我的问题几乎是相同的,因为这一个: ListEditor with polymorphic types 托马斯有一个很好的答案,但它是不够的我。GWT ListEditor与多态类型 - 无法更新
我想显示可能不同的对象列表,因此每个编辑器可以以不同的方式显示。 它几乎工作,除了我找不到问题:不可能获得当前值并保存它。 (我认为setValue方法必须被自动调用,但我有打电话给我自己)
下面是一些代码:
ShapeListEditor:
public class ShapeListEditor extends VerticalLayoutContainer implements IsEditor<ListEditor<ShapeProxy, ShapeEditorWrapper>> {
public class ESource extends EditorSource<ShapeEditorWrapper> {
@Override
public ShapeEditorWrapper create(int index) {
ShapeEditorWrapper subEditor = new ShapeEditorWrapper(index);
subEditor.setLayoutData(new VerticalLayoutData(1, -1, new Margins(20, 20, 40, 20)));
insert(subEditor, index);
return subEditor;
}
@Override
public void dispose(ShapeEditorWrapper subEditor) {
remove(subEditor);
}
@Override
public void setIndex(ShapeEditorWrapper editor, int index) {
insert(editor, index);
}
}
private ListEditor<ShapeProxy, ShapeEditorWrapper> editor = ListEditor.of(new ESource());
@Override
public ListEditor<ShapeProxy, ShapeEditorWrapper> asEditor() {
return editor;
}
}
ShapeEditorWrapper:
public class ShapeEditorWrapper extends Composite implements ValueAwareEditor<ShapeProxy> {
private SimplePanel panel = new SimplePanel();
@Path("")
ShapeEditor ShapeEditor;
public ShapeEditorWrapper(int index) {
super();
initWidget(panel);
}
@Override
public void setValue(ShapeProxy value) {
if (ShapeEditor == null) {
if (value == null) {
} else if (value.getShapeType() == ShapeTypeEnum.SQUARE) {
ShapeEditor = new ShapeSquareEditor();
ShapeEditor.setValue(value);
panel.setWidget(ShapeEditor);
} else if (value.getShapeType() == ShapeTypeEnum.TRIANGLE) {
ShapeEditor = new ShapeTriangleEditor();
panel.setWidget(ShapeEditor);
}
}
}
}
ShapeEditor:
public class ShapeEditor extends VerticalLayoutContainer implements ValueAwareEditor<ShapeProxy> {
public ShapeEditor() {
super();
}
@Override
public void setValue(ShapeProxy value) {
}
@Override
public void setDelegate(EditorDelegate<ShapeProxy> delegate) {
// TODO Auto-generated method stub
}
@Override
public void flush() {
// TODO Auto-generated method stub
}
@Override
public void onPropertyChange(String... paths) {
// TODO Auto-generated method stub
}
}
ShapeTriangleEditor和ShapeSquareEditor具有相同的属性,但我不想拥有相同的显示。这些类覆盖setValue(),创建和显示字段,这些字段以良好的值出现。但是,如果我更改了值,则不会检测到任何修改。
谁能告诉我我错过了什么?
在此先感谢