# HG changeset patch
# User Teemu Piippo <crimsondusk64@gmail.com>
# Date 1441547842 -10800
# Node ID 09e1a3e272ecfdbbcc39a940f56ed7fb73e299fb
# Parent  23436e487f0c908e0bed12191936bf1f4613afdc
Split PartDownloadRequest into its own file
Moved ui/downloadfrom.ui to src/partdownloader.ui

diff -r 23436e487f0c -r 09e1a3e272ec CMakeLists.txt
--- a/CMakeLists.txt	Sun Sep 06 16:42:57 2015 +0300
+++ b/CMakeLists.txt	Sun Sep 06 16:57:22 2015 +0300
@@ -52,7 +52,8 @@
 	src/mainwindow.cpp
 	src/messageLog.cpp
 	src/miscallenous.cpp
-	src/partDownloader.cpp
+	src/partdownloader.cpp
+	src/partdownloadrequest.cpp
 	src/primitives.cpp
 	src/radioGroup.cpp
 	src/ringFinder.cpp
@@ -102,7 +103,8 @@
 	src/mainwindow.h
 	src/messageLog.h
 	src/miscallenous.h
-	src/partDownloader.h
+	src/partdownloader.h
+	src/partdownloadrequest.h
 	src/primitives.h
 	src/radioGroup.h
 	src/ringFinder.h
@@ -131,7 +133,6 @@
 	ui/about.ui
 	ui/addhistoryline.ui
 	ui/coverer.ui
-	ui/downloadfrom.ui
 	ui/edger2.ui
 	ui/editraw.ui
 	ui/extprogpath.ui
@@ -145,6 +146,7 @@
 	ui/rotpoint.ui
 	ui/ytruder.ui
 	src/mainwindow.ui
+	src/partdownloader.ui
 	src/dialogs/colorselector.ui
 	src/dialogs/configdialog.ui
 	src/dialogs/ldrawpathdialog.ui
diff -r 23436e487f0c -r 09e1a3e272ec src/ldDocument.cpp
--- a/src/ldDocument.cpp	Sun Sep 06 16:42:57 2015 +0300
+++ b/src/ldDocument.cpp	Sun Sep 06 16:57:22 2015 +0300
@@ -28,7 +28,7 @@
 #include "editHistory.h"
 #include "glRenderer.h"
 #include "glCompiler.h"
-#include "partDownloader.h"
+#include "partdownloader.h"
 #include "ldpaths.h"
 #include "documentloader.h"
 #include "dialogs/openprogressdialog.h"
diff -r 23436e487f0c -r 09e1a3e272ec src/partDownloader.cpp
--- a/src/partDownloader.cpp	Sun Sep 06 16:42:57 2015 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,599 +0,0 @@
-/*
- *  LDForge: LDraw parts authoring CAD
- *  Copyright (C) 2013 - 2015 Teemu Piippo
- *
- *  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 3 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <QNetworkAccessManager>
-#include <QNetworkRequest>
-#include <QNetworkReply>
-#include <QDir>
-#include <QProgressBar>
-#include <QPushButton>
-#include <QFileDialog>
-#include <QMessageBox>
-#include "partDownloader.h"
-#include "ui_downloadfrom.h"
-#include "basics.h"
-#include "mainwindow.h"
-#include "ldDocument.h"
-#include "glRenderer.h"
-
-ConfigOption (QString DownloadFilePath)
-ConfigOption (bool GuessDownloadPaths = true)
-ConfigOption (bool AutoCloseDownloadDialog = true)
-
-const char* g_unofficialLibraryURL = "http://ldraw.org/library/unofficial/";
-
-PartDownloader::PartDownloader (QWidget* parent) :
-	QDialog (parent),
-	HierarchyElement (parent),
-	ui (*new Ui_DownloadFrom),
-	m_source (SourceType (0))
-{
-	ui.setupUi (this);
-	ui.fname->setFocus();
-
-#ifdef USE_QT5
-	ui.progress->horizontalHeader()->setSectionResizeMode (QHeaderView::Stretch);
-#else
-	ui.progress->horizontalHeader()->setResizeMode (PartLabelColumn, QHeaderView::Stretch);
-#endif
-
-	m_downloadButton = new QPushButton (tr ("Download"));
-	ui.buttonBox->addButton (m_downloadButton, QDialogButtonBox::ActionRole);
-	button (Abort)->setEnabled (false);
-	connect (ui.source, SIGNAL (currentIndexChanged (int)), this, SLOT (sourceChanged (int)));
-	connect (ui.buttonBox, SIGNAL (clicked (QAbstractButton*)), this, SLOT (buttonClicked (QAbstractButton*)));
-}
-
-PartDownloader::~PartDownloader()
-{
-	delete &ui;
-}
-
-void PartDownloader::checkValidPath()
-{
-	QString path = downloadPath();
-
-	if (path.isEmpty() or not QDir (path).exists())
-	{
-		QMessageBox::information(this, "Notice", "Please input a path for files to download.");
-		path = QFileDialog::getExistingDirectory (this, "Path for downloaded files:");
-
-		if (path.isEmpty())
-			reject();
-		else
-			m_config->setDownloadFilePath (path);
-	}
-}
-
-QString PartDownloader::url()
-{
-	const SourceType src = sourceType();
-	QString dest;
-
-	switch (src)
-	{
-		case PartsTracker:
-			dest = ui.fname->text();
-			modifyDestination (dest);
-			ui.fname->setText (dest);
-			return g_unofficialLibraryURL + dest;
-
-		case CustomURL:
-			return ui.fname->text();
-	}
-
-	// Shouldn't happen
-	return "";
-}
-
-void PartDownloader::modifyDestination (QString& dest) const
-{
-	dest = dest.simplified();
-
-	// If the user doesn't want us to guess, stop right here.
-	if (not m_config->guessDownloadPaths())
-		return;
-
-	// Ensure .dat extension
-	if (dest.right (4) != ".dat")
-	{
-		// Remove the existing extension, if any. It may be we're here over a
-		// typo in the .dat extension.
-		const int dotpos = dest.lastIndexOf (".");
-
-		if ((dotpos != -1) and (dotpos >= dest.length() - 4))
-			dest.chop (dest.length() - dotpos);
-
-		dest += ".dat";
-	}
-
-	// If the part starts with s\ or s/, then use parts/s/. Same goes with
-	// 48\ and p/48/.
-	if (isOneOf (dest.left (2), "s\\", "s/"))
-	{
-		dest.remove (0, 2);
-		dest.prepend ("parts/s/");
-	}
-	else if (isOneOf (dest.left (3), "48\\", "48/"))
-	{
-		dest.remove (0, 3);
-		dest.prepend ("p/48/");
-	}
-
-	/* Try determine where to put this part. We have four directories:
-	   parts/, parts/s/, p/, and p/48/. If we haven't already specified
-	   either parts/ or p/, we need to add it automatically. Part files
-	   are numbers wit a possible u prefix for parts with unknown number
-	   which can be followed by any of:
-	   - c** (composites)
-	   - d** (formed stickers)
-	   - p** (patterns)
-	   - a lowercase alphabetic letter for variants
-
-	   Subfiles (usually) have an s** prefix, in which case we use parts/s/.
-	   Note that the regex starts with a '^' so it won't catch already fully
-	   given part file names. */
-	QString partRegex = "^u?[0-9]+(c[0-9][0-9]+)*(d[0-9][0-9]+)*[a-z]?(p[0-9a-z][0-9a-z]+)*";
-	QString subpartRegex = partRegex + "s[0-9][0-9]+";
-
-	partRegex += "\\.dat$";
-	subpartRegex += "\\.dat$";
-
-	if (QRegExp (subpartRegex).exactMatch (dest))
-		dest.prepend ("parts/s/");
-	else if (QRegExp (partRegex).exactMatch (dest))
-		dest.prepend ("parts/");
-	else if (not dest.startsWith ("parts/") and not dest.startsWith ("p/"))
-		dest.prepend ("p/");
-}
-
-PartDownloader::SourceType PartDownloader::sourceType() const
-{
-	return m_source;
-}
-
-void PartDownloader::setSourceType (SourceType src)
-{
-	m_source = src;
-	ui.source->setCurrentIndex (int (src));
-}
-
-void PartDownloader::sourceChanged (int i)
-{
-	if (i == CustomURL)
-		ui.fileNameLabel->setText (tr ("URL:"));
-	else
-		ui.fileNameLabel->setText (tr ("File name:"));
-
-	m_source = SourceType (i);
-}
-
-void PartDownloader::buttonClicked (QAbstractButton* btn)
-{
-	if (btn == button (Close))
-	{
-		reject();
-	}
-	else if (btn == button (Abort))
-	{
-		m_isAborted = true;
-
-		for (PartDownloadRequest* req : m_requests)
-			req->abort();
-	}
-	else if (btn == button (Download))
-	{
-		QString dest = ui.fname->text();
-		setPrimaryFile (nullptr);
-		m_isAborted = false;
-
-		if (sourceType() == CustomURL)
-			dest = Basename (url());
-
-		modifyDestination (dest);
-
-		if (QFile::exists (downloadPath() + DIRSLASH + dest))
-		{
-			const QString overwritemsg = format (tr ("%1 already exists in download directory. Overwrite?"), dest);
-			if (not Confirm (tr ("Overwrite?"), overwritemsg))
-				return;
-		}
-
-		downloadFile (dest, url(), true);
-	}
-}
-
-void PartDownloader::downloadFile (QString dest, QString url, bool primary)
-{
-	int row = ui.progress->rowCount();
-
-	// Don't download files repeadetly.
-	if (m_filesToDownload.indexOf (dest) != -1)
-		return;
-
-	print ("Downloading %1 from %2\n", dest, url);
-	modifyDestination (dest);
-	PartDownloadRequest* req = new PartDownloadRequest (url, dest, primary, this);
-	m_filesToDownload << dest;
-	m_requests << req;
-	ui.progress->insertRow (row);
-	req->setTableRow (row);
-	req->updateToTable();
-	m_downloadButton->setEnabled (false);
-	ui.progress->setEnabled (true);
-	ui.fname->setEnabled (false);
-	ui.source->setEnabled (false);
-	button (Close)->setEnabled (false);
-	button (Abort)->setEnabled (true);
-	button (Download)->setEnabled (false);
-}
-
-void PartDownloader::downloadFromPartsTracker (QString file)
-{
-	modifyDestination (file);
-	downloadFile (file, g_unofficialLibraryURL + file, false);
-}
-
-void PartDownloader::checkIfFinished()
-{
-	bool failed = isAborted();
-
-	// If there is some download still working, we're not finished.
-	for (PartDownloadRequest* req : m_requests)
-	{
-		if (not req->isFinished())
-			return;
-
-		if (req->failed())
-			failed = true;
-	}
-
-	for (PartDownloadRequest* req : m_requests)
-		delete req;
-
-	m_requests.clear();
-
-	if (primaryFile())
-		emit primaryFileDownloaded();
-
-	for (LDDocument* f : m_files)
-		f->reloadAllSubfiles();
-
-	if (m_config->autoCloseDownloadDialog() and not failed)
-	{
-		// Close automatically if desired.
-		accept();
-	}
-	else
-	{
-		// Allow the prompt be closed now.
-		button (Abort)->setEnabled (false);
-		button (Close)->setEnabled (true);
-	}
-}
-
-QPushButton* PartDownloader::button (PartDownloader::Button i)
-{
-	switch (i)
-	{
-		case Download:
-			return m_downloadButton;
-
-		case Abort:
-			return qobject_cast<QPushButton*> (ui.buttonBox->button (QDialogButtonBox::Abort));
-
-		case Close:
-			return qobject_cast<QPushButton*> (ui.buttonBox->button (QDialogButtonBox::Close));
-	}
-
-	return nullptr;
-}
-
-void PartDownloader::addFile (LDDocument* f)
-{
-	m_files << f;
-}
-
-bool PartDownloader::isAborted() const
-{
-	return m_isAborted;
-}
-
-LDDocument* PartDownloader::primaryFile() const
-{
-	return m_primaryFile;
-}
-
-void PartDownloader::setPrimaryFile (LDDocument* document)
-{
-	m_primaryFile = document;
-}
-
-QString PartDownloader::downloadPath()
-{
-	QString path = m_config->downloadFilePath();
-
-	if (DIRSLASH[0] != '/')
-		path.replace (DIRSLASH, "/");
-
-	return path;
-}
-
-QTableWidget* PartDownloader::progressTable() const
-{
-	return ui.progress;
-}
-
-//
-// ---------------------------------------------------------------------------------------------------------------------
-//
-
-PartDownloadRequest::PartDownloadRequest (QString url, QString dest, bool primary, PartDownloader* parent) :
-	QObject (parent),
-	m_state (State::Requesting),
-	m_prompt (parent),
-	m_url (url),
-	m_destination (dest),
-	m_filePath (parent->downloadPath() + DIRSLASH + dest),
-	m_networkManager (new QNetworkAccessManager),
-	m_isFirstUpdate (true),
-	m_isPrimary (primary),
-	m_filePointer (nullptr)
-{
-	// Make sure that we have a valid destination.
-	QString dirpath = Dirname (filePath());
-	QDir dir (dirpath);
-
-	if (not dir.exists())
-	{
-		print ("Creating %1...\n", dirpath);
-
-		if (not dir.mkpath (dirpath))
-			Critical (format (tr ("Couldn't create the directory %1!"), dirpath));
-	}
-
-	m_networkReply = m_networkManager->get (QNetworkRequest (QUrl (url)));
-	connect (networkReply(), SIGNAL (finished()), this, SLOT (downloadFinished()));
-	connect (networkReply(), SIGNAL (readyRead()), this, SLOT (readFromNetworkReply()));
-	connect (networkReply(), SIGNAL (downloadProgress (qint64, qint64)),
-		this, SLOT (updateDownloadProgress (qint64, qint64)));
-}
-
-PartDownloadRequest::~PartDownloadRequest() {}
-
-bool PartDownloadRequest::failed() const
-{
-	return m_state == State::Failed;
-}
-
-int PartDownloadRequest::tableRow() const
-{
-	return m_tableRow;
-}
-
-void PartDownloadRequest::setTableRow (int value)
-{
-	m_tableRow = value;
-}
-
-PartDownloader* PartDownloadRequest::prompt() const
-{
-	return m_prompt;
-}
-
-QString PartDownloadRequest::url() const
-{
-	return m_url;
-}
-
-QString PartDownloadRequest::destination() const
-{
-	return m_destination;
-}
-
-QString PartDownloadRequest::filePath() const
-{
-	return m_filePath;
-}
-
-bool PartDownloadRequest::isFirstUpdate() const
-{
-	return m_isFirstUpdate;
-}
-
-qint64 PartDownloadRequest::numBytesRead() const
-{
-	return m_numBytesRead;
-}
-
-qint64 PartDownloadRequest::numBytesTotal() const
-{
-	return m_numBytesTotal;
-}
-
-bool PartDownloadRequest::isPrimary() const
-{
-	return m_isPrimary;
-}
-
-QNetworkReply* PartDownloadRequest::networkReply() const
-{
-	return m_networkReply;
-}
-
-void PartDownloadRequest::updateToTable()
-{
-	QTableWidget* table = prompt()->progressTable();
-
-	switch (m_state)
-	{
-	case State::Requesting:
-	case State::Downloading:
-		{
-			QWidget* cellwidget = table->cellWidget (tableRow(), PartDownloader::ProgressColumn);
-			QProgressBar* progressBar = qobject_cast<QProgressBar*> (cellwidget);
-
-			if (not progressBar)
-			{
-				progressBar = new QProgressBar;
-				table->setCellWidget (tableRow(), PartDownloader::ProgressColumn, progressBar);
-			}
-
-			progressBar->setRange (0, numBytesTotal());
-			progressBar->setValue (numBytesRead());
-		}
-		break;
-
-	case State::Finished:
-	case State::Failed:
-		{
-			const QString text = (m_state == State::Finished)
-				? "<b><span style=\"color: #080\">FINISHED</span></b>"
-				: "<b><span style=\"color: #800\">FAILED</span></b>";
-
-			QLabel* lb = new QLabel (text);
-			lb->setAlignment (Qt::AlignCenter);
-			table->setCellWidget (tableRow(), PartDownloader::ProgressColumn, lb);
-		}
-		break;
-	}
-
-	QLabel* label = qobject_cast<QLabel*> (table->cellWidget (tableRow(), PartDownloader::PartLabelColumn));
-
-	if (isFirstUpdate())
-	{
-		label = new QLabel (format ("<b>%1</b>", destination()), table);
-		table->setCellWidget (tableRow(), PartDownloader::PartLabelColumn, label);
-	}
-
-	// Make sure that the cell is big enough to contain the label
-	if (table->columnWidth (PartDownloader::PartLabelColumn) < label->width())
-		table->setColumnWidth (PartDownloader::PartLabelColumn, label->width());
-
-	m_isFirstUpdate = false;
-}
-
-void PartDownloadRequest::downloadFinished()
-{
-	if (networkReply()->error() != QNetworkReply::NoError)
-	{
-		if (isPrimary() and not prompt()->isAborted())
-			Critical (networkReply()->errorString());
-
-		print ("Unable to download %1: %2\n", destination(), networkReply()->errorString());
-		m_state = State::Failed;
-	}
-	else if (m_state != State::Failed)
-	{
-		m_state = State::Finished;
-	}
-
-	m_numBytesRead = numBytesTotal();
-	updateToTable();
-
-	if (m_filePointer)
-	{
-		m_filePointer->close();
-		delete m_filePointer;
-		m_filePointer = nullptr;
-
-		if (m_state == State::Failed)
-			QFile::remove (filePath());
-	}
-
-	if (m_state != State::Finished)
-	{
-		prompt()->checkIfFinished();
-		return;
-	}
-
-	// Try to load this file now.
-	LDDocument* f = OpenDocument (filePath(), false, not isPrimary());
-
-	if (f == nullptr)
-		return;
-
-	// Iterate through this file and check for errors. If there's any that stems
-	// from unknown file references, try resolve that by downloading the reference.
-	// This is why downloading a part may end up downloading multiple files, as
-	// it resolves dependencies.
-	for (LDObject* obj : f->objects())
-	{
-		LDError* err = dynamic_cast<LDError*> (obj);
-
-		if (err == nullptr or err->fileReferenced().isEmpty())
-			continue;
-
-		QString dest = err->fileReferenced();
-		prompt()->downloadFromPartsTracker (dest);
-	}
-
-	prompt()->addFile (f);
-
-	if (isPrimary())
-	{
-		AddRecentFile (filePath());
-		prompt()->setPrimaryFile (f);
-	}
-
-	prompt()->checkIfFinished();
-}
-
-void PartDownloadRequest::updateDownloadProgress (int64 recv, int64 total)
-{
-	m_numBytesRead = recv;
-	m_numBytesTotal = total;
-	m_state = State::Downloading;
-	updateToTable();
-}
-
-void PartDownloadRequest::readFromNetworkReply()
-{
-	if (m_state == State::Failed)
-		return;
-
-	if (m_filePointer == nullptr)
-	{
-		m_filePath.replace ("\\", "/");
-
-		// We have already asked the user whether we can overwrite so we're good to go here.
-		m_filePointer = new QFile (filePath().toLocal8Bit());
-
-		if (not m_filePointer->open (QIODevice::WriteOnly))
-		{
-			Critical (format (tr ("Couldn't open %1 for writing: %2"), filePath(), strerror (errno)));
-			m_state = State::Failed;
-			networkReply()->abort();
-			updateToTable();
-			prompt()->checkIfFinished();
-			return;
-		}
-	}
-
-	m_filePointer->write (networkReply()->readAll());
-}
-
-bool PartDownloadRequest::isFinished() const
-{
-	return isOneOf (m_state, State::Finished, State::Failed);
-}
-
-void PartDownloadRequest::abort()
-{
-	networkReply()->abort();
-}
diff -r 23436e487f0c -r 09e1a3e272ec src/partDownloader.h
--- a/src/partDownloader.h	Sun Sep 06 16:42:57 2015 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,144 +0,0 @@
-/*
- *  LDForge: LDraw parts authoring CAD
- *  Copyright (C) 2013 - 2015 Teemu Piippo
- *
- *  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 3 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-#include <QDialog>
-#include "main.h"
-#include "basics.h"
-#include "ldDocument.h"
-
-class LDDocument;
-class QFile;
-class PartDownloadRequest;
-class Ui_DownloadFrom;
-class QNetworkAccessManager;
-class QNetworkRequest;
-class QNetworkReply;
-class QAbstractButton;
-
-class PartDownloader : public QDialog, public HierarchyElement
-{
-	Q_OBJECT
-
-public:
-	enum SourceType
-	{
-		PartsTracker,
-		CustomURL,
-	};
-
-	enum Button
-	{
-		Download,
-		Abort,
-		Close
-	};
-
-	enum TableColumn
-	{
-		PartLabelColumn,
-		ProgressColumn,
-	};
-
-	using RequestList = QList<PartDownloadRequest*>;
-
-	explicit PartDownloader (QWidget* parent = nullptr);
-	virtual ~PartDownloader();
-
-	void addFile (LDDocument* f);
-	QPushButton* button (Button i);
-	Q_SLOT void buttonClicked (QAbstractButton* btn);
-	Q_SLOT void checkIfFinished();
-	void checkValidPath();
-	void downloadFile (QString dest, QString url, bool primary);
-	void downloadFromPartsTracker (QString file);
-	QString downloadPath();
-	bool isAborted() const;
-	void modifyDestination (QString& dest) const;
-	LDDocument* primaryFile() const;
-	class QTableWidget* progressTable() const;
-	void setPrimaryFile (LDDocument* document);
-	void setSourceType (SourceType src);
-	Q_SLOT void sourceChanged (int i);
-	SourceType sourceType() const;
-	QString url();
-
-signals:
-	void primaryFileDownloaded();
-
-private:
-	class Ui_DownloadFrom& ui;
-	QStringList m_filesToDownload;
-	RequestList m_requests;
-	QPushButton* m_downloadButton;
-	SourceType m_source;
-	QList<LDDocument*> m_files;
-	LDDocument* m_primaryFile;
-	bool m_isAborted;
-};
-
-class PartDownloadRequest : public QObject
-{
-	Q_OBJECT
-
-public:
-	enum class State
-	{
-		Requesting,
-		Downloading,
-		Finished,
-		Failed,
-	};
-
-	explicit PartDownloadRequest (QString url, QString dest, bool primary, PartDownloader* parent);
-	virtual ~PartDownloadRequest();
-
-	Q_SLOT void abort();
-	QString destination() const;
-	Q_SLOT void downloadFinished();
-	bool failed() const;
-	QString filePath() const;
-	bool isFinished() const;
-	bool isFirstUpdate() const;
-	bool isPrimary() const;
-	QNetworkReply* networkReply() const;
-	qint64 numBytesRead() const;
-	qint64 numBytesTotal() const;
-	PartDownloader* prompt() const;
-	Q_SLOT void readFromNetworkReply();
-	void setTableRow (int value);
-	int tableRow() const;
-	Q_SLOT void updateDownloadProgress (qint64 recv, qint64 total);
-	void updateToTable();
-	QString url() const;
-
-private:
-	int m_tableRow;
-	State m_state;
-	PartDownloader* m_prompt;
-	QString m_url;
-	QString m_destination;
-	QString m_filePath;
-	QNetworkAccessManager* m_networkManager;
-	QNetworkReply* m_networkReply;
-	bool m_isFirstUpdate;
-	bool m_isPrimary;
-	qint64 m_numBytesRead;
-	qint64 m_numBytesTotal;
-	QFile* m_filePointer;
-};
diff -r 23436e487f0c -r 09e1a3e272ec src/partdownloader.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/partdownloader.cpp	Sun Sep 06 16:57:22 2015 +0300
@@ -0,0 +1,336 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 - 2015 Teemu Piippo
+ *
+ *  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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QDir>
+#include <QPushButton>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QTableWidget>
+#include "partdownloader.h"
+#include "partdownloadrequest.h"
+#include "ui_partdownloader.h"
+#include "basics.h"
+#include "mainwindow.h"
+#include "ldDocument.h"
+#include "glRenderer.h"
+
+ConfigOption (QString DownloadFilePath)
+ConfigOption (bool GuessDownloadPaths = true)
+ConfigOption (bool AutoCloseDownloadDialog = true)
+
+const char* g_unofficialLibraryURL = "http://ldraw.org/library/unofficial/";
+
+PartDownloader::PartDownloader (QWidget* parent) :
+	QDialog (parent),
+	HierarchyElement (parent),
+	ui (*new Ui_PartDownloader),
+	m_source (SourceType (0))
+{
+	ui.setupUi (this);
+
+#ifdef USE_QT5
+	ui.progressTable->horizontalHeader()->setSectionResizeMode (QHeaderView::Stretch);
+#else
+	ui.progressTable->horizontalHeader()->setResizeMode (PartLabelColumn, QHeaderView::Stretch);
+#endif
+
+	m_downloadButton = new QPushButton (tr ("Download"));
+	ui.buttonBox->addButton (m_downloadButton, QDialogButtonBox::ActionRole);
+	button (Abort)->setEnabled (false);
+	connect (ui.source, SIGNAL (currentIndexChanged (int)), this, SLOT (sourceChanged (int)));
+	connect (ui.buttonBox, SIGNAL (clicked (QAbstractButton*)), this, SLOT (buttonClicked (QAbstractButton*)));
+}
+
+PartDownloader::~PartDownloader()
+{
+	delete &ui;
+}
+
+void PartDownloader::checkValidPath()
+{
+	QString path = downloadPath();
+
+	if (path.isEmpty() or not QDir (path).exists())
+	{
+		QMessageBox::information(this, "Notice", "Please input a path for files to download.");
+		path = QFileDialog::getExistingDirectory (this, "Path for downloaded files:");
+
+		if (path.isEmpty())
+			reject();
+		else
+			m_config->setDownloadFilePath (path);
+	}
+}
+
+QString PartDownloader::url()
+{
+	QString destination;
+
+	switch (sourceType())
+	{
+	case PartsTracker:
+		destination = ui.filename->text();
+		modifyDestination (destination);
+		ui.filename->setText (destination);
+		return g_unofficialLibraryURL + destination;
+
+	case CustomURL:
+		return ui.filename->text();
+	}
+
+	// Shouldn't happen
+	return "";
+}
+
+void PartDownloader::modifyDestination (QString& dest) const
+{
+	dest = dest.simplified();
+
+	// If the user doesn't want us to guess, stop right here.
+	if (not m_config->guessDownloadPaths())
+		return;
+
+	// Ensure .dat extension
+	if (dest.right (4) != ".dat")
+	{
+		// Remove the existing extension, if any. It may be we're here over a
+		// typo in the .dat extension.
+		const int dotpos = dest.lastIndexOf (".");
+
+		if ((dotpos != -1) and (dotpos >= dest.length() - 4))
+			dest.chop (dest.length() - dotpos);
+
+		dest += ".dat";
+	}
+
+	// If the part starts with s\ or s/, then use parts/s/. Same goes with
+	// 48\ and p/48/.
+	if (isOneOf (dest.left (2), "s\\", "s/"))
+	{
+		dest.remove (0, 2);
+		dest.prepend ("parts/s/");
+	}
+	else if (isOneOf (dest.left (3), "48\\", "48/"))
+	{
+		dest.remove (0, 3);
+		dest.prepend ("p/48/");
+	}
+
+	/* Try determine where to put this part. We have four directories:
+	   parts/, parts/s/, p/, and p/48/. If we haven't already specified
+	   either parts/ or p/, we need to add it automatically. Part files
+	   are numbers wit a possible u prefix for parts with unknown number
+	   which can be followed by any of:
+	   - c** (composites)
+	   - d** (formed stickers)
+	   - p** (patterns)
+	   - a lowercase alphabetic letter for variants
+
+	   Subfiles (usually) have an s** prefix, in which case we use parts/s/.
+	   Note that the regex starts with a '^' so it won't catch already fully
+	   given part file names. */
+	QString partRegex = "^u?[0-9]+(c[0-9][0-9]+)*(d[0-9][0-9]+)*[a-z]?(p[0-9a-z][0-9a-z]+)*";
+	QString subpartRegex = partRegex + "s[0-9][0-9]+";
+
+	partRegex += "\\.dat$";
+	subpartRegex += "\\.dat$";
+
+	if (QRegExp (subpartRegex).exactMatch (dest))
+		dest.prepend ("parts/s/");
+	else if (QRegExp (partRegex).exactMatch (dest))
+		dest.prepend ("parts/");
+	else if (not dest.startsWith ("parts/") and not dest.startsWith ("p/"))
+		dest.prepend ("p/");
+}
+
+PartDownloader::SourceType PartDownloader::sourceType() const
+{
+	return m_source;
+}
+
+void PartDownloader::setSourceType (SourceType src)
+{
+	m_source = src;
+	ui.source->setCurrentIndex (int (src));
+}
+
+void PartDownloader::sourceChanged (int i)
+{
+	if (i == CustomURL)
+		ui.fileNameLabel->setText (tr ("URL:"));
+	else
+		ui.fileNameLabel->setText (tr ("File name:"));
+
+	m_source = SourceType (i);
+}
+
+void PartDownloader::buttonClicked (QAbstractButton* btn)
+{
+	if (btn == button (Close))
+	{
+		reject();
+	}
+	else if (btn == button (Abort))
+	{
+		m_isAborted = true;
+
+		for (PartDownloadRequest* req : m_requests)
+			req->abort();
+	}
+	else if (btn == button (Download))
+	{
+		QString dest = ui.filename->text();
+		setPrimaryFile (nullptr);
+		m_isAborted = false;
+
+		if (sourceType() == CustomURL)
+			dest = Basename (url());
+
+		modifyDestination (dest);
+
+		if (QFile::exists (downloadPath() + DIRSLASH + dest))
+		{
+			const QString overwritemsg = format (tr ("%1 already exists in download directory. Overwrite?"), dest);
+			if (not Confirm (tr ("Overwrite?"), overwritemsg))
+				return;
+		}
+
+		downloadFile (dest, url(), true);
+	}
+}
+
+void PartDownloader::downloadFile (QString dest, QString url, bool primary)
+{
+	int row = ui.progressTable->rowCount();
+
+	// Don't download files repeadetly.
+	if (m_filesToDownload.indexOf (dest) != -1)
+		return;
+
+	print ("Downloading %1 from %2\n", dest, url);
+	modifyDestination (dest);
+	PartDownloadRequest* req = new PartDownloadRequest (url, dest, primary, this);
+	m_filesToDownload << dest;
+	m_requests << req;
+	ui.progressTable->insertRow (row);
+	req->setTableRow (row);
+	req->updateToTable();
+	m_downloadButton->setEnabled (false);
+	ui.progressTable->setEnabled (true);
+	ui.filename->setEnabled (false);
+	ui.source->setEnabled (false);
+	button (Close)->setEnabled (false);
+	button (Abort)->setEnabled (true);
+	button (Download)->setEnabled (false);
+}
+
+void PartDownloader::downloadFromPartsTracker (QString file)
+{
+	modifyDestination (file);
+	downloadFile (file, g_unofficialLibraryURL + file, false);
+}
+
+void PartDownloader::checkIfFinished()
+{
+	bool failed = isAborted();
+
+	// If there is some download still working, we're not finished.
+	for (PartDownloadRequest* req : m_requests)
+	{
+		if (not req->isFinished())
+			return;
+
+		if (req->failed())
+			failed = true;
+	}
+
+	for (PartDownloadRequest* req : m_requests)
+		delete req;
+
+	m_requests.clear();
+
+	if (primaryFile())
+		emit primaryFileDownloaded();
+
+	for (LDDocument* f : m_files)
+		f->reloadAllSubfiles();
+
+	if (m_config->autoCloseDownloadDialog() and not failed)
+	{
+		// Close automatically if desired.
+		accept();
+	}
+	else
+	{
+		// Allow the prompt be closed now.
+		button (Abort)->setEnabled (false);
+		button (Close)->setEnabled (true);
+	}
+}
+
+QPushButton* PartDownloader::button (PartDownloader::Button i)
+{
+	switch (i)
+	{
+		case Download:
+			return m_downloadButton;
+
+		case Abort:
+			return qobject_cast<QPushButton*> (ui.buttonBox->button (QDialogButtonBox::Abort));
+
+		case Close:
+			return qobject_cast<QPushButton*> (ui.buttonBox->button (QDialogButtonBox::Close));
+	}
+
+	return nullptr;
+}
+
+void PartDownloader::addFile (LDDocument* f)
+{
+	m_files << f;
+}
+
+bool PartDownloader::isAborted() const
+{
+	return m_isAborted;
+}
+
+LDDocument* PartDownloader::primaryFile() const
+{
+	return m_primaryFile;
+}
+
+void PartDownloader::setPrimaryFile (LDDocument* document)
+{
+	m_primaryFile = document;
+}
+
+QString PartDownloader::downloadPath()
+{
+	QString path = m_config->downloadFilePath();
+
+	if (DIRSLASH[0] != '/')
+		path.replace (DIRSLASH, "/");
+
+	return path;
+}
+
+QTableWidget* PartDownloader::progressTable() const
+{
+	return ui.progressTable;
+}
diff -r 23436e487f0c -r 09e1a3e272ec src/partdownloader.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/partdownloader.h	Sun Sep 06 16:57:22 2015 +0300
@@ -0,0 +1,93 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 - 2015 Teemu Piippo
+ *
+ *  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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <QDialog>
+#include "main.h"
+#include "basics.h"
+#include "ldDocument.h"
+
+class LDDocument;
+class QFile;
+class PartDownloadRequest;
+class Ui_DownloadFrom;
+class QNetworkAccessManager;
+class QNetworkRequest;
+class QNetworkReply;
+class QAbstractButton;
+
+class PartDownloader : public QDialog, public HierarchyElement
+{
+	Q_OBJECT
+
+public:
+	enum SourceType
+	{
+		PartsTracker,
+		CustomURL,
+	};
+
+	enum Button
+	{
+		Download,
+		Abort,
+		Close
+	};
+
+	enum TableColumn
+	{
+		PartLabelColumn,
+		ProgressColumn,
+	};
+
+	using RequestList = QList<PartDownloadRequest*>;
+
+	explicit PartDownloader (QWidget* parent = nullptr);
+	virtual ~PartDownloader();
+
+	void addFile (LDDocument* f);
+	QPushButton* button (Button i);
+	Q_SLOT void buttonClicked (QAbstractButton* btn);
+	Q_SLOT void checkIfFinished();
+	void checkValidPath();
+	void downloadFile (QString dest, QString url, bool primary);
+	void downloadFromPartsTracker (QString file);
+	QString downloadPath();
+	bool isAborted() const;
+	void modifyDestination (QString& dest) const;
+	LDDocument* primaryFile() const;
+	class QTableWidget* progressTable() const;
+	void setPrimaryFile (LDDocument* document);
+	void setSourceType (SourceType src);
+	Q_SLOT void sourceChanged (int i);
+	SourceType sourceType() const;
+	QString url();
+
+signals:
+	void primaryFileDownloaded();
+
+private:
+	class Ui_PartDownloader& ui;
+	QStringList m_filesToDownload;
+	RequestList m_requests;
+	QPushButton* m_downloadButton;
+	SourceType m_source;
+	QList<LDDocument*> m_files;
+	LDDocument* m_primaryFile;
+	bool m_isAborted;
+};
diff -r 23436e487f0c -r 09e1a3e272ec src/partdownloader.ui
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/partdownloader.ui	Sun Sep 06 16:57:22 2015 +0300
@@ -0,0 +1,143 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PartDownloader</class>
+ <widget class="QDialog" name="PartDownloader">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>546</width>
+    <height>405</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Download from LDraw.org</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="font">
+      <font>
+       <pointsize>11</pointsize>
+       <weight>75</weight>
+       <bold>true</bold>
+      </font>
+     </property>
+     <property name="text">
+      <string>Download from LDraw.org</string>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignCenter</set>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QGridLayout" name="gridLayout">
+     <item row="0" column="0">
+      <widget class="QLabel" name="fileNameLabel">
+       <property name="text">
+        <string>File name:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QLineEdit" name="filename"/>
+     </item>
+     <item row="1" column="0">
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Source:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QComboBox" name="source">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <item>
+        <property name="text">
+         <string>Parts tracker</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Custom URL</string>
+        </property>
+       </item>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QTableWidget" name="progressTable">
+     <property name="enabled">
+      <bool>false</bool>
+     </property>
+     <property name="editTriggers">
+      <set>QAbstractItemView::NoEditTriggers</set>
+     </property>
+     <property name="selectionMode">
+      <enum>QAbstractItemView::NoSelection</enum>
+     </property>
+     <attribute name="verticalHeaderVisible">
+      <bool>false</bool>
+     </attribute>
+     <column>
+      <property name="text">
+       <string>File</string>
+      </property>
+      <property name="font">
+       <font>
+        <weight>50</weight>
+        <bold>false</bold>
+       </font>
+      </property>
+     </column>
+     <column>
+      <property name="text">
+       <string>Status</string>
+      </property>
+     </column>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Abort|QDialogButtonBox::Close</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <tabstops>
+  <tabstop>filename</tabstop>
+  <tabstop>source</tabstop>
+  <tabstop>progressTable</tabstop>
+ </tabstops>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>PartDownloader</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>322</x>
+     <y>312</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff -r 23436e487f0c -r 09e1a3e272ec src/partdownloadrequest.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/partdownloadrequest.cpp	Sun Sep 06 16:57:22 2015 +0300
@@ -0,0 +1,283 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 - 2015 Teemu Piippo
+ *
+ *  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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QDir>
+#include <QNetworkAccessManager>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QTableWidget>
+#include <QProgressBar>
+#include <QLabel>
+#include "partdownloader.h"
+#include "partdownloadrequest.h"
+#include "mainwindow.h"
+
+PartDownloadRequest::PartDownloadRequest (QString url, QString dest, bool primary, PartDownloader* parent) :
+	QObject (parent),
+	m_state (State::Requesting),
+	m_prompt (parent),
+	m_url (url),
+	m_destination (dest),
+	m_filePath (parent->downloadPath() + DIRSLASH + dest),
+	m_networkManager (new QNetworkAccessManager),
+	m_isFirstUpdate (true),
+	m_isPrimary (primary),
+	m_filePointer (nullptr)
+{
+	// Make sure that we have a valid destination.
+	QString dirpath = Dirname (filePath());
+	QDir dir (dirpath);
+
+	if (not dir.exists())
+	{
+		print ("Creating %1...\n", dirpath);
+
+		if (not dir.mkpath (dirpath))
+			Critical (format (tr ("Couldn't create the directory %1!"), dirpath));
+	}
+
+	m_networkReply = m_networkManager->get (QNetworkRequest (QUrl (url)));
+	connect (networkReply(), SIGNAL (finished()), this, SLOT (downloadFinished()));
+	connect (networkReply(), SIGNAL (readyRead()), this, SLOT (readFromNetworkReply()));
+	connect (networkReply(), SIGNAL (downloadProgress (qint64, qint64)),
+		this, SLOT (updateDownloadProgress (qint64, qint64)));
+}
+
+PartDownloadRequest::~PartDownloadRequest() {}
+
+bool PartDownloadRequest::failed() const
+{
+	return m_state == State::Failed;
+}
+
+int PartDownloadRequest::tableRow() const
+{
+	return m_tableRow;
+}
+
+void PartDownloadRequest::setTableRow (int value)
+{
+	m_tableRow = value;
+}
+
+PartDownloader* PartDownloadRequest::prompt() const
+{
+	return m_prompt;
+}
+
+QString PartDownloadRequest::url() const
+{
+	return m_url;
+}
+
+QString PartDownloadRequest::destination() const
+{
+	return m_destination;
+}
+
+QString PartDownloadRequest::filePath() const
+{
+	return m_filePath;
+}
+
+bool PartDownloadRequest::isFirstUpdate() const
+{
+	return m_isFirstUpdate;
+}
+
+qint64 PartDownloadRequest::numBytesRead() const
+{
+	return m_numBytesRead;
+}
+
+qint64 PartDownloadRequest::numBytesTotal() const
+{
+	return m_numBytesTotal;
+}
+
+bool PartDownloadRequest::isPrimary() const
+{
+	return m_isPrimary;
+}
+
+QNetworkReply* PartDownloadRequest::networkReply() const
+{
+	return m_networkReply;
+}
+
+void PartDownloadRequest::updateToTable()
+{
+	QTableWidget* table = prompt()->progressTable();
+
+	switch (m_state)
+	{
+	case State::Requesting:
+	case State::Downloading:
+		{
+			QWidget* cellwidget = table->cellWidget (tableRow(), PartDownloader::ProgressColumn);
+			QProgressBar* progressBar = qobject_cast<QProgressBar*> (cellwidget);
+
+			if (not progressBar)
+			{
+				progressBar = new QProgressBar;
+				table->setCellWidget (tableRow(), PartDownloader::ProgressColumn, progressBar);
+			}
+
+			progressBar->setRange (0, numBytesTotal());
+			progressBar->setValue (numBytesRead());
+		}
+		break;
+
+	case State::Finished:
+	case State::Failed:
+		{
+			const QString text = (m_state == State::Finished)
+				? "<b><span style=\"color: #080\">FINISHED</span></b>"
+				: "<b><span style=\"color: #800\">FAILED</span></b>";
+
+			QLabel* lb = new QLabel (text);
+			lb->setAlignment (Qt::AlignCenter);
+			table->setCellWidget (tableRow(), PartDownloader::ProgressColumn, lb);
+		}
+		break;
+	}
+
+	QLabel* label = qobject_cast<QLabel*> (table->cellWidget (tableRow(), PartDownloader::PartLabelColumn));
+
+	if (isFirstUpdate())
+	{
+		label = new QLabel (format ("<b>%1</b>", destination()), table);
+		table->setCellWidget (tableRow(), PartDownloader::PartLabelColumn, label);
+	}
+
+	// Make sure that the cell is big enough to contain the label
+	if (table->columnWidth (PartDownloader::PartLabelColumn) < label->width())
+		table->setColumnWidth (PartDownloader::PartLabelColumn, label->width());
+
+	m_isFirstUpdate = false;
+}
+
+void PartDownloadRequest::downloadFinished()
+{
+	if (networkReply()->error() != QNetworkReply::NoError)
+	{
+		if (isPrimary() and not prompt()->isAborted())
+			Critical (networkReply()->errorString());
+
+		print ("Unable to download %1: %2\n", destination(), networkReply()->errorString());
+		m_state = State::Failed;
+	}
+	else if (m_state != State::Failed)
+	{
+		m_state = State::Finished;
+	}
+
+	m_numBytesRead = numBytesTotal();
+	updateToTable();
+
+	if (m_filePointer)
+	{
+		m_filePointer->close();
+		delete m_filePointer;
+		m_filePointer = nullptr;
+
+		if (m_state == State::Failed)
+			QFile::remove (filePath());
+	}
+
+	if (m_state != State::Finished)
+	{
+		prompt()->checkIfFinished();
+		return;
+	}
+
+	// Try to load this file now.
+	LDDocument* f = OpenDocument (filePath(), false, not isPrimary());
+
+	if (f == nullptr)
+		return;
+
+	// Iterate through this file and check for errors. If there's any that stems
+	// from unknown file references, try resolve that by downloading the reference.
+	// This is why downloading a part may end up downloading multiple files, as
+	// it resolves dependencies.
+	for (LDObject* obj : f->objects())
+	{
+		LDError* err = dynamic_cast<LDError*> (obj);
+
+		if (err == nullptr or err->fileReferenced().isEmpty())
+			continue;
+
+		QString dest = err->fileReferenced();
+		prompt()->downloadFromPartsTracker (dest);
+	}
+
+	prompt()->addFile (f);
+
+	if (isPrimary())
+	{
+		AddRecentFile (filePath());
+		prompt()->setPrimaryFile (f);
+	}
+
+	prompt()->checkIfFinished();
+}
+
+void PartDownloadRequest::updateDownloadProgress (int64 recv, int64 total)
+{
+	m_numBytesRead = recv;
+	m_numBytesTotal = total;
+	m_state = State::Downloading;
+	updateToTable();
+}
+
+void PartDownloadRequest::readFromNetworkReply()
+{
+	if (m_state == State::Failed)
+		return;
+
+	if (m_filePointer == nullptr)
+	{
+		m_filePath.replace ("\\", "/");
+
+		// We have already asked the user whether we can overwrite so we're good to go here.
+		m_filePointer = new QFile (filePath().toLocal8Bit());
+
+		if (not m_filePointer->open (QIODevice::WriteOnly))
+		{
+			Critical (format (tr ("Couldn't open %1 for writing: %2"), filePath(), strerror (errno)));
+			m_state = State::Failed;
+			networkReply()->abort();
+			updateToTable();
+			prompt()->checkIfFinished();
+			return;
+		}
+	}
+
+	m_filePointer->write (networkReply()->readAll());
+}
+
+bool PartDownloadRequest::isFinished() const
+{
+	return isOneOf (m_state, State::Finished, State::Failed);
+}
+
+void PartDownloadRequest::abort()
+{
+	networkReply()->abort();
+}
\ No newline at end of file
diff -r 23436e487f0c -r 09e1a3e272ec src/partdownloadrequest.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/partdownloadrequest.h	Sun Sep 06 16:57:22 2015 +0300
@@ -0,0 +1,73 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 - 2015 Teemu Piippo
+ *
+ *  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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include "main.h"
+
+class PartDownloader;
+
+class PartDownloadRequest : public QObject
+{
+	Q_OBJECT
+
+public:
+	enum class State
+	{
+		Requesting,
+		Downloading,
+		Finished,
+		Failed,
+	};
+
+	explicit PartDownloadRequest (QString url, QString dest, bool primary, PartDownloader* parent);
+	virtual ~PartDownloadRequest();
+
+	Q_SLOT void abort();
+	QString destination() const;
+	Q_SLOT void downloadFinished();
+	bool failed() const;
+	QString filePath() const;
+	bool isFinished() const;
+	bool isFirstUpdate() const;
+	bool isPrimary() const;
+	QNetworkReply* networkReply() const;
+	qint64 numBytesRead() const;
+	qint64 numBytesTotal() const;
+	PartDownloader* prompt() const;
+	Q_SLOT void readFromNetworkReply();
+	void setTableRow (int value);
+	int tableRow() const;
+	Q_SLOT void updateDownloadProgress (qint64 recv, qint64 total);
+	void updateToTable();
+	QString url() const;
+
+private:
+	int m_tableRow;
+	State m_state;
+	PartDownloader* m_prompt;
+	QString m_url;
+	QString m_destination;
+	QString m_filePath;
+	class QNetworkAccessManager* m_networkManager;
+	class QNetworkReply* m_networkReply;
+	bool m_isFirstUpdate;
+	bool m_isPrimary;
+	qint64 m_numBytesRead;
+	qint64 m_numBytesTotal;
+	QFile* m_filePointer;
+};
\ No newline at end of file
diff -r 23436e487f0c -r 09e1a3e272ec src/toolsets/filetoolset.cpp
--- a/src/toolsets/filetoolset.cpp	Sun Sep 06 16:42:57 2015 +0300
+++ b/src/toolsets/filetoolset.cpp	Sun Sep 06 16:57:22 2015 +0300
@@ -22,7 +22,7 @@
 #include "../glRenderer.h"
 #include "../ldDocument.h"
 #include "../mainwindow.h"
-#include "../partDownloader.h"
+#include "../partdownloader.h"
 #include "../primitives.h"
 #include "../dialogs/configdialog.h"
 #include "../dialogs/ldrawpathdialog.h"
diff -r 23436e487f0c -r 09e1a3e272ec ui/downloadfrom.ui
--- a/ui/downloadfrom.ui	Sun Sep 06 16:42:57 2015 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,141 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>DownloadFrom</class>
- <widget class="QDialog" name="DownloadFrom">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>546</width>
-    <height>405</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>Download from LDraw.org</string>
-  </property>
-  <layout class="QVBoxLayout" name="verticalLayout">
-   <item>
-    <widget class="QLabel" name="label">
-     <property name="font">
-      <font>
-       <pointsize>11</pointsize>
-       <weight>75</weight>
-       <bold>true</bold>
-      </font>
-     </property>
-     <property name="text">
-      <string>Download from LDraw.org</string>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignCenter</set>
-     </property>
-    </widget>
-   </item>
-   <item>
-    <layout class="QFormLayout" name="formLayout">
-     <property name="fieldGrowthPolicy">
-      <enum>QFormLayout::ExpandingFieldsGrow</enum>
-     </property>
-     <item row="0" column="0">
-      <widget class="QLabel" name="label_2">
-       <property name="text">
-        <string>Source:</string>
-       </property>
-      </widget>
-     </item>
-     <item row="0" column="1">
-      <widget class="QComboBox" name="source">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <item>
-        <property name="text">
-         <string>Parts tracker</string>
-        </property>
-       </item>
-       <item>
-        <property name="text">
-         <string>Custom URL</string>
-        </property>
-       </item>
-      </widget>
-     </item>
-     <item row="1" column="0">
-      <widget class="QLabel" name="fileNameLabel">
-       <property name="text">
-        <string>File name:</string>
-       </property>
-      </widget>
-     </item>
-     <item row="1" column="1">
-      <widget class="QLineEdit" name="fname"/>
-     </item>
-    </layout>
-   </item>
-   <item>
-    <widget class="QTableWidget" name="progress">
-     <property name="enabled">
-      <bool>false</bool>
-     </property>
-     <property name="editTriggers">
-      <set>QAbstractItemView::NoEditTriggers</set>
-     </property>
-     <property name="selectionMode">
-      <enum>QAbstractItemView::NoSelection</enum>
-     </property>
-     <attribute name="verticalHeaderVisible">
-      <bool>false</bool>
-     </attribute>
-     <column>
-      <property name="text">
-       <string>File</string>
-      </property>
-      <property name="font">
-       <font>
-        <weight>50</weight>
-        <bold>false</bold>
-       </font>
-      </property>
-     </column>
-     <column>
-      <property name="text">
-       <string>Status</string>
-      </property>
-     </column>
-    </widget>
-   </item>
-   <item>
-    <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="orientation">
-      <enum>Qt::Horizontal</enum>
-     </property>
-     <property name="standardButtons">
-      <set>QDialogButtonBox::Abort|QDialogButtonBox::Close</set>
-     </property>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <resources/>
- <connections>
-  <connection>
-   <sender>buttonBox</sender>
-   <signal>rejected()</signal>
-   <receiver>DownloadFrom</receiver>
-   <slot>reject()</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>322</x>
-     <y>312</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>286</x>
-     <y>274</y>
-    </hint>
-   </hints>
-  </connection>
- </connections>
-</ui>