first version of external tools

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / externaltools / internal / registry / RefreshScopeVariable.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/externaltools/internal/registry/RefreshScopeVariable.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/externaltools/internal/registry/RefreshScopeVariable.java
new file mode 100644 (file)
index 0000000..9790a43
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/externaltools/internal/registry/RefreshScopeVariable.java
@@ -0,0 +1,62 @@
+package net.sourceforge.phpdt.externaltools.internal.registry;
+
+/**********************************************************************
+Copyright (c) 2002 IBM Corp. and others. All rights reserved.
+This file is made available under the terms of the Common Public License v1.0
+which accompanies this distribution, and is available at
+http://www.eclipse.org/legal/cpl-v10.html
+ 
+Contributors:
+**********************************************************************/
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.IConfigurationElement;
+import net.sourceforge.phpdt.externaltools.variable.ExpandVariableContext;
+import net.sourceforge.phpdt.externaltools.variable.IVariableResourceExpander;
+
+/**
+ * Represents the variable for a refresh scope.
+ */
+public final class RefreshScopeVariable extends ExternalToolVariable {
+       private static final DefaultResourceExpander defaultExpander = new DefaultResourceExpander();
+       
+       private IVariableResourceExpander expander = null;
+
+       /**
+        * Creates a refresh scope variable
+        * 
+        * @param tag the variable tag
+        * @param description a short description of what the variable will expand to
+        * @param element the configuration element
+        */
+       /*package*/ RefreshScopeVariable(String tag, String description, IConfigurationElement element) {
+               super(tag, description, element);
+       }
+
+       /**
+        * Returns the object that can expand the variable
+        * as resources.
+        */
+       public IVariableResourceExpander getExpander() {
+               if (expander == null) {
+                       expander = (IVariableResourceExpander) createObject(ExternalToolVariableRegistry.TAG_EXPANDER_CLASS);
+                       if (expander == null)
+                               expander = defaultExpander;
+               }
+               return expander;
+       }
+
+
+       /**
+        * Default variable resource expander implementation which does
+        * not expand variables, but just returns <code>null</code>.
+        */     
+       private static final class DefaultResourceExpander implements IVariableResourceExpander {
+               /* (non-Javadoc)
+                * Method declared on IVariableResourceExpander.
+                */
+               public IResource[] getResources(String varTag, String varValue, ExpandVariableContext context) {
+                       return null;
+               }
+       }
+}