/**
 * \file lyxfunc.C
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Alfredo Braunstein
 * \author Lars Gullik Bjønnes
 * \author Jean-Marc Lasgouttes
 * \author Angus Leeming
 * \author John Levon
 * \author André Pönitz
 * \author Allan Rae
 * \author Dekel Tsur
 * \author Martin Vermeer
 * \author Jürgen Vigna
 *
 * Full author contact details are available in file CREDITS.
 */

#include <config.h>

#include "lyxfunc.h"

#include "BranchList.h"
#include "buffer.h"
#include "buffer_funcs.h"
#include "bufferlist.h"
#include "bufferparams.h"
#include "BufferView.h"
#include "cursor.h"
#include "CutAndPaste.h"
#include "debug.h"
#include "dispatchresult.h"
#include "encoding.h"
#include "errorlist.h"
#include "exporter.h"
#include "format.h"
#include "funcrequest.h"
#include "gettext.h"
#include "importer.h"
#include "insetiterator.h"
#include "intl.h"
#include "kbmap.h"
#include "language.h"
#include "LColor.h"
#include "lyx_cb.h"
#include "LyXAction.h"
#include "lyxfind.h"
#include "lyxlex.h"
#include "lyxrc.h"
#include "lyxrow.h"
#include "lyxserver.h"
#include "lyxtextclasslist.h"
#include "lyxvc.h"
#include "paragraph.h"
#include "pariterator.h"
#include "ParagraphParameters.h"
#include "undo.h"

#include "insets/insetbox.h"
#include "insets/insetbranch.h"
#include "insets/insetcommand.h"
#include "insets/insetert.h"
#include "insets/insetexternal.h"
#include "insets/insetfloat.h"
#include "insets/insetgraphics.h"
#include "insets/insetnote.h"
#include "insets/insettabular.h"
#include "insets/insetvspace.h"
#include "insets/insetwrap.h"

#include "frontends/Alert.h"
#include "frontends/Dialogs.h"
#include "frontends/FileDialog.h"
#include "frontends/lyx_gui.h"
#include "frontends/LyXKeySym.h"
#include "frontends/LyXView.h"
#include "frontends/Menubar.h"
#include "frontends/Toolbars.h"

#include "support/filefilterlist.h"
#include "support/FileInfo.h"
#include "support/filetools.h"
#include "support/forkedcontr.h"
#include "support/lstrings.h"
#include "support/path.h"
#include "support/path_defines.h"
#include "support/systemcall.h"
#include "support/tostr.h"
#include "support/os.h"

#include <sstream>

using bv_funcs::freefont2string;

using lyx::support::AddName;
using lyx::support::AddPath;
using lyx::support::bformat;
using lyx::support::ChangeExtension;
using lyx::support::contains;
using lyx::support::FileFilterList;
using lyx::support::FileInfo;
using lyx::support::FileSearch;
using lyx::support::ForkedcallsController;
using lyx::support::i18nLibFileSearch;
using lyx::support::IsDirWriteable;
using lyx::support::IsFileReadable;
using lyx::support::isStrInt;
using lyx::support::MakeAbsPath;
using lyx::support::MakeDisplayPath;
using lyx::support::Path;
using lyx::support::QuoteName;
using lyx::support::rtrim;
using lyx::support::split;
using lyx::support::strToInt;
using lyx::support::strToUnsignedInt;
using lyx::support::subst;
using lyx::support::system_lyxdir;
using lyx::support::Systemcall;
using lyx::support::token;
using lyx::support::trim;
using lyx::support::user_lyxdir;
using lyx::support::prefixIs;
using lyx::support::os::getTmpDir;

using std::endl;
using std::make_pair;
using std::pair;
using std::string;
using std::istringstream;

namespace biblio = lyx::biblio;


extern BufferList bufferlist;
extern LyXServer * lyxserver;
extern bool selection_possible;

extern boost::scoped_ptr<kb_keymap> toplevel_keymap;

// (alkis)
extern tex_accent_struct get_accent(kb_action action);


LyXFunc::LyXFunc(LyXView * lv)
	: owner(lv),
	encoded_last_key(0),
	keyseq(toplevel_keymap.get(), toplevel_keymap.get()),
	cancel_meta_seq(toplevel_keymap.get(), toplevel_keymap.get()),
	meta_fake_bit(key_modifier::none)
{
}


void LyXFunc::handleKeyFunc(kb_action action)
{
	char c = encoded_last_key;

	if (keyseq.length()) {
		c = 0;
	}

	owner->getIntl().getTransManager()
		.deadkey(c, get_accent(action).accent, view()->getLyXText());
	// Need to clear, in case the minibuffer calls these
	// actions
	keyseq.clear();
	// copied verbatim from do_accent_char
	view()->cursor().resetAnchor();
	view()->update();
}


void LyXFunc::processKeySym(LyXKeySymPtr keysym, key_modifier::state state)
{
	lyxerr[Debug::KEY] << "KeySym is " << keysym->getSymbolName() << endl;

	// Do nothing if we have nothing (JMarc)
	if (!keysym->isOK()) {
		lyxerr[Debug::KEY] << "Empty kbd action (probably composing)"
				   << endl;
		return;
	}

	if (keysym->isModifier()) {
		lyxerr[Debug::KEY] << "isModifier true" << endl;
		return;
	}

	Encoding const * encoding = view()->cursor().getEncoding();

	encoded_last_key = keysym->getISOEncoded(encoding ? encoding->Name() : "");

	// Do a one-deep top-level lookup for
	// cancel and meta-fake keys. RVDK_PATCH_5
	cancel_meta_seq.reset();

	FuncRequest func = cancel_meta_seq.addkey(keysym, state);
	lyxerr[Debug::KEY] << "action first set to [" << func.action << ']' << endl;

	// When not cancel or meta-fake, do the normal lookup.
	// Note how the meta_fake Mod1 bit is OR-ed in and reset afterwards.
	// Mostly, meta_fake_bit = key_modifier::none. RVDK_PATCH_5.
	if ((func.action != LFUN_CANCEL) && (func.action != LFUN_META_FAKE)) {
		// remove Caps Lock and Mod2 as a modifiers
		func = keyseq.addkey(keysym, (state | meta_fake_bit));
		lyxerr[Debug::KEY] << "action now set to ["
			<< func.action << ']' << endl;
	}

	// Dont remove this unless you know what you are doing.
	meta_fake_bit = key_modifier::none;

	// can this happen now ?
	if (func.action == LFUN_NOACTION) {
		func = FuncRequest(LFUN_PREFIX);
	}

	if (lyxerr.debugging(Debug::KEY)) {
		lyxerr << "Key [action="
		       << func.action << "]["
		       << keyseq.print() << ']'
		       << endl;
	}

	// already here we know if it any point in going further
	// why not return already here if action == -1 and
	// num_bytes == 0? (Lgb)

	if (keyseq.length() > 1) {
		owner->message(keyseq.print());
	}


	// Maybe user can only reach the key via holding down shift.
	// Let's see. But only if shift is the only modifier
	if (func.action == LFUN_UNKNOWN_ACTION &&
	    state == key_modifier::shift) {
		lyxerr[Debug::KEY] << "Trying without shift" << endl;
		func = keyseq.addkey(keysym, key_modifier::none);
		lyxerr[Debug::KEY] << "Action now " << func.action << endl;
	}

	if (func.action == LFUN_UNKNOWN_ACTION) {
		// Hmm, we didn't match any of the keysequences. See
		// if it's normal insertable text not already covered
		// by a binding
		if (keysym->isText() && keyseq.length() == 1) {
			lyxerr[Debug::KEY] << "isText() is true, inserting." << endl;
			func = FuncRequest(LFUN_SELFINSERT);
		} else {
			lyxerr[Debug::KEY] << "Unknown, !isText() - giving up" << endl;
			owner->message(_("Unknown function."));
			return;
		}
	}

	if (func.action == LFUN_SELFINSERT) {
		if (encoded_last_key != 0) {
			string arg(1, encoded_last_key);
			dispatch(FuncRequest(LFUN_SELFINSERT, arg));
			lyxerr[Debug::KEY]
				<< "SelfInsert arg[`" << arg << "']" << endl;
		}
	} else {
		dispatch(func);
	}
}


FuncStatus LyXFunc::getStatus(FuncRequest const & cmd) const
{
	//lyxerr << "LyXFunc::getStatus: cmd: " << cmd << endl;
	FuncStatus flag;
	LCursor & cur = view()->cursor();

	/* In LyX/Mac, when a dialog is open, the menus of the
	   application can still be accessed without giving focus to
	   the main window. In this case, we want to disable the menu
	   entries that are buffer-related.
	*/
	Buffer * buf;
	if (cmd.origin == FuncRequest::UI && !owner->hasFocus())
		buf = 0;
	else
		buf = owner->buffer();

	if (cmd.action == LFUN_NOACTION) {
		flag.message(N_("Nothing to do"));
		flag.enabled(false);
		return flag;
	}

	switch (cmd.action) {
	case LFUN_UNKNOWN_ACTION:
#ifndef HAVE_LIBAIKSAURUS
	case LFUN_THESAURUS_ENTRY:
#endif
		flag.unknown(true);
		flag.enabled(false);
		break;
	default:
		flag |= lyx_gui::getStatus(cmd);
	}

	if (flag.unknown()) {
		flag.message(N_("Unknown action"));
		return flag;
	}

	// the default error message if we disable the command
	flag.message(N_("Command disabled"));
	if (!flag.enabled())
		return flag;

	// Check whether we need a buffer
	if (!lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer) && !buf) {
		// no, exit directly
		flag.message(N_("Command not allowed with"
				    "out any document open"));
		flag.enabled(false);
		return flag;
	}

	// I would really like to avoid having this switch and rather try to
	// encode this in the function itself.
	// -- And I'd rather let an inset decide which LFUNs it is willing
	// to handle (Andre')
	bool enable = true;
	switch (cmd.action) {
	case LFUN_TOOLTIPS_TOGGLE:
		flag.setOnOff(owner->getDialogs().tooltipsEnabled());
		break;

	case LFUN_READ_ONLY_TOGGLE:
		flag.setOnOff(buf->isReadonly());
		break;

	case LFUN_SWITCHBUFFER:
		// toggle on the current buffer, but do not toggle off
		// the other ones (is that a good idea?)
		if (cmd.argument == buf->fileName())
			flag.setOnOff(true);
		break;

	case LFUN_EXPORT:
		enable = cmd.argument == "custom"
			|| Exporter::IsExportable(*buf, cmd.argument);
		break;
	case LFUN_CUT:
	case LFUN_COPY:
		enable = cur.selection();
		break;

	case LFUN_RUNCHKTEX:
		enable = buf->isLatex() && lyxrc.chktex_command != "none";
		break;

	case LFUN_BUILDPROG:
		enable = Exporter::IsExportable(*buf, "program");
		break;

	case LFUN_LAYOUT_TABULAR:
		enable = cur.innerInsetOfType(InsetBase::TABULAR_CODE);
		break;

	case LFUN_LAYOUT:
	case LFUN_LAYOUT_PARAGRAPH:
		enable = !cur.inset().forceDefaultParagraphs(&cur.inset());
		break;

	case LFUN_VC_REGISTER:
		enable = !buf->lyxvc().inUse();
		break;
	case LFUN_VC_CHECKIN:
		enable = buf->lyxvc().inUse() && !buf->isReadonly();
		break;
	case LFUN_VC_CHECKOUT:
		enable = buf->lyxvc().inUse() && buf->isReadonly();
		break;
	case LFUN_VC_REVERT:
	case LFUN_VC_UNDO:
		enable = buf->lyxvc().inUse();
		break;
	case LFUN_MENURELOAD:
		enable = !buf->isUnnamed() && !buf->isClean();
		break;


	case LFUN_INSET_SETTINGS: {
		enable = false;
		if (!cur.size())
			break;
		UpdatableInset * inset = cur.inset().asUpdatableInset();
		lyxerr << "inset: " << inset << endl;
		if (!inset)
			break;

		InsetOld::Code code = inset->lyxCode();
		switch (code) {
			case InsetOld::TABULAR_CODE:
				enable = cmd.argument == "tabular";
				break;
			case InsetOld::ERT_CODE:
				enable = cmd.argument == "ert";
				break;
			case InsetOld::FLOAT_CODE:
				enable = cmd.argument == "float";
				break;
			case InsetOld::WRAP_CODE:
				enable = cmd.argument == "wrap";
				break;
			case InsetOld::NOTE_CODE:
				enable = cmd.argument == "note";
				break;
			case InsetOld::BRANCH_CODE:
				enable = cmd.argument == "branch";
				break;
			case InsetOld::BOX_CODE:
				enable = cmd.argument == "box";
				break;
			default:
				break;
		}
		break;
	}

	case LFUN_DIALOG_SHOW: {
		string const name = cmd.getArg(0);
		if (!buf)
			enable = name == "aboutlyx"
				|| name == "file"
				|| name == "forks"
				|| name == "prefs"
				|| name == "texinfo";
		else if (name == "print")
			enable = Exporter::IsExportable(*buf, "dvi")
				&& lyxrc.print_command != "none";
		else if (name == "character")
			enable = cur.inset().lyxCode() != InsetOld::ERT_CODE;
		else if (name == "vclog")
			enable = buf->lyxvc().inUse();
		else if (name == "latexlog")
			enable = IsFileReadable(buf->getLogName().second);
		break;
	}

	case LFUN_DIALOG_UPDATE: {
		string const name = cmd.getArg(0);
		if (!buf)
			enable = name == "prefs";
		break;
	}

	// this one is difficult to get right. As a half-baked
	// solution, we consider only the first action of the sequence
	case LFUN_SEQUENCE: {
		// argument contains ';'-terminated commands
		string const firstcmd = token(cmd.argument, ';', 0);
		FuncRequest func(lyxaction.lookupFunc(firstcmd));
		func.origin = cmd.origin;
		flag = getStatus(func);
	}

	case LFUN_MENUNEW:
	case LFUN_MENUNEWTMPLT:
	case LFUN_WORDFINDFORWARD:
	case LFUN_WORDFINDBACKWARD:
	case LFUN_PREFIX:
	case LFUN_EXEC_COMMAND:
	case LFUN_CANCEL:
	case LFUN_META_FAKE:
	case LFUN_CLOSEBUFFER:
	case LFUN_MENUWRITE:
	case LFUN_WRITEAS:
	case LFUN_UPDATE:
	case LFUN_PREVIEW:
	case LFUN_IMPORT:
	case LFUN_QUIT:
	case LFUN_TOCVIEW:
	case LFUN_AUTOSAVE:
	case LFUN_RECONFIGURE:
	case LFUN_HELP_OPEN:
	case LFUN_FILE_NEW:
	case LFUN_FILE_OPEN:
	case LFUN_DROP_LAYOUTS_CHOICE:
	case LFUN_MENU_OPEN_BY_NAME:
	case LFUN_GETNAME:
	case LFUN_NOTIFY:
	case LFUN_GOTOFILEROW:
	case LFUN_GOTO_PARAGRAPH:
	case LFUN_DIALOG_SHOW_NEW_INSET:
	case LFUN_DIALOG_SHOW_NEXT_INSET:
	case LFUN_DIALOG_HIDE:
	case LFUN_DIALOG_DISCONNECT_INSET:
	case LFUN_CHILDOPEN:
	case LFUN_TOGGLECURSORFOLLOW:
	case LFUN_KMAP_OFF:
	case LFUN_KMAP_PRIM:
	case LFUN_KMAP_SEC:
	case LFUN_KMAP_TOGGLE:
	case LFUN_REPEAT:
	case LFUN_EXPORT_CUSTOM:
	case LFUN_PRINT:
	case LFUN_SAVEPREFERENCES:
	case LFUN_SCREEN_FONT_UPDATE:
	case LFUN_SET_COLOR:
	case LFUN_MESSAGE:
	case LFUN_EXTERNAL_EDIT:
	case LFUN_GRAPHICS_EDIT:
	case LFUN_ALL_INSETS_TOGGLE:
	case LFUN_LANGUAGE_BUFFER:
	case LFUN_TEXTCLASS_APPLY:
	case LFUN_TEXTCLASS_LOAD:
	case LFUN_SAVE_AS_DEFAULT:
	case LFUN_BUFFERPARAMS_APPLY:
	case LFUN_LYXRC_APPLY:
	case LFUN_NEXTBUFFER:
	case LFUN_PREVIOUSBUFFER:
		// these are handled in our dispatch()
		break;

	default:

		if (!cur.getStatus(cmd, flag))
			flag = view()->getStatus(cmd);
	}

	if (!enable)
		flag.enabled(false);

	// Can we use a readonly buffer?
	if (buf && buf->isReadonly()
	    && !lyxaction.funcHasFlag(cmd.action, LyXAction::ReadOnly)
	    && !lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer)) {
		flag.message(N_("Document is read-only"));
		flag.enabled(false);
	}

	//lyxerr << "LyXFunc::getStatus: got: " << flag.enabled() << endl;
	return flag;
}


namespace {

bool ensureBufferClean(BufferView * bv)
{
	Buffer & buf = *bv->buffer();
	if (buf.isClean())
		return true;

	string const file = MakeDisplayPath(buf.fileName(), 30);
	string text = bformat(_("The document %1$s has unsaved "
				"changes.\n\nDo you want to save "
				"the document?"), file);
	int const ret = Alert::prompt(_("Save changed document?"),
				      text, 0, 1, _("&Save"),
				      _("&Cancel"));

	if (ret == 0)
		bv->owner()->dispatch(FuncRequest(LFUN_MENUWRITE));

	return buf.isClean();
}


void showPrintError(string const & name)
{
	string str = bformat(_("Could not print the document %1$s.\n"
			       "Check that your printer is set up correctly."),
			     MakeDisplayPath(name, 50));
	Alert::error(_("Print document failed"), str);
}


void loadTextclass(string const & name)
{
	std::pair<bool, lyx::textclass_type> const tc_pair =
		textclasslist.NumberOfClass(name);

	if (!tc_pair.first) {
		lyxerr << "Document class \"" << name
		       << "\" does not exist."
		       << std::endl;
		return;
	}

	lyx::textclass_type const tc = tc_pair.second;

	if (!textclasslist[tc].load()) {
		string s = bformat(_("The document could not be converted\n"
				     "into the document class %1$s."),
				   textclasslist[tc].name());
		Alert::error(_("Could not change class"), s);
	}
}

} //namespace anon


void LyXFunc::dispatch(FuncRequest const & cmd)
{
	string const argument = cmd.argument;
	kb_action const action = cmd.action;

	lyxerr[Debug::ACTION] << "LyXFunc::dispatch: cmd: " << cmd << endl;
	//lyxerr << "LyXFunc::dispatch: cmd: " << cmd << endl;

	// we have not done anything wrong yet.
	errorstat = false;
	dispatch_buffer.erase();
	selection_possible = false;

	bool update = true;

	FuncStatus const flag = getStatus(cmd);
	if (!flag.enabled()) {
		// We cannot use this function here
		lyxerr[Debug::ACTION] << "LyXFunc::dispatch: "
		       << lyxaction.getActionName(action)
		       << " [" << action << "] is disabled at this location"
		       << endl;
		setErrorMessage(flag.message());
	} else {

		if (view()->available())
			view()->hideCursor();

		switch (action) {

		case LFUN_WORDFINDFORWARD:
		case LFUN_WORDFINDBACKWARD: {
			static string last_search;
			string searched_string;

			if (!argument.empty()) {
				last_search = argument;
				searched_string = argument;
			} else {
				searched_string = last_search;
			}

			if (searched_string.empty())
				break;

			bool const fw = action == LFUN_WORDFINDFORWARD;
			string const data =
				lyx::find::find2string(searched_string, true, false, fw);
			lyx::find::find(view(), FuncRequest(LFUN_WORD_FIND, data));
			break;
		}

		case LFUN_PREFIX:
			owner->message(keyseq.printOptions());
			break;

		case LFUN_EXEC_COMMAND:
			owner->getToolbars().display("minibuffer", true);
			owner->focus_command_buffer();
			break;

		case LFUN_CANCEL:
			keyseq.reset();
			meta_fake_bit = key_modifier::none;
			if (view()->available())
				// cancel any selection
				dispatch(FuncRequest(LFUN_MARK_OFF));
			setMessage(N_("Cancel"));
			break;

		case LFUN_META_FAKE:
			meta_fake_bit = key_modifier::alt;
			setMessage(keyseq.print());
			break;

		case LFUN_READ_ONLY_TOGGLE:
			if (owner->buffer()->lyxvc().inUse())
				owner->buffer()->lyxvc().toggleReadOnly();
			else
				owner->buffer()->setReadonly(
					!owner->buffer()->isReadonly());
			break;

		// --- Menus -----------------------------------------------
		case LFUN_MENUNEW:
			menuNew(argument, false);
			break;

		case LFUN_MENUNEWTMPLT:
			menuNew(argument, true);
			break;

		case LFUN_CLOSEBUFFER:
			closeBuffer();
			break;

		case LFUN_MENUWRITE:
			if (!owner->buffer()->isUnnamed()) {
				string const str = bformat(_("Saving document %1$s..."),
					 MakeDisplayPath(owner->buffer()->fileName()));
				owner->message(str);
				MenuWrite(owner->buffer());
				owner->message(str + _(" done."));
			} else
				WriteAs(owner->buffer());
			break;

		case LFUN_WRITEAS:
			WriteAs(owner->buffer(), argument);
			break;

		case LFUN_MENURELOAD: {
			string const file = MakeDisplayPath(view()->buffer()->fileName(), 20);
			string text = bformat(_("Any changes will be lost. Are you sure "
				"you want to revert to the saved version of the document %1$s?"), file);
			int const ret = Alert::prompt(_("Revert to saved document?"),
				text, 0, 1, _("&Revert"), _("&Cancel"));

			if (ret == 0)
				view()->reload();
			break;
		}

		case LFUN_UPDATE:
			Exporter::Export(owner->buffer(), argument, true);
			view()->showErrorList(BufferFormat(*owner->buffer()));
			break;

		case LFUN_PREVIEW:
			Exporter::Preview(owner->buffer(), argument);
			view()->showErrorList(BufferFormat(*owner->buffer()));
			break;

		case LFUN_BUILDPROG:
			Exporter::Export(owner->buffer(), "program", true);
			view()->showErrorList(_("Build"));
			break;

		case LFUN_RUNCHKTEX:
			owner->buffer()->runChktex();
			view()->showErrorList(_("ChkTeX"));
			break;

		case LFUN_EXPORT:
			if (argument == "custom")
				owner->getDialogs().show("sendto");
			else {
				Exporter::Export(owner->buffer(), argument, false);
				view()->showErrorList(BufferFormat(*owner->buffer()));
			}
			break;

		case LFUN_EXPORT_CUSTOM: {
			string format_name;
			string command = split(argument, format_name, ' ');
			Format const * format = formats.getFormat(format_name);
			if (!format) {
				lyxerr << "Format \"" << format_name
				       << "\" not recognized!"
				       << std::endl;
				break;
			}

			Buffer * buffer = owner->buffer();

			// The name of the file created by the conversion process
			string filename;

			// Output to filename
			if (format->name() == "lyx") {
				string const latexname =
					buffer->getLatexName(false);
				filename = ChangeExtension(latexname,
							   format->extension());
				filename = AddName(buffer->temppath(), filename);

				if (!buffer->writeFile(filename))
					break;

			} else {
				Exporter::Export(buffer, format_name, true,
						 filename);
			}

			// Substitute $$FName for filename
			if (!contains(command, "$$FName"))
				command = "( " + command + " ) < $$FName";
			command = subst(command, "$$FName", filename);

			// Execute the command in the background
			Systemcall call;
			call.startscript(Systemcall::DontWait, command);
			break;
		}

		case LFUN_PRINT: {
			string target;
			string target_name;
			string command = split(split(argument, target, ' '),
					       target_name, ' ');

			if (target.empty()
			    || target_name.empty()
			    || command.empty()) {
				lyxerr << "Unable to parse \""
				       << argument << '"' << std::endl;
				break;
			}
			if (target != "printer" && target != "file") {
				lyxerr << "Unrecognized target \""
				       << target << '"' << std::endl;
				break;
			}

			Buffer * buffer = owner->buffer();

			if (!Exporter::Export(buffer, "dvi", true)) {
				showPrintError(buffer->fileName());
				break;
			}

			// Push directory path.
			string const path = buffer->temppath();
			Path p(path);

			// there are three cases here:
			// 1. we print to a file
			// 2. we print directly to a printer
			// 3. we print using a spool command (print to file first)
			Systemcall one;
			int res = 0;
			string const dviname =
				ChangeExtension(buffer->getLatexName(true),
						"dvi");

			if (target == "printer") {
				if (!lyxrc.print_spool_command.empty()) {
					// case 3: print using a spool
					string const psname =
						ChangeExtension(dviname,".ps");
					command += lyxrc.print_to_file
						+ QuoteName(psname)
						+ ' '
						+ QuoteName(dviname);

					string command2 =
						lyxrc.print_spool_command +' ';
					if (target_name != "default") {
						command2 += lyxrc.print_spool_printerprefix
							+ target_name
							+ ' ';
					}
					command2 += QuoteName(psname);
					// First run dvips.
					// If successful, then spool command
					res = one.startscript(
						Systemcall::Wait,
						command);

					if (res == 0)
						res = one.startscript(
							Systemcall::DontWait,
							command2);
				} else {
					// case 2: print directly to a printer
					res = one.startscript(
						Systemcall::DontWait,
						command + QuoteName(dviname));
				}

			} else {
				// case 1: print to a file
				command += lyxrc.print_to_file
					+ QuoteName(MakeAbsPath(target_name,
								path))
					+ ' '
					+ QuoteName(dviname);
				res = one.startscript(Systemcall::DontWait,
						      command);
			}

			if (res != 0)
				showPrintError(buffer->fileName());
			break;
		}

		case LFUN_IMPORT:
			doImport(argument);
			break;

		case LFUN_QUIT:
			QuitLyX();
			break;

		case LFUN_TOCVIEW: {
			InsetCommandParams p("tableofcontents");
			string const data = InsetCommandMailer::params2string("toc", p);
			owner->getDialogs().show("toc", data, 0);
			break;
		}

		case LFUN_AUTOSAVE:
			AutoSave(view());
			break;

		case LFUN_RECONFIGURE:
			Reconfigure(view());
			break;

		case LFUN_HELP_OPEN: {
			string const arg = argument;
			if (arg.empty()) {
				setErrorMessage(N_("Missing argument"));
				break;
			}
			string const fname = i18nLibFileSearch("doc", arg, "lyx");
			if (fname.empty()) {
				lyxerr << "LyX: unable to find documentation file `"
							 << arg << "'. Bad installation?" << endl;
				break;
			}
			owner->message(bformat(_("Opening help file %1$s..."),
				MakeDisplayPath(fname)));
			view()->loadLyXFile(fname, false);
			break;
		}

		// --- version control -------------------------------
		case LFUN_VC_REGISTER:
			if (!ensureBufferClean(view()))
				break;
			if (!owner->buffer()->lyxvc().inUse()) {
				owner->buffer()->lyxvc().registrer();
				view()->reload();
			}
			break;

		case LFUN_VC_CHECKIN:
			if (!ensureBufferClean(view()))
				break;
			if (owner->buffer()->lyxvc().inUse()
					&& !owner->buffer()->isReadonly()) {
				owner->buffer()->lyxvc().checkIn();
				view()->reload();
			}
			break;

		case LFUN_VC_CHECKOUT:
			if (!ensureBufferClean(view()))
				break;
			if (owner->buffer()->lyxvc().inUse()
					&& owner->buffer()->isReadonly()) {
				owner->buffer()->lyxvc().checkOut();
				view()->reload();
			}
			break;

		case LFUN_VC_REVERT:
			owner->buffer()->lyxvc().revert();
			view()->reload();
			break;

		case LFUN_VC_UNDO:
			owner->buffer()->lyxvc().undoLast();
			view()->reload();
			break;

		// --- buffers ----------------------------------------
		case LFUN_SWITCHBUFFER:
			view()->setBuffer(bufferlist.getBuffer(argument));
			break;

		case LFUN_NEXTBUFFER:
			view()->setBuffer(bufferlist.next(view()->buffer()));
			break;

		case LFUN_PREVIOUSBUFFER:
			view()->setBuffer(bufferlist.previous(view()->buffer()));
			break;

		case LFUN_FILE_NEW:
			NewFile(view(), argument);
			break;

		case LFUN_FILE_OPEN:
			open(argument);
			break;

		case LFUN_DROP_LAYOUTS_CHOICE:
			owner->getToolbars().openLayoutList();
			break;

		case LFUN_MENU_OPEN_BY_NAME:
			owner->getMenubar().openByName(argument);
			break;

		// --- lyxserver commands ----------------------------
		case LFUN_GETNAME:
			setMessage(owner->buffer()->fileName());
			lyxerr[Debug::INFO] << "FNAME["
							 << owner->buffer()->fileName()
							 << "] " << endl;
			break;

		case LFUN_NOTIFY:
			dispatch_buffer = keyseq.print();
			lyxserver->notifyClient(dispatch_buffer);
			break;

		case LFUN_GOTOFILEROW: {
			string file_name;
			int row;
			istringstream is(argument);
			is >> file_name >> row;
			if (prefixIs(file_name, getTmpDir())) {
				// Needed by inverse dvi search. If it is a file
				// in tmpdir, call the apropriated function
				view()->setBuffer(bufferlist.getBufferFromTmp(file_name));
			} else {
				// Must replace extension of the file to be .lyx
				// and get full path
				string const s = ChangeExtension(file_name, ".lyx");
				// Either change buffer or load the file
				if (bufferlist.exists(s)) {
					view()->setBuffer(bufferlist.getBuffer(s));
				} else {
					view()->loadLyXFile(s);
				}
			}

			view()->setCursorFromRow(row);

			view()->center();
			// see BufferView_pimpl::center()
			view()->updateScrollbar();
			break;
		}

		case LFUN_GOTO_PARAGRAPH: {
			istringstream is(argument);
			int id;
			is >> id;
			ParIterator par = owner->buffer()->getParFromID(id);
			if (par == owner->buffer()->par_iterator_end()) {
				lyxerr[Debug::INFO] << "No matching paragraph found! ["
								<< id << ']' << endl;
				break;
			} else {
				lyxerr[Debug::INFO] << "Paragraph " << par->id()
								<< " found." << endl;
			}

			// Set the cursor
			view()->setCursor(par, 0);

			view()->switchKeyMap();
			owner->view_state_changed();

			view()->center();
			// see BufferView_pimpl::center()
			view()->updateScrollbar();
			break;
		}

		case LFUN_DIALOG_SHOW: {
			string const name = cmd.getArg(0);
			string data = trim(cmd.argument.substr(name.size()));

			if (name == "character") {
				data = freefont2string();
				if (!data.empty())
					owner->getDialogs().show("character", data);
			}

			else if (name == "latexlog") {
				pair<Buffer::LogType, string> const logfile =
					owner->buffer()->getLogName();
				switch (logfile.first) {
				case Buffer::latexlog:
					data = "latex ";
					break;
				case Buffer::buildlog:
					data = "literate ";
					break;
				}
				data += logfile.second;
				owner->getDialogs().show("log", data);
			}
			else if (name == "vclog") {
				string const data = "vc " +
					owner->buffer()->lyxvc().getLogFile();
				owner->getDialogs().show("log", data);
			}
			else
				owner->getDialogs().show(name, data);
			break;
		}

		case LFUN_DIALOG_SHOW_NEW_INSET: {
			string const name = cmd.getArg(0);
			string data = trim(cmd.argument.substr(name.size()));
			if (name == "bibitem" ||
			    name == "bibtex" ||
			    name == "include" ||
			    name == "index" ||
			    name == "label" ||
			    name == "ref" ||
			    name == "toc" ||
			    name == "url") {
				InsetCommandParams p(name);
				data = InsetCommandMailer::params2string(name, p);
			} else if (name == "box") {
				// \c data == "Boxed" || "Frameless" etc
				InsetBoxParams p(data);
				data = InsetBoxMailer::params2string(p);
			} else if (name == "branch") {
				InsetBranchParams p;
				data = InsetBranchMailer::params2string(p);
			} else if (name == "citation") {
				InsetCommandParams p("cite");
				data = InsetCommandMailer::params2string(name, p);
			} else if (name == "ert") {
				data = InsetERTMailer::params2string(InsetCollapsable::Open);
			} else if (name == "external") {
				InsetExternalParams p;
				Buffer const & buffer = *owner->buffer();
				data = InsetExternalMailer::params2string(p, buffer);
			} else if (name == "float") {
				InsetFloatParams p;
				data = InsetFloatMailer::params2string(p);
			} else if (name == "graphics") {
				InsetGraphicsParams p;
				Buffer const & buffer = *owner->buffer();
				data = InsetGraphicsMailer::params2string(p, buffer);
			} else if (name == "note") {
				InsetNoteParams p;
				data = InsetNoteMailer::params2string(p);
			} else if (name == "vspace") {
				VSpace space;
				data = InsetVSpaceMailer::params2string(space);
			} else if (name == "wrap") {
				InsetWrapParams p;
				data = InsetWrapMailer::params2string(p);
			}
			owner->getDialogs().show(name, data, 0);
			break;
		}

		case LFUN_DIALOG_SHOW_NEXT_INSET:
			break;

		case LFUN_DIALOG_UPDATE: {
			string const & name = argument;
			// Can only update a dialog connected to an existing inset
			InsetBase * inset = owner->getDialogs().getOpenInset(name);
			if (inset) {
				FuncRequest fr(LFUN_INSET_DIALOG_UPDATE, cmd.argument);
				inset->dispatch(view()->cursor(), fr);
			} else if (name == "paragraph") {
				dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
			} else if (name == "prefs") {
				owner->getDialogs().update(name, string());
			}
			break;
		}

		case LFUN_DIALOG_HIDE:
			Dialogs::hide(argument, 0);
			break;

		case LFUN_DIALOG_DISCONNECT_INSET:
			owner->getDialogs().disconnect(argument);
			break;

		case LFUN_CHILDOPEN: {
			string const filename =
				MakeAbsPath(argument, owner->buffer()->filePath());
			setMessage(N_("Opening child document ") +
					 MakeDisplayPath(filename) + "...");
			view()->savePosition(0);
			string const parentfilename = owner->buffer()->fileName();
			if (bufferlist.exists(filename))
				view()->setBuffer(bufferlist.getBuffer(filename));
			else
				view()->loadLyXFile(filename);
			// Set the parent name of the child document.
			// This makes insertion of citations and references in the child work,
			// when the target is in the parent or another child document.
			owner->buffer()->setParentName(parentfilename);
			break;
		}

		case LFUN_TOGGLECURSORFOLLOW:
			lyxrc.cursor_follows_scrollbar = !lyxrc.cursor_follows_scrollbar;
			break;

		case LFUN_KMAP_OFF:
			owner->getIntl().KeyMapOn(false);
			break;

		case LFUN_KMAP_PRIM:
			owner->getIntl().KeyMapPrim();
			break;

		case LFUN_KMAP_SEC:
			owner->getIntl().KeyMapSec();
			break;

		case LFUN_KMAP_TOGGLE:
			owner->getIntl().ToggleKeyMap();
			break;

		case LFUN_REPEAT: {
			// repeat command
			string countstr;
			string rest = split(argument, countstr, ' ');
			istringstream is(countstr);
			int count = 0;
			is >> count;
			lyxerr << "repeat: count: " << count << " cmd: " << rest << endl;
			for (int i = 0; i < count; ++i)
				dispatch(lyxaction.lookupFunc(rest));
			break;
		}

		case LFUN_SEQUENCE: {
			// argument contains ';'-terminated commands
			string arg = argument;
			while (!arg.empty()) {
				string first;
				arg = split(arg, first, ';');
				FuncRequest func(lyxaction.lookupFunc(first));
				func.origin = cmd.origin;
				dispatch(func);
			}
			break;
		}

		case LFUN_SAVEPREFERENCES: {
			Path p(user_lyxdir());
			lyxrc.write("preferences", false);
			break;
		}

		case LFUN_SCREEN_FONT_UPDATE:
			// handle the screen font changes.
			lyxrc.set_font_norm_type();
			lyx_gui::update_fonts();
			// All visible buffers will need resize
			view()->resize();
			break;

		case LFUN_SET_COLOR: {
			string lyx_name;
			string const x11_name = split(argument, lyx_name, ' ');
			if (lyx_name.empty() || x11_name.empty()) {
				setErrorMessage(N_("Syntax: set-color <lyx_name>"
							" <x11_name>"));
				break;
			}

			bool const graphicsbg_changed =
				(lyx_name == lcolor.getLyXName(LColor::graphicsbg) &&
				 x11_name != lcolor.getX11Name(LColor::graphicsbg));

			if (!lcolor.setColor(lyx_name, x11_name)) {
				setErrorMessage(
					bformat(_("Set-color \"%1$s\" failed "
								"- color is undefined or "
								"may not be redefined"), lyx_name));
				break;
			}

			lyx_gui::update_color(lcolor.getFromLyXName(lyx_name));

			if (graphicsbg_changed) {
#ifdef WITH_WARNINGS
#warning FIXME!! The graphics cache no longer has a changeDisplay method.
#endif
#if 0
				lyx::graphics::GCache::get().changeDisplay(true);
#endif
			}
			break;
		}

		case LFUN_MESSAGE:
			owner->message(argument);
			break;

		case LFUN_TOOLTIPS_TOGGLE:
			owner->getDialogs().toggleTooltips();
			break;

		case LFUN_EXTERNAL_EDIT: {
			FuncRequest fr(action, argument);
			InsetExternal().dispatch(view()->cursor(), fr);
			break;
		}

		case LFUN_GRAPHICS_EDIT: {
			FuncRequest fr(action, argument);
			InsetGraphics().dispatch(view()->cursor(), fr);
			break;
		}

		case LFUN_ALL_INSETS_TOGGLE: {
			string action;
			string const name = split(argument, action, ' ');
			InsetBase::Code const inset_code =
				InsetBase::translate(name);

			LCursor & cur = view()->cursor();
			FuncRequest fr(LFUN_INSET_TOGGLE, action);

			InsetBase & inset = owner->buffer()->inset();
			InsetIterator it  = inset_iterator_begin(inset);
			InsetIterator const end = inset_iterator_end(inset);
			for (; it != end; ++it) {
				if (inset_code == InsetBase::NO_CODE
				    || inset_code == it->lyxCode())
					it->dispatch(cur, fr);
			}
			break;
		}

		case LFUN_LANGUAGE_BUFFER: {
			Buffer & buffer = *owner->buffer();
			Language const * oldL = buffer.params().language;
			Language const * newL = languages.getLanguage(argument);
			if (!newL || oldL == newL)
				break;

			if (oldL->RightToLeft() == newL->RightToLeft()
			    && !buffer.isMultiLingual())
				buffer.changeLanguage(oldL, newL);
			else
				buffer.updateDocLang(newL);
			break;
		}

		case LFUN_SAVE_AS_DEFAULT: {
			string const fname =
				AddName(AddPath(user_lyxdir(), "templates/"),
					"defaults.lyx");
			Buffer defaults(fname);

			istringstream ss(argument);
			LyXLex lex(0,0);
			lex.setStream(ss);
			int const unknown_tokens = defaults.readHeader(lex);

			if (unknown_tokens != 0) {
				lyxerr << "Warning in LFUN_SAVE_AS_DEFAULT!\n"
				       << unknown_tokens << " unknown token"
				       << (unknown_tokens == 1 ? "" : "s")
				       << endl;
			}

			if (defaults.writeFile(defaults.fileName()))
				setMessage(_("Document defaults saved in ")
					   + MakeDisplayPath(fname));
			else
				setErrorMessage(_("Unable to save document defaults"));
			break;
		}

		case LFUN_BUFFERPARAMS_APPLY: {
			biblio::CiteEngine const engine =
				owner->buffer()->params().cite_engine;

			istringstream ss(argument);
			LyXLex lex(0,0);
			lex.setStream(ss);
			int const unknown_tokens =
				owner->buffer()->readHeader(lex);

			if (unknown_tokens != 0) {
				lyxerr << "Warning in LFUN_BUFFERPARAMS_APPLY!\n"
				       << unknown_tokens << " unknown token"
				       << (unknown_tokens == 1 ? "" : "s")
				       << endl;
			}
			if (engine == owner->buffer()->params().cite_engine)
				break;

			LCursor & cur = view()->cursor();
			FuncRequest fr(LFUN_INSET_REFRESH);

			InsetBase & inset = owner->buffer()->inset();
			InsetIterator it  = inset_iterator_begin(inset);
			InsetIterator const end = inset_iterator_end(inset);
			for (; it != end; ++it)
				if (it->lyxCode() == InsetBase::CITE_CODE)
					it->dispatch(cur, fr);
			break;
		}

		case LFUN_TEXTCLASS_APPLY: {
			Buffer * buffer = owner->buffer();

			lyx::textclass_type const old_class =
				buffer->params().textclass;

			loadTextclass(argument);

			std::pair<bool, lyx::textclass_type> const tc_pair =
				textclasslist.NumberOfClass(argument);

			if (!tc_pair.first)
				break;

			lyx::textclass_type const new_class = tc_pair.second;
			if (old_class == new_class)
				// nothing to do
				break;

			owner->message(_("Converting document to new document class..."));
			ErrorList el;
			lyx::cap::SwitchLayoutsBetweenClasses(
				old_class, new_class,
				buffer->paragraphs(), el);

			bufferErrors(*buffer, el);
			view()->showErrorList(_("Class switch"));
			break;
		}

		case LFUN_TEXTCLASS_LOAD:
			loadTextclass(argument);
			break;

		case LFUN_LYXRC_APPLY: {
			istringstream ss(argument);
			bool const success = lyxrc.read(ss) == 0;

			if (!success) {
				lyxerr << "Warning in LFUN_LYXRC_APPLY!\n"
				       << "Unable to read lyxrc data"
				       << endl;
			}
			break;
		}

		default: {
			update = false;
			view()->cursor().dispatch(cmd);
			if (view()->cursor().result().dispatched())
				update |= view()->cursor().result().update();
			else
				update |= view()->dispatch(cmd);

			break;
		}
		}

		if (view()->available()) {
			// Redraw screen unless explicitly told otherwise.
			// This also initializes the position cache for all insets
			// in (at least partially) visible top-level paragraphs.
			if (update)
				view()->update();

			// fitCursor() needs valid inset position. The previous call to
			// update() makes sure we have such even for freshly created
			// insets.
			if (view()->fitCursor())
				view()->update();
			// if we executed a mutating lfun, mark the buffer as dirty
			if (getStatus(cmd).enabled()
					&& !lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer)
					&& !lyxaction.funcHasFlag(cmd.action, LyXAction::ReadOnly))
				view()->buffer()->markDirty();
		}

		if (view()->cursor().inTexted()) {
			view()->owner()->updateLayoutChoice();
		}
	}
	sendDispatchMessage(getMessage(), cmd);
}


void LyXFunc::sendDispatchMessage(string const & msg, FuncRequest const & cmd)
{
	owner->updateMenubar();
	owner->updateToolbars();

	const bool verbose = (cmd.origin == FuncRequest::UI
			      || cmd.origin == FuncRequest::COMMANDBUFFER);

	if (cmd.action == LFUN_SELFINSERT || !verbose) {
		lyxerr[Debug::ACTION] << "dispatch msg is " << msg << endl;
		if (!msg.empty())
			owner->message(msg);
		return;
	}

	string dispatch_msg = msg;
	if (!dispatch_msg.empty())
		dispatch_msg += ' ';

	string comname = lyxaction.getActionName(cmd.action);

	bool argsadded = false;

	if (!cmd.argument.empty()) {
		if (cmd.action != LFUN_UNKNOWN_ACTION) {
			comname += ' ' + cmd.argument;
			argsadded = true;
		}
	}

	string const shortcuts = toplevel_keymap->printbindings(cmd);

	if (!shortcuts.empty()) {
		comname += ": " + shortcuts;
	} else if (!argsadded && !cmd.argument.empty()) {
		comname += ' ' + cmd.argument;
	}

	if (!comname.empty()) {
		comname = rtrim(comname);
		dispatch_msg += '(' + comname + ')';
	}

	lyxerr[Debug::ACTION] << "verbose dispatch msg " << dispatch_msg << endl;
	if (!dispatch_msg.empty())
		owner->message(dispatch_msg);
}


void LyXFunc::setupLocalKeymap()
{
	keyseq.stdmap = toplevel_keymap.get();
	keyseq.curmap = toplevel_keymap.get();
	cancel_meta_seq.stdmap = toplevel_keymap.get();
	cancel_meta_seq.curmap = toplevel_keymap.get();
}


void LyXFunc::menuNew(string const & name, bool fromTemplate)
{
	string initpath = lyxrc.document_path;
	string filename(name);

	if (view()->available()) {
		string const trypath = owner->buffer()->filePath();
		// If directory is writeable, use this as default.
		if (IsDirWriteable(trypath))
			initpath = trypath;
	}

	static int newfile_number;

	if (filename.empty()) {
		filename = AddName(lyxrc.document_path,
			    "newfile" + tostr(++newfile_number) + ".lyx");
		FileInfo fi(filename);
		while (bufferlist.exists(filename) || fi.readable()) {
			++newfile_number;
			filename = AddName(lyxrc.document_path,
				    "newfile" +	tostr(newfile_number) +
				    ".lyx");
			fi.newFile(filename);
		}
	}

	// The template stuff
	string templname;
	if (fromTemplate) {
		FileDialog fileDlg(_("Select template file"),
			LFUN_SELECT_FILE_SYNC,
			make_pair(string(_("Documents|#o#O")),
				  string(lyxrc.document_path)),
			make_pair(string(_("Templates|#T#t")),
				  string(lyxrc.template_path)));

		FileDialog::Result result =
			fileDlg.open(lyxrc.template_path,
				     FileFilterList(_("LyX Documents (*.lyx)")),
				     string());

		if (result.first == FileDialog::Later)
			return;
		if (result.second.empty())
			return;
		templname = result.second;
	}

	view()->newFile(filename, templname, !name.empty());
}


void LyXFunc::open(string const & fname)
{
	string initpath = lyxrc.document_path;

	if (view()->available()) {
		string const trypath = owner->buffer()->filePath();
		// If directory is writeable, use this as default.
		if (IsDirWriteable(trypath))
			initpath = trypath;
	}

	string filename;

	if (fname.empty()) {
		FileDialog fileDlg(_("Select document to open"),
			LFUN_FILE_OPEN,
			make_pair(string(_("Documents|#o#O")),
				  string(lyxrc.document_path)),
			make_pair(string(_("Examples|#E#e")),
				  string(AddPath(system_lyxdir(), "examples"))));

		FileDialog::Result result =
			fileDlg.open(initpath,
				     FileFilterList(_("LyX Documents (*.lyx)")),
				     string());

		if (result.first == FileDialog::Later)
			return;

		filename = result.second;

		// check selected filename
		if (filename.empty()) {
			owner->message(_("Canceled."));
			return;
		}
	} else
		filename = fname;

	// get absolute path of file and add ".lyx" to the filename if
	// necessary
	string const fullpath = FileSearch(string(), filename, "lyx");
	if (!fullpath.empty()) {
		filename = fullpath;
	}

	string const disp_fn(MakeDisplayPath(filename));

	// if the file doesn't exist, let the user create one
	FileInfo const f(filename, true);
	if (!f.exist()) {
		// the user specifically chose this name. Believe them.
		view()->newFile(filename, "", true);
		return;
	}

	owner->message(bformat(_("Opening document %1$s..."), disp_fn));

	string str2;
	if (view()->loadLyXFile(filename)) {
		str2 = bformat(_("Document %1$s opened."), disp_fn);
	} else {
		str2 = bformat(_("Could not open document %1$s"), disp_fn);
	}
	owner->message(str2);
}


void LyXFunc::doImport(string const & argument)
{
	string format;
	string filename = split(argument, format, ' ');

	lyxerr[Debug::INFO] << "LyXFunc::doImport: " << format
			    << " file: " << filename << endl;

	// need user interaction
	if (filename.empty()) {
		string initpath = lyxrc.document_path;

		if (view()->available()) {
			string const trypath = owner->buffer()->filePath();
			// If directory is writeable, use this as default.
			if (IsDirWriteable(trypath))
				initpath = trypath;
		}

		string const text = bformat(_("Select %1$s file to import"),
			formats.prettyName(format));

		FileDialog fileDlg(text,
			LFUN_IMPORT,
			make_pair(string(_("Documents|#o#O")),
				  string(lyxrc.document_path)),
			make_pair(string(_("Examples|#E#e")),
				  string(AddPath(system_lyxdir(), "examples"))));

		string const filter = formats.prettyName(format)
			+ " (*." + formats.extension(format) + ')';

		FileDialog::Result result =
			fileDlg.open(initpath,
				     FileFilterList(filter),
				     string());

		if (result.first == FileDialog::Later)
			return;

		filename = result.second;

		// check selected filename
		if (filename.empty())
			owner->message(_("Canceled."));
	}

	if (filename.empty())
		return;

	// get absolute path of file
	filename = MakeAbsPath(filename);

	string const lyxfile = ChangeExtension(filename, ".lyx");

	// Check if the document already is open
	if (lyx_gui::use_gui && bufferlist.exists(lyxfile)) {
		if (!bufferlist.close(bufferlist.getBuffer(lyxfile), true)) {
			owner->message(_("Canceled."));
			return;
		}
	}

	// if the file exists already, and we didn't do
	// -i lyx thefile.lyx, warn
	if (FileInfo(lyxfile, true).exist() && filename != lyxfile) {
		string const file = MakeDisplayPath(lyxfile, 30);

		string text = bformat(_("The document %1$s already exists.\n\n"
			"Do you want to over-write that document?"), file);
		int const ret = Alert::prompt(_("Over-write document?"),
			text, 0, 1, _("&Over-write"), _("&Cancel"));

		if (ret == 1) {
			owner->message(_("Canceled."));
			return;
		}
	}

	Importer::Import(owner, filename, format);
}


void LyXFunc::closeBuffer()
{
	if (bufferlist.close(owner->buffer(), true) && !quitting) {
		if (bufferlist.empty()) {
			// need this otherwise SEGV may occur while
			// trying to set variables that don't exist
			// since there's no current buffer
			owner->getDialogs().hideBufferDependent();
		} else {
			view()->setBuffer(bufferlist.first());
		}
	}
}


// Each "owner" should have it's own message method. lyxview and
// the minibuffer would use the minibuffer, but lyxserver would
// send an ERROR signal to its client.  Alejandro 970603
// This function is bit problematic when it comes to NLS, to make the
// lyx servers client be language indepenent we must not translate
// strings sent to this func.
void LyXFunc::setErrorMessage(string const & m) const
{
	dispatch_buffer = m;
	errorstat = true;
}


void LyXFunc::setMessage(string const & m) const
{
	dispatch_buffer = m;
}


string const LyXFunc::viewStatusMessage()
{
	// When meta-fake key is pressed, show the key sequence so far + "M-".
	if (wasMetaKey())
		return keyseq.print() + "M-";

	// Else, when a non-complete key sequence is pressed,
	// show the available options.
	if (keyseq.length() > 0 && !keyseq.deleted())
		return keyseq.printOptions();

	if (!view()->available())
		return _("Welcome to LyX!");

	return view()->cursor().currentState();
}


BufferView * LyXFunc::view() const
{
	BOOST_ASSERT(owner);
	return owner->view().get();
}


bool LyXFunc::wasMetaKey() const
{
	return (meta_fake_bit != key_modifier::none);
}