From db604407bf26e500cf2d43174fc7ae2fd7e835dc Mon Sep 17 00:00:00 2001
From: Juergen Spitzmueller <spitz@lyx.org>
Date: Tue, 19 Mar 2019 06:59:24 +0100
Subject: [PATCH] Add new dialog for templates and examples

This lists all respective files from user, build and system directory
in a structured way and thus allows for easier access to them.

Fixes: #2396, #6861
---
 lib/ui/stdmenus.inc                  |   3 +-
 src/LyXAction.cpp                    |   7 +-
 src/frontends/qt4/GuiApplication.cpp |  14 +-
 src/frontends/qt4/GuiLyXFiles.cpp    | 405 +++++++++++++++++++++++++++
 src/frontends/qt4/GuiLyXFiles.h      |  76 +++++
 src/frontends/qt4/GuiView.cpp        |  13 +-
 src/frontends/qt4/GuiView.h          |   3 +-
 src/frontends/qt4/Makefile.am        |   3 +
 src/frontends/qt4/ui/LyXFilesUi.ui   | 150 ++++++++++
 9 files changed, 661 insertions(+), 13 deletions(-)
 create mode 100644 src/frontends/qt4/GuiLyXFiles.cpp
 create mode 100644 src/frontends/qt4/GuiLyXFiles.h
 create mode 100644 src/frontends/qt4/ui/LyXFilesUi.ui

diff --git a/lib/ui/stdmenus.inc b/lib/ui/stdmenus.inc
index b9f16b0404..a0c3bf2631 100644
--- a/lib/ui/stdmenus.inc
+++ b/lib/ui/stdmenus.inc
@@ -43,9 +43,10 @@ Menuset
 
 	Menu "file"
 		Item "New|N" "buffer-new"
-		Item "New from Template...|m" "buffer-new-template"
+		Item "New from Template...|m" "dialog-show lyxfiles templates"
 		Item "Open...|O" "file-open"
 		Submenu "Open Recent|t" "file_lastfiles"
+		Item "Open Example File...|p" "dialog-show lyxfiles examples"
 		Separator
 		Item "Close|C" "buffer-close"
 		Item "Close All" "buffer-close-all"
diff --git a/src/LyXAction.cpp b/src/LyXAction.cpp
index d6c821e55a..082d6080d4 100644
--- a/src/LyXAction.cpp
+++ b/src/LyXAction.cpp
@@ -714,8 +714,11 @@ void LyXAction::init()
  * \li Action: Creates a new buffer (that is, document) from a template.
  * \li Notion: Path for new files and templates can be set in Preferences dialog.
                Template will be asked for via Open-dialog.
- * \li Syntax: buffer-new-template [<FILE>]
- * \li Params: <FILE>: filename of created file with absolute path.
+ * \li Syntax: buffer-new-template [<FILE>] [<TEMPLATE FILE>]
+ * \li Params: <FILE>: filename of created file with absolute path. If empty
+ *                     or "newfile", a file with appropriate name is generated.
+ *             <TEMPLATE FILE>: filename of template with absolute path. If empty,
+ *                              a dialog is opened to select the new file.
  * \endvar
  */
 		{ LFUN_BUFFER_NEW_TEMPLATE,"buffer-new-template", NoBuffer, Buffer },
diff --git a/src/frontends/qt4/GuiApplication.cpp b/src/frontends/qt4/GuiApplication.cpp
index ac3e4e8f97..ea5241cdeb 100644
--- a/src/frontends/qt4/GuiApplication.cpp
+++ b/src/frontends/qt4/GuiApplication.cpp
@@ -1332,6 +1332,7 @@ bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 	case LFUN_DIALOG_SHOW: {
 		string const name = cmd.getArg(0);
 		return name == "aboutlyx"
+			|| name == "lyxfiles"
 			|| name == "prefs"
 			|| name == "texinfo"
 			|| name == "progress"
@@ -1655,26 +1656,29 @@ void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 		if (!current_view_
 		   || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 			createView(QString(), false); // keep hidden
-			current_view_->newDocument(to_utf8(cmd.argument()), false);
+			current_view_->newDocument(to_utf8(cmd.argument()));
 			current_view_->show();
 			setActiveWindow(current_view_);
 		} else {
-			current_view_->newDocument(to_utf8(cmd.argument()), false);
+			current_view_->newDocument(to_utf8(cmd.argument()));
 		}
 		break;
 
-	case LFUN_BUFFER_NEW_TEMPLATE:
+	case LFUN_BUFFER_NEW_TEMPLATE: {
+		string const file = (cmd.getArg(0) == "newfile") ? string() : cmd.getArg(0);
+		string const temp = cmd.getArg(1);
 		validateCurrentView();
 		if (!current_view_
 		   || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 			createView();
-			current_view_->newDocument(to_utf8(cmd.argument()), true);
+			current_view_->newDocument(file, temp, true);
 			if (!current_view_->documentBufferView())
 				current_view_->close();
 		} else {
-			current_view_->newDocument(to_utf8(cmd.argument()), true);
+			current_view_->newDocument(file, temp, true);
 		}
 		break;
+	}
 
 	case LFUN_FILE_OPEN: {
 		// FIXME: normally the code below is not needed, since getStatus makes sure that
diff --git a/src/frontends/qt4/GuiLyXFiles.cpp b/src/frontends/qt4/GuiLyXFiles.cpp
new file mode 100644
index 0000000000..4c1ff45e99
--- /dev/null
+++ b/src/frontends/qt4/GuiLyXFiles.cpp
@@ -0,0 +1,405 @@
+/**
+ * \file GuiLyXFiles.cpp
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author Jürgen Spitzmüller
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+#include <config.h>
+
+#include "GuiLyXFiles.h"
+#include "GuiApplication.h"
+#include "qt_helpers.h"
+
+#include "FileDialog.h"
+#include "Buffer.h"
+#include "BufferParams.h"
+#include "FuncRequest.h"
+#include "Language.h"
+#include "LyXRC.h"
+
+#include "support/environment.h"
+#include "support/filetools.h"
+#include "support/gettext.h"
+#include "support/lstrings.h"
+#include "support/Messages.h"
+#include "support/qstring_helpers.h"
+#include "support/Package.h"
+
+#include <QDirIterator>
+#include <QFileIconProvider>
+#include <QTreeWidget>
+
+using namespace std;
+using namespace lyx::support;
+
+namespace lyx {
+namespace frontend {
+
+namespace {
+
+void getFiles(QMap<QString, QString> & in, QString const type)
+{
+	// We look for lyx files in the subdirectory dir of
+	//   1) user_lyxdir
+	//   2) build_lyxdir (if not empty)
+	//   3) system_lyxdir
+	// in this order. Files with a given sub-hierarchy will
+	// only be listed once.
+	// We also consider i18n subdirectories and prefer them.
+	QStringList dirs;
+	QStringList relpaths;
+	QStringList langcodes;
+
+	// The three locations to look at.
+	string const user = addPath(package().user_support().absFileName(), fromqstr(type));
+	string const build = addPath(package().build_support().absFileName(), fromqstr(type));
+	string const system = addPath(package().system_support().absFileName(), fromqstr(type));
+
+	// If the LANGUAGE variable is set, use it as a fallback for searching for files.
+	string lang = getGuiMessages().language();
+	string const language = getEnv("LANGUAGE");
+	if (!language.empty())
+		lang += ":" + language;
+
+	// Get all supported languages (by code) in order to exclude those
+	// dirs later.
+	QAbstractItemModel * language_model = guiApp->languageModel();
+	for (int i = 0; i != language_model->rowCount(); ++i) {
+		QModelIndex index = language_model->index(i, 0);
+		Language const * lang =
+			languages.getLanguage(fromqstr(index.data(Qt::UserRole).toString()));
+		if (!lang)
+			continue;
+		string const code = lang->code();
+		langcodes << toqstr(code);
+		// Also store code without country code
+		string const shortcode = token(code, '_', 0);
+		if (shortcode != code)
+			langcodes << toqstr(shortcode);
+	}
+
+	for (auto const & l : getVectorFromString(lang, ":")) {
+		FileName tmp;
+		// First try with the full name
+		// `en' files are not in a subdirectory
+		if (l == "en")
+			break;
+		else {
+			dirs << toqstr(addPath(user, l));
+			dirs << toqstr(addPath(build, l));
+			dirs << toqstr(addPath(system, l));
+		}
+		// Then the name without country code
+		string const shortl = token(l, '_', 0);
+		if (shortl != l) {
+			dirs << toqstr(addPath(user, shortl));
+			dirs << toqstr(addPath(build, shortl));
+			dirs << toqstr(addPath(system, shortl));
+		}
+	}
+
+	// Next, search in the base path
+	dirs << toqstr(user)
+	     << toqstr(build)
+	     << toqstr(system);
+
+	for (int i = 0; i < dirs.size(); ++i) {
+		QString const dir = dirs.at(i);
+		QDirIterator it(dir, QDir::Files, QDirIterator::Subdirectories);
+		while (it.hasNext()) {
+			QString fn(QFile(it.next()).fileName());
+			if (!fn.endsWith(".lyx"))
+				continue;
+			QString const relpath = toqstr(makeRelPath(qstring_to_ucs4(fn),
+								   qstring_to_ucs4(dir)));
+			// <cat>/
+			int s = relpath.indexOf('/', 0);
+			QString cat = qt_("General");
+			if (s != -1) {
+				// <cat>/<subcat>/
+				cat = relpath.left(s);
+				int sc = relpath.indexOf('/', s + 1);
+				QString const subcat = (sc == -1) ?
+							QString() : relpath.mid(s + 1, sc - s - 1);
+				if (langcodes.contains(cat)
+				    && !langcodes.contains(dir.right(dir.lastIndexOf('/'))))
+					// Skip i18n dir
+					continue;
+				if (!subcat.isEmpty())
+					cat += '/' + subcat;
+			}
+			if (!relpaths.contains(relpath)) {
+				relpaths.append(relpath);
+				in.insert(fn, cat);
+			}
+		}
+	}
+}
+
+}// namespace anon
+
+
+GuiLyXFiles::GuiLyXFiles(GuiView & lv)
+	: GuiDialog(lv, "lyxfiles", qt_("New File From Template"))
+{
+	setupUi(this);
+
+	// The filter bar
+	filter_ = new FancyLineEdit(this);
+	filter_->setButtonPixmap(FancyLineEdit::Right, getPixmap("images/", "editclear", "svgz,png"));
+	filter_->setButtonVisible(FancyLineEdit::Right, true);
+	filter_->setButtonToolTip(FancyLineEdit::Right, qt_("Clear text"));
+	filter_->setAutoHideButton(FancyLineEdit::Right, true);
+	filter_->setPlaceholderText(qt_("All available labels"));
+	filter_->setToolTip(qt_("Enter string to filter the list of available labels"));
+#if (QT_VERSION < 0x050000)
+	connect(filter_, SIGNAL(downPressed()),
+		filesLW, SLOT(setFocus()));
+#else
+	connect(filter_, &FancyLineEdit::downPressed,
+		filesLW, [=](){ focusAndHighlight(filesLW); });
+#endif
+
+	filterBarL->addWidget(filter_, 0);
+	findKeysLA->setBuddy(filter_);
+
+	connect(buttonBox, SIGNAL(clicked(QAbstractButton *)),
+		this, SLOT(slotButtonBox(QAbstractButton *)));
+
+	connect(filesLW, SIGNAL(itemClicked(QTreeWidgetItem *, int)),
+		this, SLOT(changed_adaptor()));
+	connect(filesLW, SIGNAL(itemSelectionChanged()),
+		this, SLOT(changed_adaptor()));
+	connect(filter_, SIGNAL(textEdited(QString)),
+		this, SLOT(filterLabels()));
+	connect(filter_, SIGNAL(rightButtonClicked()),
+		this, SLOT(resetFilter()));
+
+	bc().setPolicy(ButtonPolicy::OkApplyCancelPolicy);
+	bc().setOK(buttonBox->button(QDialogButtonBox::Open));
+	bc().setCancel(buttonBox->button(QDialogButtonBox::Cancel));
+
+	//filesLW->setViewMode(QListView::ListMode);
+	filesLW->setIconSize(QSize(22, 22));
+
+	fileTypeCO->addItem(qt_("Templates"), toqstr("templates"));
+	fileTypeCO->addItem(qt_("Examples"), toqstr("examples"));
+
+	setFocusProxy(filter_);
+}
+
+
+void GuiLyXFiles::changed_adaptor()
+{
+	changed();
+}
+
+
+void GuiLyXFiles::on_fileTypeCO_activated(int)
+{
+	updateContents();
+}
+
+
+void GuiLyXFiles::on_filesLW_itemDoubleClicked(QTreeWidgetItem *, int)
+{
+	applyView();
+	dispatchParams();
+	close();
+}
+
+
+void GuiLyXFiles::on_browsePB_pressed()
+{
+	bool const examples = (type_ == "examples");
+	FileDialog dlg(qt_("Select template file"));
+	dlg.setButton1(qt_("D&ocuments"), toqstr(lyxrc.document_path));
+	if (examples)
+		dlg.setButton2(qt_("&Examples"), toqstr(lyxrc.example_path));
+	else
+		dlg.setButton2(qt_("&Templates"), toqstr(lyxrc.template_path));
+
+	FileDialog::Result result = dlg.open(examples ? toqstr(lyxrc.example_path)
+						      : toqstr(lyxrc.template_path),
+				 QStringList(qt_("LyX Documents (*.lyx)")));
+
+	if (result.first != FileDialog::Later && !result.second.isEmpty()) {
+		file_ = toqstr(FileName(fromqstr(result.second)).absFileName());
+		dispatchParams();
+		close();
+	}
+}
+
+
+void GuiLyXFiles::updateContents()
+{
+	QString type = fileTypeCO->itemData(fileTypeCO->currentIndex()).toString();
+	QMap<QString, QString> files;
+	getFiles(files, type);
+
+	filesLW->clear();
+	QFileIconProvider iconprovider;
+	QStringList cats;
+	QMap<QString, QString>::const_iterator it = files.constBegin();
+	QFont capfont;
+	capfont.setBold(true);
+	while (it != files.constEnd()) {
+		QFileInfo const info = QFileInfo(it.key());
+		QString cat = it.value();
+		QString subcat;
+		QString catsave;
+		if (cat.contains('/')) {
+			catsave = cat;
+			cat = catsave.left(catsave.indexOf('/'));
+			subcat = toqstr(translateIfPossible(
+					qstring_to_ucs4(catsave.mid(
+						catsave.indexOf('/') + 1).replace('_', ' '))));
+		}
+		cat =  toqstr(translateIfPossible(qstring_to_ucs4(cat.replace('_', ' '))));
+		QTreeWidgetItem * catItem = new QTreeWidgetItem();
+		if (!cats.contains(cat)) {
+			catItem->setText(0, cat);
+			catItem->setFont(0, capfont);
+			filesLW->insertTopLevelItem(0, catItem);
+			catItem->setExpanded(true);
+			cats << cat;
+		} else
+			catItem = filesLW->findItems(cat, Qt::MatchExactly).first();
+		QTreeWidgetItem * item = new QTreeWidgetItem();
+		QString const filename = info.fileName();
+		QString const guiname =
+				toqstr(translateIfPossible(
+					       qstring_to_ucs4(filename.left(filename.lastIndexOf(".lyx")).replace('_', ' '))));
+		item->setIcon(0, iconprovider.icon(info));
+		item->setData(0, Qt::UserRole, info.filePath());
+		item->setData(0, Qt::DisplayRole, guiname);
+		item->setData(0, Qt::ToolTipRole, info.filePath());
+		if (subcat.isEmpty())
+			catItem->addChild(item);
+		else {
+			QTreeWidgetItem * subcatItem = new QTreeWidgetItem();
+			if (cats.contains(catsave)) {
+				QList<QTreeWidgetItem *> pcats = filesLW->findItems(cat, Qt::MatchExactly);
+				for (int iit = 0; iit < pcats.size(); ++iit) {
+					for (int cit = 0; cit < pcats.at(iit)->childCount(); ++cit) {
+						if (pcats.at(iit)->child(cit)->text(0) == subcat) {
+							subcatItem = pcats.at(iit)->child(cit);
+							break;
+						}
+					}
+				}
+			} else {
+				subcatItem->setText(0, subcat);
+				cats << catsave;
+			}
+			subcatItem->addChild(item);
+			catItem->addChild(subcatItem);
+		}
+		++it;
+	}
+	filesLW->sortItems(0, Qt::AscendingOrder);
+	// redo filter
+	filterLabels();
+}
+
+
+void GuiLyXFiles::slotButtonBox(QAbstractButton * button)
+{
+	switch (buttonBox->standardButton(button)) {
+	case QDialogButtonBox::Open:
+		slotOK();
+		break;
+	case QDialogButtonBox::Cancel:
+		slotClose();
+		break;
+	default:
+		break;
+	}
+}
+
+
+void GuiLyXFiles::filterLabels()
+{
+	Qt::CaseSensitivity cs = csFindCB->isChecked() ?
+		Qt::CaseSensitive : Qt::CaseInsensitive;
+	QTreeWidgetItemIterator it(filesLW);
+	while (*it) {
+		(*it)->setHidden(
+			(*it)->childCount() == 0
+			&& !(*it)->text(0).contains(filter_->text(), cs)
+		);
+		++it;
+	}
+}
+
+
+void GuiLyXFiles::resetFilter()
+{
+	filter_->setText(QString());
+	filterLabels();
+}
+
+
+void GuiLyXFiles::applyView()
+{
+	file_ = filesLW->currentItem()->data(0, Qt::UserRole).toString();
+}
+
+
+bool GuiLyXFiles::isValid()
+{
+	return filesLW->currentItem() && filesLW->currentItem()->isSelected();
+}
+
+
+bool GuiLyXFiles::initialiseParams(string const & type)
+{
+	type_ = type.empty() ? toqstr("templates") : toqstr(type);
+	paramsToDialog(type_);
+	return true;
+}
+
+
+void GuiLyXFiles::paramsToDialog(QString const & command)
+{
+	if (!command.isEmpty()) {
+		int i = fileTypeCO->findData(command);
+		if (i != -1)
+			fileTypeCO->setCurrentIndex(i);
+	}
+	if (command == "examples")
+		setTitle(qt_("Open Example File"));
+	else {
+		setTitle(qt_("New File From Template"));
+	}
+
+	bc().setValid(isValid());
+}
+
+
+void GuiLyXFiles::dispatchParams()
+{
+	if (file_.isEmpty())
+		return;
+
+	string arg;
+	if (type_ == "templates")
+		arg = "newfile ";
+	arg += fromqstr(file_);
+	FuncCode const lfun = (type_ == toqstr("examples")) ?
+		LFUN_FILE_OPEN : getLfun();
+
+	dispatch(FuncRequest(lfun, arg));
+}
+
+Dialog * createGuiLyXFiles(GuiView & lv) { return new GuiLyXFiles(lv); }
+
+
+} // namespace frontend
+} // namespace lyx
+
+#include "moc_GuiLyXFiles.cpp"
diff --git a/src/frontends/qt4/GuiLyXFiles.h b/src/frontends/qt4/GuiLyXFiles.h
new file mode 100644
index 0000000000..05eff9ff68
--- /dev/null
+++ b/src/frontends/qt4/GuiLyXFiles.h
@@ -0,0 +1,76 @@
+// -*- C++ -*-
+/**
+ * \file GuiLyXFiles.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author Jürgen Spitzmüller
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+#ifndef GUILYXFILES_H
+#define GUILYXFILES_H
+
+#include "GuiDialog.h"
+#include "FancyLineEdit.h"
+#include "ui_LyXFilesUi.h"
+
+class QListWidgetItem;
+
+namespace lyx {
+
+class Format;
+
+namespace frontend {
+
+class GuiLyXFiles : public GuiDialog, public Ui::LyXFilesUi
+{
+	Q_OBJECT
+
+public:
+	GuiLyXFiles(GuiView & lv);
+
+private Q_SLOTS:
+	void changed_adaptor();
+	void on_fileTypeCO_activated(int);
+	void on_filesLW_itemDoubleClicked(QTreeWidgetItem *, int);
+	void on_browsePB_pressed();
+	void slotButtonBox(QAbstractButton *);
+	void filterLabels();
+	void resetFilter();
+
+private:
+	///
+	bool isValid();
+	/// Apply from dialog
+	void applyView();
+	/// Update the dialog
+	void updateContents();
+
+	///
+	bool initialiseParams(std::string const & data);
+	///
+	void paramsToDialog(QString const & command);
+	///
+	void clearParams() {}
+	///
+	void dispatchParams();
+	///
+	bool isBufferDependent() const { return false; }
+	///
+	FuncCode getLfun() const { return LFUN_BUFFER_NEW_TEMPLATE; }
+
+private:
+	/// contains the search box
+	FancyLineEdit * filter_;
+	///
+	QString type_;
+	///
+	QString file_;
+};
+
+} // namespace frontend
+} // namespace lyx
+
+#endif // GUILYXFILES_H
diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index dcfba88c53..6624d81362 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -2098,6 +2098,7 @@ bool GuiView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 		if (!doc_buffer)
 			enable = name == "aboutlyx"
 				|| name == "file" //FIXME: should be removed.
+				|| name == "lyxfiles"
 				|| name == "prefs"
 				|| name == "texinfo"
 				|| name == "progress"
@@ -2566,7 +2567,8 @@ void GuiView::importDocument(string const & argument)
 }
 
 
-void GuiView::newDocument(string const & filename, bool from_template)
+void GuiView::newDocument(string const & filename, string templatefile,
+			  bool from_template)
 {
 	FileName initpath(lyxrc.document_path);
 	if (documentBufferView()) {
@@ -2576,9 +2578,9 @@ void GuiView::newDocument(string const & filename, bool from_template)
 			initpath = trypath;
 	}
 
-	string templatefile;
 	if (from_template) {
-		templatefile = selectTemplateFile().absFileName();
+		if (templatefile.empty())
+			templatefile =  selectTemplateFile().absFileName();
 		if (templatefile.empty())
 			return;
 	}
@@ -4545,7 +4547,7 @@ char const * const dialognames[] = {
 "citation", "compare", "comparehistory", "document", "errorlist", "ert",
 "external", "file", "findreplace", "findreplaceadv", "float", "graphics",
 "href", "include", "index", "index_print", "info", "listings", "label", "line",
-"log", "mathdelimiter", "mathmatrix", "mathspace", "nomenclature",
+"log", "lyxfiles", "mathdelimiter", "mathmatrix", "mathspace", "nomenclature",
 "nomencl_print", "note", "paragraph", "phantom", "prefs", "ref",
 "sendto", "space", "spellchecker", "symbols", "tabular", "tabularcreate",
 "thesaurus", "texinfo", "toc", "view-source", "vspace", "wrap", "progress"};
@@ -4741,6 +4743,7 @@ Dialog * createGuiInclude(GuiView & lv);
 Dialog * createGuiIndex(GuiView & lv);
 Dialog * createGuiListings(GuiView & lv);
 Dialog * createGuiLog(GuiView & lv);
+Dialog * createGuiLyXFiles(GuiView & lv);
 Dialog * createGuiMathMatrix(GuiView & lv);
 Dialog * createGuiNote(GuiView & lv);
 Dialog * createGuiParagraph(GuiView & lv);
@@ -4811,6 +4814,8 @@ Dialog * GuiView::build(string const & name)
 		return createGuiListings(*this);
 	if (name == "log")
 		return createGuiLog(*this);
+	if (name == "lyxfiles")
+		return createGuiLyXFiles(*this);
 	if (name == "mathdelimiter")
 		return createGuiDelimiter(*this);
 	if (name == "mathmatrix")
diff --git a/src/frontends/qt4/GuiView.h b/src/frontends/qt4/GuiView.h
index 2d0ad0097a..3c5041662f 100644
--- a/src/frontends/qt4/GuiView.h
+++ b/src/frontends/qt4/GuiView.h
@@ -105,7 +105,8 @@ public:
 	BufferView const * documentBufferView() const;
 
 	void newDocument(std::string const & filename,
-		bool fromTemplate);
+			 std::string templatefile = std::string(),
+			 bool fromTemplate = false);
 
 	/// display a message in the view
 	/// could be called from any thread
diff --git a/src/frontends/qt4/Makefile.am b/src/frontends/qt4/Makefile.am
index 4ffb351607..e2e3e1ce5e 100644
--- a/src/frontends/qt4/Makefile.am
+++ b/src/frontends/qt4/Makefile.am
@@ -109,6 +109,7 @@ SOURCEFILES = \
 	GuiLine.cpp \
 	GuiListings.cpp \
 	GuiLog.cpp \
+	GuiLyXFiles.cpp \
 	GuiMathMatrix.cpp \
 	GuiNomenclature.cpp \
 	GuiNote.cpp \
@@ -219,6 +220,7 @@ MOCHEADER = \
 	GuiLine.h \
 	GuiListings.h \
 	GuiLog.h \
+	GuiLyXFiles.h \
 	GuiMathMatrix.h \
 	GuiNomenclature.h \
 	GuiNote.h \
@@ -304,6 +306,7 @@ UIFILES = \
 	ListingsSettingsUi.ui \
 	LocalLayoutUi.ui \
 	LogUi.ui \
+	LyXFilesUi.ui \
 	MarginsUi.ui \
 	MasterChildUi.ui \
 	MathMatrixUi.ui \
diff --git a/src/frontends/qt4/ui/LyXFilesUi.ui b/src/frontends/qt4/ui/LyXFilesUi.ui
new file mode 100644
index 0000000000..5cae863a5e
--- /dev/null
+++ b/src/frontends/qt4/ui/LyXFilesUi.ui
@@ -0,0 +1,150 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>LyXFilesUi</class>
+ <widget class="QDialog" name="LyXFilesUi">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>381</width>
+    <height>474</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string/>
+  </property>
+  <property name="sizeGripEnabled">
+   <bool>true</bool>
+  </property>
+  <layout class="QGridLayout" name="gridLayout_2">
+   <item row="0" column="0">
+    <layout class="QGridLayout" name="gridLayout">
+     <item row="0" column="0">
+      <widget class="QLabel" name="filesTypeLA">
+       <property name="text">
+        <string>&amp;Type:</string>
+       </property>
+       <property name="buddy">
+        <cstring>fileTypeCO</cstring>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1" colspan="2">
+      <widget class="QComboBox" name="fileTypeCO">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="0" colspan="2">
+      <widget class="QLabel" name="findKeysLA">
+       <property name="text">
+        <string>&amp;Filter:</string>
+       </property>
+       <property name="alignment">
+        <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="2">
+      <layout class="QVBoxLayout" name="verticalLayout_2">
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_3">
+         <item>
+          <layout class="QHBoxLayout" name="filterBarL"/>
+         </item>
+         <item>
+          <widget class="QCheckBox" name="csFindCB">
+           <property name="toolTip">
+            <string>Filter case-sensitively</string>
+           </property>
+           <property name="text">
+            <string>Case Sensiti&amp;ve</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+   <item row="1" column="0">
+    <widget class="QTreeWidget" name="filesLW">
+     <property name="rootIsDecorated">
+      <bool>true</bool>
+     </property>
+     <property name="itemsExpandable">
+      <bool>true</bool>
+     </property>
+     <attribute name="headerVisible">
+      <bool>false</bool>
+     </attribute>
+     <column>
+      <property name="text">
+       <string notr="true">1</string>
+      </property>
+     </column>
+    </widget>
+   </item>
+   <item row="2" column="0">
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <spacer name="horizontalSpacer">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="browsePB">
+       <property name="text">
+        <string>&amp;Browse...</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item row="3" column="0">
+    <layout class="QHBoxLayout">
+     <property name="spacing">
+      <number>6</number>
+     </property>
+     <property name="leftMargin">
+      <number>0</number>
+     </property>
+     <property name="topMargin">
+      <number>0</number>
+     </property>
+     <property name="rightMargin">
+      <number>0</number>
+     </property>
+     <property name="bottomMargin">
+      <number>0</number>
+     </property>
+     <item>
+      <widget class="QDialogButtonBox" name="buttonBox">
+       <property name="standardButtons">
+        <set>QDialogButtonBox::Cancel|QDialogButtonBox::Open</set>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <includes>
+  <include location="local">qt_i18n.h</include>
+ </includes>
+ <resources/>
+ <connections/>
+</ui>
-- 
2.39.5