Examples of java.awt.Component.requestFocusInWindow()

java.awt.Component.requestFocusInWindow()
Requests that this Component get the input focus, if this Component's top-level ancestor is already 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.
This method returns a boolean value. If false is returned, the request is guaranteed to fail. If true is returned, the request will succeed unless it is vetoed, or an extraordinary event, such as disposal of the Component's peer, occurs before the request can be granted by the native windowing system. Again, while a return value of true indicates that the request is likely to succeed, developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event.
This method cannot be used to set the focus owner to no Component at all. Use KeyboardFocusManager.clearGlobalFocusOwner() instead.
The focus behavior of this method can be implemented uniformly across platforms, and thus developers are strongly encouraged to use this method over requestFocus when possible. Code which relies on requestFocus may exhibit different focus behavior on different platforms.
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. @return false if the focus change request is guaranteed tofail; true if it is likely to succeed @see #requestFocus @see java.awt.event.FocusEvent @see #addFocusListener @see #isFocusable @see #isDisplayable @see KeyboardFocusManager#clearGlobalFocusOwner @since 1.4

            
            // CraigM:06/08/2008 - Set the traversal reason to be done by the application
            ForteKeyboardFocusManager.setApplicationTraversal();
            
            if (c.isFocusable()) {
              c.requestFocusInWindow();
            }
            else {
              c.transferFocus();
            }
          }

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                      if (root != null) {
                          FocusTraversalPolicy policy = root.getFocusTraversalPolicy();
                          Component previousFocus = policy.getComponentBefore(root, component);
                          Component nextFocus = policy.getComponentAfter(root, previousFocus == null ? component : previousFocus);
                          if (nextFocus != null) {
                              nextFocus.requestFocusInWindow();
                          }
                      }
                  }
                }

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        while (!w.isFocused() && (System.currentTimeMillis() - startTime) < MAX_WAIT_TIME) {
            Thread.sleep(10);
        }
        SwingUtilities.invokeAndWait(new Runnable() {
            public void run() {
                final boolean result = comp.requestFocusInWindow();
                assertTrue("focus can be gained", result || comp.isFocusOwner());
            }
        });
        startTime = System.currentTimeMillis();
        while (!comp.isFocusOwner() && (System.currentTimeMillis() - startTime) < MAX_WAIT_TIME) {

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          public void ancestorMoved(final AncestorEvent event) {
          }
          public void ancestorRemoved(final AncestorEvent event) {
            final Component selectedComponent = Controller.getCurrentController().getMapViewManager().getSelectedComponent();
            if(selectedComponent != null)
              selectedComponent.requestFocusInWindow();
            quickEditor.removeAncestorListener(this);
          }
        });
      }
    }

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    tipPopup = new JPopupMenu();
    tipPopup.setLayout(new GridLayout(1, 1));
    tipPopup.add(tip);
    mouseInsideTooltipListener = new MouseInsideListener(tipPopup);
    tipPopup.show(nearComponent, 0, nearComponent.getHeight());
    focusOwner.requestFocusInWindow();
        exitTimer.start();
  }


  private void hideTipWindow() {
    insideComponent = null;

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          keyEv = new KeyEvent(editor.getEditorComponent(), KeyEvent.KEY_TYPED, e.getWhen(),
              e.getModifiers(), KeyEvent.VK_UNDEFINED, e.getKeyChar(), KeyEvent.KEY_LOCATION_UNKNOWN);
          retValue = SwingUtilities.processKeyBindings(keyEv);
        }
        else {
          editorComponent.requestFocusInWindow();
          retValue = true;
        }
      }
    }
    if (ks.getKeyCode() == KeyEvent.VK_SPACE) {

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          parentDockable.getDockingProperties().setActive(true);
      }
      c.removeFocusListener(this);
        }
    });                         
      c.requestFocusInWindow();
        }


        // if we're in a hidden tab, then bring the tab to the front
        if(parentComp.getParent() instanceof JTabbedPane) {
            JTabbedPane tabPane = (JTabbedPane)parentComp.getParent();

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                // on hiding the popup the focusmanager transfers 
                // focus back to the old permanentFocusOwner
                // before showing the popup, that is the picker
                // or the editor. So we have to force it back ... 
                hidePopup();
                comp.requestFocusInWindow();
                // this has no effect as focus changes are asynchronous
//                inHide = false;
            }
        }

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          case XEMBED_FOCUS_FIRST:
              SunToolkit.executeOnEventHandlerThread(embedded.target, new Runnable() {
                      public void run() {
                          Component comp = ((Container)embedded.target).getFocusTraversalPolicy().getFirstComponent((Container)embedded.target);
                          if (comp != null) {
                              comp.requestFocusInWindow();
                          }
                      }});
              break;
          case XEMBED_FOCUS_LAST:
              SunToolkit.executeOnEventHandlerThread(embedded.target, new Runnable() {

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          case XEMBED_FOCUS_LAST:
              SunToolkit.executeOnEventHandlerThread(embedded.target, new Runnable() {
                      public void run() {
                          Component comp = ((Container)embedded.target).getFocusTraversalPolicy().getLastComponent((Container)embedded.target);
                          if (comp != null) {
                              comp.requestFocusInWindow();
                          }
                      }});
              break;
        }
    }

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