434 lines
12 KiB
C++
434 lines
12 KiB
C++
#include <QSqlRecord>
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#include <QSqlError>
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#include <QSqlQuery>
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#include "qtsingleapplication/qtsingleapplication.h"
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#include "core/defs.h"
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#include "core/textfactory.h"
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#include "core/messagesmodel.h"
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#include "core/databasefactory.h"
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#include "gui/iconthemefactory.h"
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MessagesModel::MessagesModel(QObject *parent)
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: QSqlTableModel(parent,
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DatabaseFactory::getInstance()->addConnection("MessagesModel")) {
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setObjectName("MessagesModel");
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setupFonts();
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setupIcons();
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setupHeaderData();
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// Set desired table and edit strategy.
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// NOTE: Changes to the database are actually NOT submitted
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// via model, but DIRECT SQL calls are used to do persistent messages.
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setEditStrategy(QSqlTableModel::OnManualSubmit);
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setTable("Messages");
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loadMessages(QList<int>());
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}
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MessagesModel::~MessagesModel() {
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qDebug("Destroying MessagesModel instance.");
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}
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bool MessagesModel::submitAll() {
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qFatal("Submittting changes via model is not allowed.");
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return false;
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}
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void MessagesModel::setupIcons() {
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m_favoriteIcon = IconThemeFactory::getInstance()->fromTheme("mail-mark-important");
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m_readIcon = IconThemeFactory::getInstance()->fromTheme("mail-mark-read");
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m_unreadIcon = IconThemeFactory::getInstance()->fromTheme("mail-mark-unread");
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}
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void MessagesModel::fetchAll() {
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while (canFetchMore()) {
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fetchMore();
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}
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}
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void MessagesModel::setupFonts() {
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m_normalFont = QtSingleApplication::font("MessagesView");
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m_boldFont = m_normalFont;
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m_boldFont.setBold(true);
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}
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void MessagesModel::loadMessages(const QList<int> feed_ids) {
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// Conversion of parameter.
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m_currentFeeds = feed_ids;
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QStringList stringy_ids;
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stringy_ids.reserve(feed_ids.count());
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foreach (int feed_id, feed_ids) {
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stringy_ids.append(QString::number(feed_id));
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}
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// TODO: Enable when time is right.
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//setFilter(QString("feed IN (%1) AND deleted = 0").arg(stringy_ids.join(',')));
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setFilter(QString("deleted = 0").arg(stringy_ids.join(",")));
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select();
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fetchAll();
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}
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int MessagesModel::messageId(int row_index) const {
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return record(row_index).value(MSG_DB_ID_INDEX).toInt();
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}
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Message MessagesModel::messageAt(int row_index) const {
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QSqlRecord rec = record(row_index);
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Message message;
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// Fill Message object with details.
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message.m_author = rec.value(MSG_DB_AUTHOR_INDEX).toString();
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message.m_contents = rec.value(MSG_DB_CONTENTS_INDEX).toString();
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message.m_title = rec.value(MSG_DB_TITLE_INDEX).toString();
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message.m_url = rec.value(MSG_DB_URL_INDEX).toString();
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message.m_updated = TextFactory::parseDateTime(rec.value(MSG_DB_DUPDATED_INDEX).toString());
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return message;
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}
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void MessagesModel::setupHeaderData() {
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m_headerData << tr("Id") << tr("Read") << tr("Deleted") << tr("Important") <<
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tr("Feed") << tr("Title") << tr("Url") << tr("Author") <<
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tr("Created on") << tr("Updated on") << tr("Contents");
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m_tooltipData << tr("Id of the message.") << tr("Is message read?") <<
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tr("Is message deleted?") << tr("Is message important?") <<
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tr("Id of feed which this message belongs to.") <<
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tr("Title of the message.") << tr("Url of the message.") <<
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tr("Author of the message.") << tr("Creation date of the message.") <<
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tr("Date of the most recent update of the message.") << tr("Contents of the message.");
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}
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Qt::ItemFlags MessagesModel::flags(const QModelIndex &idx) const {
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Q_UNUSED(idx)
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#if QT_VERSION >= 0x050000
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if (m_isInEditingMode) {
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// NOTE: Editing of model must be temporarily enabled here.
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return Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsEditable;
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}
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else {
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return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
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}
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#else
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return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
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#endif
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}
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QVariant MessagesModel::data(int row, int column, int role) const {
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return data(index(row, column), role);
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}
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QVariant MessagesModel::data(const QModelIndex &idx, int role) const {
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switch (role) {
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// Human readable data for viewing.
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case Qt::DisplayRole: {
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int index_column = idx.column();
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if (index_column != MSG_DB_IMPORTANT_INDEX &&
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index_column != MSG_DB_READ_INDEX) {
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return QSqlTableModel::data(idx, role);
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}
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else {
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return QVariant();
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}
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}
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// Return RAW data for EditRole.
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case Qt::EditRole:
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return QSqlTableModel::data(idx, role);
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case Qt::FontRole:
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return record(idx.row()).value(MSG_DB_READ_INDEX).toInt() == 1 ?
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m_normalFont :
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m_boldFont;
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case Qt::DecorationRole: {
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int index_column = idx.column();
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if (index_column == MSG_DB_READ_INDEX) {
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return record(idx.row()).value(MSG_DB_READ_INDEX).toInt() == 1 ?
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m_readIcon :
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m_unreadIcon;
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}
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else if (index_column == MSG_DB_IMPORTANT_INDEX) {
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return record(idx.row()).value(MSG_DB_IMPORTANT_INDEX).toInt() == 1 ?
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m_favoriteIcon :
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QVariant();
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}
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else {
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return QVariant();
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}
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}
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default:
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return QVariant();
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}
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}
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bool MessagesModel::setData(const QModelIndex &idx, const QVariant &value, int role) {
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#if QT_VERSION >= 0x050000
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m_isInEditingMode = true;
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#endif
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bool set_data_result = QSqlTableModel::setData(idx, value, role);
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#if QT_VERSION >= 0x050000
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m_isInEditingMode = false;
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#endif
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return set_data_result;
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}
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bool MessagesModel::setMessageRead(int row_index, int read) {
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if (!database().transaction()) {
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qWarning("Starting transaction for batch message read change.");
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return false;
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}
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// Rewrite "visible" data in the model.
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bool working_change = setData(index(row_index, MSG_DB_READ_INDEX),
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read);
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if (!working_change) {
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// If rewriting in the model failed, then cancel all actions.
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return false;
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}
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QSqlDatabase db_handle = database();
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int message_id;
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QSqlQuery query_delete_msg(db_handle);
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if (!query_delete_msg.prepare("UPDATE messages SET read = :read "
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"WHERE id = :id")) {
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qWarning("Query preparation failed for message read change.");
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return false;
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}
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// Rewrite the actual data in the database itself.
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message_id = messageId(row_index);
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query_delete_msg.bindValue(":id", message_id);
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query_delete_msg.bindValue(":read", read);
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query_delete_msg.exec();
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// Commit changes.
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if (db_handle.commit()) {
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// If commit succeeded, then emit changes, so that view
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// can reflect.
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emit dataChanged(index(row_index, 0),
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index(row_index, columnCount() - 1));
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return true;
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}
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else {
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return db_handle.rollback();;
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}
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}
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bool MessagesModel::switchMessageImportance(int row_index) {
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if (!database().transaction()) {
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qWarning("Starting transaction for batch message importance switch failed.");
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return false;
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}
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QModelIndex target_index = index(row_index, MSG_DB_IMPORTANT_INDEX);
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int current_importance = data(target_index, Qt::EditRole).toInt();
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// Rewrite "visible" data in the model.
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bool working_change = current_importance == 1 ?
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setData(target_index, 0) :
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setData(target_index, 1);
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if (!working_change) {
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// If rewriting in the model failed, then cancel all actions.
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return false;
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}
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QSqlDatabase db_handle = database();
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int message_id;
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QSqlQuery query_delete_msg(db_handle);
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if (!query_delete_msg.prepare("UPDATE messages SET important = :important "
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"WHERE id = :id")) {
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qWarning("Query preparation failed for message importance switch.");
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return false;
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}
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message_id = messageId(row_index);
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query_delete_msg.bindValue(":id", message_id);
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query_delete_msg.bindValue(":important",
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current_importance == 1 ? 0 : 1);
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query_delete_msg.exec();
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// Commit changes.
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if (db_handle.commit()) {
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// If commit succeeded, then emit changes, so that view
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// can reflect.
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emit dataChanged(index(row_index, 0),
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index(row_index, columnCount() - 1));
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return true;
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}
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else {
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return db_handle.rollback();
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}
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}
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bool MessagesModel::switchBatchMessageImportance(const QModelIndexList &messages) {
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if (!database().transaction()) {
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qWarning("Starting transaction for batch message importance switch failed.");
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return false;
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}
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QSqlDatabase db_handle = database();
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int message_id, importance;
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QSqlQuery query_delete_msg(db_handle);
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if (!query_delete_msg.prepare("UPDATE messages SET important = :important "
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"WHERE id = :id")) {
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qWarning("Query preparation failed for message importance switch.");
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return false;
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}
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foreach (const QModelIndex &message, messages) {
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message_id = messageId(message.row());
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importance = data(message.row(), MSG_DB_IMPORTANT_INDEX, Qt::EditRole).toInt();
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query_delete_msg.bindValue(":id", message_id);
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query_delete_msg.bindValue(":important",
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importance == 1 ? 0 : 1);
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query_delete_msg.exec();
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}
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// Commit changes.
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if (db_handle.commit()) {
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// FULLY reload the model if underlying data is changed.
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select();
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fetchAll();
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return true;
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}
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else {
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return db_handle.rollback();
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}
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}
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bool MessagesModel::setBatchMessagesDeleted(const QModelIndexList &messages, int deleted) {
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if (!database().transaction()) {
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qWarning("Starting transaction for batch message deletion.");
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return false;
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}
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QSqlDatabase db_handle = database();
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int message_id;
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QSqlQuery query_delete_msg(db_handle);
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if (!query_delete_msg.prepare("UPDATE messages SET deleted = :deleted "
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"WHERE id = :id")) {
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qWarning("Query preparation failed for message deletion.");
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return false;
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}
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foreach (const QModelIndex &message, messages) {
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message_id = messageId(message.row());
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query_delete_msg.bindValue(":id", message_id);
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query_delete_msg.bindValue(":deleted", deleted);
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query_delete_msg.exec();
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}
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// Commit changes.
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if (db_handle.commit()) {
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// FULLY reload the model if underlying data is changed.
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select();
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fetchAll();
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return true;
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}
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else {
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return db_handle.rollback();
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}
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}
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bool MessagesModel::setBatchMessagesRead(const QModelIndexList &messages, int read) {
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if (!database().transaction()) {
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qWarning("Starting transaction for batch message read change.");
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return false;
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}
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QSqlDatabase db_handle = database();
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int message_id;
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QSqlQuery query_delete_msg(db_handle);
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if (!query_delete_msg.prepare("UPDATE messages SET read = :read "
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"WHERE id = :id")) {
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qWarning("Query preparation failed for message read change.");
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return false;
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}
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foreach (const QModelIndex &message, messages) {
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message_id = messageId(message.row());
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query_delete_msg.bindValue(":id", message_id);
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query_delete_msg.bindValue(":read", read);
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query_delete_msg.exec();
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}
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// Commit changes.
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if (db_handle.commit()) {
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// FULLY reload the model if underlying data is changed.
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select();
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fetchAll();
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return true;
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}
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else {
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return db_handle.rollback();
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}
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}
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bool MessagesModel::switchAllMessageImportance() {
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return false;
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}
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bool MessagesModel::setAllMessagesDeleted(int deleted) {
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return false;
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}
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bool MessagesModel::setAllMessagesRead(int read) {
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return false;
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}
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QVariant MessagesModel::headerData(int section,
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Qt::Orientation orientation,
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int role) const {
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Q_UNUSED(orientation)
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switch (role) {
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case Qt::DisplayRole:
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// Display textual headers for all columns except "read" and
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// "important" columns.
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if (section != MSG_DB_READ_INDEX && section != MSG_DB_IMPORTANT_INDEX) {
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return m_headerData.at(section);
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}
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else {
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return QVariant();
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}
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case Qt::ToolTipRole:
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return m_tooltipData.at(section);
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case Qt::EditRole:
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return m_headerData.at(section);
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// Display icons for "read" and "important" columns.
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case Qt::DecorationRole: {
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switch (section) {
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case MSG_DB_READ_INDEX:
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return m_readIcon;
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case MSG_DB_IMPORTANT_INDEX:
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return m_favoriteIcon;
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default:
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return QVariant();
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}
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}
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default:
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return QVariant();
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}
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}
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