jstree修改右键菜单选项

本文深入解析了jsTree插件,这是一个基于jQuery的交互式树形控件,提供了丰富的功能如创建、重命名、删除和拖动节点。文章详细介绍了如何通过配置.jstree.defaults.contextmenu.items来自定义右键菜单,实现对树形结构的修改。

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jsTree 是一个jquery 插件, 提供交互式树.它是完全免费的,开源的,并根据MIT许可进行分发。jsTree易于扩展,可定义和配置,它支持HTML和JSON数据源以及AJAX加载。(https://www.jstree.com.cn/ 中文网).可实现如下效果:
在这里插入图片描述
右键单击节点可以创建,删除,修改,移动节点,默认是英文的. 可以通过配置
.jstree.defaults.contextmenu.items来定制.(请记住,默认情况下,禁止对树的所有修改,包括创建,重命名,移动,删除,要启用它们,必须将core.checkcallback设置为true).jsTree官网api文档对每个参数都有简单说明,具体的配置可以查看jsTree源码,例如对.jstree.defaults.contextmenu.items来定制. (请记住,默认情况下,禁止对树的所有修改,包括创建,重命名,移动,删除, 要启用它们,必须将core.check_callback设置为true). jsTree官网api文档对每个参数都有简单说明, 具体的配置可以查看jsTree源码, 例如对.jstree.defaults.contextmenu.items.(,,,,,,,,core.checkcallbacktrue).jsTreeapi,jsTree,.jstree.defaults.contextmenu.items的配置, 源码如下:

$.jstree.defaults.contextmenu = {
		/**
		 * a boolean indicating if the node should be selected when the context menu is invoked on it. Defaults to `true`.
		 * @name $.jstree.defaults.contextmenu.select_node
		 * @plugin contextmenu
		 */
		select_node : true,
		/**
		 * a boolean indicating if the menu should be shown aligned with the node. Defaults to `true`, otherwise the mouse coordinates are used.
		 * @name $.jstree.defaults.contextmenu.show_at_node
		 * @plugin contextmenu
		 */
		show_at_node : true,
		/**
		 * an object of actions, or a function that accepts a node and a callback function and calls the callback function with an object of actions available for that node (you can also return the items too).
		 *
		 * Each action consists of a key (a unique name) and a value which is an object with the following properties (only label and action are required). Once a menu item is activated the `action` function will be invoked with an object containing the following keys: item - the contextmenu item definition as seen below, reference - the DOM node that was used (the tree node), element - the contextmenu DOM element, position - an object with x/y properties indicating the position of the menu.
		 *
		 * * `separator_before` - a boolean indicating if there should be a separator before this item
		 * * `separator_after` - a boolean indicating if there should be a separator after this item
		 * * `_disabled` - a boolean indicating if this action should be disabled
		 * * `label` - a string - the name of the action (could be a function returning a string)
		 * * `title` - a string - an optional tooltip for the item
		 * * `action` - a function to be executed if this item is chosen, the function will receive 
		 * * `icon` - a string, can be a path to an icon or a className, if using an image that is in the current directory use a `./` prefix, otherwise it will be detected as a class
		 * * `shortcut` - keyCode which will trigger the action if the menu is open (for example `113` for rename, which equals F2)
		 * * `shortcut_label` - shortcut label (like for example `F2` for rename)
		 * * `submenu` - an object with the same structure as $.jstree.defaults.contextmenu.items which can be used to create a submenu - each key will be rendered as a separate option in a submenu that will appear once the current item is hovered
		 *
		 * @name $.jstree.defaults.contextmenu.items
		 * @plugin contextmenu
		 */
		items : function (o, cb) { // Could be an object directly
			return {
				"create" : {
					"separator_before"	: false,
					"separator_after"	: true,
					"_disabled"			: false, //(this.check("create_node", data.reference, {}, "last")),
					"label"				: "Create",
					"action"			: function (data) {
						var inst = $.jstree.reference(data.reference),
							obj = inst.get_node(data.reference);
						inst.create_node(obj, {}, "last", function (new_node) {
							try {
								inst.edit(new_node);
							} catch (ex) {
								setTimeout(function () { inst.edit(new_node); },0);
							}
						});
					}
				},
				"rename" : {
					"separator_before"	: false,
					"separator_after"	: false,
					"_disabled"			: false, //(this.check("rename_node", data.reference, this.get_parent(data.reference), "")),
					"label"				: "Rename",
					/*!
					"shortcut"			: 113,
					"shortcut_label"	: 'F2',
					"icon"				: "glyphicon glyphicon-leaf",
					*/
					"action"			: function (data) {
						var inst = $.jstree.reference(data.reference),
							obj = inst.get_node(data.reference);
						inst.edit(obj);
					}
				},
				"remove" : {
					"separator_before"	: false,
					"icon"				: false,
					"separator_after"	: false,
					"_disabled"			: false, //(this.check("delete_node", data.reference, this.get_parent(data.reference), "")),
					"label"				: "Delete",
					"action"			: function (data) {
						var inst = $.jstree.reference(data.reference),
							obj = inst.get_node(data.reference);
						if(inst.is_selected(obj)) {
							inst.delete_node(inst.get_selected());
						}
						else {
							inst.delete_node(obj);
						}
					}
				},
				"ccp" : {
					"separator_before"	: true,
					"icon"				: false,
					"separator_after"	: false,
					"label"				: "Edit",
					"action"			: false,
					"submenu" : {
						"cut" : {
							"separator_before"	: false,
							"separator_after"	: false,
							"label"				: "Cut",
							"action"			: function (data) {
								var inst = $.jstree.reference(data.reference),
									obj = inst.get_node(data.reference);
								if(inst.is_selected(obj)) {
									inst.cut(inst.get_top_selected());
								}
								else {
									inst.cut(obj);
								}
							}
						},
						"copy" : {
							"separator_before"	: false,
							"icon"				: false,
							"separator_after"	: false,
							"label"				: "Copy",
							"action"			: function (data) {
								var inst = $.jstree.reference(data.reference),
									obj = inst.get_node(data.reference);
								if(inst.is_selected(obj)) {
									inst.copy(inst.get_top_selected());
								}
								else {
									inst.copy(obj);
								}
							}
						},
						"paste" : {
							"separator_before"	: false,
							"icon"				: false,
							"_disabled"			: function (data) {
								return !$.jstree.reference(data.reference).can_paste();
							},
							"separator_after"	: false,
							"label"				: "Paste",
							"action"			: function (data) {
								var inst = $.jstree.reference(data.reference),
									obj = inst.get_node(data.reference);
								inst.paste(obj);
							}
						}
					}
				}
			};
		}
	};

这里的create,rename,remove,ccp分别对应创建,重命名,删除,拖动, 可以按自己的需求自定义,

   $("#list").jstree({
        'core' : {
            'check_callback': true,
            'multiple' : false,
            'data' : {
                'url' : '/admin/category/tree?page='+ <?php echo $page; ?>+'&per-page='+<?php echo $perpage; ?>,
                'data' : function(node){
                    return {'id': node.categoryid}
                }
            },
            'themes': {
                'stripes': true,
                'variant': "large"
            }
        },
        "contextmenu": {
            select_node: false,
            show_at_node: true,
            items: {
                "新建分类": {
                    "label": "添加分类",
                    "icon": "glyphicon glyphicon-plus",
                    "action": function (data) {
                        var inst = $.jstree.reference(data.reference),
                            obj = inst.get_node(data.reference);
                        inst.create_node(obj, {}, "last", function (new_node) {
                            try {
                                new_node.text = "新建分类";
                                inst.edit(new_node);
                            } catch (ex) {
                                setTimeout(function () {
                                    inst.edit(new_node);
                                }, 0);
                            }
                        });
                    }
                },
                "修改分类":{
                    "separator_before"	: false,
                    "separator_after"	: false,
                    "_disabled"			: false, //(this.check("rename_node", data.reference, this.get_parent(data.reference), "")),
                    "label"				: "修改分类",
                    "shortcut_label"	: 'F2',
                    "icon"				: "glyphicon glyphicon-leaf",
                    "action"			: function (data) {
                        var inst = $.jstree.reference(data.reference),
                            obj = inst.get_node(data.reference);
                        inst.edit(obj);
                    }
                },
                "删除分类":{
                    "separator_before"	: false,
                    "icon"				: false,
                    "separator_after"	: false,
                    "_disabled"			: false, //(this.check("delete_node", data.reference, this.get_parent(data.reference), "")),
                    "label"				: "删除分类",
                    "icon"				:"glyphicon glyphicon-remove",
                    "action"			: function (data) {
                        var inst = $.jstree.reference(data.reference),
                            obj = inst.get_node(data.reference);
                        if(inst.is_selected(obj)) {
                            inst.delete_node(inst.get_selected());
                        }else {
                            inst.delete_node(obj);
                        }
                    }
                }
            },
        },
        'plugins' : [ 'contextmenu','search','state','types','wholerow']
    });

实现效果:
在这里插入图片描述
对于jstree其他更多功能,比如搜索,事件等, 如果api文档没有详细说明如何实现,都应该去查看源码,分析源码,然后实现功能.

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