
   Q_OBJECT
-  Q_PROPERTY(uint id READ id)
 
 public:
-  TreeItem(const QList<QVariant> &data, TreeItem *parent = 0);
-  TreeItem(TreeItem *parent = 0);
-  virtual ~TreeItem();
+  enum TreeItemFlag {
+    NoTreeItemFlag = 0x00,
+    DeleteOnLastChildRemoved = 0x01
+  };
+  Q_DECLARE_FLAGS(TreeItemFlags, TreeItemFlag);
 
-  void appendChild(TreeItem *child);
-  void removeChild(int row);
+  AbstractTreeItem(AbstractTreeItem *parent = 0);
 
-  virtual quint64 id() const;
+  bool newChild(AbstractTreeItem *child);
+  bool newChilds(const QList<AbstractTreeItem *> &items);
 
-  TreeItem *child(int row) const;
-  TreeItem *childById(const uint &) const;
+  bool removeChild(int row);
+  inline bool removeChild(AbstractTreeItem *child) { return removeChild(child->row()); }
+  void removeAllChilds();
 
-  int childCount() const;
-  int columnCount() const;
+  bool reParent(AbstractTreeItem *newParent);
+    
+  AbstractTreeItem *child(int row) const;
 
-  virtual QVariant data(int column, int role) const;
+  int childCount(int column = 0) const;
+
+  virtual int columnCount() const = 0;
 
-  Qt::ItemFlags flags() const;
-  void setFlags(Qt::ItemFlags);
+  virtual QVariant data(int column, int role) const = 0;
+  virtual bool setData(int column, const QVariant &value, int role) = 0;
 
+  virtual inline Qt::ItemFlags flags() const { return _flags; }
+  virtual inline void setFlags(Qt::ItemFlags flags) { _flags = flags; }
+
+  inline AbstractTreeItem::TreeItemFlags treeItemFlags() const { return _treeItemFlags; }
+  inline void setTreeItemFlags(AbstractTreeItem::TreeItemFlags flags) { _treeItemFlags = flags; }
   int row() const;
-  TreeItem *parent();
+  inline AbstractTreeItem *parent() const { return qobject_cast<AbstractTreeItem *>(QObject::parent()); }
 
+  void dumpChildList();
 
-private slots:
-  void childDestroyed();
+signals:
+  void dataChanged(int column = -1);
 
+  void beginAppendChilds(int firstRow, int lastRow);
+  void endAppendChilds();
+  
+  void beginRemoveChilds(int firstRow, int lastRow);
+  void endRemoveChilds();
 
 protected:
-  QList<QVariant> itemData;
+  void customEvent(QEvent *event);
 
 private:
-  QList<TreeItem *> _childItems;
-  QHash<quint64, TreeItem *> _childHash; // uint to be compatible to qHash functions
-  TreeItem *_parentItem;
+  QList<AbstractTreeItem *> _childItems;
   Qt::ItemFlags _flags;
+  TreeItemFlags _treeItemFlags;
+
+  void removeChildLater(AbstractTreeItem *child);
+  inline void checkForDeletion() { if(treeItemFlags() & DeleteOnLastChildRemoved && childCount() == 0) parent()->removeChildLater(this); }
+};
+
+
+/*****************************************
+ * SimpleTreeItem
+ *****************************************/
+class SimpleTreeItem : public AbstractTreeItem {
+  Q_OBJECT
+
+public:
+  SimpleTreeItem(const QList<QVariant> &data, AbstractTreeItem *parent = 0);
+  virtual ~SimpleTreeItem();
+
+  virtual QVariant data(int column, int role) const;
+  virtual bool setData(int column, const QVariant &value, int role);
+
+  virtual int columnCount() const;
+
+private:
+  QList<QVariant> _itemData;
+};
+
+/*****************************************
+ * PropertyMapItem
+ *****************************************/
+class PropertyMapItem : public AbstractTreeItem {
+  Q_OBJECT
+
+public:
+  PropertyMapItem(const QStringList &propertyOrder, AbstractTreeItem *parent = 0);
+  PropertyMapItem(AbstractTreeItem *parent = 0);
+
+  virtual ~PropertyMapItem();
+  
+  virtual QVariant data(int column, int role) const;
+  virtual bool setData(int column, const QVariant &value, int role);
+
+  virtual QString toolTip(int column) const { Q_UNUSED(column) return QString(); }
+  virtual int columnCount() const;
+  
+  void appendProperty(const QString &property);
+
+private:
+  QStringList _propertyOrder;
 };
 
 
@@ -80,25 +144,61 @@ class TreeModel : public QAbstractItemModel {
   Q_OBJECT
 
 public:
+  enum myRoles {
+    SortRole = Qt::UserRole,
+    UserRole
+  };
+
   TreeModel(const QList<QVariant> &, QObject *parent = 0);
   virtual ~TreeModel();
 
-  QVariant data(const QModelIndex &index, int role) const;
+  virtual QVariant data(const QModelIndex &index, int role) const;
+  virtual bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+
   virtual Qt::ItemFlags flags(const QModelIndex &index) const;
   QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
+  
   QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
-  QModelIndex indexById(uint id, const QModelIndex &parent = QModelIndex()) const;
+  QModelIndex indexByItem(AbstractTreeItem *item) const;
+
   QModelIndex parent(const QModelIndex &index) const;
+
   int rowCount(const QModelIndex &parent = QModelIndex()) const;
   int columnCount(const QModelIndex &parent = QModelIndex()) const;
 
   virtual void clear();
 
+private slots:
+  void itemDataChanged(int column = -1);
+  
+  void beginAppendChilds(int firstRow, int lastRow);
+  void endAppendChilds();
+  
+  void beginRemoveChilds(int firstRow, int lastRow);
+  void endRemoveChilds();
+  
 protected:
-  bool removeRow(int row, const QModelIndex &parent = QModelIndex());
-  bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());
+  AbstractTreeItem *rootItem;
+
+private:
+  void connectItem(AbstractTreeItem *item);
   
-  TreeItem *rootItem;
+  struct ChildStatus {
+    QModelIndex parent;
+    int childCount;
+    int start;
+    int end;
+    inline ChildStatus(QModelIndex parent_, int cc_, int s_, int e_) : parent(parent_), childCount(cc_), start(s_), end(e_) {};
+  };
+  ChildStatus _childStatus;
+  int _aboutToRemoveOrInsert;
+
+private slots:
+  void debug_rowsAboutToBeInserted(const QModelIndex &parent, int start, int end);
+  void debug_rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
+  void debug_rowsInserted(const QModelIndex &parent, int start, int end);
+  void debug_rowsRemoved(const QModelIndex &parent, int start, int end);
+  void debug_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
 };
 
 #endif