Allowed sharing of common C++ code between RoboRIO and Simulation.

Change-Id: I8bf2bda9df389c13ae0567a62dbf0ca931ceb6f8

wpilibc/wpilibC++/src/SmartDashboard/SendableChooser.cpp

@@ -0,0 +1,78 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011. All Rights Reserved.							  */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib.  */
+/*----------------------------------------------------------------------------*/
+
+#include "SmartDashboard/SendableChooser.h"
+#include "networktables2/type/StringArray.h"
+
+#include <stdio.h>
+
+static const char *kDefault = "default";
+static const char *kOptions = "options";
+static const char *kSelected = "selected";
+
+SendableChooser::SendableChooser()
+{
+	m_defaultChoice = "";
+}
+
+/**
+ * Adds the given object to the list of options.  On the {@link SmartDashboard} on the desktop,
+ * the object will appear as the given name.
+ * @param name the name of the option
+ * @param object the option
+ */
+void SendableChooser::AddObject(const char *name, void *object)
+{
+	m_choices[name] = object;
+}
+
+/**
+ * Add the given object to the list of options and marks it as the default.
+ * Functionally, this is very close to {@link SendableChooser#AddObject(const char *name, void *object) AddObject(...)}
+ * except that it will use this as the default option if none other is explicitly selected.
+ * @param name the name of the option
+ * @param object the option
+ */
+void SendableChooser::AddDefault(const char *name, void *object)
+{
+	m_defaultChoice = name;
+	AddObject(name, object);
+}
+
+/**
+ * Returns the selected option.  If there is none selected, it will return the default.  If there is none selected
+ * and no default, then it will return {@code NULL}.
+ * @return the option selected
+ */
+void *SendableChooser::GetSelected()
+{
+	std::string selected = m_table->GetString(kSelected, m_defaultChoice);
+	if (selected == "")
+		return NULL;
+	else
+		return m_choices[selected];
+}
+
+void SendableChooser::InitTable(ITable* subtable) {
+	StringArray keys;
+	m_table = subtable;
+	if (m_table != NULL) {
+		std::map<std::string, void *>::iterator iter;
+		for (iter = m_choices.begin(); iter != m_choices.end(); iter++) {
+			keys.add(iter->first);
+		}
+		m_table->PutValue(kOptions, keys);
+		m_table->PutString(kDefault, m_defaultChoice);
+	}
+}
+
+ITable* SendableChooser::GetTable() {
+	return m_table;
+}
+
+std::string SendableChooser::GetSmartDashboardType() {
+	return "String Chooser";
+}