fgdata/gui/dialogs/tutorial.xml

<?xml version="1.0"?>

<PropertyList>
	<name>tutorial</name>
	<layout>vbox</layout>
	<default-padding>4</default-padding>

	<text>
		<label>Select Tutorial</label>
	</text>

	<hrule><empty/></hrule>

	<nasal>
		<open>
			tutorial.stopTutorial();
			var list = cmdarg().getNode("group/group[1]/list");
			var node = props.globals.getNode("/sim/tutorials", 1);
			var tut = node.getChildren("tutorial");
			var current = node.getNode("current-tutorial", 1);

			# fill listbox
			list.removeChildren("value");
			forindex (var i; tut) {
				var name = tut[i].getNode("name");
				if (name == nil) {
					die("tutorial #" ~ i ~ " has no &lt;name>");
				}
				name = name.getValue();
				list.getChild("value", i, 1).setValue(name);
			}

			select = func {
				var name = current.getValue();
				foreach (var t; tut) {
					if (t.getNode("name").getValue() == name) {
						setprop("/sim/tutorials/current-description",
							screen.trim(t.getNode("description").getValue()));
						break;
					}
				}
				fgcommand("dialog-update", props.Node.new({"object-name": "textbox",
						"dialog-name": "tutorial"}));
			}


			if (current.getType() == "NONE" or current.getValue() == "") {
				current.setValue(tut[0].getNode("name").getValue());
				select();
			}
		</open>
	</nasal>

	<group>
		<layout>hbox</layout>

		<group>
			<layout>vbox</layout>

			<group>
				<layout>vbox</layout>
				<text>
					<halign>left</halign>
					<label></label>
					<property>/sim/tutorials/current-tutorial</property>
					<live>1</live>
				</text>
			</group>

			<textbox>
				<name>textbox</name>
				<halign>fill</halign>
				<pref-width>600</pref-width>
				<pref-height>480</pref-height>
				<slider>20</slider>
				<wrap>true</wrap>
				<editable>false</editable>
				<live>1</live>
				<property>/sim/tutorials/current-description</property>
			</textbox>
		</group>

		<group>
			<layout>vbox</layout>

			<list>
				<name>list</name>
				<halign>fill</halign>
				<pref-width>170</pref-width>
				<pref-height>420</pref-height>
				<property>/sim/tutorials/current-tutorial</property>
				<binding>
					<command>dialog-apply</command>
					<object-name>list</object-name>
				</binding>
				<binding>
					<command>nasal</command>
					<script>select()</script>
				</binding>
			</list>

			<empty><stretch>true</stretch></empty>

			<button>
				<legend>Cancel</legend>
				<equal>true</equal>
				<key>Esc</key>
				<binding>
					<command>dialog-close</command>
				</binding>
			</button>

			<button>
				<legend>Start Tutorial</legend>
				<equal>true</equal>
				<default>true</default>
				<binding>
					<command>nasal</command>
					<script>tutorial.startTutorial()</script>
				</binding>
				<binding>
					<command>dialog-close</command>
				</binding>
			</button>
		</group>
	</group>
</PropertyList>