From 76edc3ce44583ee8160ea207dfeb17c4d6508e59 Mon Sep 17 00:00:00 2001
From: jpbruyere <jp.bruyere@hotmail.com>
Date: Thu, 25 Feb 2016 16:56:39 +0100
Subject: [PATCH] expandable image visibility <= Expandable.HasContent property

---
 Templates/Expandable.goml            |  5 ++++-
 Tests/Interfaces/testExpandable.goml |  8 ++++----
 src/GraphicObjects/Expandable.cs     | 11 ++++++++++-
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/Templates/Expandable.goml b/Templates/Expandable.goml
index 2364eeb5..0174aa6d 100755
--- a/Templates/Expandable.goml
+++ b/Templates/Expandable.goml
@@ -3,7 +3,10 @@
 		MouseClick="../onMouseClick">
 	<VerticalStack Height="{../../HeightPolicy}" Width="{../../WidthPolicy}">
 		<HorizontalStack Spacing="1" Height="-1" Width="{../../../WidthPolicy}">
-			<Image Margin="2" Width="12" Height="12" Path="{../../../../Image}" SvgSub="{../../../../IsExpanded}"/>
+			<Image Margin="2" Width="12" Height="12"
+				Visible="{../../../../HasContent}"
+				Path="{../../../../Image}" 
+				SvgSub="{../../../../IsExpanded}"/>
 			<Label Text="{../../../../Caption}" Width="{../../../../WidthPolicy}"/>
 		</HorizontalStack>
 		<Container Name="Content" Visible="false"
diff --git a/Tests/Interfaces/testExpandable.goml b/Tests/Interfaces/testExpandable.goml
index 1a61085b..60433b25 100755
--- a/Tests/Interfaces/testExpandable.goml
+++ b/Tests/Interfaces/testExpandable.goml
@@ -1,13 +1,13 @@
 <?xml version="1.0"?>
 <Expandable Fit="true" Caption="Test expandable" Background="DimGray">
-		<VerticalStack Margin="5" Background="Green" Fit="true">
+<!--		<VerticalStack Margin="5" Background="Green" Fit="true">
 			<CheckBox Name="chk1" Background="Red" Fit="true"/>
 			<CheckBox Name="chk2" IsChecked="true" Fit="true"/>
 			<CheckBox Name="chk3" Fit="true"/>
 			<CheckBox Name="chk4" Fit="true"/>
-<!--			<HorizontalStack Fit="true" Margin="2" Background="Blue">
+			<HorizontalStack Fit="true" Margin="2" Background="Blue">
 				<Label Name="captionFps" Text="Fps:" Width="30" TextAlignment="Right"/>
 				<Label Name="valueFps" Text="{fps}" Font="droid , 12" Width="-1" TextAlignment="Center" Background="AoEnglish"/>
-			</HorizontalStack>-->
-		</VerticalStack>
+			</HorizontalStack>
+		</VerticalStack>-->
 </Expandable>
diff --git a/src/GraphicObjects/Expandable.cs b/src/GraphicObjects/Expandable.cs
index 3593bf90..16b3e974 100644
--- a/src/GraphicObjects/Expandable.cs
+++ b/src/GraphicObjects/Expandable.cs
@@ -41,6 +41,7 @@ namespace Crow
 			}
 			set {
 				_contentContainer.SetChild(value);
+				NotifyValueChanged ("HasContent", HasContent);
 			}
 		}
 		protected override void loadTemplate(GraphicObject template = null)
@@ -85,8 +86,12 @@ namespace Crow
             {
 				if (value == _isExpanded)
 					return;
-				
+
 				_isExpanded = value;
+
+				if (!HasContent)
+					_isExpanded = false;
+
 				NotifyValueChanged ("IsExpanded", _isExpanded);
 
 				if (_isExpanded)
@@ -95,6 +100,10 @@ namespace Crow
 					onCollapse (this, null);
             }
         }
+		[XmlIgnore]public bool HasContent {
+			get { return _contentContainer == null ? false : _contentContainer.Child != null; }
+		}
+
 		#endregion
 
 		public virtual void onExpand(object sender, EventArgs e)
-- 
2.47.3