public class DiagramEditor extends
GraphicalEditorWithFlyoutPalette
implements IPersistableEditor{
public void doSave(IProgressMonitor monitor) {
// TODO Auto-generated method stubperformSave(monitor, getEditorInput());
getCommandStack().markSaveLocation();
}@Override
public void doSaveAs() {
// TODO Auto-generated method stubShell shell = getSite().getShell();
final IEditorInput input = getEditorInput();SaveAsDialog dialog = new SaveAsDialog(shell);
IFile original = (input instanceof IFileEditorInput) ? ((IFileEditorInput) input).getFile(): null;
if (original != null){
dialog.setOriginalFile(original);}dialog.create();
int result = dialog.open(); 返回的是cancel或者ok
if (result == Window.CANCEL) {
return;
}IPath filePath = dialog.getResult();
IFile file = null;
if (filePath == null) {
return;
} else {
file = ResourcesPlugin.getWorkspace().getRoot().getFile(filePath);
}
if (input.exists()) {} else {
dialog.setErrorMessage(null);
dialog.setMessage(WARN_FILEEXIST, IMessageProvider.WARNING);
return;
}
if(file.exists()){}else{
try {
file.create(ResourceURLHelper.getNullInputStream(), true, null);
} catch (CoreException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
DiagramEditorInput newInput = new DiagramEditorInput(file.getLocation());performSave(getProgressMonitor(),newInput);
}@Override
public boolean isSaveAsAllowed() {
// TODO Auto-generated method stub
return true;
}
这个才是核心程序！重要！
private void performSave(IProgressMonitor monitor, IEditorInput input) {
if (diagram == null)
return;diagram.doSaveXML();
Document xmlTree = diagram.getDiagramDoc();if (xmlTree == null)
return;IFile file = ResourceUtil.getFile(getEditorInput());
OutputFormat format = OutputFormat.createPrettyPrint();
try {
FileWriter fileWriter;
fileWriter = new FileWriter((String) input.getAdapter(Path.class));XMLWriter writer = new XMLWriter(fileWriter, format);
writer.write(xmlTree);
writer.close();if (file != null) {
file.refreshLocal(IResource.DEPTH_ZERO,
new NullProgressMonitor());
}} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void commandStackChanged(EventObject event) {
// TODO Auto-generated method stubfirePropertyChange(IEditorPart.PROP_DIRTY);
super.commandStackChanged(event);
}@Override
public boolean isDirty() {
// TODO Auto-generated method stub
return getCommandStack().isDirty();
}
}
这里调用了diagram.doSaveXML(),所以接下来看diagrammodel的dosavexml（）方法
public class DiagramModel extends AbstractModel {
这些个都是diagram中包含的元素吗？
private List<Object> children = new ArrayList<Object>();
private List<Object> ports = new ArrayList<Object>();
private List<Object> texts = new ArrayList<Object>();
private List<Object> containers = new ArrayList<Object>();
private List<Object> portOps = new ArrayList<Object>();
private List<Object> refers = new ArrayList<Object>();
private ComponentInstanceModel component; 一直没搞懂这个componentInstanceModel和portInstanceModel是用来干嘛的。
private DiagramHeadingModel diagramHead; 这个model也没搞懂是用来干嘛的。
private String name;
private Document diagramDoc;
private Element rootElement,diagramElement,diagramExElement;
public DiagramModel() {
super();
name="";
initModel();
}
public void initModel(){
setName("Diagram");
setDiagramDoc(DocumentHelper.createDocument());
setRootElement(getDiagramDoc().addElement(ModelType.ELE_ROOT));
setDiagramElement(getRootElement().addElement(ModelType.ELE_DIAGRAM));
setDiagramExElement(getRootElement().addElement(ModelType.ELE_DIAGRAMEX));？？？？
}
@Override
public void doSaveXML() {
// TODO Auto-generated method stub
this.addDiagramAttribute(ModelType.ATR_NAME, name);
getDiagramHead().doSaveXML();
getComponent().doSaveXML();
for(int i=0;i<getPorts().size();i++){
((ElementModel)getPorts().get(i)).doSaveXML();
}
for(int i=0;i<getTexts().size();i++){
((ElementModel)getTexts().get(i)).doSaveXML();
}
}
protected void addDiagramAttribute(String name,String value){
if(getDiagramElement()==null){
return;
}
getDiagramElement().addAttribute(name, value);
}
protected void removeDiagramAttribute(String name){
if(getDiagramElement()==null){
return;
}
Attribute atr = getDiagramElement().attribute(name);
if(atr != null){
getDiagramElement().remove(atr);
}
}
}
1. getDiagramHead().doSaveXML();
public class DiagramHeadingModel extends ElementModel {
public DiagramHeadingModel() {
super(ConstantResourceFactory.LABEL_DIAGRAMHEAD_MODEL,
ConstantResourceFactory.ID_DIAGRAMHEAD_MODEL,
ConstantResourceFactory.SIZE_DIAGRAMHEAD);
// TODO Auto-generated constructor stub
definition="";
myCtype="";
myReturn="";
mySystem="";
diagramType="";
isRetShow=false;
isSysShow=false;
isRunsOnShow=false;
}
public void doSaveXML() {
// TODO Auto-generated method stub
super.doSaveXML();this.addXMLElementAttribute(ModelType.ATR_DIAGRAM,diagramType);
this.addXMLElementAttribute(ModelType.ATR_DEFINITION,definition);
if(isRunsOnShow()){
this.addXMLElementAttribute(ModelType.ATR_RUNSON,myCtype);
}
else{
this.removeXMLElementAttribute(ModelType.ATR_RUNSON);
}if(isRetShow()){
this.addXMLElementAttribute(ModelType.ATR_RETURN,myReturn); ？？？？？
}
else{
this.removeXMLElementAttribute(ModelType.ATR_RETURN);
}if(isSysShow()){
this.addXMLElementAttribute(ModelType.ATR_SYSTEM,mySystem);
}
else{
this.removeXMLElementAttribute(ModelType.ATR_SYSTEM);
}
}
}
因为ComponentInstanceModel继承自portElementModel
所以先看portElementModel的dosaveXML（）public abstract class PortElementModel extends ElementModel
{
public PortElementModel(String label, String modelID, Dimension size) {
super(label, modelID, size);
// TODO Auto-generated constructor stub
name="";
type="";
}
public void doSaveXML() {
// TODO Auto-generated method stub
super.doSaveXML();
this.addXMLElementAttribute(ModelType.ELE_NAME, name);
this.addXMLElementAttribute(ModelType.ELE_TYPE, type);
}
}
getComponentInstance.doSaveXML();
{
public ComponentInstanceModel() {
super(ConstantResourceFactory.LABEL_COMPONENTINSTANCE_MODEL,
ConstantResourceFactory.ID_COMPONENTINSTANCE_MODEL,
ConstantResourceFactory.SIZE_PORT_ELEMENT);
// TODO Auto-generated constructor stub
diagramType = "";
}
public void doSaveXML() {
// TODO Auto-generated method stub
super.doSaveXML();
for(int i=0;i<children.size();i++){
((ElementModel)children.get(i)).doSaveXML(); 子元素的dosavexml（）
}
if(tail!=null)
tail.doSaveXML();这里的tail是elementmodel，所以调用的是elementmodel.dosavexml（）
}
}
5.29 diagramEditor中的save,布布扣,bubuko.com