Eclipse Action

• Interface IAction

•  package org.eclipse.jface.action;
   import org.eclipse.core.commands.IHandlerAttributes;
   import org.eclipse.jface.resource.ImageDescriptor;
   import org.eclipse.jface.util.IPropertyChangeListener;
   import org.eclipse.swt.events.HelpListener;
   import org.eclipse.swt.widgets.Event;
   public interface IAction {
       public static int AS_UNSPECIFIED = 0x00;
       public static int AS_PUSH_BUTTON = 0x01;
       public static int AS_CHECK_BOX = 0x02;
       public static int AS_DROP_DOWN_MENU = 0x04;
       public static int AS_RADIO_BUTTON = 0x08;
       public static final String TEXT = "text";
       public static final String ENABLED = "enabled";
       public static final String IMAGE = "image";
       public static final String TOOL_TIP_TEXT = "toolTipText";
       public static final String DESCRIPTION = "description";
       public static final String CHECKED = "checked";
       public static final String RESULT = "result";
       public static final String HANDLED = IHandlerAttributes.ATTRIBUTE_HANDLED;
       public void addPropertyChangeListener(IPropertyChangeListener listener);
       public int getAccelerator();
       public String getActionDefinitionId();
       public String getDescription();
       public ImageDescriptor getDisabledImageDescriptor();
       public HelpListener getHelpListener();
       public ImageDescriptor getHoverImageDescriptor();
       public String getId();
       public ImageDescriptor getImageDescriptor();
       public IMenuCreator getMenuCreator();
       public int getStyle();
       public String getText();
       public String getToolTipText();
       public boolean isChecked();
       public boolean isEnabled();
       public boolean isHandled();
       public void removePropertyChangeListener(IPropertyChangeListener listener);
       public void run();
       public void runWithEvent(Event event);
       public void setActionDefinitionId(String id);
       public void setChecked(boolean checked);
       public void setDescription(String text);
       public void setDisabledImageDescriptor(ImageDescriptor newImage);
       public void setEnabled(boolean enabled);
       public void setHelpListener(HelpListener listener);
       public void setHoverImageDescriptor(ImageDescriptor newImage);
       public void setId(String id);
       public void setImageDescriptor(ImageDescriptor newImage);
       public void setMenuCreator(IMenuCreator creator);
       public void setText(String text);
       public void setToolTipText(String text);
       public void setAccelerator(int keycode);
   }

  IAction

• IPageService

•  public interface IPageService {
       public void addPageListener(IPageListener listener);
       public void addPerspectiveListener(IPerspectiveListener listener);
       public IWorkbenchPage getActivePage();
       public void removePageListener(IPageListener listener);
       public void removePerspectiveListener(IPerspectiveListener listener);
   }

• IRunnableContext

•  public interface IRunnableContext {
       public void run(boolean fork, boolean cancelable,
               IRunnableWithProgress runnable) throws InvocationTargetException,
               InterruptedException;
   }

• IServiceLocator

•  public interface IServiceLocator {
       public Object getService(Class api);
       public boolean hasService(Class api);
   }

• IShellProvider

•  public interface IShellProvider {
       Shell getShell();
   }

• IWorkbenchWindow:A workbench window is a top level window in a workbench. Visually, a workbench window has a menubar, a toolbar, a status bar, and a main area for displaying a single page consisting of a collection of views and editors. Each workbench window has a collection of 0 or more pages; the active page is the one that is being presented to the end user; at most one page is active in a window at a time. Same as Activity???

•  public interface IWorkbenchWindow extends IPageService,
                                             IRunnableContext,
                                             IServiceLocator,
                                             IShellProvider
   {
       public boolean close();
       public IWorkbenchPage getActivePage();
       public IWorkbenchPage[] getPages();
       public IPartService getPartService();
       public ISelectionService getSelectionService();
       public Shell getShell();
       public IWorkbench getWorkbench();
       public boolean isApplicationMenu(String menuId);
       public IWorkbenchPage openPage(String perspectiveId, IAdaptable input)
               throws WorkbenchException;
       public IWorkbenchPage openPage(IAdaptable input) throws WorkbenchException;
       public void run(boolean fork, boolean cancelable, IRunnableWithProgress runnable) throws InvocationTargetException, InterruptedException;
       public void setActivePage(IWorkbenchPage page);
       public IExtensionTracker getExtensionTracker();
   }

• Interface IActionDelegate

•  package org.eclipse.ui;
   import org.eclipse.jface.action.IAction;
   import org.eclipse.jface.viewers.ISelection;
  
   public interface IActionDelegate {
       public void run(IAction action);
       public void selectionChanged(IAction action, ISelection selection);
   }

• IWorkbenchWindowActionDelegate

•  package org.eclipse.ui;
  
   import org.eclipse.ui.IActionDelegate;
   import org.eclipse.ui.IWorkbenchWindow;
  
   public interface IWorkbenchWindowActionDelegate extends IActionDelegate {
       public void dispose();
       public void init(IWorkbenchWindow window);
   }

• HelloAction 

•  package com.dragon.contribution.hello.actions;
  
   import org.eclipse.jface.action.IAction;
   import org.eclipse.jface.viewers.ISelection;
   import org.eclipse.ui.IWorkbenchWindow;
   import org.eclipse.ui.IWorkbenchWindowActionDelegate;
   import org.eclipse.jface.dialogs.MessageDialog;
  
   public class HelloAction implements IWorkbenchWindowActionDelegate {
       private IWorkbenchWindow window;
  
       public HelloAction() {
       }
       public void run(IAction action) { //implementation when clicking menu or button in tools button
           MessageDialog.openInformation(
               window.getShell(),
               "Hello",
               "Hello, Eclipse world");
       }
       public void selectionChanged(IAction action, ISelection selection) {
       }
       public void dispose() {
       }
       public void init(IWorkbenchWindow window) { //called by Eclipse core and pass window object created by runtime kernel
           this.window = window;
       }
   }