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Diffstat (limited to 'src/search/searchcriterionselector.cpp')
| -rw-r--r-- | src/search/searchcriterionselector.cpp | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/search/searchcriterionselector.cpp b/src/search/searchcriterionselector.cpp new file mode 100644 index 000000000..831e743e7 --- /dev/null +++ b/src/search/searchcriterionselector.cpp @@ -0,0 +1,167 @@ +/*************************************************************************** + * Copyright (C) 2009 by Adam Kidder <[email protected]> * + * Copyright (C) 2009 by Peter Penz <[email protected]> * + * * + * 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" |