利用ＧＥＦ制作表格系统(模型设计)
模型设计
１、建立通用模型，实现模型属性变化的跟踪
public class AbstractNode implements Cloneable,IPropertySource, Serializable {
…
????? private static final long serialVersionUID=10000100L;
?????
?????
????? private PropertyChangeSupport listeners = new PropertyChangeSupport(this);
????? public void addPropertyChangeListener(PropertyChangeListener listener){
???????????? listeners.addPropertyChangeListener(listener);
????? }
????? public void firePropertyChange(String propName,Object oldValue,Object newValue){
???????????? listeners.firePropertyChange(propName,oldValue,newValue);
????? }
????? public void removePropertyChange(PropertyChangeListener listener){
???????????? listeners.removePropertyChangeListener(listener);
????? }
…
}
?２、建立画布模型，增加子元素列表，实现子元素变化的追踪
public class DiagramNode extends AbstractNode{
????? public static final String P_CHILDREN ="_children";
????? protected List children=new ArrayList();?
????? public void setChildren(List children){
???????????? if(children !=? null){
??????????????????? this.children=children;
???????????? }else{
??????????????????? this.children=new ArrayList();
???????????? }
???????????? this.firePropertyChange(P_CHILDREN, null, children);
????? }
????? public List getChildren(){
???????????? return this.children;
????? }
????? public void addChild(Object child){
???????????? children.add(child);
???????????? firePropertyChange(P_CHILDREN, null, null);?????
????? }
????? public void addChild(int index,Object child){
???????????? if(index == -1){?????????????????
??????????????????? this.children.add(child);
???????????? }else{
??????????????????? this.children.add(index, child);
???????????? }
???????????? firePropertyChange(P_CHILDREN,null,null);
????? }????
????? public void removeChild(Object child){
???????????? children.remove(child);
???????????? firePropertyChange(P_CHILDREN,null,null);
????? }
????? public void moveChild(int index,AbstractNode child){
??? ???? children.remove(child);
??? ???? children.add(index, child);
??? ???? firePropertyChange(P_CHILDREN,null,null);
??? }
}
３、建立表格模型，增加子元素列表，实现对子元素变化的追踪；建立表格间距等属性的编辑和追踪管理
public class TableNode extends AbstractNode {
????? public static final String P_CHILDREN ="_children";
????? public static final String P_GRIDMANAGER="_gmanaer";
????? public static final String P_CHILDCHANGE="_change";
????? public static final String P_TABLEHSPACE="_hspace";
????? public static final String P_TABLEVSPACE="_vspace";
????? public static final String P_MARGINWIDTH="_hmargin";
????? public static final String P_MARGINHEIGHT="_vmargin";
????? public static final String P_TABLEBGCOLOR="_bgcolor";
????? public static final String P_OPERATE="_operate";
?????
????? protected List children=new ArrayList();?
????? private boolean border=true;
????? private GridLayout grid;
????? private int widthHint? = 20;
????? private int heightHint = 20;
????? private int rows=0;
????? private String operate="row";
????? private boolean childChange=false;
?????
????? private String bgColor="255:255:255";
????? public TableNode(){
???????????? super();
???????????? constraint.width=widthHint*4;
???????????? constraint.height=40;
????? }
????? public void setChildren(List children){
???????????? if(children !=? null){
??????????????????? this.children=children;
???????????? }else{
??????????????????? this.children=new ArrayList();
???????????? }
???????????? this.firePropertyChange(P_CHILDREN, null, children);
????? }
????? public List getChildren(){
???????????? return this.children;
????? }
????? public void addChild(Object child){
???????????? children.add(child);
???????????? firePropertyChange(P_CHILDREN, null, null);
?????
????? }
????? public void addChild(int index,Object child){
???????????? if(index == -1){
???????????????????
??????????????????? this.children.add(child);
???????????? }else{
??????????????????? this.children.add(index, child);
???????????? }
???????????? firePropertyChange(P_CHILDREN,null,null);
????? }
?????
????? public void removeChild(Object child){
???????????? children.remove(child);
???????????? firePropertyChange(P_CHILDREN,null,null);
????? }
????? public void moveChild(int index,AbstractNode child){
??? ???? children.remove(child);
??? ???? children.add(index, child);
??? ???? firePropertyChange(P_CHILDREN,null,null);
?? ?}
??????? public GridLayout getGrid() {
???????????? if(grid==null){
??????????????????? grid = new GridLayout();
??????????????????? grid.numColumns=4;
???????????? }
???????????? return grid;
????? }
????? public void setGrid(GridLayout grid) {
???????????? this.grid = grid;
???????????? this.firePropertyChange(P_GRIDMANAGER, null, grid);
????? }
????? public boolean isBorder() {
???????????? return border;
????? }
????? public void setBorder(boolean border) {
???????????? this.border = border;
????? }
????? public int getWidthHint() {
???????????? return widthHint;
????? }
????? public void setWidthHint(int widthHint) {
???????????? this.widthHint = widthHint;
????? }
????? public int getHeightHint() {
???????????? return heightHint;
????? }
????? public void setHeightHint(int heightHint) {
???????????? this.heightHint = heightHint;
????? }
????? public int getRows() {
???????????? return rows;
????? }
????? public void setRows(int rows) {
???????????? this.rows = rows;
????? }
????? public String getOperate() {
???????????? return operate;
????? }
????? public void setOperate(String operate) {
???????????? this.operate = operate;
????? }
????? public boolean isChildChange() {
???????????? return childChange;
????? }
????? public void setChildChange(boolean childChange) {
???????????? this.childChange = childChange;
???????????? this.firePropertyChange(P_CHILDCHANGE, null, null);
????? }
????? //表格属性
????? public int getTableHorizontalSpace(){
???????????? GridLayout grid=getGrid();
???????????? return grid.horizontalSpacing;
????? }
????? public void setTableHorizontalSpace(String ss){
???????????? GridLayout grid=getGrid();
???????????? int delta=Integer.parseInt(ss)-grid.horizontalSpacing;
???????????? if(delta != 0){
??????????????????? grid.horizontalSpacing=Integer.parseInt(ss);
??????????????????? this.firePropertyChange(P_GRIDMANAGER,null,"hspace:"+delta);
???????????? }
????? }
?????
????? public int getTableVerticalSpace(){
???????????? GridLayout grid=getGrid();
???????????? return grid.verticalSpacing;
????? }
????? public void setTableVerticalSpace(String ss){
???????????? GridLayout grid=getGrid();
???????????? int delta=Integer.parseInt(ss) - grid.verticalSpacing ;
???????????? if(delta != 0){
??????????????????? grid.verticalSpacing=Integer.parseInt(ss);
??????????????????? this.firePropertyChange(P_GRIDMANAGER,null,"vspace:"+delta);
????? ?????? }
????? }
?????
????? public int getTableHorizontalMargin(){
???????????? GridLayout grid=getGrid();
???????????? return grid.marginWidth;
????? }
????? public void setTableHorizontalMargin(String ss){
???????????? GridLayout grid=getGrid();
???????????? int delta=Integer.parseInt(ss) - grid.marginWidth;
???????????? if(delta !=0 ){
??????????????????? grid.marginWidth=Integer.parseInt(ss);
??????????????????? this.firePropertyChange(P_GRIDMANAGER,null, margin:"+delta);
???????????? }
????? }
?????
????? public int getTableVerticalMargin(){
???????????? GridLayout grid=getGrid();
???????????? return grid.marginHeight;
????? }
????? public void setTableVerticalMargin(String ss){
???????????? GridLayout grid=getGrid();
???????????? int delta=Integer.parseInt(ss) - grid.marginHeight;
???????????? if(delta != 0){
??????????????????? grid.marginHeight=Integer.parseInt(ss);
??????????????????? this.firePropertyChange(P_GRIDMANAGER, null, "vmargin:"+delta);
???????????? }
????? }
????? public Color getBgColor() {
???????????? if(this.bgColor ==null){
??????????????????? return new Color(null,255,255,255);
???????????? }else{
??????????????????? String[] rgb=bgColor.split(":");
??????????????????? return new Color(null,Integer.parseInt(rgb[0]),Integer.parseInt(rgb[1]),Integer.parseInt(rgb[2]));
???????????? }
????????????
????? }
????? public void setBgColor(Color bgColor) {
???????????? this.bgColor = bgColor.getRed()+":"+bgColor.getGreen()+":"+bgColor.getBlue();
???????????? this.firePropertyChange(P_TABLEBGCOLOR, null, null);
????? }
?????