StackedBarChart.java :  » GWT » ofcgwt » com » rednels » ofcgwt » client » model » elements » Java Open Source

/*
Copyright (C) 2009 Grant Slender

This file is part of OFCGWT.
http://code.google.com/p/ofcgwt/

OFCGWT is free software: you can redistribute it and/or modify
it under the terms of the Lesser GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.

OFCGWT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

See <http://www.gnu.org/licenses/lgpl-3.0.txt>.
 */
package com.rednels.ofcgwt.client.model.elements;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONNumber;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;
import com.rednels.ofcgwt.client.event.DataValueEvents;
import com.rednels.ofcgwt.client.model.JSONizable;

/**
 * OFC stacked bar chart
 */
public class StackedBarChart extends Element implements JSONizable {

  /**
   * OFC stack bar
   */
  public static class Stack implements JSONizable {

    private transient ArrayList<Object> values;

    /**
     * Creates a new stack.
     */
    public Stack() {
      values = new ArrayList<Object>();
    }

    /**
     * Creates a new stack with numbers.
     */
    public Stack(Number... numbers) {
      values = new ArrayList<Object>();
      this.addValues(numbers);
    }

    /**
     * Creates a new stack with values.
     */
    public Stack(StackValue... values) {
      this.values = new ArrayList<Object>();
      this.addStackValues(values);
    }

    /**
     * Adds the stack values.
     * 
     * @param values
     *            the values
     */
    public void addStackValues(List<StackValue> values) {
      this.values.addAll(values);
    }

    /**
     * Adds the stack values.
     * 
     * @param values
     *            the values
     */
    public void addStackValues(StackValue... values) {
      this.values.addAll(Arrays.asList(values));
    }

    /**
     * Adds the values.
     * 
     * @param numbers
     *            the numbers
     */
    public void addValues(List<Number> numbers) {
      this.values.addAll(numbers);
    }

    /**
     * Adds the values.
     * 
     * @param numbers
     *            the numbers
     */
    public void addValues(Number... numbers) {
      this.values.addAll(Arrays.asList(numbers));
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.rednels.ofcgwt.client.model.JSONizable.buildJSON()
     */
    public JSONValue buildJSON() {
      JSONArray ary = new JSONArray();
      if (values == null) return ary;
      int index = 0;
      for (Object o : values) {
        if (o instanceof Number) ary.set(index++, new JSONNumber(((Number) o).doubleValue()));
        if (o instanceof StackValue) ary.set(index++, ((StackValue) o).buildJSON());
      }
      return ary;
    }

    /**
     * Gets the values.
     * 
     * @return the values
     */
    public List<Object> getValues() {
      return this.values;
    }
  }

  /**
   * OFC stack bar chart values
   */
  public static class StackValue extends DataValueEvents implements JSONizable {

    private Number val;
    private String colour;

    /**
     * Creates a new stack value.
     * 
     * @param value
     *            the value
     */
    public StackValue(Number value) {
      this(value, null);
    }

    /**
     * Creates a new stack value.
     * 
     * @param value
     *            the value
     * @param colour
     *            the colour
     */
    public StackValue(Number value, String colour) {
      setValue(value);
      setColour(colour);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.rednels.ofcgwt.client.model.JSONizable.buildJSON()
     */
    public JSONValue buildJSON() {
      JSONObject json = new JSONObject();
      if (val != null) json.put("val", new JSONNumber(val.doubleValue()));
      if (colour != null) json.put("colour", new JSONString(colour));
      return json;
    }

    /**
     * Gets the colour.
     * 
     * @return the colour
     */
    public String getColour() {
      return colour;
    }

    /**
     * Gets the value.
     * 
     * @return the value
     */
    public Number getValue() {
      return val;
    }

    /**
     * Sets the colour in HTML hex format (#ffffff)
     * 
     * @param colour
     *            the new colour
     */
    public void setColour(String colour) {
      this.colour = colour;
    }

    /**
     * Sets the value.
     * 
     * @param val
     *            the new value
     */
    public void setValue(Number val) {
      this.val = val;
    }
  }

  /**
   * Creates a new stacked bar chart.
   */
  public StackedBarChart() {
    super("bar_stack");
  }

  /**
   * Adds the stack.
   * 
   * @param stacks
   *            the stacks
   */
  public void addStack(List<Stack> stacks) {
    values.addAll(stacks);
  }

  /**
   * Adds the stack.
   * 
   * @param stacks
   *            the stacks
   */
  public void addStack(Stack... stacks) {
    addStack(Arrays.asList(stacks));
  }
}