/**

  * The MIT License (MIT)

  *

  * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * Permission is hereby granted, free of charge, to any person obtaining a copy

  * of this software and associated documentation files (the "Software"), to deal

  * in the Software without restriction, including without limitation the rights

  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

  * copies of the Software, and to permit persons to whom the Software is

  * furnished to do so, subject to the following conditions:

  *

  * The above copyright notice and this permission notice shall be included in

  * all copies or substantial portions of the Software.

  *

  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

  * THE SOFTWARE.

  */

 package dew.demo.histogram;

 import java.util.ArrayList;

 import java.util.List;

 import net.java.html.json.ComputedProperty;

 import net.java.html.json.Model;

 import net.java.html.json.Property;

 /** Model annotation generates class Data with 

  * one property for list of of numbers and read-only property

  * for ten of bars.

  */

 @Model(className = "Data", properties = {

     @Property(name = "numbers", type = String.class)

 })

 final class DataModel {

     @ComputedProperty static java.util.List<Bar> bars(String numbers) {

         List<Bar> arr = new ArrayList<Bar>(10);

         for (int i = 0; i < 10; i++) {

             arr.add(new Bar(i, 0));

         }

         String[] words = numbers == null ? new String[0] : numbers.split(" ");

         for (String word : words) {

             try {

                 double n = Double.parseDouble(word);

                 if (n > 99) {

                     n = 99;

                 } else if (n <= 0) {

                     n = 0;

                 }

                 Bar b = arr.get((int) (n / 10));

                 b.setValue(b.getValue() + 1);

             }catch (NumberFormatException ex) {

                 // ignore

             }

         }

         return arr;

     }

     @Model(className = "Bar", properties = {

         @Property(name = "index", type = int.class),

         @Property(name = "value", type = int.class)

     })

     static class BarModel {

         @ComputedProperty static String left(int index) {

             return (index * 50 + 20) + "px";

         }

         @ComputedProperty static String top(int value) {

             return (199 - value * 20) + "px";

         }

         @ComputedProperty static String height(int value) {

             return 20 * value + "px";

         }

     }

 }