File indexing completed on 2024-05-12 17:16:02

 /***************************************************************************
  *   Copyright (C) 2007 by Rajko Albrecht                                  *
  *   ral@alwins-world.de                                                   *
  *                                                                         *
  *   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 "diffbrowser.h"
 #include "diffsyntax.h"
 #include "settings/kdesvnsettings.h"
 
 #include <QFileDialog>
 #include <KMessageBox>
 #include <KLocalizedString>
 #include <KStandardGuiItem>
 #include <KFind>
 #include <KFindDialog>
 
 #include <QApplication>
 #include <QFontDatabase>
 #include <QKeyEvent>
 #include <QTextCodec>
 
 /*!
     \fn DiffBrowser::DiffBrowser(QWidget*parent=0)
  */
 DiffBrowser::DiffBrowser(QWidget *parent)
     : QTextBrowser(parent)
     , m_srchdialog(nullptr)
 {
 //     setTextFormat(Qt::PlainText);
     setLineWrapMode(QTextEdit::NoWrap);
     setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
 
     setLineWrapMode(QTextEdit::NoWrap);
     m_Syntax = new DiffSyntax(document());
     setToolTip(i18n("Ctrl-F for search, F3 or Shift-F3 for search again."));
     setWhatsThis(i18n("<b>Display differences between files</b><p>You may search inside text with Ctrl-F.</p><p>F3 for search forward again, Shift-F3 for search backward again.</p><p>You may save the (original) output with Ctrl-S.</p>"));
     setFocus();
 }
 
 /*!
     \fn DiffBrowser::~DiffBrowser()
  */
 DiffBrowser::~DiffBrowser()
 {
     delete m_Syntax;
     delete m_srchdialog;
 }
 
 void DiffBrowser::setText(const QByteArray &aText)
 {
     m_content = aText;
     printContent();
     moveCursor(QTextCursor::Start);
 }
 
 void DiffBrowser::printContent()
 {
     QTextCodec *cc = QTextCodec::codecForName(Kdesvnsettings::locale_for_diff().toUtf8());
     if (!cc) {
         QTextBrowser::setText(QString::fromLocal8Bit(m_content));
     } else {
         QTextBrowser::setText(cc->toUnicode(m_content));
     }
 }
 
 /*!
     \fn DiffBrowser::saveDiff()
  */
 void DiffBrowser::saveDiff()
 {
     QString saveTo = QFileDialog::getSaveFileName(this, i18n("Save diff"), QString(), i18n("Patch file (*.diff *.patch)"));
     if (saveTo.isEmpty()) {
         return;
     }
     QFile tfile(saveTo);
     if (tfile.exists()) {
         if (KMessageBox::warningYesNo(QApplication::activeModalWidget(),
                                       i18n("File %1 exists - overwrite?", saveTo))
                 != KMessageBox::Yes) {
             return;
         }
     }
     tfile.open(QIODevice::Truncate | QIODevice::WriteOnly | QIODevice::Unbuffered);
     tfile.write(m_content);
 }
 
 void DiffBrowser::keyPressEvent(QKeyEvent *ev)
 {
     if (ev->key() == Qt::Key_Return) {
         ev->ignore();
         return;
     }
     if (ev->key() == Qt::Key_F3) {
         if (ev->modifiers() == Qt::ShiftModifier) {
             searchagainback_slot();
         } else {
             searchagain_slot();
         }
     } else if (ev->key() == Qt::Key_F && ev->modifiers() == Qt::ControlModifier) {
         startSearch();
     } else if (ev->key() == Qt::Key_S && ev->modifiers() == Qt::ControlModifier) {
         saveDiff();
     } else {
         QTextBrowser::keyPressEvent(ev);
     }
 }
 
 void DiffBrowser::startSearch()
 {
     if (!m_srchdialog) {
         m_srchdialog = new KFindDialog(this);
         m_srchdialog->setSupportsWholeWordsFind(true);
         m_srchdialog->setHasCursor(false);
         m_srchdialog->setHasSelection(false);
         m_srchdialog->setSupportsRegularExpressionFind(false);
         connect(m_srchdialog, &KFindDialog::okClicked, this, &DiffBrowser::search_slot);
     }
     QString _st = m_srchdialog->pattern();
     m_srchdialog->setPattern(_st.isEmpty() ? m_pattern : _st);
     m_srchdialog->show();
 }
 
 /*!
     \fn DiffBrowser::search_slot()
  */
 void DiffBrowser::search_slot()
 {
     if (!m_srchdialog) {
         return;
     }
     doSearch(m_srchdialog->pattern(),
              (m_srchdialog->options() & KFind::FindBackwards) == KFind::FindBackwards);
 }
 
 void DiffBrowser::doSearch(const QString &to_find_string, bool back)
 {
     if (!m_srchdialog) {
         return;
     }
     while (true) {
         bool result;
         QTextDocument::FindFlags f;
         if (back) {
             f = QTextDocument::FindBackward;
         }
         if (m_srchdialog->options()&KFind::WholeWordsOnly) {
             f |= QTextDocument::FindWholeWords;
         }
         if (m_srchdialog->options()&KFind::CaseSensitive) {
             f |= QTextDocument::FindCaseSensitively;
         }
 
         result = find(to_find_string, f);
 
         if (result) {
             m_pattern = to_find_string;
             break;
         }
         QWidget *_parent = m_srchdialog->isVisible() ? m_srchdialog : parentWidget();
         if (!back) {
             KMessageBox::ButtonCode query = KMessageBox::questionYesNo(_parent,
                                                                        i18n("End of document reached.\n"\
                                                                             "Continue from the beginning?"),
                                                                        i18n("Find"),
                                                                        KStandardGuiItem::yes(),
                                                                        KStandardGuiItem::no());
             if (query == KMessageBox::Yes) {
                 moveCursor(QTextCursor::Start);
             } else {
                 break;
             }
         } else {
             int query = KMessageBox::questionYesNo(
                             _parent,
                             i18n("Beginning of document reached.\n"\
                                  "Continue from the end?"),
                             i18n("Find"),
                             KStandardGuiItem::yes(),
                             KStandardGuiItem::no());
             if (query == KMessageBox::Yes) {
                 moveCursor(QTextCursor::End);
             } else {
                 break;
             }
         }
     }
 }
 
 void DiffBrowser::searchagain_slot()
 {
     doSearchAgain(false);
 }
 
 void DiffBrowser::searchagainback_slot()
 {
     doSearchAgain(true);
 }
 
 void DiffBrowser::doSearchAgain(bool back)
 {
     if (!m_srchdialog || m_pattern.isEmpty()) {
         startSearch();
     } else {
         doSearch(m_pattern, back);
     }
 }
 
 void DiffBrowser::slotTextCodecChanged(const QString &codec)
 {
     if (Kdesvnsettings::locale_for_diff() != codec) {
         Kdesvnsettings::setLocale_for_diff(codec);
         printContent();
         Kdesvnsettings::self()->save();
     }
 }