/***************************************************************************
- * Copyright (C) 2005-07 by The Quassel 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 *
* 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 *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
-#include "global.h"
#include "treemodel.h"
+#include <QDebug>
+
/*****************************************
- * Buffer Items stored in the Tree Model
+ * Abstract Items of a TreeModel
*****************************************/
-TreeItem::TreeItem(const QList<QVariant> &data, TreeItem *parent) : QObject(parent) {
- itemData = data;
- parentItem = parent;
+AbstractTreeItem::AbstractTreeItem(AbstractTreeItem *parent)
+ : QObject(parent),
+ _flags(Qt::ItemIsSelectable | Qt::ItemIsEnabled)
+{
+}
+
+AbstractTreeItem::~AbstractTreeItem() {
+}
+
+quint64 AbstractTreeItem::id() const {
+ return (quint64)this;
+}
+
+int AbstractTreeItem::defaultColumn() const {
+ // invalid QModelIndexes aka rootNodes get their Childs stuffed into column -1
+ // all others to 0
+ if(parent() == 0)
+ return -1;
+ else
+ return 0;
}
-TreeItem::TreeItem(TreeItem *parent) {
- itemData = QList<QVariant>();
- parentItem = parent;
+bool AbstractTreeItem::newChild(int column, AbstractTreeItem *item) {
+ if(column >= columnCount()) {
+ qWarning() << "AbstractTreeItem::newChild() cannot append Child to not existing column!" << this << column;
+ return false;
+ }
+
+ if(!_childItems.contains(column)) {
+ _childItems[column] = QList<AbstractTreeItem *>();
+ }
+
+ int newRow = _childItems[column].count();
+ emit beginAppendChilds(column, newRow, newRow);
+ _childItems[column].append(item);
+ emit endAppendChilds();
+
+ return true;
+}
+
+bool AbstractTreeItem::newChild(AbstractTreeItem *item) {
+ return newChild(defaultColumn(), item);
}
-TreeItem::~TreeItem() {
- qDeleteAll(childItems);
+bool AbstractTreeItem::removeChild(int column, int row) {
+ if(!_childItems.contains(column) || row >= childCount(column))
+ return false;
+
+ emit beginRemoveChilds(column, row, row);
+ AbstractTreeItem *treeitem = _childItems[column].takeAt(row);
+ treeitem->deleteLater();
+ emit endRemoveChilds();
+
+ return true;
}
-void TreeItem::appendChild(TreeItem *item) {
- childItems.append(item);
+bool AbstractTreeItem::removeChild(int row) {
+ return removeChild(defaultColumn(), row);
}
-void TreeItem::removeChild(int row) {
- childItems.removeAt(row);
+bool AbstractTreeItem::removeChildById(int column, const quint64 &id) {
+ if(!_childItems.contains(column))
+ return false;
+
+ for(int i = 0; i < _childItems[column].count(); i++) {
+ if(_childItems[column][i]->id() == id)
+ return removeChild(column, i);
+ }
+ return false;
}
-TreeItem *TreeItem::child(int row) {
- return childItems.value(row);
+bool AbstractTreeItem::removeChildById(const quint64 &id) {
+ return removeChildById(defaultColumn(), id);
}
-int TreeItem::childCount() const {
- return childItems.count();
+void AbstractTreeItem::removeAllChilds() {
+ AbstractTreeItem *child;
+
+ QHash<int, QList<AbstractTreeItem *> >::iterator columnIter = _childItems.begin();
+ while(columnIter != _childItems.end()) {
+ if(columnIter->count() > 0) {
+ emit beginRemoveChilds(columnIter.key(), 0, columnIter->count() - 1);
+ QList<AbstractTreeItem *>::iterator childIter = columnIter->begin();
+ while(childIter != columnIter->end()) {
+ child = *childIter;
+ // child->removeAllChilds();
+ childIter = columnIter->erase(childIter);
+ child->deleteLater();
+ }
+ emit endRemoveChilds();
+ }
+ columnIter++;
+ }
}
-int TreeItem::row() const {
- if(parentItem)
- return parentItem->childItems.indexOf(const_cast<TreeItem*>(this));
+AbstractTreeItem *AbstractTreeItem::child(int column, int row) const {
+ if(!_childItems.contains(column) || _childItems[column].size() <= row)
+ return 0;
else
+ return _childItems[column].value(row);
+}
+
+AbstractTreeItem *AbstractTreeItem::child(int row) const {
+ return child(defaultColumn(), row);
+}
+
+AbstractTreeItem *AbstractTreeItem::childById(int column, const quint64 &id) const {
+ if(!_childItems.contains(column))
return 0;
+
+ for(int i = 0; i < _childItems[column].count(); i++) {
+ if(_childItems[column][i]->id() == id)
+ return _childItems[column][i];
+ }
+ return 0;
}
-TreeItem *TreeItem::parent() {
- return parentItem;
+AbstractTreeItem *AbstractTreeItem::childById(const quint64 &id) const {
+ return childById(defaultColumn(), id);
}
-int TreeItem::columnCount() const {
- return itemData.count();
+int AbstractTreeItem::childCount(int column) const {
+ if(!_childItems.contains(column))
+ return 0;
+ else
+ return _childItems[column].count();
+}
+
+int AbstractTreeItem::childCount() const {
+ return childCount(defaultColumn());
}
-QVariant TreeItem::data(int column, int role) const {
- if(role == Qt::DisplayRole and column < itemData.count())
- return itemData[column];
+int AbstractTreeItem::column() const {
+ if(!parent())
+ return -1;
+
+ QHash<int, QList<AbstractTreeItem*> >::const_iterator iter = parent()->_childItems.constBegin();
+ while(iter != parent()->_childItems.constEnd()) {
+ if(iter->contains(const_cast<AbstractTreeItem *>(this)))
+ return iter.key();
+ iter++;
+ }
+
+ qWarning() << "AbstractTreeItem::column(): unable to determine the Column of" << this;
+ return parent()->defaultColumn();
+}
+
+int AbstractTreeItem::row() const {
+ if(!parent())
+ return -1;
else
+ return parent()->_childItems[column()].indexOf(const_cast<AbstractTreeItem *>(this));
+}
+
+AbstractTreeItem *AbstractTreeItem::parent() const {
+ return qobject_cast<AbstractTreeItem *>(QObject::parent());
+}
+
+Qt::ItemFlags AbstractTreeItem::flags() const {
+ return _flags;
+}
+
+void AbstractTreeItem::setFlags(Qt::ItemFlags flags) {
+ _flags = flags;
+}
+
+/*****************************************
+ * 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];
}
+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;
+}
+
+int SimpleTreeItem::columnCount() const {
+ return _itemData.count();
+}
+
+/*****************************************
+ * PropertyMapItem
+ *****************************************/
+PropertyMapItem::PropertyMapItem(const QStringList &propertyOrder, AbstractTreeItem *parent)
+ : AbstractTreeItem(parent),
+ _propertyOrder(propertyOrder)
+{
+}
+
+PropertyMapItem::PropertyMapItem(AbstractTreeItem *parent)
+ : AbstractTreeItem(parent),
+ _propertyOrder(QStringList())
+{
+}
+
+
+PropertyMapItem::~PropertyMapItem() {
+}
+
+QVariant PropertyMapItem::data(int column, int role) const {
+ if(column >= columnCount() || role != Qt::DisplayRole)
+ return QVariant();
+
+ return property(_propertyOrder[column].toAscii());
+}
+
+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) {
- rootItem = new TreeItem(data, 0);
+TreeModel::TreeModel(const QList<QVariant> &data, QObject *parent)
+ : QAbstractItemModel(parent),
+ _childStatus(QModelIndex(), 0, 0, 0),
+ _aboutToRemoveOrInsert(false)
+{
+ rootItem = new SimpleTreeItem(data, 0);
+ connectItem(rootItem);
}
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(parent.column(), row);
+
if(childItem)
return createIndex(row, column, childItem);
else
return QModelIndex();
}
+QModelIndex TreeModel::indexById(quint64 id, const QModelIndex &parent) const {
+ AbstractTreeItem *parentItem;
+
+ if(!parent.isValid())
+ parentItem = rootItem;
+ else
+ parentItem = static_cast<AbstractTreeItem *>(parent.internalPointer());
+
+ AbstractTreeItem *childItem = parentItem->childById(parent.column(), id);
+
+ if(childItem)
+ return createIndex(childItem->row(), 0, childItem);
+ else
+ return QModelIndex();
+}
+
+QModelIndex TreeModel::indexByItem(AbstractTreeItem *item, int column) const {
+ if(item == 0) {
+ qWarning() << "TreeModel::indexByItem(AbstractTreeItem *item) received NULL-Pointer";
+ return QModelIndex();
+ }
+
+ if(item == rootItem)
+ return QModelIndex();
+ else
+ return createIndex(item->row(), column, item);
+
+}
+
QModelIndex TreeModel::parent(const QModelIndex &index) const {
if(!index.isValid())
return QModelIndex();
- TreeItem *childItem = static_cast<TreeItem*>(index.internalPointer());
- TreeItem *parentItem = childItem->parent();
+ AbstractTreeItem *childItem = static_cast<AbstractTreeItem *>(index.internalPointer());
+ AbstractTreeItem *parentItem = static_cast<AbstractTreeItem *>(childItem->parent());
if(parentItem == rootItem)
return QModelIndex();
- return createIndex(parentItem->row(), 0, parentItem);
+ return createIndex(parentItem->row(), childItem->column(), parentItem);
}
int TreeModel::rowCount(const QModelIndex &parent) const {
- TreeItem *parentItem;
- if(parent.column() > 0)
- return 0;
-
+ AbstractTreeItem *parentItem;
if(!parent.isValid())
parentItem = rootItem;
else
- parentItem = static_cast<TreeItem*>(parent.internalPointer());
-
- return parentItem->childCount();
+ parentItem = static_cast<AbstractTreeItem*>(parent.internalPointer());
+
+ return parentItem->childCount(parent.column());
}
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 {
+ AbstractTreeItem *item;
if(!index.isValid())
- return 0;
+ item = rootItem;
else
- return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
+ item = static_cast<AbstractTreeItem *>(index.internalPointer());
+ return item->flags();
}
QVariant TreeModel::headerData(int section, Qt::Orientation orientation, int role) const {
return QVariant();
}
-bool TreeModel::removeRow(int row, const QModelIndex &parent) {
- beginRemoveRows(parent, row, row);
- TreeItem *item = static_cast<TreeItem*>(parent.internalPointer());
- item->removeChild(row);
- endRemoveRows();
- return true;
+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);
}
-bool TreeModel::removeRows(int row, int count, const QModelIndex &parent) {
- beginRemoveRows(parent, row, row + count - 1);
- TreeItem *item = static_cast<TreeItem*>(parent.internalPointer());
- for(int i = row; i < row + count; i++) {
- item->removeChild(i);
+void TreeModel::connectItem(AbstractTreeItem *item) {
+ connect(item, SIGNAL(dataChanged(int)),
+ this, SLOT(itemDataChanged(int)));
+
+ connect(item, SIGNAL(beginAppendChilds(int, int, int)),
+ this, SLOT(beginAppendChilds(int, int, int)));
+ connect(item, SIGNAL(endAppendChilds()),
+ this, SLOT(endAppendChilds()));
+
+ connect(item, SIGNAL(beginRemoveChilds(int, int, int)),
+ this, SLOT(beginRemoveChilds(int, int, int)));
+ connect(item, SIGNAL(endRemoveChilds()),
+ this, SLOT(endRemoveChilds()));
+}
+
+void TreeModel::beginAppendChilds(int column, int firstRow, int lastRow) {
+ AbstractTreeItem *parentItem = qobject_cast<AbstractTreeItem *>(sender());
+ if(!parentItem) {
+ qWarning() << "TreeModel::beginAppendChilds(): cannot append Childs to unknown parent";
+ return;
}
+ QModelIndex parent = indexByItem(parentItem, column);
+ 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, cs.parent.column());
+ 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(parent.column(), i));
+ }
+ endInsertRows();
+}
+
+void TreeModel::beginRemoveChilds(int column, 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, column);
+ Q_ASSERT(firstRow <= lastRow);
+ Q_ASSERT(parentItem->childCount(column) > lastRow);
+ Q_ASSERT(!_aboutToRemoveOrInsert);
+
+ _aboutToRemoveOrInsert = true;
+ _childStatus = ChildStatus(parent, rowCount(parent), firstRow, lastRow);
+ beginRemoveRows(parent, firstRow, lastRow);
+}
+
+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, cs.parent.column());
+ 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(), QModelIndex());
+ rootItem->removeAllChilds();
}
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