From 4e3689370d8e81716759a5b29934c35cf848a379 Mon Sep 17 00:00:00 2001
From: Tomaz Canabrava <tomaz.canabrava@intel.com>
Date: Wed, 17 Sep 2014 16:18:37 -0300
Subject: [PATCH] Create the sorting method.

This method should remove a row on the dive list model
visualization if none of the tags that it have are marked
as 'visible'.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
---
 qt-ui/models.cpp | 25 +++++++++++++++++++++++++
 qt-ui/models.h   | 11 +++++++++--
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/qt-ui/models.cpp b/qt-ui/models.cpp
index b22702795..def258a5f 100644
--- a/qt-ui/models.cpp
+++ b/qt-ui/models.cpp
@@ -2150,3 +2150,28 @@ bool TagFilterModel::setData(const QModelIndex &index, const QVariant &value, in
 	}
 	return false;
 }
+
+TagFilterSortModel::TagFilterSortModel(QObject *parent): QSortFilterProxyModel(parent)
+{
+
+}
+
+bool TagFilterSortModel::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
+{
+	QModelIndex index0 = sourceModel()->index(source_row, 0, source_parent);
+	QVariant diveVariant = sourceModel()->data(index0, DiveTripModel::DIVE_ROLE);
+	struct dive* d = (struct dive* ) diveVariant.value<void*>();
+	if(!d)
+		return false; // it's a trip.
+
+	// Checked means 'Show', Unchecked means 'Hide'.
+	struct tag_entry *head = d->tag_list;
+
+	while(head) {
+		QString tagName(head->tag->name);
+		int index = TagFilterModel::instance()->stringList().indexOf(tagName);
+		if (TagFilterModel::instance()->checkState[index] == false )
+			return true;
+	}
+	return false;
+}
diff --git a/qt-ui/models.h b/qt-ui/models.h
index c54a765ab..446ae9047 100644
--- a/qt-ui/models.h
+++ b/qt-ui/models.h
@@ -11,6 +11,7 @@
 #include <QCoreApplication>
 #include <QStringList>
 #include <QStringListModel>
+#include <QSortFilterProxyModel>
 
 #include "../dive.h"
 #include "../divelist.h"
@@ -217,7 +218,6 @@ struct TripItem;
 
 class TreeModel : public QAbstractItemModel {
 	Q_OBJECT
-
 public:
 	TreeModel(QObject *parent = 0);
 	virtual ~TreeModel();
@@ -425,10 +425,17 @@ public:
 	virtual QVariant data(const QModelIndex &index, 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;
+	bool *checkState;
 public slots:
 	void repopulate();
 private:
 	explicit TagFilterModel(QObject *parent = 0);
-	bool *checkState;
+};
+
+class TagFilterSortModel : public QSortFilterProxyModel {
+	Q_OBJECT
+public:
+	TagFilterSortModel(QObject *parent = 0);
+	virtual bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const;
 };
 #endif // MODELS_H