Started the work of Editable Model for the Planner

This commit is the start of the Editable Model work
for the planner, it creates a new delegate and shares
the code for the model that creates the gas types, so
we only need to change in one place to add new gases.

The table is already edition-enabled, but the outcome
is still undone, next commit - put all together.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>

qt-ui/diveplanner.cpp

@@ -1,10 +1,12 @@
 #include "diveplanner.h"
 #include "graphicsview-common.h"
 #include "models.h"
+#include "modeldelegates.h"
 
 #include "../dive.h"
 #include "../divelist.h"
 
+
 #include <cmath>
 #include <QMouseEvent>
 #include <QDebug>
@@ -27,6 +29,11 @@
 #define MAX_DEEPNESS 150
 #define MIN_DEEPNESS 40
 
+QStringListModel *airTypes(){
+	static QStringListModel *self = new QStringListModel(QStringList() << QObject::tr("AIR") << QObject::tr("EAN32") << QObject::tr("EAN36"));
+	return self;
+}
+
 static DivePlannerPointsModel *plannerModel = DivePlannerPointsModel::instance();
 
 DivePlannerGraphics::DivePlannerGraphics(QWidget* parent): QGraphicsView(parent), activeDraggedHandler(0)
@@ -135,10 +142,9 @@ DivePlannerGraphics::DivePlannerGraphics(QWidget* parent): QGraphicsView(parent)
 #undef ADD_ACTION
 
 	// Prepare the stuff for the gas-choices.
-	gasChoices = new QStringListModel(QStringList() << tr("AIR") << tr("EAN32") << tr("EAN36"));
 	gasListView = new QListView();
 	gasListView->setWindowFlags(Qt::Popup);
-	gasListView->setModel(gasChoices);
+	gasListView->setModel(airTypes());
 	gasListView->hide();
 
 	connect(gasListView, SIGNAL(activated(QModelIndex)), this, SLOT(selectGas(QModelIndex)));
@@ -394,8 +400,6 @@ void DivePlannerGraphics::createDecoStops()
 {
 	qDeleteAll(lines);
 	lines.clear();
-	//TODO: fix.
-	//qSort(handles.begin(), handles.end(), handlerLessThenMinutes);
 
 	// This needs to be done in the following steps:
 	// Get the user-input and calculate the dive info
@@ -807,6 +811,7 @@ DivePlannerWidget::DivePlannerWidget(QWidget* parent, Qt::WindowFlags f): QWidge
 {
 	ui->setupUi(this);
 	ui->tablePoints->setModel(DivePlannerPointsModel::instance());
+	ui->tablePoints->setItemDelegateForColumn(DivePlannerPointsModel::GAS, new AirTypesDelegate(this));
 	connect(ui->startTime, SIGNAL(timeChanged(QTime)), this, SLOT(startTimeChanged(QTime)));
 	connect(ui->ATMPressure, SIGNAL(textChanged(QString)), this, SLOT(atmPressureChanged(QString)));
 	connect(ui->bottomSAC, SIGNAL(textChanged(QString)), this, SLOT(bottomSacChanged(QString)));
@@ -914,6 +919,11 @@ QVariant DivePlannerPointsModel::data(const QModelIndex& index, int role) const
 	return QVariant();
 }
 
+bool DivePlannerPointsModel::setData(const QModelIndex& index, const QVariant& value, int role)
+{
+    return QAbstractItemModel::setData(index, value, role);
+}
+
 QVariant DivePlannerPointsModel::headerData(int section, Qt::Orientation orientation, int role) const
 {
 	if (role == Qt::DisplayRole && orientation == Qt::Horizontal){
@@ -927,6 +937,11 @@ QVariant DivePlannerPointsModel::headerData(int section, Qt::Orientation orienta
 	return QVariant();
 }
 
+Qt::ItemFlags DivePlannerPointsModel::flags(const QModelIndex& index) const
+{
+    return QAbstractItemModel::flags(index) | Qt::ItemIsEditable;
+}
+
 int DivePlannerPointsModel::rowCount(const QModelIndex& parent) const
 {
 	return divepoints.count();

qt-ui/diveplanner.h

@@ -17,6 +17,9 @@ class QListView;
 class QStringListModel;
 class QModelIndex;
 
+// Return a Model containing the air types.
+QStringListModel *airTypes();
+
 class DivePlannerPointsModel : public QAbstractTableModel{
 	Q_OBJECT
 public:
@@ -26,6 +29,8 @@ public:
 	virtual QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const;
 	virtual int rowCount(const QModelIndex& parent = QModelIndex()) const;
 	virtual QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
+    virtual bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole);
+    virtual Qt::ItemFlags flags(const QModelIndex& index) const;
 
 	/**
 	 * @return the row number.

qt-ui/modeldelegates.cpp

@@ -3,6 +3,7 @@
 #include "../divelist.h"
 #include "starwidget.h"
 #include "models.h"
+#include "diveplanner.h"
 
 #include <QtDebug>
 #include <QPainter>
@@ -14,6 +15,7 @@
 #include <QLineEdit>
 #include <QKeyEvent>
 #include <QAbstractItemView>
+#include <QStringListModel>
 
 // Gets the index of the model in the currentRow and column.
 // currCombo is defined below.
@@ -253,3 +255,15 @@ QWidget* WSInfoDelegate::createEditor(QWidget* parent, const QStyleOptionViewIte
 	currWeigth.weigth = ws->weight.grams;
 	return editor;
 }
+
+void AirTypesDelegate::revertModelData(QWidget* widget, QAbstractItemDelegate::EndEditHint hint)
+{
+}
+
+void AirTypesDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const
+{
+}
+
+AirTypesDelegate::AirTypesDelegate(QObject* parent) : ComboBoxDelegate(airTypes(), parent)
+{
+}

qt-ui/modeldelegates.h

@@ -49,4 +49,13 @@ public slots:
 	void revertModelData(QWidget* widget, QAbstractItemDelegate::EndEditHint hint);
 };
 
+class AirTypesDelegate : public ComboBoxDelegate{
+	Q_OBJECT
+public:
+	explicit AirTypesDelegate(QObject* parent = 0);
+	virtual void setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const;
+public slots:
+	void revertModelData(QWidget* widget, QAbstractItemDelegate::EndEditHint hint);
+};
+
 #endif