WoWInterface/Interface/AddOns/DBM-GUI/DBM-GUI_DropDown.xml

<Ui xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/
..\FrameXML\UI.xsd">
	<Frame name="DBM_GUI_DropDownTemplate" inherits="BackdropTemplate" virtual="true">
		<KeyValues>
			<KeyValue key="backdropInfo" value="BACKDROP_TOOLTIP_0_16" type="global"/>
			<KeyValue key="backdropBorderColor" value="LIGHTGRAY_FONT_COLOR" type="global"/>
			<KeyValue key="backdropBorderColorAlpha" value="0.6" type="number"/>
		</KeyValues>
		<Frames>
			<ScrollFrame name="$parentList" hidden="true">
				<KeyValues>
					<KeyValue key="noScrollBar" value="true" type="boolean"/>
				</KeyValues>
				<Size>
					<AbsDimension x="24" y="0"/>
				</Size>
				<Anchors>
					<Anchor point="TOPRIGHT">
						<Offset>
							<AbsDimension x="-3" y="-3"/>
						</Offset>
					</Anchor>
					<Anchor point="BOTTOMRIGHT">
						<Offset>
							<AbsDimension x="-3" y="3"/>
						</Offset>
					</Anchor>
				</Anchors>
				<Scripts>
					<OnLoad function="ScrollFrame_OnLoad"/>
					<OnMouseWheel function="ScrollFrameTemplate_OnMouseWheel"/>
					<OnVerticalScroll>
						FauxScrollFrame_OnVerticalScroll(self, offset, self:GetParent().buttonHeight, function(frame)
							frame:GetParent():update()
						end);
					</OnVerticalScroll>
				</Scripts>
				<Frames>
					<Slider name="$parentScrollBar">
						<Size x="16" y="0"/>
						<Frames>
							<Button name="$parentScrollUpButton" parentKey="ScrollUpButton" inherits="UIPanelScrollUpButtonTemplate">
								<Anchors>
									<Anchor point="BOTTOM" relativePoint="TOP"/>
								</Anchors>
								<Scripts>
									<OnClick function="UIPanelScrollBarScrollUpButton_OnClick"/>
								</Scripts>
							</Button>
							<Button name="$parentScrollDownButton" parentKey="ScrollDownButton" inherits="UIPanelScrollDownButtonTemplate">
								<Anchors>
									<Anchor point="TOP" relativePoint="BOTTOM"/>
								</Anchors>
								<Scripts>
									<OnClick function="UIPanelScrollBarScrollDownButton_OnClick"/>
								</Scripts>
							</Button>
						</Frames>
						<ThumbTexture name="$parentThumbTexture" parentKey="ThumbTexture" inherits="UIPanelScrollBarButton" file="Interface\Buttons\UI-ScrollBar-Knob">
							<Size x="18" y="24"/>
							<TexCoords left="0.20" right="0.80" top="0.125" bottom="0.875"/>
						</ThumbTexture>
						<Anchors>
							<Anchor point="TOPRIGHT">
								<Offset>
									<AbsDimension x="0" y="-20"/>
								</Offset>
							</Anchor>
							<Anchor point="BOTTOMLEFT">
								<Offset>
									<AbsDimension x="0" y="19"/>
								</Offset>
							</Anchor>
						</Anchors>
						<Scripts>
							<OnValueChanged>
								self:GetParent():SetVerticalScroll(value);
							</OnValueChanged>
						</Scripts>
					</Slider>
					<Frame name="$parentScrollChildFrame" hidden="true"/>
				</Frames>
			</ScrollFrame>
		</Frames>
	</Frame>
</Ui>