Localize RCP app

We already added intro page to RCP app. Now we localize RCP app.

1. Add language-specific product definitions to "build.gradle":

products {
  product platform: 'linux', arch: 'x86_32'
  product platform: 'linux', arch: 'x86_32', language: 'de'
  product platform: 'linux', arch: 'x86_64'
  product platform: 'linux', arch: 'x86_64', language: 'de'
  product platform: 'windows', arch: 'x86_32'
  product platform: 'windows', arch: 'x86_32', language: 'de'
  product platform: 'windows', arch: 'x86_64'
  product platform: 'windows', arch: 'x86_64', language: 'de'
  archiveProducts = true
}

Here we define 8 products: 4 are English, 4 are German.

2. Create file "tutorials/MyRcpApp/src/main/java/myrcpapp/Messages.java", insert code:

package myrcpapp;

import java.util.Locale;
import java.util.ResourceBundle;

public class Messages {

  private static ResourceBundle res = ResourceBundle.getBundle(Messages.class.getName(), Locale.getDefault());
  
  public static String getString(String key) {
    return res.getString(key);
  }  
}

2. Edit file "tutorials/MyRcpApp/src/main/java/myrcpapp/View.java", replace line btnShowDialog.setText("Show dialog"); with btnShowDialog.setText(Messages.getString("btnShowDialog_Label"));, so that the file looks like this:

package myrcpapp;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.ui.part.ViewPart;

public class View extends ViewPart {

  @Override
  public void createPartControl(final Composite parent) {
    parent.setLayout(new RowLayout());
    Button btnShowDialog = new Button(parent, SWT.PUSH);
    btnShowDialog.setText(Messages.getString("btnShowDialog_Label"));
    btnShowDialog.addSelectionListener(new SelectionAdapter() {
      @Override
      public void widgetSelected(SelectionEvent event) {
        myplugin.HelloWorld.showMessageDialog(parent.getShell());
      }
    });
  }

  @Override
  public void setFocus() {
  }
}

3. Edit file "tutorials/MyRcpApp/src/main/java/myrcpapp/ApplicationWorkbenchWindowAdvisor.java", replace line configurer.setTitle("Hello RCP"); with configurer.setTitle(Messages.getString("WindowTitle"));, so that the file looks like this:

package myrcpapp;

import org.eclipse.swt.graphics.Point;
import org.eclipse.ui.application.ActionBarAdvisor;
import org.eclipse.ui.application.IActionBarConfigurer;
import org.eclipse.ui.application.IWorkbenchWindowConfigurer;
import org.eclipse.ui.application.WorkbenchWindowAdvisor;

public class ApplicationWorkbenchWindowAdvisor extends WorkbenchWindowAdvisor {

  public ApplicationWorkbenchWindowAdvisor(IWorkbenchWindowConfigurer configurer) {
    super(configurer);
  }

  public ActionBarAdvisor createActionBarAdvisor(IActionBarConfigurer configurer) {
    return new ApplicationActionBarAdvisor(configurer);
  }
  
  public void preWindowOpen() {
    IWorkbenchWindowConfigurer configurer = getWindowConfigurer();
    configurer.setInitialSize(new Point(400, 300));
    configurer.setShowCoolBar(false);
    configurer.setShowStatusLine(false);
    configurer.setTitle(Messages.getString("WindowTitle"));
  }
}

3. Create folder "tutorials/MyRcpApp/src/main/resources/myrcpapp", create file "View.properties" in it, insert content:

btnShowDialog_Label=Show dialog

4. Create file "View_de.properties" in the same folder, insert content:

btnShowDialog_Label=Dialogfenster anzeigen

5. Edit file "tutorials/MyRcpApp/src/main/java/myrcpapp/ApplicationWorkbenchWindowAdvisor.java", replace content with: