javafx treeview 树形菜单渲染公用接口

package application.bean; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Map.Entry; import application.utilstool.RegexpTool; import javafx.scene.control.TreeItem; import javafx.scene.control.TreeView; public class MenuNode { //private Map<String, Object> fields; private String parentID = "-1"; private String menuId = "0"; private String menuName = "0"; private String orderById = "";//暂不实现 private String remark = ""; private String icon = ""; //icon图形 private String style = "";//风格，暂不实现 private String show = "1";//是否展示， private boolean expanded = true;//根节点是否展开 private String path;//点击菜单跳转到fxml，路径 /** * 菜单字段的格式，其中必须有数字，如菜单id：f_f_2_menuId,2表示是第二层菜单 */ public static final String menuFieldReg = "^[a-zA-Z_]+_\\d+_[a-zA-Z_]+"; public static final String menuFieldRegLeft = "^[a-zA-Z_]+_"; /** * 默认菜单字段的格式 */ public static final String menuFieldRegDefalt = "f_f_"; //子菜单 private List<MenuNode> menuSub = new ArrayList<MenuNode>(); public MenuNode() { } public MenuNode(String parentID, String menuId, String menuName, boolean expanded, String icon) { this.parentID = parentID; this.menuId = menuId; this.menuName = menuName; this.expanded = expanded; this.icon = icon; } public MenuNode(String parentID, String menuId, String menuName, String orderById, String remark, String icon, String style, List<MenuNode> menuSub) { super(); this.parentID = parentID; this.menuId = menuId; this.menuName = menuName; this.orderById = orderById; this.remark = remark; this.icon = icon; this.style = style; this.menuSub = menuSub; } public MenuNode(String parentID, String menuId, String menuName, String orderById, String remark, String icon, String style, String show, boolean expanded, String path) { super(); this.parentID = parentID; this.menuId = menuId; this.menuName = menuName; this.orderById = orderById; this.remark = remark; this.icon = icon; this.style = style; this.show = show; this.expanded = expanded; this.path = path; } /** * Desc:通过list获取菜单类MenuNode,核心算法， * @author jld.zhangzhou * @datetime 2020-03-31 16:05:16 * @modify_record: * @param muneList * @param arg arg[0] is pattern '[a-zA-Z_]+_' ,like 'ab_c_d_c_ ',so, the field of list's row must be like 'ab_c_d_c_2_menuId' * that means menu is of 2th level,and the field's value is related to menuId of class MenuNode; * @return * @throws Exception */ public static MenuNode getMenu(List<Map<String, Object>> muneList,MenuNode rootMenuNode, String... arg) throws Exception { MenuNode rootMenu = rootMenuNode; String menuStartWith = menuFieldRegDefalt; if(arg.length > 0) {//针对arg有参数， menuStartWith = arg[0]; if(!RegexpTool.isMatch(menuStartWith, menuFieldRegLeft)) { throw new Exception(String.format("arg[0] pattern is not '%s'", menuFieldRegLeft) ); } } /** * 1、获取菜单层次 */ int maxLevel = 0;//菜单最大层数 boolean f_1th_map = true;//第一次遍历muneList标记 for(Map<String, Object> map : muneList) {//遍历数据行（f1_*,f1_*,f2_*,f2_*格式的数据）（后改成f_f_1_*） if(f_1th_map) {//第一次遍历记录maxLevel for(Entry<String, Object> entry : map.entrySet()) { if(!RegexpTool.isMatch(entry.getKey(), menuFieldRegLeft + ".*")) { continue; }else { if(!RegexpTool.isMatch(entry.getKey(), menuFieldReg)) { throw new Exception(String.format("muneList field about mune %s pattern is not '%s'", entry.getKey(), menuFieldReg)); } } String levelStr = RegexpTool.getOneByReg(entry.getKey(), "(?<="+menuStartWith+")\\d+"); int level = Integer.parseInt(levelStr == null ? "0" : levelStr);//获取当前菜单层级。 if(maxLevel < level) { maxLevel = level; } } f_1th_map = false; } int i = 0; List<MenuNode> enuNodeList_1 = new ArrayList<>(); MenuNode menuNode = null; String parentId = ""; while(maxLevel > i) {//依次处理 f1,f2,f3,f4...........，该行各个层级的数据，放入rootMenu 对应的位置。 if(i == 0) { enuNodeList_1 = rootMenu.getMenuSub(); }else { enuNodeList_1 = menuNode.getMenuSub(); } /** * 获取map值。 */ String parentID = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"parentID")); String menuId = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"menuId")); String menuName = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"menuName")); String orderById = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"orderById")); String remark = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"remark")); String icon = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"icon")); String style = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"style")); String show = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"show")); String path = (String) map.get(String.format("%s%d_%s", menuStartWith,i+1,"path")); boolean expanded = (boolean) (map.get(String.format("%s%d_%s", menuStartWith,i+1,"expanded")) == null ? false :map.get(String.format("%s%d_%s", menuStartWith,i+1,"expanded"))); if(menuId == null) { break; } if(enuNodeList_1.size() == 0) { menuNode = new MenuNode(parentID == null ? "-1" : parentID, menuId == null ? "0" : menuId, menuName == null ? "0" : menuName, orderById == null ? "" : orderById, remark == null ? "" : remark, icon == null ? "" : icon, style == null ? "" : style, show==null ? "1" : show, expanded, path); enuNodeList_1.add(menuNode); }else { //如果size>0，且相等于当前，则menuNode重新指向；如果size=0且不相等，则新建。 boolean f_sizem0e = false;//flag for(MenuNode m : enuNodeList_1) { if(m.getMenuId().equals(menuId)) { menuNode = m; f_sizem0e = true; break; } } if(!f_sizem0e) { menuNode = new MenuNode(parentID == null ? "-1" : parentID, menuId == null ? "0" : menuId, menuName == null ? "0" : menuName, orderById == null ? "" : orderById, remark == null ? "" : remark, icon == null ? "" : icon, style == null ? "" : style, show==null ? "1" : show, expanded, path); enuNodeList_1.add(menuNode); } } enuNodeList_1 = menuNode.getMenuSub();//重新指向下一个menuNode i++; } } return rootMenu; } public static MenuNode getMenu(List<Map<String, Object>> muneList, String... arg) throws Exception { return MenuNode.getMenu(muneList, new MenuNode(), arg); } /** * Desc:get treeview by MenuNode * @author jld.zhangzhou * @datetime 2020-04-13 11:03:01 * @modify_record: * @param menuNode * @return */ public static TreeView<String> getMenuTreeview(MenuNode menuNode) { if(menuNode == null) { return null; } TreeItem<String> rootNode = new TreeItem<String>(menuNode.getMenuName()); rootNode.setExpanded(menuNode.getExpanded()); MenuNode.setMenuNodeToTreeItem(rootNode, menuNode); TreeView<String> tree = new TreeView<> (rootNode); return tree; } /** * Desc:get treeview by muneList * @author jld.zhangzhou * @datetime 2020-04-13 16:53:39 * @modify_record: * @param muneList * @return * @throws Exception */ public static TreeView<String> getMenuTreeview(List<Map<String, Object>> muneList) throws Exception { return MenuNode.getM