/*
    * Copyright (c) 2011-2024 PrimeFaces Extensions
    *
    *  Permission is hereby granted, free of charge, to any person obtaining a copy
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    *  copies of the Software, and to permit persons to whom the Software is
    *  furnished to do so, subject to the following conditions:
   *
   *  The above copyright notice and this permission notice shall be included in
   *  all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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   *  THE SOFTWARE.
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  package org.primefaces.extensions.component.fluidgrid;
  
  import java.io.IOException;
  import java.util.Collection;
  
  import javax.faces.FacesException;
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.context.ResponseWriter;
  
  import org.primefaces.expression.SearchExpressionUtils;
  import org.primefaces.extensions.model.fluidgrid.FluidGridItem;
  import org.primefaces.extensions.util.Attrs;
  import org.primefaces.renderkit.CoreRenderer;
  import org.primefaces.util.WidgetBuilder;
  
  /**
   * Renderer for {@link FluidGrid} component.
   *
   * @author Oleg Varaksin / last modified by Melloware
   * @since 0.5
   */
  public class FluidGridRenderer extends CoreRenderer {
  
      private static final String GRID_CLASS = "pe-fluidgrid";
      private static final String GRID_ITEM_CLASS = "pe-fluidgrid-item";
  
      private static final String LIST_ROLE = "list";
      private static final String LIST_ITEM_ROLE = "listitem";
  
      @Override
      public void decode(final FacesContext context, final UIComponent component) {
          decodeBehaviors(context, component);
      }
  
      @Override
      public void encodeEnd(final FacesContext fc, final UIComponent component) throws IOException {
          final FluidGrid fluidGrid = (FluidGrid) component;
  
          encodeMarkup(fc, fluidGrid);
          encodeScript(fc, fluidGrid);
      }
  
      protected void encodeMarkup(final FacesContext fc, final FluidGrid fluidGrid) throws IOException {
          final ResponseWriter writer = fc.getResponseWriter();
          final String clientId = fluidGrid.getClientId(fc);
          final String styleClass = getStyleClassBuilder(fc)
                      .add(GRID_CLASS)
                      .add(fluidGrid.getStyleClass())
                      .build();
  
          writer.startElement("div", fluidGrid);
          writer.writeAttribute("id", clientId, "id");
          writer.writeAttribute(Attrs.CLASS, styleClass, "styleClass");
          if (fluidGrid.getStyle() != null) {
              writer.writeAttribute(Attrs.STYLE, fluidGrid.getStyle(), Attrs.STYLE);
          }
  
          writer.writeAttribute("role", LIST_ROLE, null);
  
          if (fluidGrid.getVar() != null) {
              // dynamic items
              final Object value = fluidGrid.getValue();
              if (value != null) {
                  if (!(value instanceof Collection<?>)) {
                      throw new FacesException("Value in FluidGrid must be of type Collection / List");
                  }
  
                  for (final UIComponent kid : fluidGrid.getChildren()) {
                      if (kid.isRendered() && !(kid instanceof UIFluidGridItem)) {
                          // first render children like stamped elements, etc.
                          renderChild(fc, kid);
                      }
                  }
  
                  final Collection<FluidGridItem> col = (Collection<FluidGridItem>) value;
                  for (final FluidGridItem fluidGridItem : col) {
                      // find ui item by type
                     final UIFluidGridItem uiItem = fluidGrid.getItem(fluidGridItem.getType());
 
                     if (uiItem.isRendered()) {
                         // set data in request scope
                         fluidGrid.setData(fluidGridItem);
 
                         // render item
                         renderItem(fc, writer, fluidGrid, uiItem);
                     }
                 }
             }
         }
         else {
             // static items
             for (final UIComponent kid : fluidGrid.getChildren()) {
                 if (kid.isRendered()) {
                     if (kid instanceof UIFluidGridItem) {
                         // render item
                         renderItem(fc, writer, fluidGrid, (UIFluidGridItem) kid);
                     }
                     else {
                         // render a child like stamped element, etc.
                         renderChild(fc, kid);
                     }
                 }
             }
         }
 
         writer.endElement("div");
     }
 
     protected void encodeScript(final FacesContext fc, final FluidGrid fluidGrid) throws IOException {
         final WidgetBuilder wb = getWidgetBuilder(fc);
         wb.init("ExtFluidGrid", fluidGrid);
         wb.append(",opts:{");
         wb.append("isFitWidth:" + fluidGrid.isFitWidth());
         wb.append(",isOriginLeft:" + fluidGrid.isOriginLeft());
         wb.append(",isOriginTop:" + fluidGrid.isOriginTop());
         wb.append(",isResizeBound:" + fluidGrid.isResizeBound());
         wb.append(",hasImages:" + fluidGrid.isHasImages());
 
         if (fluidGrid.gethGutter() != 0) {
             wb.append(",gutter:" + fluidGrid.gethGutter());
         }
 
         final String stamp = SearchExpressionUtils.resolveClientIdsForClientSide(fc, fluidGrid, fluidGrid.getStamp());
         if (stamp != null) {
             wb.append(",stamp:'" + stamp + "'");
         }
 
         if (fluidGrid.getTransitionDuration() != null) {
             wb.append(",transitionDuration:'" + fluidGrid.getTransitionDuration() + "'");
         }
         else {
             wb.append(",transitionDuration:0");
         }
 
         wb.append("}");
 
         encodeClientBehaviors(fc, fluidGrid);
         wb.finish();
     }
 
     protected void renderItem(final FacesContext fc, final ResponseWriter writer, final FluidGrid fluidGrid,
                 final UIFluidGridItem uiItem)
                 throws IOException {
         writer.startElement("div", null);
 
         if (uiItem.getStyleClass() != null) {
             writer.writeAttribute(Attrs.CLASS, GRID_ITEM_CLASS + " " + uiItem.getStyleClass(), null);
         }
         else {
             writer.writeAttribute(Attrs.CLASS, GRID_ITEM_CLASS, null);
         }
 
         if (fluidGrid.getvGutter() != 0) {
             writer.writeAttribute(Attrs.STYLE, "margin-bottom: " + fluidGrid.getvGutter() + "px", null);
         }
 
         writer.writeAttribute("role", LIST_ITEM_ROLE, null);
 
         // encode content of pe:fluidGridItem
         uiItem.encodeAll(fc);
 
         writer.endElement("div");
     }
 
     @Override
     public void encodeChildren(final FacesContext context, final UIComponent component) {
         // Rendering happens on encodeEnd
     }
 
     @Override
     public boolean getRendersChildren() {
         return true;
     }
 }