Examples of java.awt.Component.requestFocus()

java.awt.Component.requestFocus()
Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window. This component must be displayable, focusable, visible and all of its ancestors (with the exception of the top-level Window) must be visible for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event. If this request is denied because this Component's top-level Window cannot become the focused Window, the request will be remembered and will be granted when the Window is later focused by the user.
This method cannot be used to set the focus owner to no Component at all. Use KeyboardFocusManager.clearGlobalFocusOwner() instead.
Because the focus behavior of this method is platform-dependent, developers are strongly encouraged to use requestFocusInWindow when possible.
Note: Not all focus transfers result from invoking this method. As such, a component may receive focus without this or any of the other {@code requestFocus} methods of {@code Component} being invoked. @see #requestFocusInWindow @see java.awt.event.FocusEvent @see #addFocusListener @see #isFocusable @see #isDisplayable @see KeyboardFocusManager#clearGlobalFocusOwner @since JDK1.0

            } catch (InterruptedException ex) {
            }
            root.setSize(new Dimension(rootSize.width, rootSize.height));
            // Request focus again even if dialog isn't supposed to have lost focus !
            if (KeyboardFocusManager.getCurrentKeyboardFocusManager().getActiveWindow() != root) {
              root.requestFocus();
            }
          } 
        });
    }
  }

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                        // In one case, a call to requestFocus() alone does not 
                        // bring the AWT dialog to the top. This happens if the 
                        // dialog is given a null parent frame. When opened, the dialog
                        // can be hidden by the SWT window even when it obtains focus.
                        // Calling toFront() solves the problem.
                        focusOwner.requestFocus();
                        awtDialog.toFront();
                    } catch (NullPointerException e) {
                        // Some dialogs (e.g. Windows page setup and print dialogs on JDK 1.5+) throw an NPE on
                        // requestFocus(). There's no way to check ahead of time, so just swallow the NPE here. 
                    }

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                    // Restore focus to any AWT component that lost focus due to 
                    // clearFocusOwner(). 
                    if (verboseFocusEvents) {
                        trace("restoring focus: " + savedOwner);
                    }
                    savedOwner.requestFocus();
                }
            });
        }
    }

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                }
                if (verboseFocusEvents) {
                    trace("Setting AWT focus on SWT traversal, forward=" + forward + ", component=" + component);
                }
                if (component != null) {
                    component.requestFocus();                
                }
            }
        });
    }

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                    Component component = frame.getMostRecentFocusOwner();
                    if (component != null) {
                        if (verboseFocusEvents) {
                            trace("Manually activating: " + frame + ", focus component=" + component);
                        }
                        component.requestFocus();
                    } else {
                        // Nothing can take focus, no point activating the frame. 
                        if (verboseFocusEvents) {
                            trace("Ignoring manual activation; no focusable components in " + frame);
                        }

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  }


  public void enterText(String componentName, String text) throws ComponentFinderException, TimeoutException {
    Component component = findComponent(componentName);
    component.requestFocus();
    typer.typeIntoComponent(component, text);
  }
    


  public void typeIntoTextComponent(TextComponent component, String text) {

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            defaultComponent = cycleRoot.getFocusTraversalPolicy().getDefaultComponent(this);
        }
        if (defaultComponent == null) {
            return false;
        }
        defaultComponent.requestFocus();
        return true;
    }


    public boolean isManagingFocus() {
        return false;

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     * Restores focus to the last subcomponent that had focus.
     */
    public void restoreSubcomponentFocus() {
        Component comp = getMostRecentFocusOwner();
        if (comp != null) {
            comp.requestFocus();
        } else {
            getContentPane().requestFocus();
        }
    }

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                        if (modifier == KeyboardModifier.shift)
                            nextComponent = policy.getComponentBefore(ancestor, focusOwner);
                        else
                            nextComponent = policy.getComponentAfter(ancestor, focusOwner);
                        if (nextComponent != focusOwner)
                            nextComponent.requestFocus();
                        else
                            kk.doAction(textField, VKeyboard.this, e.getID());
                        return;
                    }
                } catch (Exception e1)

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            this.nodeCommentShowedByEditor = selectedNode;
            this.noteEditor.addDirtyListener(this);
            
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    noteEditorComponent.requestFocus();
                }});
        }
    }


    private void showEmptyEditor() {

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