JAVA 2 核心技术中的GBC类

import java.awt.*;


/**
 * This class simpliffies the use of the GridBagConstraints class
 * @version 1.01 2004-05-06
 * @author 海浪之心
 *
 */


public class GBC extends GridBagConstraints {
/**
* Constructs a GBC with a given gridx and gridy position and all other grid
* bag constraint values set to the default
* @param gridx the gridx position
* @param gridy the gridy position
*/

public GBC(int gridx, int gridy){
this.gridx = gridx;
this.gridy = gridy;
}

/**
* Constructs a GBC with given gridx, gridy, gridwidth, gridheight and all
* other grid bag constraint values set to the default.
* @param gridx the gridx position
* @param gridy the gridy position
* @param gridwidth the cell span in x-direction
* @param gridheight the cell span in y-direction
*/
public GBC(int gridx, int gridy, int gridwidth, int gridheight){
this.gridx = gridx;
this.gridy = gridy;
this.gridwidth = gridwidth;
this.gridheight = gridheight;
}

/**
* Sets the anchor.
* @param anchor the anchor value
* @return this object for further modification
*/
public GBC setAnchor(int anchor){
this.anchor = anchor;
return this;
}

/**
* Sets the fill direction.
* @param fill the fill direction
* @return this object for further modification
*/
public GBC setFill(int fill){
this.fill = fill;
return this;
}

/**
* Sets the cell weights.
* @param weightx the cell weigh in x-direction
* @param weighty the cell weight in y-direction
* @return this object for furthher modification
*/
public GBC setWeight(double weightx, double weighty){
this.weightx = weightx;
this.weighty = weighty;
return this;
}

/**
* Sets the insets of this cell.
* @param top the spacing to use on top
* @param left the spacing to use to the left 
* @param bottom the spacing to use on the bottom
* @param right the spacing to use to the right
* @return this object for further modification
*/
public GBC setInsets(int top, int left, int bottom, int right){
this.insets = new Insets(top, left, bottom, right);
return this;
}

public GBC setIpad(int ipadx, int ipady){
this.ipadx = ipadx;
this.ipady = ipady;
return this;
}
}