/*
 * Copyright (C)  2019 ~ 2019 touwoyimuli.  All rights reserved.
 *
 * Author:  touwoyimuli <touwoyimuli@gmai.com>
 *
 * github:  https://github.com/touwoyimuli
 * blogs:   https://touwoyimuli.github.io/
 *
 * 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 <https://touwoyimuli.github.io/>.
 */
#include "ExMainWindow.h"
#include "ui_ExMainWindow.h"

ExMainWindow::ExMainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::ExMainWindow)
{
    ui->setupUi(this);
    setCentralWidget(ui->mdiArea);
    setWindowState(Qt::WindowMaximized);
    ui->toolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
}

ExMainWindow::~ExMainWindow()
{
    delete ui;
}

void ExMainWindow::closeEvent(QCloseEvent *e)
{
    ui->mdiArea->closeAllSubWindows();  //关闭所有子窗口
    e->accept();
}

void ExMainWindow::on_actOpen_triggered()
{
    bool needNew = false;

    ExMDI *mdi = nullptr;

    if (ui->mdiArea->subWindowList().count() > 0) {  //如果有打开的主窗口，获取活动窗口
        mdi =  (ExMDI *)ui->mdiArea->activeSubWindow()->widget();
        needNew = mdi->isFileOpended();   //文件已经打开，需要新建窗口
    } else {
        needNew = true;
    }

    QString curPath = QDir::currentPath();
    QString fileName = QFileDialog::getOpenFileName(this, "打开一个文件", curPath, "C程序文件(*.h *cpp);;文本文件(*.txt);;所有文件(*.*)");

    if (fileName.isEmpty())
        return;

    if (needNew) {
        mdi = new ExMDI(this);
        ui->mdiArea->addSubWindow(mdi);
    }

    mdi->loadFromFile(fileName);
    mdi->show();

    ui->actCopy->setEnabled(true);
    ui->actCut->setEnabled(true);
    ui->actPaste->setEnabled(true);
    ui->actFont->setEnabled(true);
}