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The Region.java Java example source code
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package javax.swing.plaf.synth;
import sun.awt.AppContext;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import javax.swing.JComponent;
import javax.swing.UIDefaults;
/**
* A distinct rendering area of a Swing component. A component may
* support one or more regions. Specific component regions are defined
* by the typesafe enumeration in this class.
* <p>
* Regions are typically used as a way to identify the <code>Components
* and areas a particular style is to apply to. Synth's file format allows you
* to bind styles based on the name of a <code>Region.
* The name is derived from the field name of the constant:
* <ol>
* <li>Map all characters to lowercase.
* <li>Map the first character to uppercase.
* <li>Map the first character after underscores to uppercase.
* <li>Remove all underscores.
* </ol>
* For example, to identify the <code>SPLIT_PANE
* <code>Region you would use SplitPane .
* The following shows a custom <code>SynthStyleFactory
* that returns a specific style for split panes:
* <pre>
* public SynthStyle getStyle(JComponent c, Region id) {
* if (id == Region.SPLIT_PANE) {
* return splitPaneStyle;
* }
* ...
* }
* </pre>
* The following <a href="doc-files/synthFileFormat.html">xml
* accomplishes the same thing:
* <pre>
* <style id="splitPaneStyle">
* ...
* </style>
* <bind style="splitPaneStyle" type="region" key="SplitPane"/>
* </pre>
*
* @since 1.5
* @author Scott Violet
*/
public class Region {
private static final Object UI_TO_REGION_MAP_KEY = new Object();
private static final Object LOWER_CASE_NAME_MAP_KEY = new Object();
/**
* ArrowButton's are special types of buttons that also render a
* directional indicator, typically an arrow. ArrowButtons are used by
* composite components, for example ScrollBar's contain ArrowButtons.
* To bind a style to this <code>Region use the name
* <code>ArrowButton.
*/
public static final Region ARROW_BUTTON = new Region("ArrowButton", false);
/**
* Button region. To bind a style to this <code>Region use the name
* <code>Button.
*/
public static final Region BUTTON = new Region("Button", false);
/**
* CheckBox region. To bind a style to this <code>Region use the name
* <code>CheckBox.
*/
public static final Region CHECK_BOX = new Region("CheckBox", false);
/**
* CheckBoxMenuItem region. To bind a style to this <code>Region use
* the name <code>CheckBoxMenuItem.
*/
public static final Region CHECK_BOX_MENU_ITEM = new Region("CheckBoxMenuItem", false);
/**
* ColorChooser region. To bind a style to this <code>Region use
* the name <code>ColorChooser.
*/
public static final Region COLOR_CHOOSER = new Region("ColorChooser", false);
/**
* ComboBox region. To bind a style to this <code>Region use
* the name <code>ComboBox.
*/
public static final Region COMBO_BOX = new Region("ComboBox", false);
/**
* DesktopPane region. To bind a style to this <code>Region use
* the name <code>DesktopPane.
*/
public static final Region DESKTOP_PANE = new Region("DesktopPane", false);
/**
* DesktopIcon region. To bind a style to this <code>Region use
* the name <code>DesktopIcon.
*/
public static final Region DESKTOP_ICON = new Region("DesktopIcon", false);
/**
* EditorPane region. To bind a style to this <code>Region use
* the name <code>EditorPane.
*/
public static final Region EDITOR_PANE = new Region("EditorPane", false);
/**
* FileChooser region. To bind a style to this <code>Region use
* the name <code>FileChooser.
*/
public static final Region FILE_CHOOSER = new Region("FileChooser", false);
/**
* FormattedTextField region. To bind a style to this <code>Region use
* the name <code>FormattedTextField.
*/
public static final Region FORMATTED_TEXT_FIELD = new Region("FormattedTextField", false);
/**
* InternalFrame region. To bind a style to this <code>Region use
* the name <code>InternalFrame.
*/
public static final Region INTERNAL_FRAME = new Region("InternalFrame", false);
/**
* TitlePane of an InternalFrame. The TitlePane typically
* shows a menu, title, widgets to manipulate the internal frame.
* To bind a style to this <code>Region use the name
* <code>InternalFrameTitlePane.
*/
public static final Region INTERNAL_FRAME_TITLE_PANE = new Region("InternalFrameTitlePane", false);
/**
* Label region. To bind a style to this <code>Region use the name
* <code>Label.
*/
public static final Region LABEL = new Region("Label", false);
/**
* List region. To bind a style to this <code>Region use the name
* <code>List.
*/
public static final Region LIST = new Region("List", false);
/**
* Menu region. To bind a style to this <code>Region use the name
* <code>Menu.
*/
public static final Region MENU = new Region("Menu", false);
/**
* MenuBar region. To bind a style to this <code>Region use the name
* <code>MenuBar.
*/
public static final Region MENU_BAR = new Region("MenuBar", false);
/**
* MenuItem region. To bind a style to this <code>Region use the name
* <code>MenuItem.
*/
public static final Region MENU_ITEM = new Region("MenuItem", false);
/**
* Accelerator region of a MenuItem. To bind a style to this
* <code>Region use the name MenuItemAccelerator .
*/
public static final Region MENU_ITEM_ACCELERATOR = new Region("MenuItemAccelerator", true);
/**
* OptionPane region. To bind a style to this <code>Region use
* the name <code>OptionPane.
*/
public static final Region OPTION_PANE = new Region("OptionPane", false);
/**
* Panel region. To bind a style to this <code>Region use the name
* <code>Panel.
*/
public static final Region PANEL = new Region("Panel", false);
/**
* PasswordField region. To bind a style to this <code>Region use
* the name <code>PasswordField.
*/
public static final Region PASSWORD_FIELD = new Region("PasswordField", false);
/**
* PopupMenu region. To bind a style to this <code>Region use
* the name <code>PopupMenu.
*/
public static final Region POPUP_MENU = new Region("PopupMenu", false);
/**
* PopupMenuSeparator region. To bind a style to this <code>Region
* use the name <code>PopupMenuSeparator.
*/
public static final Region POPUP_MENU_SEPARATOR = new Region("PopupMenuSeparator", false);
/**
* ProgressBar region. To bind a style to this <code>Region
* use the name <code>ProgressBar.
*/
public static final Region PROGRESS_BAR = new Region("ProgressBar", false);
/**
* RadioButton region. To bind a style to this <code>Region
* use the name <code>RadioButton.
*/
public static final Region RADIO_BUTTON = new Region("RadioButton", false);
/**
* RegionButtonMenuItem region. To bind a style to this <code>Region
* use the name <code>RadioButtonMenuItem.
*/
public static final Region RADIO_BUTTON_MENU_ITEM = new Region("RadioButtonMenuItem", false);
/**
* RootPane region. To bind a style to this <code>Region use
* the name <code>RootPane.
*/
public static final Region ROOT_PANE = new Region("RootPane", false);
/**
* ScrollBar region. To bind a style to this <code>Region use
* the name <code>ScrollBar.
*/
public static final Region SCROLL_BAR = new Region("ScrollBar", false);
/**
* Track of the ScrollBar. To bind a style to this <code>Region use
* the name <code>ScrollBarTrack.
*/
public static final Region SCROLL_BAR_TRACK = new Region("ScrollBarTrack", true);
/**
* Thumb of the ScrollBar. The thumb is the region of the ScrollBar
* that gives a graphical depiction of what percentage of the View is
* currently visible. To bind a style to this <code>Region use
* the name <code>ScrollBarThumb.
*/
public static final Region SCROLL_BAR_THUMB = new Region("ScrollBarThumb", true);
/**
* ScrollPane region. To bind a style to this <code>Region use
* the name <code>ScrollPane.
*/
public static final Region SCROLL_PANE = new Region("ScrollPane", false);
/**
* Separator region. To bind a style to this <code>Region use
* the name <code>Separator.
*/
public static final Region SEPARATOR = new Region("Separator", false);
/**
* Slider region. To bind a style to this <code>Region use
* the name <code>Slider.
*/
public static final Region SLIDER = new Region("Slider", false);
/**
* Track of the Slider. To bind a style to this <code>Region use
* the name <code>SliderTrack.
*/
public static final Region SLIDER_TRACK = new Region("SliderTrack", true);
/**
* Thumb of the Slider. The thumb of the Slider identifies the current
* value. To bind a style to this <code>Region use the name
* <code>SliderThumb.
*/
public static final Region SLIDER_THUMB = new Region("SliderThumb", true);
/**
* Spinner region. To bind a style to this <code>Region use the name
* <code>Spinner.
*/
public static final Region SPINNER = new Region("Spinner", false);
/**
* SplitPane region. To bind a style to this <code>Region use the name
* <code>SplitPane.
*/
public static final Region SPLIT_PANE = new Region("SplitPane", false);
/**
* Divider of the SplitPane. To bind a style to this <code>Region
* use the name <code>SplitPaneDivider.
*/
public static final Region SPLIT_PANE_DIVIDER = new Region("SplitPaneDivider", true);
/**
* TabbedPane region. To bind a style to this <code>Region use
* the name <code>TabbedPane.
*/
public static final Region TABBED_PANE = new Region("TabbedPane", false);
/**
* Region of a TabbedPane for one tab. To bind a style to this
* <code>Region use the name TabbedPaneTab .
*/
public static final Region TABBED_PANE_TAB = new Region("TabbedPaneTab", true);
/**
* Region of a TabbedPane containing the tabs. To bind a style to this
* <code>Region use the name TabbedPaneTabArea .
*/
public static final Region TABBED_PANE_TAB_AREA = new Region("TabbedPaneTabArea", true);
/**
* Region of a TabbedPane containing the content. To bind a style to this
* <code>Region use the name TabbedPaneContent .
*/
public static final Region TABBED_PANE_CONTENT = new Region("TabbedPaneContent", true);
/**
* Table region. To bind a style to this <code>Region use
* the name <code>Table.
*/
public static final Region TABLE = new Region("Table", false);
/**
* TableHeader region. To bind a style to this <code>Region use
* the name <code>TableHeader.
*/
public static final Region TABLE_HEADER = new Region("TableHeader", false);
/**
* TextArea region. To bind a style to this <code>Region use
* the name <code>TextArea.
*/
public static final Region TEXT_AREA = new Region("TextArea", false);
/**
* TextField region. To bind a style to this <code>Region use
* the name <code>TextField.
*/
public static final Region TEXT_FIELD = new Region("TextField", false);
/**
* TextPane region. To bind a style to this <code>Region use
* the name <code>TextPane.
*/
public static final Region TEXT_PANE = new Region("TextPane", false);
/**
* ToggleButton region. To bind a style to this <code>Region use
* the name <code>ToggleButton.
*/
public static final Region TOGGLE_BUTTON = new Region("ToggleButton", false);
/**
* ToolBar region. To bind a style to this <code>Region use
* the name <code>ToolBar.
*/
public static final Region TOOL_BAR = new Region("ToolBar", false);
/**
* Region of the ToolBar containing the content. To bind a style to this
* <code>Region use the name ToolBarContent .
*/
public static final Region TOOL_BAR_CONTENT = new Region("ToolBarContent", true);
/**
* Region for the Window containing the ToolBar. To bind a style to this
* <code>Region use the name ToolBarDragWindow .
*/
public static final Region TOOL_BAR_DRAG_WINDOW = new Region("ToolBarDragWindow", false);
/**
* ToolTip region. To bind a style to this <code>Region use
* the name <code>ToolTip.
*/
public static final Region TOOL_TIP = new Region("ToolTip", false);
/**
* ToolBar separator region. To bind a style to this <code>Region use
* the name <code>ToolBarSeparator.
*/
public static final Region TOOL_BAR_SEPARATOR = new Region("ToolBarSeparator", false);
/**
* Tree region. To bind a style to this <code>Region use the name
* <code>Tree.
*/
public static final Region TREE = new Region("Tree", false);
/**
* Region of the Tree for one cell. To bind a style to this
* <code>Region use the name TreeCell .
*/
public static final Region TREE_CELL = new Region("TreeCell", true);
/**
* Viewport region. To bind a style to this <code>Region use
* the name <code>Viewport.
*/
public static final Region VIEWPORT = new Region("Viewport", false);
private static Map<String, Region> getUItoRegionMap() {
AppContext context = AppContext.getAppContext();
Map<String, Region> map = (Map) context.get(UI_TO_REGION_MAP_KEY);
if (map == null) {
map = new HashMap<String, Region>();
map.put("ArrowButtonUI", ARROW_BUTTON);
map.put("ButtonUI", BUTTON);
map.put("CheckBoxUI", CHECK_BOX);
map.put("CheckBoxMenuItemUI", CHECK_BOX_MENU_ITEM);
map.put("ColorChooserUI", COLOR_CHOOSER);
map.put("ComboBoxUI", COMBO_BOX);
map.put("DesktopPaneUI", DESKTOP_PANE);
map.put("DesktopIconUI", DESKTOP_ICON);
map.put("EditorPaneUI", EDITOR_PANE);
map.put("FileChooserUI", FILE_CHOOSER);
map.put("FormattedTextFieldUI", FORMATTED_TEXT_FIELD);
map.put("InternalFrameUI", INTERNAL_FRAME);
map.put("InternalFrameTitlePaneUI", INTERNAL_FRAME_TITLE_PANE);
map.put("LabelUI", LABEL);
map.put("ListUI", LIST);
map.put("MenuUI", MENU);
map.put("MenuBarUI", MENU_BAR);
map.put("MenuItemUI", MENU_ITEM);
map.put("OptionPaneUI", OPTION_PANE);
map.put("PanelUI", PANEL);
map.put("PasswordFieldUI", PASSWORD_FIELD);
map.put("PopupMenuUI", POPUP_MENU);
map.put("PopupMenuSeparatorUI", POPUP_MENU_SEPARATOR);
map.put("ProgressBarUI", PROGRESS_BAR);
map.put("RadioButtonUI", RADIO_BUTTON);
map.put("RadioButtonMenuItemUI", RADIO_BUTTON_MENU_ITEM);
map.put("RootPaneUI", ROOT_PANE);
map.put("ScrollBarUI", SCROLL_BAR);
map.put("ScrollPaneUI", SCROLL_PANE);
map.put("SeparatorUI", SEPARATOR);
map.put("SliderUI", SLIDER);
map.put("SpinnerUI", SPINNER);
map.put("SplitPaneUI", SPLIT_PANE);
map.put("TabbedPaneUI", TABBED_PANE);
map.put("TableUI", TABLE);
map.put("TableHeaderUI", TABLE_HEADER);
map.put("TextAreaUI", TEXT_AREA);
map.put("TextFieldUI", TEXT_FIELD);
map.put("TextPaneUI", TEXT_PANE);
map.put("ToggleButtonUI", TOGGLE_BUTTON);
map.put("ToolBarUI", TOOL_BAR);
map.put("ToolTipUI", TOOL_TIP);
map.put("ToolBarSeparatorUI", TOOL_BAR_SEPARATOR);
map.put("TreeUI", TREE);
map.put("ViewportUI", VIEWPORT);
context.put(UI_TO_REGION_MAP_KEY, map);
}
return map;
}
private static Map<Region, String> getLowerCaseNameMap() {
AppContext context = AppContext.getAppContext();
Map<Region, String> map = (Map) context.get(LOWER_CASE_NAME_MAP_KEY);
if (map == null) {
map = new HashMap<Region, String>();
context.put(LOWER_CASE_NAME_MAP_KEY, map);
}
return map;
}
static Region getRegion(JComponent c) {
return getUItoRegionMap().get(c.getUIClassID());
}
static void registerUIs(UIDefaults table) {
for (Object key : getUItoRegionMap().keySet()) {
table.put(key, "javax.swing.plaf.synth.SynthLookAndFeel");
}
}
private final String name;
private final boolean subregion;
private Region(String name, boolean subregion) {
if (name == null) {
throw new NullPointerException("You must specify a non-null name");
}
this.name = name;
this.subregion = subregion;
}
/**
* Creates a Region with the specified name. This should only be
* used if you are creating your own <code>JComponent subclass
* with a custom <code>ComponentUI class.
*
* @param name Name of the region
* @param ui String that will be returned from
* <code>component.getUIClassID. This will be null
* if this is a subregion.
* @param subregion Whether or not this is a subregion.
*/
protected Region(String name, String ui, boolean subregion) {
this(name, subregion);
if (ui != null) {
getUItoRegionMap().put(ui, this);
}
}
/**
* Returns true if the Region is a subregion of a Component, otherwise
* false. For example, <code>Region.BUTTON corresponds do a
* <code>Component so that Region.BUTTON.isSubregion()
* returns false.
*
* @return true if the Region is a subregion of a Component.
*/
public boolean isSubregion() {
return subregion;
}
/**
* Returns the name of the region.
*
* @return name of the Region.
*/
public String getName() {
return name;
}
/**
* Returns the name, in lowercase.
*
* @return lower case representation of the name of the Region
*/
String getLowerCaseName() {
Map<Region, String> lowerCaseNameMap = getLowerCaseNameMap();
String lowerCaseName = lowerCaseNameMap.get(this);
if (lowerCaseName == null) {
lowerCaseName = name.toLowerCase(Locale.ENGLISH);
lowerCaseNameMap.put(this, lowerCaseName);
}
return lowerCaseName;
}
/**
* Returns the name of the Region.
*
* @return name of the Region.
*/
@Override
public String toString() {
return name;
}
}
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