| 0,0 → 1,91 |
|---|
| package ak.strutsx; |
| |
| import java.util.Iterator; |
| import java.util.TreeSet; |
| import java.lang.reflect.Array; |
| import javax.servlet.http.HttpServletRequest; |
| import org.apache.struts.validator.DynaValidatorForm; |
| import org.apache.struts.action.ActionErrors; |
| import org.apache.struts.action.ActionMapping; |
| import org.apache.struts.config.FormBeanConfig; |
| import org.apache.struts.config.FormPropertyConfig; |
| |
| public final class ResizeableDynaValidatorForm |
| extends DynaValidatorForm |
| { |
| public void reset(ActionMapping mapping, HttpServletRequest request) |
| { |
| super.reset(mapping, request); |
| resize(mapping, request); |
| } |
| |
| protected void resize(ActionMapping mapping, HttpServletRequest request) |
| { |
| String name = mapping.getName(); |
| if (name == null) return; |
| |
| FormBeanConfig config = mapping.getModuleConfig().findFormBeanConfig(name); |
| if (config == null) return; |
| |
| FormPropertyConfig props[] = config.findFormPropertyConfigs(); |
| for (int i = 0; i < props.length; i++) { |
| if(props[i].getSize() > 0) // for arrays only |
| resize(mapping, request, props[i]); |
| } |
| } |
| |
| protected void resize(ActionMapping mapping, HttpServletRequest request, |
| FormPropertyConfig prop) |
| { |
| String nameStart = prop.getName() + "["; |
| |
| // get all indices |
| TreeSet indices = new TreeSet(); |
| for(Iterator i = request.getParameterMap().keySet().iterator(); i.hasNext(); ) { |
| String name = (String)i.next(); |
| if(name.startsWith(nameStart)) { |
| int p = name.indexOf("]"); |
| if(p > 0) { |
| String index = name.substring(nameStart.length(), p); |
| try { |
| indices.add(new Integer(index)); |
| } |
| catch(NumberFormatException ex) { |
| } |
| } |
| } |
| } |
| |
| // find last index in sequence |
| int lastIndex = -1; |
| for(Iterator i = indices.iterator(); i.hasNext(); ) { |
| Integer idx = (Integer)i.next(); |
| if(idx.intValue() == lastIndex+1) |
| lastIndex++; |
| else |
| break; |
| } |
| |
| // grow |
| if(lastIndex > 0) { |
| Class clazz = prop.getTypeClass(); |
| Object initialValue = Array.newInstance(clazz.getComponentType(), lastIndex+1); |
| for (int i = 0; i < lastIndex+1; i++) { |
| try { |
| Array.set(initialValue, i, clazz.getComponentType().newInstance()); |
| } |
| catch (Throwable t) { |
| ; // Probably does not have a zero-args constructor |
| } |
| } |
| set(prop.getName(), initialValue); |
| } |
| } |
| |
| public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) |
| { |
| ActionErrors errors = super.validate(mapping, request); |
| |
| return errors; |
| } |
| } |