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598 lines
19 KiB
598 lines
19 KiB
/* This file is part of the KDE project
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Copyright (C) 2002 Peter Simonsson <psn@linux.se>
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Copyright (C) 2003-2007 Jaroslaw Staniek <js@iidea.pl>
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This program 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 program 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 program; see the file COPYING. 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 <layout.h>
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#include <tqstyle.h>
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#include <tqwindowsstyle.h>
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#include <tqpainter.h>
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#include "kexicomboboxbase.h"
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#include <widget/utils/kexicomboboxdropdownbutton.h>
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#include "kexicomboboxpopup.h"
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#include "kexitableview.h"
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#include "kexitableitem.h"
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#include "kexi.h"
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#include <klineedit.h>
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KexiComboBoxBase::KexiComboBoxBase()
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{
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m_internalEditorValueChanged = false; //user has text or other value inside editor
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m_slotInternalEditorValueChanged_enabled = true;
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m_mouseBtnPressedWhenPopupVisible = false;
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m_insideCreatePopup = false;
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m_setValueOrTextInInternalEditor_enabled = true;
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m_updatePopupSelectionOnShow = true;
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m_moveCursorToEndInInternalEditor_enabled = true;
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m_selectAllInInternalEditor_enabled = true;
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m_setValueInInternalEditor_enabled = true;
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m_setVisibleValueOnSetValueInternal = false;
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}
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KexiComboBoxBase::~KexiComboBoxBase()
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{
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}
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KexiDB::LookupFieldSchema *KexiComboBoxBase::lookupFieldSchema() const
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{
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if (field() && field()->table()) {
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KexiDB::LookupFieldSchema *lookupFieldSchema = field()->table()->lookupFieldSchema( *field() );
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if (lookupFieldSchema && !lookupFieldSchema->rowSource().name().isEmpty())
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return lookupFieldSchema;
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}
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return 0;
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}
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int KexiComboBoxBase::rowToHighlightForLookupTable() const
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{
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if (!popup())
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return -1;//err
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KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
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if (!lookupFieldSchema)
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return -1;
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if (lookupFieldSchema->boundColumn()==-1)
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return -1; //err
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bool ok;
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const int rowUid = origValue().toInt();
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//! @todo for now we're assuming the id is INTEGER
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KexiTableViewData *tvData = popup()->tableView()->KexiDataAwareObjectInterface::data();
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const int boundColumn = lookupFieldSchema->boundColumn();
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KexiTableViewData::Iterator it(tvData->iterator());
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int row=0;
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for (;it.current();++it, row++)
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{
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if (it.current()->at(boundColumn).toInt(&ok) == rowUid && ok || !ok)
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break;
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}
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if (!ok || !it.current()) //item not found: highlight 1st row, if available
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return -1;
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return row;
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}
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void KexiComboBoxBase::setValueInternal(const TQVariant& add_, bool removeOld)
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{
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Q_UNUSED(removeOld);
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m_mouseBtnPressedWhenPopupVisible = false;
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m_updatePopupSelectionOnShow = true;
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TQString add(add_.toString());
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if (add.isEmpty()) {
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KexiTableViewData *relData = column() ? column()->relatedData() : 0;
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TQVariant valueToSet;
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bool hasValueToSet = true;
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int rowToHighlight = -1;
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KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
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if (lookupFieldSchema) {
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//use 'lookup field' model
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//! @todo support more RowSourceType's, not only table
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if (lookupFieldSchema->boundColumn()==-1)
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//! @todo errmsg
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return;
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if (m_setVisibleValueOnSetValueInternal) {
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//only for table views
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if (!popup())
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createPopup(false/*!show*/);
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}
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if (popup()) {
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const int rowToHighlight = rowToHighlightForLookupTable();
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popup()->tableView()->setHighlightedRow(rowToHighlight);
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const int visibleColumn = lookupFieldSchema->visibleColumn( popup()->tableView()->KexiDataAwareObjectInterface::data()->columnsCount() );
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if (m_setVisibleValueOnSetValueInternal && -1!=visibleColumn) {
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//only for table views
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KexiTableItem *it = popup()->tableView()->highlightedItem();
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if (it)
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valueToSet = it->at( visibleColumn );
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}
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else {
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hasValueToSet = false;
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}
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}
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}
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else if (relData) {
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//use 'related table data' model
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valueToSet = valueForString(origValue().toString(), &rowToHighlight, 0, 1);
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}
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else {
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//use 'enum hints' model
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const int row = origValue().toInt();
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valueToSet = field()->enumHint(row).stripWhiteSpace();
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}
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if (hasValueToSet)
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setValueOrTextInInternalEditor( valueToSet );
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/*impl.*/moveCursorToEndInInternalEditor();
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/*impl.*/selectAllInInternalEditor();
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if (popup()) {
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if (origValue().isNull()) {
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popup()->tableView()->clearSelection();
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popup()->tableView()->setHighlightedRow(0);
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} else {
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if (relData) {
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if (rowToHighlight!=-1)
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popup()->tableView()->setHighlightedRow(rowToHighlight);
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}
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else if (!lookupFieldSchema) {
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//popup()->tableView()->selectRow(origValue().toInt());
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popup()->tableView()->setHighlightedRow(origValue().toInt());
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}
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}
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}
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}
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else {
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//todo: autocompl.?
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if (popup())
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popup()->tableView()->clearSelection();
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/*impl.*/setValueInInternalEditor(add); //not setLineEditText(), because 'add' is entered by user!
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//setLineEditText( add );
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/*impl.*/moveCursorToEndInInternalEditor();
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}
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}
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KexiTableItem* KexiComboBoxBase::selectItemForEnteredValueInLookupTable(const TQVariant& v)
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{
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KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
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if (!popup() || !lookupFieldSchema)
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return 0; //safety
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//-not effective for large sets: please cache it!
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//.stripWhiteSpace() is not generic!
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const bool valueIsText = v.type()==TQVariant::String || v.type()==TQVariant::CString; //most common case
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const TQString txt( valueIsText ? v.toString().stripWhiteSpace().lower() : TQString() );
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KexiTableViewData *lookupData = popup()->tableView()->KexiDataAwareObjectInterface::data();
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const int visibleColumn = lookupFieldSchema->visibleColumn( lookupData->columnsCount() );
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if (-1 == visibleColumn)
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return 0;
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KexiTableViewData::Iterator it(lookupData->iterator());
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int row;
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for (row = 0;it.current();++it, row++) {
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if (valueIsText) {
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if (it.current()->at(visibleColumn).toString().stripWhiteSpace().lower() == txt)
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break;
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}
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else {
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if (it.current()->at(visibleColumn) == v)
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break;
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}
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}
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m_setValueOrTextInInternalEditor_enabled = false; // <-- this is the entered value,
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// so do not change the internal editor's contents
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if (it.current())
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popup()->tableView()->selectRow(row);
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else
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popup()->tableView()->clearSelection();
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m_setValueOrTextInInternalEditor_enabled = true;
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return it.current();
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}
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TQString KexiComboBoxBase::valueForString(const TQString& str, int* row,
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uint lookInColumn, uint returnFromColumn, bool allowNulls)
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{
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KexiTableViewData *relData = column() ? column()->relatedData() : 0;
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if (!relData)
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return TQString(); //safety
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//use 'related table data' model
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//-not effective for large sets: please cache it!
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//.stripWhiteSpace() is not generic!
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const TQString txt = str.stripWhiteSpace().lower();
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KexiTableViewData::Iterator it( relData->iterator() );
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for (*row = 0;it.current();++it, (*row)++) {
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if (it.current()->at(lookInColumn).toString().stripWhiteSpace().lower()==txt)
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break;
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}
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if (it.current())
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return it.current()->at(returnFromColumn).toString();
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*row = -1;
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if (column() && column()->relatedDataEditable())
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return str; //new value entered and that's allowed
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kexiwarn << "KexiComboBoxBase::valueForString(): no related row found, ID will be painted!" << endl;
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if (allowNulls)
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return TQString();
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return str; //for sanity but it's weird to show id to the user
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}
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TQVariant KexiComboBoxBase::value()
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{
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KexiTableViewData *relData = column() ? column()->relatedData() : 0;
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KexiDB::LookupFieldSchema *lookupFieldSchema = 0;
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if (relData) {
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if (m_internalEditorValueChanged) {
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//we've user-entered text: look for id
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//TODO: make error if matching text not found?
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int rowToHighlight;
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return valueForString(m_userEnteredValue.toString(), &rowToHighlight, 1, 0, true/*allowNulls*/);
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}
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else {
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//use 'related table data' model
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KexiTableItem *it = popup() ? popup()->tableView()->selectedItem() : 0;
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return it ? it->at(0) : origValue();//TQVariant();
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}
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}
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else if ((lookupFieldSchema = this->lookupFieldSchema()))
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{
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if (lookupFieldSchema->boundColumn()==-1)
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return origValue();
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KexiTableItem *it = popup() ? popup()->tableView()->selectedItem() : 0;
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if (/*!it &&*/ m_internalEditorValueChanged && !m_userEnteredValue.toString().isEmpty()) { //
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//try to select a row using the user-entered text
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if (!popup()) {
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TQVariant prevUserEnteredValue = m_userEnteredValue;
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createPopup(false);
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m_userEnteredValue = prevUserEnteredValue;
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}
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it = selectItemForEnteredValueInLookupTable( m_userEnteredValue );
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}
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return it ? it->at( lookupFieldSchema->boundColumn() ) : TQVariant();
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}
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else if (popup()) {
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//use 'enum hints' model
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const int row = popup()->tableView()->currentRow();
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if (row>=0)
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return TQVariant( row );
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}
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if (valueFromInternalEditor().toString().isEmpty())
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return TQVariant();
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/*! \todo don't return just 1st row, but use autocompletion feature
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and: show message box if entered text does not match! */
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return origValue(); //unchanged
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}
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TQVariant KexiComboBoxBase::visibleValueForLookupField()
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{
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KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
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if (!popup() || !lookupFieldSchema)
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return TQVariant();
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const int visibleColumn = lookupFieldSchema->visibleColumn( popup()->tableView()->KexiDataAwareObjectInterface::data()->columnsCount() );
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if (-1 == visibleColumn)
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return TQVariant();
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KexiTableItem *it = popup()->tableView()->selectedItem();
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return it ? it->at( TQMIN( (uint)visibleColumn, it->count()-1)/*sanity*/ ) : TQVariant();
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}
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TQVariant KexiComboBoxBase::visibleValue()
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{
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return m_visibleValue;
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}
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void KexiComboBoxBase::clear()
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{
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if (popup())
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popup()->hide();
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slotInternalEditorValueChanged(TQVariant());
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}
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tristate KexiComboBoxBase::valueChangedInternal()
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{
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//avoid comparing values:
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KexiTableViewData *relData = column() ? column()->relatedData() : 0;
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KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
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if (relData || lookupFieldSchema) {
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if (m_internalEditorValueChanged)
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return true;
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//use 'related table data' model
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KexiTableItem *it = popup() ? popup()->tableView()->selectedItem() : 0;
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if (!it)
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return false;
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}
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else {
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//use 'enum hints' model
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const int row = popup() ? popup()->tableView()->currentRow() : -1;
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if (row<0 && !m_internalEditorValueChanged/*true if text box is cleared*/)
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return false;
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}
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return cancelled;
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}
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bool KexiComboBoxBase::valueIsNull()
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{
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// bool ok;
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TQVariant v( value() );
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return v.isNull();
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// return !ok || v.isNull();
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}
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bool KexiComboBoxBase::valueIsEmpty()
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{
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return valueIsNull();
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}
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void KexiComboBoxBase::showPopup()
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{
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createPopup(true);
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}
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void KexiComboBoxBase::createPopup(bool show)
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{
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if (!field())
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return;
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m_insideCreatePopup = true;
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TQWidget* thisWidget = dynamic_cast<TQWidget*>(this);
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TQWidget *widgetToFocus = internalEditor() ? internalEditor() : thisWidget;
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if (!popup()) {
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setPopup( column() ? new KexiComboBoxPopup(thisWidget, *column())
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: new KexiComboBoxPopup(thisWidget, *field()) );
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TQObject::connect(popup(), TQT_SIGNAL(rowAccepted(KexiTableItem*,int)),
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thisWidget, TQT_SLOT(slotRowAccepted(KexiTableItem*,int)));
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TQObject::connect(popup()->tableView(), TQT_SIGNAL(itemSelected(KexiTableItem*)),
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thisWidget, TQT_SLOT(slotItemSelected(KexiTableItem*)));
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popup()->setFocusProxy( widgetToFocus );
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popup()->tableView()->setFocusProxy( widgetToFocus );
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popup()->installEventFilter(thisWidget);
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if (origValue().isNull())
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popup()->tableView()->clearSelection();
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else {
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popup()->tableView()->selectRow( 0 );
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popup()->tableView()->setHighlightedRow( 0 );
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}
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}
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if (show && internalEditor() && !internalEditor()->isVisible())
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/*emit*/editRequested();
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TQPoint posMappedToGlobal = mapFromParentToGlobal(thisWidget->pos());
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if (posMappedToGlobal != TQPoint(-1,-1)) {
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//! todo alter the position to fit the popup within screen boundaries
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popup()->move( posMappedToGlobal + TQPoint(0, thisWidget->height()) );
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//to avoid flickering: first resize to 0-height, then show and resize back to prev. height
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const int w = popupWidthHint();
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popup()->resize(w, 0);
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if (show)
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popup()->show();
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popup()->updateSize(w);
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if (m_updatePopupSelectionOnShow) {
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int rowToHighlight = -1;
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KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
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KexiTableViewData *relData = column() ? column()->relatedData() : 0;
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if (lookupFieldSchema) {
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rowToHighlight = rowToHighlightForLookupTable();
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}
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else if (relData) {
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(void)valueForString(origValue().toString(), &rowToHighlight, 0, 1);
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}
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else //enum hint
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rowToHighlight = origValue().toInt();
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/*-->*/ m_moveCursorToEndInInternalEditor_enabled = show;
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m_selectAllInInternalEditor_enabled = show;
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m_setValueInInternalEditor_enabled = show;
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if (rowToHighlight==-1) {
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rowToHighlight = TQMAX( popup()->tableView()->highlightedRow(), 0);
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setValueInInternalEditor(TQVariant());
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}
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popup()->tableView()->selectRow( rowToHighlight );
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popup()->tableView()->setHighlightedRow( rowToHighlight );
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if (rowToHighlight < popup()->tableView()->rowsPerPage())
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popup()->tableView()->ensureCellVisible( 0, -1 );
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/*-->*/ m_moveCursorToEndInInternalEditor_enabled = true;
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m_selectAllInInternalEditor_enabled = true;
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m_setValueInInternalEditor_enabled = true;
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}
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}
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if (show) {
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moveCursorToEndInInternalEditor();
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selectAllInInternalEditor();
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widgetToFocus->setFocus();
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}
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m_insideCreatePopup = false;
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}
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void KexiComboBoxBase::hide()
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{
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if (popup())
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popup()->hide();
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}
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void KexiComboBoxBase::slotRowAccepted(KexiTableItem * item, int row)
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{
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Q_UNUSED(row);
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//update our value
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//..nothing to do?
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updateButton();
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slotItemSelected(item);
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/*emit*/acceptRequested();
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}
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void KexiComboBoxBase::acceptPopupSelection()
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{
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if (!popup())
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return;
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KexiTableItem *item = popup()->tableView()->highlightedItem();
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if (item) {
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popup()->tableView()->selectRow( popup()->tableView()->highlightedRow() );
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slotRowAccepted(item, -1);
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}
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popup()->hide();
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}
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void KexiComboBoxBase::slotItemSelected(KexiTableItem*)
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{
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kexidbg << "KexiComboBoxBase::slotItemSelected(): m_visibleValue = " << m_visibleValue << endl;
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TQVariant valueToSet;
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KexiTableViewData *relData = column() ? column()->relatedData() : 0;
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KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
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m_visibleValue = lookupFieldSchema ? visibleValueForLookupField() : TQVariant();
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if (relData) {
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//use 'related table data' model
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KexiTableItem *item = popup()->tableView()->selectedItem();
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if (item)
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valueToSet = item->at(1);
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}
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else if (lookupFieldSchema) {
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KexiTableItem *item = popup()->tableView()->selectedItem();
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const int visibleColumn = lookupFieldSchema->visibleColumn( popup()->tableView()->KexiDataAwareObjectInterface::data()->columnsCount() );
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if (item && visibleColumn!=-1 /* && (int)item->size() >= visibleColumn --already checked*/) {
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valueToSet = item->at( TQMIN( (uint)visibleColumn, item->count()-1)/*sanity*/ );
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}
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}
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else {
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//use 'enum hints' model
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valueToSet = field()->enumHint( popup()->tableView()->currentRow() );
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if (valueToSet.toString().isEmpty() && !m_insideCreatePopup) {
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clear();
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TQWidget* thisWidget = dynamic_cast<TQWidget*>(this);
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thisWidget->parentWidget()->setFocus();
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return;
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}
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}
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setValueOrTextInInternalEditor( valueToSet );
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if (m_setValueOrTextInInternalEditor_enabled) {
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moveCursorToEndInInternalEditor();
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selectAllInInternalEditor();
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|
}
|
|
// a new (temp) popup table index is selected: do not update selection next time:
|
|
m_updatePopupSelectionOnShow = false;
|
|
}
|
|
|
|
void KexiComboBoxBase::slotInternalEditorValueChanged(const TQVariant& v)
|
|
{
|
|
if (!m_slotInternalEditorValueChanged_enabled)
|
|
return;
|
|
m_userEnteredValue = v;
|
|
m_internalEditorValueChanged = true;
|
|
if (v.toString().isEmpty()) {
|
|
if (popup()) {
|
|
popup()->tableView()->clearSelection();
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
void KexiComboBoxBase::setValueOrTextInInternalEditor(const TQVariant& value)
|
|
{
|
|
if (!m_setValueOrTextInInternalEditor_enabled)
|
|
return;
|
|
setValueInInternalEditor( value );
|
|
//this text is not entered by hand:
|
|
m_userEnteredValue = TQVariant();
|
|
m_internalEditorValueChanged = false;
|
|
}
|
|
|
|
bool KexiComboBoxBase::handleKeyPressForPopup( TQKeyEvent *ke )
|
|
{
|
|
const int k = ke->key();
|
|
int highlightedOrSelectedRow = popup() ? popup()->tableView()->highlightedRow() : -1;
|
|
if (popup() && highlightedOrSelectedRow < 0)
|
|
highlightedOrSelectedRow = popup()->tableView()->currentRow();
|
|
|
|
const bool enterPressed = k==TQt::Key_Enter || k==TQt::Key_Return;
|
|
|
|
// The editor may be active but the pull down menu not existant/visible,
|
|
// e.g. when the user has pressed a normal button to activate the editor
|
|
// Don't handle the event here in that case.
|
|
if (!popup() || (!enterPressed && !popup()->isVisible())) {
|
|
return false;
|
|
}
|
|
|
|
switch (k) {
|
|
case TQt::Key_Up:
|
|
popup()->tableView()->setHighlightedRow(
|
|
TQMAX(highlightedOrSelectedRow-1, 0) );
|
|
updateTextForHighlightedRow();
|
|
return true;
|
|
case TQt::Key_Down:
|
|
popup()->tableView()->setHighlightedRow(
|
|
TQMIN(highlightedOrSelectedRow+1, popup()->tableView()->rows()-1) );
|
|
updateTextForHighlightedRow();
|
|
return true;
|
|
case TQt::Key_PageUp:
|
|
popup()->tableView()->setHighlightedRow(
|
|
TQMAX(highlightedOrSelectedRow-popup()->tableView()->rowsPerPage(), 0) );
|
|
updateTextForHighlightedRow();
|
|
return true;
|
|
case TQt::Key_PageDown:
|
|
popup()->tableView()->setHighlightedRow(
|
|
TQMIN(highlightedOrSelectedRow+popup()->tableView()->rowsPerPage(),
|
|
popup()->tableView()->rows()-1) );
|
|
updateTextForHighlightedRow();
|
|
return true;
|
|
case TQt::Key_Home:
|
|
popup()->tableView()->setHighlightedRow( 0 );
|
|
updateTextForHighlightedRow();
|
|
return true;
|
|
case TQt::Key_End:
|
|
popup()->tableView()->setHighlightedRow( popup()->tableView()->rows()-1 );
|
|
updateTextForHighlightedRow();
|
|
return true;
|
|
case TQt::Key_Enter:
|
|
case TQt::Key_Return: //accept
|
|
//select row that is highlighted
|
|
if (popup()->tableView()->highlightedRow()>=0)
|
|
popup()->tableView()->selectRow( popup()->tableView()->highlightedRow() );
|
|
//do not return true: allow to process event
|
|
default: ;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void KexiComboBoxBase::updateTextForHighlightedRow()
|
|
{
|
|
KexiTableItem *item = popup() ? popup()->tableView()->highlightedItem() : 0;
|
|
if (item)
|
|
slotItemSelected(item);
|
|
}
|
|
|
|
void KexiComboBoxBase::undoChanges()
|
|
{
|
|
KexiDB::LookupFieldSchema *lookupFieldSchema = this->lookupFieldSchema();
|
|
if (lookupFieldSchema) {
|
|
// kexidbg << "KexiComboBoxBase::undoChanges(): m_visibleValue BEFORE = " << m_visibleValue << endl;
|
|
if (popup())
|
|
popup()->tableView()->selectRow( popup()->tableView()->highlightedRow() );
|
|
m_visibleValue = visibleValueForLookupField();
|
|
// kexidbg << "KexiComboBoxBase::undoChanges(): m_visibleValue AFTER = " << m_visibleValue << endl;
|
|
setValueOrTextInInternalEditor( m_visibleValue );
|
|
}
|
|
}
|