lyx_mirror/src/frontends/xforms/FormBibtex.C

/**
 * \file FormBibtex.C
 * Copyright 2001 the LyX Team
 * Read the file COPYING
 *
 * \author Angus Leeming
 * \author John Levon
 * \author Herbert Voss <voss@lyx.org>
 */

#ifdef __GNUG__
#pragma implementation
#endif

#include <config.h>
#include "xformsBC.h"
#include "ControlBibtex.h"
#include "FormBibtex.h"
#include "form_bibtex.h"
#include "gettext.h"
#include "debug.h"
#include "xforms_helpers.h"
#include "helper_funcs.h"
#include "support/LAssert.h"
#include "support/lstrings.h"
#include "support/filetools.h"


typedef FormCB<ControlBibtex, FormDB<FD_form_bibtex> > base_class;

FormBibtex::FormBibtex(ControlBibtex & c)
	: base_class(c, _("BibTeX Database"))
{}


void FormBibtex::build()
{
	dialog_.reset(build_bibtex());

	fl_set_input_return(dialog_->database, FL_RETURN_CHANGED);
	fl_set_input_return(dialog_->style, FL_RETURN_CHANGED);

        // Manage the ok, apply, restore and cancel/close buttons
	bc().setOK(dialog_->button_ok);
	bc().setCancel(dialog_->button_cancel);

	bc().addReadOnly(dialog_->database_browse);
	bc().addReadOnly(dialog_->database);
	bc().addReadOnly(dialog_->style_browse);
	bc().addReadOnly(dialog_->style);
	bc().addReadOnly(dialog_->radio_bibtotoc);

	// set up the feedback mechanism
	setPrehandler(dialog_->database_browse);
	setPrehandler(dialog_->database);
	setPrehandler(dialog_->style_browse);
	setPrehandler(dialog_->style);
	setPrehandler(dialog_->radio_bibtotoc);
}


ButtonPolicy::SMInput FormBibtex::input(FL_OBJECT * ob, long)
{
	if (ob == dialog_->database_browse) {
		// When browsing, take the first file only 
		string const in_name = fl_get_input(dialog_->database);
		string out_name = 
			controller().Browse("",
					    "Select Database",
					    "*.bib| BibTeX Databases (*.bib)");
		if (!out_name.empty()) {
			// add the database to any existing ones
			if (!in_name.empty())
				out_name = in_name + ", " + out_name;

			fl_freeze_form(form()); 
			fl_set_input(dialog_->database, out_name.c_str());
			fl_unfreeze_form(form()); 
		}
	}

	if (ob == dialog_->style_browse) {
		string const in_name = fl_get_input(dialog_->style);
		string out_name = 
			controller().Browse(in_name,
					    "Select BibTeX-Style",
					    "*.bst| BibTeX Styles (*.bst)");
		if (!out_name.empty()) {
			fl_freeze_form(form()); 
			fl_set_input(dialog_->style, out_name.c_str());
			fl_unfreeze_form(form()); 
		}
	}
  
	if (!compare(fl_get_input(dialog_->database),"")) {
		return ButtonPolicy::SMI_NOOP;
	}

	return ButtonPolicy::SMI_VALID;
}


void FormBibtex::update()
{
	fl_set_input(dialog_->database,
		     controller().params().getContents().c_str());
        string bibtotoc = "bibtotoc";
	string bibstyle (controller().params().getOptions().c_str());
	if (prefixIs(bibstyle,bibtotoc)) { // bibtotoc exists?
		fl_set_button(dialog_->radio_bibtotoc,1);
		if (contains(bibstyle,',')) { // bibstyle exists?
			bibstyle = split(bibstyle,bibtotoc,',');
		} else {
			bibstyle = "";
		}

		fl_set_input(dialog_->style,bibstyle.c_str());

	} else {
		fl_set_button(dialog_->radio_bibtotoc,0);
		fl_set_input(dialog_->style,bibstyle.c_str());
	}
}

namespace {

// Remove all duplicate entries in c.
// Taken stright out of Stroustrup
template<class C> void eliminate_duplicates(C & c)
{
	std::sort(c.begin(), c.end()); // sort
	typename C::iterator p = std::unique(c.begin(), c.end()); // compact
	c.erase(p, c.end()); // shrink
}

string const unique_and_no_extensions(string const & str_in)
{
	std::vector<string> dbase = getVectorFromString(str_in);
	for (std::vector<string>::iterator it = dbase.begin();
	     it != dbase.end(); ++it) {
		*it = ChangeExtension(*it, "");
	}
	eliminate_duplicates(dbase);
	return subst(getStringFromVector(dbase),",",", ");
}
 
} // namespace anon


void FormBibtex::apply()
{
	string const db = fl_get_input(dialog_->database);
	if (db.empty()) {
		// no database -> no bibtex-command and no options!
		controller().params().setContents("");
		controller().params().setOptions("");
		return;
	}
	
	controller().params().setContents(unique_and_no_extensions(db));

	// empty is valid!
	string bibstyle = fl_get_input(dialog_->style);
	if (!bibstyle.empty()) {
		// save the BibTeX style without any ".bst" extension
		bibstyle = ChangeExtension(OnlyFilename(bibstyle), "");
	}

	bool const bibtotoc = fl_get_button(dialog_->radio_bibtotoc);
	
	if (bibtotoc && (!bibstyle.empty())) {
		// both bibtotoc and style
		controller().params().setOptions("bibtotoc,"+bibstyle);

	} else if (bibtotoc) {
		// bibtotoc and no style
		controller().params().setOptions("bibtotoc");

	} else if (!bibstyle.empty()){
		// only style
		controller().params().setOptions(bibstyle);
	}
}

void FormBibtex::clear_feedback()
{
	fl_set_object_label(dialog_->text_info, "");
	fl_redraw_object(dialog_->text_info);
}

void FormBibtex::feedback(FL_OBJECT * ob)
{
	lyx::Assert(ob);

	string str;

	if (ob == dialog_->database) {
		str = N_("The database you want to cite from. Insert it without the default extension \".bib\". If you insert it with the browser, LyX strips the extension. Several databases must be separated by a comma: \"natbib, books\".");

	} else if (ob == dialog_->database_browse) {
		str = _("Browse your directory for BibTeX databases.");

	} else if (ob == dialog_->style) {
		str = _("The BibTeX style to use (only one allowed). Insert it without the default extension \".bst\" and without path. Most of the bibstyles are stored in $TEXMF/bibtex/bst. $TEXMF is the root dir of the local TeX tree. In \"Help->TeX Info\" you can list all installed styles.");

	} else if (ob == dialog_->style_browse) {
		str = _("Browse your directory for BibTeX stylefiles.");

	} else if (ob == dialog_->radio_bibtotoc) {
		str = _("Activate this option if you want the bibliography to appear in the Table of Contents (which doesn't happen by default).");
	}

	str = formatted(_(str), dialog_->text_info->w-10, FL_SMALL_SIZE);

	fl_set_object_label(dialog_->text_info, str.c_str());
	fl_set_object_lsize(dialog_->text_info, FL_SMALL_SIZE);
	fl_redraw_object(dialog_->text_info);
}