MnemonicHelper refactoring

platform/lang-impl/src/com/intellij/ide/util/FileStructurePopup.java

@@ -242,7 +242,7 @@ public class FileStructurePopup implements Disposable {
   public void show() {
     //final long time = System.currentTimeMillis();
     JComponent panel = createCenterPanel();
-    new MnemonicHelper().register(panel);
+    MnemonicHelper.init(panel);
     boolean shouldSetWidth = DimensionService.getInstance().getSize(getDimensionServiceKey(), myProject) == null;
     myPopup = JBPopupFactory.getInstance().createComponentPopupBuilder(panel, null)
       .setTitle(myTitle)

platform/lang-impl/src/com/intellij/ide/util/gotoByName/ChooseByNameBase.java

@@ -897,7 +897,7 @@ public abstract class ChooseByNameBase {
     myTextPopup.setSize(bounds.getSize());
     myTextPopup.setLocation(bounds.getLocation());
 
-    new MnemonicHelper().register(myTextFieldPanel);
+    MnemonicHelper.init(myTextFieldPanel);
     if (myProject != null && !myProject.isDefault()) {
       DaemonCodeAnalyzer.getInstance(myProject).disableUpdateByTimer(myTextPopup);
     }

platform/platform-api/src/com/intellij/openapi/MnemonicHelper.java

@@ -143,4 +143,13 @@ public class MnemonicHelper extends ComponentTreeWatcher {
                       "alt pressed " + mnemonic;
     return CustomShortcutSet.fromString(shortcut);
   }
+
+  /**
+   * Initializes mnemonics support for the specified component and for its children if needed.
+   *
+   * @param component the root component of the hierarchy
+   */
+  public static void init(Component component) {
+    new MnemonicHelper().register(component);
+  }
 }

platform/platform-api/src/com/intellij/openapi/ui/DialogWrapper.java

@@ -1242,7 +1242,7 @@ public abstract class DialogWrapper {
       southSection.add(south, BorderLayout.SOUTH);
     }
 
-    new MnemonicHelper().register(root);
+    MnemonicHelper.init(root);
     if (!postponeValidation()) {
       startTrackingValidation();
     }

platform/platform-api/src/com/intellij/util/net/AuthenticationDialog.java

@@ -30,7 +30,7 @@ public class AuthenticationDialog extends DialogWrapper {
     super(component, true);
     setTitle(title);
 
-    new MnemonicHelper().register(getContentPane());
+    MnemonicHelper.init(getContentPane());
     panel = new AuthenticationPanel(description, login, password, rememberPassword);
 
     final Window window = getWindow();
@@ -45,7 +45,7 @@ public class AuthenticationDialog extends DialogWrapper {
     super(JOptionPane.getRootFrame(), true);
     setTitle(title);
 
-    new MnemonicHelper().register(getContentPane());
+    MnemonicHelper.init(getContentPane());
     panel = new AuthenticationPanel(description, login, password, rememberPassword);
 
     final Window window = getWindow();

platform/platform-impl/src/com/intellij/openapi/application/ImportOldConfigsPanel.java

@@ -57,7 +57,7 @@ public class ImportOldConfigsPanel extends JDialog {
   }
 
   private void init() {
-    new MnemonicHelper().register(getContentPane());
+    MnemonicHelper.init(getContentPane());
 
     ButtonGroup group = new ButtonGroup();
     group.add(myRbDoNotImport);

platform/platform-impl/src/com/intellij/openapi/wm/impl/FloatingDecorator.java

@@ -66,7 +66,7 @@ public final class FloatingDecorator extends JDialog {
 
   FloatingDecorator(final IdeFrameImpl owner,final WindowInfoImpl info,final InternalDecorator internalDecorator){
     super(owner,internalDecorator.getToolWindow().getId());
-    new MnemonicHelper().register(getContentPane());
+    MnemonicHelper.init(getContentPane());
     myInternalDecorator=internalDecorator;
 
     setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);

platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeFrameImpl.java

@@ -109,7 +109,7 @@ public class IdeFrameImpl extends JFrame implements IdeFrameEx, DataProvider {
     setFocusTraversalPolicy(layoutFocusTraversalPolicy);
 
     setupCloseAction();
-    new MnemonicHelper().register(this);
+    MnemonicHelper.init(this);
 
     myBalloonLayout = new BalloonLayoutImpl(myRootPane, new Insets(8, 8, 8, 8));
 

platform/platform-impl/src/com/intellij/openapi/wm/impl/welcomeScreen/FlatWelcomeFrame.java

@@ -113,7 +113,7 @@ public class FlatWelcomeFrame extends JFrame implements IdeFrame {
     myBalloonLayout = new BalloonLayoutImpl(rootPane, new JBInsets(8, 8, 8, 8));
 
     WelcomeFrame.setupCloseAction(this);
-    new MnemonicHelper().register(this);
+    MnemonicHelper.init(this);
     Disposer.register(ApplicationManager.getApplication(), new Disposable() {
       @Override
       public void dispose() {

platform/platform-impl/src/com/intellij/openapi/wm/impl/welcomeScreen/WelcomeFrame.java

@@ -80,7 +80,7 @@ public class WelcomeFrame extends JFrame implements IdeFrame {
 
     myScreen = screen;
     setupCloseAction(this);
-    new MnemonicHelper().register(this);
+    MnemonicHelper.init(this);
     myScreen.setupFrame(this);
     Disposer.register(ApplicationManager.getApplication(), new Disposable() {
       @Override

xml/dom-openapi/src/com/intellij/util/xml/ui/DomFileEditor.java

@@ -102,7 +102,7 @@ public class DomFileEditor<T extends BasicDomElementComponent> extends Perspecti
   @Override
   @NotNull
   protected JComponent createCustomComponent() {
-    new MnemonicHelper().register(getComponent());
+    MnemonicHelper.init(getComponent());
     myComponent = myComponentFactory.create();
     DomUIFactory.getDomUIFactory().setupErrorOutdatingUserActivityWatcher(this, getDomElement());
     DomManager.getDomManager(getProject()).addDomEventListener(new DomEventListener() {