001    /*
002     * Copyright © 2008, 2012 Pedro Agulló Soliveres.
003     * 
004     * This file is part of DirectJNgine.
005     *
006     * DirectJNgine is free software: you can redistribute it and/or modify
007     * it under the terms of the GNU Lesser General Public License as published by
008     * the Free Software Foundation, either version 3 of the License.
009     *
010     * Commercial use is permitted to the extent that the code/component(s)
011     * do NOT become part of another Open Source or Commercially developed
012     * licensed development library or toolkit without explicit permission.
013     *
014     * DirectJNgine is distributed in the hope that it will be useful,
015     * but WITHOUT ANY WARRANTY; without even the implied warranty of
016     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
017     * GNU Lesser General Public License for more details.
018     *
019     * You should have received a copy of the GNU Lesser General Public License
020     * along with DirectJNgine.  If not, see <http://www.gnu.org/licenses/>.
021     * 
022     * This software uses the ExtJs library (http://extjs.com), which is 
023     * distributed under the GPL v3 license (see http://extjs.com/license).
024     */
025    
026    package com.softwarementors.extjs.djn.api;
027    
028    import java.lang.reflect.Method;
029    import java.lang.reflect.Type;
030    import java.util.Map;
031    
032    import com.google.gson.JsonArray;
033    import com.softwarementors.extjs.djn.StringUtils;
034    
035    public class RegisteredStandardMethod extends RegisteredMethod {
036      private boolean formHandler;
037      private boolean handleParametersAsJsonArray;
038      
039      
040      /* package */ RegisteredStandardMethod( RegisteredAction action, String name, Method method, boolean formHandler) {
041        super( action, method, name );
042        assert !StringUtils.isEmpty(name);
043    
044        this.formHandler = formHandler;
045        this.handleParametersAsJsonArray = !formHandler && method.getParameterTypes().length == 1 && method.getParameterTypes()[0].equals( JsonArray.class);
046        assert !this.formHandler || isValidFormHandlingMethod(method);
047        
048        assert !action.hasStandardMethod(this.getName());
049        action.addStandardMethod(this);
050      }
051      
052      public Type[] getGsonParameterTypes() {
053        return Registry.getParameterTypes(getMethod());
054      }
055      
056      public static boolean isValidFormHandlingMethod( Method method ) {
057        assert method != null;
058        
059        return method.getParameterTypes().length == 2 && method.getParameterTypes()[0].equals( Map.class) || !method.getParameterTypes()[1].equals( Map.class);
060      }
061      
062      public boolean isFormHandler() {
063        return this.formHandler;
064      }
065    
066      public int getClientParameterCount() {
067        // If this is a form handler, then the client must pass just one parameter
068        if( isFormHandler() ) {
069          return 1;
070        }
071        return getParameterCount();
072      }
073    
074      public boolean getHandleParametersAsJsonArray() {
075        return this.handleParametersAsJsonArray;
076      }
077    
078      @Override
079      public RegisteredMethodType getType() {
080        return RegisteredMethodType.STANDARD;
081      }  
082    }