+/***************************************************************************
+ * Copyright (C) 2009 by Adam Kidder <thekidder@gmail.com> *
+ * Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at> *
+ * *
+ * 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) 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 General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
+ ***************************************************************************/
+
+#include "searchcriterionselector.h"
+
+#include "searchcriterionvalue.h"
+
+#include <QComboBox>
+#include <QHBoxLayout>
+#include <QList>
+#include <QPushButton>
+
+#include <kicon.h>
+#include <klocale.h>
+
+SearchCriterionSelector::SearchCriterionSelector(QWidget* parent) :
+ QWidget(parent),
+ m_layout(0),
+ m_descriptionsBox(0),
+ m_comparatorBox(0),
+ m_valueWidget(0),
+ m_removeButton(0),
+ m_descriptions()
+{
+ m_descriptionsBox = new QComboBox(this);
+ m_descriptionsBox->addItem(i18nc("@label", "Select..."), -1);
+ createDescriptions();
+ connect(m_descriptionsBox, SIGNAL(currentIndexChanged(int)), this, SLOT(slotDescriptionChanged(int)));
+
+ m_comparatorBox = new QComboBox(this);
+ m_comparatorBox->hide();
+ connect(m_comparatorBox, SIGNAL(currentIndexChanged(int)), this, SLOT(updateQuery()));
+
+ QWidget* filler = new QWidget(this);
+ filler->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+
+ m_removeButton = new QPushButton(this);
+ m_removeButton->setIcon(KIcon("list-remove"));
+ m_removeButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+ connect(m_removeButton, SIGNAL(clicked()), this, SIGNAL(removeCriterion()));
+
+ m_layout = new QHBoxLayout(this);
+ m_layout->setMargin(0);
+ m_layout->addWidget(m_descriptionsBox);
+ m_layout->addWidget(m_comparatorBox);
+ m_layout->addWidget(filler);
+ m_layout->addWidget(m_removeButton);
+
+ setLayout(m_layout);
+}
+
+SearchCriterionSelector::~SearchCriterionSelector()
+{
+}
+
+void SearchCriterionSelector::createDescriptions()
+{
+ // TODO: maybe this creation should be forwarded to a factory if
+ // the number of items increases in future
+
+ QList<SearchCriterionDescription::Comparator> comparators;
+ comparators.append(SearchCriterionDescription::Comparator(i18nc("@label", "greater than"), ">", "+"));
+ comparators.append(SearchCriterionDescription::Comparator(i18nc("@label", "greater than or equal to"), ">=", "+"));
+ comparators.append(SearchCriterionDescription::Comparator(i18nc("@label", "less than"), "<", "+"));
+ comparators.append(SearchCriterionDescription::Comparator(i18nc("@label", "less than or equal to"), "<=", "+"));
+
+ // add "Date" description
+ DateValue* dateValue = new DateValue(this);
+ dateValue->hide();
+ SearchCriterionDescription date(i18nc("@label", "Date Modified"),
+ "sourceModified",
+ comparators,
+ dateValue);
+
+ // add "File Size" description
+ FileSizeValue* fileSizeValue = new FileSizeValue(this);
+ fileSizeValue->hide();
+ SearchCriterionDescription size(i18nc("@label", "File Size"),
+ "contentSize",
+ comparators,
+ fileSizeValue);
+
+ m_descriptions.append(date);
+ m_descriptions.append(size);
+
+ // add all descriptions to the combo box
+ const int count = m_descriptions.count();
+ for (int i = 0; i < count; ++i) {
+ m_descriptionsBox->addItem(m_descriptions[i].name(), i);
+ }
+}
+
+void SearchCriterionSelector::slotDescriptionChanged(int index)
+{
+ m_comparatorBox->clear();
+ m_comparatorBox->show();
+ if (m_valueWidget != 0) {
+ m_layout->removeWidget(m_valueWidget);
+ // the value widget is obtained by the Search Criterion
+ // Selector instance and may not get deleted
+ }
+
+ // adjust the comparator box and the value widget dependent from the selected description
+ m_comparatorBox->addItem(i18nc("@label", "Select..."), -1);
+ const int descrIndex = m_descriptionsBox->itemData(index).toInt();
+ if (descrIndex >= 0) {
+ // add comparator items
+ const SearchCriterionDescription& description = m_descriptions[descrIndex];
+ foreach (const SearchCriterionDescription::Comparator& comp, description.comparators()) {
+ m_comparatorBox->addItem(comp.name);
+ }
+
+ // add value widget
+ m_valueWidget = description.valueWidget();
+ const int layoutIndex = m_layout->count() - 2;
+ m_layout->insertWidget(layoutIndex, m_valueWidget);
+ m_valueWidget->show();
+ }
+}
+
+void SearchCriterionSelector::updateQuery()
+{
+ const SearchCriterionDescription* descr = description();
+ if (descr == 0) {
+ // no description has been selected
+ return;
+ }
+
+ // get selected comparator related to the description
+ const int compBoxIndex = m_comparatorBox->currentIndex();
+ const int compIndex = m_comparatorBox->itemData(compBoxIndex).toInt();
+ if (compIndex < 0) {
+ // no comparator has been selected
+ return;
+ }
+
+ // create query string
+ const SearchCriterionDescription::Comparator& comp = descr->comparators()[compIndex];
+ const QString queryString = comp.prefix + descr->identifier() + comp.operation + m_valueWidget->value();
+ emit criterionChanged(queryString);
+}
+
+const SearchCriterionDescription* SearchCriterionSelector::description() const
+{
+ const int descrBoxIndex = m_descriptionsBox->currentIndex();
+ const int descrIndex = m_descriptionsBox->itemData(descrBoxIndex).toInt();
+ return (descrIndex < 0) ? 0 : &m_descriptions[descrIndex];
+}
+
+#include "searchcriterionselector.moc"
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