1 files changed, 115 insertions, 0 deletions
diff --git a/bundles/runtime/org.eclipse.fx.ecp.ui/src/org/eclipse/fx/ecp/ui/form/ValidationDecoration.java b/bundles/runtime/org.eclipse.fx.ecp.ui/src/org/eclipse/fx/ecp/ui/form/ValidationDecoration.java
new file mode 100644
index 000000000..134ea8934
--- /dev/null
+++ b/bundles/runtime/org.eclipse.fx.ecp.ui/src/org/eclipse/fx/ecp/ui/form/ValidationDecoration.java
@@ -0,0 +1,115 @@
+package org.eclipse.fx.ecp.ui.form;
+
+import javafx.event.EventHandler;
+import javafx.geometry.Insets;
+import javafx.geometry.Point2D;
+import javafx.geometry.Pos;
+import javafx.geometry.Side;
+import javafx.scene.Node;
+import javafx.scene.control.Control;
+import javafx.scene.control.Label;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.input.MouseEvent;
+import javafx.scene.text.Text;
+import jidefx.animation.AnimationType;
+import jidefx.scene.control.decoration.DecorationUtils;
+import jidefx.scene.control.decoration.Decorator;
+import jidefx.scene.control.popup.BalloonPopupOutline;
+import jidefx.scene.control.popup.ShapedPopup;
+
+import org.eclipse.emf.common.util.Diagnostic;
+import org.eclipse.emf.ecore.EStructuralFeature;
+
+import com.google.common.base.Objects;
+
+public class ValidationDecoration {
+
+	protected final static Image errorImage = new Image(Decorator.class.getResourceAsStream("overlay_error.png"));
+
+	protected Control control;
+	protected final EStructuralFeature feature;
+	protected final ShapedPopup shapedPopup;
+	protected Diagnostic diagnostic;
+	protected Text popupText;
+	
+
+	public ValidationDecoration(Control control, EStructuralFeature feature) {
+		super();
+		this.control = control;
+		this.feature = feature;
+
+		shapedPopup = new ShapedPopup();
+		shapedPopup.setAutoHide(false);
+		shapedPopup.setInsets(new Insets(20));
+		BalloonPopupOutline popupOutline = new BalloonPopupOutline();
+		popupOutline.setArrowSide(Side.TOP);
+		shapedPopup.setPopupOutline(popupOutline);
+		popupText = new Text();
+		popupText.setWrappingWidth(300);
+		shapedPopup.setPopupContent(popupText);
+	}
+
+	public void handleValidation(Diagnostic diagnostic) {
+
+		Diagnostic newDiagnostic = null;
+
+		if (diagnostic != null) {
+			for (Diagnostic childDiagnostic : diagnostic.getChildren()) {
+				Object feature = childDiagnostic.getData().get(1);
+				if (feature == this.feature) {
+					newDiagnostic = childDiagnostic;
+					break;
+				}
+			}
+		}
+
+		if (newDiagnostic != null && (this.diagnostic == null || !equals(newDiagnostic, this.diagnostic)))
+			popupText.setText(newDiagnostic.getMessage());
+
+		if (newDiagnostic != null && !equals(this.diagnostic, newDiagnostic)) {
+			final Decorator<Node> validationDecorator = new Decorator<Node>(createErrorGraphic(), Pos.TOP_LEFT, new Point2D(0, 0), new Insets(0), AnimationType.BOUNCE_IN);
+			DecorationUtils.install(control, validationDecorator);
+
+			final Node node = validationDecorator.getNode();
+			node.setOpacity(0);
+
+			node.setOnMouseEntered(new EventHandler<MouseEvent>() {
+
+				@Override
+				public void handle(MouseEvent arg0) {
+					if (ValidationDecoration.this.diagnostic != null)
+						shapedPopup.showPopup(node, Pos.BOTTOM_CENTER, 0, 5);
+				}
+
+			});
+
+			node.setOnMouseExited(new EventHandler<MouseEvent>() {
+
+				@Override
+				public void handle(MouseEvent arg0) {
+					if (ValidationDecoration.this.diagnostic != null)
+						shapedPopup.hide();
+				}
+
+			});
+
+		} else if (newDiagnostic == null) {
+			DecorationUtils.uninstall(control);
+		}
+
+		this.diagnostic = newDiagnostic;
+	}
+
+	protected static boolean equals(Diagnostic d1, Diagnostic d2) {
+		if (d1 != null && d2 != null)
+			return Objects.equal(d1.getMessage(), d2.getMessage());
+		else
+			return false;
+	}
+
+	public Node createErrorGraphic() {
+		return new Label(null, new ImageView(errorImage));
+	}
+	
+}
+\ No newline at end of file