content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 2002-2004 The Apache Software Foundation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*
   * $Id: DOMWSFilter.java,v 1.2.4.1 2005/09/06 06:14:31 pvedula Exp $
   */
  package jaxp.sun.org.apache.xalan.internal.xsltc.dom;
  
  import jaxp.sun.org.apache.xalan.internal.xsltc.DOM;
  import jaxp.sun.org.apache.xalan.internal.xsltc.DOMEnhancedForDTM;
  import jaxp.sun.org.apache.xalan.internal.xsltc.StripFilter;
  import jaxp.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
  import jaxp.sun.org.apache.xalan.internal.xsltc.runtime.Hashtable;
  import jaxp.sun.org.apache.xml.internal.dtm.DTM;
  import jaxp.sun.org.apache.xml.internal.dtm.DTMWSFilter;
  
  /**
   * A wrapper class that adapts the
   * {@link DTMWSFilter DTMWSFilter} interface to the XSLTC
   * DOM {@link StripFilter StripFilter} interface.
   */
  public class DOMWSFilter implements DTMWSFilter {
  
      private AbstractTranslet m_translet;
      private StripFilter m_filter;
  
      // The Hashtable for DTM to mapping array
      private Hashtable m_mappings;
  
      // Cache the DTM and mapping that are used last time
      private DTM m_currentDTM;
      private short[] m_currentMapping;
  
      /**
       * Construct an adapter connecting the <code>DTMWSFilter</code> interface
       * to the <code>StripFilter</code> interface.
       *
       * @param translet A translet that also implements the StripFilter
       * interface.
       *
       * @see DTMWSFilter
       * @see StripFilter
       */
      public DOMWSFilter(AbstractTranslet translet) {
          m_translet = translet;
          m_mappings = new Hashtable();
  
          if (translet instanceof StripFilter) {
              m_filter = (StripFilter) translet;
          }
      }
  
      /**
       * Test whether whitespace-only text nodes are visible in the logical
       * view of <code>DTM</code>. Normally, this function
       * will be called by the implementation of <code>DTM</code>;
       * it is not normally called directly from
       * user code.
       *
       * @param node int handle of the node.
       * @param dtm the DTM that owns this node
       * @return one of <code>NOTSTRIP</code>, <code>STRIP</code> or
       * <code>INHERIT</code>.
       */
      public short getShouldStripSpace(int node, DTM dtm) {
          if (m_filter != null && dtm instanceof DOM) {
              DOM dom = (DOM)dtm;
              int type = 0;
  
              if (dtm instanceof DOMEnhancedForDTM) {
                  DOMEnhancedForDTM mappableDOM = (DOMEnhancedForDTM)dtm;
  
                  short[] mapping;
                  if (dtm == m_currentDTM) {
                      mapping = m_currentMapping;
                  }
                  else {
                      mapping = (short[])m_mappings.get(dtm);
                      if (mapping == null) {
                          mapping = mappableDOM.getMapping(
                                       m_translet.getNamesArray(),
                                       m_translet.getUrisArray(),
                                       m_translet.getTypesArray());
                          m_mappings.put(dtm, mapping);
                          m_currentDTM = dtm;
                          m_currentMapping = mapping;
                      }
                  }
  
                  int expType = mappableDOM.getExpandedTypeID(node);
  
                  // %OPT% The mapping array does not have information about all the
                  // exptypes. However it does contain enough information about all names
                  // in the translet's namesArray. If the expType does not fall into the
                  // range of the mapping array, it means that the expType is not for one
                  // of the recognized names. In this case we can just set the type to -1.
                  if (expType >= 0 && expType < mapping.length)
                    type = mapping[expType];
                  else
                    type = -1;
  
              }
              else {
                  return INHERIT;
              }
  
              if (m_filter.stripSpace(dom, node, type)) {
                  return STRIP;
              } else {
                  return NOTSTRIP;
              }
          } else {
              return NOTSTRIP;
          }
      }
  }
  