Java Button类代码示例

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Adds a {@link KeyPressHandler} to the specified widget which calls {@link Button#click()} on <code>targetButton</code>
 * when the Enter key is pressed.
 * @param widget       widget to add the key handler to
 * @param targetButton target button to activate when the enter key is pressed
 */
public static void addEnterTarget( final HasKeyPressHandlers widget, final Button targetButton ) {
	widget.addKeyPressHandler( new KeyPressHandler() {
		@Override
		public void onKeyPress( final KeyPressEvent event ) {
			if ( event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER )
				targetButton.click();
		}
	} );
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
@Override
public void onModuleLoad() {
    RootPanel rootPanel = RootPanel.get("main");
    final Button button = new Button("Click me");
    rootPanel.add(button);
    
    ObservableEx.fromKeyboardEvent(button.getElement(), "keydown")
            .map(event -> event.ctrlKey)
            .take(5)
            .subscribe(v -> log("ctrlKey " + v));
    
    ObservableEx.fromMouseEvent(button.getElement(), "click")
            .map(event -> event.clientX)
            .take(5)
            .subscribe(v -> log("clientX " + v));        
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
private Button addButton(String operation, String name, Character accessKey, String width, ClickHandler clickHandler) {
	Button button = new AriaButton(name);
	button.addClickHandler(clickHandler);
	ToolBox.setWhiteSpace(button.getElement().getStyle(), "nowrap");
	if (accessKey != null)
		button.setAccessKey(accessKey);
	if (width != null)
		ToolBox.setMinWidth(button.getElement().getStyle(), width);
	iOperations.put(operation, iButtons.getWidgetCount());
	iClickHandlers.put(operation, clickHandler);
	iButtons.add(button);
	button.getElement().getStyle().setMarginLeft(4, Unit.PX);
	for (UniTimeHeaderPanel clone: iClones) {
		Button clonedButton = clone.addButton(operation, name, null, width, clickHandler);
		clonedButton.addKeyDownHandler(iKeyDownHandler);
	}
	button.addKeyDownHandler(iKeyDownHandler);
	return button;
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
public UniTimeMobileMenu() {
	iMenuButton = new Button(MESSAGES.mobileMenuSymbol());
	iMenuButton.addStyleName("unitime-MobileMenuButton");
	iMenuButton.addClickHandler(new ClickHandler() {
		@Override
		public void onClick(ClickEvent event) {
			if (iStackPanel.isVisible())
				hideMenu();
			else
				showMenu();
		}
	});
	iStackPanel = new MyStackPanel();
	iStackPanel.setVisible(false);
	initWidget(iMenuButton);
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Helper method called by constructor to initialize the edit it button
 * Only seen by app owner.
 */
private void initEdititButton() {
  final User currentUser = Ode.getInstance().getUser();
  if(app.getDeveloperId().equals(currentUser.getUserId())){
    editButton = new Button(MESSAGES.galleryEditText());
    editButton.addClickHandler(new ClickHandler() {
      // Open up source file if clicked the action button
      public void onClick(ClickEvent event) {
        editButton.setEnabled(false);
        Ode.getInstance().switchToGalleryAppView(app, GalleryPage.UPDATEAPP);
      }
    });
    editButton.addStyleName("app-action-button");
    appAction.add(editButton);
  }
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Helper method called by constructor to initialize the try it button
 */
private void initTryitButton() {
  actionButton = new Button(MESSAGES.galleryOpenText());
  actionButton.addClickHandler(new ClickHandler() {
    // Open up source file if clicked the action button
    public void onClick(ClickEvent event) {
      actionButton.setEnabled(false);
      /*
       *  open a popup window that will prompt to ask user to enter
       *  a new project name(if "new name" is not valid, user may need to
       *  enter again). After that, "loadSourceFil" and "appWasDownloaded"
       *  will be called.
       */
      new RemixedYoungAndroidProjectWizard(app, actionButton).center();
    }
  });
  actionButton.addStyleName("app-action-button");
  appAction.add(actionButton);
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Helper method called by constructor to initialize the cancel button
 */
private void initCancelButton() {
  cancelButton = new Button(MESSAGES.galleryCancelText());
  cancelButton.addClickHandler(new ClickHandler() {
    @Override
    public void onClick(ClickEvent event) {
      if (editStatus==NEWAPP) {
        Ode.getInstance().switchToProjectsView();
      }else if(editStatus==UPDATEAPP){
        Ode.getInstance().switchToGalleryAppView(app, GalleryPage.VIEWAPP);
      }
    }
  });
  cancelButton.addStyleName("app-action-button");
  appAction.add(cancelButton);
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Creates the GUI components for search tab.
 *
 * @param searchApp: the FlowPanel that search tab will reside.
 */
private void addGallerySearchTab(FlowPanel searchApp) {
  // Add search GUI
  FlowPanel searchPanel = new FlowPanel();
  final TextBox searchText = new TextBox();
  searchText.addStyleName("gallery-search-textarea");
  Button sb = new Button(MESSAGES.gallerySearchForAppsButton());
  searchPanel.add(searchText);
  searchPanel.add(sb);
  searchPanel.addStyleName("gallery-search-panel");
  searchApp.add(searchPanel);
  appSearchContent.addStyleName("gallery-search-results");
  searchApp.add(appSearchContent);
  searchApp.addStyleName("gallery-search");

  sb.addClickHandler(new ClickHandler() {
    //  @Override
    public void onClick(ClickEvent event) {
      gallery.FindApps(searchText.getText(), 0, NUMAPPSTOSHOW, 0, true);
    }
  });
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
private static void upgradeWarnDialog(String aMessage) {
  final DialogBox dialogBox = new DialogBox(false, true);
  dialogBox.setStylePrimaryName("ode-DialogBox");
  dialogBox.setText(MESSAGES.warningDialogTitle());
  dialogBox.setGlassEnabled(true);
  dialogBox.setAnimationEnabled(true);
  final HTML message = new HTML(aMessage);
  message.setStyleName("DialogBox-message");
  VerticalPanel vPanel = new VerticalPanel();
  Button okButton = new Button("OK");
  okButton.addClickListener(new ClickListener() {
      @Override
      public void onClick(Widget sender) {
        dialogBox.hide();
      }
    });
  vPanel.add(message);
  vPanel.add(okButton);
  dialogBox.setWidget(vPanel);
  dialogBox.center();
  dialogBox.show();
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Creates a new output panel for displaying internal messages.
 */
private OdeLog() {
  // Initialize UI
  Button clearButton = new Button(MESSAGES.clearButton());
  clearButton.addClickHandler(new ClickHandler() {
    @Override
    public void onClick(ClickEvent event) {
      clear();
    }
  });

  text = new HTML();
  text.setWidth("100%");

  VerticalPanel panel = new VerticalPanel();
  panel.add(clearButton);
  panel.add(text);
  panel.setSize("100%", "100%");
  panel.setCellHeight(text, "100%");
  panel.setCellWidth(text, "100%");

  initWidget(panel);
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
public HelloWorld() {
	HTML html = new HTML("Hello Word");
	refresh = new Button("refresh UI");
	refresh.addClickHandler(new ClickHandler() {
		@Override
		public void onClick(ClickEvent event) {
			GeneralComunicator.refreshUI();
		}
	});

	vPanel = new VerticalPanel();
	vPanel.add(html);
	vPanel.add(refresh);

	refresh.setStyleName("okm-Input");

	initWidget(vPanel);
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Logout popup
 */
public DebugConsolePopup() {
	// Establishes auto-close when click outside
	super(false, false);

	setText(Main.i18n("debug.console.label"));
	vPanel = new VerticalPanel();
	button = new Button(Main.i18n("button.close"), this);
	text = new HTML(Main.i18n("debug.enable.disable"));

	vPanel.add(new HTML("<br>"));
	vPanel.add(text);
	vPanel.add(Log.getLogger(DivLogger.class).getWidget());
	vPanel.add(new HTML("<br>"));
	vPanel.add(button);
	vPanel.add(new HTML("<br>"));

	vPanel.setCellHorizontalAlignment(button, VerticalPanel.ALIGN_CENTER);

	button.setStyleName("okm-YesButton");

	super.hide();
	Log.getLogger(DivLogger.class).getWidget().setVisible(true);
	setWidget(vPanel);
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
/**
 * Logout popup
 */
public LogoutPopup() {
	// Establishes auto-close when click outside
	super(false, true);

	vPanel = new VerticalPanel();
	text = new HTML(Main.i18n("logout.logout"));
	button = new Button(Main.i18n("button.close"), this);

	vPanel.setWidth("250px");
	vPanel.setHeight("100px");

	vPanel.add(new HTML("<br>"));
	vPanel.add(text);
	vPanel.add(new HTML("<br>"));
	vPanel.add(button);
	vPanel.add(new HTML("<br>"));

	vPanel.setCellHorizontalAlignment(text, VerticalPanel.ALIGN_CENTER);
	vPanel.setCellHorizontalAlignment(button, VerticalPanel.ALIGN_CENTER);

	button.setStyleName("okm-YesButton");

	super.hide();
	setWidget(vPanel);
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
@Override
public void onModuleLoad() {
  uploaderPanels.put("TextButtonAndProgressText", new TextButtonAndProgressText());
  uploaderPanels.put("ImageButtonAndProgressText", new ImageButtonAndProgressText());
  uploaderPanels.put("ImageButtonAndProgressBar", new ImageButtonAndProgressBar());
  uploaderPanels.put("MultiUploadWithProgressBar", new MultiUploadWithProgressBar());
  uploaderPanels.put("MultiUploadWithProgressBarAndDragAndDrop",
                     new MultiUploadWithProgressBarAndDragAndDrop());

  for (Map.Entry<String, UploaderSample> entry : uploaderPanels.entrySet()) {
    final UploaderSample sample = entry.getValue();
    final Widget uploaderPanel = sample.getUploaderPanel();
    final Button btnViewSource = new Button("View Source");
    btnViewSource.getElement().getStyle().setMarginTop(10, Style.Unit.PX);
    btnViewSource.addClickHandler(new ClickHandler() {
      @Override
      public void onClick(ClickEvent event) {
        sourceCodePopup.showSourceCode(sample.getUploaderCode());
      }
    });
    VerticalPanel panel = new VerticalPanel();
    panel.add(uploaderPanel);
    panel.add(btnViewSource);
    RootPanel.get(entry.getKey()).add(panel);
  }
}
 

import com.google.gwt.user.client.ui.Button; //导入依赖的package包/类
public SourceCodePopupPanel() {
  // PopupPanel's constructor takes 'auto-hide' as its boolean parameter.
  // If this is set, the panel closes itself automatically when the user
  // clicks outside of it.
  super(true);
  // Set the dialog box's caption.
  setText("Source Code");

  // Enable animation.
  setAnimationEnabled(true);

  // Enable glass background.
  setGlassEnabled(true);
  Button btnClose = new Button("Close");
  btnClose.addClickHandler(new ClickHandler() {
    @Override
    public void onClick(ClickEvent event) {
      hide();
    }
  });
  VerticalPanel panel = new VerticalPanel();
  panel.add(html);
  panel.add(btnClose);
  panel.setCellHorizontalAlignment(btnClose, HasHorizontalAlignment.ALIGN_RIGHT);
  setWidget(panel);
}