Adding Action in Menu or Toolbar of Sample View programmatically

1. To add Action in Menu, we need to create Action as well as Menu for this View. To do that, we need to modify the SampleView.java file. Open the SampleView.java file and add the given code in "createPartControl" method:

public void createPartControl(Composite parent) { /** Creating Actions */ makeAction(); /** Adding Action on the Menu Bar */ fillMenuBar(); /** Adding Action on the ToolBar */ fillToolBar(); /** Activating Right Click Pop-up/context menu */ hookContextMenu(); }

2. Then create these four private method in the same java file and modify it with the give below code.

private void makeAction() { filterAction = new Action("Filter", SWT.TOGGLE) { public void run() { if (filterAction.isChecked()) { tViewer.addFilter(vFilter); } else { tViewer.removeFilter(vFilter); } } }; filterAction.setImageDescriptor(Activator.imageDescriptorFromPlugin(Activator.PLUGIN_ID, "icons/fields_co.gif")); sortAction = new Action("Sort", SWT.TOGGLE) { public void run() { if (sortAction.isChecked()) { tViewer.setSorter(new SampleViewerSorter ()); } else { tViewer.setSorter(null); } } }; sortAction.setImageDescriptor(Activator.imageDescriptorFromPlugin(Activator.PLUGIN_ID, "icons/alphab_sort_co.gif")); } private void fillMenuBar() { this.getViewSite().getActionBars().getMenuManager().add(filterAction); } private void fillToolBar() { this.getViewSite().getActionBars().getToolBarManager().add(filterAction); this.getViewSite().getActionBars().getToolBarManager().add(sortAction); } private void hookContextMenu() { // Create menu manager. MenuManager menuMgr = new MenuManager(); //Clear every time when right click is clicked. menuMgr.setRemoveAllWhenShown(true); //Fill the contextMenu with the menu for the corresponding selection. menuMgr.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager mgr) { mgr.add(sortAction); mgr.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS)); mgr.add(filterAction); } }); // Create menu. Menu menu = menuMgr.createContextMenu(tViewer.getControl()); tViewer.getControl().setMenu(menu); // Register menu for extension. getSite().registerContextMenu(menuMgr, tViewer); }

3. Add two icon image files named as : " fields_co.gif " and " alphab_sort_co.gif " in "icons" folder.

Project folder structure with icon files.

Add three data members in this SampleView class:

private Action filterAction;

private SampleFilter vFilter;

private Action sortAction;

4.  Create a new Java class named as "SampleFilter" in "samplecode.source.view" package folder with extends "org.eclipse.jface.viewers.ViewerFilter" super class.

Create new Java class dialog box

Click Finish.

5. Modify this java file with the following below code snippet:

package samplecode.source.view; import org.eclipse.core.resources.IFile; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; public class SampleFilter extends ViewerFilter { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { if (element instanceof IFile) { return false; } return true; } }

6. Create another java class named as "SampleViwerSorter" within "samplecode.source.view" package and extends "org.eclipse.jface.viewers.ViewerSorter" super class.

 Create new Java class dialog box for SampleViewSorter

Click Finish.

7. Modify this class with the following code snippet:

package samplecode.source.view; import java.text.Collator; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IResource; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerSorter; public class SampleViewerSorter extends ViewerSorter { public int category(Object element) { if (element instanceof IContainer) { return 0; } else { return 1; } } public int compare(Viewer viewer, Object e1, Object e2) { int cat1 = category(e1); int cat2 = category(e2); if (cat1 != cat2) { return cat1 - cat2; } if (e1 instanceof IResource && e2 instanceof IResource) { return Collator.getInstance().compare(((IResource) e2).getName(), ((IResource) e1).getName()); } return super.compare(viewer, e1, e2); } }

8. Modify the constructor of the SampleView class with below given code snippet:

public SampleView() { Activator .getDefault() .getLog() .log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, SWT.OK, "Excaption occured.", null)); vFilter = new SampleFilter(); }

9. Run the project and see the effect of the newly created two buttons in view toolbar.

Sample View

- Filter button filtering the all files.

- Sort button sorting all folders in alphabetical order.

Attachment: To Download this project click here.