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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "connectionwidget.h"
#include <QAction>
#include <QHeaderView>
#include <QSqlDatabase>
#include <QTreeWidget>
#include <QVBoxLayout>
ConnectionWidget::ConnectionWidget(QWidget *parent)
: QWidget(parent)
, tree(new QTreeWidget(this))
{
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setContentsMargins({});
tree->setHeaderLabels(QStringList(tr("Database")));
tree->header()->setStretchLastSection(true);
QAction *refreshAction = new QAction(tr("Refresh"), tree);
metaDataAction = new QAction(tr("Show Schema"), tree);
connect(refreshAction, &QAction::triggered, this, &ConnectionWidget::refresh);
connect(metaDataAction, &QAction::triggered, this, &ConnectionWidget::showMetaData);
tree->addAction(refreshAction);
tree->addAction(metaDataAction);
tree->setContextMenuPolicy(Qt::ActionsContextMenu);
layout->addWidget(tree);
connect(tree, &QTreeWidget::itemActivated,
this, &ConnectionWidget::onItemActivated);
connect(tree, &QTreeWidget::currentItemChanged,
this, &ConnectionWidget::onCurrentItemChanged);
}
ConnectionWidget::~ConnectionWidget()
= default;
void ConnectionWidget::refresh()
{
const auto qDBCaption = [](const QSqlDatabase &db)
{
QString nm = db.driverName() + QLatin1Char(':');
if (!db.userName().isEmpty())
nm += db.userName() + QLatin1Char('@');
nm += db.databaseName();
return nm;
};
tree->clear();
const QStringList connectionNames = QSqlDatabase::connectionNames();
bool gotActiveDb = false;
for (const auto &connectionName : connectionNames) {
QTreeWidgetItem *root = new QTreeWidgetItem(tree);
QSqlDatabase db = QSqlDatabase::database(connectionName, false);
root->setText(0, qDBCaption(db));
if (connectionName == activeDb) {
gotActiveDb = true;
setActive(root);
}
if (db.isOpen()) {
QStringList tables = db.tables();
for (int t = 0; t < tables.count(); ++t) {
QTreeWidgetItem *table = new QTreeWidgetItem(root);
table->setText(0, tables.at(t));
}
}
}
if (!gotActiveDb) {
activeDb = connectionNames.value(0);
setActive(tree->topLevelItem(0));
}
tree->doItemsLayout(); // HACK
}
QSqlDatabase ConnectionWidget::currentDatabase() const
{
return QSqlDatabase::database(activeDb);
}
void ConnectionWidget::setActive(QTreeWidgetItem *item)
{
const auto qSetBold = [](QTreeWidgetItem *item, bool bold)
{
QFont font = item->font(0);
font.setBold(bold);
item->setFont(0, font);
};
for (int i = 0; i < tree->topLevelItemCount(); ++i) {
if (tree->topLevelItem(i)->font(0).bold())
qSetBold(tree->topLevelItem(i), false);
}
if (!item)
return;
qSetBold(item, true);
activeDb = QSqlDatabase::connectionNames().value(tree->indexOfTopLevelItem(item));
}
void ConnectionWidget::onItemActivated(QTreeWidgetItem *item)
{
if (!item)
return;
if (!item->parent()) {
setActive(item);
} else {
setActive(item->parent());
emit tableActivated(item->text(0));
}
}
void ConnectionWidget::showMetaData()
{
QTreeWidgetItem *cItem = tree->currentItem();
if (!cItem || !cItem->parent())
return;
setActive(cItem->parent());
emit metaDataRequested(cItem->text(0));
}
void ConnectionWidget::onCurrentItemChanged(QTreeWidgetItem *current)
{
metaDataAction->setEnabled(current && current->parent());
}
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