/*  This file is part of the Kate project.
 *
 *  Copyright (C) 2012 Christoph Cullmann <cullmann@kde.org>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 */

#include "kateprojectinfoviewindex.h"
#include "kateprojectpluginview.h"

#include <QVBoxLayout>
#include <klocale.h>
#include <kmessagewidget.h>

KateProjectInfoViewIndex::KateProjectInfoViewIndex (KateProjectPluginView *pluginView, KateProject *project)
  : QWidget ()
  , m_pluginView (pluginView)
  , m_project (project)
  , m_messageWidget (0)
  , m_lineEdit (new QLineEdit())
  , m_treeView (new QTreeView())
  , m_model (new QStandardItemModel (m_treeView))
{
  /**
   * default style
   */
  m_treeView->setEditTriggers (QAbstractItemView::NoEditTriggers);
  m_model->setHorizontalHeaderLabels (QStringList () << "Name" << "Kind" << "File" << "Line");
  
  /**
   * attach model
   * kill selection model
   */
  QItemSelectionModel *m = m_treeView->selectionModel();
  m_treeView->setModel (m_model);
  delete m;
  
  /**
   * layout widget
   */
  QVBoxLayout *layout = new QVBoxLayout;
  layout->setSpacing (0);
  layout->addWidget (m_lineEdit);
  layout->addWidget (m_treeView);
  setLayout (layout);
  
  /**
   * connect needed signals
   */
  connect (m_lineEdit, SIGNAL(textChanged (const QString &)), this, SLOT(slotTextChanged (const QString &)));
  connect (m_treeView, SIGNAL(clicked (const QModelIndex &)), this, SLOT(slotClicked (const QModelIndex &)));
  connect (m_project, SIGNAL(indexChanged ()), this, SLOT(indexAvailable ()));

  /**
   * trigger once search with nothing
   */
  slotTextChanged (QString());
}

KateProjectInfoViewIndex::~KateProjectInfoViewIndex ()
{
}

void KateProjectInfoViewIndex::slotTextChanged (const QString &text)
{
  /**
   * init
   */
  m_treeView->setSortingEnabled (false);
  m_model->setRowCount(0);
  
  /**
   * get results
   */
  if (m_project->projectIndex() && !text.isEmpty())
    m_project->projectIndex()->findMatches (*m_model, text, KateProjectIndex::FindMatches);
  
  /**
   * tree view polish ;)
   */
  m_treeView->setSortingEnabled (true);
  m_treeView->resizeColumnToContents (2);
  m_treeView->resizeColumnToContents (1);
  m_treeView->resizeColumnToContents (0);
}

void KateProjectInfoViewIndex::slotClicked (const QModelIndex &index)
{
  /**
   * get path
   */
  QString filePath = m_model->item (index.row(), 2)->text();
  if (filePath.isEmpty())
    return;
  
  /**
   * create view
   */
  KTextEditor::View *view = m_pluginView->mainWindow()->openUrl (KUrl::fromPath (filePath));
  if (!view)
    return;
  
  /**
   * set cursor, if possible
   */
  int line = m_model->item (index.row(), 3)->text().toInt();
  if (line >= 1)
    view->setCursorPosition (KTextEditor::Cursor (line - 1, 0));
}

void KateProjectInfoViewIndex::indexAvailable ()
{
  /**
   * update enabled state of widgets
   */
  const bool valid = m_project->projectIndex ()->isValid ();
  m_lineEdit->setEnabled(valid);
  m_treeView->setEnabled(valid);

  /**
   * if index exists, hide possible message widget, else create it
   */
  if (valid) {
    if (m_messageWidget && m_messageWidget->isVisible ()) {
      m_messageWidget->animatedHide ();
    }
  } else if (!m_messageWidget) {
    m_messageWidget = new KMessageWidget();
    m_messageWidget->setCloseButtonVisible(true);
    m_messageWidget->setMessageType(KMessageWidget::Warning);
    m_messageWidget->setWordWrap(false);
    m_messageWidget->setText(i18n("The index could not be created. Please install 'ctags'."));
    static_cast<QVBoxLayout*>(layout ())->insertWidget(0, m_messageWidget);
  } else {
    m_messageWidget->animatedShow ();
  }
}

// kate: space-indent on; indent-width 2; replace-tabs on;
