/***************************************************************************
 *   copyright       : (C) 2003-2007 by Pascal Brachet                     *
 *   http://www.xm1math.net/texmaker/                                      *
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include "qjsonarray.h"
#ifdef INTERNAL_TERMINAL
#include <qtermwidget5/qtermwidget.h>
#endif

#include "configdialog.h"
#include "configmanager.h"

#include "updatechecker.h"

#include "qdocument.h"

#include "spellerutility.h"
#include "latexeditorview_config.h"
#include "smallUsefulFunctions.h"
#include "qformatconfig.h"

#include "filedialog.h"

#include <QJsonDocument>

const QString ShortcutDelegate::addRowButton = "<internal: add row>";
const QString ShortcutDelegate::deleteRowButton = "<internal: delete row>";

static const QString nameSeparator = "separator";

ShortcutComboBox::ShortcutComboBox(QWidget *parent): QComboBox(parent)
{
	const Qt::Key SpecialKeys[]  = {Qt::Key_Tab, Qt::Key_Backspace, Qt::Key_Delete};
	const int SpecialKeysCount = 3;

	setObjectName("ShortcutComboBox");
	setMaxVisibleItems(15);
	addItem(tr("<default>"));
	addItem(tr("<none>"));
	for (int k = Qt::Key_F1; k <= Qt::Key_F12; k++)
		addItem(QKeySequence(k).toString(SHORTCUT_FORMAT));
	for (int m = 0; m <= 1; m++)
		for (int c = 0; c <= 1; c++)
			for (int s = 0; s <= 1; s++)
				for (int a = 0; a <= 1; a++) {
					if (a || c || s || m) {
						for (int k = Qt::Key_F1; k <= Qt::Key_F12; k++)
							addItem(QKeySequence(c * Qt::CTRL + s * Qt::SHIFT + a * Qt::ALT + m * Qt::META + k).toString(SHORTCUT_FORMAT));
						for (int k = Qt::Key_0; k <= Qt::Key_9; k++)
							addItem(QKeySequence(c * Qt::CTRL + s * Qt::SHIFT + a * Qt::ALT + m * Qt::META + k).toString(SHORTCUT_FORMAT));
						for (int k = Qt::Key_A; k <= Qt::Key_Z; k++)
							addItem(QKeySequence(c * Qt::CTRL + s * Qt::SHIFT + a * Qt::ALT + m * Qt::META + k).toString(SHORTCUT_FORMAT));
						if (a || c) {
							for (int k = Qt::Key_Left; k <= Qt::Key_Down; k++)
								addItem(QKeySequence(c * Qt::CTRL + s * Qt::SHIFT + a * Qt::ALT + m * Qt::META + k).toString(SHORTCUT_FORMAT));
							for (int k = Qt::Key_PageUp; k <= Qt::Key_PageDown; k++)
								addItem(QKeySequence(c * Qt::CTRL + s * Qt::SHIFT + a * Qt::ALT + m * Qt::META + k).toString(SHORTCUT_FORMAT));
						}
					}
					for (int ik = 0; ik < SpecialKeysCount; ik++)
						addItem(QKeySequence(c * Qt::CTRL + s * Qt::SHIFT + a * Qt::ALT + m * Qt::META
														  + SpecialKeys[ik]).toString(SHORTCUT_FORMAT));
					//addItem(QKeySequence(c * Qt::CTRL + s * Qt::SHIFT + a * Qt::ALT + m * Qt::META + Qt::Key_Tab).toString(SHORTCUT_FORMAT));
				}
	setEditable(true);
}

void ShortcutComboBox::keyPressEvent(QKeyEvent *e)
{
	if ( (e->modifiers() != 0 && e->text() != "+" && e->key() != Qt::Key_Alt && e->key() != Qt::Key_Shift && e->key() != Qt::Key_Control && e->key() != Qt::Key_AltGr && e->key() != Qt::Key_Meta && e->key() != 0 && e->key() != Qt::Key_Super_L && e->key() != Qt::Key_Super_R)
	        || (e->key() >= Qt::Key_F1 &&  e->key() <= Qt::Key_F35)
	        || (e->key() == Qt::Key_Home)
	        || (e->key() == Qt::Key_End)
	        || (e->key() == Qt::Key_PageUp)
	        || (e->key() == Qt::Key_PageDown)
	        || (e->key() == Qt::Key_Up)
	        || (e->key() == Qt::Key_Down)
	   ) {
		// FIXME: Qt currently does not handle KeypadModifier correctly.
		// as a workaround we just take it away, so there is no difference between keypad and non-keypad keys,
		// but at least keypad keys don't produce rubbish. See also sf.net bug item 3525266
		QString newShortCut = QKeySequence((e->modifiers() | e->key()) & ~Qt::KeypadModifier).toString(SHORTCUT_FORMAT);
		int index = findText(newShortCut);
		if (index != -1) setCurrentIndex(index);
		else setEditText(newShortCut);
		return;
	}
	QComboBox::keyPressEvent(e);
}

void ShortcutComboBox::focusInEvent(QFocusEvent *e)
{
	Q_UNUSED(e)
	this->lineEdit()->selectAll();
}


ShortcutDelegate::ShortcutDelegate(QObject *parent): treeWidget(nullptr)
{
	Q_UNUSED(parent)
}

QWidget *ShortcutDelegate::createEditor(QWidget *parent,
                                        const QStyleOptionViewItem &option ,
                                        const QModelIndex &index) const
{
	Q_UNUSED(option)

    if (!index.isValid()) return nullptr;
	const QAbstractItemModel *model = index.model();
	if (model->index(index.row(), 0, index.parent()).isValid() &&
	        model->data(model->index(index.row(), 0, index.parent()), Qt::DisplayRole) == deleteRowButton) {
		//editor key replacement
        if (index.column() == 0) return nullptr;
		return new QLineEdit(parent);
	}

	//basic key
	if (isBasicEditorKey(index)) {
		if (index.column() == 0) {
			QComboBox *ops = new QComboBox(parent);
			foreach (int o, LatexEditorViewConfig::possibleEditOperations()) {
				ops->addItem(LatexEditorViewConfig::translateEditOperation(o), o);
			}
			return ops;
		}
        if (index.column() != 2) return nullptr;
		//continue as key
	}

	//menu shortcut key
	if (index.column() != 2 && index.column() != 3) {
		UtilsUi::txsWarning(tr("To change a shortcut, edit the column \"Current Shortcut\" or \"Additional Shortcut\"."));
        return nullptr;
	}
	ShortcutComboBox *editor = new ShortcutComboBox(parent);

	return editor;
}

void ShortcutDelegate::setEditorData(QWidget *editor,
                                     const QModelIndex &index) const
{
	QComboBox *box = qobject_cast<QComboBox *>(editor);
	//basic editor key
	if (box && isBasicEditorKey(index) && index.column() == 0) {
		box->setCurrentIndex(LatexEditorViewConfig::possibleEditOperations().indexOf(index.model()->data(index, Qt::UserRole).toInt()));
		return;
	}
	QString value = index.model()->data(index, Qt::EditRole).toString();
	//menu shortcut key
	if (box) {
		QString normalized = QKeySequence(value).toString(SHORTCUT_FORMAT);
		int pos = box->findText(normalized);
		if (pos == -1) box->setEditText(value);
		else box->setCurrentIndex(pos);
		if (box->lineEdit()) box->lineEdit()->selectAll();
		return;
	}
	//editor key replacement
	QLineEdit *le = qobject_cast<QLineEdit *>(editor);
	if (le) {
		le->setText(value);
	}
}

void ShortcutDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                    const QModelIndex &index) const
{
	REQUIRE(model);
	QComboBox *box = qobject_cast<QComboBox *>(editor);
	//basic editor key
	if (box && isBasicEditorKey(index) && index.column() == 0) {
		model->setData(index, box->itemData(box->currentIndex(), Qt::UserRole), Qt::UserRole);
		model->setData(index, box->itemText(box->currentIndex()), Qt::EditRole);
		model->setData(index, box->itemText(box->currentIndex()), Qt::DisplayRole);
		return;
	}
	//editor key replacement
	QLineEdit *le = qobject_cast<QLineEdit *>(editor);
	if (le) {
		if (le->text().size() != 1 && index.column() == 1) {
			UtilsUi::txsWarning(tr("Only single characters are allowed as key"));
			return;
		}
		model->setData(index, le->text(), Qt::EditRole);
		return;
	}
	//menu shortcut key
	if (index.column() != 2 && index.column() != 3) return;
	if (!box) return;
	QString value = box->currentText();
	if (value == "" || value == "none" || value == tr("<none>")) value = "";
	else if (value == "<default>") ;
	else {
		value = QKeySequence(box->currentText()).toString(SHORTCUT_FORMAT);
		if (value == "" || (value.endsWith("+") && !value.endsWith("++"))) { //Alt+wrong=>Alt+
			UtilsUi::txsWarning(ConfigDialog::tr("The shortcut you entered is invalid."));
			return;
		}
		QString value_alternative = QKeySequence(box->currentText()).toString(QKeySequence::PortableText);
        QRegularExpression rxCharKey("^(Shift\\+)?.$"); // matches all single characters and single characters with shift like "Shift+A", should not match e.g. "F1" or "DEL"
        if (value_alternative.indexOf(rxCharKey) == 0) {
			if (!UtilsUi::txsConfirmWarning(ConfigDialog::tr("The shortcut you entered is a standard character key.\n"
			                                        "You will not be able to type this character. Do you wish\n"
			                                        "to set the key anyway?"))) {
				return;
			}
		}

		/*int r=-1;
		for (int i=0;i<model->rowCount();i++)
		    if (model->data(model->index(i,2))==value) {
		        r=i;
		        break;
		        }*/
		if (treeWidget) {
			QList<QTreeWidgetItem *> li = treeWidget->findItems(value, Qt::MatchRecursive | Qt::MatchFixedString, 2);
			if (!li.empty() && li[0] && li[0]->text(0) == model->data(model->index(index.row(), 0, index.parent()))) li.removeFirst();
			QList<QTreeWidgetItem *> li2 = treeWidget->findItems(value, Qt::MatchRecursive | Qt::MatchFixedString, 3);
			if (!li2.empty() && li2[0] && li2[0]->text(0) == model->data(model->index(index.row(), 0, index.parent()))) li2.removeFirst();
			li << li2;
            // filter out elements which belong to other window i.e. pdfviewer <-> editor
            QModelIndex idx=model->index(index.row(),0,index.parent());
            QString id=idx.data(Qt::UserRole).toString();
            QStringList ids=id.split("/");
            QString progType=ids.value(0);
            for(int k=(li.size()-1);k>=0;k--){
                QTreeWidgetItem *item=li.at(k);
                QString id = item->data(0, Qt::UserRole).toString();
                QStringList ids=id.split("/");
                if(ids.value(0,"")!=progType){
                    if(progType=="pdf" || ids.value(0,"")=="pdf"){
                        li.removeAll(item);
                    }
                }
            }
			REQUIRE(treeWidget->topLevelItem(1));
			REQUIRE(treeWidget->topLevelItem(1)->childCount() >= 1);
			QTreeWidgetItem *editorKeys = treeWidget->topLevelItem(1)->child(0);
			REQUIRE(editorKeys);
			if (!li.empty() && li.first()) {
				QStringList duplicates;
				foreach (QTreeWidgetItem *twi, li) {
					if (twi) duplicates << twi->text(0);
				}
				QString duplicate = duplicates.join("\n");
				if (UtilsUi::txsConfirmWarning(QString(ConfigDialog::tr("The shortcut <%1> is already assigned to the command:")).arg(value) + "\n" + duplicate + "\n\n" + ConfigDialog::tr("Do you wish to remove the old assignment and bind the shortcut to the new command?"))) {
					//model->setData(mil[0],"",Qt::DisplayRole);
					foreach (QTreeWidgetItem *twi, li) {
						if (twi) {
							if (twi->text(2) == value) twi->setText(2, "");
                            if (twi->text(3) == value) twi->setText(3, "");
						}
					}
				} else {
					return;
				}
			}
		}
	}
	model->setData(index, value, Qt::EditRole);
}

void ShortcutDelegate ::updateEditorGeometry(QWidget *editor,
        const QStyleOptionViewItem &option, const QModelIndex &/* index */) const
{
	editor->setGeometry(option.rect);
}

void ShortcutDelegate::drawDisplay(QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect, const QString &text) const
{
	QStyle *style = QApplication::style();
	if (!style) QItemDelegate::drawDisplay(painter, option, rect, text);
	else if (text == "<internal: delete row>") {
		QStyleOptionButton sob;
		sob.text = tr("delete row");
		sob.state = QStyle::State_Enabled;
		sob.rect = rect;
		style->drawControl(QStyle::CE_PushButton, &sob, painter);
	} else if (text == "<internal: add row>") {
		QStyleOptionButton sob;
		sob.text = tr("add row");
		sob.state = QStyle::State_Enabled;
		sob.rect = rect;
		style->drawControl(QStyle::CE_PushButton, &  sob, painter);
	} else QItemDelegate::drawDisplay(painter, option, rect, text);
}

void ShortcutDelegate::treeWidgetItemClicked(QTreeWidgetItem *item, int column)
{
	Q_ASSERT(item);
	if (column != 0 || !item) return;
	/*QStyle *style = QApplication::style ();
	QPainter p(item->treeWidget ());
	QStyleOptionButton sob;
	sob.rect=item->treeWidget ()->visualItemRect(item);
	sob.state = QStyle::State_Enabled|QStyle::State_Sunken;
	if (style)
	    if (item->text(0)=="<internal: delete row>") {
	       sob.text = tr("delete row");
	       style->drawControl(QStyle::CE_PushButton, &sob, &p);
	    } else if (item->text(0)=="<internal: add row>"){
	       sob.text = tr("add row");
	       style->drawControl(QStyle::CE_PushButton, &  sob, &p);
	    }*/
	if (item->text(0) == deleteRowButton) {
		if (UtilsUi::txsConfirm(ConfigDialog::tr("Do you really want to delete this row?"))) {
			Q_ASSERT(item->parent());
			if (!item->parent()) return;
			item->parent()->removeChild(item);
		}
	} else if (item->text(0) == addRowButton) {
		REQUIRE(item->parent());
		REQUIRE(item->treeWidget());
		REQUIRE(item->treeWidget()->topLevelItem(1));
		QString newText = item->parent() == item->treeWidget()->topLevelItem(1)->child(1) ? deleteRowButton : "";
        QTreeWidgetItem *twi = new QTreeWidgetItem((QTreeWidgetItem *)nullptr, QStringList() << newText);
		twi->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsEnabled);
		item->parent()->insertChild(item->parent()->childCount() - 1, twi);
	}
}

bool ShortcutDelegate::isBasicEditorKey(const QModelIndex &index) const
{
#ifdef NO_POPPLER_PREVIEW
    const int cRow=1;
#else
    const int cRow=2;
#endif
	return index.parent().isValid() && index.parent().parent().isValid() &&
	       !index.parent().parent().parent().isValid() &&
	       index.parent().row() == 0 &&
           index.parent().parent().row() == cRow;
}


ComboBoxDelegate::ComboBoxDelegate(QObject *parent): QItemDelegate(parent)
{
	activeColumn = 2;
}
QWidget *ComboBoxDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
	if (index.column() != activeColumn)
		return QItemDelegate::createEditor(parent, option, index);
	QComboBox *editor = new QComboBox(parent);
	editor->addItems(defaultItems);
	editor->setEditable(true);

	return editor;
}

void ComboBoxDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
	if (index.column() != activeColumn) {
		QItemDelegate::setEditorData(editor, index);
		return;
	}
	QComboBox *cb = qobject_cast<QComboBox *>(editor);
	REQUIRE(cb);
	QString s = index.data(Qt::EditRole).toString();
	if (s.contains('(')) s = s.left(s.indexOf('('));
	for (int i = 0; i < cb->count(); i++)
		if (cb->itemText(i).startsWith(s)) {
			cb->setCurrentIndex(i);
			break;
		}
	cb->setEditText(index.data(Qt::EditRole).toString());
}

void ComboBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
	if (index.column() != activeColumn) {
		QItemDelegate::setModelData(editor, model, index);
		return;
	}
	QComboBox *cb = qobject_cast<QComboBox *>(editor);
	REQUIRE(cb);
	model->setData(index, cb->currentText());
}

void ComboBoxDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
	if (index.column() != activeColumn) {
		QItemDelegate::updateEditorGeometry(editor, option, index);
		return;
	}
	editor->setGeometry(option.rect);
}


int ConfigDialog::lastUsedPage = 0;

ConfigDialog::ConfigDialog(QWidget *parent): QDialog(parent,Qt::Dialog|Qt::WindowMinMaxButtonsHint|Qt::WindowCloseButtonHint), checkboxInternalPDFViewer(nullptr), riddled(false), oldToolbarIndex(-1), mBuildManager(nullptr)
{
    // adapt icon size to dpi
    double dpi=QGuiApplication::primaryScreen()->logicalDotsPerInch();
    double scale=dpi/96;
	int systemdpi = qRound(QGuiApplication::primaryScreen()->physicalDotsPerInch()); // main screen dpi
	if (systemdpi < 10 || dpi > 1000)
		systemdpi = 96;
	QString labelSystemdpi = tr("Screen Resolution (System: %1 dpi):").arg(systemdpi);

	setModal(true);
	ui.setupUi(this);

	UtilsUi::enableTouchScrolling(ui.scrollAreaGeneral);
	UtilsUi::enableTouchScrolling(ui.scrollAreaBuild);
	UtilsUi::enableTouchScrolling(ui.menuTree);
	UtilsUi::enableTouchScrolling(ui.scrollAreaAdvancedEditor);
	UtilsUi::enableTouchScrolling(ui.scrollAreaGrammar);
	UtilsUi::enableTouchScrolling(ui.scrollAreaPreview);
	UtilsUi::enableTouchScrolling(ui.scrollAreaPDFviewer);

#ifdef Q_OS_MAC
	ui.labelSwitchKeyboardLayout->setDisabled(true);
	ui.checkBoxSwitchLanguagesDirection->setChecked(false);
	ui.checkBoxSwitchLanguagesDirection->setDisabled(true);
	ui.checkBoxSwitchLanguagesMath->setChecked(false);
	ui.checkBoxSwitchLanguagesMath->setDisabled(true);
#endif

#ifdef Q_OS_WIN
	ui.checkBoxUseQSaveWrite->setVisible(false);
#endif

    //ui.checkBoxShowCommentedElementsInStructure->setVisible(false); // hide non-functional option, maybe it can be fixed in future

    ui.contentsWidget->setIconSize(QSize(qRound(32*scale), qRound(32*scale)));
	//ui.contentsWidget->setViewMode(QListView::ListMode);
	//ui.contentsWidget->setMovement(QListView::Static);

	//pageGeneral
	connect(ui.pushButtonImportDictionary, SIGNAL(clicked()), this, SLOT(importDictionary()));
	connect(ui.pushButtonUpdateCheckNow, SIGNAL(clicked()), this, SLOT(updateCheckNow()));
	connect(UpdateChecker::instance(), SIGNAL(checkCompleted()), this, SLOT(refreshLastUpdateTime()));
	refreshLastUpdateTime();

	//pageEditor
	populateComboBoxFont(false);
	connect(ui.checkBoxShowOnlyMonospacedFonts, SIGNAL(toggled(bool)), this, SLOT(populateComboBoxFont(bool)));

	QComboBox * encodingBoxes[3] = {ui.comboBoxEncoding, ui.comboBoxBibFileEncoding, ui.comboBoxLogFileEncoding};
	ui.comboBoxLogFileEncoding->addItem("Document"); //not translated so the config is language independent
	for (int i=0;i<3;i++) encodingBoxes[i]->addItem("UTF-8");
	foreach (int mib, QTextCodec::availableMibs()) {
		QTextCodec *codec = QTextCodec::codecForMib(mib);
		if (!codec) continue;
		if (codec->name() != "UTF-8") {
			for (int i=0;i<3;i++)
				encodingBoxes[i]->addItem(codec->name());
		}
	}

    ui.comboBoxThesaurusFileName->setCompleter(nullptr);

#ifdef INTERNAL_TERMINAL
	populateTerminalColorSchemes();
	populateTerminalComboBoxFont(true);
#endif

	connect(ui.pushButtonDictDir, SIGNAL(clicked()), this, SLOT(browseDictDir()));
	connect(ui.leDictDir, SIGNAL(textChanged(QString)), this, SLOT(updateDefaultDictSelection(QString)));

	connect(ui.btSelectThesaurusFileName, SIGNAL(clicked()), this, SLOT(browseThesaurus()));

	connect(ui.pushButtonPathLog, SIGNAL(clicked()), this, SLOT(browsePathLog()));
	connect(ui.pushButtonPathBib, SIGNAL(clicked()), this, SLOT(browsePathBib()));
	connect(ui.pushButtonPathImages, SIGNAL(clicked()), this, SLOT(browsePathImages()));
	connect(ui.pushButtonPathPdf, SIGNAL(clicked()), this, SLOT(browsePathPdf()));
	connect(ui.pushButtonPathCommands, SIGNAL(clicked()), this, SLOT(browsePathCommands()));

	connect(ui.comboBoxThesaurusFileName, SIGNAL(editTextChanged(QString)), this, SLOT(comboBoxWithPathEdited(QString)));
#if QT_VERSION>=QT_VERSION_CHECK(5,14,0)
    connect(ui.comboBoxThesaurusFileName, SIGNAL(textHighlighted(QString)), this, SLOT(comboBoxWithPathHighlighted(QString)));
#else
	connect(ui.comboBoxThesaurusFileName, SIGNAL(highlighted(QString)), this, SLOT(comboBoxWithPathHighlighted(QString)));
#endif


    ui.labelGetDic->setText(tr("Download additional dictionaries from %1 or %2")
            .arg("<a href=\"https://extensions.openoffice.org/de/search?f[0]=field_project_tags%3A157\">OpenOffice</a>",
                 "<a href=\"https://extensions.libreoffice.org/?Tag%5B0%5D=50&q=&Tags%5B%5D=50\">LibreOffice</a>"));
	ui.labelGetDic->setOpenExternalLinks(true);

	//pageQuick
	connect(ui.pushButtonGrammarWordlists, SIGNAL(clicked()), this, SLOT(browseGrammarWordListsDir()));
	connect(ui.pushButtonGrammarLTPath, SIGNAL(clicked()), this, SLOT(browseGrammarLTPath()));
	connect(ui.pushButtonGrammarLTJava, SIGNAL(clicked()), this, SLOT(browseGrammarLTJavaPath()));
    connect(ui.pushButtonResetLTURL, SIGNAL(clicked()), this, SLOT(resetLTURL()));
    connect(ui.pushButtonResetLTArgs, SIGNAL(clicked()), this, SLOT(resetLTArgs()));

    fmConfig = new QFormatConfig(ui.formatConfigBox, qApp->styleSheet().isEmpty());
	fmConfig->setToolTip(tr("Here the syntax highlighting for various commands, environments and selections can be changed."));
    fmConfig->addCategory(tr("Basic highlighting")) << "normal" << "background" << "comment" << "magicComment" << "commentTodo" << "keyword" << "extra-keyword" << "math-delimiter" << "math-keyword" << "math-text" << "numbers" << "text" << "align-ampersand" << "environment" << "structure" << "link" << "escapeseq" << "verbatim" << "picture" << "picture-keyword" << "preedit";
	fmConfig->addCategory(tr("LaTeX checking")) << "braceMatch" << "braceMismatch" << "latexSyntaxMistake" << "referencePresent" << "referenceMissing" << "referenceMultiple" << "citationPresent" << "citationMissing" << "packagePresent" << "packageMissing" << "temporaryCodeCompletion";
	fmConfig->addCategory(tr("Language checking")) << "spellingMistake" << "wordRepetition" << "wordRepetitionLongRange" << "badWord" << "grammarMistake" << "grammarMistakeSpecial1" << "grammarMistakeSpecial2" << "grammarMistakeSpecial3" << "grammarMistakeSpecial4";
	fmConfig->addCategory(tr("Line highlighting"))     << "line:error" << "line:warning" << "line:badbox" << "line:bookmark" << "line:bookmark0" << "line:bookmark1" << "line:bookmark2" << "line:bookmark3" << "line:bookmark4" << "line:bookmark5" << "line:bookmark6"  << "line:bookmark7" << "line:bookmark8" << "line:bookmark9" << "current";
	fmConfig->addCategory(tr("Search")) << "search" << "replacement" << "selection";
	fmConfig->addCategory(tr("Diff")) << "diffDelete" << "diffAdd" << "diffReplace";
	fmConfig->addCategory(tr("Preview")) << "previewSelection";
	fmConfig->addCategory(tr("DTX files")) << "dtx:guard" << "dtx:macro" << "dtx:verbatim" << "dtx:specialchar" << "dtx:commands";
	fmConfig->addCategory(tr("Sweave / Pweave")) << "sweave-delimiter" << "sweave-block" << "pweave-delimiter" << "pweave-block";
	fmConfig->addCategory(tr("Asymptote")) << "asymptote:block" << "asymptote:keyword" << "asymptote:type" << "asymptote:numbers" << "asymptote:string" << "asymptote:comment";
	fmConfig->addCategory(tr("Lua")) << "lua:keyword" << "lua:comment";
	fmConfig->addCategory(tr("QtScript")) << "qtscript:comment" << "qtscript:string" << "qtscript:number" << "qtscript:keyword" << "qtscript:txs-variable" << "qtscript:txs-function";

	connect(ui.spinBoxSize, SIGNAL(valueChanged(int)), fmConfig, SLOT(setBasePointSize(int)));

    connect(ui.leCompletionFilter,&QLineEdit::textChanged,this,&ConfigDialog::filterCompletionList);

	//fmConfig->setMaximumSize(490,300);
	//fmConfig->setSizePolicy(QSizePolicy::Ignored,QSizePolicy::Ignored);
	QBoxLayout *layout = new QBoxLayout(QBoxLayout::TopToBottom, ui.formatConfigBox);
#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
    layout->setMargin(0);
#else
    layout->setContentsMargins(0,0,0,0);
#endif
	layout->insertWidget(0, fmConfig);

    ConfigManager *config = dynamic_cast<ConfigManager *>(ConfigManagerInterface::getInstance());
	ui.shortcutTree->setHeaderLabels(QStringList() << tr("Command") << tr("Default Shortcut") << tr("Current Shortcut") << tr("Additional Shortcut"));
    if(config){
        ui.shortcutTree->setColumnWidth(0, config->getOption("GUI/ConfigShorcutColumnWidth",200).toInt());
    }else{
        ui.shortcutTree->setColumnWidth(0, 200);
    }

	//create icons
	createIcon(tr("General"), getRealIcon("config_general"));
	createIcon(tr("Commands"), getRealIcon("config_commands"));
	createIcon(tr("Build"), getRealIcon("config_quickbuild"));
	createIcon(tr("Shortcuts"), getRealIcon("config_shortcut"));
	createIcon(tr("Menus"), getRealIcon("config_latexmenus"), CONTENTS_ADVANCED);
	createIcon(tr("Toolbars"), getRealIcon("config_toolbars"), CONTENTS_ADVANCED);
	createIcon(tr("GUI Scaling"), getRealIcon("config_toolbars"), CONTENTS_ADVANCED);
	createIcon(tr("Editor"), getRealIcon("config_editor"));
	createIcon(tr("Adv. Editor"), getRealIcon("config_advancededitor"), CONTENTS_ADVANCED);
	createIcon(tr("Syntax Highlighting"), getRealIcon("config_highlighting"));
	createIcon(tr("Completion"), getRealIcon("config_completion"));
	createIcon(tr("Language Checking"), getRealIcon("config_editor"));
	createIcon(tr("Preview"), getRealIcon("config_preview"));
	createIcon(tr("Internal PDF Viewer"), getRealIcon("config_preview"));
    createIcon(tr("SVN/GIT"), getRealIcon("config_svn"));
	createIcon(
		tr("Internal Terminal"),
		getRealIcon("config_terminal"),
#ifdef INTERNAL_TERMINAL
		CONTENTS_ADVANCED
#else
		CONTENTS_DISABLED
#endif
	);
    // tweak all comboboxes in adv. editor pane to not change on scroll wheel as it messes with scrolling through the pane (#2977)
    tweakFocusSettings(ui.scrollAreaWidgetContents_2->children());

	Q_ASSERT(ui.pagesWidget->count() == ui.contentsWidget->count());

	connect(ui.contentsWidget,
            SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)),
            this, SLOT(changePage(QListWidgetItem*,QListWidgetItem*)));
	ui.contentsWidget->setCurrentRow(lastUsedPage);
	connect(ui.checkBoxShowAdvancedOptions, SIGNAL(toggled(bool)), this, SLOT(advancedOptionsToggled(bool)));
	connect(ui.checkBoxShowAdvancedOptions, SIGNAL(clicked(bool)), this, SLOT(advancedOptionsClicked(bool)));

	// custom toolbars
	connect(ui.comboBoxToolbars, SIGNAL(currentIndexChanged(int)), SLOT(toolbarChanged(int)));
    ui.listCustomToolBar->setIconSize(QSize(qRound(22*scale), qRound(22*scale)));
	ui.listCustomToolBar->setViewMode(QListView::ListMode);
	ui.listCustomToolBar->setMovement(QListView::Snap);
	ui.listCustomToolBar->setDragDropMode(QAbstractItemView::InternalMove);
	connect(this, SIGNAL(accepted()), SLOT(checkToolbarMoved()));
	connect(ui.pbToToolbar, SIGNAL(clicked()), this, SLOT(toToolbarClicked()));
	connect(ui.pbFromToolbar, SIGNAL(clicked()), this, SLOT(fromToolbarClicked()));
	ui.listCustomToolBar->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(ui.listCustomToolBar, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(customContextMenu(QPoint)));
	connect(ui.listCustomToolBar, SIGNAL(doubleClicked(QModelIndex)), SLOT(fromToolbarClicked()));

	connect(ui.comboBoxActions, SIGNAL(currentIndexChanged(int)), SLOT(actionsChanged(int)));
	connect(ui.treePossibleToolbarActions, SIGNAL(doubleClicked(QModelIndex)), SLOT(toToolbarClicked()));

	ui.treePossibleToolbarActions->setHeaderHidden(true);

	ui.lineEditMetaFilter->setPlaceholderText(tr("(option filter)"));
	ui.lineEditMetaFilter->setClearButtonEnabled(true);
	connect(ui.lineEditMetaFilter, SIGNAL(textChanged(QString)), SLOT(metaFilterChanged(QString)));

	ui.labelScreenResolution->setText(labelSystemdpi);

	// set-up GUI scaling
	connect(ui.tbRevertIcon, SIGNAL(clicked()), this, SLOT(revertClicked()));
	connect(ui.tbRevertCentralIcon, SIGNAL(clicked()), this, SLOT(revertClicked()));
	connect(ui.tbRevertSymbol, SIGNAL(clicked()), this, SLOT(revertClicked()));
    connect(ui.tbRevertPDF, SIGNAL(clicked()), this, SLOT(revertClicked()));

    // ai chat
    connect(ui.cbAIProvider, SIGNAL(currentIndexChanged(int)), this, SLOT(aiProviderChanged(int)));
    connect(ui.pbRetrieveModels, &QPushButton::clicked, this, &ConfigDialog::retrieveModels);
    connect(ui.pbResetAIURL, &QPushButton::clicked, this, &ConfigDialog::resetAIURL);
    // fill in the known models
    aiFillInKnownModels();

}


void ConfigDialog::showAndLimitSize() {
	show();
	QRect screen = QGuiApplication::primaryScreen()->availableGeometry();
	if (!screen.isEmpty()) {
		int nwidth = width(), nheight = height(),
			heightDiff = frameGeometry().height() - geometry().height(),
			maxHeight = screen.height() - heightDiff, maxWidth = screen.width();

		if (nwidth > maxWidth) nwidth = maxWidth;
		if (nheight > maxHeight) nheight = maxHeight;
		if (nwidth == width() && nheight == height()) return;

		resize(nwidth, nheight);
		move(frameGeometry().right() > screen.right() ? screen.left() : x(),
		   frameGeometry().bottom() > screen.bottom() ? screen.top() : y());	
	}
}

ConfigDialog::~ConfigDialog()
{
    ConfigManager *config = dynamic_cast<ConfigManager *>(ConfigManagerInterface::getInstance());
    if(config){
        config->setOption("GUI/ConfigShorcutColumnWidth",ui.shortcutTree->columnWidth(0));
    }
}

QListWidgetItem *ConfigDialog::createIcon(const QString &caption, const QIcon &icon, ContentsType contentsType)
{
	QListWidgetItem *button = new QListWidgetItem(ui.contentsWidget);
	button->setIcon(icon);
	button->setText(caption);
	button->setToolTip(caption);
	//button->setTextAlignment(Qt::AlignVCenter);
	button->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
	button->setData(Qt::UserRole, contentsType);
	if (contentsType == CONTENTS_DISABLED) {
		button->setHidden(true);
	}
	return button;
}

void ConfigDialog::changePage(QListWidgetItem *current, QListWidgetItem *previous)
{
	if (!current)
		current = previous;

	lastUsedPage = ui.contentsWidget->row(current);
	ui.pagesWidget->setCurrentIndex(lastUsedPage);
}

void ConfigDialog::revertClicked()
{
	QToolButton *bt = qobject_cast<QToolButton *>(sender());
	if (bt) {
		if (bt->objectName() == "tbRevertIcon") {
			ui.horizontalSliderIcon->setValue(24);
		}
		if (bt->objectName() == "tbRevertCentralIcon") {
			ui.horizontalSliderCentraIcon->setValue(16);
		}
		if (bt->objectName() == "tbRevertSymbol") {
			ui.horizontalSliderSymbol->setValue(32);
		}
        if (bt->objectName() == "tbRevertPDF") {
            ui.horizontalSliderPDF->setValue(16);
        }
    }
}
/*!
 * \brief adapt model list depending on ai provider
 * \param[provider] 0: mistral
 * 1: openai
 */
void ConfigDialog::aiProviderChanged(int provider)
{
    bool activateCustomURL=false;
    switch(provider){
    case 0:
        ui.cbAIPreferredModel->clear();
        ui.cbAIPreferredModel->addItem("open-mistral-7b");
        ui.cbAIPreferredModel->addItem("open-mixtral-8x7b");
        ui.cbAIPreferredModel->addItem("mistral-small-latest");
        ui.cbAIPreferredModel->addItem("mistral-medium-latest");
        ui.cbAIPreferredModel->addItem("mistral-large-latest");
        break;
    case 1:
        ui.cbAIPreferredModel->clear();
        ui.cbAIPreferredModel->addItem("gpt-4o-mini");
        ui.cbAIPreferredModel->addItem("gpt-3.5-turbo");
        ui.cbAIPreferredModel->addItem("gpt-4");
        ui.cbAIPreferredModel->addItem("gpt-4o");
        break;
    default:
        ui.cbAIPreferredModel->clear();
        activateCustomURL=true;
        break;
    }
    ui.leAIAPIURL->setEnabled(activateCustomURL);
    ui.pbResetAIURL->setEnabled(activateCustomURL);
}
/*!
 * \brief retieve the current list of available model from AI provider
 * API key is needed
 */
void ConfigDialog::retrieveModels()
{
    if(!ui.leAIAPIKey->text().isEmpty()){
        QString provider=ui.cbAIProvider->currentText();
        QString key=ui.leAIAPIKey->text();
        QString url;
        switch(ui.cbAIProvider->currentIndex()){
        case 0:
            url="https://api.mistral.ai/v1/models";
            break;
        case 1:
            url="https://api.openai.com/v1/models";
            break;
        case 2:
            url=ui.leAIAPIURL->text();
            url=url.replace("chat/completions","models");
            break;
        default:
            break;
        }
        QNetworkRequest request(url);
        request.setRawHeader("Authorization",QString("Bearer "+key).toUtf8());
        QNetworkAccessManager *manager = new QNetworkAccessManager(this);
        connect(manager,&QNetworkAccessManager::finished,this,&ConfigDialog::modelsRetrieved);
        manager->get(request);
    }
}
/*!
 * \brief reset custom ai api url to default
 */
void ConfigDialog::resetAIURL()
{
    ui.leAIAPIURL->setText("http://localhost:8080/v1/chat/completions");
}

void ConfigDialog::modelsRetrieved(QNetworkReply *reply)
{
    if(reply->error() == QNetworkReply::NoError){
        QByteArray data = reply->readAll();
        QJsonDocument doc=QJsonDocument::fromJson(data);
        QJsonObject obj=doc.object();
        QStringList models;

        QJsonArray lst=obj["data"].toArray();
        foreach (const QJsonValue & value, lst) {
            models.append(value.toObject()["id"].toString());
        }

        ui.cbAIPreferredModel->clear();
        ui.cbAIPreferredModel->addItems(models);
        if(!models.isEmpty()){
            ConfigManager *config = dynamic_cast<ConfigManager *>(ConfigManagerInterface::getInstance());
            if (config){
                config->ai_knownModels=models;
            }
        }

    }
    reply->deleteLater();
}
/*!
 * \brief fill in known models for AI provider
 */
void ConfigDialog::aiFillInKnownModels()
{
    ConfigManager *config = dynamic_cast<ConfigManager *>(ConfigManagerInterface::getInstance());
    if (!config) return;
    if(!config->ai_knownModels.isEmpty()){
        ui.cbAIPreferredModel->clear();
        ui.cbAIPreferredModel->addItems(config->ai_knownModels);
        ui.cbAIPreferredModel->setCurrentText(config->ai_preferredModel);
    }
}

//sets the items of a combobox to the filenames and sub-directory names in the directory which name
//is the current text of the combobox
void ConfigDialog::comboBoxWithPathEdited(const QString &newText)
{
	if (newText.isEmpty()) return;
	QComboBox *box = qobject_cast<QComboBox *>(sender());
	if (!box) return;
	if (box->property("lastDirInDropDown").toString() == newText && !newText.endsWith("/") && !newText.endsWith(QDir::separator())) {
		box->setEditText(newText + QDir::separator());
		box->setProperty("lastDirInDropDown", "");
		return;
	}
	QString path;
	int lastSep = qMax(newText.lastIndexOf("/"), newText.lastIndexOf(QDir::separator()));
	if ((lastSep > 0) || (newText == "") || (QDir::separator() != '/') ) path = newText.mid(0, lastSep);
	else path = "/";
	QString oldPath = box->property("dir").toString();
	if (path == oldPath) return;
	//prevent endless recursion + dir caching
	box->setProperty("dir", path);
	int curPos = box->lineEdit()->cursorPosition();
	box->clear();
	box->addItem(newText); //adding a new item in the empty list will set the edit text to it
	box->lineEdit()->setCursorPosition(curPos); // set Cursor to position before clearing

	QDir dir(path);
	QString absPath = dir.absolutePath();
	if (absPath == oldPath || (absPath + QDir::separator()) == oldPath) return;
	if (!absPath.endsWith("/") && !absPath.endsWith(QDir::separator())) absPath += QDir::separator();
	QStringList entries = dir.entryList(QStringList() << box->property("dirFilter").toString(), QDir::Files);
	foreach (const QString &file, entries)
		if (absPath + file != newText)
			box->addItem(absPath + file);
	entries = dir.entryList(QStringList(), QDir::AllDirs);
	foreach (const QString &file, entries)
		if (absPath + file != newText && file != ".")
			box->addItem(absPath + file);
}

void ConfigDialog::comboBoxWithPathHighlighted(const QString &newText)
{
	QComboBox *cb = qobject_cast<QComboBox *> (sender());
	Q_ASSERT(cb);
	if (!cb) return;
	if (!QFileInfo(newText).isDir()) {
		cb->setProperty("lastDirInDropDown", "");
		return;
	}
	cb->setProperty("lastDirInDropDown", newText);
}

void ConfigDialog::browseThesaurus()
{
	UtilsUi::browse(ui.comboBoxThesaurusFileName, tr("Select thesaurus database"), "Database (*.dat)");
}

void ConfigDialog::browseGrammarWordListsDir()
{
	UtilsUi::browse(ui.lineEditGrammarWordlists, tr("Select the grammar word lists dir"), "/");
}

void ConfigDialog::browseGrammarLTPath()
{
	UtilsUi::browse(ui.lineEditGrammarLTPath, tr("Select the LanguageTool jar"), "Java-Program (*.jar)");
}

void ConfigDialog::browseGrammarLTJavaPath()
{
	UtilsUi::browse(ui.lineEditGrammarLTJava, tr("Select java"), "Java (*)");
}

void ConfigDialog::resetLTArgs(){
    ui.lineEditGrammarLTArguments->setText("org.languagetool.server.HTTPServer -p 8081");
}

void ConfigDialog::resetLTURL(){
    ui.lineEditGrammarLTUrl->setText("http://localhost:8081/");
}

void ConfigDialog::browseDictDir()
{
	UtilsUi::browse(ui.leDictDir, tr("Select dictionary directory"), "/");
}

void ConfigDialog::browsePathLog()
{
	UtilsUi::browse(ui.lineEditPathLog, tr("Search Path for Logs"), "/", QDir::currentPath(), true);
}

void ConfigDialog::browsePathBib()
{
	UtilsUi::browse(ui.lineEditPathBib, tr("Search Path .bib Files"), "/", QDir::currentPath(), true);
}

void ConfigDialog::browsePathImages()
{
	UtilsUi::browse(ui.lineEditPathImages, tr("Search Path for Images"), "/", QDir::currentPath(), true);
}

void ConfigDialog::browsePathPdf()
{
	UtilsUi::browse(ui.lineEditPathPDF, tr("Search Path for PDFs"), "/", QDir::currentPath(), true);
}

void ConfigDialog::browsePathCommands()
{
	UtilsUi::browse(ui.lineEditPathCommands, tr("Search Path for Commands"), "/", QDir::rootPath(), true);
}

void ConfigDialog::updateDefaultDictSelection(const QString &dictPaths, const QString &newDefault)
{
	QString lang = ui.comboBoxSpellcheckLang->currentText();
	ui.comboBoxSpellcheckLang->clear();

	ConfigManager *config = dynamic_cast<ConfigManager *>(ConfigManagerInterface::getInstance());
	if (!config) return;
	SpellerManager sm;
	sm.setDictPaths(config->parseDirList(dictPaths));
	ui.comboBoxSpellcheckLang->addItems(sm.availableDicts());
	if (ui.comboBoxSpellcheckLang->count() == 0) {
		ui.comboBoxSpellcheckLang->addItem("<none>");
	}

	// update selected language
	int index = -1;
	if (!newDefault.isNull()) index = ui.comboBoxSpellcheckLang->findText(newDefault);
	if (index < 0) index = ui.comboBoxSpellcheckLang->findText(lang); // keep selected language
	if (index >= 0) {
		ui.comboBoxSpellcheckLang->setCurrentIndex(index);
	}
}

void ConfigDialog::hideShowAdvancedOptions(QWidget *w, bool on)
{
	foreach (QObject *o, w->children()) {
		QWidget *w = qobject_cast<QWidget *> (o);
		if (!w) continue;
		if (w->property("advancedOption").toBool()) {
			bool realOn = on && !w->property("hideWidget").toBool();
			w->setVisible(realOn);
		}
		// special treatment for metacommads
		static QStringList simpleMetaOptions = QStringList() << "quick" << "compile" << "view" << "view-pdf" << "bibliography";
		if (simpleMetaOptions.contains(w->objectName())) {
			QComboBox *cb = qobject_cast<QComboBox *> (o);
			if (cb) {
				if (on) {
					CommandMapping tempCommands = mBuildManager->getAllCommands();
					CommandInfo cmd = tempCommands.value(w->objectName());
					QString text = cb->currentText();
					int i = cb->findText(text);
					if (i >= 0)
						text = cmd.metaSuggestionList.value(i, tr("<unknown>"));
					cb->clear();
					cb->addItems(cmd.metaSuggestionList);
					cb->setEditable(true);
					cb->setEditText(text);
				} else {
					CommandMapping tempCommands = mBuildManager->getAllCommands();
					CommandInfo cmd = tempCommands.value(w->objectName());
					QString text = cb->currentText();
					int i = cmd.metaSuggestionList.indexOf(text);
					//if(i>=0)
					//   text=cmd.simpleDescriptionList.value(i,tr("<unknown>"));
					cb->clear();
					if (i >= 0) {
						foreach (QString elem, cmd.simpleDescriptionList) {
							elem = qApp->translate("BuildManager", qPrintable(elem));
							cb->addItem(elem);
						}
						cb->setCurrentIndex(i);
						cb->setEditable(false);
					} else {
						cb->addItems(cmd.metaSuggestionList);
						cb->setEditable(true);
						cb->setEditText(text);
					}
				}
			}
		}
		hideShowAdvancedOptions(w, on);
    }
}
/*!
 * \brief change focus and eventfilter to avoid accidental scrollen
 * See #2977
 * \param objList
 */
void ConfigDialog::tweakFocusSettings(QObjectList objList)
{
    for(auto *elem:objList){
        QComboBox *cb=qobject_cast<QComboBox *>(elem);
        if(cb){
            cb->setFocusPolicy(Qt::StrongFocus);
            cb->installEventFilter(this);
        }
        QSpinBox *sb=qobject_cast<QSpinBox *>(elem);
        if(sb){
            sb->setFocusPolicy(Qt::StrongFocus);
            sb->installEventFilter(this);
        }
        auto *gb=qobject_cast<QGroupBox *>(elem);
        if(gb){
            // look into sub-boxes
            tweakFocusSettings(gb->children());
        }
    }
}

void ConfigDialog::advancedOptionsToggled(bool on)
{
	QListWidgetItem *currentPage = ui.contentsWidget->currentItem();

	hideShowAdvancedOptions(this, on);
	ui.contentsWidget->reset();
	for (int i = 0; i < ui.contentsWidget->count(); i++) {
		ContentsType contentsType = static_cast<ContentsType>(ui.contentsWidget->item(i)->data(Qt::UserRole).toInt());
		ui.contentsWidget->item(i)->setHidden(
			((contentsType == CONTENTS_ADVANCED) && (on == false)) ||
			(contentsType == CONTENTS_DISABLED)
		);
	}

	if (currentPage && !currentPage->isHidden()) {
		currentPage->setSelected(true);
		ui.contentsWidget->setCurrentItem(currentPage);
	} else {
		ui.contentsWidget->setCurrentRow(0);
	}
}

void ConfigDialog::advancedOptionsClicked(bool on)
{
	if (on & !riddled) {
		if (!askRiddle()) ui.checkBoxShowAdvancedOptions->setChecked(false);
		else riddled = true;
	}
}

bool ConfigDialog::metaFilterRecurseWidget(const QString &filter, QWidget *widget)
{
	if (!widget) return false;
	bool showThis = widget->property("text").toString().contains(filter, Qt::CaseInsensitive)
	                || widget->property("toolTip").toString().contains(filter, Qt::CaseInsensitive)
	                || widget->property("title").toString().contains(filter, Qt::CaseInsensitive);
	if (!showThis) {
		QComboBox *comboBoxCast;
		if ((comboBoxCast = qobject_cast<QComboBox *>(widget))) {
			for (int i = 0; i < comboBoxCast->count() && !showThis; i++)
				if (comboBoxCast->itemText(i).contains(filter, Qt::CaseInsensitive))
					showThis = true;
		}
	}
	//check type, some widgets have internal widgets that freeze when they become visible
	if (qobject_cast<QGroupBox *>(widget)) showThis |= metaFilterRecurseLayout(filter, widget->layout());
	else if (qobject_cast<QScrollArea *>(widget)) showThis |= metaFilterRecurseLayout(filter, (qobject_cast<QScrollArea *>(widget))->widget()->layout());
	if (!widget->property("hideWidget").toBool())
		widget->setVisible(showThis);
	return showThis;
}

bool ConfigDialog::metaFilterRecurseLayout(const QString &filter, QLayout *layout)
{
	if (!layout) return false;
	bool showThis = false;
	QList<int> visibles;
	for (int i = 0; i < layout->count(); i++) {
		QLayoutItem *item = layout->itemAt(i);
		bool show = metaFilterRecurseWidget(filter, item->widget());
		show |= metaFilterRecurseLayout(filter, item->layout());
		showThis |= show;

		if (show && !filter.isEmpty()) visibles << i;
	}
	if (visibles.count() != layout->count()) {
		// show related widgets in the same row
		// check boxes are self-contained and have no relations
		QGridLayout *grid = qobject_cast<QGridLayout *>(layout);
		if (grid) {
			foreach (int item, visibles) {
				if (qobject_cast<QCheckBox *>(grid->itemAt(item)->widget())) continue;
				int row, col, rowSpan, colSpan;
				grid->getItemPosition(item, &row, &col, &rowSpan, &colSpan);
				for (int c = 0; c < grid->columnCount(); c++) {
					QLayoutItem *li = grid->itemAtPosition(row, c);
					if (li && li->widget()) li->widget()->setVisible(true);
				}
			}
			return showThis;
		}
		QHBoxLayout *hbox = qobject_cast<QHBoxLayout *>(layout);
		if (hbox) {
			for (int i = 0; i < hbox->count(); i++) {
				QWidget *w = hbox->itemAt(i)->widget();
				if (w)
					w->setVisible(!w->property("hideWidget").toBool());
			}
			return showThis;
		}
        QFormLayout *formLayout= qobject_cast<QFormLayout *>(layout);
        if(formLayout){
            foreach (int item, visibles) {
                QWidget *w=formLayout->itemAt(item)->widget();
                if(!qobject_cast<QLabel *>(w)){
                    w=formLayout->labelForField(w);
                    if (w){
                        w->setVisible(!w->property("hideWidget").toBool());
                    }
                }else{
                    for(int l=0;l<formLayout->rowCount();l++){
                        QLayoutItem *li=formLayout->itemAt(l,QFormLayout::FieldRole);
                        if(li){
                            QWidget *w2=li->widget();
                            if(w2 && formLayout->labelForField(w2)==w){
                                w2->setVisible(!w2->property("hideWidget").toBool());
                            }
                        }
                    }
                }
            }
        }
	}
	return showThis;
}

void ConfigDialog::metaFilterChanged(const QString &filter)
{
	QListWidgetItem *currentPage = ui.contentsWidget->currentItem();

	ui.checkBoxShowAdvancedOptions->setEnabled(filter.isEmpty());

	for (int i = 0; i < ui.pagesWidget->count(); i++) {
		QListWidgetItem *oneItem = ui.contentsWidget->item(i);
		bool shown =
			(oneItem->data(Qt::UserRole).toInt() == CONTENTS_DISABLED) ?
			false :
			metaFilterRecurseLayout(filter, ui.pagesWidget->widget(i)->layout());
		oneItem->setHidden(!shown);
	}

	// If selected page is hidden, select the next visible page.
	if (currentPage && !currentPage->isHidden()) {
		currentPage->setSelected(true);
		ui.contentsWidget->setCurrentItem(currentPage);
	} else for (int i = 0; i < ui.contentsWidget->count(); i++)
			if (!ui.contentsWidget->item(i)->isHidden()) {
				ui.contentsWidget->setCurrentRow(i);
				break;
			}
	if (filter.isEmpty()) advancedOptionsToggled(ui.checkBoxShowAdvancedOptions->isChecked());
}

void ConfigDialog::toolbarChanged(int toolbar)
{
	if (toolbar < 0 || toolbar >= customizableToolbars.size()) return;
	checkToolbarMoved();
	ui.listCustomToolBar->clear();
	foreach (const QString &actName, customizableToolbars[toolbar]) {
		QAction *act = menuParent->findChild<QAction *>(actName);
		QListWidgetItem *item;
		if (act) {
			QIcon i = act->icon().pixmap(22, 22);
			item = new QListWidgetItem(i, act->text().replace("&", ""));
		} else item = new QListWidgetItem(actName);
		item->setData(Qt::UserRole, actName);
		if (actName == nameSeparator) item->setIcon(QIcon(":/images/separator.png"));
		ui.listCustomToolBar->addItem(item);
	}
	oldToolbarIndex = toolbar;
}

void ConfigDialog::actionsChanged(int actionClass)
{
	ui.treePossibleToolbarActions->clear();
	ui.treePossibleToolbarActions->setRootIsDecorated(actionClass != 0);
	if (actionClass == 2) {
		//TODO: allow other tags, no hard coding
		QTreeWidgetItem *twi;
		twi = new QTreeWidgetItem(QStringList() << "tags/brackets/left");
		twi->setData(0, Qt::UserRole, "tags/brackets/left");
		ui.treePossibleToolbarActions->addTopLevelItem(twi);
		twi = new QTreeWidgetItem(QStringList() << "tags/brackets/right");
		twi->setData(0, Qt::UserRole, "tags/brackets/right");
		ui.treePossibleToolbarActions->addTopLevelItem(twi);
		return;
	}

	const QList<QMenu *> &menus = (actionClass == 0) ? standardToolbarMenus : allMenus;
    foreach (const QMenu *menu, menus){
        if(menu->objectName().startsWith("pdf"))
            continue; // filter out menus for pdf viewer
        populatePossibleActions(nullptr, menu, actionClass != 0);
    }
}

void ConfigDialog::toToolbarClicked()
{
	if (!ui.treePossibleToolbarActions->currentItem()) return;
	if (ui.comboBoxToolbars->currentIndex() < 0 || ui.comboBoxToolbars->currentIndex() >= customizableToolbars.size()) return;
	checkToolbarMoved();
	QTreeWidgetItem *twi = ui.treePossibleToolbarActions->currentItem();
	QString actName = twi->data(0, Qt::UserRole).toString();
	QAction *act = menuParent->findChild<QAction *>(actName);
	QListWidgetItem *item;
	if (act) item = new QListWidgetItem(twi->icon(0), act->text().replace("&", ""));
	else item = new QListWidgetItem(twi->icon(0), actName);
	item->setData(Qt::UserRole, actName);
	ui.listCustomToolBar->addItem(item);
	customizableToolbars[ui.comboBoxToolbars->currentIndex()].append(actName);
}

void ConfigDialog::fromToolbarClicked()
{
	if (!ui.listCustomToolBar->currentItem()) return;
	if (ui.comboBoxToolbars->currentIndex() < 0 || ui.comboBoxToolbars->currentIndex() >= customizableToolbars.size()) return;
	checkToolbarMoved();
	customizableToolbars[ui.comboBoxToolbars->currentIndex()].removeAt(ui.listCustomToolBar->currentRow());
	delete ui.listCustomToolBar->takeItem(ui.listCustomToolBar->currentRow());
}

void ConfigDialog::checkToolbarMoved()
{
	if (oldToolbarIndex < 0 || oldToolbarIndex >= customizableToolbars.size()) return;
	REQUIRE(ui.listCustomToolBar->count() == customizableToolbars[oldToolbarIndex].size());
	for (int i = 0; i < ui.listCustomToolBar->count(); i++)
		customizableToolbars[oldToolbarIndex][i] = ui.listCustomToolBar->item(i)->data(Qt::UserRole).toString();

}

void ConfigDialog::customContextMenu(const QPoint &p)
{
	QMenu menu;
	menu.addAction(tr("Load Other Icon"), this, SLOT(loadOtherIcon()));
	menu.addAction(tr("Insert Separator"), this, SLOT(insertSeparator()));
	menu.exec(ui.listCustomToolBar->mapToGlobal(p));
}

void ConfigDialog::loadOtherIcon()
{
	QListWidgetItem *item = ui.listCustomToolBar->currentItem();
	if (!item) {
		UtilsUi::txsWarning(tr("You need to add an action to the toolbar (from the list of actions on the right side), before you can load an icon for that item."));
		return;
	}
	QString fn = FileDialog::getOpenFileName(this, tr("Select a File"), "", tr("Images") + " (*.png *.xpm *.jpg *.jpeg *.bmp *.svg)");

	if (!fn.isEmpty()) {
		item->setIcon(QIcon(fn));
		fn = ConfigManager::getInstance()->reverseParseDir(fn);
		replacedIconsOnMenus->insert(item->data(Qt::UserRole).toString(), fn);
		ui.listCustomToolBar->reset();
		// set the same icon on other list
		//TODO QList<QListWidgetItem *>result=ui.listCustomIcons->findItems(item->text(),Qt::MatchExactly);
		//foreach(QListWidgetItem *elem,result){
		//  elem->setIcon(QIcon(fn));
		//}
	}
}

void ConfigDialog::insertSeparator()
{
	int row = ui.listCustomToolBar->currentRow();
	if (row < 0) return;
	ui.listCustomToolBar->insertItem(row, nameSeparator);
	ui.listCustomToolBar->item(row)->setData(Qt::UserRole, nameSeparator);
	ui.listCustomToolBar->item(row)->setIcon(QIcon(":/images/separator.png"));
	customizableToolbars[ui.comboBoxToolbars->currentIndex()].insert(row, nameSeparator);
}

void ConfigDialog::populatePossibleActions(QTreeWidgetItem *parent, const QMenu *menu, bool keepHierarchy)
{
	if (!menu) return;
	QList<QAction *> acts = menu->actions();
	if (keepHierarchy) {
		QTreeWidgetItem *twi = new QTreeWidgetItem(parent, QStringList() << menu->title().replace("&", ""));
		twi->setData(0, Qt::UserRole, menu->objectName());
		if (parent) parent->addChild(twi);
		else ui.treePossibleToolbarActions->addTopLevelItem(twi);
		parent = twi;
	}
	for (int i = 0; i < acts.size(); i++)
		if (acts[i]->menu()) {
			populatePossibleActions(parent, acts[i]->menu(), keepHierarchy);
		} else {
			//if(acts[i]->data().isValid()){
			QTreeWidgetItem *twi = new QTreeWidgetItem(parent, QStringList() << acts[i]->text().replace("&", ""));
			if (acts[i]->isSeparator()) {
				twi->setIcon(0, QIcon(":/images/separator.png"));
			} else {
				if (!acts[i]->icon().isNull()) twi->setIcon(0, acts[i]->icon());
				else twi->setIcon(0, QIcon(":/images/appicon.png"));
			}
			twi->setToolTip(0, acts[i]->text());
			if (acts[i]->isSeparator()) twi->setData(0, Qt::UserRole, nameSeparator);
			else twi->setData(0, Qt::UserRole, acts[i]->objectName());
			if (parent) parent->addChild(twi);
			else ui.treePossibleToolbarActions->addTopLevelItem(twi);
		}
}

void ConfigDialog::importDictionary()
{
    QString filename = FileDialog::getOpenFileName(this, tr("Import Dictionary"), QString(), tr("OpenOffice Dictionary") + " (*.oxt)", nullptr, QFileDialog::DontResolveSymlinks);
	if (filename.isNull()) return;

    ConfigManager *config = dynamic_cast<ConfigManager *>(ConfigManagerInterface::getInstance());
	if (!config) return;

	QString targetDir = config->parseDir("[txs-settings-dir]/dictionaries");
	targetDir.replace("//", "/");  // resolution of [txs-settings-dir] may lead to duplicate path separators
	SpellerManager::importDictionary(filename, targetDir);

	if (!config->parseDirList(ui.leDictDir->text()).contains(targetDir)) {
		if (UtilsUi::txsConfirm(tr("The dictionary files have been imported to\n%1.\nHowever this path is not contained in the dictionary path list. Do you want to add it?").arg(targetDir))) {
			ui.leDictDir->setText(ui.leDictDir->text() + ";[txs-settings-dir]/dictionaries");
		}
	}

	updateDefaultDictSelection(ui.leDictDir->text(), QFileInfo(filename).baseName()); // TODO: better detection for new dictionary name (.dic filename may be different from .oxt filename)
}

void ConfigDialog::updateCheckNow()
{
	UpdateChecker::instance()->check(false, ui.comboBoxUpdateLevel->currentIndex());
}

void ConfigDialog::refreshLastUpdateTime()
{
    ui.labelUpdateCheckDate->setText(UpdateChecker::lastCheckAsString());
}

void ConfigDialog::filterCompletionList(const QString &text)
{
    for(int i=0;i<ui.completeListWidget->count();++i){
        QListWidgetItem *item=ui.completeListWidget->item(i);
        bool visible=item->text().contains(text, Qt::CaseInsensitive);
        if(text.isEmpty()){
            visible=true;
        }
        item->setHidden(!visible);
    }
}

void ConfigDialog::populateComboBoxFont(bool onlyMonospaced)
{
	QString currentFont = ui.comboBoxFont->currentText();
	ui.comboBoxFont->clear();
	QFontDatabase fdb;
	if (onlyMonospaced) {
		foreach (const QString &font, fdb.families()) {
			if (fdb.isFixedPitch(font)) {
				ui.comboBoxFont->addItem(font);
			}
		}
	} else {
		ui.comboBoxFont->addItems(fdb.families());
	}
	// restore font setting if possible
	int idx = ui.comboBoxFont->findText(currentFont);
    if (idx >= 0) ui.comboBoxFont->setCurrentIndex(idx);
}
/*!
 * \brief eventFilter for combobbox
 * This filters wheel eents on unfocused combobox to avoid unwanted change on scrolling
 * See #2977
 * \param obj
 * \param event
 * \return
 */
bool ConfigDialog::eventFilter(QObject *obj, QEvent *event)
{
    if ( event->type() == QEvent::Wheel) {
        auto *wdg=qobject_cast<QWidget*>( obj );
        if( wdg && !wdg->hasFocus() )
        {
            event->ignore();
            return true;
        }
    }
    return QObject::eventFilter( obj, event );
}

#ifdef INTERNAL_TERMINAL
void ConfigDialog::populateTerminalComboBoxFont(bool onlyMonospaced)
{
	QString currentFont = ui.comboBoxTerminalFont->currentText();
	ui.comboBoxTerminalFont->clear();
	QFontDatabase fdb;
	if (onlyMonospaced) {
		foreach (const QString &font, fdb.families()) {
			if (fdb.isFixedPitch(font)) {
				ui.comboBoxTerminalFont->addItem(font);
			}
		}
	} else {
		ui.comboBoxTerminalFont->addItems(fdb.families());
	}
	// restore font setting if possible
	int idx = ui.comboBoxTerminalFont->findText(currentFont);
	if (idx >= 0) ui.comboBoxTerminalFont->setCurrentIndex(idx);

}

void ConfigDialog::populateTerminalColorSchemes()
{
	ui.comboBoxTerminalColorScheme->addItems( QTermWidget::availableColorSchemes() );
}
#endif

bool ConfigDialog::askRiddle()
{
	UtilsUi::txsInformation(tr("You have enabled the advanced options. This allows one to\n"
	                  "configure TXS in great detail. Disable the advanced\n"
	                  "options again to only view the most common settings."));
	return true;

	/*
	QString solution = QInputDialog::getText(this, tr("Riddle"), tr(
			"You come to a magic island where you meet three strange and wise friends. \n"
			"One of them is always telling the truth, another one is always lying, and the third is deaf, so he answers randomly and cannot lie(!). \n"
			"You ask the first: \"Are you lying?\", and he answers: \"No\".\n"
			"You ask the second: \"Is the first one lying?\", and he answers: \"No\".\n"
			"You ask the last: \"Is the second one lying?\", and he answers: \"No\".\n\n"
	              "Which one of the three wise will always tell the truth?"), QLineEdit::Normal, riddled?"3":"");
	if (solution.isEmpty()) return false;
	bool a1 = solution.contains("1") || solution.contains(tr("first"),Qt::CaseInsensitive) || solution.contains(tr("one"),Qt::CaseInsensitive);
	bool a2 = solution.contains("2") || solution.contains(tr("second"),Qt::CaseInsensitive) || solution.contains(tr("two"),Qt::CaseInsensitive);
	bool a3 = solution.contains("3") || solution.contains(tr("third"),Qt::CaseInsensitive) || solution.contains(tr("three"),Qt::CaseInsensitive) || solution.contains(tr("last"),Qt::CaseInsensitive);
	if (!a1 && !a2 && !a3) { QMessageBox::warning(this,tr("Riddle"),tr("Please answer 1, 2 or 3")); return false; }
	if ((a1 && a2) || (a1 && a3) || (a2 && a3)) { QMessageBox::warning(this,tr("Riddle"),tr("Only one answer allowed")); return false; }
	if (a3) return true;
	return false;
	*/
}
