// vim: set tabstop=4 shiftwidth=4 noexpandtab:
/*
Gwenview: an image viewer
Copyright 2009 Aurélien Gâteau <agateau@kde.org>

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, Cambridge, MA 02110-1301, USA.

*/
// Self
#include "itemeditor.moc"

// Qt
#include <QShowEvent>

// KDE
#include <kdebug.h>
#include <kmimetype.h>

// Local

namespace Gwenview {


struct ItemEditorPrivate {
	QPoint mCenter;
};


ItemEditor::ItemEditor(QWidget* parent)
: KLineEdit(parent)
, d(new ItemEditorPrivate) {
	connect(this, SIGNAL(textChanged(QString)), SLOT(resizeToContents()));
	setTrapReturnKey(true);
}


ItemEditor::~ItemEditor() {
	delete d;
}


void ItemEditor::showEvent(QShowEvent* event) {
    // We can't do this in PreviewItemDelegate::updateEditorGeometry() because QAbstractItemView outsmarts us by calling selectAll() on the editor if it is a QLineEdit
	const QString extension = KMimeType::extractKnownExtension(text());
	if (!extension.isEmpty()) {
		// The filename contains an extension. Assure that only the filename
		// gets selected.
		const int selectionLength = text().length() - extension.length() - 1;
		setSelection(0, selectionLength);
    }
	KLineEdit::showEvent(event);
}


void ItemEditor::resizeToContents() {
	if (d->mCenter.isNull()) {
		d->mCenter = geometry().center();
	}
	int textWidth = fontMetrics().width("  " + text() + "  ");
	QRect rect = geometry();
	rect.setWidth(textWidth);
	rect.moveCenter(d->mCenter);
	if (rect.right() > parentWidget()->width()) {
		rect.setRight(parentWidget()->width());
	}
	if (rect.left() < 0) {
		rect.setLeft(0);
	}
	setGeometry(rect);

}



} // namespace
