dialogoperation.h

   1 //
   2 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   3 // +                                                                      +
   4 // + This file is part of enGrid.                                         +
   5 // +                                                                      +
   6 // + Copyright 2008,2009 Oliver Gloth                                     +
   7 // +                                                                      +
   8 // + enGrid is free software: you can redistribute it and/or modify       +
   9 // + it under the terms of the GNU General Public License as published by +
  10 // + the Free Software Foundation, either version 3 of the License, or    +
  11 // + (at your option) any later version.                                  +
  12 // +                                                                      +
  13 // + enGrid is distributed in the hope that it will be useful,            +
  14 // + but WITHOUT ANY WARRANTY; without even the implied warranty of       +
  15 // + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        +
  16 // + GNU General Public License for more details.                         +
  17 // +                                                                      +
  18 // + You should have received a copy of the GNU General Public License    +
  19 // + along with enGrid. If not, see <http://www.gnu.org/licenses/>.       +
  20 // +                                                                      +
  21 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  22 //
  23 #ifndef dialogoperation_H
  24 #define dialogoperation_H
  25
  26 template <class UI>
  27 class DialogOperation;
  28
  29 #include "operation.h"
  30
  31 #include <QDialog>
  32 #include <QListWidget>
  33 #include <QTextStream>
  34
  35 #include <vtkUnstructuredGrid.h>
  36 #include <vtkIntArray.h>
  37 #include <vtkCellData.h>
  38
  39 template <class UI>
  40 class DialogOperation : public QDialog,
  41                         public Operation
  42 {
  43
  44 protected: // attributes
  45
  46   /** The user interface definition from QtDesigner */
  47   UI ui;
  48
  49 public: // methods
  50
  51   /** Generic constructor to set up the user interface */
  52   DialogOperation();
  53
  54   /**
  55    * Create a checkable QListWidgetItem and add it to a QListWidget.
  56    * @param lw the QListWidget to add the item to
  57    * @param item the text of the item
  58    * @param checked the status of the item checked/unchecked
  59    */
  60   template <class T>
  61   void addListItem(QListWidget *lw, T item, bool checked = false);
  62
  63   /**
  64    * Check if a certain text item is checked within a QListWidget.
  65    * @param lw the QListWidget to check
  66    * @param item the item to check
  67    * @return true if the item is checked and false if not
  68    */
  69   template <class T>
  70   bool checkListItem(QListWidget *lw, T item);
  71
  72   /**
  73    * Get a set with all seleceted items from a QListWidget.
  74    * @param lw  The QListWidget.
  75    * @param sel On return, this will hold all items.
  76    */
  77   void getSelectedItems(QListWidget *lw, QSet<int> &sel);
  78
  79   /**
  80    * Get a set with all seleceted items from a QListWidget.
  81    * @param lw  The QListWidget.
  82    * @param sel On return, this will hold all items.
  83    */
  84   void getSelectedItems(QListWidget *lw, QSet<QString> &sel);
  85
  86   virtual void before() {};
  87   virtual void operator()();
  88
  89   //connect(const QObject* a, const char* b, const QObject* c, const char* d) { QObject::connect(a,b,c,d); };
  90 };
  91
  92
  93 template <class UI>
  94 DialogOperation<UI>::DialogOperation()
  95 {
  96   ui.setupUi(this);
  97 };
  98
  99 template <class UI>
 100 template <class T>
 101 void DialogOperation<UI>::addListItem(QListWidget *lw, T item, bool checked)
 102 {
 103   QListWidgetItem *lwi = new QListWidgetItem(lw);
 104   if (checked) lwi->setCheckState(Qt::Checked);
 105   else         lwi->setCheckState(Qt::Unchecked);
 106   QString text = "";
 107   QTextStream ts(&text);
 108   ts << item;
 109   lwi->setText(text);
 110   lwi->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
 111 };
 112
 113 template <class UI>
 114 template <class T>
 115 bool DialogOperation<UI>::checkListItem(QListWidget *lw, T item)
 116 {
 117   QString text = "";
 118   QTextStream ts(&text);
 119   ts << item;
 120   for (int i = 0; i < lw->count(); ++i) {
 121     if (lw->item(i)->text() == text) {
 122       if (lw->item(i)->checkState() == Qt::Checked) return true;
 123     };
 124   };
 125   return false;
 126 };
 127
 128 template <class UI>
 129 void DialogOperation<UI>::getSelectedItems(QListWidget *lw, QSet<QString> &sel)
 130 {
 131   sel.clear();
 132   for (int i = 0; i < lw->count(); ++i) {
 133     if (lw->item(i)->checkState() == Qt::Checked) {
 134       QString item = lw->item(i)->text();
 135       sel.insert(item);
 136     };
 137   };
 138 };
 139
 140 template <class UI>
 141 void DialogOperation<UI>::getSelectedItems(QListWidget *lw, QSet<int> &sel)
 142 {
 143   sel.clear();
 144   for (int i = 0; i < lw->count(); ++i) {
 145     if (lw->item(i)->checkState() == Qt::Checked) {
 146       int item = lw->item(i)->text().toInt();
 147       sel.insert(item);
 148     };
 149   };
 150 };
 151
 152 template <class UI>
 153 void DialogOperation<UI>::operator()()
 154 {
 155   bool ok = true;
 156   try {
 157     checkGrid();
 158     before();
 159   } catch (Error err) {
 160     err.display();
 161     ok = false;
 162   };
 163   if (ok) {
 164     if (QDialog::exec()) {
 165       try {
 166         Operation::operator()();
 167       } catch (Error err) {
 168         err.display();
 169       };
 170     };
 171   };
 172 };
 173
 174 #endif