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#include "modelforpointers.h"
ModelForPointers::ModelForPointers(QObject *parent) :
QSqlTableModel(parent)
{
setEditStrategy(QSqlTableModel::OnManualSubmit);
}
Qt::ItemFlags ModelForPointers::flags(
const QModelIndex &index) const {
Qt::ItemFlags flags = QSqlTableModel::flags(index);
if ((index.column() != 3) && (index.column() != 0))
flags |= Qt::ItemIsEditable;
//if (index.column() == 4)
// flags |= Qt::ItemIsUserCheckable;
else
{
if ((index.column() == 3) || (index.column() == 0)) flags &= ~Qt::ItemIsEditable; // çàïðåùàåì ðåäàêòèðîâàíèå òðåòüåãî ñòîëáöà
}
return flags;
}
bool ModelForPointers::setData(const QModelIndex &index, const QVariant &value, int role) {
//// if (index.column()==3) return false; // â òðåòüåé êîëîíêå íå äàåì ïîìåíÿòü çíà÷åíèå
bool lResult = false;
QVariant old_value; // ñîõðàíèì ñòàðîå çíà÷åíèå
old_value = data(index);
if (index.column()==1){ // åñëè ïîìåíÿëîñü èìÿ ïîëÿ
QSqlQuery qu;
QString old_field_name; // ñòàðîå èìÿ ïîëÿ
QString new_field_name; // íîâîå èìÿ ïîëÿ
QString query_str;
QString type_str; // òèï äàííûõ ïîëÿ
old_field_name = old_value.toString(); // îïðåäåëèì òåêóùåå (êîòîðîå íóæíî ïîìåíÿòü) èìÿ ïîëÿ
new_field_name = value.toString();
// type_str = data(ModelForPointers::index(index.row(), 3)).toString(); // òèï ïîëÿ õðàíèòüñÿ â 3 ñòîëáöå, ñ÷èòûâàåì åãî çíà÷åíèå
type_str = tr("CHAR(10)");
query_str = tr("ALTER TABLE ");
query_str.append(ModelForPointers::Inctance);
query_str.append(tr(" CHANGE COLUMN `"));
query_str.append(old_field_name);
query_str.append(tr("` `"));
query_str.append(new_field_name);
query_str.append(tr("` "));
query_str.append(type_str);
query_str.append(tr(" CHARACTER SET cp1251 COLLATE cp1251_general_ci DEFAULT NULL"));
qu.prepare(query_str);
bool ok;
ok = qu.exec();
if (!ok) return false;
}
lResult = QSqlTableModel::setData(index, value, role);
if (lResult) {
QModelIndex newindex;
QSqlRecord rec = record(index.row());
rec.setValue(index.column(), value);
rec.setGenerated(index.column(), true);
lResult = updateRowInTable(index.row(), rec);
emit field_changed();
/// QSqlTableModel::setData(newindex, QVariant(str_tmp), Qt::EditRole);
}
return lResult;
}
QVariant ModelForPointers::data(const QModelIndex &index, int role) const {
QVariant value = QSqlTableModel::data(index, role);
switch (role) {
case Qt::DisplayRole: {
if(index.column() == 4){
QSqlQuery q;
QString sql_str;
bool ok;
sql_str = tr("select * from `ListOfClasses` where `ID` = ");
sql_str.append(value.toString());
q.prepare(sql_str);
ok = q.exec();
if (ok) {
while(q.next()){
QString class_name = q.value(1).toString();
if (!class_name.isEmpty()) return class_name;
}
}
}
return value;
}
case Qt::EditRole: return value;
case Qt::TextColorRole:
if(index.column() == 1)
return qVariantFromValue(QColor(Qt::blue));
else
return value;
case Qt::TextAlignmentRole: return value;
case Qt::FontRole:
if(index.column() == 1) {
QFont font = QFont("Helvetica", 16, QFont::Bold);
return qVariantFromValue(font);
}else
return value;
case Qt::BackgroundColorRole: {
int a = (index.row() % 2) ? 14 : 0;
if(index.column() == 2)
return qVariantFromValue(QColor(220,240-a,230-a));
else if(index.column() == 4)
return qVariantFromValue(QColor(200,220-a,255-a));
else
return value;
}
case Qt::CheckStateRole: return value;
case Qt::SizeHintRole:return value;
}
return value;
}
void ModelForPointers::setInctance(QString currInctatce){ // ïåðåäàåì èìÿ òåêóùåé òàáëèöû-õðàíèëèùà
ModelForPointers::Inctance = currInctatce;
}
bool ModelForPointers::onlySetData(const QModelIndex &index, const QVariant &value, int role){
bool lResult = false;
QSqlRecord rec = record(index.row());
rec.setValue(index.column(), value);
rec.setGenerated(index.column(), true);
lResult = QSqlTableModel::setData(index, value, role);
if (lResult) {
lResult = updateRowInTable(index.row(), rec);
// emit field_changed();
/// QSqlTableModel::setData(newindex, QVariant(str_tmp), Qt::EditRole);
}
return lResult;
}