1 package autotest.common.ui; 2 3 import com.google.gwt.event.logical.shared.CloseHandler; 4 import com.google.gwt.user.client.Command; 5 import com.google.gwt.user.client.Window; 6 import com.google.gwt.user.client.ui.MenuBar; 7 import com.google.gwt.user.client.ui.MenuItem; 8 import com.google.gwt.user.client.ui.PopupPanel; 9 10 11 12 public class ContextMenu { 13 private PopupPanel popup = new PopupPanel(true); 14 private AutoHideMenu menu = new AutoHideMenu(); 15 private boolean enabled = true; 16 17 private class CommandWrapper implements Command { 18 private Command command; 19 CommandWrapper(Command command)20 CommandWrapper(Command command) { 21 this.command = command; 22 } 23 execute()24 public void execute() { 25 popup.hide(); 26 command.execute(); 27 } 28 } 29 30 private class AutoHideMenu extends MenuBar { AutoHideMenu()31 public AutoHideMenu() { 32 super(true); 33 } 34 35 @Override addItem(String text, Command cmd)36 public MenuItem addItem(String text, Command cmd) { 37 return super.addItem(text, new CommandWrapper(cmd)); 38 } 39 setEnabled(boolean enabled)40 public void setEnabled(boolean enabled) { 41 for (MenuItem menuItem : getItems()) { 42 menuItem.setEnabled(enabled); 43 } 44 } 45 } 46 ContextMenu()47 public ContextMenu() { 48 menu.setAutoOpen(true); 49 setUseHandCursor(true); 50 popup.add(menu); 51 } 52 setUseHandCursor(boolean enabled)53 protected void setUseHandCursor(boolean enabled) { 54 if (enabled) 55 menu.addStyleName("menubar-hand-cursor"); 56 else 57 menu.removeStyleName("menubar-hand-cursor"); 58 } 59 addItem(String text, Command cmd)60 public void addItem(String text, Command cmd) { 61 menu.addItem(text, new CommandWrapper(cmd)); 62 } 63 addSubMenuItem(String text)64 public MenuBar addSubMenuItem(String text) { 65 MenuBar subMenu = new AutoHideMenu(); 66 menu.addItem(text, subMenu); 67 return subMenu; 68 } 69 showAt(int left, int top)70 public void showAt(int left, int top) { 71 popup.setPopupPosition(left, top); 72 popup.show(); 73 } 74 showAtWindow(int left, int top)75 public void showAtWindow(int left, int top) { 76 showAt(left + Window.getScrollLeft(), top + Window.getScrollTop()); 77 } 78 addCloseHandler(CloseHandler<PopupPanel> closeHandler)79 public void addCloseHandler(CloseHandler<PopupPanel> closeHandler) { 80 popup.addCloseHandler(closeHandler); 81 } 82 isEnabled()83 public boolean isEnabled() { 84 return enabled; 85 } 86 setEnabled(boolean enabled)87 public void setEnabled(boolean enabled) { 88 this.enabled = enabled; 89 menu.setEnabled(enabled); 90 setUseHandCursor(enabled); 91 } 92 } 93