/*
 * Copyright (C) 2019 Tianjin KYLIN Information Technology Co., Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU  Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1, 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, see <http://www.gnu.org/licenses/&gt;.
 *
 */

#include "taskview_button.h"
#include <QtDBus/QDBusInterface>
#include <QtDBus/QDBusConnection>

#define ORG_UKUI_STYLE            "org.ukui.style"
#define STYLE_NAME                "styleName"
#define STYLE_NAME_KEY_DARK       "ukui-dark"
#define STYLE_NAME_KEY_DEFAULT    "ukui-default"
#define STYLE_NAME_KEY_BLACK       "ukui-black"
#define STYLE_NAME_KEY_LIGHT       "ukui-light"
#define STYLE_NAME_KEY_WHITE       "ukui-white"

TaskViewButton::TaskViewButton(IUKUIPanelPlugin *plugin,QWidget *parent):
    m_parent(parent),
    m_plugin(plugin)
{
    this->setParent(parent);
    setFocusPolicy(Qt::NoFocus);
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    this->setToolTip(tr("Show Taskview"));
    this->setStyle(new CustomStyle());
    
    const QByteArray id(ORG_UKUI_STYLE);
        QStringList stylelist;
        stylelist<<STYLE_NAME_KEY_DARK<<STYLE_NAME_KEY_BLACK;
        if (QGSettings::isSchemaInstalled(id)) {
            m_gsettings = new QGSettings(id);
            if (stylelist.contains(m_gsettings->get(STYLE_NAME).toString())) {
                this->setIcon(QIcon("/usr/share/ukui-panel/panel/img/taskview-light.svg"));
            } else {
                this->setIcon(QIcon("/usr/share/ukui-panel/panel/img/taskview-dark.svg"));
            }
        }
        connect(m_gsettings, &QGSettings::changed, this, [=] (const QString &key) {
            if (key==STYLE_NAME) {
                if (stylelist.contains(m_gsettings->get(STYLE_NAME).toString())) {
                    this->setIcon(QIcon("/usr/share/ukui-panel/panel/img/taskview-light.svg"));
                } else {
                    this->setIcon(QIcon("/usr/share/ukui-panel/panel/img/taskview-dark.svg"));
                }
            }
        });
    this->setIconSize(QSize(m_plugin->panel()->iconSize(),m_plugin->panel()->iconSize()));
    this->setContextMenuPolicy(Qt::PreventContextMenu);
}
TaskViewButton::~TaskViewButton(){
}

void TaskViewButton::realign()
{
    if (m_plugin->panel()->isHorizontal()) {
        this->setFixedSize(m_plugin->panel()->panelSize(),m_plugin->panel()->panelSize());
    } else {
        this->setFixedSize(m_plugin->panel()->panelSize(),m_plugin->panel()->panelSize());
    }
    this->setIconSize(QSize(m_plugin->panel()->iconSize(),m_plugin->panel()->iconSize()));
}

void TaskViewButton::mousePressEvent(QMouseEvent *event)
{
    const Qt::MouseButton b = event->button();
#if 0
    //调用dbus接口
    QString object = QString(getenv("DISPLAY"));
    object = object.trimmed().replace(":", "_").replace(".", "_").replace("-", "_");
    object = "/org/ukui/WindowSwitch/display/" + object;
    QDBusInterface interface("org.ukui.WindowSwitch", object,
                             "org.ukui.WindowSwitch",
                             QDBusConnection::sessionBus());
    if (!interface.isValid()) {
        qCritical() << QDBusConnection::sessionBus().lastError().message();
    }

    if (Qt::LeftButton == b  && interface.isValid())
    {
        /* Call binary display task view
         * system("ukui-window-switch --show-workspace");
         */

        /*调用远程的value方法*/
        QDBusReply<bool> reply = interface.call("handleWorkspace");
        if (reply.isValid()) {
            if (!reply.value())
                qWarning() << "Handle Workspace View Failed";
        } else {
            qCritical() << "Call Dbus method failed";
        }
    }
#endif

    //调用命令
    if (Qt::LeftButton == b){
        QDBusInterface iface("org.ukui.KWin",
                             "/WindowsView",
                             "org.ukui.KWin.WindowsView",
                             QDBusConnection::sessionBus());
        iface.call("showWindowsView");
        system("ukui-window-switch --show-workspace");
    }

    QWidget::mousePressEvent(event);
}