MediaLibraryView: Implement filtering

src/Gui/library/ui/MediaItem.qml

@@ -6,11 +6,18 @@ Rectangle {
     color: GridView.isCurrentItem ? "black" : "#333333"
     border.color: "#222222"
     border.width: 1
+    visible: searchText.length > 0 ? containsString( searchText ) : true
+    enabled: visible
     property string thumbnailPath
     property string title
     property int duration
     property int mediaId
 
+    function containsString( str )
+    {
+        return title.toLowerCase().indexOf( str.toLowerCase() ) !== -1;
+    }
+
     Image {
         id: thumbnail
         anchors.left: mediaItem.left

src/Gui/library/ui/MediaLibraryView.qml

@@ -5,6 +5,8 @@ Rectangle {
     anchors.fill: parent
     color: "#999999"
 
+    property alias searchText: searchTextInput.text
+
     ScrollView {
         id: sView
         height: parent.height
@@ -41,6 +43,7 @@ Rectangle {
                         }
 
                         TextInput {
+                            id: searchTextInput
                             color: "#DDDDDD"
                             width: parent.width
                             anchors.centerIn: parent