First cut of dialog/wizard framework

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2577 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/wizard/WizardManager.java

@@ -0,0 +1,50 @@
+package org.alfresco.web.bean.wizard;
+
+import javax.faces.context.FacesContext;
+
+import org.alfresco.error.AlfrescoRuntimeException;
+import org.alfresco.web.app.servlet.FacesHelper;
+import org.alfresco.web.config.WizardsConfigElement.WizardConfig;
+
+/**
+ * Bean that manages the wizard framework
+ * 
+ * @author gavinc
+ */
+public class WizardManager
+{
+   protected WizardConfig currentWizardConfig;
+   protected IWizardBean currentWizard;
+   
+   /**
+    * Sets the current wizard
+    * 
+    * @param config The configuration for the wizard to set
+    */
+   public void setCurrentWizard(WizardConfig config)
+   {
+      this.currentWizardConfig = config;
+      
+      String beanName = this.currentWizardConfig.getManagedBean();
+      this.currentWizard = (IWizardBean)FacesHelper.getManagedBean(
+            FacesContext.getCurrentInstance(), beanName);
+      
+      if (this.currentWizard == null)
+      {
+         throw new AlfrescoRuntimeException("Failed to find managed bean '" + beanName + "'");
+      }
+      
+      // initialise the managed bean
+      this.currentWizard.init();
+   }
+   
+   /**
+    * Returns the current wizard bean being managed
+    * 
+    * @return The current managed bean
+    */
+   public IWizardBean getBean()
+   {
+      return this.currentWizard;
+   }
+}