: QDialog(parent),

ui(new Ui::EditDialog),

currentIndex(QModelIndex()),

dataSource(TextBuffer),

dataType(Null),

isReadOnly(true)

{

ui->setupUi(this);

// Add Ctrl-Enter (Cmd-Enter on OSX) as a shortcut for the Apply button

ui->buttonApply->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Return));

QHBoxLayout* hexLayout = new QHBoxLayout(ui->editorBinary);

hexEdit = new QHexEdit(this);

hexLayout->addWidget(hexEdit);

hexEdit->setOverwriteMode(false);

QHBoxLayout* sciLayout = new QHBoxLayout(ui->editorSci);

sciEdit = new DockTextEdit(this);

sciLayout->addWidget(sciEdit);

QShortcut* ins = new QShortcut(QKeySequence(Qt::Key_Insert), this);

connect(ins, SIGNAL(activated()), this, SLOT(toggleOverwriteMode()));

connect(ui->editorText, SIGNAL(textChanged()), this, SLOT(updateApplyButton()));

connect(hexEdit, SIGNAL(dataChanged()), this, SLOT(updateApplyButton()));

connect(sciEdit, SIGNAL(textChanged()), this, SLOT(updateApplyButton()));

connect(sciEdit, SIGNAL(textChanged()), this, SLOT(editTextChanged()));

mustIndentAndCompact = Settings::getValue("databrowser", "indent_compact").toBool();

ui->buttonIndent->setChecked(mustIndentAndCompact);

reloadSettings();

{

currentIndex = QPersistentModelIndex(idx);

QByteArray data = idx.data(Qt::EditRole).toByteArray();

loadData(data);

updateCellInfo(data);

ui->buttonApply->setDisabled(true);

{

// Whenever the dialog is shown, position it at the center of the parent dialog

QMainWindow* parentDialog = qobject_cast<QMainWindow*>(parent());

if(parentDialog)

{

move(parentDialog->x() + parentDialog->width() / 2 - width() / 2,

parentDialog->y() + parentDialog->height() / 2 - height() / 2);

}

{

// We override this, to ensure the Escape key doesn't make the Edit Cell

// dock go away

return;

{

QImage img;

QString textData;

// Clear previously removed BOM

removedBom.clear();

// Determine the data type, saving that info in the class variable

dataType = checkDataType(data);

// Get the current editor mode (eg text, hex, image, json or xml mode)

int editMode = ui->comboMode->currentIndex();

// Data type specific handling

switch (dataType) {

case Null:

// Set enabled any of the text widgets

ui->editorText->setEnabled(true);

sciEdit->setEnabled(true);

switch (editMode) {

case TextEditor:

// The text widget buffer is now the main data source

dataSource = TextBuffer;

// Empty the text editor contents, then enable text editing

ui->editorText->clear();

break;

case JsonEditor:

case XmlEditor:

// The JSON widget buffer is now the main data source

dataSource = SciBuffer;

// Empty the text editor contents, then enable text editing

sciEdit->clear();

break;

case HexEditor:

// The hex widget buffer is now the main data source

dataSource = HexBuffer;

// Load the Null into the hex editor

hexEdit->setData(data);

break;

case ImageViewer:

// The hex widget buffer is now the main data source

dataSource = HexBuffer;

// Clear any image from the image viewing widget

ui->editorImage->setPixmap(QPixmap(0,0));

// Load the Null into the hex editor

hexEdit->setData(data);

break;

}

break;

case Text:

case JSON:

// Can be stored in any widget, except the ImageViewer

switch (editMode) {

case TextEditor:

setDataInBuffer(data, TextBuffer);

break;

case JsonEditor:

case XmlEditor:

setDataInBuffer(data, SciBuffer);

break;

case HexEditor:

setDataInBuffer(data, HexBuffer);

break;

case ImageViewer:

// The image viewer cannot hold data nor display text.

// Clear any image from the image viewing widget

ui->editorImage->setPixmap(QPixmap(0,0));

// Load the text into the text editor

setDataInBuffer(data, TextBuffer);

break;

}

break;

case Image:

// Image data is kept in the hex widget, mainly for safety. If we

// stored it in the editorImage widget instead, it would be a pixmap

// and there's no good way to restore that back to the original

// (pristine) image data. eg image metadata would be lost

setDataInBuffer(data, HexBuffer);

// Update the display if in text edit or image viewer mode

switch (editMode) {

case TextEditor:

// Disable text editing, and use a warning message as the contents

ui->editorText->setText(QString("<i>" %

tr("Image data can't be viewed in this mode.") % "<br/>" %

tr("Try switching to Image or Binary mode.") %

"</i>"));

ui->editorText->setEnabled(false);

break;

case XmlEditor:

case JsonEditor:

// Disable text editing, and use a warning message as the contents

sciEdit->setText(tr("Image data can't be viewed in this mode.") % '\n' %

tr("Try switching to Image or Binary mode."));

sciEdit->setEnabled(false);

break;

case ImageViewer:

// Load the image into the image viewing widget

if (img.loadFromData(data)) {

ui->editorImage->setPixmap(QPixmap::fromImage(img));

}

break;

}

break;

case SVG:

// Set the XML data in any buffer or update image in image viewer mode

switch (editMode) {

case TextEditor:

setDataInBuffer(data, TextBuffer);

break;

case JsonEditor:

case XmlEditor:

setDataInBuffer(data, SciBuffer);

break;

case HexEditor:

setDataInBuffer(data, HexBuffer);

break;

case ImageViewer:

// Set data in the XML (Sci) Buffer and load the SVG Image

setDataInBuffer(data, SciBuffer);

sciEdit->setLanguage(DockTextEdit::XML);

// Load the image into the image viewing widget

if (img.loadFromData(data)) {

ui->editorImage->setPixmap(QPixmap::fromImage(img));

}

break;

}

break;

default:

// The data seems to be general binary data, which is always loaded

// into the hex widget (the only safe place for it)

// Load the data into the hex buffer

setDataInBuffer(data, HexBuffer);

switch (editMode) {

case TextEditor:

// Disable text editing, and use a warning message as the contents

ui->editorText->setText(QString("<i>" %

tr("Binary data can't be viewed in this mode.") % "<br/>" %

tr("Try switching to Binary mode.") %

"</i>"));

ui->editorText->setEnabled(false);

break;

case JsonEditor:

case XmlEditor:

// Disable text editing, and use a warning message as the contents

sciEdit->setText(QString(tr("Binary data can't be viewed in this mode.") % '\n' %

tr("Try switching to Binary mode.")));

sciEdit->setEnabled(false);

break;

case ImageViewer:

// Clear any image from the image viewing widget

ui->editorImage->setPixmap(QPixmap(0,0));

break;

}

}

{

// Get list of supported image file formats to include them in the file dialog filter

QString image_formats;

QList<QByteArray> image_formats_list = QImageReader::supportedImageFormats();

for(int i=0;i<image_formats_list.size();++i)

image_formats.append(QString("*.%1 ").arg(QString::fromUtf8(image_formats_list.at(i))));

QString fileName = FileDialog::getOpenFileName(

this,

tr("Choose a file to import")

#ifndef Q_OS_MAC // Filters on OS X are buggy

, tr("Text files (*.txt);;Image files (%1);;JSON files (*.json);;XML files (*.xml);;Binary files (*.bin);;All files (*)").arg(image_formats)

#endif

);

if(QFile::exists(fileName))

{

QFile file(fileName);

if(file.open(QIODevice::ReadOnly))

{

QByteArray d = file.readAll();

loadData(d);

file.close();

// Update the cell data info in the bottom left of the Edit Cell

updateCellInfo(d);

}

}

{

// Images get special treatment

QString fileExt;

switch (dataType) {

case Image: {

// Determine the likely filename extension

QByteArray cellData = hexEdit->data();

QBuffer imageBuffer(&cellData);

QImageReader imageReader(&imageBuffer);

QString imageFormat = imageReader.format();

fileExt = imageFormat.toUpper() % " " % tr("Image") % "(*." % imageFormat.toLower() % ");;All files(*)";

break;

}

case Binary:

case Null:

fileExt = tr("Binary files(*.bin);;All files(*)");

break;

case Text:

fileExt = tr("Text files(*.txt);;All files(*)");

break;

case JSON:

fileExt = tr("JSON files(*.json);;All files(*)");

break;

case SVG:

fileExt = tr("SVG files(*.svg);;All files(*)");

break;

}

QString fileName = FileDialog::getSaveFileName(

this,

tr("Choose a filename to export data"),

fileExt);

if(fileName.size() > 0)

{

QFile file(fileName);

if(file.open(QIODevice::WriteOnly))

{

switch (dataSource) {

case HexBuffer:

// Data source is the hex buffer

file.write(hexEdit->data());

break;

case TextBuffer:

// Data source is the text buffer

file.write(ui->editorText->toPlainText().toUtf8());

break;

case SciBuffer:

// Data source is the Scintilla buffer

file.write(sciEdit->text().toUtf8());

break;

}

file.close();

}

}

{

ui->editorText->clear();

ui->editorImage->clear();

hexEdit->setData(QByteArray());

sciEdit->clear();

dataType = Null;

removedBom.clear();

// The text editors don't know the difference between an empty string

// and a NULL, so we need to record NULL outside of that

dataType = Null;

// Ensure the text (plain and Scintilla) editors are enabled

ui->editorText->setEnabled(true);

sciEdit->setEnabled(true);

// Update the cell data info in the bottom left of the Edit Cell

updateCellInfo(hexEdit->data());

ui->editorText->setFocus();

{

if (!isReadOnly)

ui->buttonApply->setEnabled(true);

{

QMessageBox::StandardButton reply = QMessageBox::question(

this,

tr("Invalid data for this mode"),

tr("The cell contains invalid %1 data. Reason: %2. Do you really want to apply it to the cell?").arg(dataType, errorString),

QMessageBox::Apply | QMessageBox::Cancel);

return (reply == QMessageBox::Apply);

{

if(!currentIndex.isValid())

return;

if (dataType == Null) {

emit recordTextUpdated(currentIndex, hexEdit->data(), true);

return;

}

switch (dataSource) {

case TextBuffer:

{

QString oldData = currentIndex.data(Qt::EditRole).toString();

QString newData = removedBom + ui->editorText->toPlainText();

if (oldData != newData)

// The data is different, so commit it back to the database

emit recordTextUpdated(currentIndex, removedBom + newData.toUtf8(), false);

break;

}

case SciBuffer:

switch (sciEdit->language()) {

case DockTextEdit::JSON:

{

QString oldData = currentIndex.data(Qt::EditRole).toString();

QString newData;

QJsonParseError parseError;

QJsonDocument jsonDoc = QJsonDocument::fromJson(sciEdit->text().toUtf8(), &parseError);

bool proceed;

sciEdit->clearErrorIndicators();

if (parseError.error != QJsonParseError::NoError)

sciEdit->setErrorIndicator(parseError.offset-1);

if (!jsonDoc.isNull()) {

if (mustIndentAndCompact)

// Compact the JSON data before storing

newData = QString(jsonDoc.toJson(QJsonDocument::Compact));

else

newData = sciEdit->text();

proceed = (oldData != newData);

} else {

newData = sciEdit->text();

proceed = (oldData != newData && promptInvalidData("JSON", parseError.errorString()));

}

if (proceed)

// The data is different, so commit it back to the database

emit recordTextUpdated(currentIndex, newData.toUtf8(), false);

}

break;

case DockTextEdit::XML:

{

QString oldData = currentIndex.data(Qt::EditRole).toString();

QString newData;

QDomDocument xmlDoc;

QString errorMsg;

int errorLine, errorColumn;

bool isValid = xmlDoc.setContent(sciEdit->text().toUtf8(), true, &errorMsg, &errorLine, &errorColumn);

bool proceed;

sciEdit->clearErrorIndicators();

if (!isValid) {

sciEdit->setErrorIndicator(errorLine-1, errorColumn-1, errorLine, 0);

newData = sciEdit->text();

proceed = (oldData != newData && promptInvalidData("XML", errorMsg));

} else {

if (mustIndentAndCompact)

// Compact the XML data before storing. If indent is -1, no whitespace at all is added.

newData = xmlDoc.toString(-1);

else

newData = sciEdit->text();

proceed = (oldData != newData);

}

if (proceed)

// The data is different, so commit it back to the database

emit recordTextUpdated(currentIndex, newData.toUtf8(), false);

}

break;

}

break;

case HexBuffer:

// The data source is the hex widget buffer, thus binary data

QByteArray oldData = currentIndex.data(Qt::EditRole).toByteArray();

QByteArray newData = hexEdit->data();

if (newData != oldData)

emit recordTextUpdated(currentIndex, newData, true);

break;

}

{

dataSource = source;

QString textData;

// 1) Perform validation and text formatting (if applicable).

// 2) Set the text in the corresponding editor widget (the text widget for the Image case).

// 3) Enable the widget.

switch (dataSource) {

case TextBuffer:

{

// Load the text into the text editor, remove BOM first if there is one

QByteArray dataWithoutBom = data;

removedBom = removeBom(dataWithoutBom);

textData = QString::fromUtf8(dataWithoutBom.constData(), dataWithoutBom.size());

ui->editorText->setPlainText(textData);

// Select all of the text by default (this is useful for simple text data that we usually edit as a whole)

ui->editorText->selectAll();

ui->editorText->setEnabled(true);

break;

}

case SciBuffer:

switch (sciEdit->language()) {

case DockTextEdit::JSON:

{

QJsonParseError parseError;

QJsonDocument jsonDoc = QJsonDocument::fromJson(QByteArray(data.constData(), data.size()), &parseError);

if (mustIndentAndCompact && !jsonDoc.isNull()) {

// Load indented JSON into the JSON editor

textData = QString(jsonDoc.toJson(QJsonDocument::Indented));

} else {

// Fallback case. The data is not yet valid JSON or no auto-formatting applied.

textData = QString::fromUtf8(data.constData(), data.size());

}

sciEdit->setText(textData);

sciEdit->clearErrorIndicators();

if (parseError.error != QJsonParseError::NoError)

sciEdit->setErrorIndicator(parseError.offset-1);

sciEdit->setEnabled(true);

}

break;

case DockTextEdit::XML:

{

QString errorMsg;

int errorLine, errorColumn;

QDomDocument xmlDoc;

bool isValid = xmlDoc.setContent(data, true, &errorMsg, &errorLine, &errorColumn);

if (mustIndentAndCompact && isValid) {

// Load indented XML into the XML editor

textData = xmlDoc.toString(Settings::getValue("editor", "tabsize").toInt());

} else {

// Fallback case. The data is not yet valid JSON or no auto-formatting applied.

textData = QString::fromUtf8(data.constData(), data.size());

}

sciEdit->setText(textData);

sciEdit->clearErrorIndicators();

if (!isValid)

// Adjust line and column by one (Scintilla starts at 1 and QDomDocument at 0)

sciEdit->setErrorIndicator(errorLine-1, errorColumn-1, errorLine, 0);

sciEdit->setEnabled(true);

}

break;

}

break;

case HexBuffer:

hexEdit->setData(data);

hexEdit->setEnabled(true);

break;

}

{

ui->buttonIndent->setEnabled(newMode == JsonEditor || newMode == XmlEditor);

setStackCurrentIndex(newMode);

// * If the dataSource is the text buffer, the data is always text *

switch (dataSource) {

case TextBuffer:

switch (newMode) {

case TextEditor: // Switching to the text editor

// Nothing to do, as the text is already in the text buffer

break;

case JsonEditor: // Switching to one of the Scintilla editor modes

case XmlEditor:

setDataInBuffer(ui->editorText->toPlainText().toUtf8(), SciBuffer);

break;

case HexEditor: // Switching to the hex editor

// Convert the text widget buffer for the hex widget

// The hex widget buffer is now the main data source

setDataInBuffer(removedBom + ui->editorText->toPlainText().toUtf8(), HexBuffer);

break;

case ImageViewer:

// Clear any image from the image viewing widget

ui->editorImage->setPixmap(QPixmap(0,0));

break;

}

break;

case HexBuffer:

// * If the dataSource is the hex buffer, the contents could be anything

// so we just pass it to our loadData() function to handle *

// Note that we have already set the editor, as loadData() relies on it

// being current

// Load the data into the appropriate widget, as done by loadData()

loadData(hexEdit->data());

break;

case SciBuffer:

switch (newMode) {

case TextEditor: // Switching to the text editor

// Convert the text widget buffer for the JSON widget

setDataInBuffer(sciEdit->text().toUtf8(), TextBuffer);

break;

case HexEditor: // Switching to the hex editor

// Convert the text widget buffer for the hex widget

setDataInBuffer(sciEdit->text().toUtf8(), HexBuffer);

break;

case ImageViewer:

{

// When SVG format, load the image, else clear it.

QByteArray data = sciEdit->text().toUtf8();

dataType = checkDataType(data);

if (dataType == SVG) {

QImage img;

if (img.loadFromData(data))

ui->editorImage->setPixmap(QPixmap::fromImage(img));

else

// Clear any image from the image viewing widget

ui->editorImage->setPixmap(QPixmap(0,0));

}

}

break;

case JsonEditor: // Switching to the JSON editor

case XmlEditor: // Switching to the XML editor

// The text is already in the Sci buffer but we need to perform the necessary formatting.

setDataInBuffer(sciEdit->text().toUtf8(), SciBuffer);

break;

}

}

{

if (dataSource == TextBuffer || dataSource == SciBuffer) {

// Data has been changed in the text editor, so it can't be a NULL

// any more. It hasn't been validated yet, so it cannot be JSON nor XML.

if (dataType == Null) {

dataType = Text;

ui->labelType->setText(tr("Type of data currently in cell: Text / Numeric"));

}

// Update the cell info in the bottom left manually. This is because

// updateCellInfo() only works with QByteArray's (for now)

int dataLength;

switch (dataSource) {

case TextBuffer:

dataLength = ui->editorText->toPlainText().length();

break;

case SciBuffer:

dataLength = sciEdit->text().length();

break;

}

ui->labelSize->setText(tr("%n char(s)", "", dataLength));

}

{

mustIndentAndCompact = enable;

// Indent or compact if necessary. If data has changed (button Apply indicates so), reload from the widget, else from the table.

if (ui->buttonApply->isEnabled()) {

setDataInBuffer(sciEdit->text().toUtf8(), SciBuffer);

} else

setCurrentIndex(currentIndex);

{

QByteArray cellData = data;

// Check for NULL data type

if (cellData.isNull()) {

return Null;

}

// Check if it's an image. First do a quick test by calling canRead() which only checks the first couple of bytes or so. Only if

// that returned true, do a more sophisticated test of the data. This way we get both, good performance and proper data checking.

QBuffer imageBuffer(&cellData);

QImageReader readerBuffer(&imageBuffer);

QString imageFormat = readerBuffer.format();

if(readerBuffer.canRead() && !readerBuffer.read().isNull())

return imageFormat == "svg" ? SVG : Image;

// Check if it's text only

if(isTextOnly(cellData))

{

QJsonDocument jsonDoc = QJsonDocument::fromJson(cellData);

if (!jsonDoc.isNull())

return JSON;

else

return Text;

}

// It's none of the above, so treat it as general binary data

return Binary;

{

static bool currentMode = false;

currentMode = !currentMode;

hexEdit->setOverwriteMode(currentMode);

ui->editorText->setOverwriteMode(currentMode);

sciEdit->setOverwriteMode(currentMode);

{

QDialog::setFocus();

// Set the focus to the editor widget. The idea here is that setting focus

// to the dock itself doesn't make much sense as it's just a frame; you'd

// have to tab to the editor which is what you most likely want to use. So

// in order to save the user from doing this we explicitly set the focus

// to the current editor.

int editMode = ui->editorStack->currentIndex();

switch (editMode) {

case TextEditor:

ui->editorText->setFocus();

ui->editorText->selectAll();

break;

case HexEditor:

hexEdit->setFocus();

break;

case SciEditor:

sciEdit->setFocus();

break;

case ImageViewer:

// Nothing to do

break;

}

{

isReadOnly = ro;

QPalette textEditPalette = ui->editorText->palette();

ui->buttonApply->setEnabled(!ro);

ui->buttonNull->setEnabled(!ro);

ui->buttonImport->setEnabled(!ro);

ui->editorText->setReadOnly(ro);

sciEdit->setReadOnly(ro);

hexEdit->setReadOnly(ro);

// This makes the caret being visible for selection, although the editor is read-only.

Qt::TextInteractionFlags textFlags = ro? Qt::TextSelectableByMouse | Qt::TextSelectableByKeyboard : Qt::TextEditorInteraction;

ui->editorText->setTextInteractionFlags(textFlags);

// If read-only, set the Disabled palette settings for the (in)active groups, so the user gets a hint about the text being read-only.

// This should be set also for the Scintilla widget, but it isn't working for that.

if (ro) {

textEditPalette.setColor(QPalette::Active, QPalette::Base, textEditPalette.color(QPalette::Disabled, QPalette::Base));

textEditPalette.setColor(QPalette::Inactive, QPalette::Base, textEditPalette.color(QPalette::Disabled, QPalette::Base));

textEditPalette.setColor(QPalette::Active, QPalette::Highlight, textEditPalette.color(QPalette::Disabled, QPalette::Highlight));

textEditPalette.setColor(QPalette::Inactive, QPalette::Highlight, textEditPalette.color(QPalette::Disabled, QPalette::Highlight));

textEditPalette.setColor(QPalette::Active, QPalette::HighlightedText, textEditPalette.color(QPalette::Disabled, QPalette::HighlightedText));

textEditPalette.setColor(QPalette::Inactive, QPalette::HighlightedText, textEditPalette.color(QPalette::Disabled, QPalette::HighlightedText));

ui->editorText->setPalette(textEditPalette);

} else {

// Restore default palette

ui->editorText->setPalette(QPalette());

}

{

QByteArray cellData = data;

// Image data needs special treatment

if (dataType == Image || dataType == SVG) {

QBuffer imageBuffer(&cellData);

QImageReader imageReader(&imageBuffer);

// Display the image format

QString imageFormat = imageReader.format();

ui->labelType->setText(tr("Type of data currently in cell: %1 Image").arg(imageFormat.toUpper()));

// Display the image dimensions and size

QSize imageDimensions = imageReader.size();

int imageSize = cellData.size();

QString labelSizeText = tr("%1x%2 pixel(s)").arg(imageDimensions.width()).arg(imageDimensions.height()) + ", " + humanReadableSize(imageSize);

ui->labelSize->setText(labelSizeText);

return;

}

// Use a switch statement for the other data types to keep things neat :)

switch (dataType) {

case Null:

// NULL data type

ui->labelType->setText(tr("Type of data currently in cell: NULL"));

ui->labelSize->setText(tr("%n byte(s)", "", 0));

break;

case Text: {

// Text only

// Determine the length of the cell text in characters (possibly different to number of bytes).

int textLength = QString(cellData).length();

ui->labelType->setText(tr("Type of data currently in cell: Text / Numeric"));

ui->labelSize->setText(tr("%n char(s)", "", textLength));

break;

}

case JSON: {

// Valid JSON

// Determine the length of the cell text in characters (possibly different to number of bytes).

int jsonLength = QString(cellData).length();

ui->labelType->setText(tr("Type of data currently in cell: Valid JSON"));

ui->labelSize->setText(tr("%n char(s)", "", jsonLength));

break;

}

default:

// Determine the length of the cell data

int dataLength = cellData.length();

// If none of the above data types, consider it general binary data

ui->labelType->setText(tr("Type of data currently in cell: Binary"));

ui->labelSize->setText(tr("%n byte(s)", "", dataLength));

break;

}

{

QStringList units;

units << "" << "Ki" << "Mi" << "Gi" << "Ti" << "Pi" << "Ei" << "Zi";

for(const QString& unit : units)

{

if(fabs(byteCount) < 1024.0)

{

QString size = QString::number(byteCount, 'f', 2);

return size + " " + unit + "B";

}

byteCount /= 1024.0;

}

QString yiUnit = "Yi";

QString size = QString::number(byteCount, 'f', 2);

return size + " " + yiUnit + "B";

{

// Set the databrowser font for the text editor but the (SQL) editor

// font for hex editor, since it needs a Monospace font and the

// databrowser font would be usually of variable width.

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

textFont.setPointSize(Settings::getValue("databrowser", "fontsize").toInt());

ui->editorText->setFont(textFont);

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

hexFont.setPointSize(Settings::getValue("databrowser", "fontsize").toInt());

hexEdit->setFont(hexFont);

sciEdit->reloadSettings();

{

switch (editMode) {

case TextEditor:

case HexEditor:

case ImageViewer:

// General case: switch to the selected editor

ui->editorStack->setCurrentIndex(editMode);

break;

case JsonEditor:

// Scintilla case: switch to the single Scintilla editor and set language

ui->editorStack->setCurrentIndex(SciEditor);

sciEdit->setLanguage(DockTextEdit::JSON);

break;

case XmlEditor:

// Scintilla case: switch to the single Scintilla editor and set language

ui->editorStack->setCurrentIndex(SciEditor);

sciEdit->setLanguage(DockTextEdit::XML);

break;

}