Prevent Quassel from crashing upon core dis- and reconnect and make the NickListWidgets

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

diff --git a/src/client/treemodel.cpp b/src/client/treemodel.cpp
index d84f0e0..fda1df4 100644 (file)
--- a/src/client/treemodel.cpp
+++ b/src/client/treemodel.cpp
@@ -1,11 +1,11 @@
 /***************************************************************************
- *   Copyright (C) 2005-07 by The Quassel Team                             *
+ *   Copyright (C) 2005-07 by the Quassel IRC Team                         *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   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.                                   *
+ *   (at your option) version 3.                                           *
  *                                                                         *
  *   This program is distributed in the hope that it will be useful,       *
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
@@ -18,51 +18,77 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#include "global.h"
 #include "treemodel.h"
 
 /*****************************************
  *  Buffer Items stored in the Tree Model
  *****************************************/
-TreeItem::TreeItem(const QList<QVariant> &data, TreeItem *parent) : QObject(parent) {
-  itemData = data;
-  parentItem = parent;
+TreeItem::TreeItem(const QList<QVariant> &data, TreeItem *parent)
+  : QObject(parent),
+    itemData(data),
+    _parentItem(parent),
+    _flags(Qt::ItemIsSelectable | Qt::ItemIsEnabled)
+{
 }
 
-TreeItem::TreeItem(TreeItem *parent) {
-  itemData = QList<QVariant>();
-  parentItem = parent;
+TreeItem::TreeItem(TreeItem *parent)
+  : QObject(parent),
+    itemData(QList<QVariant>()),
+    _parentItem(parent),
+    _flags(Qt::ItemIsSelectable | Qt::ItemIsEnabled)
+{
 }
 
 TreeItem::~TreeItem() {
-  qDeleteAll(childItems);
+  qDeleteAll(_childItems);
+}
+
+uint TreeItem::id() const {
+  return (uint)this;
 }
 
 void TreeItem::appendChild(TreeItem *item) {
-  childItems.append(item);
+  _childItems.append(item);
+  _childHash[item->id()] = item;
+  connect(item, SIGNAL(destroyed()),
+         this, SLOT(childDestroyed()));
 }
 
 void TreeItem::removeChild(int row) {
-  childItems.removeAt(row);
+  if(row >= _childItems.size())
+    return;
+  TreeItem *treeitem = _childItems.value(row);
+  _childItems.removeAt(row);
+  _childHash.remove(_childHash.key(treeitem));
 }
 
-TreeItem *TreeItem::child(int row) {
-  return childItems.value(row);
+TreeItem *TreeItem::child(int row) const {
+  if(row < _childItems.size())
+    return _childItems.value(row);
+  else
+    return 0;
+}
+
+TreeItem *TreeItem::childById(const uint &id) const {
+  if(_childHash.contains(id))
+    return _childHash.value(id);
+  else
+    return 0;
 }
 
 int TreeItem::childCount() const {
-  return childItems.count();
+  return _childItems.count();
 }
 
 int TreeItem::row() const {
-  if(parentItem)
-    return parentItem->childItems.indexOf(const_cast<TreeItem*>(this));
+  if(_parentItem)
+    return _parentItem->_childItems.indexOf(const_cast<TreeItem*>(this));
   else
     return 0;
 }
 
 TreeItem *TreeItem::parent() {
-  return parentItem;
+  return _parentItem;
 }
 
 int TreeItem::columnCount() const {
@@ -70,17 +96,33 @@ int TreeItem::columnCount() const {
 }
 
 QVariant TreeItem::data(int column, int role) const {
-  if(role == Qt::DisplayRole and column < itemData.count())
+  if(role == Qt::DisplayRole && column < itemData.count())
     return itemData[column];
   else
     return QVariant();
 }
 
+Qt::ItemFlags TreeItem::flags() const {
+  return _flags;
+}
+
+void TreeItem::setFlags(Qt::ItemFlags flags) {
+  _flags = flags;
+}
+
+void TreeItem::childDestroyed() {
+  TreeItem *item = static_cast<TreeItem*>(sender());
+  removeChild(item->row());
+}
+  
+
 
 /*****************************************
  * TreeModel
  *****************************************/
-TreeModel::TreeModel(const QList<QVariant> &data, QObject *parent) : QAbstractItemModel(parent) {
+TreeModel::TreeModel(const QList<QVariant> &data, QObject *parent)
+  : QAbstractItemModel(parent)
+{
   rootItem = new TreeItem(data, 0);
 }
 
@@ -106,12 +148,27 @@ QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent) con
     return QModelIndex();
 }
 
+QModelIndex TreeModel::indexById(uint id, const QModelIndex &parent) const {
+  TreeItem *parentItem; 
+  
+  if(!parent.isValid())
+    parentItem = rootItem;
+  else
+    parentItem = static_cast<TreeItem *>(parent.internalPointer());
+  
+  TreeItem *childItem = parentItem->childById(id);
+  if(childItem)
+    return createIndex(childItem->row(), 0, childItem);
+  else
+    return QModelIndex();
+}
+
 QModelIndex TreeModel::parent(const QModelIndex &index) const {
   if(!index.isValid())
     return QModelIndex();
   
   TreeItem *childItem = static_cast<TreeItem*>(index.internalPointer());
-  TreeItem *parentItem = childItem->parent();
+  TreeItem *parentItem = static_cast<TreeItem*>(childItem->parent());
   
   if(parentItem == rootItem)
     return QModelIndex();
@@ -121,9 +178,6 @@ QModelIndex TreeModel::parent(const QModelIndex &index) const {
 
 int TreeModel::rowCount(const QModelIndex &parent) const {
   TreeItem *parentItem;
-  if(parent.column() > 0)
-    return 0;
-  
   if(!parent.isValid())
     parentItem = rootItem;
   else
@@ -148,10 +202,12 @@ QVariant TreeModel::data(const QModelIndex &index, int role) const {
 }
 
 Qt::ItemFlags TreeModel::flags(const QModelIndex &index) const {
+  TreeItem *item;
   if(!index.isValid())
-    return 0;
+    item = rootItem;
   else
-    return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
+    item = static_cast<TreeItem *>(index.internalPointer());
+  return item->flags();
 }
 
 QVariant TreeModel::headerData(int section, Qt::Orientation orientation, int role) const {
@@ -165,8 +221,13 @@ bool TreeModel::removeRow(int row, const QModelIndex &parent) {
   if(row > rowCount(parent))
     return false;
   
+  TreeItem *item;
+  if(!parent.isValid())
+    item = rootItem;
+  else
+    item = static_cast<TreeItem*>(parent.internalPointer());
+  
   beginRemoveRows(parent, row, row);
-  TreeItem *item = static_cast<TreeItem*>(parent.internalPointer());
   item->removeChild(row);
   endRemoveRows();
   return true;
@@ -181,8 +242,15 @@ bool TreeModel::removeRows(int row, int count, const QModelIndex &parent) {
   if(row + count - 1 > rowCount(parent) || row < 0 || count < 0) 
     return false;
   
+  TreeItem *item;
+  if(!parent.isValid())
+    item = rootItem;
+  else
+    item = static_cast<TreeItem*>(parent.internalPointer());
+  
+  
   beginRemoveRows(parent, row, row + count - 1);
-  TreeItem *item = static_cast<TreeItem*>(parent.internalPointer());
+
   for(int i = row + count - 1; i >= 0; i--) {
     item->removeChild(i);
   }
@@ -191,5 +259,6 @@ bool TreeModel::removeRows(int row, int count, const QModelIndex &parent) {
 }
 
 void TreeModel::clear() {
-  removeRows(0, rowCount(), QModelIndex());
+  removeRows(0, rowCount());
+  reset();
 }