StackLayout to switch between Composites

For example, If your dialog is having 2 radio buttons and based on the radio button selection you wanted to change the composite area. So rather than disposing the composite every time and recreating based on the selection of a radio button, we can manage this through stacklayout.

As per eclipse doc,This Layout stacks all the controls one on top of the other and resizes all controls to have the same size and location. The control specified in topControl is visible and all other controls are not visible. Users must set the topControl value to flip between the visible items and then call layout() on the composite which has the StackLayout.

public static void main(String[] args) {

                Display display = new Display();

                Shell shell = new Shell(display);

                shell.setLayout(new GridLayout());

        

                final Composite parent = new Composite(shell, SWT.NONE);

                parent.setLayoutData(new GridData(GridData.FILL_BOTH));

                final StackLayout layout = new StackLayout();

                parent.setLayout(layout);

                final Button[] bArray = new Button[10];

                for (int i = 0; i < 10; i++) {

                        bArray[i] = new Button(parent, SWT.PUSH);

                        bArray[i].setText("Button "+i);

                }

                layout.topControl = bArray[0];

        

                Button b = new Button(shell, SWT.PUSH);

                b.setText("Show Next Button");

                final int[] index = new int[1];

                b.addListener(SWT.Selection, new Listener(){

                        public void handleEvent(Event e) {

                                index[0] = (index[0] + 1) % 10;

                                layout.topControl = bArray[index[0]];

                                parent.layout();

                        }

                });

        

                shell.open();

                while (shell != null && !shell.isDisposed()) {

                        if (!display.readAndDispatch())

                                display.sleep(); 

                }       

        }

http://git.eclipse.org/c/platform/eclipse.platform.swt.git/tree/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet249.java


This is something new learning for me!!

File lock identifier

http://lockhunter.com/

This will identify who is locking the file.

Hiding menu items in eclipse RCP

For my reference:

http://codeandme.blogspot.in/2011/09/hiding-ui-elements-in-rcp.html

For example If you wanted to hide eclipse main menu "Run", 

Eclipse: Adding a new console and writing messages to it

http://www.jevon.org/wiki/writing_to_a_console_in_eclipse

MessageConsole console = new MessageConsole("Node Console", null);
console.activate();
ConsolePlugin.getDefault().getConsoleManager().addConsoles(new IConsole[]{ console });
MessageConsoleStream stream = console.newMessageStream();
stream.println("Hello, world!");

This is how it looks..

Remove all .svn folders recursively

For my reference...

To remove all .svn folders from your project, we can run the following command from the root of the folder.

FOR /F "tokens=*" %G IN ('DIR /B /AD /S *.svn*') DO RMDIR /S /Q "%G"

References:
http://stackoverflow.com/questions/4889619/command-to-recursively-remove-all-svn-directories-on-windows
http://blog.falafel.com/recursively-delete-svn-directories-with-the-windows-command-line/

Linking external project to eclipse workspace without really moving the project content

If you wanted to access the external eclipse project resources without really adding them into eclipse workspace, below piece code will help to do that.


 privagte void linkProject(String projectPath) throws CoreException {

IProjectDescription description = ResourcesPlugin.getWorkspace().loadProjectDescription( new Path(projectPath + File.separator +".project"));

IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(description.getName()); 
project.create(description, IProject.FORCE, null);
 if (!project.isOpen()) {
   project.open(null);
   }

 }

Closing eclipse empty editor area

I have a use case, where I need to the close the eclipse empty editor area, so that editor area can be used by something else.

This can be achieved by implementing IPartListerner2 interface which is provided org.eclipse.ui.*

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.IEditorReference;

import org.eclipse.ui.IEditorSite;

import org.eclipse.ui.IPartListener2;

import org.eclipse.ui.IWorkbenchPage;

import org.eclipse.ui.IWorkbenchPartReference;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.editors.text.TextEditor;

public class AbstractMyEditor extends TextEditor implements IPartListener2 {

@Override

public void init(IEditorSite site, IEditorInput input) throws PartInitException {

site.getPage().addPartListener(this);

super.init(site, input);

}

@Override

public void partActivated(IWorkbenchPartReference partRef) {

}

@Override

public void partBroughtToTop(IWorkbenchPartReference partRef) {

}

@Override

public void partClosed(IWorkbenchPartReference partRef) {

IWorkbenchPage page = partRef.getPage();

if (page.isEditorAreaVisible()) {

IEditorReference[] editores = page.getEditorReferences();

if (editores.length <= 0) {

page.setEditorAreaVisible(false);

}

}

}

@Override

public void partDeactivated(IWorkbenchPartReference partRef) {

}

@Override

public void partOpened(IWorkbenchPartReference partRef) {

}

@Override

public void partHidden(IWorkbenchPartReference partRef) {

}

@Override

public void partVisible(IWorkbenchPartReference partRef) {

}

@Override

public void partInputChanged(IWorkbenchPartReference partRef) { }

}