/**
* Paints the specified component according to the Look and Feel.
*
* <p>This method is not used by Synth Look and Feel. Painting is handled by the {@link
* #paint(SynthContext,Graphics)} method.
*
* @param g the {@code Graphics} object used for painting
* @param c the component being painted
* @see #paint(SynthContext,Graphics)
*/
@Override
public void paint(Graphics g, JComponent c) {
SynthContext context = getContext(c);
paint(context, g);
context.dispose();
}
static void updateStyle(JTextComponent comp, SynthContext context, String prefix) {
SynthStyle style = context.getStyle();
Color color = comp.getCaretColor();
if (color == null || color instanceof UIResource) {
comp.setCaretColor((Color) style.get(context, prefix + ".caretForeground"));
}
Color fg = comp.getForeground();
if (fg == null || fg instanceof UIResource) {
fg = style.getColorForState(context, ColorType.TEXT_FOREGROUND);
if (fg != null) {
comp.setForeground(fg);
}
}
Object ar = style.get(context, prefix + ".caretAspectRatio");
if (ar instanceof Number) {
comp.putClientProperty("caretAspectRatio", ar);
}
context.setComponentState(SELECTED | FOCUSED);
Color s = comp.getSelectionColor();
if (s == null || s instanceof UIResource) {
comp.setSelectionColor(style.getColor(context, ColorType.TEXT_BACKGROUND));
}
Color sfg = comp.getSelectedTextColor();
if (sfg == null || sfg instanceof UIResource) {
comp.setSelectedTextColor(style.getColor(context, ColorType.TEXT_FOREGROUND));
}
context.setComponentState(DISABLED);
Color dfg = comp.getDisabledTextColor();
if (dfg == null || dfg instanceof UIResource) {
comp.setDisabledTextColor(style.getColor(context, ColorType.TEXT_FOREGROUND));
}
Insets margin = comp.getMargin();
if (margin == null || margin instanceof UIResource) {
margin = (Insets) style.get(context, prefix + ".margin");
if (margin == null) {
// Some places assume margins are non-null.
margin = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
}
comp.setMargin(margin);
}
Caret caret = comp.getCaret();
if (caret instanceof UIResource) {
Object o = style.get(context, prefix + ".caretBlinkRate");
if (o != null && o instanceof Integer) {
Integer rate = (Integer) o;
caret.setBlinkRate(rate.intValue());
}
}
}
/** {@inheritDoc} */
@Override
public Dimension getMaximumSize(JComponent c) {
if (c.getComponentCount() > 0 && c.getLayout() != null) {
return null;
}
AbstractButton b = (AbstractButton) c;
SynthContext ss = getContext(c);
Dimension size =
ss.getStyle()
.getGraphicsUtils(ss)
.getMaximumSize(
ss,
ss.getStyle().getFont(ss),
b.getText(),
getSizingIcon(b),
b.getHorizontalAlignment(),
b.getVerticalAlignment(),
b.getHorizontalTextPosition(),
b.getVerticalTextPosition(),
b.getIconTextGap(),
b.getDisplayedMnemonicIndex());
return size;
}
private void updateStyle(JComponent c) {
SynthContext context = getContext(list, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
if (style != oldStyle) {
context.setComponentState(SELECTED);
Color sbg = list.getSelectionBackground();
if (sbg == null || sbg instanceof UIResource) {
list.setSelectionBackground(style.getColor(context, ColorType.TEXT_BACKGROUND));
}
Color sfg = list.getSelectionForeground();
if (sfg == null || sfg instanceof UIResource) {
list.setSelectionForeground(style.getColor(context, ColorType.TEXT_FOREGROUND));
}
useListColors = style.getBoolean(context, "List.rendererUseListColors", true);
useUIBorder = style.getBoolean(context, "List.rendererUseUIBorder", true);
int height = style.getInt(context, "List.cellHeight", -1);
if (height != -1) {
list.setFixedCellHeight(height);
}
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
context.dispose();
}
/**
* Notifies this UI delegate to repaint the specified component. This method paints the component
* background, then calls the {@link #paint(SynthContext,Graphics)} method.
*
* <p>In general, this method does not need to be overridden by subclasses. All Look and Feel
* rendering code should reside in the {@code paint} method.
*
* @param g the {@code Graphics} object used for painting
* @param c the component being painted
* @see #paint(SynthContext,Graphics)
*/
@Override
public void update(Graphics g, JComponent c) {
SynthContext context = getContext(c);
SynthLookAndFeel.update(context, g);
context.getPainter().paintScrollPaneBackground(context, g, 0, 0, c.getWidth(), c.getHeight());
paint(context, g);
}
public void update(Graphics g, JComponent c) {
SynthContext context = getContext(c);
SynthLookAndFeel.update(context, g);
paintBackground(context, g, c);
paint(context, g);
context.dispose();
}
/** Returns the amount to shift the text/icon when painting. */
private int getTextShiftOffset(SynthContext state) {
AbstractButton button = (AbstractButton) state.getComponent();
ButtonModel model = button.getModel();
if (model.isArmed() && model.isPressed() && button.getPressedIcon() == null) {
return state.getStyle().getInt(state, getPropertyPrefix() + "textShiftOffset", 0);
}
return 0;
}
@Override
public void installDefaults(SynthContext context) {
super.installDefaults(context);
if (!context.getRegion().isSubregion()) {
context
.getComponent()
.putClientProperty(SwingUtilities2.AA_TEXT_PROPERTY_KEY, GTKLookAndFeel.aaTextInfo);
}
}
private void updateStyle(JTable c) {
SynthContext context = getContext(c, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
if (style != oldStyle) {
context.setComponentState(ENABLED | SELECTED);
Color sbg = table.getSelectionBackground();
if (sbg == null || sbg instanceof UIResource) {
table.setSelectionBackground(style.getColor(context, ColorType.TEXT_BACKGROUND));
}
Color sfg = table.getSelectionForeground();
if (sfg == null || sfg instanceof UIResource) {
table.setSelectionForeground(style.getColor(context, ColorType.TEXT_FOREGROUND));
}
context.setComponentState(ENABLED);
Color gridColor = table.getGridColor();
if (gridColor == null || gridColor instanceof UIResource) {
gridColor = (Color) style.get(context, "Table.gridColor");
if (gridColor == null) {
gridColor = style.getColor(context, ColorType.FOREGROUND);
}
table.setGridColor(gridColor == null ? new ColorUIResource(Color.GRAY) : gridColor);
}
useTableColors = style.getBoolean(context, "Table.rendererUseTableColors", true);
useUIBorder = style.getBoolean(context, "Table.rendererUseUIBorder", true);
Object rowHeight = style.get(context, "Table.rowHeight");
if (rowHeight != null) {
LookAndFeel.installProperty(table, "rowHeight", rowHeight);
}
boolean showGrid = style.getBoolean(context, "Table.showGrid", true);
if (!showGrid) {
table.setShowGrid(false);
}
Dimension d = table.getIntercellSpacing();
// if (d == null || d instanceof UIResource) {
if (d != null) {
d = (Dimension) style.get(context, "Table.intercellSpacing");
}
alternateColor = (Color) style.get(context, "Table.alternateRowColor");
if (d != null) {
table.setIntercellSpacing(d);
}
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
context.dispose();
}
/** @inheritDoc */
@Override
protected void uninstallDefaults() {
super.uninstallDefaults();
SynthContext context = getContext(list, ENABLED);
style.uninstallDefaults(context);
context.dispose();
style = null;
}
private void paintDragDivider(Graphics g, int x, int y, int w, int h) {
SynthContext context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER);
context.setComponentState(((context.getComponentState() | MOUSE_OVER) ^ MOUSE_OVER) | PRESSED);
Shape oldClip = g.getClip();
g.clipRect(x, y, w, h);
context
.getPainter()
.paintSplitPaneDragDivider(context, g, x, y, w, h, splitPane.getOrientation());
g.setClip(oldClip);
context.dispose();
}
@Override
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
JComponent jc = (JComponent) c;
SynthContext context = getContext(jc);
SynthStyle style = context.getStyle();
if (style == null) {
assert false : "SynthBorder is being used outside after the " + " UI has been uninstalled";
return;
}
context.getPainter().paintViewportBorder(context, g, x, y, width, height);
}
/** {@inheritDoc} */
@Override
public int getBaseline(JComponent c, int width, int height) {
if (c == null) {
throw new NullPointerException("Component must be non-null");
}
if (width < 0 || height < 0) {
throw new IllegalArgumentException("Width and height must be >= 0");
}
AbstractButton b = (AbstractButton) c;
String text = b.getText();
if (text == null || "".equals(text)) {
return -1;
}
Insets i = b.getInsets();
Rectangle viewRect = new Rectangle();
Rectangle textRect = new Rectangle();
Rectangle iconRect = new Rectangle();
viewRect.x = i.left;
viewRect.y = i.top;
viewRect.width = width - (i.right + viewRect.x);
viewRect.height = height - (i.bottom + viewRect.y);
// layout the text and icon
SynthContext context = getContext(b);
FontMetrics fm = context.getComponent().getFontMetrics(context.getStyle().getFont(context));
context
.getStyle()
.getGraphicsUtils(context)
.layoutText(
context,
fm,
b.getText(),
b.getIcon(),
b.getHorizontalAlignment(),
b.getVerticalAlignment(),
b.getHorizontalTextPosition(),
b.getVerticalTextPosition(),
viewRect,
iconRect,
textRect,
b.getIconTextGap());
View view = (View) b.getClientProperty(BasicHTML.propertyKey);
int baseline;
if (view != null) {
baseline = BasicHTML.getHTMLBaseline(view, textRect.width, textRect.height);
if (baseline >= 0) {
baseline += textRect.y;
}
} else {
baseline = textRect.y + fm.getAscent();
}
return baseline;
}
/** Uninstalls the UI defaults. */
@Override
protected void uninstallDefaults() {
SynthContext context = getContext(splitPane, ENABLED);
style.uninstallDefaults(context);
context.dispose();
style = null;
context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER, ENABLED);
dividerStyle.uninstallDefaults(context);
context.dispose();
dividerStyle = null;
super.uninstallDefaults();
}
protected void uninstallDefaults() {
SynthContext context = getContext(getComponent(), ENABLED);
JComponent c = getComponent();
c.putClientProperty("caretAspectRatio", null);
style.uninstallDefaults(context);
context.dispose();
style = null;
Object clientProperty = c.getClientProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES);
if (clientProperty == localTrue) {
getComponent().putClientProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES, Boolean.FALSE);
}
super.uninstallDefaults();
}
private Insets getScrollBarInsets(SynthContext context, Insets insets) {
int troughBorder = getClassSpecificIntValue(context, "trough-border", 1);
insets.left = insets.right = insets.top = insets.bottom = troughBorder;
JComponent c = context.getComponent();
if (c.getParent() instanceof JScrollPane) {
// This scrollbar is part of a scrollpane; use only the
// "scrollbar-spacing" style property to determine the padding
// between the scrollbar and its parent scrollpane.
int spacing = getClassSpecificIntValue(WidgetType.SCROLL_PANE, "scrollbar-spacing", 3);
if (((JScrollBar) c).getOrientation() == JScrollBar.HORIZONTAL) {
insets.top += spacing;
} else {
if (c.getComponentOrientation().isLeftToRight()) {
insets.left += spacing;
} else {
insets.right += spacing;
}
}
} else {
// This is a standalone scrollbar; leave enough room for the
// focus line in addition to the trough border.
if (c.isFocusable()) {
int focusSize = getClassSpecificIntValue(context, "focus-line-width", 1);
int focusPad = getClassSpecificIntValue(context, "focus-padding", 1);
int totalFocus = focusSize + focusPad;
insets.left += totalFocus;
insets.right += totalFocus;
insets.top += totalFocus;
insets.bottom += totalFocus;
}
}
return insets;
}
private Insets getButtonInsets(SynthContext context, Insets insets) {
// The following calculations are derived from gtkbutton.c
// (GTK+ version 2.8.20), gtk_button_size_allocate() method.
int CHILD_SPACING = 1;
int focusSize = getClassSpecificIntValue(context, "focus-line-width", 1);
int focusPad = getClassSpecificIntValue(context, "focus-padding", 1);
int xThickness = getXThickness();
int yThickness = getYThickness();
int w = focusSize + focusPad + xThickness + CHILD_SPACING;
int h = focusSize + focusPad + yThickness + CHILD_SPACING;
insets.left = insets.right = w;
insets.top = insets.bottom = h;
Component component = context.getComponent();
if ((component instanceof JButton)
&& !(component.getParent() instanceof JToolBar)
&& ((JButton) component).isDefaultCapable()) {
// Include the default border insets, but only for JButtons
// that are default capable. Note that
// JButton.getDefaultCapable() returns true by default, but
// GtkToolButtons are never default capable, so we skip this
// step if the button is contained in a toolbar.
Insets defaultInsets =
getClassSpecificInsetsValue(context, "default-border", BUTTON_DEFAULT_BORDER_INSETS);
insets.left += defaultInsets.left;
insets.right += defaultInsets.right;
insets.top += defaultInsets.top;
insets.bottom += defaultInsets.bottom;
}
return insets;
}
private void updateStyle(JTextComponent comp) {
SynthContext context = getContext(comp, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
if (style != oldStyle) {
SynthTextFieldUI.updateStyle(comp, context, getPropertyPrefix());
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
context.dispose();
}
private Insets getSeparatorInsets(SynthContext context, Insets insets) {
int horizPadding = 0;
if (context.getRegion() == Region.POPUP_MENU_SEPARATOR) {
horizPadding = getClassSpecificIntValue(context, "horizontal-padding", 3);
}
insets.right = insets.left = getXThickness() + horizPadding;
insets.top = insets.bottom = getYThickness();
return insets;
}
private void updateStyle(JSplitPane splitPane) {
SynthContext context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER, ENABLED);
SynthStyle oldDividerStyle = dividerStyle;
dividerStyle = SynthLookAndFeel.updateStyle(context, this);
context.dispose();
context = getContext(splitPane, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
if (style != oldStyle) {
Object value = style.get(context, "SplitPane.size");
if (value == null) {
value = Integer.valueOf(6);
}
LookAndFeel.installProperty(splitPane, "dividerSize", value);
value = style.get(context, "SplitPane.oneTouchExpandable");
if (value != null) {
LookAndFeel.installProperty(splitPane, "oneTouchExpandable", value);
}
if (divider != null) {
splitPane.remove(divider);
divider.setDividerSize(splitPane.getDividerSize());
}
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
if (style != oldStyle || dividerStyle != oldDividerStyle) {
// Only way to force BasicSplitPaneDivider to reread the
// necessary properties.
if (divider != null) {
splitPane.remove(divider);
}
divider = createDefaultDivider();
divider.setBasicSplitPaneUI(this);
splitPane.add(divider, JSplitPane.DIVIDER);
}
context.dispose();
}
/** {@inheritDoc} */
@Override
protected void uninstallDefaults() {
table.setDefaultRenderer(Date.class, dateRenderer);
table.setDefaultRenderer(Number.class, numberRenderer);
table.setDefaultRenderer(Double.class, doubleRender);
table.setDefaultRenderer(Float.class, floatRenderer);
table.setDefaultRenderer(Icon.class, iconRenderer);
table.setDefaultRenderer(ImageIcon.class, imageIconRenderer);
table.setDefaultRenderer(Boolean.class, booleanRenderer);
table.setDefaultRenderer(Object.class, objectRenderer);
if (table.getTransferHandler() instanceof UIResource) {
table.setTransferHandler(null);
}
SynthContext context = getContext(table, ENABLED);
style.uninstallDefaults(context);
context.dispose();
style = null;
}
public void paintIcon(SynthContext context, Graphics g, int x, int y, int w, int h) {
Icon icon = getIcon(context);
if (icon != null) {
if (context == null) {
icon.paintIcon(null, g, x, y);
} else {
icon.paintIcon(context.getComponent(), g, x, y);
}
}
}
protected Color getColorForState(SynthContext context, ColorType type) {
if (type == ColorType.FOCUS || type == GTKColorType.BLACK) {
return BLACK_COLOR;
} else if (type == GTKColorType.WHITE) {
return WHITE_COLOR;
}
Region id = context.getRegion();
int state = context.getComponentState();
state = GTKLookAndFeel.synthStateToGTKState(id, state);
if (type == ColorType.TEXT_FOREGROUND
&& (id == Region.BUTTON
|| id == Region.CHECK_BOX
|| id == Region.CHECK_BOX_MENU_ITEM
|| id == Region.MENU
|| id == Region.MENU_ITEM
|| id == Region.RADIO_BUTTON
|| id == Region.RADIO_BUTTON_MENU_ITEM
|| id == Region.TABBED_PANE_TAB
|| id == Region.TOGGLE_BUTTON
|| id == Region.TOOL_TIP
|| id == Region.MENU_ITEM_ACCELERATOR
|| id == Region.TABBED_PANE_TAB)) {
type = ColorType.FOREGROUND;
} else if (id == Region.TABLE
|| id == Region.LIST
|| id == Region.TREE
|| id == Region.TREE_CELL) {
if (type == ColorType.FOREGROUND) {
type = ColorType.TEXT_FOREGROUND;
if (state == SynthConstants.PRESSED) {
state = SynthConstants.SELECTED;
}
} else if (type == ColorType.BACKGROUND) {
type = ColorType.TEXT_BACKGROUND;
}
}
return getStyleSpecificColor(context, state, type);
}
/**
* Paints the specified component.
*
* @param context context for the component being painted
* @param g the {@code Graphics} object used for painting
* @see #update(Graphics,JComponent)
*/
protected void paint(SynthContext context, Graphics g) {
AbstractButton b = (AbstractButton) context.getComponent();
g.setColor(context.getStyle().getColor(context, ColorType.TEXT_FOREGROUND));
g.setFont(style.getFont(context));
context
.getStyle()
.getGraphicsUtils(context)
.paintText(
context,
g,
b.getText(),
getIcon(b),
b.getHorizontalAlignment(),
b.getVerticalAlignment(),
b.getHorizontalTextPosition(),
b.getVerticalTextPosition(),
b.getIconTextGap(),
b.getDisplayedMnemonicIndex(),
getTextShiftOffset(context));
}
@Override
public Color getColor(SynthContext context, ColorType type) {
JComponent c = context.getComponent();
Region id = context.getRegion();
int state = context.getComponentState();
if (c.getName() == "Table.cellRenderer") {
if (type == ColorType.BACKGROUND) {
return c.getBackground();
}
if (type == ColorType.FOREGROUND) {
return c.getForeground();
}
}
if (id == Region.LABEL && type == ColorType.TEXT_FOREGROUND) {
type = ColorType.FOREGROUND;
}
// For the enabled state, prefer the widget's colors
if (!id.isSubregion() && (state & SynthConstants.ENABLED) != 0) {
if (type == ColorType.BACKGROUND) {
return c.getBackground();
} else if (type == ColorType.FOREGROUND) {
return c.getForeground();
} else if (type == ColorType.TEXT_FOREGROUND) {
// If getForeground returns a non-UIResource it means the
// developer has explicitly set the foreground, use it over
// that of TEXT_FOREGROUND as that is typically the expected
// behavior.
Color color = c.getForeground();
if (color != null && !(color instanceof UIResource)) {
return color;
}
}
}
return getColorForState(context, type);
}
/**
* Returns the color for the specified state.
*
* @param context SynthContext identifying requestor
* @param state to get the color for
* @param type of the color
* @return Color to render with
*/
Color getGTKColor(SynthContext context, int state, ColorType type) {
if (context != null) {
JComponent c = context.getComponent();
Region id = context.getRegion();
state = GTKLookAndFeel.synthStateToGTKState(id, state);
if (!id.isSubregion() && (state & SynthConstants.ENABLED) != 0) {
if (type == ColorType.BACKGROUND || type == ColorType.TEXT_BACKGROUND) {
Color bg = c.getBackground();
if (!(bg instanceof UIResource)) {
return bg;
}
} else if (type == ColorType.FOREGROUND || type == ColorType.TEXT_FOREGROUND) {
Color fg = c.getForeground();
if (!(fg instanceof UIResource)) {
return fg;
}
}
}
}
return getStyleSpecificColor(context, state, type);
}
private Icon getIcon(SynthContext context) {
if (context != null) {
ComponentOrientation co = context.getComponent().getComponentOrientation();
SynthStyle style = context.getStyle();
if (style != this.style) {
this.style = style;
loadedLTR = loadedRTL = false;
}
if (co == null || co.isLeftToRight()) {
if (!loadedLTR) {
loadedLTR = true;
ltrIcon = ((GTKStyle) context.getStyle()).getStockIcon(context, key, size);
}
return ltrIcon;
} else if (!loadedRTL) {
loadedRTL = true;
rtlIcon = ((GTKStyle) context.getStyle()).getStockIcon(context, key, size);
}
return rtlIcon;
}
return ltrIcon;
}
/**
* Returns the value to initialize the opacity property of the Component to. A Style should NOT
* assume the opacity will remain this value, the developer may reset it or override it.
*
* @param context SynthContext identifying requestor
* @return opaque Whether or not the JComponent is opaque.
*/
@Override
public boolean isOpaque(SynthContext context) {
Region region = context.getRegion();
if (region == Region.COMBO_BOX
|| region == Region.DESKTOP_PANE
|| region == Region.DESKTOP_ICON
|| region == Region.EDITOR_PANE
|| region == Region.FORMATTED_TEXT_FIELD
|| region == Region.INTERNAL_FRAME
|| region == Region.LIST
|| region == Region.MENU_BAR
|| region == Region.PANEL
|| region == Region.PASSWORD_FIELD
|| region == Region.POPUP_MENU
|| region == Region.PROGRESS_BAR
|| region == Region.ROOT_PANE
|| region == Region.SCROLL_PANE
|| region == Region.SPINNER
|| region == Region.SPLIT_PANE_DIVIDER
|| region == Region.TABLE
|| region == Region.TEXT_AREA
|| region == Region.TEXT_FIELD
|| region == Region.TEXT_PANE
|| region == Region.TOOL_BAR_DRAG_WINDOW
|| region == Region.TOOL_TIP
|| region == Region.TREE
|| region == Region.VIEWPORT) {
return true;
}
Component c = context.getComponent();
String name = c.getName();
if (name == "ComboBox.renderer" || name == "ComboBox.listRenderer") {
return true;
}
return false;
}
/*
* This is used for both RADIO_BUTTON and CHECK_BOX.
*/
private Insets getRadioInsets(SynthContext context, Insets insets) {
// The following calculations are derived from gtkcheckbutton.c
// (GTK+ version 2.8.20), gtk_check_button_size_allocate() method.
int focusSize = getClassSpecificIntValue(context, "focus-line-width", 1);
int focusPad = getClassSpecificIntValue(context, "focus-padding", 1);
int totalFocus = focusSize + focusPad;
// Note: GTKIconFactory.DelegateIcon will have already included the
// "indicator-spacing" value in the size of the indicator icon,
// which explains why we use zero as the left inset (or right inset
// in the RTL case); see 6489585 for more details.
insets.top = totalFocus;
insets.bottom = totalFocus;
if (context.getComponent().getComponentOrientation().isLeftToRight()) {
insets.left = 0;
insets.right = totalFocus;
} else {
insets.left = totalFocus;
insets.right = 0;
}
return insets;
}
private Icon getStockIcon(SynthContext context, String key, int type) {
TextDirection direction = TextDirection.LTR;
if (context != null) {
ComponentOrientation co = context.getComponent().getComponentOrientation();
if (co != null && !co.isLeftToRight()) {
direction = TextDirection.RTL;
}
}
// First try loading a theme-specific icon using the native
// GTK libraries (native GTK handles the resizing for us).
Icon icon = getStyleSpecificIcon(key, direction, type);
if (icon != null) {
return icon;
}
// In a failure case where native GTK (unexpectedly) returns a
// null icon, we can try loading a default icon as a fallback.
String propName =
ICON_PROPERTY_PREFIX
+ key
+ '.'
+ type
+ '.'
+ (direction == TextDirection.RTL ? "rtl" : "ltr");
Image img = (Image) Toolkit.getDefaultToolkit().getDesktopProperty(propName);
if (img != null) {
return new ImageIcon(img);
}
// In an extreme failure situation, just return null (callers are
// already prepared to handle a null icon, so the worst that can
// happen is that an icon won't be included in the button/dialog).
return null;
}
