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/***************************************************************************
* Copyright (C) 2011 by Tirtha Chatterjee <[email protected]> *
* *
* Based on the Itemviews NG project from Trolltech Labs: *
* http://qt.gitorious.org/qt-labs/itemviews-ng *
* *
* 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 "kitemlistkeyboardsearchmanager_p.h"
#include <QApplication>
#include <QElapsedTimer>
#include <KDebug>
KItemListKeyboardSearchManager::KItemListKeyboardSearchManager(QObject* parent) :
QObject(parent)
{
m_keyboardInputTime.invalidate();
}
KItemListKeyboardSearchManager::~KItemListKeyboardSearchManager()
{
}
void KItemListKeyboardSearchManager::addKeys(const QString& keys)
{
const bool keyboardTimeWasValid = m_keyboardInputTime.isValid();
const qint64 keyboardInputTimeElapsed = m_keyboardInputTime.restart();
if (keyboardInputTimeElapsed > QApplication::keyboardInputInterval()
|| !keyboardTimeWasValid || keys.isEmpty()) {
m_searchedString.clear();
}
const bool newSearch = m_searchedString.isEmpty();
if (!keys.isEmpty()) {
m_searchedString.append(keys);
// Special case:
// If the same key is pressed repeatedly, the next item matching that key should be highlighted
const QChar firstKey = m_searchedString.length() > 0 ? m_searchedString.at(0) : QChar();
const bool sameKey = m_searchedString.length() > 1 && m_searchedString.count(firstKey) == m_searchedString.length();
// Searching for a matching item should start from the next item if either
// 1. a new search is started, or
// 2. a 'repeated key' search is done.
const bool searchFromNextItem = newSearch || sameKey;
emit changeCurrentItem(sameKey ? firstKey : m_searchedString, searchFromNextItem);
}
m_keyboardInputTime.start();
}
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