update release notes for v1.0.2

data/com.github.ronnydo.colorpicker.appdata.xml

@@ -22,6 +22,13 @@
 	<category>Development</category>
   </categories>
   <releases>
+  	​<release version="1.0.2" date="2017-08-20" urgency="medium">
+  	​  <description>
+  	    <ul>
+  		  <li>Implement "Don't add the same color to color history twice" (issue #24)</li>
+  		</ul>
+  	  </description>
+  	​</release>
 	​<release version="1.0.1" date="2017-07-13" urgency="medium">
 	​  <description>
 	    <ul>

debian/changelog

@@ -1,3 +1,9 @@
+com.github.ronnydo.colorpicker (1.0.1) xenial; urgency=medium
+
+  * Implement "Don't add the same color to color history twice" (issue #24)
+  
+ -- Ronny Dobra <ronnydobra at arcor dot de>  Thu, 20 Aug 2017 13:30:00 +0100
+
 com.github.ronnydo.colorpicker (1.0.1) xenial; urgency=medium
 
   * Improvements to avoid issue #19

dev-build.sh

@@ -0,0 +1,7 @@
+sudo rm -r build
+meson build
+cd build
+mesonconf -Dprefix=/usr
+ninja
+./com.github.ronnydo.colorpicker
+cd ..

src/Widgets/ColorHistory.vala

@@ -87,19 +87,29 @@ namespace ColorPicker.Widgets {
         } 
         
         public void add_color (Gdk.RGBA color) {
-            if (color_list.size >= max_colors) {
-                remove_oldest_color ();
-            }
+            int c_index = get_index_of (color);
+            
+            if (c_index < 0) {
+                if (color_list.size >= max_colors) {
+                    color_list.remove_at (0);
+                }
+            } else {
+              color_list.remove_at (c_index);
+            }  
+
             color_list.add (color);
             store_colors ();
-            
             selected_color = get_color_list ().size - 1;
         }
         
-        public void remove_oldest_color () {
-            color_list.remove_at (0);
-            store_colors ();
-        }
+        public int get_index_of (Gdk.RGBA color) {
+            for (int i = 0; i < color_list.size; i++) {
+                if (color_list[i] == color) {
+                    return i;
+                }
+            }
+            return -1;
+        }              
         
         public Gee.ArrayList<Gdk.RGBA?> get_color_list () {
             return color_list;