Made #1642 fix more generic by moving implementation to AbstractComponent

svn changeset:5250/svn branch:trunk

1 files changed, 52 insertions, 0 deletions

diff --git a/src/com/itmill/toolkit/ui/AbstractComponent.java b/src/com/itmill/toolkit/ui/AbstractComponent.java
index 83502aa40c..634f58dbac 100644
--- a/src/com/itmill/toolkit/ui/AbstractComponent.java
+++ b/src/com/itmill/toolkit/ui/AbstractComponent.java
@@ -19,6 +19,7 @@ import com.itmill.toolkit.terminal.ErrorMessage;
 import com.itmill.toolkit.terminal.PaintException;
 import com.itmill.toolkit.terminal.PaintTarget;
 import com.itmill.toolkit.terminal.Resource;
+import com.itmill.toolkit.terminal.Terminal;
 
 /**
  * An abstract class that defines default implementation for the
@@ -121,6 +122,8 @@ public abstract class AbstractComponent implements Component, MethodEventSource
     private int widthUnit = UNITS_PIXELS;
     private int heightUnit = UNITS_PIXELS;
 
+    private ComponentErrorHandler errorHandler = null;
+
     /* Constructor */
 
     /**
@@ -1170,4 +1173,53 @@ public abstract class AbstractComponent implements Component, MethodEventSource
         return values;
     }
 
+    public interface ComponentErrorEvent extends Terminal.ErrorEvent {
+    }
+
+    public interface ComponentErrorHandler {
+        /**
+         * Handle the component error
+         * 
+         * @param event
+         * @return True if the error has been handled False, otherwise
+         */
+        public boolean handleComponentError(ComponentErrorEvent event);
+    }
+
+    /**
+     * Gets the error handler for the component.
+     * 
+     * The error handler is dispatched whenever there is an error processing the
+     * data coming from the client.
+     * 
+     * @return
+     */
+    public ComponentErrorHandler getErrorHandler() {
+        return errorHandler;
+    }
+
+    /**
+     * Sets the error handler for the component.
+     * 
+     * The error handler is dispatched whenever there is an error processing the
+     * data coming from the client.
+     * 
+     * If the error handler is not set, the application error handler is used to
+     * handle the exception.
+     * 
+     * @param errorHandler
+     *                AbstractField specific error handler
+     */
+    public void setErrorHandler(ComponentErrorHandler errorHandler) {
+        this.errorHandler = errorHandler;
+    }
+
+    public boolean handleError(ComponentErrorEvent error) {
+        if (errorHandler != null) {
+            return errorHandler.handleComponentError(error);
+        }
+        return false;
+
+    }
+
 }
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