/*
 * Copyright 2005-2007 Gerald Schmidt.
 *
 * This file is part of Xml Copy Editor.
 *
 * Xml Copy Editor is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * Xml Copy Editor is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Xml Copy Editor; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "insertpanel.h"

BEGIN_EVENT_TABLE ( InsertPanel, wxPanel )
	EVT_TEXT_ENTER ( wxID_ANY, InsertPanel::OnEnter )
	EVT_LISTBOX_DCLICK ( wxID_ANY, InsertPanel::OnDoubleClick )
	EVT_LISTBOX ( wxID_ANY, InsertPanel::OnListSelection )
	EVT_SIZE ( InsertPanel::OnSize )
END_EVENT_TABLE()

InsertPanel::InsertPanel (
    wxWindow *parentWindowParameter,
    int id,
    int typeParameter ) :
		wxPanel ( parentWindowParameter, id ), type ( typeParameter ), edit ( 0 ), list ( 0 )
{
	parentWindow = ( MyFrame * ) parentWindowParameter;
	doc = lastDoc = NULL;
	int width = 150;
	SetSize ( wxSize ( width, -1 ) );

	sizer = new wxBoxSizer ( wxVERTICAL );
	SetSizer ( sizer );

	edit = new wxTextCtrl (
	    this,
	    wxID_ANY,
	    wxEmptyString,
	    wxDefaultPosition,
	    wxDefaultSize,
	    wxTE_PROCESS_ENTER );

	wxFont normalFont = wxSystemSettings::GetFont ( wxSYS_DEFAULT_GUI_FONT );
	wxFont boldFont = normalFont;
	boldFont.SetWeight ( wxFONTWEIGHT_BOLD );
	edit->SetFont ( boldFont );

	list = new wxListBox (
	    this,
	    wxID_ANY,
	    wxDefaultPosition,
	    wxDefaultSize,
	    0,
	    NULL,
	    wxLB_SORT | wxLB_HSCROLL );

	sizer->Add ( edit, 0, wxGROW | wxTOP, 0 );
	sizer->Add ( list, 1, wxGROW | wxTOP, 0 );
	sizer->Layout();
	list->Show ( false );
}

void InsertPanel::update (
    XmlDoc *docParameter,
    const wxString& parentParameter,
    const wxString& grandparentParameter )
{
	doc = docParameter;
	parent = parentParameter;
	grandparent = grandparentParameter;

	if ( !doc )
	{
		if ( lastDoc )
		{
			lastDoc = NULL;
			edit->SetValue ( wxEmptyString );
			list->Clear();
			list->Show ( false );
		}
		return;
	}

	bool refreshEntities = false;
	if ( doc != lastDoc )
	{
		refreshEntities = true;
		lastDoc = doc;
	}

	if ( type == INSERT_PANEL_TYPE_ENTITY && refreshEntities )
	{
		list->Clear();
		lastDoc = doc;
		const std::set<wxString> &entitySet = doc->getEntitySet();
		std::set<wxString>::const_iterator it;
		for ( it = entitySet.begin(); it != entitySet.end(); ++it )
			list->Append ( *it );
		list->Show ( true );
		sizer->Layout();
		return;
	}

	if ( parent == lastParent )
		return;
	lastParent = parent;


	if ( type == INSERT_PANEL_TYPE_CHILD ) // ignore for entity/sibling
	{
		doc->toggleLineBackground();
	}

	edit->SetValue ( wxEmptyString );
	list->Clear();
	if ( parent.empty() || ( ( type == INSERT_PANEL_TYPE_SIBLING ) && grandparent.empty() ) )
	{
		list->Show ( false );
		return;
	}

	const std::set<wxString> &elementSet = doc->getChildren (
	            ( type == INSERT_PANEL_TYPE_SIBLING ) ? grandparent : parent );
	if ( elementSet.empty() )
	{
		list->Show ( false );
		return;
	}
	std::set<wxString>::const_iterator it;
	for ( it = elementSet.begin(); it != elementSet.end(); ++it )
		list->Append ( *it );
	list->Show ( true );
	sizer->Layout();
}

void InsertPanel::OnEnter ( wxCommandEvent& event )
{
	if ( !doc )
		return;

	wxString choice = edit->GetValue();
	if ( choice.empty() )
		doc->SetFocus();
	else
		handleChoice ( choice );
}

void InsertPanel::OnDoubleClick ( wxCommandEvent& event )
{
	if ( !doc )
		return;

	if ( !doc )
		return;

	wxString choice = list->GetStringSelection();
	handleChoice ( choice );
}

void InsertPanel::handleChoice ( const wxString& choice )
{
	if ( !doc || choice.empty() )
		return;

	if ( parentWindow )
		parentWindow->closeMessagePane();

	switch ( type )
	{
		case INSERT_PANEL_TYPE_SIBLING:
			if ( !parent.empty() )
			{
				if ( !doc->insertSibling ( choice, parent ) && parentWindow )
				{
					wxString msg;
					msg.Printf ( _T ( "Cannot insert sibling '%s'" ), choice.c_str() );
					parentWindow->messagePane ( msg, CONST_STOP );
				}
			}
			break;
		case INSERT_PANEL_TYPE_CHILD:
			if ( !doc->insertChild ( choice ) && parentWindow )
			{
				wxString msg;
				msg.Printf ( _T ( "Cannot insert child '%s'" ), choice.c_str() );
				parentWindow->messagePane ( msg, CONST_STOP );
			}
			break;
		case INSERT_PANEL_TYPE_ENTITY:
			if ( !doc->insertEntity ( choice ) && parentWindow )
			{
				wxString msg;
				msg.Printf ( _T ( "Cannot insert entity '%s'" ), choice.c_str() );
				parentWindow->messagePane ( msg, CONST_STOP );
			}
			break;
		default:
			break;
	}
	doc->setValidationRequired ( true );
	doc->SetFocus();
}

void InsertPanel::setEditFocus()
{
	if ( !edit )
		return;
	edit->SetFocus();
}

void InsertPanel::OnListSelection ( wxCommandEvent& event )
{
	edit->SetValue ( list->GetStringSelection() );
}

void InsertPanel::OnSize ( wxSizeEvent& e )
{
	adjustSize();
	e.Skip();
}

void InsertPanel::adjustSize()
{
	if ( !list || !edit )
		return;

	wxSize clientSize = GetClientSize();
	wxSize editSize = edit->GetSize();

	if ( !clientSize.IsFullySpecified() || !editSize.IsFullySpecified() )
		return;

	wxSize listSize =
	    wxSize ( clientSize.GetWidth(), clientSize.GetHeight() - editSize.GetHeight() );
	if ( listSize.IsFullySpecified() )
		list->SetSizeHints ( listSize, listSize, listSize );
}