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Diffstat (limited to 'demos/sqlbrowser/connectionwidget.cpp')
| -rw-r--r-- | demos/sqlbrowser/connectionwidget.cpp | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/demos/sqlbrowser/connectionwidget.cpp b/demos/sqlbrowser/connectionwidget.cpp new file mode 100644 index 0000000000..7df28ac409 --- /dev/null +++ b/demos/sqlbrowser/connectionwidget.cpp @@ -0,0 +1,165 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the demonstration applications of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "connectionwidget.h" + +#include <QtGui> +#include <QtSql> + +ConnectionWidget::ConnectionWidget(QWidget *parent) + : QWidget(parent) +{ + QVBoxLayout *layout = new QVBoxLayout(this); + tree = new QTreeWidget(this); + tree->setObjectName(QLatin1String("tree")); + tree->setHeaderLabels(QStringList(tr("database"))); + tree->header()->setResizeMode(QHeaderView::Stretch); + QAction *refreshAction = new QAction(tr("Refresh"), tree); + metaDataAction = new QAction(tr("Show Schema"), tree); + connect(refreshAction, SIGNAL(triggered()), SLOT(refresh())); + connect(metaDataAction, SIGNAL(triggered()), SLOT(showMetaData())); + tree->addAction(refreshAction); + tree->addAction(metaDataAction); + tree->setContextMenuPolicy(Qt::ActionsContextMenu); + + layout->addWidget(tree); + + QMetaObject::connectSlotsByName(this); +} + +ConnectionWidget::~ConnectionWidget() +{ +} + +static QString qDBCaption(const QSqlDatabase &db) +{ + QString nm = db.driverName(); + nm.append(QLatin1Char(':')); + if (!db.userName().isEmpty()) + nm.append(db.userName()).append(QLatin1Char('@')); + nm.append(db.databaseName()); + return nm; +} + +void ConnectionWidget::refresh() +{ + tree->clear(); + QStringList connectionNames = QSqlDatabase::connectionNames(); + + bool gotActiveDb = false; + for (int i = 0; i < connectionNames.count(); ++i) { + QTreeWidgetItem *root = new QTreeWidgetItem(tree); + QSqlDatabase db = QSqlDatabase::database(connectionNames.at(i), false); + root->setText(0, qDBCaption(db)); + if (connectionNames.at(i) == 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); +} + +static void qSetBold(QTreeWidgetItem *item, bool bold) +{ + QFont font = item->font(0); + font.setBold(bold); + item->setFont(0, font); +} + +void ConnectionWidget::setActive(QTreeWidgetItem *item) +{ + 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::on_tree_itemActivated(QTreeWidgetItem *item, int /* column */) +{ + + 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::on_tree_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *) +{ + metaDataAction->setEnabled(current && current->parent()); +} + |