package org.exoplatform.faq.webui;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 * Represents an optgroup in a select element Holds a list of SelectItemOption that represent the options inside this optgroup
 * 
 * @author philippe
 * 
 */
public class SelectOptionGroup extends SelectItem {

  /**
   * The lis of SelectItemOption
   */
  private List<SelectOption> options_;

  public SelectOptionGroup(String label) {
    this(label, new ArrayList<SelectOption>(3));
  }

  public SelectOptionGroup(String label, List<SelectOption> list) {
    super(label);
    if (list == null)
      list = new ArrayList<SelectOption>(3);
    options_ = list;
  }

  public List<SelectOption> getOptions() {
    return options_;
  }

  public void setOptions(List<SelectOption> options) {
    this.options_ = options;
  }

  /**
   * Adds a SelectItemOption to the list
   * 
   * @param option
   */
  public void addOption(SelectOption option) {
    if (options_ == null)
      options_ = new ArrayList<SelectOption>(3);
    options_.add(option);
  }

  public void setSelectedValue(String[] values) {
    for (SelectOption option : options_) {
      option.setSelected(false);
      for (String value : values) {
        if (value.equals(option.getValue())) {
          option.setSelected(true);
          break;
        }
      }
    }
  }

  public void setValue(String value) {
    for (SelectOption option : options_) {
      if (option.getValue().equals(value))
        option.setSelected(true);
      else
        option.setSelected(false);
    }
  }

  public Collection<String> getSelectedValues() {
    List<String> selectedValues = new ArrayList<String>();
    for (int i = 0; i < options_.size(); i++) {
      SelectOption item = options_.get(i);
      if (item.isSelected())
        selectedValues.add(item.getValue());
    }
    return selectedValues;
  }

  public void reset() {
    if (options_ == null || options_.size() < 1)
      return;
    for (SelectOption option : options_) {
      option.setSelected(false);
    }
    options_.get(0).setSelected(true);
  }
}