File indexing completed on 2024-04-14 04:00:24

 //
 // C++ Implementation: dlgvarviewer
 //
 // Description: 
 //
 /*
 Copyright 2008-2011 Tomas Mecir <kmuddy@kmuddy.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, see <http://www.gnu.org/licenses/>.
 */
 
 #include "dlgvarviewer.h"
 
 #include "cactionmanager.h"
 #include "cvariablelist.h"
 
 #include <KLocalizedString>
 
 #include <QAbstractTableModel>
 #include <QTreeView>
 
 #include <map>
 
 // this model holds and presents the variables and their values
 class VariableModel : public QAbstractTableModel {
  public:
   VariableModel () {
     list = nullptr;
     count = 0;
   }
 
   int columnCount (const QModelIndex &parent = QModelIndex()) const override {
     if (parent.isValid()) return 0;
     return 2;
   }
 
   int rowCount (const QModelIndex &parent = QModelIndex()) const override {
     if (parent.isValid()) return 0;
     return count;
   }
 
   QVariant data (const QModelIndex &index, int role = Qt::DisplayRole) const override
   {
     if (role != Qt::DisplayRole) return QVariant();
     if (index.parent().isValid()) return QVariant();
     int row = index.row();
     int col = index.column();
     if ((row < 0) || (row >= count)) return QVariant();
     if ((col < 0) || (col >= 2)) return QVariant();
     QString name = vars[row];
     if (col == 0) return name;
     return list->getValue (name);
   }
 
   QVariant headerData (int section, Qt::Orientation, int role = Qt::DisplayRole) const override
   {
     if (role != Qt::DisplayRole) return QVariant();
     switch (section) {
       case 0: return i18n ("Variable");
       case 1: return i18n ("Value");
       default: return QVariant();
     }
   }
 
   void listChanged (cVariableList *newList) {
     beginResetModel();
     pos.clear ();
     count = 0;
     list = newList;
     if (list) {
       // load variable data
       vars = list->getList ();
       for (QStringList::iterator it = vars.begin(); it != vars.end(); ++it)
         pos[*it] = count++;
     }
     endResetModel();
   }
 
   void variableChanged (const QString &name) {
     if (!list) return;
     // check possible situations
     if (!list->exists (name)) {
       // variable just got deleted
       // TODO: only remove the correct row instead of resetting everything
       listChanged (list);
     } else if (!pos.count (name)) {
       // variable just got created
       // TODO: only add the correct row instead of resetting everything
       listChanged (list);
     } else {
       // an existing variable was changed
       int row = pos[name];
       emit dataChanged (index (row, 0, QModelIndex()), index (row, 1, QModelIndex()));
     }
 
   }
 
  private:
   cVariableList *list;
   std::map<QString, int> pos;  // positions of variables
   QStringList vars;
   int count;
 };
 
 
 dlgVarViewer::dlgVarViewer (QWidget *parent) : QDockWidget (parent), cActionBase ("variable-viewer", 0)
 {
   model = new VariableModel;
   createDialog ();
 
   addEventHandler ("connected", 200, PT_NOTHING);
   addEventHandler ("disconnected", 200, PT_NOTHING);
   addEventHandler ("session-activated", 200, PT_INT);
   addEventHandler ("var-changed", 200, PT_STRING);
 }
 
 dlgVarViewer::~dlgVarViewer ()
 {
   removeEventHandler ("connected");
   removeEventHandler ("disconnected");
   removeEventHandler ("session-activated");
   removeEventHandler ("var-changed");
 
   delete model;
 }
 
 void dlgVarViewer::createDialog ()
 {
   // setInitialSize (QSize (300, 200));
   setWindowTitle (i18n ("Variables"));
 
   viewer = new QTreeView (this);
   viewer->setAllColumnsShowFocus (true);
   viewer->setRootIsDecorated (false);
   viewer->setUniformRowHeights (true);
   viewer->setModel (model);
 
   setWidget (viewer);
   
   //no focus - we don't want this dialog to get focus
   setFocusPolicy (Qt::NoFocus);
   viewer->setFocusPolicy (Qt::NoFocus);
 }
 
 void dlgVarViewer::eventNothingHandler (QString event, int sess)
 {
   if (!isVisible()) return;  // nothing if we aren't shown
   cActionManager *am = cActionManager::self();
   if (am->activeSession() != sess) return;  // nothing if it's not the active session
 
   if (event == "connected") {
     cActionManager *am = cActionManager::self();
     cVariableList *vars = dynamic_cast<cVariableList *>(am->object ("variables", sess));
     model->listChanged (vars);
   }
   if (event == "disconnected") {
     model->listChanged (nullptr);
   }
 }
 
 void dlgVarViewer::eventIntHandler (QString event, int, int val, int)
 {
   if (!isVisible()) return;  // nothing if we aren't shown
 
   if (event == "session-activated") {
     cActionManager *am = cActionManager::self();
     cVariableList *vars = dynamic_cast<cVariableList *>(am->object ("variables", val));
     model->listChanged (vars);
   }
 }
 
 void dlgVarViewer::eventStringHandler (QString event, int sess, QString &par1, const QString &)
 {
   if (!isVisible()) return;  // nothing if we aren't shown
   cActionManager *am = cActionManager::self();
   if (am->activeSession() != sess) return;  // nothing if it's not the active session
 
   if (event == "var-changed") {
     model->variableChanged (par1);
   }
 }
 
 void dlgVarViewer::showEvent (QShowEvent *)
 {
   // when the dialog is shown, we need to reset the data
   cActionManager *am = cActionManager::self();
   int sess = am->activeSession ();
   cVariableList *vars = dynamic_cast<cVariableList *>(am->object ("variables", sess));
   model->listChanged (vars);
 }
 
 #include "moc_dlgvarviewer.cpp"