package net.wotonomy.web;

 import net.wotonomy.foundation.NSArray;

 import net.wotonomy.foundation.NSDictionary;

 import net.wotonomy.foundation.NSKeyValueCodingAdditions;

 public class WOPopUpButton extends WOInput {

     public WOPopUpButton() {

         super();

     }

     public WOPopUpButton(String aName, NSDictionary assocs, WOElement template) {

         super(aName, assocs, template);

     }

     protected String inputType() {

         return "SELECT";

     }

     protected int inputSize() {

         return 1;

     }

     protected NSArray list(WOContext c) {

         NSArray l = (NSArray)valueForProperty("list", c.component());

         if (l == null)

             l = NSArray.EmptyArray;

         return l;

     }

     protected void setItem(Object v, WOContext c) {

         if (associations.objectForKey("item") == null)

             return;

         setValueForProperty("item", v, c.component());

     }

     protected Object item(WOContext c) {

         return valueForProperty("item", c.component());

     }

     protected void setSelection(Object v, WOContext c) {

         if (associations.objectForKey("selection") == null)

             return;

         setValueForProperty("selection", v, c.component());

     }

     protected Object selection(WOContext c) {

         return valueForProperty("selection", c.component());

     }

     public Object value(WOContext c) {

         return null;

     }

     public void appendToResponse(WOResponse r, WOContext c) {

         r.appendContentString("<SELECT NAME=\"");

         r.appendContentString(inputName(c));

         r.appendContentString("\" SIZE=");

         r.appendContentString(Integer.toString(inputSize()));

         r.appendContentString(">");

         java.util.Enumeration numerador = list(c).objectEnumerator();

         String displayKey = stringForProperty("displayString", c.component());

         String valueKey = stringForProperty("value", c.component());

         Object sel = selection(c);

         if (sel == null)

             sel = item(c);

         int pos = 0;

         while (numerador.hasMoreElements()) {

             Object item = numerador.nextElement();

             setItem(item, c);

             r.appendContentString("<OPTION ");

             //Append the "SELECTED" attribute if it's the selected item

             if (sel != null && item.equals(sel))

                 r.appendContentString("SELECTED ");

             r.appendContentString("VALUE=\"");

             //Append the value

             if (valueKey != null && item instanceof NSKeyValueCodingAdditions) {

                 Object val = ((NSKeyValueCodingAdditions)item).valueForKeyPath(valueKey);

                 if (val == null)

                     val = "null";

                 r.appendContentString(val.toString());

             } else

                 r.appendContentString(Integer.toString(pos));

             r.appendContentString("\">");

             //Append display string

             if (displayKey != null && item instanceof NSKeyValueCodingAdditions) {

                 Object ds = ((NSKeyValueCodingAdditions)item).valueForKeyPath(displayKey);

                 if (ds == null)

                     ds = "";

                 r.appendContentString(ds.toString());

             } else

                 r.appendContentString(item.toString());

             r.appendContentString("\n");

             pos++;

         }

         r.appendContentString("</SELECT>");

     }

     protected void select(Object v, WOContext c) {

         if (associations.objectForKey("selection") != null) {

             setSelection(v, c);

             return;

         }

         if (associations.objectForKey("item") != null) {

             setItem(v,c);

         }

     }

     public void takeValuesFromRequest(WORequest r, WOContext c) {

         Object val = r.formValueForKey(inputName(c));

         if (val == null)

             return;

         NSArray list = list(c);

         String valueKey = stringForProperty("value", c.component());

         //If no value binding, just get the index

         if (valueKey == null) {

             int pos = Integer.parseInt(val.toString());

             val = list.objectAtIndex(pos);

             select(val, c);

             return;

         }

         //If value binding is present, lookup the value

         java.util.Enumeration numerador = list.objectEnumerator();

         while (numerador.hasMoreElements()) {

             Object o = numerador.nextElement();

             if (o instanceof NSKeyValueCodingAdditions) {

                 Object x = ((NSKeyValueCodingAdditions)o).valueForKeyPath(valueKey);

                 if (x != null && x.equals(val)) {

                     select(o, c);

                     return;

                 }

             }

         }

     }

 }