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package cn.ennwifi.webframe.ui.client.common;

import cn.ennwifi.webframe.ui.client.resource.SysResource;
import cn.mapway.ui.client.widget.common.TableEx;

import com.google.gwt.dom.client.Element;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.HasSelectionHandlers;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.HTMLTable.Cell;
import com.google.gwt.user.client.ui.HTMLTable.RowFormatter;
import com.ksyzt.gwt.client.event.HasMessageHandlers;
import com.ksyzt.gwt.client.event.MessageEvent;
import com.ksyzt.gwt.client.event.MessageHandler;


/**
 * 自定义表格.
 *
 * @author zhangjianshe
 */
public class NeTable extends TableEx implements HasMessageHandlers, HasSelectionHandlers {


    /**
     * The current row.
     */
    int currentRow = -1;

  /**
   * Sets the selection row.
   *
   * @param row the new selection row
   */
  public void setSelectionRow(int row) {
    cancelRowSelect();
    if (row > 0 && row < this.getRowCount()) {
      rf.setStyleName(row, SysResource.INSTANCE.getCss().rowSelect());
      currentRow = row;

    }
  }

  /**
   * 取消当前选择的行.
   */
  private void cancelRowSelect() {
    if (currentRow > 0) {
      rf.setStyleName(currentRow, getRowCss(currentRow));
      currentRow = -1;
    }
  }

    /**
     * Gets the select row.
     *
     * @return the select row
     */
    public int getSelectRow() {
    return currentRow;
  }


  /*
   * (non-Javadoc)
   * 
   * @see com.google.gwt.user.client.ui.FlexTable#removeAllRows()
   */
  @Override
  public void removeAllRows() {
    super.removeAllRows();
    currentRow = -1;
  }

  /*
   * (non-Javadoc)
   * 
   * @see
   * com.google.gwt.event.logical.shared.HasSelectionHandlers#addSelectionHandler(com.google.gwt.
   * event.logical.shared.SelectionHandler)
   */
  @Override
  public HandlerRegistration addSelectionHandler(SelectionHandler handler) {
    return addHandler(handler, SelectionEvent.getType());
  }

  /** The m click handler. */
  private ClickHandler mClickHandler = new ClickHandler() {

    @Override
    public void onClick(ClickEvent event) {
      Cell cell = NeTable.this.getCellForEvent(event);
      if (cell != null) {
        setSelectionRow(cell.getRowIndex());
        SelectionEvent.fire(NeTable.this, cell);
      }
    }
  };

    /**
     * The rf.
     */
    RowFormatter rf;

    /**
     * Instantiates a new ne table.
     */
    public NeTable() {
    Element ele = this.getElement();
    ele.setAttribute("cellSpacing", "0px");
    ele.setAttribute("cellPadding", "4px");
    this.addClickHandler(mClickHandler);
    rf = getRowFormatter();
  }

  /*
   * (non-Javadoc)
   * 
   * @see
   * com.ksyzt.gwt.client.event.HasMessageHandlers#addMessageHandler(com.ksyzt.gwt.client.event.
   * MessageHandler)
   */
  @Override
  public HandlerRegistration addMessageHandler(MessageHandler handler) {
    return addHandler(handler, MessageEvent.TYPE);
  }

    /**
     * 报告消息.
     *
     * @param msg the msg
     */
    public void message(String msg) {
    MessageEvent ev = new MessageEvent(MessageEvent.MESSAGE, msg);
    fireEvent(ev);
  }

  /**
   * Format.
   *
   * @param formatHeader the format header
   */
  public void format(boolean formatHeader) {
    int row = 0;
    if (formatHeader) {
      if (this.getRowCount() > 0) {
        rf.setStyleName(0, SysResource.INSTANCE.getCss().rowh());
        row++;
      }
    }

    for (int i = row; i < this.getRowCount(); i++) {
      String css = getRowCss(i);
      rf.setStyleName(i, css);
    }
  }

  /**
   * Gets the row css.
   *
   * @param row the row
   * @return the row css
   */
  private String getRowCss(int row) {
    String css =
        (row % 2 == 0) ? SysResource.INSTANCE.getCss().row1() : SysResource.INSTANCE.getCss()
            .row0();
    return css;
  }

}