/*******************************************************************************
?*?Copyright?（c）?2011?Google?Inc.
?*?All?rights?reserved.?This?program?and?the?accompanying?materials
?*?are?made?available?under?the?terms?of?the?Eclipse?Public?License?v1.0
?*?which?accompanies?this?distribution?and?is?available?at
?*?http://www.eclipse.org/legal/epl-v10.html
?*
?*?Contributors:
?*????Google?Inc.?-?initial?API?and?implementation
?*******************************************************************************/
package?org.eclipse.wb.swing;

import?java.awt.Component;
import?java.awt.Container;
import?java.awt.FocusTraversalPolicy;

/**
?*?Cyclic?focus?traversal?policy?based?on?array?of?components.
?*?

?*?This?class?may?be?freely?distributed?as?part?of?any?application?or?plugin.
?*?
?*?@author?scheglov_ke
?*/
public?class?FocusTraversalOnArray?extends?FocusTraversalPolicy?{
	private?final?Component?m_Components[];
	////////////////////////////////////////////////////////////////////////////
	//
	//?Constructor
	//
	////////////////////////////////////////////////////////////////////////////
	public?FocusTraversalOnArray（Component?components[]）?{
		m_Components?=?components;
	}
	////////////////////////////////////////////////////////////////////////////
	//
	//?Utilities
	//
	////////////////////////////////////////////////////////////////////////////
	private?int?indexCycle（int?index?int?delta）?{
		int?size?=?m_Components.length;
		int?next?=?（index?+?delta?+?size）?%?size;
		return?next;
	}
	private?Component?cycle（Component?currentComponent?int?delta）?{
		int?index?=?-1;
		loop?:?for?（int?i?=?0;?i?			Component?component?=?m_Components[i];
			for?（Component?c?=?currentComponent;?c?!=?null;?c?=?c.getParent（））?{
				if?（component?==?c）?{
					index?=?i;
					break?loop;
				}
			}
		}
		//?try?to?find?enabled?component?in?“delta“?direction
		int?initialIndex?=?index;
		while?（true）?{
			int?newIndex?=?indexCycle（index?delta）;
			if?（newIndex?==?initialIndex）?{
				break;
			}
			index?=?newIndex;
			//
			Component?component?=?m_Components[newIndex];
			if?（component.isEnabled（）?&&?component.isVisible（）?&&?component.isFocusable（））?{
				return?component;
			}
		}
		//?not?found
		return?currentComponent;
	}
	////////////////////////////////////////////////////////////////////////////
	//
	//?FocusTraversalPolicy
	//
	////////////////////////////////////////////////////////////////////////////
	public?Component?getComponentAfter（Container?container?Component?component）?{
		return?cycle（component?1）;
	}
	public?Component?getComponentBefore（Container?container?Component?component）?{
		return?cycle（component?-1）;
	}
	public?Component?getFirstComponent（Container?container）?{
		return?m_Components[0];
	}
	public?Component?getLastComponent（Container?container）?{
		return?m_Components[m_Components.length?-?1];
	}
	public?Component?getDefaultComponent（Container?container）?{
		return?getFirstComponent（contain

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-07-30?15:35??yan0603\
?????文件?????????614??2017-06-05?08:10??yan0603\.classpath
?????文件?????????383??2017-06-03?15:09??yan0603\.project
?????目錄???????????0??2018-07-30?15:35??yan0603\.settings\
?????文件?????????598??2017-06-03?15:09??yan0603\.settings\org.eclipse.jdt.core.prefs
?????文件?????????932??2017-06-08?15:40??yan0603\BackgroundImage.jar
?????目錄???????????0??2018-07-30?15:35??yan0603\bin\
?????目錄???????????0??2018-07-30?15:35??yan0603\bin\org\
?????目錄???????????0??2018-07-30?15:35??yan0603\bin\org\eclipse\
?????目錄???????????0??2018-07-30?15:35??yan0603\bin\org\eclipse\wb\
?????目錄???????????0??2018-07-30?15:35??yan0603\bin\org\eclipse\wb\swing\
?????文件????????1988??2017-06-08?15:59??yan0603\bin\org\eclipse\wb\swing\FocusTraversalOnArray.class
?????目錄???????????0??2018-07-30?15:35??yan0603\bin\yan0603\
?????文件?????????607??2017-06-12?10:43??yan0603\bin\yan0603\Login$1.class
?????文件????????7015??2017-06-12?10:43??yan0603\bin\yan0603\Login.class
?????文件?????????625??2017-06-11?08:42??yan0603\bin\yan0603\Register$1.class
?????文件????????6582??2017-06-11?08:42??yan0603\bin\yan0603\Register.class
?????文件????????3553??2017-06-10?16:40??yan0603\bin\yan0603\Select.class
?????文件?????????789??2017-06-09?11:26??yan0603\bin\yan0603\Vote$1.class
?????文件????????3595??2017-06-09?11:26??yan0603\bin\yan0603\Vote$MyActionListener.class
?????文件????????9069??2017-06-09?11:26??yan0603\bin\yan0603\Vote.class
?????文件????????7753??2017-06-09?11:26??yan0603\bin\yan0603\VoteBuy.class
?????文件???????81600??2017-06-03?21:58??yan0603\jgoodies-common-1.8.0-sources.jar
?????文件???????44882??2017-06-03?21:58??yan0603\jgoodies-common-1.8.0.jar
?????文件??????174206??2017-06-03?21:58??yan0603\jgoodies-forms-1.8.0-sources.jar
?????文件??????131647??2017-06-03?21:58??yan0603\jgoodies-forms-1.8.0.jar
?????目錄???????????0??2018-07-30?15:35??yan0603\src\
?????目錄???????????0??2018-07-30?15:35??yan0603\src\org\
?????目錄???????????0??2018-07-30?15:35??yan0603\src\org\eclipse\
?????目錄???????????0??2018-07-30?15:35??yan0603\src\org\eclipse\wb\
?????目錄???????????0??2018-07-30?15:35??yan0603\src\org\eclipse\wb\swing\
............此處省略10個(gè)文件信息