kde-workspace/krunner/interfaces/default/krunnerhistorycombobox.cpp
2015-02-27 09:28:46 +00:00

130 lines
4.7 KiB
C++

/***************************************************************************
* Copyright 2009 by Jacopo De Simoi <wilderkde@gmail.com> *
* *
* 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, Boston, MA 02110-1301 USA . *
***************************************************************************/
#include "krunnerhistorycombobox.h"
#include <QApplication>
#include <QTimer>
#include <KDebug>
#include <KLineEdit>
#include <KStandardShortcut>
KrunnerHistoryComboBox::KrunnerHistoryComboBox(bool useCompletion, QWidget * parent)
: KHistoryComboBox(useCompletion, parent),
m_addingToHistory(false)
{
setPalette(QApplication::palette());
setDuplicatesEnabled(false);
setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLengthWithIcon);
// in theory, the widget should detect the direction from the content
// but this is not available in Qt4.4/KDE 4.2, so the best default for this widget
// is LTR: as it's more or less a "command line interface"
// FIXME remove this code when KLineEdit has automatic direction detection of the "paragraph"
setLayoutDirection(Qt::LeftToRight);
}
KrunnerHistoryComboBox::~KrunnerHistoryComboBox()
{
}
void KrunnerHistoryComboBox::addToHistory(const QString & item)
{
m_addingToHistory = true;
KHistoryComboBox::addToHistory(item);
m_addingToHistory = false;
}
void KrunnerHistoryComboBox::setLineEdit(QLineEdit *e)
{
if (lineEdit()) {
disconnect(lineEdit(), 0, this, 0);
}
KComboBox::setLineEdit(e);
QTimer::singleShot(50, this, SLOT(connectLineEdit()));
}
void KrunnerHistoryComboBox::connectLineEdit()
{
disconnect(this, SIGNAL(currentIndexChanged(QString)), this, SLOT(currentIndexChanged(QString)));
connect(this, SIGNAL(currentIndexChanged(QString)), this, SLOT(currentIndexChanged(QString)));
if (lineEdit()) {
disconnect(lineEdit(), SIGNAL(textEdited(QString)), this, SIGNAL(queryTextEdited(QString)));
connect(lineEdit(), SIGNAL(textEdited(QString)), this, SIGNAL(queryTextEdited(QString)));
}
}
void KrunnerHistoryComboBox::focusOutEvent(QFocusEvent *e)
{
discardCompletion();
KHistoryComboBox::focusOutEvent(e);
}
void KrunnerHistoryComboBox::wheelEvent(QWheelEvent *e)
{
KHistoryComboBox::wheelEvent(e);
emit queryTextEdited(lineEdit()->text());
}
void KrunnerHistoryComboBox::keyPressEvent(QKeyEvent *e)
{
if (e->key() == Qt::Key_Return || e->key() == Qt::Key_Enter) {
discardCompletion();
emit returnPressed();
} else {
KHistoryComboBox::keyPressEvent(e);
}
int event_key = e->key() | e->modifiers();
if (KStandardShortcut::rotateUp().contains(event_key) ||
KStandardShortcut::rotateDown().contains(event_key)) {
emit queryTextEdited(lineEdit()->text());
}
}
void KrunnerHistoryComboBox::discardCompletion()
{
//FIXME: find a reliable way to see if the scene is empty; now defaults to
// never complete
bool emptyScene = false;
KLineEdit* edit = static_cast<KLineEdit*>(lineEdit());
bool suggestedCompletion = (edit->text() != edit->userText());
if (emptyScene && suggestedCompletion) {
// We hit TAB with an empty scene and a suggested completion:
// Complete but don't lose focus
edit->setText(edit->text());
} else if (suggestedCompletion) {
// We hit TAB with a non-empty scene and a suggested completion:
// Assume the user wants to switch input to the results scene and discard the completion
edit->setText(edit->userText());
}
}
void KrunnerHistoryComboBox::currentIndexChanged(const QString &item)
{
if (!m_addingToHistory) {
emit queryTextEdited(item);
}
}
#include "moc_krunnerhistorycombobox.cpp"