// -*- C++ -*-
/* This file is part of
 * ======================================================
 *
 *           LyX, The Document Processor
 *
 *           Copyright 2000 The LyX Team.
 *
 * ======================================================
 *
 * \author Angus Leeming <a.leeming@ic.ac.uk>
 */

#include <config.h>

#ifdef __GNUG__
#pragma implementation
#endif

#include "FormCitationDialogImpl.h"
#include "FormCitation.h"

#include <qcheckbox.h>
#include <qcombobox.h>
#include <qlineedit.h>
#include <qlistbox.h>
#include <qmultilineedit.h>
#include <qpushbutton.h>

#undef emit
#include "qt2BC.h"
#include "ControlCitation.h"
#include "gettext.h"
#include "support/lstrings.h"
#include "helper_funcs.h"


using std::find;
using std::max;
using std::min;
using std::pair;
using std::sort;
using std::vector;

typedef Qt2CB<ControlCitation, Qt2DB<FormCitationDialogImpl> > base_class;

FormCitation::FormCitation(ControlCitation & c)
    : base_class(c, _("Citation"))
{}


void FormCitation::apply()
{
    controller().params().setCmdName("cite");
    controller().params().setContents(getStringFromVector(citekeys));
    
    string const after  = dialog_->textAfterED->text().latin1();
    controller().params().setOptions(after);
}


void FormCitation::hide()
{
    citekeys.clear();
    bibkeys.clear();
    
    Qt2Base::hide();
}


void FormCitation::build()
{
    // PENDING(kalle) Parent?
    dialog_.reset( new FormCitationDialogImpl( this ));

    dialog_->searchTypeCB->setChecked( false );
    dialog_->searchCaseCB->setChecked( false );
    
    // Manage the ok, apply, restore and cancel/close buttons
    bc().setOK(dialog_->okPB);
    bc().setApply(dialog_->applyPB);
    bc().setCancel(dialog_->cancelPB);
    bc().setRestore(dialog_->restorePB);

    bc().addReadOnly(dialog_->addPB);
    bc().addReadOnly(dialog_->delPB);
    bc().addReadOnly(dialog_->upPB);
    bc().addReadOnly(dialog_->downPB);
    bc().addReadOnly(dialog_->citationStyleCO);
    bc().addReadOnly(dialog_->textBeforeED);
    bc().addReadOnly(dialog_->textAfterED);

    bc().refresh();
}	


void FormCitation::update()
{
    // Make the list of all available bibliography keys
    bibkeys = biblio::getKeys(controller().bibkeysInfo());
    updateBrowser(dialog_->bibLB, bibkeys);
    
    // Ditto for the keys cited in this inset
    citekeys = getVectorFromString(controller().params().getContents());
    updateBrowser(dialog_->citeLB, citekeys);

    // No keys have been selected yet, so...
    dialog_->infoML->clear();
    setBibButtons(OFF);
    setCiteButtons(OFF);

    int noKeys = int(max(bibkeys.size(), citekeys.size()));

    // Place bounds, so that 4 <= noKeys <= 10
    noKeys = max(4, min(10, noKeys));

    dialog_->textAfterED->setText( controller().params().getOptions().c_str());
}


void FormCitation::updateBrowser( QListBox* browser,
				  vector<string> const & keys) const
{
    browser->clear();

    for (vector<string>::const_iterator it = keys.begin();
	 it < keys.end(); ++it) {
	string key = frontStrip(strip(*it));
	if( !key.empty() )
	    browser->insertItem( key.c_str() );
    }
}


void FormCitation::setBibButtons(State status) const
{
    dialog_->addPB->setEnabled( (status == ON) );
}


void FormCitation::setCiteButtons(State status) const
{
    int const sel     = dialog_->citeLB->currentItem();
    int const maxline = dialog_->citeLB->count()-1;
    bool const activate      = (status == ON);
    bool const activate_up   = (activate && sel != 0);
    bool const activate_down = (activate && sel != maxline);

    dialog_->delPB->setEnabled( activate );
    dialog_->upPB->setEnabled( activate_up );
    dialog_->downPB->setEnabled( activate_down );
}