Package org.richfaces.renderkit.html

Source Code of org.richfaces.renderkit.html.MenuItemRendererBase

/**
* License Agreement.
*
*  JBoss RichFaces - Ajax4jsf Component Library
*
* Copyright (C) 2007  Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
*/

package org.richfaces.renderkit.html;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.faces.component.UIComponent;
import javax.faces.component.UIParameter;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import javax.faces.event.PhaseId;

import org.ajax4jsf.context.AjaxContext;
import org.ajax4jsf.event.AjaxEvent;
import org.ajax4jsf.javascript.ScriptUtils;
import org.ajax4jsf.renderkit.AjaxRendererUtils;
import org.ajax4jsf.renderkit.ComponentVariables;
import org.ajax4jsf.renderkit.ComponentsVariableResolver;
import org.richfaces.component.MenuComponent;
import org.richfaces.component.UIMenuItem;
import org.richfaces.component.util.ViewUtil;
import org.richfaces.renderkit.CompositeRenderer;


public class MenuItemRendererBase extends CompositeRenderer {
 
  private MenuItemRendererDelegate delegate;
 
  public MenuItemRendererBase() {
     delegate = new MenuItemRendererDelegate();
  }

    protected Class getComponentClass() {
        return UIMenuItem.class;
    }

    public boolean getRendersChildren() {
        return true;
    }

    public void doDecode(FacesContext context, UIComponent component) {

        super.doDecode(context, component);

        ExternalContext exCtx = context.getExternalContext();
        Map rqMap = exCtx.getRequestParameterMap();
        Object clnId = rqMap.get(component.getClientId(context));
        if (clnId == null) {
            clnId = rqMap.get(component.getClientId(context) + ":hidden");
        }
        UIMenuItem menuItem = (UIMenuItem) component;
        if (clnId != null) {

            // enqueue event here for this component or for component with Id
            // taken from forId attribute

            String mode = resolveSubmitMode(menuItem);
            if (!MenuComponent.MODE_NONE.equalsIgnoreCase(mode)) {

                ActionEvent actionEvent = new ActionEvent(menuItem);
               
                if(MenuComponent.MODE_AJAX.equalsIgnoreCase(mode)){
                new AjaxEvent(menuItem).queue();
               
                    if (AjaxRendererUtils.isAjaxRequest(context)) {
                       
                        AjaxContext.getCurrentInstance(context)
                            .addAreasToProcessFromComponent(context, menuItem);
                    }
              }
               
                if (menuItem.isImmediate()) {
                  actionEvent.setPhaseId(PhaseId.APPLY_REQUEST_VALUES);
                } else {
                    actionEvent.setPhaseId(PhaseId.INVOKE_APPLICATION);
                }
                menuItem.queueEvent(actionEvent);
            }
        }
    }
    // find and encode UIParameter's components
    public List encodeParams(FacesContext context, UIMenuItem component) throws IOException {
     
      UIMenuItem menuItem = component;
      List params = new ArrayList();
      StringBuffer buff;
     
      List children = menuItem.getChildren();
      for (Iterator iterator = children.iterator(); iterator.hasNext();) {
        UIComponent child = (UIComponent) iterator.next();
       
        if(child instanceof UIParameter){
         
          UIParameter param = (UIParameter)child;
        String name = param.getName();
       
        if (name != null) {
          buff = new StringBuffer();
          Object value = param.getValue();
          buff.append("params[");
          buff.append(ScriptUtils.toScript(name));
          buff.append("] = ");
          buff.append(ScriptUtils.toScript(value));
          buff.append(";");
          params.add(buff.toString());
        }
     
      }
      }
     
      return params;
    }
    public String encodeParamsAsObject(FacesContext context, UIMenuItem component) throws IOException {
     
      UIMenuItem menuItem = component;
      StringBuffer buff = new StringBuffer("{");
     
      List children = menuItem.getChildren();
      for (Iterator iterator = children.iterator(); iterator.hasNext();) {
        UIComponent child = (UIComponent) iterator.next();
       
        if(child instanceof UIParameter){
         
          UIParameter param = (UIParameter)child;
        String name = param.getName();
       
        if (name != null) {
          Object value = param.getValue();
          buff.append(ScriptUtils.toScript(name));
          buff.append(":");
          buff.append(ScriptUtils.toScript(value));
          buff.append(",");
        }
      }
      }
      if (buff.length()>1) {
        buff.deleteCharAt(buff.length()-1);
        buff.append("}");
        return buff.toString();
      } else {
        return null;
      }
    }   
   
    public void initializeResources(FacesContext context, UIMenuItem menuItem)
            throws IOException {
        ComponentVariables variables =
                ComponentsVariableResolver.getVariables(this, menuItem);

        String resource = menuItem.isDisabled()
                ? ViewUtil.getResourceURL(menuItem.getIconDisabled())
                : ViewUtil.getResourceURL(menuItem.getIcon());
        if (resource == null || (resource.length() == 0)) {
            resource = getResource("images/spacer.gif").getUri(
                    context, menuItem);
        }
        variables.setVariable("icon", resource);
       
        // create attributes string for item without parent
        StringBuffer attr = new StringBuffer();
        String attrStr = "";
        if (!(menuItem.getParent() instanceof MenuComponent))
        {
          String styleClass = (String) menuItem.getAttributes().get("styleClass");
          String str = "";
          attr.append(",{");
          if (null!=styleClass && styleClass.length()>0) {
            attr.append("styleClass:");
              attr.append(ScriptUtils.toScript(styleClass));
              str = ",";
          }
          String onselect = (String) menuItem.getAttributes().get("onselect");
          if (null!=onselect && onselect.length()>0) {
            attr.append(str);
            attr.append("onselect:function(event){");
            attr.append(onselect);
            attr.append("}");
          }
          attr.append("}");
          if (attr.length()>3) attrStr = attr.toString();
        }
       
        if (menuItem.isDisabled()) {
            variables.setVariable("iconDisabledClasses",
                    "dr-menu-icon-disabled rich-menu-item-icon-disabled");
        } else {

            variables.setVariable("onmouseoutInlineStyles",
                    collectInlineStyles(context, menuItem, false));
            variables.setVariable("onmouseoverInlineStyles",
                collectInlineStyles(context, menuItem, true));

            //-----------------------------------
            StringBuffer scriptValue = new StringBuffer();
            String mode = resolveSubmitMode(menuItem);
           
            if (MenuComponent.MODE_AJAX.equalsIgnoreCase(mode)) {
              scriptValue.append("RichFaces.Menu.updateItem(event,this");
              scriptValue.append(attrStr);
              scriptValue.append(");");
                scriptValue.append(AjaxRendererUtils.buildOnClick(
                        menuItem, context).toString());
            } else if (MenuComponent.MODE_SERVER.equalsIgnoreCase(mode)) {
             
            /*
             String id = menuItem.getClientId(context);
      scriptValue.append("var form=A4J.findForm(this);");
      scriptValue.append("var params={");
      scriptValue.append(ScriptUtils.toScript(id + ":hidden"));
      scriptValue.append(":");
      scriptValue.append(ScriptUtils.toScript(id));
      scriptValue.append("};");
     
      List params = encodeParams(context, menuItem);
      if(!params.isEmpty()){
        for (Iterator iterator = params.iterator(); iterator.hasNext();) {
          scriptValue.append(iterator.next());
        }
      }
     
      scriptValue.append("Richfaces.jsFormSubmit(");
      scriptValue.append(ScriptUtils.toScript(id)).append(",");
     
      scriptValue.append("form.id").append(",");
          Object target = menuItem.getAttributes().get("target");
                
          if (null != target) {
         scriptValue.append(ScriptUtils.toScript(target));
       } else {
        scriptValue.append("''");
      }
         
          scriptValue.append(",");
          scriptValue.append("params);return false;");
          */
              scriptValue.append("RichFaces.Menu.submitForm(event,this");
              String params = encodeParamsAsObject(context, menuItem);
              if (null!=params) {
                scriptValue.append(",");
                scriptValue.append(params);
              }
              String target = (String) menuItem.getAttributes().get("target");
              if (null != target && target.length()>0) {
                scriptValue.append(",");
             scriptValue.append(ScriptUtils.toScript(target));
              }
             
              scriptValue.append(attrStr);
              scriptValue.append(")");
             
            } else {
              scriptValue.append("RichFaces.Menu.updateItem(event,this");
              scriptValue.append(attrStr);
              scriptValue.append(");");
                scriptValue.append(getStringAttributeOrEmptyString(menuItem, "onclick"));
            }
            if (resource.length() > 0) {
                variables.setVariable("onclick", scriptValue.toString());
            }
            //-------------------------------
          }

    }

    protected String getStringAttributeOrEmptyString(UIComponent component,
                                                     String attributeName) {
        String attributeValue =
                (String) component.getAttributes().get(attributeName);

        if (null == attributeValue) {
            attributeValue = "";
        }

        return attributeValue;
    }

    protected UIComponent getIconFacet(UIMenuItem menuItem) {
        UIComponent iconFacet = null;
        if (menuItem.isDisabled()) {
            iconFacet = menuItem.getFacet("iconDisabled");
        } else {
            iconFacet = menuItem.getFacet("icon");
        }
        return iconFacet;
    }

    protected String resolveSubmitMode(UIMenuItem menuItem) {
        String submitMode = menuItem.getSubmitMode();
        if (null != submitMode) {
            return submitMode;
        }
        UIComponent parent = menuItem.getParent();
        while (null != parent) {
            if (parent instanceof MenuComponent) {
                return ((MenuComponent) parent).getSubmitMode();
            }
            parent = parent.getParent();
        }

        return MenuComponent.MODE_SERVER;
    }

    protected String collectInlineStyles(FacesContext context, UIMenuItem menuItem, boolean isOnmouseover) {
      return delegate.collectInlineStyles(context, menuItem, isOnmouseover);
    }
   
    @Deprecated
    protected String processInlineStyles(FacesContext context, UIMenuItem menuItem, boolean isOnmouseover) {
      return delegate.processInlineStyles(context, menuItem, isOnmouseover);
    }
   
    protected UIComponent getParentMenu(FacesContext context, UIMenuItem menuItem) {
    return delegate.getParentMenu(context, menuItem);
  }
   
    public void initializeStyles(FacesContext context, UIMenuItem menuItem) {
      ComponentVariables variables =
      ComponentsVariableResolver.getVariables(this, menuItem);
    delegate.initializeStyles(context, menuItem, menuItem.isDisabled(), variables);
  }
}
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