[英]Is it possible to retrieve the HostServices interface within Drombler FX?
[英]Is it somehow possible to have two master views and one detail view?
例如,如果我在左侧有一个主视图,在中间有一个主视图,每个主视图都显示了Java Beans / POJO,我可以使用共享的详细视图,以某种方式侦听每个视图的活动bean,然后在其中显示当前选择的一个视图。更多详情? 通过使用上下文库,一对一关系非常容易管理。
@ViewDocking(areaId ="left", position=1, displayName="Profiles", menuEntry = @WindowMenuEntry(path = "", position=0), accelerator="Shortcut+1")
public class ProfileListView extends BorderPane implements LocalContextProvider {
private final SimpleContextContent content = new SimpleContextContent();
private final SimpleContext context = new SimpleContext(content);
@FXML
private ListView<Profile> listview;
public ProfileListView() {
load();
// add some profiles
listview.getItems().add(new Profile("Profile1"));
listview.getItems().add(new Profile("Profile2"));
listview.getItems().add(new Profile("Profile3"));
// setup selection listener
listview.getSelectionModel().selectedItemProperty().addListener((value, oldProfile, newProfile) -> {
// set active profile and remove old one
content.remove(oldProfile);
content.add(newProfile);
});
// setup double click listener
configureClickListener();
}
private Profile getSelectedProfile() {
return listview.getSelectionModel().getSelectedItem();
}
private void configureClickListener() {
listview.setOnMouseClicked(event -> {
// check if it was a double click
if(event.getClickCount() == 2) {
System.out.println(getSelectedProfile());
// inject into editor pane
// calls the procedure to create a tab in the center area...
}
});
}
private void load() {
FXMLLoaders.loadRoot(this);
}
@Override
public Context getLocalContext() {
return context;
}
}
这是一个主视图,其中包含项的列表视图。 另一个将是相同的,与另一个选项卡停靠在右侧,并持有“ Action”类型的POJO。
详细视图在这里:
@ViewDocking(areaId = "right", displayName = "Properties", accelerator = "Shortcut+2", menuEntry = @WindowMenuEntry(path = "", position = 0), position = 1)
public class ProfilePropertiesView extends BorderPane implements LocalContextProvider, ActiveContextSensitive {
private Context activeContext;
private SimpleContextContent content = new SimpleContextContent();
private SimpleContext context = new SimpleContext(content);
private Profile profile;
private IWindowService service = new NullWindowService();
@FXML
private PropertySheet propertysheet;
public ProfilePropertiesView() {
load();
// retrieve framework service, TODO: use tracker
BundleContext ctx = FrameworkUtil.getBundle(getClass()).getBundleContext();
service = ctx.getService(ctx.getServiceReference(IWindowService.class));
// initialize callback
service.addCallback(title -> {
System.out.println("callback called " + title);
// update the property sheet ui by re-creating the items list
// updateUI();
// we can safely return null
return null;
});
// configure editor factory so the user is able to use a combobox
propertysheet.setPropertyEditorFactory(new CustomPropertyEditorFactory(service));
}
private void load() {
FXMLLoaders.loadRoot(this);
}
@Override
public Context getLocalContext() {
return context;
}
private void contextChanged() {
// find profile information
Profile found = activeContext.find(Profile.class);
// if the found profile is null, ignore it
if (found != null) {
// reset if profile is valid
if (profile != null) {
reset();
}
// create reference and register
profile = found;
register();
}
}
private void register() {
// retrieve observablelist of bean properties if some profile is selected
if(profile != null) {
ObservableList<Item> items = createDetailedList(profile);
propertysheet.getItems().setAll(items);
}
}
private void updateUI() {
// clear property elements and re-create them
reset();
// re-create items
ObservableList<Item> items = createDetailedList(profile);
propertysheet.getItems().addAll(items);
}
private ObservableList<Item> createDetailedList(Object bean) {
ObservableList<Item> list = FXCollections.observableArrayList();
try {
BeanInfo beanInfo = Introspector.getBeanInfo(bean.getClass(), Object.class);
Arrays.stream(beanInfo.getPropertyDescriptors()).map(pd -> new DetailedBeanProperty(bean, pd)).forEach(list::add);
} catch (IntrospectionException e) {
e.printStackTrace();
}
return list;
}
private void reset() {
propertysheet.getItems().clear();
}
@Override
public void setActiveContext(Context activeContext) {
this.activeContext = activeContext;
this.activeContext.addContextListener(Profile.class, event -> contextChanged());
// trigger change
contextChanged();
}
}
当前的ProfilePropertiesView只是配置为显示所选配置文件的属性。 我希望它能够在UI中显示最后选择的POJO的当前信息。 这意味着,如果用户从ListView中选择了一个配置文件,则该配置文件应显示在属性视图中。 如果他从表格(显示在中间)中选择了一个动作,则应该显示该动作的属性。
我是否只需要为Action.class POJO注册一个新的ContextListener,然后调用一个方法来填充PropertiesView? 我不确定这是否是正确的解决方案...
是的,只需为您要观察的每种POJO类型向activeContext添加另一个ContextListener 。
还要注意,在视图的构造函数中,最好使用ServiceTracker而不是通过BundleContext查找服务,因为该服务可能尚不可用,具体取决于捆绑包的加载顺序。
您可以在此处找到使用ServiceTracker的示例: https : //stackoverflow.com/a/35974498/506855
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