import com.vaadin.shared.Connector; //导入依赖的package包/类
@Override
public void error(final ErrorEvent event) {

    final HawkbitErrorNotificationMessage message = buildNotification(getRootExceptionFrom(event));
    if (event instanceof ConnectorErrorEvent) {
        final Connector connector = ((ConnectorErrorEvent) event).getConnector();
        if (connector instanceof UI) {
            final UI uiInstance = (UI) connector;
            uiInstance.access(() -> message.show(uiInstance.getPage()));
            return;
        }
    }

    final Optional<Page> originError = getPageOriginError(event);
    if (originError.isPresent()) {
        message.show(originError.get());
        return;
    }

    HawkbitErrorNotificationMessage.show(message.getCaption(), message.getDescription(), Type.HUMANIZED_MESSAGE);
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
/**
 * Get component with given slot coordinate
 * @param x Slot's X coordinate
 * @param y Slot's Y coordinate
 * @param acceptInsideHit If true also other slots reserved by component are accepted
 * @return Component at slot, or null if component not found
 */
public Component getComponent(int x, int y, boolean acceptInsideHit) {
    for(Connector connector : getState().childOptions.keySet()) {
        GridStackChildOptions info = getState().childOptions.get(connector);
        if(acceptInsideHit) {
            if(x >= info.x && x < (info.x + info.width) && y >= info.y && y < (info.y + info.width)) {
                return (Component) connector;
            }
        } else {
            if (info.x == x && info.y == y) {
                return (Component) connector;
            }
        }
    }
    return null;
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
public void registerTimer(Connector connector) {
	if (connector != null) {
		if (connector instanceof TimerConnector) {
			VTimer newTimer = ((TimerConnector) connector).getWidget();
			if (timer != newTimer) {
				// unregister event handlers from current timer
				removeTimerHandlers();

				// set new timer and register event handlers
				timer = newTimer;
				addTimerHandlers();
			}
		}
	} else {
		// unregister event handlers from current timer
		removeTimerHandlers();

		timer = null;
	}
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
@Override
public void onStateChanged(StateChangeEvent event) {
	super.onStateChanged(event);

       //Duration duration = new Duration();
       clickEventHandler.handleEventHandlerRegistration();

       if(event.isInitialStateChange() || event.hasPropertyChanged("gridStackOptions")) {
           getWidget().setOptions(getState().gridStackOptions.width, getState().gridStackOptions.height,
                   getState().gridStackOptions);
       }

       //LOGGER.info("onStateChange so far " + duration.elapsedMillis() + "ms");

       if(getWidget().isInitialized() && event.hasPropertyChanged("childOptions")) {
           getWidget().batchUpdate();
           for(Connector connector : getChildConnectorsInCoordinateOrder()) {
               Widget widget = ((ComponentConnector)connector).getWidget();
               getWidget().updateChild(widget, getState().childOptions.get(connector));
           }
           getWidget().commit();
       }

       if(event.isInitialStateChange()) {
           initialRedraw();
       }

       //LOGGER.info("onStateChange took " + duration.elapsedMillis() + "ms");
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
/**
 * Short child connectors to order based on their coordinates. This helps to get wanted order defined by server
 * side.
 * @return Children in order of coordinates
 */
private List<Connector> getChildConnectorsInCoordinateOrder() {
    List<Connector> list = new ArrayList<Connector>();
    for(Connector connector : getState().childOptions.keySet()) {
        list.add(connector);
    }

    Collections.sort(list, childConnectorComparator);

    return list;
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
public GridStackMoveData(Connector child, int x, int y, int width, int height) {
    this.child = child;
    this.x = x;
    this.y = y;
    this.width = width;
    this.height = height;
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
/**
 * Finds the nearest component by traversing upwards in the hierarchy. If
 * connector is a Component, that Component is returned. Otherwise, looks
 * upwards in the hierarchy until it finds a {@link Component}.
 * 
 * @return A Component or null if no component was found
 */
public static Component findComponent(Connector connector) {
    if (connector instanceof Component) {
        return (Component) connector;
    }
    if (connector.getParent() != null) {
        return findComponent(connector.getParent());
    }

    return null;
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
/**
 * Returns a unmodifiable List of steps.
 *
 * @return List of steps
 */
public List<Step> getSteps() {
    List<Step> steps = new ArrayList<Step>();
    for (Connector sc : getState(false).steps) {
        steps.add(((StepComponent) sc).getState(false).step);
    }
    return Collections.unmodifiableList(steps);
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
@Override
public Iterator<Component> iterator() {
    List<Component> l = new ArrayList<Component>();
    for (Connector c : getState(false).steps) {
        l.add((Component) c);
    }
    return l.iterator();
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
protected List<StepWidget> getSteps() {
    List<StepWidget> steps = new ArrayList<StepWidget>();
    for (Connector sc : getState().steps) {
        steps.add(((StepConnector) sc).getWidget());
    }
    return steps;
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
protected Map<Step, StepWidget> getStepsMap() {
    Map<Step, StepWidget> steps = new HashMap<Step, StepWidget>();
    StepWidget stepWidget;
    for (Connector sc : getState().steps) {
        stepWidget = ((StepConnector) sc).getWidget();
        steps.put(((StepConnector) sc).getState().step, stepWidget);
    }
    return steps;
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
void handleVerticalScrollDelegateTargetChange() {
    Connector c = getState().verticalScrollDelegateTarget;
    unRegisterScrollDelegateHandlers();

    delegateScrollConnector = null;
    delegateScrollPanelTarget = null;
    if (c instanceof GridConnector) {
        delegateScrollConnector = (GridConnector) c;
        delegateScrollGridTarget = ((GridConnector) c).getWidget();
        registerScrollDelegateHandlers();
    }
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
@Override
public Iterator<Component> iterator() {
    List<Component> l = new ArrayList<Component>();
    for (Connector c : getState(false).subSteps) {
        l.add((Component) c);
    }
    return l.iterator();
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
@Contract("null -> null")
public static Widget connector2Widget(@Nullable Connector connector) {
  if (connector == null) {
    return null;
  }
  ComponentConnector componentConnector = (ComponentConnector)connector;
  return componentConnector.getWidget();
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
private void reset(@Nullable Connector connector) {
  if (connector != null) {
    com.vaadin.ui.Component component = (com.vaadin.ui.Component)connector;

    component.setParent(null);
  }
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
/**
 * Simulates a button click, notifying all server-side listeners.
 * 
 * No action is taken if the button is disabled.
 */
public void click() {
    if (isEnabled() && !isReadOnly()) {
        Connector targetView = getState().getTargetView();

        if (targetView != null) {
            getNavigationManager().navigateTo((Component) targetView);
        }

        fireClick();
    }
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
private Widget getTargetWidget() {
    Connector targetView = getState().getTargetView();
    if (targetView == null) {
        return null;
    }
    return ((AbstractComponentConnector) targetView).getWidget();
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
@Override
public void layoutClick(MouseEventDetails mouseEventDetails, Connector connector) {
    fireEvent(LayoutEvents.LayoutClickEvent.createEvent(GridStackLayout.this,
            mouseEventDetails, connector));
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
public Connector getPreviousComponent() {
    return previousComponent;
}
 

import com.vaadin.shared.Connector; //导入依赖的package包/类
public void setPreviousComponent(Connector previousComponent) {
    this.previousComponent = previousComponent;
}