Added method to show a specific image in the carousel

git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/portlets/widgets/image-previewer-widget@122482 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/EnhancedImage.java

@@ -83,6 +83,7 @@ public class EnhancedImage {
 	 * @param image
 	 * @param titleToShow
 	 * @param toolTipToShow
+	 * @param download url
 	 */
 	public EnhancedImage(Image image, String titleToShow, String toolTipToShow, String downloadUrl) {
 

src/main/java/org/gcube/portlets/widgets/imagepreviewerwidget/client/ui/Carousel.java

@@ -65,8 +65,8 @@ public class Carousel extends Composite{
 	public Carousel() {
 
 		initWidget(uiBinder.createAndBindUi(this));
-		
-		// hide show button (not needed when the widget is used)
+
+		// hide show button (not needed when the widget is used...it was used while creating the widget)
 		showButton.setVisible(false);
 
 		// set alignment of the horizontal panel's children
@@ -108,6 +108,7 @@ public class Carousel extends Composite{
 	@UiHandler("downloadButton")
 	public void downloadOnClick(ClickEvent e){
 
+		mainModalPanel.hide();
 		Window.open(listOfAttachmentsToShow.get(currentPreviewPosition).getDownloadUrl(), "_blank", "");
 
 	}
@@ -146,12 +147,12 @@ public class Carousel extends Composite{
 		mainModalPanel.setTitle(listOfAttachmentsToShow.get(currentPreviewPosition).getTitleToShow());
 
 	}
-	
+
 	/**
 	 * Used to show this carousel.
 	 */
 	public void show(){
-		
+
 		// take the first object
 		currentPreviewPosition = 0;
 
@@ -163,20 +164,23 @@ public class Carousel extends Composite{
 
 		// change the title to the modal
 		mainModalPanel.setTitle(listOfAttachmentsToShow.get(currentPreviewPosition).getTitleToShow());
-		
+
 		mainModalPanel.show();
 	}
 
 	/**
-	 * Change the current image.
-	 * @param newPosition index of the new image to show
+	 * Used to show a specific image of this carousel.
 	 */
-	public void changeIndexImageShown(int newPosition){
+	public void show(EnhancedImage image){
 
-		if(newPosition < 0 || newPosition >= listOfAttachmentsToShow.size())
+		// evaluate where this image is
+		int index = evaluateImagePosition(image);
+		
+		if(index == -1)
 			return;
 
-		currentPreviewPosition = newPosition;
+		// take the first object
+		currentPreviewPosition = index;
 
 		// show it
 		shownImage.setUrl(listOfAttachmentsToShow.get(currentPreviewPosition).getImageUrl());
@@ -187,16 +191,30 @@ public class Carousel extends Composite{
 		// change the title to the modal
 		mainModalPanel.setTitle(listOfAttachmentsToShow.get(currentPreviewPosition).getTitleToShow());
 
+		mainModalPanel.show();
 	}
-	
+
+	private int evaluateImagePosition(EnhancedImage image) {
+
+		for(int index = 0; index < listOfAttachmentsToShow.size(); index++){
+
+			if(listOfAttachmentsToShow.get(index).equals(image))
+				return index;
+
+		}
+
+		return -1;
+
+	}
+
 	/**
 	 * Change the set of images to show
 	 * @param imagesToShow
 	 */
 	public void updateImages(List<EnhancedImage> imagesToShow){
-		
+
 		listOfAttachmentsToShow = imagesToShow;
-		
+
 	}
 
 }