1 files changed, 134 insertions, 0 deletions
diff --git a/plugins/org.eclipse.sirius/src/org/eclipse/sirius/business/api/color/AbstractColorUpdater.java b/plugins/org.eclipse.sirius/src/org/eclipse/sirius/business/api/color/AbstractColorUpdater.java
new file mode 100644
index 0000000000..78ac7a7e5d
--- /dev/null
+++ b/plugins/org.eclipse.sirius/src/org/eclipse/sirius/business/api/color/AbstractColorUpdater.java
@@ -0,0 +1,134 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2008, 2009 THALES GLOBAL SERVICES.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.business.api.color;
+
+import org.eclipse.emf.ecore.EObject;
+
+import org.eclipse.sirius.common.tools.api.interpreter.IInterpreter;
+import org.eclipse.sirius.RGBValues;
+import org.eclipse.sirius.SiriusFactory;
+import org.eclipse.sirius.description.ColorDescription;
+import org.eclipse.sirius.description.ComputedColor;
+import org.eclipse.sirius.description.FixedColor;
+import org.eclipse.sirius.description.InterpolatedColor;
+import org.eclipse.sirius.tools.api.interpreter.InterpreterUtil;
+
+/**
+ * Base classe for colors updating.
+ * 
+ * @author cbrun
+ * 
+ */
+public class AbstractColorUpdater {
+    /**
+     * return the computed rgbvalues from an interpolated color description.
+     * 
+     * @param context
+     *            current EObject usde to evaluate expressions.
+     * @param descValue
+     *            interpolated color definition.
+     * @return the computed rgbvalues from an interpolated color description.
+     */
+    protected RGBValues getRGBValueForInterpolatedColor(final EObject context, final InterpolatedColor descValue) {
+        if (context != null) {
+            final IInterpreter interpreter = InterpreterUtil.getInterpreter(context);
+            if (interpreter != null) {
+                return new RGBValuesProvider().getRGBValues(descValue, context, interpreter);
+            }
+        }
+        return SiriusFactory.eINSTANCE.createRGBValues();
+    }
+
+    /**
+     * return the computed rgbvalues from an computed color description.
+     * 
+     * @param context
+     *            current EObject usde to evaluate expressions.
+     * @param descValue
+     *            interpolated color definition.
+     * @return the computed rgbvalues from an computed color description.
+     */
+    protected RGBValues getRGBValueForComputedColor(final EObject context, final ComputedColor descValue) {
+        if (context != null) {
+            final IInterpreter interpreter = InterpreterUtil.getInterpreter(context);
+            if (interpreter != null) {
+                return new RGBValuesProvider().getRGBValues(descValue, context, interpreter);
+            }
+        }
+        return SiriusFactory.eINSTANCE.createRGBValues();
+    }
+
+    /**
+     * return the {@link RGBValues} associated with a fixed color description.
+     * 
+     * @param descValue
+     *            the color defintion.
+     * @return the rgb values.
+     */
+    protected RGBValues getRGBValueForFixedColor(final FixedColor descValue) {
+        RGBValues newValues;
+        newValues = new RGBValuesProvider().getRGBValues(descValue);
+        return newValues;
+    }
+
+    /**
+     * return a default rgbvalue.
+     * 
+     * @return a default rgbvalue.
+     */
+    protected RGBValues createDefaultRGBValue() {
+        final RGBValues newValues = SiriusFactory.eINSTANCE.createRGBValues();
+        newValues.setRed(209);
+        newValues.setGreen(209);
+        newValues.setBlue(209);
+        return newValues;
+    }
+
+    /**
+     * return the rgbvalues corresponding to the current color description.
+     * 
+     * @param context
+     *            current EObject.
+     * @param descValue
+     *            color description.
+     * @return the rgbvalues corresponding to the current color description.
+     */
+    public RGBValues getRGBValuesFromColorDescription(final EObject context, final ColorDescription descValue) {
+        RGBValues newValues;
+        if (descValue instanceof FixedColor) {
+            newValues = getRGBValueForFixedColor((FixedColor) descValue);
+        } else if (descValue instanceof InterpolatedColor) {
+            newValues = getRGBValueForInterpolatedColor(context, (InterpolatedColor) descValue);
+        } else if (descValue instanceof ComputedColor) {
+            newValues = getRGBValueForComputedColor(context, (ComputedColor) descValue);
+        } else {
+            newValues = createDefaultRGBValue();
+        }
+        return newValues;
+    }
+
+    /**
+     * return true if both values are equals.
+     * 
+     * @param originalValue
+     *            the first value.
+     * @param newValues
+     *            the second value.
+     * @return true if both values are equals
+     */
+    public static boolean areEquals(final RGBValues originalValue, final RGBValues newValues) {
+        if (originalValue != null && newValues != null) {
+            return originalValue.getBlue() == newValues.getBlue() && originalValue.getRed() == newValues.getRed() && originalValue.getGreen() == newValues.getGreen();
+        }
+        return false;
+    }
+
+}