Java Scheduler类代码示例

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
void focusInputField(final FormItem focusItem) {

        Scheduler.get().scheduleDeferred( new Scheduler.ScheduledCommand() {

            @Override
            public void execute() {
                // Reset the search field for next time
                focusItem.focusInItem();
            }

        });
        
        // DeferredCommand.addCommand(new Command() {
        //     public void execute() {
        //         // Reset the search field for next time
        //         focusItem.focusInItem();
        //     }
        // });
        
    }
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
void focusInputField(final FormItem focusItem) {
    Scheduler.get().scheduleDeferred( new Scheduler.ScheduledCommand() {

        @Override
        public void execute() {
            // Reset the search field for next time
            focusItem.focusInItem();
        }

    });
    
    // DeferredCommand.addCommand(new Command() {
    //     public void execute() {
    //         // Reset the search field for next time
    //         focusItem.focusInItem();
    //     }
    // });
    
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
public void openNew() {
	setText(MESSAGES.dialogNewGroup());
	iGrOldName = null;
	iGrName.setText(String.valueOf((char)('A' + getGroups().size())));
	iGrType.setSelectedIndex(0);
	iGrAssign.setVisible(true);
	iGrDelete.setVisible(false);
	iGrUpdate.setVisible(false);
	Scheduler.get().scheduleDeferred(new ScheduledCommand() {
		@Override
		public void execute() {
			iGrName.setFocus(true);
			iGrName.selectAll();
		}
	});
	center();
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
public SessionDatesSelector(AcademicSessionProvider session) {
	iAcademicSession = session;
	
	iPanel = new UniTimeWidget<DatesPanel>(new DatesPanel());
	
	initWidget(iPanel);
	
	iAcademicSession.addAcademicSessionChangeHandler(new AcademicSessionChangeHandler() {
		@Override
		public void onAcademicSessionChange(AcademicSessionChangeEvent event) {
			if (event.isChanged()) init(event.getNewAcademicSessionId());
		}
	});
	
	Scheduler.get().scheduleDeferred(new ScheduledCommand() {
		@Override
		public void execute() {
			init(iAcademicSession.getAcademicSessionId());
		}
	});
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
public void authenticate() {
	if (!CONSTANTS.allowUserLogin()) {
		if (isAllowLookup())
			doLookup();
		else
			ToolBox.open(GWT.getHostPageBaseURL() + "login.do?target=" + URL.encodeQueryString(Window.Location.getHref()));
		return;
	}
	AriaStatus.getInstance().setText(ARIA.authenticationDialogOpened());
	iError.setVisible(false);
	iDialog.center();
	Scheduler.get().scheduleDeferred(new ScheduledCommand() {
		@Override
		public void execute() {
			iUserName.selectAll();
			iUserName.setFocus(true);
		}
	});
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
public void onModuleLoad() {

        // Create Exception alert
		GWT.setUncaughtExceptionHandler(new
	      GWT.UncaughtExceptionHandler() {
	      public void onUncaughtException(Throwable e) {
	      	Throwable unwrapped = unwrap(e);
	      	LOG.log(Level.SEVERE, "Ex caught!", e);
	    }
		});
		
		Scheduler.get().scheduleDeferred(new ScheduledCommand() {  
      public void execute() {  
        onModuleLoad2();  
      }  
    });
		
	}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
@Override
protected void onAttach() {
    super.onAttach();

    /*
     * When this window gets reattached, set the tabstop to the previous
     * state.
     */
    setTabStopEnabled(doTabStop);

    // Fix for #14413. Any pseudo elements inside these elements are not
    // visible on initial render unless we shake the DOM.
    if (BrowserInfo.get().isIE8()) {
        closeBox.getStyle().setDisplay(Style.Display.NONE);
        Scheduler.get().scheduleFinally(new Command() {
            @Override
            public void execute() {
                closeBox.getStyle().clearDisplay();
            }
        });
    }
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
@Override
protected void applySelectionCommand(final Scheduler.ScheduledCommand command) {
    if (!doubleClickMode || doubleClickHandling) {
    super.applySelectionCommand(command);
    } else {
        Scheduler.get().scheduleFixedDelay(new Scheduler.RepeatingCommand() {

            private long scheduledTimestamp = System.currentTimeMillis();

            @Override
            public boolean execute() {
                if (!doubleClickHandling && lastDoubleClickHandled < scheduledTimestamp) {
                    command.execute();
                }

                return false;
            }
        }, 250);
    }
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
@Override
protected void onPreviewNativeEvent(Event.NativePreviewEvent event) {
    super.onPreviewNativeEvent(event);

    NativeEvent nativeEvent = event.getNativeEvent();
    Element target = Element.as(nativeEvent.getEventTarget());

    if (Event.ONCLICK == event.getTypeInt()) {
        final Widget hoveredButton = WidgetUtil.findWidget(target, null);
        if (getElement().isOrHasChild(target)) {
            Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() {
                @Override
                public void execute() {
                    hide();

                    if (BrowserInfo.get().isIE9()) {
                        if (hoveredButton instanceof CubaButtonWidget) {
                            hoveredButton.removeStyleName("ie9-hover");
                        }
                    }
                }
            });
        }
    }
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
@Override
public void render(RendererCellReference rendererCellReference, final ComponentConnector componentConnector,
                   final SimplePanel panel) {
    if (componentConnector != null) {

        // render chart widgets deferred so measurements are correct. Do not render
        // normal component widgets deferred as it causes some flicker when rerendering the grid
        if (componentConnector.getClass().getName().equals("com.vaadin.addon.charts.shared.ChartConnector")) {
            Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() {
                @Override
                public void execute() {
                    panel.setWidget(componentConnector.getWidget());
                }
            });
        } else {
            panel.setWidget(componentConnector.getWidget());
        }
    } else {
        panel.clear();
    }
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
@Override
public void onFocus(FocusEvent event) {
    super.onFocus(event);

    if (!this.focused) {
        this.focused = true;

        if (!isReadOnly() && isEnabled()) {
            if (mask != null && nullRepresentation != null && nullRepresentation.equals(super.getText())) {
                addStyleName("c-focus-move");

                Scheduler.get().scheduleDeferred(() -> {
                    if (!isReadOnly() && isEnabled() && focused) {
                        setSelectionRange(getPreviousPos(0), 0);
                    }

                    removeStyleName("c-focus-move");
                });
            }
        }
    }
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
/**
 * Populates the info box. Continuously reports which element has browser
 * focus, and reports timing information for the stage loading.
 *
 * @param timeline timeline to report
 */
private static void showInfo(Timeline timeline) {
  Element timeBox = Document.get().getElementById("timeline");
  timeline.dump(timeBox);

  Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
    private final Element activeBox = Document.get().getElementById("active");

    @Override
    public boolean execute() {
      Element e = getActiveElement();
      String text = (e != null ? e.getTagName() + " id:" + e.getId() : "none");
      activeBox.setInnerText(text);
      return true;
    }

    private native Element getActiveElement() /*-{
      return $doc.activeElement;
    }-*/;
  }, 1000);
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
/**
 * Shows the last stack element in the scroll panel
 */
private void scrollToLastStackElement() {
	//Make it into the deferred command because the element might be shown later,
	//such as if this method is called before the forum section is selected
	if( messageStack.size() > 0 ) {
		final MessageStackElement element = messageStack.get( messageStack.size() - 1 );
		Scheduler.get().scheduleDeferred( new ScheduledCommand(){
			@Override
			public void execute() {
				//Ensure that the top stack element is visible in the stack
				if( element.isAttached() ) {
					scrollPanel.ensureVisible( element );
				}
			}
		});
	}
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
@Override
public void onAfterComponentIsAdded() {
	//Re-add the panel size, here we have to account for the
	//browsers because they do not render the first view correctly
	//if the person comes directly to the forum page
	BrowserDetect detect = BrowserDetect.getBrowserDetect();
	if( isFirstTime && ( detect.isChrome() || detect.isSafari() || detect.isFirefox() ) ) {
		//We do the update in the deferred command because only this way 
		//the browser does it after the rendering of the view is complete
		Scheduler.get().scheduleDeferred( new ScheduledCommand(){
			@Override
			public void execute() {
				updateUIElements();
			}
		});
		isFirstTime = false;
	}
}
 

import com.google.gwt.core.client.Scheduler; //导入依赖的package包/类
private void onFirstLoadComplete() {
    WebPlotGroup plotGroup = _plot.getPlotGroup();
    plotGroup.computeMinMax();
    WebPlotGroup.fireReplotEvent(ReplotDetails.Reason.IMAGE_RELOADED, _plot);
    if (_pv != null && _pv.contains(_plot)) {
        if (_firstLoad) {
            _pv.reconfigure();
            Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() {
                public void execute() {
                    _pv.smartCenter();
                }
            });
            _firstLoad = false;
        } else {
            ImageWorkSpacePt pt = _pv.findCurrentCenterPoint();
            _pv.reconfigure();
            if (!AllPlots.getInstance().isWCSMatch())_pv.centerOnPoint(pt);
        }
    }
}