treeitem.cpp Example File

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/*
    treeitem.cpp
    A container for items of data supplied by the simple tree model.
*/
#include "treeitem.h"
#include <QStringList>
TreeItem::TreeItem(const QVector<QVariant> &data, TreeItem *parent)
{
    parentItem = parent;
    itemData = data;
}
TreeItem::~TreeItem()
{
    qDeleteAll(childItems);
}
TreeItem *TreeItem::child(int number)
{
    return childItems.value(number);
}
int TreeItem::childCount() const
{
    return childItems.count();
}
int TreeItem::childNumber() const
{
    if (parentItem)
        return parentItem->childItems.indexOf(const_cast<TreeItem*>(this));
    return 0;
}
int TreeItem::columnCount() const
{
    return itemData.count();
}
QVariant TreeItem::data(int column) const
{
    return itemData.value(column);
}
bool TreeItem::insertChildren(int position, int count, int columns)
{
    if (position < 0 || position > childItems.size())
        return false;
    for (int row = 0; row < count; ++row) {
        QVector<QVariant> data(columns);
        TreeItem *item = new TreeItem(data, this);
        childItems.insert(position, item);
    }
    return true;
}
bool TreeItem::insertColumns(int position, int columns)
{
    if (position < 0 || position > itemData.size())
        return false;
    for (int column = 0; column < columns; ++column)
        itemData.insert(position, QVariant());
    foreach (TreeItem *child, childItems)
        child->insertColumns(position, columns);
    return true;
}
TreeItem *TreeItem::parent()
{
    return parentItem;
}
bool TreeItem::removeChildren(int position, int count)
{
    if (position < 0 || position + count > childItems.size())
        return false;
    for (int row = 0; row < count; ++row)
        delete childItems.takeAt(position);
    return true;
}
bool TreeItem::removeColumns(int position, int columns)
{
    if (position < 0 || position + columns > itemData.size())
        return false;
    for (int column = 0; column < columns; ++column)
        itemData.remove(position);
    foreach (TreeItem *child, childItems)
        child->removeColumns(position, columns);
    return true;
}
bool TreeItem::setData(int column, const QVariant &value)
{
    if (column < 0 || column >= itemData.size())
        return false;
    itemData[column] = value;
    return true;
}