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LimeReport/limereport/scripteditor/lrcompletermodel.cpp

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#include "lrcompletermodel.h"
#include <QDebug>
CompleterModel::CompleterModel(QObject* parent): QAbstractItemModel(parent)
{
m_root.setModel(this);
}
QModelIndex CompleterModel::index(int row, int column, const QModelIndex& parent) const
{
CompleterItem const* parentItem;
if (!parent.isValid())
parentItem = &m_root;
else
parentItem = static_cast<CompleterItem*>(parent.internalPointer());
if ((parentItem == nullptr) || (row < 0) || (column < 0) || (row >= parentItem->rowCount())
|| (column >= 1)) {
return QModelIndex();
}
return createIndex(row, column, parentItem->child(row));
}
QModelIndex CompleterModel::parent(const QModelIndex& child) const
{
if (child.isValid()) {
if (CompleterItem* childItem = static_cast<CompleterItem*>(child.internalPointer());
childItem) {
CompleterItem* parentItem = childItem->parent();
if (parentItem != &m_root) {
return indexFromItem(parentItem);
}
}
}
return QModelIndex();
}
int CompleterModel::rowCount(const QModelIndex& parent) const
{
if (parent.isValid()) {
CompleterItem* parentItem = static_cast<CompleterItem*>(parent.internalPointer());
return parentItem->rowCount();
}
return m_root.rowCount();
}
int CompleterModel::columnCount(const QModelIndex& parent) const
{
Q_UNUSED(parent)
return 1;
}
QVariant CompleterModel::data(const QModelIndex& index, int role) const
{
if (index.isValid()) {
CompleterItem* item = static_cast<CompleterItem*>(index.internalPointer());
switch (role) {
case Qt::DisplayRole:
case Qt::EditRole:
if (!item)
return QVariant();
if (index.column() == 0) {
return item->text();
} else {
return "";
}
case Qt::DecorationRole:
if (!item)
return QIcon();
if (index.column() == 0) {
return item->icon();
} else
return QIcon();
default:
return QVariant();
}
}
return QVariant();
}
QList<CompleterItem*> CompleterModel::findItems(const QString& text, Qt::MatchFlags flags,
int column) const
{
QModelIndexList indexes
= match(index(0, column, QModelIndex()), Qt::DisplayRole, text, -1, flags);
QList<CompleterItem*> items;
const int numIndexes = indexes.size();
items.reserve(numIndexes);
for (int i = 0; i < numIndexes; ++i)
items.append(itemFromIndex(indexes.at(i)));
return items;
}
void CompleterModel::clear()
{
beginResetModel();
m_root.clear();
endResetModel();
}
CompleterItem* CompleterModel::itemFromIndex(const QModelIndex index) const
{
if ((index.row() < 0) || (index.column() < 0) || (index.model() != this))
return nullptr;
CompleterItem* parent = static_cast<CompleterItem*>(index.internalPointer());
if (parent == nullptr)
return nullptr;
CompleterItem* item = parent->child(index.row());
return item;
}
QModelIndex CompleterModel::indexFromItem(CompleterItem* item) const
{
if (item && item->parent()) {
return createIndex(item->row(), 0, item);
}
return QModelIndex();
}
CompleterItem::~CompleterItem() { }
void CompleterItem::setIcon(const QIcon& newIcon) { m_icon = newIcon; }
void CompleterItem::setText(const QString& newText) { m_text = newText; }
void CompleterItem::appendRow(CompleterItem* child)
{
child->m_parent = this;
child->m_model = this->m_model;
m_children.append(QSharedPointer<CompleterItem>(child));
if (m_model) {
QModelIndex start = m_model->indexFromItem(child);
emit m_model->dataChanged(start, start);
}
}
void CompleterItem::appendRows(const QList<CompleterItem*>& children)
{
foreach (CompleterItem* item, children) {
appendRow(item);
}
}