
/*
 *  sidepanel.cpp
 *
 *  Copyright (C) 2010 David Hubner <hubnerd@ntlworld.com>
 *
 *  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.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */

//Local
#include "sidepanel.h"

//KDE
#include <KLocale>
#include <KDebug>

//QT
#include <QWidget>
#include <QRegExp>
#include <QMenu>

SidePanel::SidePanel(QWidget *parent) : QTreeView(parent)
{ 
  setSortingEnabled(true);
  setAnimated(true);
  sortByColumn(0, Qt::AscendingOrder);
  m_model = new InfoKcmModel(this);  
  
  m_proxyModel = new InfoKcmProxyModel(this);
  m_proxyModel->setSourceModel(m_model);
  
  createMenuActions();
  
  setMouseTracking(true);
  setModel(m_proxyModel);
  connect(this,SIGNAL(activated(const QModelIndex &)),this,SLOT(activatedSlot(const QModelIndex &)));
}

SidePanel::~SidePanel()
{
  disconnect(this,SIGNAL(activated(const QModelIndex &)),this,SLOT(activatedSlot(const QModelIndex &)));
  
  delete m_proxyModel;
  delete m_model;
}

void SidePanel::activatedSlot(const QModelIndex &index)
{
  if(index.isValid() == false) return;
  
  const KcmTreeItem *item = static_cast<KcmTreeItem*>(m_proxyModel->mapToSource(index).internalPointer());
  emit activated(item);
}

void SidePanel::changeToFirstValidItem()
{
  QModelIndex rootIndex = m_proxyModel->mapFromSource(m_model->firstValid());
  if(rootIndex.isValid() == false) return;
  
  setCurrentIndex(rootIndex);
  emit activatedSlot(rootIndex);
}

QModelIndex SidePanel::mapToProxySource(const QModelIndex& index)
{
  QModelIndex tmp = m_proxyModel->mapToSource(index);
  if(tmp.isValid() == true) return tmp;
  return QModelIndex();
}

void SidePanel::filterSideMenuSlot(const QString &pattern)
{
  if(pattern.isEmpty())
  {
    collapseAll();
  }
  else 
  {
    expandAll();
  }
  m_proxyModel->setFilterRegExp(QRegExp(pattern,Qt::CaseInsensitive));
}

void SidePanel::createMenuActions() 
{ 
  resetAct = new QAction(i18n("Clear Search"), this);
  connect(resetAct, SIGNAL(triggered()), this, SLOT(resetSearchSlot()));
  
  expAct = new QAction(i18n("Expand All Categories"), this);
  connect(expAct, SIGNAL(triggered()), this, SLOT(expandAllSlot()));
  
  colAct = new QAction(i18n("Collapse All Categories"), this);
  connect(colAct, SIGNAL(triggered()), this, SLOT(collapseAllSlot()));
}

void SidePanel::contextMenuEvent(QContextMenuEvent *event) 
{  
  QMenu menu(this);
  
  menu.addAction(colAct);
  menu.addAction(expAct);
  menu.addAction(resetAct);
  menu.exec(event->globalPos());
}

void SidePanel::collapseAllSlot()
{
  collapseAll();
}

void SidePanel::expandAllSlot()
{
  expandAll();
}

QStringList SidePanel::allChildKeywords()
{
  return m_model->allChildrenKeywords();
}

void SidePanel::resetSearchSlot()
{
  filterSideMenuSlot("");
}

void SidePanel::toggleExpand(const KcmTreeItem *item)
{
  int expand=0;
  if(item->type() == KcmTreeItem::KCM) return;
  
  QModelIndex expandIndex = m_proxyModel->mapFromSource(m_model->indexOf((KcmTreeItem *)item));
  
  if(!expandIndex.isValid()) return;
  if(!isExpanded(expandIndex)) 
  {
    expand = true;
  } 
  else
  {
    expand = false;
  }
  this->setExpanded(expandIndex,expand);
}

