QsciScintilla(parent),

findReplaceDialog(new FindReplaceDialog(this))

{

// This class does not set any lexer, that must be done in the child classes.

// Enable UTF8

setUtf8(true);

// Enable brace matching

setBraceMatching(QsciScintilla::SloppyBraceMatch);

// Enable auto indentation

setAutoIndent(true);

// Enable folding

setFolding(QsciScintilla::BoxedTreeFoldStyle);

// Create error indicator

errorIndicatorNumber = indicatorDefine(QsciScintilla::SquiggleIndicator);

setIndicatorForegroundColor(Qt::red, errorIndicatorNumber);

// Set a sensible scroll width, so the scroll bar is avoided in

// most cases.

setScrollWidth(80);

// Scroll width is adjusted to ensure that all of the lines

// currently displayed can be completely scrolled. This mode never

// adjusts the scroll width to be narrower.

setScrollWidthTracking(true);

// Visual flags for when wrap lines is enabled

setWrapVisualFlags(QsciScintilla::WrapFlagByBorder);

// Connect signals

connect(this, SIGNAL(linesChanged()), this, SLOT(updateLineNumberAreaWidth()));

// The shortcut is constrained to the Widget context so it does not conflict with other SqlTextEdit widgets in the Main Window.

QShortcut* shortcutFindReplace = new QShortcut(QKeySequence(tr("Ctrl+H")), this, nullptr, nullptr, Qt::WidgetShortcut);

connect(shortcutFindReplace, SIGNAL(activated()), this, SLOT(openFindReplaceDialog()));

// Prepare for adding the find/replace option to the QScintilla context menu

setContextMenuPolicy(Qt::CustomContextMenu);

connect(this, SIGNAL(customContextMenuRequested(const QPoint&)), this, SLOT(showContextMenu(const QPoint &)));

{

// Calculate number of digits of the current number of lines

int digits = std::floor(std::log10(lines())) + 1;

// Calculate the width of this number if it was all zeros (this is because a 1 might require less space than a 0 and this could

// cause some flickering depending on the font) and set the new margin width.

QFont font = lexer()->defaultFont();

setMarginWidth(0, QFontMetrics(font).width(QString("0").repeated(digits)) + 5);

{

QList<QUrl> urls = e->mimeData()->urls();

if(urls.isEmpty())

return QsciScintilla::dropEvent(e);

QString file = urls.first().toLocalFile();

if(!QFile::exists(file))

return;

QFile f(file);

f.open(QIODevice::ReadOnly);

setText(f.readAll());

f.close();

{

lexer->setColor(QColor(Settings::getValue("syntaxhighlighter", settings_name + "_colour").toString()), style);

QFont font(Settings::getValue("editor", "font").toString());

font.setPointSize(Settings::getValue("editor", "fontsize").toInt());

font.setBold(Settings::getValue("syntaxhighlighter", settings_name + "_bold").toBool());

font.setItalic(Settings::getValue("syntaxhighlighter", settings_name + "_italic").toBool());

font.setUnderline(Settings::getValue("syntaxhighlighter", settings_name + "_underline").toBool());

lexer->setFont(font, style);

{

QsciScintilla::setLexer(lexer);

// Set margins to system window theme. setLexer seems to reset these colours.

setMarginsBackgroundColor(QPalette().color(QPalette::Active, QPalette::Window));

setMarginsForegroundColor(QPalette().color(QPalette::Active, QPalette::WindowText));

setIndentationGuidesBackgroundColor(QPalette().color(QPalette::Active, QPalette::Window));

setIndentationGuidesForegroundColor(QPalette().color(QPalette::Active, QPalette::WindowText));

{

// Set lexer again to reload the updated keywords list

setLexer(lexer());

{

// Set syntax highlighting settings

QFont defaultfont(Settings::getValue("editor", "font").toString());

defaultfont.setStyleHint(QFont::TypeWriter);

defaultfont.setPointSize(Settings::getValue("editor", "fontsize").toInt());

lexer->setFont(defaultfont);

lexer->setDefaultColor(QColor(Settings::getValue("syntaxhighlighter", "foreground_colour").toString()));

lexer->setPaper(QColor(Settings::getValue("syntaxhighlighter", "background_colour").toString()));

// Set font

QFont font(Settings::getValue("editor", "font").toString());

font.setStyleHint(QFont::TypeWriter);

font.setPointSize(Settings::getValue("editor", "fontsize").toInt());

setFont(font);

// Show line numbers

QFont marginsfont(QFont(Settings::getValue("editor", "font").toString()));

marginsfont.setPointSize(font.pointSize());

setMarginsFont(marginsfont);

setMarginLineNumbers(0, true);

updateLineNumberAreaWidth();

// Highlight current line

setCaretLineVisible(true);

setCaretLineBackgroundColor(QColor(Settings::getValue("syntaxhighlighter", "currentline_colour").toString()));

setCaretForegroundColor(QColor(Settings::getValue("syntaxhighlighter", "foreground_colour").toString()));

// Set tab width

setTabWidth(Settings::getValue("editor", "tabsize").toInt());

lexer->refreshProperties();

// Set wrap lines

setWrapMode(static_cast<QsciScintilla::WrapMode>(Settings::getValue("editor", "wrap_lines").toInt()));

// Check if error indicators are enabled and clear them if they just got disabled

showErrorIndicators = Settings::getValue("editor", "error_indicators").toBool();

if(!showErrorIndicators)

clearErrorIndicators();

{

// Clear any error indicators from position (0,0) to the last column of the last line

clearIndicatorRange(0, 0, lines(), lineLength(lines()), errorIndicatorNumber);

{

// Set error indicator for the specified range but only if they're enabled

if(showErrorIndicators)

fillIndicatorRange(fromRow, fromIndex, toRow, toIndex, errorIndicatorNumber);

{

// Set error indicator for the position until end of line, but only if they're enabled

if(showErrorIndicators) {

int column = SendScintilla(QsciScintillaBase::SCI_GETCOLUMN, position);

int line = SendScintilla(QsciScintillaBase::SCI_LINEFROMPOSITION, position);

fillIndicatorRange(line, column, line+1, 0, errorIndicatorNumber);

}

// For finding the previous occurrence, we need to skip the current

// selection, otherwise we'd always found the same occurrence.

if (!forward && hasSelectedText()) {

int lineFrom, indexFrom;

int lineTo, indexTo;

getSelection(&lineFrom, &indexFrom, &lineTo, &indexTo);

setCursorPosition(lineFrom, indexFrom);

}

return findFirst(text, regexp, caseSensitive, words, wrap, forward);

{

findReplaceDialog->setExtendedScintilla(this);

findReplaceDialog->show();

{

QAction* findReplaceAction = new QAction(QIcon(":/icons/text_replace"), tr("Find and Replace..."), this);

findReplaceAction->setShortcut(QKeySequence(tr("Ctrl+H")));

connect(findReplaceAction, &QAction::triggered, [&]() {

openFindReplaceDialog();

});

// This has to be created here, otherwise the set of enabled options would not update accordingly.

QMenu* editContextMenu = createStandardContextMenu();

editContextMenu->addSeparator();

editContextMenu->addAction(findReplaceAction);

editContextMenu->exec(mapToGlobal(pos));