linebar.cpp

/* -*- Mode: C++; indent-tabs-mode: nil; tab-width: 4 -*-
 * -*- coding: utf-8 -*-
 *
 * Copyright (C) 2011 ~ 2018 Deepin, Inc.
 *
 * Author:     Wang Yong <wangyong@deepin.com>
 * Maintainer: Rekols    <rekols@foxmail.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 3 of the License, or
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include "linebar.h"
#include <QDebug>
#include <QKeyEvent>

LineBar::LineBar(DLineEdit *parent) : DLineEdit(parent) {
  // Init.
  setClearButtonEnabled(true);

  m_autoSaveInternal = 50;
  m_autoSaveTimer = new QTimer(this);
  m_autoSaveTimer->setSingleShot(true);

  connect(m_autoSaveTimer, &QTimer::timeout, this,
          &LineBar::handleTextChangeTimer);
  connect(this, &DLineEdit::textEdited, this, &LineBar::sendText,
          Qt::QueuedConnection);
  connect(this, &DLineEdit::textChanged, this, &LineBar::handleTextChanged,
          Qt::QueuedConnection);
}

void LineBar::handleTextChangeTimer() {
  // Emit contentChanged signal.
  contentChanged();
}

void LineBar::handleTextChanged() {
  // Stop timer if new character is typed, avoid unused timer run.
  if (m_autoSaveTimer->isActive()) {
    m_autoSaveTimer->stop();
  }

  // Start new timer.
  m_autoSaveTimer->start(m_autoSaveInternal);
}

void LineBar::sendText(QString t) { emit signal_sentText(t); }

void LineBar::focusOutEvent(QFocusEvent *e) {
  // Emit focus out signal.
  focusOut();

  // Throw event out avoid DLineEdit can't hide cursor after lost focus.
  DLineEdit::focusOutEvent(e);
}

void LineBar::keyPressEvent(QKeyEvent *e) {
  auto modifiers = e->modifiers();
  if (modifiers == Qt::ControlModifier && e->text() == "\r") {
    pressCtrlEnter();
  } else if (modifiers == Qt::AltModifier && e->text() == "\r") {
    pressAltEnter();
  } else if (modifiers == Qt::MetaModifier && e->text() == "\r") {
    pressMetaEnter();
  } else if (modifiers == Qt::NoModifier && e->text() == "\r") {
    pressEnter();
  } else {
    // Pass event to DLineEdit continue, otherwise you can't type anything after
    // here. ;)
    DLineEdit::keyPressEvent(e);
  }
}