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);
  }

• 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;
      }
  }