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316 lines
13 KiB
316 lines
13 KiB
/* This file is part of the KDE project
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Copyright (C) 2005-2006 Jaroslaw Staniek <js@iidea.pl>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "kexidataprovider.h"
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#include <tqwidget.h>
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#include <tqobjectlist.h>
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#include <kdebug.h>
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#include <tdelocale.h>
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#include <widget/tableview/kexitableitem.h>
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#include <widget/tableview/kexitableviewdata.h>
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#include <widget/tableview/kexicomboboxbase.h>
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#include <kexidb/queryschema.h>
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#include <kexiutils/utils.h>
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#include "widgets/kexidbform.h"
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KexiFormDataProvider::KexiFormDataProvider()
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: KexiDataItemChangesListener()
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, m_mainWidget(0)
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, m_duplicatedItems(0)
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, m_disableFillDuplicatedDataItems(false)
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{
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}
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KexiFormDataProvider::~KexiFormDataProvider()
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{
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delete m_duplicatedItems;
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}
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void KexiFormDataProvider::setMainDataSourceWidget(TQWidget* mainWidget)
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{
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m_mainWidget = mainWidget;
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m_dataItems.clear();
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m_usedDataSources.clear();
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m_fieldNumbersForDataItems.clear();
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if (!m_mainWidget)
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return;
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//find widgets whose will work as data items
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TQObjectList *l = m_mainWidget->queryList( "TQWidget" );
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TQObjectListIt it( *l );
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TQObject *obj;
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TQDict<char> tmpSources;
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for ( ; (obj = it.current()) != 0; ++it ) {
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KexiFormDataItemInterface* const formDataItem = dynamic_cast<KexiFormDataItemInterface*>(obj);
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if (!formDataItem)
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continue;
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if (formDataItem->parentInterface()) //item with parent interface: collect parent instead...
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continue;
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#if 0 //! @todo reenable when subform is moved to KexiDBForm
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KexiDBForm *dbForm = KexiUtils::findParent<KexiDBForm>(obj, "KexiDBForm"); //form's surface...
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if (dbForm!=m_mainWidget) //only set data for this form's data items
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continue;
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#else
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//tmp: reject widgets within subforms
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if (KexiUtils::findParent<KexiDBForm>(obj, "KexiDBSubForm"))
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continue;
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#endif
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TQString dataSource( formDataItem->dataSource().lower() );
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if (dataSource.isEmpty())
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continue;
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kexipluginsdbg << obj->name() << endl;
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m_dataItems.append( formDataItem );
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formDataItem->installListener( this );
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tmpSources.replace( dataSource, (char*)1 );
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}
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delete l;
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//now we've got a set (unique list) of field names in tmpSources
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//remember it in m_usedDataSources
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for (TQDictIterator<char> it(tmpSources); it.current(); ++it) {
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m_usedDataSources += it.currentKey();
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}
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}
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void KexiFormDataProvider::fillDataItems(KexiTableItem& row, bool cursorAtNewRow)
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{
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kexipluginsdbg << "KexiFormDataProvider::fillDataItems() cnt=" << row.count() << endl;
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for (KexiFormDataItemInterfaceToIntMap::ConstIterator it = m_fieldNumbersForDataItems.constBegin();
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it!=m_fieldNumbersForDataItems.constEnd(); ++it)
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{
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KexiFormDataItemInterface *itemIface = it.key();
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if (!itemIface->columnInfo()) {
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kexipluginsdbg << "KexiFormDataProvider::fillDataItems(): itemIface->columnInfo() == 0" << endl;
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continue;
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}
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//1. Is this a value with a combo box (lookup)?
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int indexForVisibleLookupValue = itemIface->columnInfo()->indexForVisibleLookupValue();
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if (indexForVisibleLookupValue<0 && indexForVisibleLookupValue>=(int)row.count()) //sanity
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indexForVisibleLookupValue = -1; //no
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const TQVariant value(row.at(it.data()));
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TQVariant visibleLookupValue;
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if (indexForVisibleLookupValue!=-1 && (int)row.size()>indexForVisibleLookupValue)
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visibleLookupValue = row.at(indexForVisibleLookupValue);
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kexipluginsdbg << "fill data of '" << itemIface->dataSource() << "' at idx=" << it.data()
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<< " data=" << value << (indexForVisibleLookupValue!=-1
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? TQString(" SPECIAL: indexForVisibleLookupValue=%1 visibleValue=%2")
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.arg(indexForVisibleLookupValue).arg(visibleLookupValue.toString())
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: TQString())
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<< endl;
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const bool displayDefaultValue = cursorAtNewRow && (value.isNull() && visibleLookupValue.isNull())
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&& !itemIface->columnInfo()->field->defaultValue().isNull()
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&& !itemIface->columnInfo()->field->isAutoIncrement(); //no value to set but there is default value defined
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itemIface->setValue(
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displayDefaultValue ? itemIface->columnInfo()->field->defaultValue() : value,
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TQVariant(), /*add*/
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/*!remove old*/false,
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indexForVisibleLookupValue==-1 ? 0 : &visibleLookupValue //pass visible value if available
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);
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// now disable/enable "display default value" if needed (do it after setValue(), before setValue() turns it off)
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if (itemIface->hasDisplayedDefaultValue() != displayDefaultValue)
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itemIface->setDisplayDefaultValue( dynamic_cast<TQWidget*>(itemIface), displayDefaultValue );
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}
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}
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void KexiFormDataProvider::fillDuplicatedDataItems(
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KexiFormDataItemInterface* item, const TQVariant& value)
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{
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if (m_disableFillDuplicatedDataItems)
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return;
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if (!m_duplicatedItems) {
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//build (once) a set of duplicated data items (having the same fields assigned)
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//so we can later check if an item is duplicated with a cost of o(1)
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TQMap<KexiDB::Field*,int> tmpDuplicatedItems;
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TQMapIterator<KexiDB::Field*,int> it_dup;
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for (TQPtrListIterator<KexiFormDataItemInterface> it(m_dataItems); it.current(); ++it) {
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if (!it.current()->columnInfo() || !it.current()->columnInfo()->field)
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continue;
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kdDebug() << " ** " << it.current()->columnInfo()->field->name() << endl;
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it_dup = tmpDuplicatedItems.find( it.current()->columnInfo()->field );
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uint count;
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if (it_dup==tmpDuplicatedItems.end())
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count = 0;
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else
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count = it_dup.data();
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tmpDuplicatedItems.insert( it.current()->columnInfo()->field, ++count );
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}
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m_duplicatedItems = new TQPtrDict<char>(1009);
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for (it_dup = tmpDuplicatedItems.begin(); it_dup!=tmpDuplicatedItems.end(); ++it_dup) {
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if (it_dup.data() > 1) {
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m_duplicatedItems->insert( it_dup.key(), (char*)1 );
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kexipluginsdbg << "duplicated item: " << static_cast<KexiDB::Field*>(it_dup.key())->name()
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<< " (" << it_dup.data() << " times)" << endl;
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}
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}
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}
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if (item->columnInfo() && m_duplicatedItems->find( item->columnInfo()->field )) {
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for (TQPtrListIterator<KexiFormDataItemInterface> it(m_dataItems); it.current(); ++it) {
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if (it.current()!=item && item->columnInfo()->field == it.current()->columnInfo()->field) {
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kexipluginsdbg << "- setting a copy of value for item '"
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<< dynamic_cast<TQObject*>(it.current())->name() << "' == " << value << endl;
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it.current()->setValue( value );
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}
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}
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}
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}
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void KexiFormDataProvider::valueChanged(KexiDataItemInterface* item)
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{
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Q_UNUSED( item );
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}
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bool KexiFormDataProvider::cursorAtNewRow() const
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{
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return false;
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}
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void KexiFormDataProvider::invalidateDataSources( const TQDict<char>& invalidSources,
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KexiDB::QuerySchema* query)
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{
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//fill m_fieldNumbersForDataItems mapping from data item to field number
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//(needed for fillDataItems)
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KexiDB::QueryColumnInfo::Vector fieldsExpanded;
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// uint dataFieldsCount; // == fieldsExpanded.count() if query is available or else == m_dataItems.count()
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if (query) {
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fieldsExpanded = query->fieldsExpanded( KexiDB::QuerySchema::WithInternalFields );
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// dataFieldsCount = fieldsExpanded.count();
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TQMap<KexiDB::QueryColumnInfo*,int> columnsOrder( query->columnsOrder() );
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for (TQMapConstIterator<KexiDB::QueryColumnInfo*,int> it = columnsOrder.constBegin(); it!=columnsOrder.constEnd(); ++it) {
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kexipluginsdbg << "query->columnsOrder()[ " << it.key()->field->name() << " ] = " << it.data() << endl;
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}
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for (TQPtrListIterator<KexiFormDataItemInterface> it(m_dataItems); it.current(); ++it) {
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KexiFormDataItemInterface *item = it.current();
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KexiDB::QueryColumnInfo* ci = query->columnInfo( it.current()->dataSource() );
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int index = ci ? columnsOrder[ ci ] : -1;
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kexipluginsdbg << "query->columnsOrder()[ " << (ci ? ci->field->name() : "") << " ] = " << index
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<< " (dataSource: " << item->dataSource() << ", name=" << dynamic_cast<TQObject*>(item)->name() << ")" << endl;
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if (index!=-1 && !m_fieldNumbersForDataItems[ item ])
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m_fieldNumbersForDataItems.insert( item, index );
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//todo
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//WRONG: not only used data sources can be fetched!
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// m_fieldNumbersForDataItems.insert( it.current(),
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// m_usedDataSources.findIndex(it.current()->dataSource().lower()) );
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}
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}
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else {//!query
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// dataFieldsCount = m_dataItems.count();
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}
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#if 0 //moved down
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//in 'newIndices' let's collect new indices for every data source
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foreach(TQValueList<uint>::ConstIterator, it, invalidSources) {
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//all previous indices have corresponding data source
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// for (; i < (*it); i++) {
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// newIndices[i] = number++;
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//kexipluginsdbg << "invalidateDataSources(): " << i << " -> " << number-1 << endl;
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// }
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//this index have no corresponding data source
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// newIndices[i]=-1;
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KexiFormDataItemInterface *item = m_dataItems.at( *it );
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if (item)
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item->setInvalidState( TQString::fromLatin1("#") + i18n("NAME") + TQString::fromLatin1("?") );
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m_dataItems.remove(*it);
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kexipluginsdbg << "invalidateDataSources(): " << (*it) << " -> " << -1 << endl;
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// i++;
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}
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#endif
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//fill remaining part of the vector
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// for (; i < dataFieldsCount; i++) { //m_dataItems.count(); i++) {
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//newIndices[i] = number++;
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//kexipluginsdbg << "invalidateDataSources(): " << i << " -> " << number-1 << endl;
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//}
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#if 0
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//recreate m_fieldNumbersForDataItems and mark widgets with invalid data sources
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KexiFormDataItemInterfaceToIntMap newFieldNumbersForDataItems;
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foreach(KexiFormDataItemInterfaceToIntMap::ConstIterator, it, m_fieldNumbersForDataItems) {
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bool ok;
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const int newIndex = newIndices.at( it.data(), &ok );
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if (ok && newIndex!=-1) {
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kexipluginsdbg << "invalidateDataSources(): " << it.key()->dataSource() << ": " << it.data() << " -> " << newIndex << endl;
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newFieldNumbersForDataItems.replace(it.key(), newIndex);
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}
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else {
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kexipluginsdbg << "invalidateDataSources(): removing " << it.key()->dataSource() << endl;
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m_dataItems.remove(it.key());
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it.key()->setInvalidState( TQString::fromLatin1("#") + i18n("NAME") + TQString::fromLatin1("?") );
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}
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}
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#endif
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// m_fieldNumbersForDataItems = newFieldNumbersForDataItems;
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//update data sources set (some of them may be removed)
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TQDict<char> tmpUsedDataSources(1009);
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if (query)
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query->debug();
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//if (query && m_dataItems.count()!=query->fieldCount()) {
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// kdWarning() << "KexiFormDataProvider::invalidateDataSources(): m_dataItems.count()!=query->fieldCount() ("
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// << m_dataItems.count() << "," << query->fieldCount() << ")" << endl;
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//}
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//i = 0;
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m_disableFillDuplicatedDataItems = true; // temporary disable fillDuplicatedDataItems()
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// because setColumnInfo() can activate it
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for (TQPtrListIterator<KexiFormDataItemInterface> it(m_dataItems); it.current();) {
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KexiFormDataItemInterface * item = it.current();
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if (invalidSources[ item->dataSource().lower() ]) {
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item->setInvalidState( TQString::fromLatin1("#") + i18n("NAME") + TQString::fromLatin1("?") );
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m_dataItems.remove(item);
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continue;
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}
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uint fieldNumber = m_fieldNumbersForDataItems[ item ];
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if (query) {
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KexiDB::QueryColumnInfo *ci = fieldsExpanded[fieldNumber];
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item->setColumnInfo(ci);
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kexipluginsdbg << "- item=" << dynamic_cast<TQObject*>(item)->name()
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<< " dataSource=" << item->dataSource()
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<< " field=" << ci->field->name() << endl;
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const int indexForVisibleLookupValue = ci->indexForVisibleLookupValue();
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if (-1 != indexForVisibleLookupValue && indexForVisibleLookupValue < (int)fieldsExpanded.count()) {
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//there's lookup column defined: set visible column as well
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KexiDB::QueryColumnInfo *visibleColumnInfo = fieldsExpanded[ indexForVisibleLookupValue ];
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if (visibleColumnInfo) {
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item->setVisibleColumnInfo( visibleColumnInfo );
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if (dynamic_cast<KexiComboBoxBase*>(item) && m_mainWidget
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&& dynamic_cast<KexiComboBoxBase*>(item)->internalEditor())
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{
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// m_mainWidget (dbform) should filter the (just created using setVisibleColumnInfo())
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// combo box' internal editor (actually, only if the combo is in 'editable' mode)
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dynamic_cast<KexiComboBoxBase*>(item)->internalEditor()->installEventFilter(m_mainWidget);
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}
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kexipluginsdbg << " ALSO SET visibleColumn=" << visibleColumnInfo->debugString()
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<< "\n at position " << indexForVisibleLookupValue << endl;
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}
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}
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}
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tmpUsedDataSources.replace( item->dataSource().lower(), (char*)1 );
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++it;
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}
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m_disableFillDuplicatedDataItems = false;
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m_usedDataSources.clear();
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foreach_list(TQDictIterator<char>, it, tmpUsedDataSources) {
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m_usedDataSources += it.currentKey();
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}
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}
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