lyx_mirror/src/frontends/xforms/FormDocument.C

/* This file is part of
 * ======================================================
 * 
 *           LyX, The Document Processor
 * 	 
 *           Copyright 2000-2001 The LyX Team.
 *
 *           @author J<EFBFBD>rgen Vigna
 *
 *======================================================*/

#include <config.h>

#include FORMS_H_LOCATION
#include XPM_H_LOCATION

#ifdef __GNUG_
#pragma implementation
#endif

#include "FormDocument.h"
#include "form_document.h"
#include "Alert.h"
#include "Dialogs.h"
#include "lyxtextclasslist.h"
#include "combox.h"
#include "tex-strings.h"
#include "bufferparams.h"
#include "vspace.h"
#include "bmtable.h"
#include "language.h"
#include "LyXView.h"
#include "lyxfunc.h"
#include "lyxrc.h"
#include "BufferView.h"
#include "buffer.h"
#include "Liason.h"
#include "CutAndPaste.h"
#include "bufferview_funcs.h"
#include "xforms_helpers.h" 
#include "debug.h"
#include "input_validators.h" // fl_unsigned_float_filter
#include "helper_funcs.h" 
#include "lyx_main.h" // for user_lyxdir

#include "insets/insetquotes.h"

#include "support/filetools.h"
#include "support/lstrings.h"

using Liason::setMinibuffer;
using SigC::slot;

FormDocument::FormDocument(LyXView * lv, Dialogs * d)
	: FormBaseBD(lv, d, _("Document Layout")),
	  ActCell(0), Confirmed(0),
	  current_bullet_panel(0), current_bullet_depth(0), fbullet(0)
{
	// let the dialog be shown
	// This is a permanent connection so we won't bother
	// storing a copy because we won't be disconnecting.
	d->showDocument.connect(slot(this, &FormDocument::show));
}


void FormDocument::redraw()
{
	if (form() && form()->visible)
		fl_redraw_form(form());
	else
		return;

	FL_FORM * outer_form = fl_get_active_folder(dialog_->tabbed_folder);
	if (outer_form && outer_form->visible)
		fl_redraw_form(outer_form);
}


FL_FORM * FormDocument::form() const
{
	if (dialog_.get()) return dialog_->form;
	return 0;
}


void FormDocument::build()
{
	int n;

	// the tabbed folder
	dialog_.reset(build_tabbed_document());

	// Manage the restore, ok, apply, restore and cancel/close buttons
	bc().setOK(dialog_->button_ok);
	bc().setApply(dialog_->button_apply);
	bc().setCancel(dialog_->button_cancel);
	bc().setRestore(dialog_->button_restore);
	bc().addReadOnly (dialog_->button_save_defaults);
	bc().addReadOnly (dialog_->button_reset_defaults);

	// the document paper form
	paper_.reset(build_doc_paper());
	fl_addto_choice(paper_->choice_papersize,
			_(" Default | Custom | USletter | USlegal "
			  "| USexecutive | A3 | A4 | A5 | B3 | B4 | B5 "));
	fl_addto_choice(paper_->choice_paperpackage,
			_(" None "
			  "| Small Margins "
			  "| Very small Margins "
			  "| Very wide Margins "));

	fl_set_input_return(paper_->input_custom_width,  FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_custom_height, FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_top_margin,    FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_bottom_margin, FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_inner_margin,  FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_outer_margin,  FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_head_height,   FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_head_sep,      FL_RETURN_CHANGED);
	fl_set_input_return(paper_->input_foot_skip,     FL_RETURN_CHANGED);


	// Create the contents of the unit choices
	// Don't include the "%" terms...
	std::vector<string> units_vec = getLatexUnits();
	for (std::vector<string>::iterator it = units_vec.begin();
		it != units_vec.end(); ++it) {
		if (contains(*it, "%"))
			it = units_vec.erase(it, it+1) - 1;
	}
	string units = getStringFromVector(units_vec, "|");

	fl_addto_choice(paper_->choice_custom_width_units,  units.c_str());
	fl_addto_choice(paper_->choice_custom_height_units, units.c_str());
	fl_addto_choice(paper_->choice_top_margin_units,    units.c_str());
	fl_addto_choice(paper_->choice_bottom_margin_units, units.c_str());
	fl_addto_choice(paper_->choice_inner_margin_units,  units.c_str());
	fl_addto_choice(paper_->choice_outer_margin_units,  units.c_str());
	fl_addto_choice(paper_->choice_head_height_units,   units.c_str());
	fl_addto_choice(paper_->choice_head_sep_units,      units.c_str());
	fl_addto_choice(paper_->choice_foot_skip_units,     units.c_str());

	bc().addReadOnly (paper_->choice_paperpackage);
	bc().addReadOnly (paper_->group_radio_orientation);
	bc().addReadOnly (paper_->radio_portrait);
	bc().addReadOnly (paper_->radio_landscape);
	bc().addReadOnly (paper_->choice_papersize);
	bc().addReadOnly (paper_->check_use_geometry);
	bc().addReadOnly (paper_->input_custom_width);
	bc().addReadOnly (paper_->input_custom_height);
	bc().addReadOnly (paper_->input_top_margin);
	bc().addReadOnly (paper_->input_bottom_margin);
	bc().addReadOnly (paper_->input_inner_margin);
	bc().addReadOnly (paper_->input_outer_margin);
	bc().addReadOnly (paper_->input_head_height);
	bc().addReadOnly (paper_->input_head_sep);
	bc().addReadOnly (paper_->input_foot_skip);

	// the document class form
	class_.reset(build_doc_class());

	FL_OBJECT * obj;
	// The language is a combo-box and has to be inserted manually
	obj = class_->choice_doc_class;
	fl_deactivate_object(obj);
	fl_addto_form(class_->form);
	combo_doc_class.reset(new Combox(FL_COMBOX_DROPLIST));
	combo_doc_class->add(obj->x, obj->y, obj->w, obj->h, 400,
			     dialog_->tabbed_folder);
	combo_doc_class->shortcut("#C",1);
	combo_doc_class->setcallback(ComboInputCB, this);
	fl_end_form();
	for (LyXTextClassList::const_iterator cit = textclasslist.begin();
	     cit != textclasslist.end(); ++cit) {
		combo_doc_class->addto(cit->description());
	}

	fl_addto_choice(class_->choice_doc_spacing,
			_(" Single | OneHalf | Double | Other "));
	fl_addto_choice(class_->choice_doc_fontsize, "default|10|11|12");
	for (n=0; tex_fonts[n][0]; ++n) {
		fl_addto_choice(class_->choice_doc_fonts,tex_fonts[n]);
	}
	fl_addto_choice(class_->choice_doc_pagestyle,
			"default|empty|plain|headings|fancy");
	fl_addto_choice(class_->choice_doc_skip,
			_(" Smallskip | Medskip | Bigskip | Length "));
	fl_addto_choice(class_->choice_default_skip_units,  units.c_str());
	fl_set_input_return(class_->input_doc_extra, FL_RETURN_CHANGED);
	fl_set_input_return(class_->input_doc_skip, FL_RETURN_CHANGED);
	fl_set_input_return(class_->input_doc_spacing, FL_RETURN_CHANGED);

	// Set input filters on doc spacing to make it accept only
	// unsigned numbers.
	fl_set_input_filter(class_->input_doc_spacing, fl_unsigned_float_filter);

	bc().addReadOnly (class_->radio_doc_indent);
	bc().addReadOnly (class_->radio_doc_skip);

	bc().addReadOnly (class_->choice_doc_pagestyle);
	bc().addReadOnly (class_->choice_doc_fonts);
	bc().addReadOnly (class_->choice_doc_fontsize);
	bc().addReadOnly (class_->radio_doc_sides_one);
	bc().addReadOnly (class_->radio_doc_sides_two);
	bc().addReadOnly (class_->radio_doc_columns_one);
	bc().addReadOnly (class_->radio_doc_columns_two);
	bc().addReadOnly (class_->input_doc_extra);
	bc().addReadOnly (class_->input_doc_skip);
	bc().addReadOnly (class_->choice_doc_skip);
	bc().addReadOnly (class_->choice_doc_spacing);
	bc().addReadOnly (class_->input_doc_spacing);

	// the document language form
	language_.reset(build_doc_language());
	fl_addto_choice(language_->choice_inputenc,
			"default|auto|latin1|latin2|latin3|latin4|latin5|latin9"
			"|koi8-r|koi8-u|cp866|cp1251|iso88595");

	// The language is a combo-box and has to be inserted manually
	obj = language_->choice_language;
	fl_deactivate_object(obj);
	fl_addto_form(language_->form);
	combo_language.reset(new Combox(FL_COMBOX_DROPLIST));
	combo_language->add(obj->x, obj->y, obj->w, obj->h, 400,
			    dialog_->tabbed_folder);
	combo_language->shortcut("#L",1);
	combo_language->setcallback(ComboInputCB, this);
	fl_end_form();

	for (Languages::const_iterator cit = languages.begin();
	     cit != languages.end(); ++cit) {
		combo_language->addto(cit->second.lang());
	}

	fl_addto_choice(language_->choice_quotes_language,
			_(" ``text'' | ''text'' | ,,text`` | ,,text'' |"
			  " <20>text<78> | <20>text<78> "));

	bc().addReadOnly (language_->choice_inputenc);
	bc().addReadOnly (language_->choice_quotes_language);
	bc().addReadOnly (language_->radio_single);
	bc().addReadOnly (language_->radio_double);

	// the document options form
	options_.reset(build_doc_options());
	fl_set_input_return(options_->input_float_placement, FL_RETURN_CHANGED);
	fl_set_counter_bounds(options_->slider_secnumdepth,-2,5);
	fl_set_counter_bounds(options_->slider_tocdepth,-1,5);
	fl_set_counter_step(options_->slider_secnumdepth,1,1);
	fl_set_counter_step(options_->slider_tocdepth,1,1);
	fl_set_counter_precision(options_->slider_secnumdepth, 0);
	fl_set_counter_precision(options_->slider_tocdepth, 0);
	for (n=0; tex_graphics[n][0]; ++n) {
		fl_addto_choice(options_->choice_postscript_driver,
				tex_graphics[n]);
	}
	fl_addto_choice(options_->choice_citation_format,
			_(" Author-year | Numerical "));

	bc_.addReadOnly (options_->slider_secnumdepth);
	bc_.addReadOnly (options_->slider_tocdepth);
	bc_.addReadOnly (options_->check_use_amsmath);
	bc_.addReadOnly (options_->check_use_natbib);
	bc_.addReadOnly (options_->choice_citation_format);
	bc_.addReadOnly (options_->input_float_placement);
	bc_.addReadOnly (options_->choice_postscript_driver);

	// the document bullets form
	bullets_.reset(build_doc_bullet());
	fl_addto_choice(bullets_->choice_bullet_size,
			_(" default | tiny | script | footnote | small |"
			  " normal | large | Large | LARGE | huge | Huge"));
	fl_set_choice(bullets_->choice_bullet_size, 1);
	fl_set_input_return(bullets_->input_bullet_latex, FL_RETURN_CHANGED);
	fl_set_input_maxchars(bullets_->input_bullet_latex, 80);

	bc().addReadOnly (bullets_->bmtable_bullet_panel);
	bc().addReadOnly (bullets_->choice_bullet_size);
	bc().addReadOnly (bullets_->input_bullet_latex);
	bc().addReadOnly (bullets_->radio_bullet_depth);
	bc().addReadOnly (bullets_->radio_bullet_panel);

	fl_addto_tabfolder(dialog_->tabbed_folder,_("Document"),
			   class_->form);
	fl_addto_tabfolder(dialog_->tabbed_folder,_("Paper"),
			   paper_->form);
	fl_addto_tabfolder(dialog_->tabbed_folder,_("Language"),
			   language_->form);
	fl_addto_tabfolder(dialog_->tabbed_folder,_("Extra"),
			   options_->form);
	fbullet = fl_addto_tabfolder(dialog_->tabbed_folder,_("Bullets"),
				     bullets_->form);
	if ((XpmVersion < 4) || (XpmVersion == 4 && XpmRevision < 7)) {
		lyxerr << _("Your version of libXpm is older than 4.7.\n"
			    "The `bullet' tab of the document dialog "
			    "has been disabled") << '\n';
		fl_deactivate_object(fbullet);
		fl_set_object_lcol(fbullet, FL_INACTIVE);
	}
}


void FormDocument::apply()
{
	if (!lv_->view()->available() || !dialog_.get())
		return;

	bool redo = class_apply();
	paper_apply();
	redo = language_apply() || redo;
	redo = options_apply() || redo;
	bullets_apply();

	if (redo) {
		lv_->view()->redoCurrentBuffer();
	}
	lv_->buffer()->markDirty();
	setMinibuffer(lv_, _("Document layout set"));
}


void FormDocument::cancel()
{
	// this avoids confusion when reopening
	BufferParams & param = lv_->buffer()->params;
	param.temp_bullets[0] = param.user_defined_bullets[0];
	param.temp_bullets[1] = param.user_defined_bullets[1];
	param.temp_bullets[2] = param.user_defined_bullets[2];
	param.temp_bullets[3] = param.user_defined_bullets[3];
	hide();
}


void FormDocument::update()
{
	if (!dialog_.get())
		return;

	checkReadOnly();

	BufferParams const & params = lv_->buffer()->params;

	class_update(params);
	paper_update(params);
	language_update(params);
	options_update(params);
	bullets_update(params);
}


namespace {
// should this go elsewhere? Maybe a ControllerDocument? (JMarc)
/** Save the buffer's parameters as user default.
    This function saves a file \c user_lyxdir/templates/defaults.lyx
    which parameters are those of the current buffer. This file
    is used as a default template when creating a new
    file. Returns \c true on success.
*/
bool saveParamsAsDefault(BufferParams const &params)
{
	if (!Alert::askQuestion(_("Do you want to save the current settings"),
			 _("for the document layout as default?"),
			 _("(they will be valid for any new document)")))
		return false;
	
	string const fname = AddName(AddPath(user_lyxdir, "templates/"),
				     "defaults.lyx");
	Buffer defaults = Buffer(fname);
	defaults.params = params;
	
	// add an empty paragraph. Is this enough?
	defaults.paragraph = new Paragraph;
		
	return defaults.writeFile(defaults.fileName(), false);
}

} //namespace

bool FormDocument::input(FL_OBJECT * ob, long data)
{
	State cb = static_cast<State>(data);

	switch (cb) {
	case CHECKCHOICECLASS:
		CheckChoiceClass(ob, 0);
		break;
	case CHOICEBULLETSIZE:
		ChoiceBulletSize(ob, 0);
		break;
	case INPUTBULLETLATEX:
		InputBulletLaTeX(ob, 0);
		break;
	case BULLETDEPTH1:
	case BULLETDEPTH2:
	case BULLETDEPTH3:
	case BULLETDEPTH4:
		BulletDepth(ob, cb);
		break;
	case BULLETPANEL1:
	case BULLETPANEL2:
	case BULLETPANEL3:
	case BULLETPANEL4:
	case BULLETPANEL5:
	case BULLETPANEL6:
		BulletPanel(ob, cb);
		break;
	case BULLETBMTABLE:
		BulletBMTable(ob, 0);
		break;
	default:
		break;
	}

	bool const length_input = fl_get_choice(class_->choice_doc_skip) == 4;
	if (ob == class_->choice_doc_skip) {
		setEnabled(class_->input_doc_skip, length_input);
		setEnabled(class_->choice_default_skip_units, length_input);
	}

	if (ob == class_->choice_doc_spacing)
		setEnabled(class_->input_doc_spacing,
			   fl_get_choice(class_->choice_doc_spacing) == 4);

	bool const skip_used = fl_get_button(class_->radio_doc_skip);
	if (ob == class_->radio_doc_skip ||
	    ob == class_->radio_doc_indent) {
		setEnabled(class_->choice_doc_skip, skip_used);
		setEnabled(class_->input_doc_skip,
			   skip_used && length_input);
		setEnabled(class_->choice_default_skip_units,
			   skip_used && length_input);
		// Default unit choice is cm if metric, inches if US paper.
		// If papersize is default, check the lyxrc-settings
		int const paperchoice = fl_get_choice(paper_->choice_papersize);
		bool const metric = (paperchoice == 1 && lyxrc.default_papersize > 3)
			|| paperchoice == 2 || paperchoice > 5;
		int const default_unit = metric ? 8 : 9;
		if (strip(fl_get_input(class_->input_doc_skip)).empty())
			fl_set_choice(class_->choice_default_skip_units,
				      default_unit);
	}

	if (ob == options_->check_use_natbib) {
		setEnabled(options_->choice_citation_format,
			   fl_get_button(options_->check_use_natbib));
	}

	if (ob == dialog_->button_save_defaults) {
		BufferParams params;
		class_apply(params);
		paper_apply(params);
		language_apply(params);
		options_apply(params);
		bullets_apply(params);
		saveParamsAsDefault(params);
	}

	if (ob == dialog_->button_reset_defaults) {
		BufferParams params = lv_->buffer()->params;
		params.textclass = combo_doc_class->get() - 1;
		params.useClassDefaults();
		UpdateLayoutDocument(params);
	}

	if (ob == paper_->radio_landscape)
		fl_set_choice(paper_->choice_paperpackage,
		BufferParams::PACKAGE_NONE + 1);

	if (ob == paper_->choice_papersize) {
		int const paperchoice = fl_get_choice(paper_->choice_papersize);
		bool const defsize = paperchoice == 1;
		bool const custom = paperchoice == 2;
		bool const a3size = paperchoice == 6;
		bool const b3size = paperchoice == 9;
		bool const b4size = paperchoice == 10;

		if (custom)
			fl_set_button(paper_->radio_portrait, 1);

		bool const use_geom = (custom || a3size || b3size || b4size);

		fl_set_button(paper_->check_use_geometry, int(use_geom));

		setEnabled(paper_->input_top_margin,    use_geom);
		setEnabled(paper_->input_bottom_margin, use_geom);
		setEnabled(paper_->input_inner_margin,  use_geom);
		setEnabled(paper_->input_outer_margin,  use_geom);
		setEnabled(paper_->input_head_height,   use_geom);
		setEnabled(paper_->input_head_sep,      use_geom);
		setEnabled(paper_->input_foot_skip,     use_geom);
		setEnabled(paper_->choice_top_margin_units,    use_geom);
		setEnabled(paper_->choice_bottom_margin_units, use_geom);
		setEnabled(paper_->choice_inner_margin_units,  use_geom);
		setEnabled(paper_->choice_outer_margin_units,  use_geom);
		setEnabled(paper_->choice_head_height_units,   use_geom);
		setEnabled(paper_->choice_head_sep_units,      use_geom);
		setEnabled(paper_->choice_foot_skip_units,     use_geom);
		setEnabled(paper_->choice_custom_width_units,  use_geom);
		setEnabled(paper_->choice_custom_height_units, use_geom);

		setEnabled(paper_->input_custom_width,  custom);
		setEnabled(paper_->input_custom_height, custom);
		setEnabled(paper_->choice_custom_width_units,  custom);
		setEnabled(paper_->choice_custom_height_units, custom);
		setEnabled(paper_->radio_portrait,  !custom);
		setEnabled(paper_->radio_landscape, !custom);

		// Default unit choice is cm if metric, inches if US paper.
		// If papersize is default, use the lyxrc-settings
		bool const metric = (defsize && lyxrc.default_papersize > 3)
			|| paperchoice == 2 || paperchoice > 5;
		int const default_unit = metric ? 8 : 9;
		if (strip(fl_get_input(paper_->input_custom_width)).empty())
		fl_set_choice(paper_->choice_custom_width_units,
			      default_unit);
		if (strip(fl_get_input(paper_->input_custom_height)).empty())
			fl_set_choice(paper_->choice_custom_height_units,
				      default_unit);
		if (strip(fl_get_input(paper_->input_top_margin)).empty())
			fl_set_choice(paper_->choice_top_margin_units,
				      default_unit);
		if (strip(fl_get_input(paper_->input_bottom_margin)).empty())
			fl_set_choice(paper_->choice_bottom_margin_units,
				      default_unit);
		if (strip(fl_get_input(paper_->input_inner_margin)).empty())
			fl_set_choice(paper_->choice_inner_margin_units,
				      default_unit);
		if (strip(fl_get_input(paper_->input_outer_margin)).empty())
			fl_set_choice(paper_->choice_outer_margin_units,
				      default_unit);
		if (strip(fl_get_input(paper_->input_head_height)).empty())
			fl_set_choice(paper_->choice_head_height_units,
				      default_unit);
		if (strip(fl_get_input(paper_->input_head_sep)).empty())
			fl_set_choice(paper_->choice_head_sep_units,
				      default_unit);
		if (strip(fl_get_input(paper_->input_foot_skip)).empty())
			fl_set_choice(paper_->choice_foot_skip_units,
				      default_unit);
	}

	if (ob == paper_->choice_papersize ||
	    ob == paper_->radio_portrait ||
	    ob == paper_->radio_landscape) {

		setEnabled(paper_->choice_paperpackage,
			   //either default papersize (preferences)
			   //or document papersize has to be A4
			   (fl_get_choice(paper_->choice_papersize) == 7
			    || fl_get_choice(paper_->choice_papersize) == 1
			    && lyxrc.default_papersize == 5)
			   && fl_get_button(paper_->radio_portrait));
	}

	if (ob == paper_->choice_paperpackage) {
		if (fl_get_choice(paper_->choice_paperpackage) != 1) {
			fl_set_button(paper_->check_use_geometry, 0);

			setEnabled(paper_->input_top_margin,    false);
			setEnabled(paper_->input_bottom_margin, false);
			setEnabled(paper_->input_inner_margin,  false);
			setEnabled(paper_->input_outer_margin,  false);
			setEnabled(paper_->input_head_height,   false);
			setEnabled(paper_->input_head_sep,      false);
			setEnabled(paper_->input_foot_skip,     false);
			setEnabled(paper_->choice_top_margin_units,    false);
			setEnabled(paper_->choice_bottom_margin_units, false);
			setEnabled(paper_->choice_inner_margin_units,  false);
			setEnabled(paper_->choice_outer_margin_units,  false);
			setEnabled(paper_->choice_head_height_units,   false);
			setEnabled(paper_->choice_head_sep_units,      false);
			setEnabled(paper_->choice_foot_skip_units,     false);
		}
	}

	if (ob == paper_->check_use_geometry) {
		//don't allow switching geometry off in custom papersize mode
		//nor in A3, B3, and B4
		int const choice = fl_get_choice(paper_->choice_papersize);
		if (choice == 2 || choice == 6 || choice == 9 || choice == 10)
			fl_set_button(paper_->check_use_geometry, 1);

		fl_set_choice(paper_->choice_paperpackage,
			      BufferParams::PACKAGE_NONE + 1);

		bool const use_geom = fl_get_button(paper_->check_use_geometry);
		setEnabled(paper_->input_top_margin,    use_geom);
		setEnabled(paper_->input_bottom_margin, use_geom);
		setEnabled(paper_->input_inner_margin,  use_geom);
		setEnabled(paper_->input_outer_margin,  use_geom);
		setEnabled(paper_->input_head_height,   use_geom);
		setEnabled(paper_->input_head_sep,      use_geom);
		setEnabled(paper_->input_foot_skip,     use_geom);
		setEnabled(paper_->choice_top_margin_units,    use_geom);
		setEnabled(paper_->choice_bottom_margin_units, use_geom);
		setEnabled(paper_->choice_inner_margin_units,  use_geom);
		setEnabled(paper_->choice_outer_margin_units,  use_geom);
		setEnabled(paper_->choice_head_height_units,   use_geom);
		setEnabled(paper_->choice_head_sep_units,      use_geom);
		setEnabled(paper_->choice_foot_skip_units,     use_geom);
	}

	switch (data) {
	case INPUT:
	case CHECKCHOICECLASS:
	case CHOICEBULLETSIZE:
	case INPUTBULLETLATEX:
	case BULLETBMTABLE:
		return CheckDocumentInput(ob, 0);
	default:
		break;
	}

	return true;
}


void FormDocument::ComboInputCB(int, void * v, Combox * combox)
{
	FormDocument * pre = static_cast<FormDocument*>(v);
	if (combox == pre->combo_doc_class.get())
		pre->CheckChoiceClass(0, 0);
	pre->bc().valid(pre->CheckDocumentInput(0,0));
}


bool FormDocument::class_apply(BufferParams &params)
{
	bool redo = false;

	// If default skip is a "Length" but there's no text in the
	// input field, reset the kind to "Medskip", which is the default.
	if ((fl_get_choice (class_->choice_doc_skip) == 4) &&
	    !*(fl_get_input (class_->input_doc_skip))) {
		fl_set_choice (class_->choice_doc_skip, 2);
	}
	params.fonts = fl_get_choice_text(class_->choice_doc_fonts);
	params.fontsize = fl_get_choice_text(class_->choice_doc_fontsize);
	params.pagestyle = fl_get_choice_text(class_->choice_doc_pagestyle);

	params.textclass = combo_doc_class->get() - 1;
	
	BufferParams::PARSEP tmpsep = params.paragraph_separation;
	if (fl_get_button(class_->radio_doc_indent))
		params.paragraph_separation = BufferParams::PARSEP_INDENT;
	else
		params.paragraph_separation = BufferParams::PARSEP_SKIP;
	if (tmpsep != params.paragraph_separation)
		redo = true;
	
	VSpace tmpdefskip = params.getDefSkip();
	switch (fl_get_choice (class_->choice_doc_skip)) {
	case 1:
		params.setDefSkip(VSpace(VSpace::SMALLSKIP));
		break;
	case 2:
		params.setDefSkip(VSpace(VSpace::MEDSKIP));
		break;
    	case 3:
	    params.setDefSkip(VSpace(VSpace::BIGSKIP));
	    break;
	case 4:
	{
		string const length =
			getLengthFromWidgets(class_->input_doc_skip,
					     class_->choice_default_skip_units);

		params.setDefSkip(VSpace(LyXGlueLength(length)));
		break;
	}
	default:
		// DocumentDefskipCB assures that this never happens
		params.setDefSkip(VSpace(VSpace::MEDSKIP));
		break;
	}
	if (!(tmpdefskip == params.getDefSkip()))
		redo = true;
	
	if (fl_get_button(class_->radio_doc_columns_two))
		params.columns = 2;
	else
		params.columns = 1;
	if (fl_get_button(class_->radio_doc_sides_two))
		params.sides = LyXTextClass::TwoSides;
	else
		params.sides = LyXTextClass::OneSide;
	
	Spacing tmpSpacing = params.spacing;
	switch (fl_get_choice(class_->choice_doc_spacing)) {
	case 1:
		lyxerr[Debug::INFO] << "Spacing: SINGLE\n";
		params.spacing.set(Spacing::Single);
		break;
	case 2:
		lyxerr[Debug::INFO] << "Spacing: ONEHALF\n";
		params.spacing.set(Spacing::Onehalf);
		break;
	case 3:
		lyxerr[Debug::INFO] << "Spacing: DOUBLE\n";
		params.spacing.set(Spacing::Double);
		break;
	case 4:
		lyxerr[Debug::INFO] << "Spacing: OTHER\n";
		params.spacing.set(Spacing::Other, 
				   fl_get_input(class_->input_doc_spacing));
		break;
	}
	if (tmpSpacing != params.spacing)
		redo = true;
	
	params.options = fl_get_input(class_->input_doc_extra);
	
	return redo;
}


bool FormDocument::class_apply()
{
	BufferParams &params = lv_->buffer()->params;

	unsigned int const old_class = params.textclass;

	bool redo = class_apply(params);

	if (params.textclass != old_class) {
		// try to load new_class
		if (textclasslist.Load(params.textclass)) {
			// successfully loaded
			redo = true;
			setMinibuffer(lv_, _("Converting document to new document class..."));
			int ret = CutAndPaste::SwitchLayoutsBetweenClasses(
				old_class, params.textclass,
				lv_->buffer()->paragraph,
				lv_->buffer()->params);
			if (ret) {
				string s;
				if (ret==1) {
					s = _("One paragraph couldn't be converted");
				} else {
					s += tostr(ret);
					s += _(" paragraphs couldn't be converted");
				}
				Alert::alert(_("Conversion Errors!"),s,
					   _("into chosen document class"));
			}
			
		} else {
			// problem changing class -- warn user and retain old style
			Alert::alert(_("Conversion Errors!"),
				   _("Errors loading new document class."),
				   _("Reverting to original document class."));
			combo_doc_class->select(int(old_class) + 1);
		}
	}
	
	return redo;
}


void FormDocument::paper_apply(BufferParams & params)
{
	params.papersize2 = char(fl_get_choice(paper_->choice_papersize)-1);

	params.paperpackage =
		char(fl_get_choice(paper_->choice_paperpackage)-1);

	// set params.papersize from params.papersize2 and params.paperpackage
	params.setPaperStuff();

	params.use_geometry = fl_get_button(paper_->check_use_geometry);

	if (fl_get_button(paper_->radio_landscape))
		params.orientation = BufferParams::ORIENTATION_LANDSCAPE;
	else
		params.orientation = BufferParams::ORIENTATION_PORTRAIT;

	params.paperwidth =
		getLengthFromWidgets(paper_->input_custom_width,
				     paper_->choice_custom_width_units);

	params.paperheight =
		getLengthFromWidgets(paper_->input_custom_height,
				     paper_->choice_custom_height_units);

	params.leftmargin =
		getLengthFromWidgets(paper_->input_inner_margin,
				     paper_->choice_inner_margin_units);

	params.topmargin =
		getLengthFromWidgets(paper_->input_top_margin,
				     paper_->choice_top_margin_units);

	params.rightmargin =
		getLengthFromWidgets(paper_->input_outer_margin,
				     paper_->choice_outer_margin_units);

	params.bottommargin =
		getLengthFromWidgets(paper_->input_bottom_margin,
				     paper_->choice_bottom_margin_units);

	params.headheight =
		getLengthFromWidgets(paper_->input_head_height,
				     paper_->choice_head_height_units);

	params.headsep =
		getLengthFromWidgets(paper_->input_head_sep,
				     paper_->choice_head_sep_units);

	params.footskip =
		getLengthFromWidgets(paper_->input_foot_skip,
				     paper_->choice_foot_skip_units);
}


void FormDocument::paper_apply()
{
	paper_apply(lv_->buffer()->params);
}


bool FormDocument::language_apply(BufferParams & params)
{
	InsetQuotes::quote_language lga = InsetQuotes::EnglishQ;
	bool redo = false;

	switch (fl_get_choice(language_->choice_quotes_language) - 1) {
	case 0:
		lga = InsetQuotes::EnglishQ;
		break;
	case 1:
		lga = InsetQuotes::SwedishQ;
		break;
	case 2:
		lga = InsetQuotes::GermanQ;
		break;
	case 3:
		lga = InsetQuotes::PolishQ;
		break;
	case 4:
		lga = InsetQuotes::FrenchQ;
		break;
	case 5:
		lga = InsetQuotes::DanishQ;
		break;
	}
	params.quotes_language = lga;
	if (fl_get_button(language_->radio_single))   
		params.quotes_times = InsetQuotes::SingleQ;
	else
		params.quotes_times = InsetQuotes::DoubleQ;

	Language const * old_language = params.language;
	Language const * new_language = 
		languages.getLanguage(combo_language->getline());
	if (!new_language)
		new_language = default_language;

	if (old_language != new_language
	    && old_language->RightToLeft() == params.language->RightToLeft()
	    && !lv_->buffer()->isMultiLingual())
		lv_->buffer()->changeLanguage(old_language, params.language);

	if (old_language != new_language) {
		redo = true;
	}

	params.language = new_language;
	params.inputenc = fl_get_choice_text(language_->choice_inputenc);

	return redo;
}


bool FormDocument::language_apply()
{
	return language_apply(lv_->buffer()->params);
}


bool FormDocument::options_apply(BufferParams & params)
{
	bool redo = false;

	params.graphicsDriver =
		fl_get_choice_text(options_->choice_postscript_driver);
	params.use_amsmath = fl_get_button(options_->check_use_amsmath);
	params.use_natbib  = fl_get_button(options_->check_use_natbib);
	params.use_numerical_citations  =
		fl_get_choice(options_->choice_citation_format)-1;

	int tmpchar = int(fl_get_counter_value(options_->slider_secnumdepth));
	if (params.secnumdepth != tmpchar)
		redo = true;
	params.secnumdepth = tmpchar;
   
	params.tocdepth = int(fl_get_counter_value(options_->slider_tocdepth));

	params.float_placement =
		fl_get_input(options_->input_float_placement);

	return redo;
}


bool FormDocument::options_apply()
{
	return options_apply(lv_->buffer()->params);
}


void FormDocument::bullets_apply(BufferParams & params)
{
	/* update the bullet settings */
	BufferParams & buf_params = lv_->buffer()->params;

	// a little bit of loop unrolling
	params.user_defined_bullets[0] = buf_params.temp_bullets[0];
	params.user_defined_bullets[1] = buf_params.temp_bullets[1];
	params.user_defined_bullets[2] = buf_params.temp_bullets[2];
	params.user_defined_bullets[3] = buf_params.temp_bullets[3];
}


void FormDocument::bullets_apply()
{
	bullets_apply(lv_->buffer()->params);
}


void FormDocument::class_update(BufferParams const & params)
{
	if (!class_.get())
		return;

	LyXTextClass const & tclass = textclasslist.TextClass(params.textclass);

	combo_doc_class->select(
		textclasslist.DescOfClass(params.textclass));
	fl_set_choice_text(class_->choice_doc_fonts, params.fonts.c_str());
	fl_clear_choice(class_->choice_doc_fontsize);
	fl_addto_choice(class_->choice_doc_fontsize, "default");
	fl_addto_choice(class_->choice_doc_fontsize,
			tclass.opt_fontsize().c_str());
	fl_set_choice(class_->choice_doc_fontsize,
		      tokenPos(tclass.opt_fontsize(), '|', params.fontsize)+2);
	fl_clear_choice(class_->choice_doc_pagestyle);
	fl_addto_choice(class_->choice_doc_pagestyle, "default");
	fl_addto_choice(class_->choice_doc_pagestyle,
			tclass.opt_pagestyle().c_str());
	fl_set_choice(class_->choice_doc_pagestyle,
		      tokenPos(tclass.opt_pagestyle(), '|', params.pagestyle)+2);
	fl_set_button(class_->radio_doc_indent, 0);
	fl_set_button(class_->radio_doc_skip, 0);
	if (params.paragraph_separation == BufferParams::PARSEP_INDENT)
		fl_set_button(class_->radio_doc_indent, 1);
	else
		fl_set_button(class_->radio_doc_skip, 1);

	bool const input_length = fl_get_choice(class_->choice_doc_skip) == 4;
	setEnabled(class_->choice_default_skip_units, input_length);
	setEnabled(class_->input_doc_skip, input_length);

	switch (params.getDefSkip().kind()) {
	case VSpace::SMALLSKIP: 
		fl_set_choice (class_->choice_doc_skip, 1);
		break;
	case VSpace::MEDSKIP: 
		fl_set_choice (class_->choice_doc_skip, 2);
		break;
	case VSpace::BIGSKIP: 
		fl_set_choice (class_->choice_doc_skip, 3);
		break;
	case VSpace::LENGTH:
	{
		int const paperchoice = fl_get_choice(paper_->choice_papersize);
		bool const metric = (paperchoice == 1 && lyxrc.default_papersize > 3)
			|| paperchoice == 2 || paperchoice > 5;
		string const default_unit = metric ? "cm" : "in";
		string const length = params.getDefSkip().asLyXCommand();
		updateWidgetsFromLengthString(class_->input_doc_skip,
				      class_->choice_default_skip_units,
				      length, default_unit);
		break;
	}
	default:
		fl_set_choice (class_->choice_doc_skip, 2);
		break;
	}
	fl_set_button(class_->radio_doc_sides_one, 0);
	fl_set_button(class_->radio_doc_sides_two, 0);
	setEnabled(class_->choice_doc_skip,
		   fl_get_button(class_->radio_doc_skip));

	if (params.sides == LyXTextClass::TwoSides)
		fl_set_button(class_->radio_doc_sides_two, 1);
	else
		fl_set_button(class_->radio_doc_sides_one, 1);
	fl_set_button(class_->radio_doc_columns_one, 0);
	fl_set_button(class_->radio_doc_columns_two, 0);
	if (params.columns == 2)
		fl_set_button(class_->radio_doc_columns_two, 1);
	else
		fl_set_button(class_->radio_doc_columns_one, 1);
 
	fl_set_input(class_->input_doc_spacing, "");
	setEnabled(class_->input_doc_spacing, false);

	switch (params.spacing.getSpace()) {
	case Spacing::Default: // nothing bad should happen with this
	case Spacing::Single:
		// \singlespacing
		fl_set_choice(class_->choice_doc_spacing, 1);
		break;
	case Spacing::Onehalf:
		// \onehalfspacing
		fl_set_choice(class_->choice_doc_spacing, 2);
		break;
	case Spacing::Double:
		// \doublespacing
		fl_set_choice(class_->choice_doc_spacing, 3);
		break;
	case Spacing::Other:
	{
		fl_set_choice(class_->choice_doc_spacing, 4);
		char sval[20];
		sprintf(sval,"%g",params.spacing.getValue()); 
		fl_set_input(class_->input_doc_spacing, sval);
		setEnabled(class_->input_doc_spacing, true);
		break;
	}
	}
	if (!params.options.empty())
		fl_set_input(class_->input_doc_extra, params.options.c_str());
	else
		fl_set_input(class_->input_doc_extra, "");
}


void FormDocument::language_update(BufferParams const & params)
{
	if (!language_.get())
		return;

	combo_language->select(params.language->lang());
	fl_set_choice_text(language_->choice_inputenc, params.inputenc.c_str());
	fl_set_choice(language_->choice_quotes_language, params.quotes_language + 1);
	fl_set_button(language_->radio_single, 0);
	fl_set_button(language_->radio_double, 0);
	if (params.quotes_times == InsetQuotes::SingleQ)
		fl_set_button(language_->radio_single, 1);
	else
		fl_set_button(language_->radio_double, 1);
}


void FormDocument::options_update(BufferParams const & params)
{
	if (!options_.get())
		return;

	fl_set_choice_text(options_->choice_postscript_driver,
			   params.graphicsDriver.c_str());
	fl_set_button(options_->check_use_amsmath, params.use_amsmath);
	fl_set_button(options_->check_use_natbib,  params.use_natbib);
	fl_set_choice(options_->choice_citation_format,
		      int(params.use_numerical_citations)+1);
	setEnabled(options_->choice_citation_format, params.use_natbib);
	fl_set_counter_value(options_->slider_secnumdepth, params.secnumdepth);
	fl_set_counter_value(options_->slider_tocdepth, params.tocdepth);
	if (!params.float_placement.empty())
		fl_set_input(options_->input_float_placement,
			     params.float_placement.c_str());
	else
		fl_set_input(options_->input_float_placement, "");
}


void FormDocument::paper_update(BufferParams const & params)
{
	if (!paper_.get())
		return;

	fl_set_choice(paper_->choice_papersize, params.papersize2 + 1);
	fl_set_choice(paper_->choice_paperpackage, params.paperpackage + 1);
	fl_set_button(paper_->check_use_geometry, params.use_geometry);

	int const paperchoice = fl_get_choice(paper_->choice_papersize);
	bool const useCustom = paperchoice == 2;
	bool const useGeom = fl_get_button(paper_->check_use_geometry);

	fl_set_button(paper_->radio_portrait, 0);
	setEnabled(paper_->radio_portrait, !useCustom);
	fl_set_button(paper_->radio_landscape, 0);
	setEnabled(paper_->radio_landscape, !useCustom);

	if (params.orientation == BufferParams::ORIENTATION_LANDSCAPE)
		fl_set_button(paper_->radio_landscape, 1);
	else
		fl_set_button(paper_->radio_portrait, 1);
	setEnabled(paper_->choice_paperpackage,
		   //either default papersize (preferences)
		   //or document papersize has to be A4
		   (paperchoice == 7
		    || paperchoice == 1 && lyxrc.default_papersize == 5)
		   && fl_get_button(paper_->radio_portrait));

	// Default unit choice is cm if metric, inches if US paper.
	bool const metric = (paperchoice == 1 && lyxrc.default_papersize > 3)
			|| paperchoice == 2 || paperchoice > 5;
	string const default_unit = metric ? "cm" : "in";
	updateWidgetsFromLengthString(paper_->input_custom_width,
			      paper_->choice_custom_width_units,
			      params.paperwidth, default_unit);
	setEnabled(paper_->input_custom_width, useCustom);
	setEnabled(paper_->choice_custom_width_units, useCustom);

	updateWidgetsFromLengthString(paper_->input_custom_height,
				      paper_->choice_custom_height_units,
				      params.paperheight, default_unit);
	setEnabled(paper_->input_custom_height, useCustom);
	setEnabled(paper_->choice_custom_height_units, useCustom);

	updateWidgetsFromLengthString(paper_->input_inner_margin,
				      paper_->choice_inner_margin_units,
				      params.leftmargin, default_unit);
	setEnabled(paper_->input_inner_margin, useGeom);
	setEnabled(paper_->choice_inner_margin_units, useGeom);

	updateWidgetsFromLengthString(paper_->input_top_margin,
				      paper_->choice_top_margin_units,
				      params.topmargin, default_unit);
	setEnabled(paper_->input_top_margin, useGeom);
	setEnabled(paper_->choice_top_margin_units, useGeom);

	updateWidgetsFromLengthString(paper_->input_outer_margin,
				      paper_->choice_outer_margin_units,
				      params.rightmargin, default_unit);
	setEnabled(paper_->input_outer_margin, useGeom);
	setEnabled(paper_->choice_outer_margin_units, useGeom);

	updateWidgetsFromLengthString(paper_->input_bottom_margin,
				      paper_->choice_bottom_margin_units,
				      params.bottommargin, default_unit);
	setEnabled(paper_->input_bottom_margin, useGeom);
	setEnabled(paper_->choice_bottom_margin_units, useGeom);

	updateWidgetsFromLengthString(paper_->input_head_height,
				      paper_->choice_head_height_units,
				      params.headheight, default_unit);
	setEnabled(paper_->input_head_height, useGeom);
	setEnabled(paper_->choice_head_height_units, useGeom);

	updateWidgetsFromLengthString(paper_->input_head_sep,
				      paper_->choice_head_sep_units,
				      params.headsep, default_unit);
	setEnabled(paper_->input_head_sep, useGeom);
	setEnabled(paper_->choice_head_sep_units, useGeom);

	updateWidgetsFromLengthString(paper_->input_foot_skip,
				      paper_->choice_foot_skip_units,
				      params.footskip, default_unit);
	setEnabled(paper_->input_foot_skip, useGeom);
	setEnabled(paper_->choice_foot_skip_units, useGeom);

	fl_set_focus_object(paper_->form, paper_->choice_papersize);
}


void FormDocument::bullets_update(BufferParams const & params)
{
	if (!bullets_.get() ||
	    ((XpmVersion<4) ||
	     (XpmVersion==4 && XpmRevision<7)))
		return;

	bool const isLinuxDoc = lv_->buffer()->isLinuxDoc();
	setEnabled(fbullet, !isLinuxDoc);

	if (isLinuxDoc) return;

	fl_set_button(bullets_->radio_bullet_depth_1, 1);
	fl_set_input(bullets_->input_bullet_latex,
		     params.user_defined_bullets[0].getText().c_str());
	fl_set_choice(bullets_->choice_bullet_size,
		      params.user_defined_bullets[0].getSize() + 2);
}


void FormDocument::checkReadOnly()
{
	if (bc().readOnly(lv_->buffer()->isReadonly())) {
		combo_doc_class->deactivate();
		combo_language->deactivate();
		fl_set_object_label(dialog_->text_warning,
				    _("Document is read-only."
				      " No changes to layout permitted."));
		fl_show_object(dialog_->text_warning);
	} else {
		combo_doc_class->activate();
		combo_language->activate();
		fl_hide_object(dialog_->text_warning);
	}
}


bool FormDocument::CheckDocumentInput(FL_OBJECT * ob, long)
{
	string str;
	bool ok = true;
	char const * input;

	// this has to be all out of if/elseif because it has to deactivate
	// the document buttons and so the whole stuff has to be tested again.
	// disable OK/Apply if input is not valid
	str = fl_get_input(class_->input_doc_skip);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_custom_width);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_custom_height);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_outer_margin);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_inner_margin);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_top_margin);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_bottom_margin);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_head_height);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_head_sep);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));
	str = fl_get_input(paper_->input_foot_skip);
	ok = ok && (str.empty() || isValidLength(str) || isStrDbl(str));

	//display warning if input is not valid
	if (ob == class_->input_doc_skip
			|| ob == paper_->input_custom_width
			|| ob == paper_->input_custom_height
			|| ob == paper_->input_outer_margin
			|| ob == paper_->input_inner_margin
			|| ob == paper_->input_top_margin
			|| ob == paper_->input_bottom_margin
			|| ob == paper_->input_head_height
			|| ob == paper_->input_head_sep
			|| ob == paper_->input_foot_skip) {
		if (!ok) {
			fl_set_object_label(dialog_->text_warning,
                		_("Warning: Invalid Length (valid example: 10mm)"));
			fl_show_object(dialog_->text_warning);
			return false;
        	} else {
			fl_hide_object(dialog_->text_warning);
			return true;
		}
	}

	// "Synchronize" the choice and the input field, so that it
	// is impossible to commit senseless data.
	input = fl_get_input (class_->input_doc_skip);
	if ((fl_get_choice(class_->choice_doc_skip) == 4) && !*input)
		ok = false;
	else if (fl_get_choice(class_->choice_doc_skip) != 4)
		fl_set_input (class_->input_doc_skip, "");

	input = fl_get_input(class_->input_doc_spacing);
	if ((fl_get_choice(class_->choice_doc_spacing) == 4) && !*input)
		ok = false;
	else if (fl_get_choice(class_->choice_doc_spacing) != 4)
		fl_set_input (class_->input_doc_spacing, "");
	return ok;
}


void FormDocument::ChoiceBulletSize(FL_OBJECT * ob, long /*data*/)
{
	BufferParams & param = lv_->buffer()->params;

	// convert from 1-6 range to -1-4 
	param.temp_bullets[current_bullet_depth].setSize(fl_get_choice(ob) - 2);
	fl_set_input(bullets_->input_bullet_latex,
		     param.temp_bullets[current_bullet_depth].getText().c_str());
}


void FormDocument::InputBulletLaTeX(FL_OBJECT *, long)
{
	BufferParams & param = lv_->buffer()->params;

	param.temp_bullets[current_bullet_depth].
		setText(fl_get_input(bullets_->input_bullet_latex));
}


void FormDocument::BulletDepth(FL_OBJECT * ob, State cb)
{
	/* Should I do the following:                                 */
	/*  1. change to the panel that the current bullet belongs in */
	/*  2. show that bullet as selected                           */
	/*  3. change the size setting to the size of the bullet in Q.*/
	/*  4. display the latex equivalent in the latex box          */
	/*                                                            */
	/* I'm inclined to just go with 3 and 4 at the moment and     */
	/* maybe try to support the others later                      */
	BufferParams & param = lv_->buffer()->params;

	int data = 0;
	if (cb == BULLETDEPTH1)
		data = 0;
	else if (cb == BULLETDEPTH2)
		data = 1;
	else if (cb == BULLETDEPTH3)
		data = 2;
	else if (cb == BULLETDEPTH4)
		data = 3;

	switch (fl_get_button_numb(ob)) {
	case 3:
		// right mouse button resets to default
		param.temp_bullets[data] = ITEMIZE_DEFAULTS[data];
	default:
		current_bullet_depth = data;
		fl_set_input(bullets_->input_bullet_latex,
			     param.temp_bullets[data].getText().c_str());
		fl_set_choice(bullets_->choice_bullet_size,
			      param.temp_bullets[data].getSize() + 2);
	}
}


void FormDocument::BulletPanel(FL_OBJECT * /*ob*/, State cb)
{
	/* Here we have to change the background pixmap to that selected */
	/* by the user. (eg. standard.xpm, psnfss1.xpm etc...)           */
    
	int data = 0;
	if (cb == BULLETPANEL1)
		data = 0;
	else if (cb == BULLETPANEL2)
		data = 1;
	else if (cb == BULLETPANEL3)
		data = 2;
	else if (cb == BULLETPANEL4)
		data = 3;
	else if (cb == BULLETPANEL5)
		data = 4;
	else if (cb == BULLETPANEL6)
		data = 5;

	if (data != current_bullet_panel) {
		fl_freeze_form(bullets_->form);
		current_bullet_panel = data;

		/* free the current pixmap */
		fl_free_bmtable_pixmap(bullets_->bmtable_bullet_panel);
		string new_panel;
		switch (cb) {
			/* display the new one */
		case BULLETPANEL1 :
			new_panel = "standard";
			break;
		case BULLETPANEL2 :
			new_panel = "amssymb";
			break;
		case BULLETPANEL3 :
			new_panel = "psnfss1";
			break;
		case BULLETPANEL4 :
			new_panel = "psnfss2";
			break;
		case BULLETPANEL5 :
			new_panel = "psnfss3";
			break;
		case BULLETPANEL6 :
			new_panel = "psnfss4";
			break;
		default :
			/* something very wrong happened */
			// play it safe for now but should be an exception
			current_bullet_panel = 0;  // standard panel
			new_panel = "standard";
			break;
		}
		new_panel += ".xpm";
		fl_set_bmtable_pixmap_file(bullets_->bmtable_bullet_panel, 6, 6,
					   LibFileSearch("images", new_panel).c_str());
		fl_redraw_object(bullets_->bmtable_bullet_panel);
		fl_unfreeze_form(bullets_->form);
	}
}


void FormDocument::BulletBMTable(FL_OBJECT * ob, long /*data*/)
{
	/* handle the user input by setting the current bullet depth's pixmap */
	/* to that extracted from the current chosen position of the BMTable  */
	/* Don't forget to free the button's old pixmap first.                */
	
	BufferParams & param = lv_->buffer()->params;
	int bmtable_button = fl_get_bmtable(ob);
	
	/* try to keep the button held down till another is pushed */
	/*  fl_set_bmtable(ob, 1, bmtable_button); */
	param.temp_bullets[current_bullet_depth].setFont(current_bullet_panel);
	param.temp_bullets[current_bullet_depth].setCharacter(bmtable_button);
	fl_set_input(bullets_->input_bullet_latex,
		     param.temp_bullets[current_bullet_depth].getText().c_str());
}


void FormDocument::CheckChoiceClass(FL_OBJECT * ob, long)
{
	if (!ob)
		ob = class_->choice_doc_class;

	lv_->prohibitInput();

	unsigned int tc = combo_doc_class->get() - 1;
	if (textclasslist.Load(tc)) {
		// we use a copy of the bufferparams because we do not
		// want to modify them yet.
		BufferParams params = lv_->buffer()->params;

		if (lyxrc.auto_reset_options) {
			params.textclass = tc;
			params.useClassDefaults();
			UpdateLayoutDocument(params);
		}
	} else {
		// unable to load new style
		Alert::alert(_("Conversion Errors!"),
			   _("Unable to switch to new document class."),
			   _("Reverting to original document class."));
		combo_doc_class->select(int(lv_->buffer()->params.textclass) + 1);
	}
	lv_->allowInput();
}


void FormDocument::UpdateLayoutDocument(BufferParams const & params)
{
	if (!dialog_.get())
		return;

	checkReadOnly();
	class_update(params);
	paper_update(params);
	language_update(params);
	options_update(params);
	bullets_update(params);
}