File indexing completed on 2024-05-12 05:09:46

 /***************************************************************************
     Copyright (C) 2005-2009 Robby Stephenson <robby@periapsis.org>
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *   This program is free software; you can redistribute it and/or         *
  *   modify it under the terms of the GNU General Public License as        *
  *   published by the Free Software Foundation; either version 2 of        *
  *   the License or (at your option) version 3 or any later version        *
  *   accepted by the membership of KDE e.V. (or its successor approved     *
  *   by the membership of KDE e.V.), which shall act as a proxy            *
  *   defined in Section 14 of version 3 of the license.                    *
  *                                                                         *
  *   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 General Public License for more details.                          *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  *                                                                         *
  ***************************************************************************/
 
 #include "choicefieldwidget.h"
 #include "../field.h"
 
 #include <QComboBox>
 #include <QGuiApplication>
 #include <QScreen>
 
 namespace {
   const double MAX_FRACTION_SCREEN_WIDTH = 0.4;
 }
 
 using Tellico::GUI::ChoiceFieldWidget;
 
 ChoiceFieldWidget::ChoiceFieldWidget(Tellico::Data::FieldPtr field_, QWidget* parent_)
     : FieldWidget(field_, parent_), m_comboBox(nullptr) {
 
   m_comboBox = new QComboBox(this);
   void (QComboBox::* indexChanged)(int) = &QComboBox::currentIndexChanged;
   connect(m_comboBox, indexChanged, this, &ChoiceFieldWidget::checkModified);
   m_maxTextWidth = MAX_FRACTION_SCREEN_WIDTH * QGuiApplication::primaryScreen()->size().width();
 
   QStringList values = field_->allowed();
   // always have empty choice, but don't show two empty values
   values.removeAll(QString());
 
   const QFontMetrics& fm = fontMetrics();
   m_comboBox->addItem(QString(), QString());
   foreach(const QString& value, values) {
     m_comboBox->addItem(fm.elidedText(value, Qt::ElideMiddle, m_maxTextWidth), value);
   }
 
   m_comboBox->setMinimumWidth(5*fm.maxWidth());
   registerWidget();
 }
 
 QString ChoiceFieldWidget::text() const {
   return m_comboBox->currentData().toString();
 }
 
 void ChoiceFieldWidget::setTextImpl(const QString& text_) {
   int idx = m_comboBox->findData(text_);
   if(idx < 0) {
     m_comboBox->addItem(fontMetrics().elidedText(text_, Qt::ElideMiddle, m_maxTextWidth), text_);
     m_comboBox->setCurrentIndex(m_comboBox->count()-1);
   } else {
     m_comboBox->setCurrentIndex(idx);
   }
 }
 
 void ChoiceFieldWidget::clearImpl() {
   m_comboBox->setCurrentIndex(0); // first item is empty
   editMultiple(false);
 }
 
 void ChoiceFieldWidget::updateFieldHook(Tellico::Data::FieldPtr, Tellico::Data::FieldPtr newField_) {
   const QString oldValue = text();
   int idx = m_comboBox->currentIndex();
   m_comboBox->blockSignals(true);
   m_comboBox->clear();
 
   QStringList values = newField_->allowed();
   values.removeAll(QString());
 
   const QFontMetrics& fm = fontMetrics();
   // always have empty choice
   m_comboBox->addItem(QString(), QString());
   foreach(const QString& value, values) {
     m_comboBox->addItem(fm.elidedText(value, Qt::ElideMiddle, m_maxTextWidth), value);
   }
   m_comboBox->setCurrentIndex(idx);
   m_comboBox->blockSignals(false);
   setTextImpl(oldValue); // set back to previous value
 }
 
 QWidget* ChoiceFieldWidget::widget() {
   return m_comboBox;
 }