// -*- C++ -*-
/*
 * \file ControlInset.tmpl
 * Copyright 2002 the LyX Team
 * Read the file COPYING
 *
 * \author Angus Leeming <leeming@lyx.org>
 *
 * ControlInset is a base class and so these templatised methods will be
 * instantiated if this file is #included in the derived classes' .C file.
 */

#include "ControlInset.h"

#include "ButtonControllerBase.h"
#include "ViewBase.h"
#include "support/LAssert.h"

#include <boost/bind.hpp>

template <class Inset, class Params>
ControlInset<Inset, Params>::ControlInset(LyXView & lv, Dialogs & d)
	: ControlConnectBD(lv, d),
	  inset_(0), params_(0), dialog_built_(false)
{}


template <class Inset, class Params>
void ControlInset<Inset, Params>::showInset(Inset * inset)
{
	if (inset == 0) return;  // maybe we should Assert this?

	connectInset(inset);
	show(getParams(*inset));
}


template <class Inset, class Params>
void ControlInset<Inset, Params>::createInset(string const & arg)
{
	connectInset();

	if (!arg.empty())
		bc().valid(); // so that the user can press Ok

	show(getParams(arg));
}


template <class Inset, class Params>
void ControlInset<Inset, Params>::show(Params const & params)
{
	// paranoia check
	if (params_) delete params_;

	params_ = new Params(params);
	setDaughterParams();

	if (emergency_exit_) {
		hide();
		return;
	}

	if (!dialog_built_) {
		view().build();
		dialog_built_ = true;
	}

	bc().readOnly(bufferIsReadonly());
	view().show();
}


template <class Inset, class Params>
void ControlInset<Inset, Params>::update()
{
	// paranoia check
	if (params_) delete params_;

	if (inset_)
		params_ = new Params(getParams(*inset_));
	else
		params_ = new Params();

	if (emergency_exit_) {
		hide();
		return;
	}

	bc().readOnly(bufferIsReadonly());
	view().update();
}


template <class Inset, class Params>
void ControlInset<Inset, Params>::hide()
{
	emergency_exit_ = false;
	if (params_) {
		delete params_;
		params_ = 0;
	}
	inset_ = 0;

	clearDaughterParams();

	ih_.disconnect();
	disconnect();
	view().hide();
}


template <class Inset, class Params>
void ControlInset<Inset, Params>::apply()
{
	if (bufferIsReadonly())
		return;

	view().apply();

	if (inset_) {
		if (params() != getParams(*inset_)) {
			applyParamsToInset();
		}
	} else {
		applyParamsNoInset();
	}

	if (disconnectOnApply() && !isClosing()) {
		*params_ = getParams(string());
		inset_ = 0;
		ih_.disconnect();

		view().update();
	}
}


template <class Inset, class Params>
Params & ControlInset<Inset, Params>::params()
{
	lyx::Assert(params_);
	return *params_;
}


template <class Inset, class Params>
Params  const & ControlInset<Inset, Params>::params() const
{
	lyx::Assert(params_);
	return *params_;
}


template <class Inset, class Params>
Inset * ControlInset<Inset, Params>::inset() const
{
	lyx::Assert(inset_);
	return inset_;
}


template <class Inset, class Params>
void ControlInset<Inset, Params>::updateSlot(bool switched)
{
	if (switched)
		hide();
	else
		update();
}


template <class Inset, class Params>
void ControlInset<Inset, Params>::connectInset(Inset * inset)
{
	// If connected to another inset, disconnect from it.
	if (inset_) {
		ih_.disconnect();
		inset_ = 0;
	}

	if (inset) {
		inset_ = inset;
		ih_ = inset->hideDialog.connect(
			boost::bind(&ControlInset::hide, this));
	}
	connect();
}