File: keytreeview.cpp

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/* Copyright 2008  Rolf Eike Beer <kde@opensource.sf-tec.de>
 *
 * 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) version 3 or any later version
 * accepted by the membership of KDE e.V. (or its successor approved
 * by the membership of KDE e.V.), which shall act as a proxy
 * defined in Section 14 of version 3 of the license.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */
#include "keytreeview.h"

#include "model/keylistproxymodel.h"
#include "model/kgpgitemmodel.h"
#include "model/kgpgitemnode.h"
#include "transactions/kgpgexport.h"
#include "transactions/kgpgimport.h"

#include <KConfigGroup>
#include <KLocalizedString>
#include <KMessageBox>
#include <KUrlMimeData>

#include <QDrag>
#include <QDragMoveEvent>
#include <QDropEvent>
#include <QHeaderView>
#include <QMimeData>

KeyTreeView::KeyTreeView(QWidget *parent, KeyListProxyModel *model)
	: QTreeView(parent), m_proxy(model)
{
	setModel(model);
	setDragEnabled(true);
	setDragDropMode(DragDrop);
	setAcceptDrops(true);
	setEditTriggers(QTreeView::NoEditTriggers);
}

std::vector<KGpgNode *>
KeyTreeView::selectedNodes(bool *psame, KgpgCore::KgpgItemType *pt) const
{
	QModelIndexList selidx = selectedIndexes();
	std::vector<KGpgNode *> ndlist;
	KgpgItemType tp = 0;
	bool sametype = true;

	if (selidx.isEmpty()) {
		if (pt != nullptr)
			*pt = tp;
		if (psame != nullptr)
			*psame = sametype;
		return ndlist;
	}

	tp = m_proxy->nodeForIndex(selidx[0])->getType();

	for (int i = 0; i < selidx.count(); i++) {
		if (selidx[i].column() != 0)
			continue;
		KGpgNode *nd = m_proxy->nodeForIndex(selidx[i]);

		if (nd->getType() != tp) {
			tp |= nd->getType();
			sametype = false;
		}

		ndlist.push_back(nd);
	}

	if (pt != nullptr)
		*pt = tp;
	if (psame != nullptr)
		*psame = sametype;
	return ndlist;
}

KGpgNode *
KeyTreeView::selectedNode() const
{
	QModelIndexList selidx = selectedIndexes();

	if (selidx.isEmpty())
		return nullptr;

	return m_proxy->nodeForIndex(selidx[0]);
}

void
KeyTreeView::selectNode(KGpgNode *nd)
{
	if (nd == nullptr)
		return;

	QModelIndex idx = m_proxy->nodeIndex(nd);

	selectionModel()->select(idx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
	selectionModel()->setCurrentIndex(idx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
}

void
KeyTreeView::restoreLayout(KConfigGroup &cg)
{
	QStringList cols(cg.readEntry("ColumnWidths", QStringList()));
	int i = 0;

	QStringList::ConstIterator it(cols.constBegin());
	const QStringList::ConstIterator itEnd(cols.constEnd());
	for (; it != itEnd; ++it)
		setColumnWidth(i++, (*it).toInt());

	while (i < model()->columnCount(QModelIndex())) {
		int width = 100;
		switch (i) {
		case KEYCOLUMN_NAME:
			width = 250;
			break;
		case KEYCOLUMN_EMAIL:
			width = 150;
			break;
		case KEYCOLUMN_TRUST:
			// the trust column needs to be only that big as the header which is done automatically
			i++;
			continue;
		}
		setColumnWidth(i, width);
		i++;
	}

	if (cg.hasKey("SortColumn")) {
		Qt::SortOrder order = cg.readEntry("SortAscending", true) ? Qt::AscendingOrder : Qt::DescendingOrder;
		sortByColumn(cg.readEntry("SortColumn", 0), order);
	}
}

void
KeyTreeView::saveLayout(KConfigGroup &cg) const
{
	QStringList widths;

	const int colCount = model()->columnCount();

	for (int i = 0; i < colCount; ++i) {
		widths << QString::number(columnWidth(i));
	}
	cg.writeEntry("ColumnWidths", widths);
        cg.writeEntry( "SortColumn", header ()->sortIndicatorSection () );
        cg.writeEntry( "SortAscending", ( header()->sortIndicatorOrder () == Qt::AscendingOrder ) );
}

void
KeyTreeView::contentsDragMoveEvent(QDragMoveEvent *e)
{
	e->setAccepted(e->mimeData()->hasUrls());
}

void
KeyTreeView::contentsDropEvent(QDropEvent *o)
{
	QList<QUrl> uriList = KUrlMimeData::urlsFromMimeData(o->mimeData());
	if (!uriList.isEmpty()) {
		if (KMessageBox::questionYesNo(this, i18n("<p>Do you want to import file <b>%1</b> into your key ring?</p>",
					uriList.first().path()), QString(), KGuiItem(i18n("Import")),
					KGuiItem(i18n("Do Not Import"))) != KMessageBox::Yes)
			return;

		emit importDrop(uriList);
	}
}

void
KeyTreeView::startDrag(Qt::DropActions supportedActions)
{
	const auto nodes = selectedNodes();

	if (nodes.empty())
		return;

	const KGpgNode * const nd = nodes.front();
	const QString keyid = nd->getId();

	if (!(nd->getType() & ITYPE_PUBLIC))
		return;

	KGpgExport *exp = new KGpgExport(this, QStringList(keyid));
	exp->start();

	int result = exp->waitForFinished();

	if (result == KGpgTransaction::TS_OK) {
		QMimeData *m = new QMimeData();
		m->setText(QString::fromLatin1( exp->getOutputData() ));
		QDrag *drag = new QDrag(this);
		drag->setMimeData(m);
		drag->exec(supportedActions, Qt::IgnoreAction);
		// do NOT delete drag.
	}

	delete exp;
}

void
KeyTreeView::resizeColumnsToContents()
{
	for (int i = m_proxy->columnCount() - 1; i >= 0; i--)
		resizeColumnToContents(i);
}

void
KeyTreeView::keyPressEvent(QKeyEvent *event)
{
	if (event->key() == Qt::Key_Return) {
		if (!event->isAutoRepeat())
			emit returnPressed();

		return;
	}
	QTreeView::keyPressEvent(event);
}

bool
KeyTreeView::isEditing() const
{
	return (state() == EditingState);
}