Button painted twice
We have in a JSP two selectOneChoice and a button.
Values of the second selectOneChoice depends on the value of the first selectOneChoice.
The values of both selectOneChoice are loaded from a bean called Bean.
The first time the JSP is loaded, only the first selectOneChoice is rendered. Once the user select a value of the first selectOneChoice and press the button, two things happen:
1. The valueChangeListener method of the first selectOneChoice is executed. This method updates the values of the second selectOneChoice.
2. The action method of the button is executed. This method just set a boolean field of the bean called 'renderList2' to true and set the outcome to null. This will cause to navigate to the same JSP.
Because the field called 'renderList2' is true, the second selectOneChoice is rendered.
But the button is painted twice. Why?
We are developing with JDeveloper 10.1.3.4.
The JSP is the next one:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://xmlns.oracle.com/adf/faces" prefix="af"%>
<%@ taglib uri="http://xmlns.oracle.com/adf/faces/html" prefix="afh"%>
<f:view>
<afh:html>
<afh:head title="rendering">
<meta http-equiv="Content-Type"
content="text/html; charset=windows-1252"/>
</afh:head>
<afh:body>
<h:form>
<af:panelGroup>
<af:selectOneChoice id="category1" valuePassThru="true"
valueChangeListener="#{Bean.updateList2}"
unselectedLabel="-- select one --">
<af:forEach items="#{Bean.list1}" var="row">
<af:selectItem label="#{row.label}" value="#{row.value}"/>
</af:forEach>
</af:selectOneChoice>
</af:panelGroup>
<af:panelGroup rendered="#{Bean.renderList2}">
<af:selectOneChoice id="category2" valuePassThru="true"
unselectedLabel="-- select one --">
<af:forEach items="#{Bean.list2}" var="row">
<af:selectItem label="#{row.label}" value="#{row.value}"/>
</af:forEach>
</af:selectOneChoice>
</af:panelGroup>
<af:commandButton text="Next" action="#{Bean.next}"/>
</h:form>
</afh:body>
</afh:html>
</f:view>
The code of the bean is:
package com.ieci.pruebas;
import java.util.ArrayList;
import javax.faces.event.ValueChangeEvent;
import javax.faces.model.SelectItem;
public class Bean
private ArrayList list1 = null;
private ArrayList list2 = null;
private boolean renderList2 = false;
public void setList1(ArrayList list1)
this.list1 = list1;
public ArrayList getList1()
this.list1 = new ArrayList ();
this.list1.add(new SelectItem ("ONE", "ONE"));
this.list1.add(new SelectItem ("TWO", "TWO"));
return this.list1;
public void setList2(ArrayList list2)
this.list2 = list2;
public ArrayList getList2()
return list2;
public void updateList2(ValueChangeEvent valueChangeEvent)
String list1Value = (String) valueChangeEvent.getNewValue();
this.list2 = new ArrayList ();
if (list1Value.equals("ONE"))
this.list2.add(new SelectItem ("VALUE 1", "VALUE 1"));
this.list2.add(new SelectItem ("VALUE 2", "VALUE 2"));
else
this.list2.add(new SelectItem ("VALUE 3", "VALUE 3"));
this.list2.add(new SelectItem ("VALUE 4", "VALUE 4"));
public String next ()
String command = null;
renderList2 = true;
return command;
public void setRenderList2(boolean renderList2)
this.renderList2 = renderList2;
public boolean isRenderList2()
return renderList2;
Thanks
Yes, I logged a SR yesterday.
Yesterday I solved it defining a navigatorion rule to the same JSP. I don't know why it paints the button twice when the method return a null as outcome.
I haven't test what you suggest about adding an "id" property to all componentes. Is it a JSF requirement when using a foreach tag?
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Yesterday I solved it defining a navigatorion rule to the same JSP. I don't know why it paints the button twice when the method return a null as outcome.
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Here is an example that demonstrates my problem:
<s:Application
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xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
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>
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<![CDATA[
import mx.containers.Form;
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]]>
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at flash.display::DisplayObjectContainer/getChildIndex()
at mx.core::Container/getChildIndex()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core \Container.as:2833]
at mx.containers::Panel/getChildIndex()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\co ntainers\Panel.as:1174]
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I do not understand why I cannot re-add the radio button? If you comment out the code for the radio button (comment section #3.) you can re-add the panels easily. It is only happening when I have radio buttons being added to the form/panel.
Why is this happening and how do I fix it? Why is this only happening to radio buttons? I thought I had this fixed^ well, okay, but that's not the problem.
here, i removed list and replaced with Panel. same problem on the radio buttons.
<s:Application
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:containers="com.dougmccune.containers.*"
xmlns:mx="library://ns.adobe.com/flex/mx"
creationPolicy="all"
>
<fx:Script>
<![CDATA[
import mx.containers.Form;
import mx.containers.Panel;
import mx.controls.Label;
import mx.controls.NumericStepper;
import mx.controls.RadioButton;
private var theChar:String = "B";
protected function btnAdd_clickHandler(event:MouseEvent):void
var theForm:Form = new Form();
theForm.label = theChar;
//1. Label
var myLabel:Label = new Label();
myLabel.text = "My Label";
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theForm.addChild(myLabel);
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myNumStepper.name = "numPointHigh" + theChar;
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var thePanel:Panel = new Panel();
thePanel.width = 300;
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protected function btnClear_clickHandler(event:MouseEvent):void
var numChildren:Number = myContainer.numChildren;
for(var i:Number=numChildren - 1; i > -1; i--){
myContainer.removeChildAt(i);
]]>
</fx:Script>
<mx:VBox width="100%">
<mx:Panel id="myContainer" />
<mx:Button id="btnAdd" label="Add a panel" click="btnAdd_clickHandler(event)" color="black"/>
<mx:Button id="btnClear" label="Clear" click="btnClear_clickHandler(event)" color="black" />
</mx:VBox>
</s:Application>
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private static final Border PRESSEDBORDER = new SoftBevelBorder(
SoftBevelBorder.LOWERED);
private static final Border OVERBORDER = new SoftBevelBorder(
SoftBevelBorder.RAISED);
private BufferedImage closeImgB;
private BufferedImage closeImgI;
private JButton closeB;
private int overTabIndex = -1;
private int closeIndexStatus = INACTIVE;
private int maxIndexStatus = INACTIVE;
private boolean mousePressed = false;
private boolean isCloseButtonEnabled = true;
private JPopupMenu actionPopupMenu = null;
private JMenuItem closeItem = null;
private JMenuItem closeOthers = null;
private JMenuItem closeAll = null;
public VCTabPaneUI()
super();
closeImgB = new BufferedImage(BUTTONSIZE, BUTTONSIZE,
BufferedImage.TYPE_4BYTE_ABGR);
closeImgI = new BufferedImage(BUTTONSIZE, BUTTONSIZE,
BufferedImage.TYPE_4BYTE_ABGR);
closeB = new JButton("X");
closeB.setSize(BUTTONSIZE, BUTTONSIZE);
actionPopupMenu = new JPopupMenu();
closeItem = new JMenuItem(VCResource.getString("CLOSE"));
closeOthers = new JMenuItem(VCResource.getString("CLOSE_OTHERS"));
closeAll = new JMenuItem(VCResource.getString("CLOSE_ALL"));
actionPopupMenu.add(closeItem);
actionPopupMenu.add(closeOthers);
actionPopupMenu.add(closeAll);
closeItem.addActionListener(this);
closeOthers.addActionListener(this);
closeAll.addActionListener(this);
protected boolean isOneActionButtonEnabled()
return isCloseButtonEnabled;
public boolean isCloseEnabled()
return isCloseButtonEnabled;
public void setCloseIcon(boolean b)
isCloseButtonEnabled = b;
protected int calculateTabWidth(int tabPlacement, int tabIndex,
FontMetrics metrics)
int delta = 2;
if (!isOneActionButtonEnabled())
delta += 6;
else
if (isCloseButtonEnabled)
delta += BUTTONSIZE + WIDTHDELTA;
return super.calculateTabWidth(tabPlacement, tabIndex, metrics) + delta;
protected int calculateTabHeight(int tabPlacement, int tabIndex,
int fontHeight)
return super.calculateTabHeight(tabPlacement, tabIndex, fontHeight) + 5;
protected void layoutLabel(int tabPlacement, FontMetrics metrics,
int tabIndex, String title, Icon icon, Rectangle tabRect,
Rectangle iconRect, Rectangle textRect, boolean isSelected)
textRect.x = textRect.y = iconRect.x = iconRect.y = 0;
View v = getTextViewForTab(tabIndex);
if (v != null)
tabPane.putClientProperty("html", v);
SwingUtilities.layoutCompoundLabel((JComponent) tabPane, metrics,
title, icon, SwingUtilities.CENTER, SwingUtilities.LEFT,
SwingUtilities.CENTER, SwingUtilities.CENTER, tabRect,
iconRect, textRect, textIconGap);
tabPane.putClientProperty("html", null);
iconRect.x = tabRect.x + 8;
textRect.x = iconRect.x + iconRect.width + textIconGap;
protected MouseListener createMouseListener()
return new MyMouseHandler();
protected ScrollableTabButton createScrollableTabButton(int direction)
return new ScrollableTabButton(direction);
protected Rectangle newCloseRect(Rectangle rect)
int dx = rect.x + rect.width;
int dy = (rect.y + rect.height) / 2 - 6;
return new Rectangle(dx - BUTTONSIZE - WIDTHDELTA, dy, BUTTONSIZE,
BUTTONSIZE);
protected Rectangle newMaxRect(Rectangle rect)
int dx = rect.x + rect.width;
int dy = (rect.y + rect.height) / 2 - 6;
if (isCloseButtonEnabled)
dx -= BUTTONSIZE;
return new Rectangle(dx - BUTTONSIZE - WIDTHDELTA, dy, BUTTONSIZE,
BUTTONSIZE);
protected void updateOverTab(int x, int y)
if (overTabIndex != (overTabIndex = getTabAtLocation(x, y)))
tabScroller.tabPanel.repaint();
protected void updateCloseIcon(int x, int y)
if (overTabIndex != -1)
int newCloseIndexStatus = INACTIVE;
Rectangle closeRect = newCloseRect(rects[overTabIndex]);
if (closeRect.contains(x, y))
newCloseIndexStatus = mousePressed ? PRESSED : OVER;
if (closeIndexStatus != (closeIndexStatus = newCloseIndexStatus))
tabScroller.tabPanel.repaint();
// protected void updateMaxIcon(int x, int y)
// if (overTabIndex != -1)
// int newMaxIndexStatus = INACTIVE;
// Rectangle maxRect = newMaxRect(rects[overTabIndex]);
// if (maxRect.contains(x, y))
// newMaxIndexStatus = mousePressed ? PRESSED : OVER;
// if (maxIndexStatus != (maxIndexStatus = newMaxIndexStatus))
// tabScroller.tabPanel.repaint();
private void setTabIcons(int x, int y)
// if the mouse isPressed
if (!mousePressed)
updateOverTab(x, y);
if (isCloseButtonEnabled)
updateCloseIcon(x, y);
public static ComponentUI createUI(JComponent c)
return new VCTabPaneUI();
* Invoked by <code>installUI</code> to create a layout manager object to
* manage the <code>JTabbedPane</code>.
* @return a layout manager object
* @see TabbedPaneLayout
* @see javax.swing.JTabbedPane#getTabLayoutPolicy
protected LayoutManager createLayoutManager()
return new TabbedPaneScrollLayout();
* In an attempt to preserve backward compatibility for programs which have
* extended BasicTabbedPaneUI to do their own layout, the UI uses the
* installed layoutManager (and not tabLayoutPolicy) to determine if
* scrollTabLayout is enabled.
* Creates and installs any required subcomponents for the JTabbedPane.
* Invoked by installUI.
* @since 1.4
protected void installComponents()
if (tabScroller == null)
tabScroller = new ScrollableTabSupport(tabPane.getTabPlacement());
tabPane.add(tabScroller.viewport);
tabPane.add(tabScroller.scrollForwardButton);
tabPane.add(tabScroller.scrollBackwardButton);
* Removes any installed subcomponents from the JTabbedPane. Invoked by
* uninstallUI.
* @since 1.4
protected void uninstallComponents()
tabPane.remove(tabScroller.viewport);
tabPane.remove(tabScroller.scrollForwardButton);
tabPane.remove(tabScroller.scrollBackwardButton);
tabScroller = null;
protected void installListeners()
if ((propertyChangeListener = createPropertyChangeListener()) != null)
tabPane.addPropertyChangeListener(propertyChangeListener);
if ((tabChangeListener = createChangeListener()) != null)
tabPane.addChangeListener(tabChangeListener);
if ((mouseListener = createMouseListener()) != null)
tabScroller.tabPanel.addMouseListener(mouseListener);
if ((focusListener = createFocusListener()) != null)
tabPane.addFocusListener(focusListener);
// PENDING(api) : See comment for ContainerHandler
if ((containerListener = new ContainerHandler()) != null)
tabPane.addContainerListener(containerListener);
if (tabPane.getTabCount() > 0)
htmlViews = createHTMLVector();
if ((motionListener = new MyMouseMotionListener()) != null)
tabScroller.tabPanel.addMouseMotionListener(motionListener);
protected void uninstallListeners()
if (mouseListener != null)
tabScroller.tabPanel.removeMouseListener(mouseListener);
mouseListener = null;
if (motionListener != null)
tabScroller.tabPanel.removeMouseMotionListener(motionListener);
motionListener = null;
if (focusListener != null)
tabPane.removeFocusListener(focusListener);
focusListener = null;
// PENDING(api): See comment for ContainerHandler
if (containerListener != null)
tabPane.removeContainerListener(containerListener);
containerListener = null;
if (htmlViews != null)
htmlViews.removeAllElements();
htmlViews = null;
if (tabChangeListener != null)
tabPane.removeChangeListener(tabChangeListener);
tabChangeListener = null;
if (propertyChangeListener != null)
tabPane.removePropertyChangeListener(propertyChangeListener);
propertyChangeListener = null;
protected ChangeListener createChangeListener()
return new TabSelectionHandler();
protected void installKeyboardActions()
InputMap km = getMyInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
SwingUtilities.replaceUIInputMap(tabPane,
JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, km);
km = getMyInputMap(JComponent.WHEN_FOCUSED);
SwingUtilities.replaceUIInputMap(tabPane, JComponent.WHEN_FOCUSED, km);
ActionMap am = createMyActionMap();
SwingUtilities.replaceUIActionMap(tabPane, am);
tabScroller.scrollForwardButton.setAction(am
.get("scrollTabsForwardAction"));
tabScroller.scrollBackwardButton.setAction(am
.get("scrollTabsBackwardAction"));
InputMap getMyInputMap(int condition)
if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
return (InputMap) UIManager.get("TabbedPane.ancestorInputMap");
} else if (condition == JComponent.WHEN_FOCUSED)
return (InputMap) UIManager.get("TabbedPane.focusInputMap");
return null;
ActionMap createMyActionMap()
ActionMap map = new ActionMapUIResource();
map.put("navigateNext", new NextAction());
map.put("navigatePrevious", new PreviousAction());
map.put("navigateRight", new RightAction());
map.put("navigateLeft", new LeftAction());
map.put("navigateUp", new UpAction());
map.put("navigateDown", new DownAction());
map.put("navigatePageUp", new PageUpAction());
map.put("navigatePageDown", new PageDownAction());
map.put("requestFocus", new RequestFocusAction());
map.put("requestFocusForVisibleComponent",
new RequestFocusForVisibleAction());
map.put("setSelectedIndex", new SetSelectedIndexAction());
map.put("scrollTabsForwardAction", new ScrollTabsForwardAction());
map.put("scrollTabsBackwardAction", new ScrollTabsBackwardAction());
return map;
protected void uninstallKeyboardActions()
SwingUtilities.replaceUIActionMap(tabPane, null);
SwingUtilities.replaceUIInputMap(tabPane,
JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null);
SwingUtilities
.replaceUIInputMap(tabPane, JComponent.WHEN_FOCUSED, null);
* Reloads the mnemonics. This should be invoked when a memonic changes,
* when the title of a mnemonic changes, or when tabs are added/removed.
private void updateMnemonics()
resetMnemonics();
for (int counter = tabPane.getTabCount() - 1; counter >= 0; counter--)
int mnemonic = tabPane.getMnemonicAt(counter);
if (mnemonic > 0)
addMnemonic(counter, mnemonic);
* Resets the mnemonics bindings to an empty state.
private void resetMnemonics()
if (mnemonicToIndexMap != null)
mnemonicToIndexMap.clear();
mnemonicInputMap.clear();
* Adds the specified mnemonic at the specified index.
private void addMnemonic(int index, int mnemonic)
if (mnemonicToIndexMap == null)
initMnemonics();
mnemonicInputMap.put(KeyStroke.getKeyStroke(mnemonic, Event.ALT_MASK),
"setSelectedIndex");
mnemonicToIndexMap.put(new Integer(mnemonic), new Integer(index));
* Installs the state needed for mnemonics.
private void initMnemonics()
mnemonicToIndexMap = new Hashtable();
mnemonicInputMap = new InputMapUIResource();
mnemonicInputMap.setParent(SwingUtilities.getUIInputMap(tabPane,
JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT));
SwingUtilities
.replaceUIInputMap(tabPane,
JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT,
mnemonicInputMap);
// UI Rendering
public void paint(Graphics g, JComponent c)
int tc = tabPane.getTabCount();
if (tabCount != tc)
tabCount = tc;
updateMnemonics();
int selectedIndex = tabPane.getSelectedIndex();
int tabPlacement = tabPane.getTabPlacement();
ensureCurrentLayout();
// Paint content border
paintContentBorder(g, tabPlacement, selectedIndex);
protected void paintTab(Graphics g, int tabPlacement, Rectangle[] rects,
int tabIndex, Rectangle iconRect, Rectangle textRect)
Rectangle tabRect = rects[tabIndex];
int selectedIndex = tabPane.getSelectedIndex();
boolean isSelected = selectedIndex == tabIndex;
boolean isOver = overTabIndex == tabIndex;
Graphics2D g2 = null;
Shape save = null;
boolean cropShape = false;
int cropx = 0;
int cropy = 0;
if (g instanceof Graphics2D)
g2 = (Graphics2D) g;
// Render visual for cropped tab edge...
Rectangle viewRect = tabScroller.viewport.getViewRect();
int cropline;
cropline = viewRect.x + viewRect.width;
if ((tabRect.x < cropline)
&& (tabRect.x + tabRect.width > cropline))
cropx = cropline - 1;
cropy = tabRect.y;
cropShape = true;
if (cropShape)
save = g2.getClip();
g2
.clipRect(tabRect.x, tabRect.y, tabRect.width,
tabRect.height);
paintTabBackground(g, tabPlacement, tabIndex, tabRect.x, tabRect.y,
tabRect.width, tabRect.height, isSelected);
paintTabBorder(g, tabPlacement, tabIndex, tabRect.x, tabRect.y,
tabRect.width, tabRect.height, isSelected);
String title = tabPane.getTitleAt(tabIndex);
Font font = tabPane.getFont();
FontMetrics metrics = g.getFontMetrics(font);
Icon icon = getIconForTab(tabIndex);
layoutLabel(tabPlacement, metrics, tabIndex, title, icon, tabRect,
iconRect, textRect, isSelected);
paintText(g, tabPlacement, font, metrics, tabIndex, title, textRect,
isSelected);
paintIcon(g, tabPlacement, tabIndex, icon, iconRect, isSelected);
paintFocusIndicator(g, tabPlacement, rects, tabIndex, iconRect,
textRect, isSelected);
if (cropShape)
paintCroppedTabEdge(g, tabPlacement, tabIndex, isSelected, cropx,
cropy);
g2.setClip(save);
} else if (isOver || isSelected)
int dx = tabRect.x + tabRect.width - BUTTONSIZE - WIDTHDELTA;
int dy = (tabRect.y + tabRect.height) / 2 - 6;
if (isCloseButtonEnabled)
paintCloseIcon(g2, dx, dy, isOver);
protected void paintCloseIcon(Graphics g, int dx, int dy, boolean isOver)
paintActionButton(g, dx, dy, closeIndexStatus, isOver, closeB,
closeImgB);
g.drawImage(closeImgI, dx, dy + 1, null);
protected void paintActionButton(Graphics g, int dx, int dy, int status,
boolean isOver, JButton button, BufferedImage image)
button.setBorder(null);
if (isOver)
switch (status)
case OVER:
button.setBorder(OVERBORDER);
break;
case PRESSED:
button.setBorder(PRESSEDBORDER);
break;
button.setBackground(tabScroller.tabPanel.getBackground());
button.paint(image.getGraphics());
g.drawImage(image, dx, dy, null);
* This method will create and return a polygon shape for the given tab
* rectangle which has been cropped at the specified cropline with a torn
* edge visual. e.g. A "File" tab which has cropped been cropped just after
* the "i": ------------- | ..... | | . | | ... . | | . . | | . . | | . . |
* The x, y arrays below define the pattern used to create a "torn" edge
* segment which is repeated to fill the edge of the tab. For tabs placed on
* TOP and BOTTOM, this righthand torn edge is created by line segments
* which are defined by coordinates obtained by subtracting xCropLen[i] from
* (tab.x + tab.width) and adding yCroplen[i] to (tab.y). For tabs placed on
* LEFT or RIGHT, the bottom torn edge is created by subtracting xCropLen[i]
* from (tab.y + tab.height) and adding yCropLen[i] to (tab.x).
private static final int CROP_SEGMENT = 12;
private void paintCroppedTabEdge(Graphics g, int tabPlacement,
int tabIndex, boolean isSelected, int x, int y)
g.setColor(shadow);
g.drawLine(x, y, x, y + rects[tabIndex].height);
private void ensureCurrentLayout()
if (!tabPane.isValid())
tabPane.validate();
* If tabPane doesn't have a peer yet, the validate() call will silently
* fail. We handle that by forcing a layout if tabPane is still invalid.
* See bug 4237677.
if (!tabPane.isValid())
TabbedPaneLayout layout = (TabbedPaneLayout) tabPane.getLayout();
layout.calculateLayoutInfo();
* Returns the bounds of the specified tab in the coordinate space of the
* JTabbedPane component. This is required because the tab rects are by
* default defined in the coordinate space of the component where they are
* rendered, which could be the JTabbedPane (for WRAP_TAB_LAYOUT) or a
* ScrollableTabPanel (SCROLL_TAB_LAYOUT). This method should be used
* whenever the tab rectangle must be relative to the JTabbedPane itself and
* the result should be placed in a designated Rectangle object (rather than
* instantiating and returning a new Rectangle each time). The tab index
* parameter must be a valid tabbed pane tab index (0 to tab count - 1,
* inclusive). The destination rectangle parameter must be a valid
* <code>Rectangle</code> instance. The handling of invalid parameters is
* unspecified.
* @param tabIndex
* the index of the tab
* @param dest
* the rectangle where the result should be placed
* @return the resulting rectangle
* @since 1.4
protected Rectangle getTabBounds(int tabIndex, Rectangle dest)
try{
dest.width = rects[tabIndex].width;
dest.height = rects[tabIndex].height;
Point vpp = tabScroller.viewport.getLocation();
Point viewp = tabScroller.viewport.getViewPosition();
dest.x = rects[tabIndex].x + vpp.x - viewp.x;
dest.y = rects[tabIndex].y + vpp.y - viewp.y;
}catch(Throwable a_th){}
return dest;
private int getTabAtLocation(int x, int y)
ensureCurrentLayout();
int tabCount = tabPane.getTabCount();
for (int i = 0; i < tabCount; i++)
if (rects.contains(x, y))
return i;
return -1;
public int getOverTabIndex()
return overTabIndex;
* Returns the index of the tab closest to the passed in location, note that
* the returned tab may not contain the location x,y.
private int getClosestTab(int x, int y)
int min = 0;
int tabCount = Math.min(rects.length, tabPane.getTabCount());
int max = tabCount;
int tabPlacement = tabPane.getTabPlacement();
boolean useX = (tabPlacement == TOP || tabPlacement == BOTTOM);
int want = (useX) ? x : y;
while (min != max)
int current = (max + min) / 2;
int minLoc;
int maxLoc;
if (useX)
minLoc = rects[current].x;
maxLoc = minLoc + rects[current].width;
} else
minLoc = rects[current].y;
maxLoc = minLoc + rects[current].height;
if (want < minLoc)
max = current;
if (min == max)
return Math.max(0, current - 1);
} else if (want >= maxLoc)
min = current;
if (max - min <= 1)
return Math.max(current + 1, tabCount - 1);
} else
return current;
return min;
* Returns a point which is translated from the specified point in the
* JTabbedPane's coordinate space to the coordinate space of the
* ScrollableTabPanel. This is used for SCROLL_TAB_LAYOUT ONLY.
private Point translatePointToTabPanel(int srcx, int srcy, Point dest)
Point vpp = tabScroller.viewport.getLocation();
Point viewp = tabScroller.viewport.getViewPosition();
dest.x = srcx + vpp.x + viewp.x;
dest.y = srcy + vpp.y + viewp.y;
return dest;
// BasicTabbedPaneUI methods
// Tab Navigation methods
// REMIND(ADC,7/29/98): This method should be made
// protected in the next release where
// API changes are allowed
boolean requestMyFocusForVisibleComponent()
Component visibleComponent = getVisibleComponent();
if (visibleComponent.isFocusTraversable())
visibleComponent.requestFocus();
return true;
} else if (visibleComponent instanceof JComponent)
if (((JComponent) visibleComponent).requestDefaultFocus())
return true;
return false;
private static class RightAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.navigateSelectedTab(EAST);
private static class LeftAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.navigateSelectedTab(WEST);
private static class UpAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.navigateSelectedTab(NORTH);
private static class DownAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.navigateSelectedTab(SOUTH);
private static class NextAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.navigateSelectedTab(NEXT);
private static class PreviousAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.navigateSelectedTab(PREVIOUS);
private static class PageUpAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
int tabPlacement = pane.getTabPlacement();
if (tabPlacement == TOP || tabPlacement == BOTTOM)
ui.navigateSelectedTab(WEST);
} else
ui.navigateSelectedTab(NORTH);
private static class PageDownAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
int tabPlacement = pane.getTabPlacement();
if (tabPlacement == TOP || tabPlacement == BOTTOM)
ui.navigateSelectedTab(EAST);
} else
ui.navigateSelectedTab(SOUTH);
private static class RequestFocusAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
pane.requestFocus();
private static class RequestFocusForVisibleAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.requestMyFocusForVisibleComponent();
* Selects a tab in the JTabbedPane based on the String of the action
* command. The tab selected is based on the first tab that has a mnemonic
* matching the first character of the action command.
private static class SetSelectedIndexAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = (JTabbedPane) e.getSource();
if (pane != null && (pane.getUI() instanceof VCTabPaneUI))
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
String command = e.getActionCommand();
if (command != null && command.length() > 0)
int mnemonic = (int) e.getActionCommand().charAt(0);
if (mnemonic >= 'a' && mnemonic <= 'z')
mnemonic -= ('a' - 'A');
Integer index = (Integer) ui.mnemonicToIndexMap
.get(new Integer(mnemonic));
if (index != null && pane.isEnabledAt(index.intValue()))
pane.setSelectedIndex(index.intValue());
private static class ScrollTabsForwardAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = null;
Object src = e.getSource();
if (src instanceof JTabbedPane)
pane = (JTabbedPane) src;
} else if (src instanceof ScrollableTabButton)
pane = (JTabbedPane) ((ScrollableTabButton) src).getParent();
} else
return; // shouldn't happen
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.tabScroller.scrollForward(pane.getTabPlacement());
private static class ScrollTabsBackwardAction extends AbstractAction
public void actionPerformed(ActionEvent e)
JTabbedPane pane = null;
Object src = e.getSource();
if (src instanceof JTabbedPane)
pane = (JTabbedPane) src;
} else if (src instanceof ScrollableTabButton)
pane = (JTabbedPane) ((ScrollableTabButton) src).getParent();
} else
return; // shouldn't happen
VCTabPaneUI ui = (VCTabPaneUI) pane.getUI();
ui.tabScroller.scrollBackward(pane.getTabPlacement());
* This inner class is marked "public" due to a compiler bug. This
* class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of BasicTabbedPaneUI.
private class TabbedPaneScrollLayout extends TabbedPaneLayout
protected int preferredTabAreaHeight(int tabPlacement, int width)
return calculateMaxTabHeight(tabPlacement);
protected int preferredTabAreaWidth(int tabPlacement, int height)
return calculateMaxTabWidth(tabPlacement);
public void layoutContainer(Container parent)
int tabPlacement = tabPane.getTabPlacement();
int tabCount = tabPane.getTabCount();
Insets insets = tabPane.getInsets();
int selectedIndex = tabPane.getSelectedIndex();
Component visibleComponent = getVisibleComponent();
calculateLayoutInfo();
if (selectedIndex < 0)
if (visibleComponent != null)
// The last tab was removed, so remove the component
setVisibleComponent(null);
} else
Component selectedComponent = tabPane
.getComponentAt(selectedIndex);
boolean shouldChangeFocus = false;
// In order to allow programs to use a single component
// as the display for multiple tabs, we will not change
// the visible compnent if the currently selected tab
// has a null component. This is a bit dicey, as we don't
// explicitly state we support this in the spec, but since
// programs are now depending on this, we're making it work.
if (selectedComponent != null)
if (selectedComponent != visibleComponent
&& visibleComponent != null)
if (SwingUtilities.findFocusOwner(visibleComponent) != null)
shouldChangeFocus = true;
setVisibleComponent(selectedComponent);
int tx, ty, tw, th; // tab area bounds
int cx, cy, cw, ch; // content area bounds
Insets contentInsets = getContentBorderInsets(tabPlacement);
Rectangle bounds = tabPane.getBounds();
int numChildren = tabPane.getComponentCount();
if (numChildren > 0)
// calculate tab area bounds
tw = bounds.width - insets.left - insets.right;
th = calculateTabAreaHeight(tabPlacement, runCount,
maxTabHeight);
tx = insets.left;
ty = -
Grey Screen - stuck in paint()???
Hi all,
I'm at the late stages of a java front-end project and I have just started having a recurring problem:
when the application starts up it appears to be getting stuck in the initial paint which leaves a frame with a plain grey background. When the application is resized or any other event which would cause a repaint it is ok but is getting stuck until then. Adding a repaint()/validate()/revalidate() etc after the show() call doesn't seem to solve the problem.
One thing that makes this more mystifying is that it only happens in 1 of 5 times the application is started and not at all on some PC's so I can't debug it.
Has anyone else seen this problem or got a solution?
Any help wpuld be greatly appreciated as I've run out of ideas
Cheers
PhilI got this problem when i was doing my project last year...
i tried alot of ways but i can't really recall which methods works..
1 way i will try is to paint all controls in the paint() method.
public void paint()
//do all the things
button.paint();
repaint();
try and see if it works.. because i can't really recall my solutions..
:�
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