1 files changed, 105 insertions, 0 deletions
diff --git a/src/valuemanager.cpp b/src/valuemanager.cpp
new file mode 100644
index 0000000..db8ef99
--- /dev/null
+++ b/src/valuemanager.cpp
@@ -0,0 +1,105 @@
+/*
+ * valuemanager.cpp - part of abakus
+ * Copyright (C) 2004, 2005 Michael Pyne <michael.pyne@kdemail.net>
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA
+ */
+#include <kdebug.h>
+#include <klocale.h>
+
+#include <qregexp.h>
+
+#include "numerictypes.h"
+#include "valuemanager.h"
+
+ValueManager *ValueManager::m_manager = 0;
+
+ValueManager *ValueManager::instance()
+{
+    if(!m_manager)
+        m_manager = new ValueManager;
+
+    return m_manager;
+}
+
+ValueManager::ValueManager(QObject *parent, const char *name) :
+    QObject(parent, name)
+{
+    m_values.insert("pi", Abakus::number_t::PI);
+    m_values.insert("e", Abakus::number_t::E);
+}
+
+Abakus::number_t ValueManager::value(const QString &name) const
+{
+    return m_values[name];
+}
+
+bool ValueManager::isValueSet(const QString &name) const
+{
+    return m_values.contains(name);
+}
+
+bool ValueManager::isValueReadOnly(const QString &name) const
+{
+    QRegExp readOnlyValues("^(ans|pi|e|stackCount)$");
+
+    return name.find(readOnlyValues) != -1;
+}
+
+void ValueManager::setValue(const QString &name, const Abakus::number_t value)
+{
+    if(m_values.contains(name) && this->value(name) != value)
+        emit signalValueChanged(name, value);
+    else if(!m_values.contains(name))
+        emit signalValueAdded(name, value);
+
+    m_values.replace(name, value);
+}
+
+void ValueManager::removeValue(const QString &name)
+{
+    if(m_values.contains(name))
+        emit signalValueRemoved(name);
+
+    m_values.remove(name);
+}
+
+void ValueManager::slotRemoveUserVariables()
+{
+    QStringList vars = valueNames();
+
+    for(QStringList::ConstIterator var = vars.constBegin(); var != vars.constEnd(); ++var)
+        if(!isValueReadOnly(*var))
+            removeValue(*var);
+}
+
+QStringList ValueManager::valueNames() const
+{
+    return m_values.keys();
+}
+
+QString ValueManager::description(const QString &valueName)
+{
+    if(valueName == "e")
+        return i18n("Natural exponential base - 2.7182818");
+    if(valueName == "pi")
+        return i18n("pi (π) - 3.1415926");
+
+    return QString();
+}
+
+#include "valuemanager.moc"
+
+// vim: set et ts=8 sw=4 encoding=utf-8: