/***************************************************************************
 *                                                                         *
 *   begin        : 15 Jan 2004                                            *
 *   copyright    : (C) 2003 by Samokhvalov Anton <red____hat@mail.ru> :)  *
 *                                                                         *
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include <chmxx.h>

#include <khtml_part.h>
#include <khtmlview.h>
#include <kstdaction.h>
#include <kapplication.h>
#include <kclipboard.h>
#include <kaction.h>
#include <kpopupmenu.h>
#include <kshortcut.h>

#include "MainView.h"
#include "HtmlView.h"
#include "TopicLeaf.h"
#include "TopicTree.h"
#include "Def.h"
#include "History.h"

HtmlView::HtmlView( const QString& f_name, KActionCollection* ac,
	QWidget* parent, MainView* parent1, const char* name ):
	KHTMLPart( parent, name ),
	d_fname( f_name ),
	d_parent( parent1 ),
	d_popup( 0 ),
	d_ac( ac ),
	d_copy( d_ac->action( "edit_copy" ) ),
	d_copy_url( d_ac->action( "edit_copy_url" ) ),
	d_select_all( d_ac->action( "edit_select_all" ) ),
	d_topic_tree( parent1->getTopicTree() ),
	d_last_node( 0 )
{
	d_history = new History();
	
	connect( d_history, SIGNAL(changeUrl(const KURL&)), this, SLOT(slotSetUrl(const KURL&)) );
	connect( this, SIGNAL(onURL(const  QString&)), this, SLOT(slotOnURL(const QString&)) );
	connect( this, SIGNAL(popupMenu(const QString&,const QPoint&)), this, SLOT(slotPopupMenu(const QString&,const QPoint&)) );
	connect( this, SIGNAL(selectionChanged()), this, SLOT(slotSelectionChanged()) );
}

HtmlView::~HtmlView()
{
	delete d_history;
}

//to history
void HtmlView::slotSetUrl( QListViewItem* item_ )
{
	if ( item_ )
	{
		TopicLeaf* item = static_cast<TopicLeaf*>( item_ );
		d_last_node = item;

		KURL u = KURL( "chm:" + d_fname + item->path.c_str() );
		d_history->add( u );
		d_parent->setStatusBarMessage( u.fileName() );
		setUrl( u );
		
		emit setCaption( this, item->text( 0 ) );
	}
}

//not to history
void HtmlView::slotSetUrl( const KURL& url )
{
	QString p = url.path();
	
	if ( p.startsWith( d_fname ) )
	{
		p = p.mid( d_fname.length() );
	
		TopicLeaf* tl = d_topic_tree->find( p );
		if ( tl )
		{
			d_last_node = tl;
			
			d_topic_tree->ensureItemVisible( tl );
			d_history->setEnabled( false );
			d_topic_tree->setCurrentItem( tl );
			d_history->setEnabled( true );
			
			emit setCaption( this, tl->text( 0 ) );
			
			return;
		}
	}

	setUrl( url );
}

void HtmlView::urlSelected( const QString &url, int /*button*/, int /*state*/, const QString& /*_target*/, KParts::URLArgs /*args*/ )
{	
	KURL u = completeURL( url );
	d_history->add( u );

	slotSetUrl( u );
}

void HtmlView::setUrl( const KURL& url )
{
	preloadStyleSheet( url.path(), "p { text-align: justify; }" );
	openURL( url );
}

void HtmlView::up()
{
	d_history->up();
}

void HtmlView::back()
{
	d_history->back();
}

void HtmlView::forward()
{
	d_history->forward();
}

void HtmlView::setFileName( const QString& fname )
{
	d_fname = fname;
	d_history->clear();
}

void HtmlView::slotOnURL( const QString& url )
{
	d_current_url = url;
	d_parent->setStatusBarMessage( url );
}

void HtmlView::slotPopupMenu( const QString& url, const QPoint& point )
{
	if ( !d_popup )
	{
		d_popup = new KPopupMenu( view() );
		d_copy->plug( d_popup );
		d_copy_url->plug( d_popup );
		d_select_all->plug( d_popup );
	}
	
	d_copy_url->setEnabled( url != QString::null );
	d_popup->popup( point );
}

void HtmlView::slotCopy()
{
	KApplication::clipboard()->setText( selectedText(), QClipboard::Clipboard );
}

void HtmlView::slotCopyURL()
{
	KApplication::clipboard()->setText( d_current_url, QClipboard::Clipboard );
}

void HtmlView::slotSelectAll()
{
	selectAll();
}

void HtmlView::slotSelectionChanged()
{
	d_copy->setEnabled( hasSelection() );
}

void HtmlView::updateState()
{
	slotSelectionChanged();
	if ( d_last_node )
	{
		d_topic_tree->ensureItemVisible( d_last_node );
		//d_last_node->setSelected( true );
		d_history->setEnabled( false );
		d_topic_tree->setCurrentItem( d_last_node );
		d_history->setEnabled( true );
	}
	
	d_history->emitSignal();
}

#include "HtmlView.moc"