/***************************************************************************
- * 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 *
#include "treemodel.h"
+#include <QDebug>
+#include <QCoreApplication>
+
/*****************************************
- * Buffer Items stored in the Tree Model
+ * Abstract Items of a TreeModel
*****************************************/
-TreeItem::TreeItem(const QList<QVariant> &data, TreeItem *parent)
+AbstractTreeItem::AbstractTreeItem(AbstractTreeItem *parent)
: QObject(parent),
- itemData(data),
- _parentItem(parent),
_flags(Qt::ItemIsSelectable | Qt::ItemIsEnabled)
{
}
-TreeItem::TreeItem(TreeItem *parent)
- : QObject(parent),
- itemData(QList<QVariant>()),
- _parentItem(parent),
- _flags(Qt::ItemIsSelectable | Qt::ItemIsEnabled)
-{
+AbstractTreeItem::~AbstractTreeItem() {
}
-TreeItem::~TreeItem() {
- qDeleteAll(_childItems);
+quint64 AbstractTreeItem::id() const {
+ return qHash(this);
}
-quint64 TreeItem::id() const {
- return (quint64)this;
+bool AbstractTreeItem::newChild(AbstractTreeItem *item) {
+ // check if a child with that ID is already known
+ Q_ASSERT(childById(item->id()) == 0);
+
+ int newRow = childCount();
+ emit beginAppendChilds(newRow, newRow);
+ _childItems.append(item);
+ emit endAppendChilds();
+
+ return true;
}
-void TreeItem::appendChild(TreeItem *item) {
- _childItems.append(item);
- _childHash[item->id()] = item;
- connect(item, SIGNAL(destroyed()),
- this, SLOT(childDestroyed()));
+bool AbstractTreeItem::removeChild(int row) {
+ if(childCount() <= row)
+ return false;
+
+ child(row)->removeAllChilds();
+ emit beginRemoveChilds(row, row);
+ AbstractTreeItem *treeitem = _childItems.takeAt(row);
+ treeitem->deleteLater();
+ emit endRemoveChilds();
+
+ return true;
}
-void TreeItem::removeChild(int row) {
- if(row >= _childItems.size())
+bool AbstractTreeItem::removeChildById(const quint64 &id) {
+ const int numChilds = childCount();
+
+ for(int i = 0; i < numChilds; i++) {
+ if(_childItems[i]->id() == id)
+ return removeChild(i);
+ }
+
+ return false;
+}
+
+void AbstractTreeItem::removeAllChilds() {
+ const int numChilds = childCount();
+
+ if(numChilds == 0)
return;
- TreeItem *treeitem = _childItems.value(row);
- _childItems.removeAt(row);
- _childHash.remove(_childHash.key(treeitem));
+
+ AbstractTreeItem *child;
+
+ QList<AbstractTreeItem *>::iterator childIter;
+
+ childIter = _childItems.begin();
+ while(childIter != _childItems.end()) {
+ child = *childIter;
+ child->removeAllChilds();
+ childIter++;
+ }
+
+ emit beginRemoveChilds(0, numChilds - 1);
+ childIter = _childItems.begin();
+ while(childIter != _childItems.end()) {
+ child = *childIter;
+ childIter = _childItems.erase(childIter);
+ child->deleteLater();
+ }
+ emit endRemoveChilds();
}
-TreeItem *TreeItem::child(int row) const {
- if(row < _childItems.size())
- return _childItems.value(row);
- else
+AbstractTreeItem *AbstractTreeItem::child(int row) const {
+ if(childCount() <= row)
return 0;
+ else
+ return _childItems[row];
}
-TreeItem *TreeItem::childById(const uint &id) const {
- if(_childHash.contains(id))
- return _childHash.value(id);
- else
- return 0;
+AbstractTreeItem *AbstractTreeItem::childById(const quint64 &id) const {
+ const int numChilds = childCount();
+ for(int i = 0; i < numChilds; i++) {
+ if(_childItems[i]->id() == id)
+ return _childItems[i];
+ }
+ return 0;
}
-int TreeItem::childCount() const {
+int AbstractTreeItem::childCount() const {
return _childItems.count();
}
-int TreeItem::row() const {
- if(_parentItem)
- return _parentItem->_childItems.indexOf(const_cast<TreeItem*>(this));
+int AbstractTreeItem::row() const {
+ if(!parent())
+ return -1;
else
- return 0;
+ return parent()->_childItems.indexOf(const_cast<AbstractTreeItem *>(this));
}
-TreeItem *TreeItem::parent() {
- return _parentItem;
+AbstractTreeItem *AbstractTreeItem::parent() const {
+ return qobject_cast<AbstractTreeItem *>(QObject::parent());
}
-int TreeItem::columnCount() const {
- return itemData.count();
+Qt::ItemFlags AbstractTreeItem::flags() const {
+ return _flags;
}
-QVariant TreeItem::data(int column, int role) const {
- if(role == Qt::DisplayRole && column < itemData.count())
- return itemData[column];
- else
+void AbstractTreeItem::setFlags(Qt::ItemFlags flags) {
+ _flags = flags;
+}
+
+void AbstractTreeItem::dumpChildList() {
+ qDebug() << "==== Childlist for Item:" << this << id() << "====";
+ if(childCount() > 0) {
+ AbstractTreeItem *child;
+ QList<AbstractTreeItem *>::const_iterator childIter = _childItems.constBegin();
+ while(childIter != _childItems.constEnd()) {
+ child = *childIter;
+ qDebug() << "Row:" << child->row() << child << child->id() << child->data(0, Qt::DisplayRole);
+ childIter++;
+ }
+ }
+ qDebug() << "==== End Of Childlist ====";
+}
+
+/*****************************************
+ * SimpleTreeItem
+ *****************************************/
+SimpleTreeItem::SimpleTreeItem(const QList<QVariant> &data, AbstractTreeItem *parent)
+ : AbstractTreeItem(parent),
+ _itemData(data)
+{
+}
+
+SimpleTreeItem::~SimpleTreeItem() {
+}
+
+QVariant SimpleTreeItem::data(int column, int role) const {
+ if(column >= columnCount() || role != Qt::DisplayRole)
return QVariant();
+ else
+ return _itemData[column];
}
-Qt::ItemFlags TreeItem::flags() const {
- return _flags;
+bool SimpleTreeItem::setData(int column, const QVariant &value, int role) {
+ if(column > columnCount() || role != Qt::DisplayRole)
+ return false;
+
+ if(column == columnCount())
+ _itemData.append(value);
+ else
+ _itemData[column] = value;
+
+ emit dataChanged(column);
+ return true;
}
-void TreeItem::setFlags(Qt::ItemFlags flags) {
- _flags = flags;
+int SimpleTreeItem::columnCount() const {
+ return _itemData.count();
+}
+
+/*****************************************
+ * PropertyMapItem
+ *****************************************/
+PropertyMapItem::PropertyMapItem(const QStringList &propertyOrder, AbstractTreeItem *parent)
+ : AbstractTreeItem(parent),
+ _propertyOrder(propertyOrder)
+{
}
-void TreeItem::childDestroyed() {
- TreeItem *item = static_cast<TreeItem*>(sender());
- removeChild(item->row());
+PropertyMapItem::PropertyMapItem(AbstractTreeItem *parent)
+ : AbstractTreeItem(parent),
+ _propertyOrder(QStringList())
+{
}
+
+
+PropertyMapItem::~PropertyMapItem() {
+}
+
+QVariant PropertyMapItem::data(int column, int role) const {
+ if(column >= columnCount())
+ return QVariant();
+
+ switch(role) {
+ case Qt::ToolTipRole:
+ return toolTip(column);
+ case Qt::DisplayRole:
+ return property(_propertyOrder[column].toAscii());
+ default:
+ return QVariant();
+ }
+}
+
+bool PropertyMapItem::setData(int column, const QVariant &value, int role) {
+ if(column >= columnCount() || role != Qt::DisplayRole)
+ return false;
+
+ emit dataChanged(column);
+ return setProperty(_propertyOrder[column].toAscii(), value);
+}
+
+int PropertyMapItem::columnCount() const {
+ return _propertyOrder.count();
+}
+
+void PropertyMapItem::appendProperty(const QString &property) {
+ _propertyOrder << property;
+}
+
/*****************************************
* TreeModel
*****************************************/
TreeModel::TreeModel(const QList<QVariant> &data, QObject *parent)
- : QAbstractItemModel(parent)
+ : QAbstractItemModel(parent),
+ _childStatus(QModelIndex(), 0, 0, 0),
+ _aboutToRemoveOrInsert(false)
{
- rootItem = new TreeItem(data, 0);
+ rootItem = new SimpleTreeItem(data, 0);
+ connectItem(rootItem);
+
+ if(QCoreApplication::instance()->arguments().contains("--debugmodel")) {
+ connect(this, SIGNAL(rowsAboutToBeInserted(const QModelIndex &, int, int)),
+ this, SLOT(debug_rowsAboutToBeInserted(const QModelIndex &, int, int)));
+ connect(this, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
+ this, SLOT(debug_rowsAboutToBeRemoved(const QModelIndex &, int, int)));
+ connect(this, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
+ this, SLOT(debug_rowsInserted(const QModelIndex &, int, int)));
+ connect(this, SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
+ this, SLOT(debug_rowsRemoved(const QModelIndex &, int, int)));
+ }
}
TreeModel::~TreeModel() {
if(!hasIndex(row, column, parent))
return QModelIndex();
- TreeItem *parentItem;
+ AbstractTreeItem *parentItem;
if(!parent.isValid())
parentItem = rootItem;
else
- parentItem = static_cast<TreeItem*>(parent.internalPointer());
+ parentItem = static_cast<AbstractTreeItem *>(parent.internalPointer());
- TreeItem *childItem = parentItem->child(row);
+ AbstractTreeItem *childItem = parentItem->child(row);
+
if(childItem)
return createIndex(row, column, childItem);
else
return QModelIndex();
}
-QModelIndex TreeModel::indexById(uint id, const QModelIndex &parent) const {
- TreeItem *parentItem;
+QModelIndex TreeModel::indexById(quint64 id, const QModelIndex &parent) const {
+ AbstractTreeItem *parentItem;
if(!parent.isValid())
parentItem = rootItem;
else
- parentItem = static_cast<TreeItem *>(parent.internalPointer());
+ parentItem = static_cast<AbstractTreeItem *>(parent.internalPointer());
+
+ AbstractTreeItem *childItem = parentItem->childById(id);
- 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())
+QModelIndex TreeModel::indexByItem(AbstractTreeItem *item) const {
+ if(item == 0) {
+ qWarning() << "TreeModel::indexByItem(AbstractTreeItem *item) received NULL-Pointer";
return QModelIndex();
+ }
- TreeItem *childItem = static_cast<TreeItem*>(index.internalPointer());
- TreeItem *parentItem = static_cast<TreeItem*>(childItem->parent());
+ if(item == rootItem)
+ return QModelIndex();
+ else
+ return createIndex(item->row(), 0, item);
+}
+
+QModelIndex TreeModel::parent(const QModelIndex &index) const {
+ if(!index.isValid()) {
+ qWarning() << "TreeModel::parent(): has been asked for the rootItems Parent!";
+ return QModelIndex();
+ }
+ AbstractTreeItem *childItem = static_cast<AbstractTreeItem *>(index.internalPointer());
+ AbstractTreeItem *parentItem = childItem->parent();
+
+ Q_ASSERT(parentItem);
if(parentItem == rootItem)
return QModelIndex();
}
int TreeModel::rowCount(const QModelIndex &parent) const {
- TreeItem *parentItem;
+ AbstractTreeItem *parentItem;
if(!parent.isValid())
parentItem = rootItem;
else
- parentItem = static_cast<TreeItem*>(parent.internalPointer());
-
+ parentItem = static_cast<AbstractTreeItem*>(parent.internalPointer());
+
return parentItem->childCount();
}
int TreeModel::columnCount(const QModelIndex &parent) const {
- if(parent.isValid())
- return static_cast<TreeItem*>(parent.internalPointer())->columnCount();
- else
- return rootItem->columnCount();
+ Q_UNUSED(parent)
+ // since there the Qt Views don't draw more columns than the header has columns
+ // we can be lazy and simply return the count of header columns
+ // actually this gives us more freedom cause we don't have to ensure that a rows parent
+ // has equal or more columns than that row
+
+// if(parent.isValid()) {
+// AbstractTreeItem *child;
+// if(child = static_cast<AbstractTreeItem *>(parent.internalPointer())->child(parent.column(), parent.row()))
+// return child->columnCount();
+// else
+// return static_cast<AbstractTreeItem*>(parent.internalPointer())->columnCount();
+// } else {
+// return rootItem->columnCount();
+// }
+
+ return rootItem->columnCount();
}
QVariant TreeModel::data(const QModelIndex &index, int role) const {
if(!index.isValid())
return QVariant();
- TreeItem *item = static_cast<TreeItem*>(index.internalPointer());
+ AbstractTreeItem *item = static_cast<AbstractTreeItem *>(index.internalPointer());
return item->data(index.column(), role);
}
+bool TreeModel::setData(const QModelIndex &index, const QVariant &value, int role) {
+ if(!index.isValid())
+ return false;
+
+ AbstractTreeItem *item = static_cast<AbstractTreeItem *>(index.internalPointer());
+ return item->setData(index.column(), value, role);
+}
+
Qt::ItemFlags TreeModel::flags(const QModelIndex &index) const {
- TreeItem *item;
+ AbstractTreeItem *item;
if(!index.isValid())
item = rootItem;
else
- item = static_cast<TreeItem *>(index.internalPointer());
+ item = static_cast<AbstractTreeItem *>(index.internalPointer());
return item->flags();
}
return QVariant();
}
-bool TreeModel::removeRow(int row, const QModelIndex &parent) {
- if(row > rowCount(parent))
- return false;
+void TreeModel::itemDataChanged(int column) {
+ AbstractTreeItem *item = qobject_cast<AbstractTreeItem *>(sender());
+ QModelIndex leftIndex, rightIndex;
+
+ if(item == rootItem)
+ return;
+
+ if(column == -1) {
+ leftIndex = createIndex(item->row(), 0, item);
+ rightIndex = createIndex(item->row(), item->columnCount() - 1, item);
+ } else {
+ leftIndex = createIndex(item->row(), column, item);
+ rightIndex = leftIndex;
+ }
+
+ emit dataChanged(leftIndex, rightIndex);
+}
+
+void TreeModel::connectItem(AbstractTreeItem *item) {
+ connect(item, SIGNAL(dataChanged(int)),
+ this, SLOT(itemDataChanged(int)));
- TreeItem *item;
- if(!parent.isValid())
- item = rootItem;
- else
- item = static_cast<TreeItem*>(parent.internalPointer());
+ connect(item, SIGNAL(beginAppendChilds(int, int)),
+ this, SLOT(beginAppendChilds(int, int)));
+ connect(item, SIGNAL(endAppendChilds()),
+ this, SLOT(endAppendChilds()));
- beginRemoveRows(parent, row, row);
- item->removeChild(row);
- endRemoveRows();
- return true;
+ connect(item, SIGNAL(beginRemoveChilds(int, int)),
+ this, SLOT(beginRemoveChilds(int, int)));
+ connect(item, SIGNAL(endRemoveChilds()),
+ this, SLOT(endRemoveChilds()));
}
-bool TreeModel::removeRows(int row, int count, const QModelIndex &parent) {
- // check if there is work to be done
- if(count == 0)
- return true;
+void TreeModel::beginAppendChilds(int firstRow, int lastRow) {
+ AbstractTreeItem *parentItem = qobject_cast<AbstractTreeItem *>(sender());
+ if(!parentItem) {
+ qWarning() << "TreeModel::beginAppendChilds(): cannot append Childs to unknown parent";
+ return;
+ }
- // out of range check
- 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());
+ QModelIndex parent = indexByItem(parentItem);
+ Q_ASSERT(!_aboutToRemoveOrInsert);
+ _aboutToRemoveOrInsert = true;
+ _childStatus = ChildStatus(parent, rowCount(parent), firstRow, lastRow);
+ beginInsertRows(parent, firstRow, lastRow);
+}
+
+void TreeModel::endAppendChilds() {
+ AbstractTreeItem *parentItem = qobject_cast<AbstractTreeItem *>(sender());
+ if(!parentItem) {
+ qWarning() << "TreeModel::endAppendChilds(): cannot append Childs to unknown parent";
+ return;
+ }
+ Q_ASSERT(_aboutToRemoveOrInsert);
+ ChildStatus cs = _childStatus;
+ QModelIndex parent = indexByItem(parentItem);
+ Q_ASSERT(cs.parent == parent);
+ Q_ASSERT(rowCount(parent) == cs.childCount + cs.end - cs.start + 1);
+
+ _aboutToRemoveOrInsert = false;
+ for(int i = cs.start; i <= cs.end; i++) {
+ connectItem(parentItem->child(i));
+ }
+ endInsertRows();
+}
+
+void TreeModel::beginRemoveChilds(int firstRow, int lastRow) {
+ AbstractTreeItem *parentItem = qobject_cast<AbstractTreeItem *>(sender());
+ if(!parentItem) {
+ qWarning() << "TreeModel::beginRemoveChilds(): cannot append Childs to unknown parent";
+ return;
+ }
+ QModelIndex parent = indexByItem(parentItem);
+ Q_ASSERT(firstRow <= lastRow);
+ Q_ASSERT(parentItem->childCount() > lastRow);
+ Q_ASSERT(!_aboutToRemoveOrInsert);
- beginRemoveRows(parent, row, row + count - 1);
+ _aboutToRemoveOrInsert = true;
+ _childStatus = ChildStatus(parent, rowCount(parent), firstRow, lastRow);
+ beginRemoveRows(parent, firstRow, lastRow);
+}
- for(int i = row + count - 1; i >= 0; i--) {
- item->removeChild(i);
+void TreeModel::endRemoveChilds() {
+ AbstractTreeItem *parentItem = qobject_cast<AbstractTreeItem *>(sender());
+ if(!parentItem) {
+ qWarning() << "TreeModel::endRemoveChilds(): cannot append Childs to unknown parent";
+ return;
}
+ Q_ASSERT(_aboutToRemoveOrInsert);
+ ChildStatus cs = _childStatus;
+ QModelIndex parent = indexByItem(parentItem);
+ Q_ASSERT(cs.parent == parent);
+ Q_ASSERT(rowCount(parent) == cs.childCount - cs.end + cs.start - 1);
+
+ _aboutToRemoveOrInsert = false;
endRemoveRows();
- return true;
}
void TreeModel::clear() {
- removeRows(0, rowCount());
- reset();
+ rootItem->removeAllChilds();
+}
+
+void TreeModel::debug_rowsAboutToBeInserted(const QModelIndex &parent, int start, int end) {
+ // qDebug() << "debug_rowsAboutToBeInserted" << parent << parent.internalPointer() << parent.data().toString() << rowCount(parent) << start << end;
+}
+
+void TreeModel::debug_rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
+ AbstractTreeItem *parentItem;
+ parentItem = static_cast<AbstractTreeItem *>(parent.internalPointer());
+ if(!parentItem)
+ parentItem = rootItem;
+ qDebug() << "#" << parent << parentItem << parent.data().toString() << rowCount(parent) << start << end;
+
+ QModelIndex child;
+ AbstractTreeItem *childItem;
+ for(int i = end; i >= start; i--) {
+ child = parent.child(i, 0);
+ childItem = parentItem->child(i);
+ Q_ASSERT(childItem);
+ qDebug() << ">>>" << i << child << childItem->id() << child.data().toString();
+ }
+}
+
+void TreeModel::debug_rowsInserted(const QModelIndex &parent, int start, int end) {
+ AbstractTreeItem *parentItem;
+ parentItem = static_cast<AbstractTreeItem *>(parent.internalPointer());
+ if(!parentItem)
+ parentItem = rootItem;
+ qDebug() << "#" << parent << parentItem << parent.data().toString() << rowCount(parent) << start << end;
+
+ QModelIndex child;
+ AbstractTreeItem *childItem;
+ for(int i = start; i <= end; i++) {
+ child = parent.child(i, 0);
+ childItem = parentItem->child(i);
+ Q_ASSERT(childItem);
+ qDebug() << "<<<" << i << child << childItem->id() << child.data().toString();
+ }
+}
+
+void TreeModel::debug_rowsRemoved(const QModelIndex &parent, int start, int end) {
+ // qDebug() << "debug_rowsRemoved" << parent << parent.internalPointer() << parent.data().toString() << rowCount(parent) << start << end;
}
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