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 /** ===========================================================
  * @file
  *
  * This file is a part of KDE project
  * <a href="https://commits.kde.org/libmediawiki">libmediawiki</a>
  *
  * @date   2011-03-22
  * @brief  a MediaWiki C++ interface for KDE
  *
  * @author Copyright (C) 2011-2013 by Gilles Caulier
  *         <a href="mailto:caulier dot gilles at gmail dot com">caulier dot gilles at gmail dot com</a>
  * @author Copyright (C) 2010 by Alexandre Mendes
  *         <a href="mailto:alex dot mendes1988 at gmail dot com">alex dot mendes1988 at gmail dot com</a>
  * @author Copyright (C) 2011 by Guillaume Hormiere
  *         <a href="mailto:hormiere dot guillaume at gmail dot com">hormiere dot guillaume at gmail dot com</a>
  *
  * 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, 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.
  *
  * ============================================================ */
 
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 
 MainWindow::MainWindow(QWidget* const parent)
     : QMainWindow(parent),
       ui(new Ui::MainWindow),
       mediawiki(nullptr)
 {
     ui->setupUi(this);
 }
 
 MainWindow::~MainWindow()
 {
     delete ui;
 }
 
 //Load page
 void MainWindow::on_pushButton2_clicked()
 {
     mediawiki = new MediaWiki(QUrl(this->ui->mWikiEdit->text()));
     QueryRevision* const queryrevision(new QueryRevision(*mediawiki));
     queryrevision->setPageName(this->ui->mPageEdit->text());
     queryrevision->setProperties(QueryRevision::Content);
     queryrevision->setExpandTemplates(true);
     queryrevision->setLimit(1);
 
     connect(queryrevision, SIGNAL(revision(QList<Revision>)),
             this, SLOT(revisionHandle(QList<Revision>)));
 
     connect(queryrevision, SIGNAL(result(KJob*)),
             this, SLOT(revisionError(KJob*)));
 
     queryrevision->start();
 }
 
 void MainWindow::revisionHandle(const QList<Revision>& revisions)
 {
     if(revisions.isEmpty())
     {
         QMessageBox popup;
         popup.setText("This page doesn't exist.");
         popup.exec();
         return;
     }
 
     this->ui->plainTextEdit->setPlainText(revisions[0].content().toUtf8());
 }
 
 //Send page
 void MainWindow::on_pushButton1_clicked()
 {
     Login* const login = new Login(*mediawiki, this->ui->mLoginEdit->text(), this->ui->mMdpEdit->text());
 
     connect(login, SIGNAL(result(KJob*)),
             this, SLOT(loginHandle(KJob*)));
 
     login->start();
 }
 
 void MainWindow::loginHandle(KJob* login)
 {
     if(login->error()!= 0)
     {
         QMessageBox popup;
         popup.setText("Wrong authentication.");
         popup.exec();
     }
     else
     {
         Edit* const job = new Edit(*mediawiki, nullptr);
         job->setPageName(this->ui->mPageEdit->text());
         job->setText(this->ui->plainTextEdit->toPlainText());
 
         connect(job, SIGNAL(result(KJob*)),
                 this, SLOT(editError(KJob*)));
 
         job->start();
     }
 }
 
 void MainWindow::editError(KJob* job)
 {
     QString errorMessage;
 
     if(job->error() == 0)
         errorMessage = "The Wiki page modified successfully.";
     else
         errorMessage = "The Wiki page can't be modified.";
 
     QMessageBox popup;
     popup.setText(errorMessage);
     popup.exec();
 }
 
 void MainWindow::revisionError(KJob* job)
 {
     if(job->error() != 0)
     {
         QMessageBox popup;
         popup.setText("The Wiki page can't be loaded.");
         popup.exec();
     }
 }
 
 void MainWindow::on_mPageEdit_textChanged(QString text)
 {
     this->ui->pushButton2->setEnabled(!text.isEmpty() && !text.isNull() && !this->ui->mWikiEdit->text().isEmpty());
 }
 
 void MainWindow::on_mWikiEdit_textChanged(QString text)
 {
     this->ui->pushButton2->setEnabled(!text.isEmpty() && !text.isNull() && !this->ui->mPageEdit->text().isEmpty());
 }
 
 void MainWindow::on_plainTextEdit_textChanged()
 {
     QString text = this->ui->plainTextEdit->toPlainText();
     this->ui->pushButton1->setEnabled(!text.isEmpty() && !text.isNull());
 }