Package org.richfaces.renderkit.html

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

/**
* 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.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;

import org.ajax4jsf.renderkit.HeaderResourcesRendererBase;
import org.ajax4jsf.renderkit.RendererUtils.HTML;
import org.richfaces.component.UIToolBar;
import org.richfaces.component.UIToolBarGroup;
import org.richfaces.component.util.ViewUtil;
import org.richfaces.renderkit.html.images.DotSeparatorImage;
import org.richfaces.renderkit.html.images.GridSeparatorImage;
import org.richfaces.renderkit.html.images.LineSeparatorImage;
import org.richfaces.renderkit.html.images.SquareSeparatorImage;


public class ToolBarRendererBase extends HeaderResourcesRendererBase {
  private final static String[] ON_ITEM_EVENTS = new String[] {
    "onitemkeydown",
    "onitemkeypress",
    "onitemkeyup",
    "onitemclick",
    "onitemdblclick",
    "onitemmousedown",
    "onitemmousemove",
    "onitemmouseover",
    "onitemmouseout",
    "onitemmouseup"
  };
 
  public void encodeChildren(FacesContext facesContext, UIComponent component) throws IOException {
    UIToolBar toolBar = (UIToolBar) component;
    List children = toolBar.getChildren();
    String contentClass = (String) toolBar.getAttributes().get("contentClass");
    if (null == contentClass) contentClass = "";
    String contentStyle = (String) toolBar.getAttributes().get("contentStyle");
    if(children != null){
      List childrenToTheLeft = new LinkedList();
      List childrenToTheRight = new LinkedList();
      for (Iterator iter = children.iterator(); iter.hasNext();) {
        UIComponent child = (UIComponent) iter.next();
        if(child.isRendered()){
          if (child instanceof UIToolBarGroup) {
            UIToolBarGroup group = (UIToolBarGroup) child;
            String location = group.getLocation();
            if(location != null && location.equals("right")){
              childrenToTheRight.add(child);
            } else {
              childrenToTheLeft.add(child);
            }
          } else {
            childrenToTheLeft.add(child);
          }
        }
      }
     
      ResponseWriter writer = facesContext.getResponseWriter();
      for (Iterator it = childrenToTheLeft.iterator(); it.hasNext();) {       
        UIComponent child = (UIComponent) it.next();
        if (! (child instanceof UIToolBarGroup)) {
          writer.startElement("td", component);         
          writer.writeAttribute("class", "dr-toolbar-int rich-toolbar-item " + contentClass, null);
          getUtils().writeAttribute(writer, "style", contentStyle);
          encodeEventsAttributes(facesContext, child, writer);
        }       
        renderChild(facesContext, child);
        if (! (child instanceof UIToolBarGroup)) {
          writer.endElement("td");         
        }
        if (it.hasNext()) {
          insertSeparatorIfNeed(facesContext, toolBar, writer);
        }
      }       
     
      writer.startElement("td", component);
      writer.writeAttribute("width", "100%", null);
      writer.endElement("td");
//      if (!childrenToTheLeft.isEmpty() && !childrenToTheRight.isEmpty()) {       
//        insertSeparatorIfNeed(writer, facesContext, toolBar);
//      }
     
      for (Iterator it = childrenToTheRight.iterator(); it.hasNext();) {
        UIComponent child = (UIComponent) it.next();         
        renderChild(facesContext, child);
        if (it.hasNext()) {
          insertSeparatorIfNeed(facesContext, toolBar, writer);
        }
      }
    }
  }
 
  /**
   * Inserts separator between toolbar items. Uses facet "itemSeparator" if it is set
   * and default separator implementation if facet is not set.
   * @param context - faces context
   * @param component - component
   * @param writer - response writer
   * @throws IOException - in case of IOException during writing to the ResponseWriter
   */
  protected void insertSeparatorIfNeed(FacesContext context, UIComponent component, ResponseWriter writer) throws IOException {
      UIComponent separatorFacet = component.getFacet("itemSeparator");
      boolean isSeparatorFacetRendered = (separatorFacet != null) ? separatorFacet.isRendered() : false;
      if (isSeparatorFacetRendered) {
    writer.startElement(HTML.td_ELEM, component);
    writer.writeAttribute(HTML.class_ATTRIBUTE, "rich-toolbar-separator", null);
    renderChild(context, separatorFacet);
    writer.endElement(HTML.td_ELEM);
      }
      else {
    insertDefaultSeparatorIfNeed(context, component, writer);
   }
  }

  /**
   * Inserts default separator. Possible values are:
   * "square", "disc", "grid", "line" - for separators provided by component inplementation;
   * "none" - for no separators between toolbar items;
   * URI string value - for custom images specified by the page author.
   *
   * @param context - faces context
   * @param component - component
   * @param writer - response writer
   * @throws IOException - in case of IOException during writing to the ResponseWriter
   */
  protected void insertDefaultSeparatorIfNeed(FacesContext context, UIComponent component, ResponseWriter writer) throws IOException {
   
    String itemSeparator = (String)component.getAttributes().get("itemSeparator");
    if (itemSeparator != null && itemSeparator.length()!=0 && ! itemSeparator.equalsIgnoreCase("none")){
      String uri = null;     
      if (itemSeparator.equalsIgnoreCase("square")) {
        uri = getResource(SquareSeparatorImage.class.getName()).getUri(context, component);
      } else if (itemSeparator.equalsIgnoreCase("disc")) {
        uri = getResource(DotSeparatorImage.class.getName()).getUri(context, component);
      } else if (itemSeparator.equalsIgnoreCase("grid")) {
        uri = getResource(GridSeparatorImage.class.getName()).getUri(context, component);       
      } else if (itemSeparator.equalsIgnoreCase("line")) {
        uri = getResource(LineSeparatorImage.class.getName()).getUri(context, component);
      } else {
            // let the user specify URI to custom separator image in "itemSeparator" attribute
            uri = ViewUtil.getResourceURL(itemSeparator);
      }
      writer.startElement(HTML.td_ELEM, component);
      writer.writeAttribute(HTML.align_ATTRIBUTE, "center", null);
      getUtils().writeAttribute(writer, HTML.class_ATTRIBUTE, component.getAttributes().get("separatorClass"));     
      writer.startElement(HTML.IMG_ELEMENT, component);     
      getUtils().writeAttribute(writer, HTML.src_ATTRIBUTE, uri);
      getUtils().writeAttribute(writer, HTML.alt_ATTRIBUTE, "");
      writer.endElement(HTML.IMG_ELEMENT);
      writer.endElement(HTML.td_ELEM);     
    }
  }

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

  public boolean getRendersChildren() {
    return true;
  }
 
  protected void encodeEventsAttributes(FacesContext facesContext, UIComponent component, ResponseWriter writer)
      throws IOException {
    Map attributes = getParentToolBar(component).getAttributes();
    Set encodedAttributes = new HashSet();
   
    for (int i = 0; i < ON_ITEM_EVENTS.length; i++) {
      Object value = attributes.get(ON_ITEM_EVENTS[i]);
      if (null != value && !"".equals(value)) {
        String eventName = ON_ITEM_EVENTS[i].replace("item", "");
        encodedAttributes.add(eventName);
        Object selfEvent = component.getAttributes().get(eventName);
        if (null == selfEvent) {
          selfEvent = "";
        }
        writer.writeAttribute(eventName, selfEvent + ";" + value, null);
      }
    }
    encodedAttributes.add(HTML.class_ATTRIBUTE);
    encodedAttributes.add(HTML.style_ATTRIBUTE);
    getUtils().encodePassThruWithExclusionsArray(facesContext, component, encodedAttributes.toArray());
  }

  public UIToolBar getParentToolBar(UIComponent component) {
    if (component instanceof UIToolBar) {
      return (UIToolBar) component;
    } else if (component instanceof UIToolBarGroup) {
            return ((UIToolBarGroup)component).getToolBar();
            } else {
            UIComponent parent = component.getParent();
            if (!(parent instanceof UIToolBar)) {
              return null;
            } else {
              return (UIToolBar) parent;
            }
          }
  }

}
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