#include "EditDialog.h"

#include "ui_EditDialog.h"

#include "sqlitedb.h"

#include "Settings.h"

#include "src/qhexedit.h"

#include "FileDialog.h"

#include <QMainWindow>

#include <QKeySequence>

#include <QShortcut>

#include <QImageReader>

#include <QBuffer>

//#include <QStringBuilder>

#include <QModelIndex>

EditDialog::EditDialog(QWidget* parent)

: QDialog(parent),

ui(new Ui::EditDialog),

currentIndex(QModelIndex()),

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);

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

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

// Set the font for the text and hex editors

QFont editorFont(Settings::getSettingsValue("databrowser", "font").toString());

editorFont.setPointSize(Settings::getSettingsValue("databrowser", "fontsize").toInt());

ui->editorText->setFont(editorFont);

hexEdit->setFont(editorFont);

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

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

}

EditDialog::~EditDialog()

{

delete ui;

}

void EditDialog::setCurrentIndex(const QModelIndex& idx)

{

currentIndex = QPersistentModelIndex(idx);

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

loadData(data);

updateCellInfo(data);

ui->buttonApply->setDisabled(true);

}

void EditDialog::showEvent(QShowEvent*)

{

// 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);

}

}

void EditDialog::reject()

{

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

// dock go away

return;

}

// Loads data from a cell into the Edit Cell window

void EditDialog::loadData(const QByteArray& data)

{

QImage img;

QString textData;

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

dataType = checkDataType(data);

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

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

// Data type specific handling

switch (dataType) {

case Null:

switch (editMode) {

case TextEditor:

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

ui->editorText->clear();

ui->editorText->setEnabled(true);

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

dataSource = TextBuffer;

break;

case HexEditor:

// Load the Null into the hex editor

hexEdit->setData(data);

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

dataSource = HexBuffer;

break;

case ImageViewer:

// Clear any image from the image viewing widget

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

// Load the Null into the hex editor

hexEdit->setData(data);

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

dataSource = HexBuffer;

break;

}

break;

case Text:

switch (editMode) {

case TextEditor:

// Load the text into the text editor

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

ui->editorText->setPlainText(textData);

// Enable text editing

ui->editorText->setEnabled(true);

// Select all of the text by default

ui->editorText->selectAll();

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

dataSource = TextBuffer;

break;

case HexEditor:

// Load the text into the hex editor

hexEdit->setData(data);

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

dataSource = HexBuffer;

break;

case ImageViewer:

// Clear any image from the image viewing widget

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

// Load the text into the text editor

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

ui->editorText->setPlainText(textData);

// Enable text editing

ui->editorText->setEnabled(true);

// Select all of the text by default

ui->editorText->selectAll();

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

dataSource = 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

hexEdit->setData(data);

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

dataSource = 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 with the text editor") %

"</i>"));

ui->editorText->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;

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 editor

hexEdit->setData(data);

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

dataSource = 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 with the text editor") %

"</i>"));

ui->editorText->setEnabled(false);

break;

case ImageViewer:

// Clear any image from the image viewing widget

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

break;

}

}

}

void EditDialog::importData()

{

// 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")

#ifndef Q_OS_MAC // Filters on OS X are buggy

, tr("Text files(*.txt);;Image files(%1);;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);

}

}

}

void EditDialog::exportData()

{

// Images get special treatment

QString fileExt;

if (dataType == 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(*)";

} else {

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

}

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))

{

if (dataSource == HexBuffer) {

// Data source is the hex buffer

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

} else {

// Data source is the text buffer

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

}

file.close();

}

}

}

void EditDialog::setNull()

{

ui->editorText->clear();

ui->editorImage->clear();

hexEdit->setData(QByteArray());

dataType = Null;

// Check if in text editor mode

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

if (editMode == TextEditor) {

// Setting NULL in the text editor switches the data source to it

dataSource = TextBuffer;

// Ensure the text editor is enabled

ui->editorText->setEnabled(true);

// The text editor doesn't know the difference between an empty string

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

textNullSet = true;

}

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

updateCellInfo(hexEdit->data());

ui->editorText->setFocus();

}

void EditDialog::updateApplyButton()

{

if (!isReadOnly)

ui->buttonApply->setEnabled(true);

}

void EditDialog::accept()

{

if(!currentIndex.isValid())

return;

if (dataSource == TextBuffer) {

// Check if a NULL is set in the text editor

if (textNullSet) {

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

} else {

// It's not NULL, so proceed with normal text string checking

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

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

if (oldData != newData)

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

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

}

} else {

// 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);

}

}

// Called when the user manually changes the "Mode" drop down combobox

void EditDialog::editModeChanged(int newMode)

{

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

if (dataSource == TextBuffer) {

switch (newMode) {

case TextEditor: // Switching to the text editor

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

break;

case HexEditor: // Switching to the hex editor

// Convert the text widget buffer for the hex widget

hexEdit->setData(ui->editorText->toPlainText().toUtf8());

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

dataSource = HexBuffer;

break;

case ImageViewer:

// Clear any image from the image viewing widget

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

break;

}

// Switch to the selected editor

ui->editorStack->setCurrentIndex(newMode);

return;

}

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

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

if (dataSource == HexBuffer) {

// Switch to the selected editor first, as loadData() relies on it

// being current

ui->editorStack->setCurrentIndex(newMode);

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

loadData(hexEdit->data());

}

}

// Called for every keystroke in the text editor (only)

void EditDialog::editTextChanged()

{

if (dataSource == TextBuffer) {

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

// any more

textNullSet = false;

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

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

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

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

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

}

}

// Determine the type of data in the cell

int EditDialog::checkDataType(const QByteArray& data)

{

QByteArray cellData = data;

// Check for NULL data type

if (cellData.isNull()) {

return Null;

}

// Check if it's an image

QBuffer imageBuffer(&cellData);

QImageReader readerBuffer(&imageBuffer);

bool someCheck = readerBuffer.canRead();

if (someCheck == true) {

return Image;

}

// Check if it's text only

if (QString(cellData).toUtf8() == cellData) { // Is there a better way to check this?

return Text;

}

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

return Binary;

}

void EditDialog::toggleOverwriteMode()

{

static bool currentMode = false;

currentMode = !currentMode;

hexEdit->setOverwriteMode(currentMode);

ui->editorText->setOverwriteMode(currentMode);

}

void EditDialog::setFocus()

{

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 editor.

ui->editorText->setFocus();

ui->editorText->selectAll();

}

// Enables or disables the Apply, Null, & Import buttons in the Edit Cell dock

void EditDialog::setReadOnly(bool ro)

{

isReadOnly = ro;

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

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

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

}

// Update the information labels in the bottom left corner of the dialog

void EditDialog::updateCellInfo(const QByteArray& data)

{

QByteArray cellData = data;

// Image data needs special treatment

if (dataType == Image) {

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;

}

// Determine the length of the cell data

int dataLength = cellData.length();

// 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)", "", dataLength));

break;

case Text:

// Text only

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

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

break;

default:

// 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;

}

}

QString EditDialog::humanReadableSize(double byteCount)

{

QList<QString> units;

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

foreach (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";

}