1 files changed, 99 insertions, 0 deletions
diff --git a/projects/net.wotonomy.web/src/main/java/net/wotonomy/web/WOConditional.java b/projects/net.wotonomy.web/src/main/java/net/wotonomy/web/WOConditional.java
new file mode 100644
index 0000000..124ca11
--- /dev/null
+++ b/projects/net.wotonomy.web/src/main/java/net/wotonomy/web/WOConditional.java
@@ -0,0 +1,99 @@
+/*
+ Wotonomy: OpenStep design patterns for pure Java applications.
+ Copyright (C) 2000 Blacksmith, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see http://www.gnu.org
+ */
+
+package net.wotonomy.web;
+
+import net.wotonomy.foundation.NSDictionary;
+
+/**
+* WOConditional renders whatever is inside its opening and closing tags
+ * only if a condition is met.
+ * Bindings are:
+ * <ul>
+ * <li>condition: a boolean property that indicates whether the contents of the element
+ * should be displayed, invoked, or passed the request form values.</li>
+ * <li>negate: if this is true, then the behavior of the element is reversed, showing its
+ * contents only if the condition is NOT met.</li>
+ * </ul>
+ *
+ * @author ezamudio@nasoft.com
+ * @author $Author: cgruber $
+ * @version $Revision: 893 $
+ */
+public class WOConditional extends WODynamicElement {
+
+    public boolean condition;
+    public boolean negate;
+
+    protected WOConditional() {
+        super();
+    }
+
+    public WOConditional(String aName, NSDictionary aMap, WOElement template) {
+        super(aName, aMap, template);
+    }
+
+    public void setCondition(boolean value) {
+        condition = value;
+    }
+    public boolean condition() {
+        return condition;
+    }
+
+    public void setNegate(boolean value) {
+        negate = value;
+    }
+    public boolean negate() {
+        return negate;
+    }
+
+    protected void pullValuesFromParent(WOComponent c) {
+        condition = booleanForProperty("condition", c);
+        negate    = booleanForProperty("negate", c);
+    }
+
+    public void takeValuesFromRequest(WORequest aRequest, WOContext aContext) {
+        if (rootElement == null)
+            return;
+        pullValuesFromParent(aContext.component());
+        if ((condition && !negate) || (!condition && negate)) {
+            rootElement.takeValuesFromRequest(aRequest, aContext);
+        }
+    }
+
+    public WOActionResults invokeAction(WORequest aRequest, WOContext aContext) {
+        if (rootElement == null)
+            return null;
+        pullValuesFromParent(aContext.component());
+        WOActionResults el = null;
+        if ((condition && !negate) || (!condition && negate)) {
+            el = rootElement.invokeAction(aRequest, aContext);
+        }
+        return el;
+    }
+
+    public void appendToResponse(WOResponse aResponse, WOContext aContext) {
+        if (rootElement == null)
+            return;
+        pullValuesFromParent(aContext.component());
+        if ((condition && !negate) || (!condition && negate)) {
+            rootElement.appendToResponse(aResponse, aContext);
+        }
+    }
+
+}