package com.extjs.serverside.form;import java.util.ArrayList;import java.util.List;public class Form extends Component implements RenderableContainer {	List<Renderable> fieldList = new ArrayList<Renderable>();		List<Renderable> initScript = new ArrayList<Renderable>();	public Form(String fieldName) {		super("Ext.form.Form", fieldName);		setLabelWidth(100);		setLabelAlign("right");		setButtonAlign("right");	}	/**	 * 'left' or 'right'	 * 	 * @param string	 */	public void setLabelAlign(String string) {		setValue("labelAlign", string);	}	public void setLabelWidth(int width) {		setValue("labelWidth", width);	}	public void setButtonAlign(String string) {		setValue("buttonAlign", string);	}	public void addField(Field field) {		fieldList.add(field);	}	public void addFieldSet(String fieldSetName, Field... fields) {		FieldSet fset = new FieldSet(fieldSetName);		for (Field f : fields) {			fset.add(f);		}		fieldList.add(fset);	}		public void addInitScript(final String script) {		initScript.add(new Renderable() {			public String renderAddToContainer(RenderableContainer form) {				return null;			}			public String renderComponent() {				return script;			}		});	}		@Override	public String renderComponent() {		StringBuilder builder = new StringBuilder();		builder.append("Ext.onReady(function(){\n");				for (Renderable r : fieldList) {			builder.append(r.renderComponent());		}		builder.append(renderJavascriptConstructor());		for (Renderable r : fieldList) {			builder.append(r.renderAddToContainer(this)).append('\n');		}								for (Renderable r : initScript) {			builder.append(r.renderComponent()).append('\n');		}		builder.append("})\n");		return builder.toString();	}	class FieldSet implements Renderable {		String label;		List<Field> fields = new ArrayList<Field>();		public FieldSet(String label) {			this.label = label;		}		public FieldSet add(Field field) {			fields.add(field);			return this;		}		public List<Field> getFields() {			return fields;		}		public String renderComponent() {			StringBuilder s = new StringBuilder();			for (Field field : fields) {				s.append(field.renderComponent());			}			s.append('\n');			return s.toString();		}		public String renderAddToContainer(RenderableContainer form) {			String s = form.getFieldName() + ".fieldset(" + "{legend:'" + label + "'},\n";						for (int i=0;i<fields.size(); i++) { 				Field field = fields.get(i);				if (i>0) {					s += ",\n";				}				s += field.fieldName;			}			s += "\n);";			return s;		}	}}