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koffice/kexi/widget/tableview/kexitableviewdata.cpp

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/* This file is part of the KDE project
Copyright (C) 2002 Lucijan Busch <lucijan@gmx.at>
Copyright (C) 2003 Daniel Molkentin <molkentin@kde.org>
Copyright (C) 2003-2006 Jaroslaw Staniek <js@iidea.pl>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
Original Author: Till Busch <till@bux.at>
Original Project: buX (www.bux.at)
*/
#include "kexitableviewdata.h"
#include <kexiutils/validator.h>
#include <kexidb/field.h>
#include <kexidb/queryschema.h>
#include <kexidb/roweditbuffer.h>
#include <kexidb/cursor.h>
#include <kexidb/utils.h>
#include <kexi.h>
#include <kdebug.h>
#include <klocale.h>
#include <qapplication.h>
unsigned short KexiTableViewData::charTable[]=
{
#include "chartable.txt"
};
KexiTableViewColumn::KexiTableViewColumn(KexiDB::Field& f, bool owner)
: columnInfo(0)
, visibleLookupColumnInfo(0)
, m_field(&f)
{
isDBAware = false;
m_fieldOwned = owner;
m_captionAliasOrName = m_field->captionOrName();
init();
}
KexiTableViewColumn::KexiTableViewColumn(const QString& name, KexiDB::Field::Type ctype,
uint cconst,
uint options,
uint length, uint precision,
QVariant defaultValue,
const QString& caption, const QString& description, uint width
)
: columnInfo(0)
, visibleLookupColumnInfo(0)
{
m_field = new KexiDB::Field(
name, ctype,
cconst,
options,
length, precision,
defaultValue,
caption, description, width);
isDBAware = false;
m_fieldOwned = true;
m_captionAliasOrName = m_field->captionOrName();
init();
}
KexiTableViewColumn::KexiTableViewColumn(const QString& name, KexiDB::Field::Type ctype,
const QString& caption, const QString& description)
: columnInfo(0)
, visibleLookupColumnInfo(0)
{
m_field = new KexiDB::Field(
name, ctype,
KexiDB::Field::NoConstraints,
KexiDB::Field::NoOptions,
0, 0,
QVariant(),
caption, description);
isDBAware = false;
m_fieldOwned = true;
m_captionAliasOrName = m_field->captionOrName();
init();
}
// db-aware
KexiTableViewColumn::KexiTableViewColumn(
const KexiDB::QuerySchema &query, KexiDB::QueryColumnInfo& aColumnInfo,
KexiDB::QueryColumnInfo* aVisibleLookupColumnInfo)
: columnInfo(&aColumnInfo)
, visibleLookupColumnInfo(aVisibleLookupColumnInfo)
, m_field(aColumnInfo.field)
{
isDBAware = true;
m_fieldOwned = false;
//setup column's caption:
if (!columnInfo->field->caption().isEmpty()) {
m_captionAliasOrName = columnInfo->field->caption();
}
else {
//reuse alias if available:
m_captionAliasOrName = columnInfo->alias;
//last hance: use field name
if (m_captionAliasOrName.isEmpty())
m_captionAliasOrName = columnInfo->field->name();
//todo: compute other auto-name?
}
init();
//setup column's readonly flag: true, if
// - it's not from parent table's field, or
// - if the query itself is coming from read-only connection, or
// - if the query itself is stored (i.e. has connection) and lookup column is defined
const bool columnFromMasterTable = query.masterTable()==columnInfo->field->table();
m_readOnly = !columnFromMasterTable
|| (query.connection() && query.connection()->isReadOnly());
// || (query.connection() && (query.connection()->isReadOnly() || visibleLookupColumnInfo));
//! @todo 2.0: remove this when queries become editable ^^^^^^^^^^^^^^
// kdDebug() << "KexiTableViewColumn: query.masterTable()=="
// << (query.masterTable() ? query.masterTable()->name() : "notable") << ", columnInfo->field->table()=="
// << (columnInfo->field->table() ? columnInfo->field->table()->name() : "notable") << endl;
// m_visible = query.isFieldVisible(&f);
}
KexiTableViewColumn::KexiTableViewColumn(bool)
: columnInfo(0)
, visibleLookupColumnInfo(0)
, m_field(0)
{
isDBAware = false;
init();
}
KexiTableViewColumn::~KexiTableViewColumn()
{
if (m_fieldOwned)
delete m_field;
setValidator( 0 );
delete m_relatedData;
}
void KexiTableViewColumn::init()
{
m_relatedData = 0;
m_readOnly = false;
m_visible = true;
m_data = 0;
m_validator = 0;
m_relatedDataEditable = false;
m_headerTextVisible = true;
}
void KexiTableViewColumn::setValidator( KexiUtils::Validator* v )
{
if (m_validator) {//remove old one
if (!m_validator->parent()) //destroy if has no parent
delete m_validator;
}
m_validator = v;
}
void KexiTableViewColumn::setRelatedData(KexiTableViewData *data)
{
if (isDBAware)
return;
if (m_relatedData)
delete m_relatedData;
m_relatedData = 0;
if (!data)
return;
//find a primary key
KexiTableViewColumn::ListIterator it( data->columns );
for (int id = 0;it.current();++it, id++) {
if (it.current()->field()->isPrimaryKey()) {
//found, remember
m_relatedDataPKeyID = id;
m_relatedData = data;
return;
}
}
}
void KexiTableViewColumn::setRelatedDataEditable(bool set)
{
m_relatedDataEditable = set;
}
bool KexiTableViewColumn::isReadOnly() const
{
return m_readOnly || (m_data && m_data->isReadOnly());
}
bool KexiTableViewColumn::acceptsFirstChar(const QChar& ch) const
{
// the field we're looking at can be related to "visible lookup column"
// if lookup column is present
KexiDB::Field *visibleField = visibleLookupColumnInfo
? visibleLookupColumnInfo->field : m_field;
if (visibleField->isNumericType()) {
if (ch=='.' || ch==',')
return visibleField->isFPNumericType();
if (ch=='-')
return !visibleField->isUnsigned();
if (ch=='+' || (ch>='0' && ch<='9'))
return true;
return false;
}
switch (visibleField->type()) {
case KexiDB::Field::Boolean:
return false;
case KexiDB::Field::Date:
case KexiDB::Field::DateTime:
case KexiDB::Field::Time:
return ch>='0' && ch<='9';
default:;
}
return true;
}
//------------------------------------------------------
KexiTableViewData::KexiTableViewData()
: QObject()
, KexiTableViewDataBase()
{
init();
}
// db-aware ctor
KexiTableViewData::KexiTableViewData(KexiDB::Cursor *c)
: QObject()
, KexiTableViewDataBase()
{
init();
m_cursor = c;
m_containsROWIDInfo = m_cursor->containsROWIDInfo();
if (m_cursor && m_cursor->query()) {
const KexiDB::QuerySchema::FieldsExpandedOptions fieldsExpandedOptions
= m_containsROWIDInfo ? KexiDB::QuerySchema::WithInternalFieldsAndRowID
: KexiDB::QuerySchema::WithInternalFields;
m_itemSize = m_cursor->query()->fieldsExpanded( fieldsExpandedOptions ).count();
}
else
m_itemSize = columns.count()+(m_containsROWIDInfo?1:0);
// Allocate KexiTableViewColumn objects for each visible query column
const KexiDB::QueryColumnInfo::Vector fields = m_cursor->query()->fieldsExpanded();
const uint fieldsCount = fields.count();
for (uint i=0;i < fieldsCount;i++) {
KexiDB::QueryColumnInfo *ci = fields[i];
if (ci->visible) {
KexiDB::QueryColumnInfo *visibleLookupColumnInfo = 0;
if (ci->indexForVisibleLookupValue() != -1) {
//Lookup field is defined
visibleLookupColumnInfo = m_cursor->query()->expandedOrInternalField( ci->indexForVisibleLookupValue() );
/* not needed
if (visibleLookupColumnInfo) {
// 2. Create a KexiTableViewData object for each found lookup field
}*/
}
KexiTableViewColumn* col = new KexiTableViewColumn(*m_cursor->query(), *ci, visibleLookupColumnInfo);
addColumn( col );
}
}
}
KexiTableViewData::KexiTableViewData(
const QValueList<QVariant> &keys, const QValueList<QVariant> &values,
KexiDB::Field::Type keyType, KexiDB::Field::Type valueType)
: QObject()
, KexiTableViewDataBase()
{
init(keys, values, keyType, valueType);
}
KexiTableViewData::KexiTableViewData(
KexiDB::Field::Type keyType, KexiDB::Field::Type valueType)
{
const QValueList<QVariant> empty;
init(empty, empty, keyType, valueType);
}
KexiTableViewData::~KexiTableViewData()
{
emit destroying();
clearInternal();
}
void KexiTableViewData::init(
const QValueList<QVariant> &keys, const QValueList<QVariant> &values,
KexiDB::Field::Type keyType, KexiDB::Field::Type valueType)
{
init();
KexiDB::Field *keyField = new KexiDB::Field("key", keyType);
keyField->setPrimaryKey(true);
KexiTableViewColumn *keyColumn = new KexiTableViewColumn(*keyField, true);
keyColumn->setVisible(false);
addColumn(keyColumn);
KexiDB::Field *valueField = new KexiDB::Field("value", valueType);
KexiTableViewColumn *valueColumn = new KexiTableViewColumn(*valueField, true);
addColumn(valueColumn);
uint cnt = QMIN(keys.count(), values.count());
QValueList<QVariant>::ConstIterator it_keys = keys.constBegin();
QValueList<QVariant>::ConstIterator it_values = values.constBegin();
for (;cnt>0;++it_keys, ++it_values, cnt--) {
KexiTableItem *item = new KexiTableItem(2);
(*item)[0] = (*it_keys);
(*item)[1] = (*it_values);
append( item );
}
}
void KexiTableViewData::init()
{
m_sortedColumn = 0;
m_realSortedColumn = 0;
// m_order = 1;
m_order = 0;
m_type = 1;
m_pRowEditBuffer = 0;
m_cursor = 0;
m_readOnly = false;
m_insertingEnabled = true;
setAutoDelete(true);
columns.setAutoDelete(true);
m_visibleColumnsCount=0;
m_visibleColumnsIDs.resize(100);
m_globalColumnsIDs.resize(100);
m_autoIncrementedColumn = -2;
m_containsROWIDInfo = false;
m_itemSize = 0;
}
void KexiTableViewData::deleteLater()
{
m_cursor = 0;
QObject::deleteLater();
}
void KexiTableViewData::addColumn( KexiTableViewColumn* col )
{
// if (!col->isDBAware) {
// if (!m_simpleColumnsByName)
// m_simpleColumnsByName = new QDict<KexiTableViewColumn>(101);
// m_simpleColumnsByName->insert(col->caption,col);//for faster lookup
// }
columns.append( col );
col->m_data = this;
if (m_globalColumnsIDs.size() < columns.count()) {//sanity
m_globalColumnsIDs.resize( m_globalColumnsIDs.size()*2 );
}
if (col->visible()) {
m_visibleColumnsCount++;
if (m_visibleColumnsIDs.size() < m_visibleColumnsCount) {//sanity
m_visibleColumnsIDs.resize( m_visibleColumnsIDs.size()*2 );
}
m_visibleColumnsIDs[ columns.count()-1 ] = m_visibleColumnsCount-1;
m_globalColumnsIDs[ m_visibleColumnsCount-1 ] = columns.count()-1;
}
else {
m_visibleColumnsIDs[ columns.count()-1 ] = -1;
}
m_autoIncrementedColumn = -2; //clear cache;
if (!m_cursor || !m_cursor->query())
m_itemSize = columns.count()+(m_containsROWIDInfo?1:0);
}
QString KexiTableViewData::dbTableName() const
{
if (m_cursor && m_cursor->query() && m_cursor->query()->masterTable())
return m_cursor->query()->masterTable()->name();
return QString::null;
}
void KexiTableViewData::setSorting(int column, bool ascending)
{
if (column>=0 && column<(int)columns.count()) {
m_order = (ascending ? 1 : -1);
}
else {
m_order = 0;
m_sortedColumn = -1;
m_realSortedColumn = -1;
return;
}
// find proper column information for sorting (lookup column points to alternate column with visible data)
const KexiTableViewColumn *tvcol = columns.at(column);
KexiDB::QueryColumnInfo* visibleLookupColumnInfo = tvcol->visibleLookupColumnInfo;
const KexiDB::Field *field = visibleLookupColumnInfo ? visibleLookupColumnInfo->field : tvcol->field();
m_sortedColumn = column;
m_realSortedColumn = tvcol->columnInfo->indexForVisibleLookupValue()!=-1
? tvcol->columnInfo->indexForVisibleLookupValue() : m_sortedColumn;
// setup compare function
const int t = field->type();
if (field->isTextType())
cmpFunc = &KexiTableViewData::cmpStr;
else if (KexiDB::Field::isFPNumericType(t))
cmpFunc = &KexiTableViewData::cmpDouble;
else if (t==KexiDB::Field::BigInteger) {
if (field->isUnsigned())
cmpFunc = &KexiTableViewData::cmpULongLong;
else
cmpFunc = &KexiTableViewData::cmpLongLong;
}
else if (t == KexiDB::Field::Integer && field->isUnsigned())
cmpFunc = &KexiTableViewData::cmpUInt;
else if (t == KexiDB::Field::Boolean || KexiDB::Field::isNumericType(t))
cmpFunc = &KexiTableViewData::cmpInt; //other integers
else if (t == KexiDB::Field::Date)
cmpFunc = &KexiTableViewData::cmpDate;
else if (t == KexiDB::Field::Time)
cmpFunc = &KexiTableViewData::cmpTime;
else if (t == KexiDB::Field::DateTime)
cmpFunc = &KexiTableViewData::cmpDateTime;
else if (t == KexiDB::Field::BLOB)
//! TODO allow users to define BLOB sorting function?
cmpFunc = &KexiTableViewData::cmpBLOB;
else
cmpFunc = &KexiTableViewData::cmpStr; //anything else
}
int KexiTableViewData::compareItems(Item item1, Item item2)
{
return ((this->*cmpFunc) (item1, item2));
}
//! compare NULLs : NULL is smaller than everything
#define CMP_NULLS(item1, item2) \
m_leftTmp = ((KexiTableItem *)item1)->at(m_realSortedColumn); \
if (m_leftTmp.isNull()) \
return -m_order; \
m_rightTmp = ((KexiTableItem *)item2)->at(m_realSortedColumn); \
if (m_rightTmp.isNull()) \
return m_order
#define CAST_AND_COMPARE(casting, item1, item2) \
CMP_NULLS(item1, item2); \
if (m_leftTmp.casting() < m_rightTmp.casting()) \
return -m_order; \
if (m_leftTmp.casting() > m_rightTmp.casting()) \
return m_order; \
return 0
int KexiTableViewData::cmpInt(Item item1, Item item2)
{
CAST_AND_COMPARE(toInt, item1, item2);
}
int KexiTableViewData::cmpUInt(Item item1, Item item2)
{
CAST_AND_COMPARE(toUInt, item1, item2);
}
int KexiTableViewData::cmpLongLong(Item item1, Item item2)
{
CAST_AND_COMPARE(toLongLong, item1, item2);
}
int KexiTableViewData::cmpULongLong(Item item1, Item item2)
{
CAST_AND_COMPARE(toULongLong, item1, item2);
}
int KexiTableViewData::cmpDouble(Item item1, Item item2)
{
CAST_AND_COMPARE(toDouble, item1, item2);
}
int KexiTableViewData::cmpDate(Item item1, Item item2)
{
CAST_AND_COMPARE(toDate, item1, item2);
}
int KexiTableViewData::cmpDateTime(Item item1, Item item2)
{
CAST_AND_COMPARE(toDateTime, item1, item2);
}
int KexiTableViewData::cmpTime(Item item1, Item item2)
{
CAST_AND_COMPARE(toDate, item1, item2);
}
int KexiTableViewData::cmpStr(Item item1, Item item2)
{
CMP_NULLS(item1, item2);
const QString &as = m_leftTmp.toString();
const QString &bs = m_rightTmp.toString();
const QChar *a = as.unicode();
const QChar *b = bs.unicode();
if ( a == b )
return 0;
if ( a == 0 )
return -1;
if ( b == 0 )
return 1;
unsigned short au;
unsigned short bu;
int l=QMIN(as.length(),bs.length());
au = a->unicode();
bu = b->unicode();
au = (au <= 0x17e ? charTable[au] : 0xffff);
bu = (bu <= 0x17e ? charTable[bu] : 0xffff);
while (l-- && au == bu)
{
a++,b++;
au = a->unicode();
bu = b->unicode();
au = (au <= 0x17e ? charTable[au] : 0xffff);
bu = (bu <= 0x17e ? charTable[bu] : 0xffff);
}
if ( l==-1 )
return m_order*(as.length()-bs.length());
return m_order*(au-bu);
}
int KexiTableViewData::cmpBLOB(Item item1, Item item2)
{
CMP_NULLS(item1, item2);
return m_leftTmp.toByteArray().size() - m_rightTmp.toByteArray().size();
}
void KexiTableViewData::setReadOnly(bool set)
{
if (m_readOnly == set)
return;
m_readOnly = set;
if (m_readOnly)
setInsertingEnabled(false);
}
void KexiTableViewData::setInsertingEnabled(bool set)
{
if (m_insertingEnabled == set)
return;
m_insertingEnabled = set;
if (m_insertingEnabled)
setReadOnly(false);
}
void KexiTableViewData::clearRowEditBuffer()
{
//init row edit buffer
if (!m_pRowEditBuffer)
m_pRowEditBuffer = new KexiDB::RowEditBuffer(isDBAware());
else
m_pRowEditBuffer->clear();
}
bool KexiTableViewData::updateRowEditBufferRef(KexiTableItem *item,
int colnum, KexiTableViewColumn* col, QVariant& newval, bool allowSignals,
QVariant *visibleValueForLookupField)
{
m_result.clear();
if (allowSignals)
emit aboutToChangeCell(item, colnum, newval, &m_result);
if (!m_result.success)
return false;
kdDebug() << "KexiTableViewData::updateRowEditBufferRef() column #"
<< colnum << " = " << newval.toString() << endl;
if (!col) {
kdWarning() << "KexiTableViewData::updateRowEditBufferRef(): column #"
<< colnum << " not found! col==0" << endl;
return false;
}
if (!m_pRowEditBuffer)
m_pRowEditBuffer = new KexiDB::RowEditBuffer(isDBAware());
if (m_pRowEditBuffer->isDBAware()) {
if (!(col->columnInfo)) {
kdWarning() << "KexiTableViewData::updateRowEditBufferRef(): column #"
<< colnum << " not found!" << endl;
return false;
}
m_pRowEditBuffer->insert( *col->columnInfo, newval);
if (col->visibleLookupColumnInfo && visibleValueForLookupField) {
//this is value for lookup table: update visible value as well
m_pRowEditBuffer->insert( *col->visibleLookupColumnInfo, *visibleValueForLookupField);
}
return true;
}
if (!(col->field())) {
kdDebug() << "KexiTableViewData::updateRowEditBufferRef(): column #" << colnum<<" not found!" << endl;
return false;
}
//not db-aware:
const QString colname = col->field()->name();
if (colname.isEmpty()) {
kdDebug() << "KexiTableViewData::updateRowEditBufferRef(): column #" << colnum<<" not found!" << endl;
return false;
}
m_pRowEditBuffer->insert(colname, newval);
return true;
}
//get a new value (if present in the buffer), or the old one, otherwise
//(taken here for optimization)
#define GET_VALUE if (!val) { \
val = m_cursor \
? m_pRowEditBuffer->at( *it_f.current()->columnInfo, true /* useDefaultValueIfPossible */ ) \
: m_pRowEditBuffer->at( *f ); \
if (!val) \
val = &(*it_r); /* get old value */ \
}
//! @todo if there're multiple views for this data, we need multiple buffers!
bool KexiTableViewData::saveRow(KexiTableItem& item, bool insert, bool repaint)
{
if (!m_pRowEditBuffer)
return true; //nothing to do
//check constraints:
//-check if every NOT NULL and NOT EMPTY field is filled
KexiTableViewColumn::ListIterator it_f(columns);
KexiDB::RowData::ConstIterator it_r = item.constBegin();
int col = 0;
const QVariant *val;
for (;it_f.current() && it_r!=item.constEnd();++it_f,++it_r,col++) {
KexiDB::Field *f = it_f.current()->field();
val = 0;
if (f->isNotNull()) {
GET_VALUE;
//check it
if (val->isNull() && !f->isAutoIncrement()) {
//NOT NULL violated
m_result.msg = i18n("\"%1\" column requires a value to be entered.")
.arg(f->captionOrName()) + "\n\n" + Kexi::msgYouCanImproveData();
m_result.desc = i18n("The column's constraint is declared as NOT NULL.");
m_result.column = col;
return false;
}
}
if (f->isNotEmpty()) {
GET_VALUE;
if (!f->isAutoIncrement() && (val->isNull() || KexiDB::isEmptyValue( f, *val ))) {
//NOT EMPTY violated
m_result.msg = i18n("\"%1\" column requires a value to be entered.")
.arg(f->captionOrName()) + "\n\n" + Kexi::msgYouCanImproveData();
m_result.desc = i18n("The column's constraint is declared as NOT EMPTY.");
m_result.column = col;
return false;
}
}
}
if (m_cursor) {//db-aware
if (insert) {
if (!m_cursor->insertRow( static_cast<KexiDB::RowData&>(item), *m_pRowEditBuffer,
m_containsROWIDInfo/*also retrieve ROWID*/ ))
{
m_result.msg = i18n("Row inserting failed.") + "\n\n"
+ Kexi::msgYouCanImproveData();
KexiDB::getHTMLErrorMesage(m_cursor, &m_result);
/* if (desc)
*desc =
js: TODO: use KexiMainWindowImpl::showErrorMessage(const QString &title, KexiDB::Object *obj)
after it will be moved somewhere to kexidb (this will require moving other
showErrorMessage() methods from KexiMainWindowImpl to libkexiutils....)
then: just call: *desc = KexiDB::errorMessage(m_cursor);
*/
return false;
}
}
else { // row updating
// if (m_containsROWIDInfo)
// ROWID = item[columns.count()].toULongLong();
if (!m_cursor->updateRow( static_cast<KexiDB::RowData&>(item), *m_pRowEditBuffer,
m_containsROWIDInfo/*use ROWID*/))
{
m_result.msg = i18n("Row changing failed.") + "\n\n" + Kexi::msgYouCanImproveData();
//! @todo set m_result.column if possible
KexiDB::getHTMLErrorMesage(m_cursor, m_result.desc);
return false;
}
}
}
else {//not db-aware version
KexiDB::RowEditBuffer::SimpleMap b = m_pRowEditBuffer->simpleBuffer();
for (KexiDB::RowEditBuffer::SimpleMap::ConstIterator it = b.constBegin();it!=b.constEnd();++it) {
uint i=0;
for (KexiTableViewColumn::ListIterator it2(columns);it2.current();++it2, i++) {
if (it2.current()->field()->name()==it.key()) {
kdDebug() << it2.current()->field()->name()<< ": "<<item[i].toString()<<" -> "<<it.data().toString()<<endl;
item[i] = it.data();
}
}
}
}
m_pRowEditBuffer->clear();
if (repaint)
emit rowRepaintRequested(item);
return true;
}
bool KexiTableViewData::saveRowChanges(KexiTableItem& item, bool repaint)
{
kdDebug() << "KexiTableViewData::saveRowChanges()..." << endl;
m_result.clear();
emit aboutToUpdateRow(&item, m_pRowEditBuffer, &m_result);
if (!m_result.success)
return false;
if (saveRow(item, false /*update*/, repaint)) {
emit rowUpdated(&item);
return true;
}
return false;
}
bool KexiTableViewData::saveNewRow(KexiTableItem& item, bool repaint)
{
kdDebug() << "KexiTableViewData::saveNewRow()..." << endl;
m_result.clear();
emit aboutToInsertRow(&item, &m_result, repaint);
if (!m_result.success)
return false;
if (saveRow(item, true /*insert*/, repaint)) {
emit rowInserted(&item, repaint);
return true;
}
return false;
}
bool KexiTableViewData::deleteRow(KexiTableItem& item, bool repaint)
{
m_result.clear();
emit aboutToDeleteRow(item, &m_result, repaint);
if (!m_result.success)
return false;
if (m_cursor) {//db-aware
m_result.success = false;
if (!m_cursor->deleteRow( static_cast<KexiDB::RowData&>(item), m_containsROWIDInfo/*use ROWID*/ )) {
m_result.msg = i18n("Row deleting failed.");
/*js: TODO: use KexiDB::errorMessage() for description (desc) as in KexiTableViewData::saveRow() */
KexiDB::getHTMLErrorMesage(m_cursor, &m_result);
m_result.success = false;
return false;
}
}
if (!removeRef(&item)) {
//aah - this shouldn't be!
kdWarning() << "KexiTableViewData::deleteRow(): !removeRef() - IMPL. ERROR?" << endl;
m_result.success = false;
return false;
}
emit rowDeleted();
return true;
}
void KexiTableViewData::deleteRows( const QValueList<int> &rowsToDelete, bool repaint )
{
Q_UNUSED( repaint );
if (rowsToDelete.isEmpty())
return;
int last_r=0;
first();
for (QValueList<int>::ConstIterator r_it = rowsToDelete.constBegin(); r_it!=rowsToDelete.constEnd(); ++r_it) {
for (; last_r<(*r_it); last_r++) {
next();
}
remove();
last_r++;
}
//DON'T CLEAR BECAUSE KexiTableViewPropertyBuffer will clear BUFFERS!
//--> emit reloadRequested(); //! \todo more effective?
emit rowsDeleted( rowsToDelete );
}
void KexiTableViewData::insertRow(KexiTableItem& item, uint index, bool repaint)
{
if (!insert( index = QMIN(index, count()), &item ))
return;
emit rowInserted(&item, index, repaint);
}
void KexiTableViewData::clearInternal()
{
clearRowEditBuffer();
// qApp->processEvents( 1 );
//TODO: this is time consuming: find better data model
// KexiTableViewDataBase::clear();
const uint c = count();
for (uint i=0; i<c; i++) {
removeLast();
#ifndef KEXI_NO_PROCESS_EVENTS
if (i % 1000 == 0)
qApp->processEvents( 1 );
#endif
}
}
bool KexiTableViewData::deleteAllRows(bool repaint)
{
clearInternal();
bool res = true;
if (m_cursor) {
//db-aware
res = m_cursor->deleteAllRows();
}
if (repaint)
emit reloadRequested();
return res;
}
int KexiTableViewData::autoIncrementedColumn()
{
if (m_autoIncrementedColumn==-2) {
//find such a column
m_autoIncrementedColumn = 0;
KexiTableViewColumn::ListIterator it(columns);
for (; it.current(); ++it, m_autoIncrementedColumn++) {
if (it.current()->field()->isAutoIncrement())
break;
}
if (!it.current())
m_autoIncrementedColumn = -1;
}
return m_autoIncrementedColumn;
}
void KexiTableViewData::preloadAllRows()
{
if (!m_cursor)
return;
//const uint fcount = m_cursor->fieldCount() + (m_containsROWIDInfo ? 1 : 0);
m_cursor->moveFirst();
for (int i=0;!m_cursor->eof();i++) {
KexiTableItem *item = new KexiTableItem(0);
m_cursor->storeCurrentRow(*item);
// item->debug();
append( item );
m_cursor->moveNext();
#ifndef KEXI_NO_PROCESS_EVENTS
if ((i % 1000) == 0)
qApp->processEvents( 1 );
#endif
}
}
bool KexiTableViewData::isReadOnly() const
{
return m_readOnly || (m_cursor && m_cursor->connection()->isReadOnly());
}
#include "kexitableviewdata.moc"
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