jstree.contextmenu.js

/**
 * ### Contextmenu plugin
 *
 * Shows a context menu when a node is right-clicked.
 */
/*globals jQuery, define, exports, require, document */
(function (factory) {
	"use strict";
	if (typeof define === 'function' && define.amd) {
		define('jstree.contextmenu', ['jquery','./jstree.js'], factory);
	}
	else if(typeof exports === 'object') {
		factory(require('jquery'), require('./jstree.js'));
	}
	else {
		factory(jQuery, jQuery.jstree);
	}
}(function ($, jstree, undefined) {
	"use strict";

	if($.jstree.plugins.contextmenu) { return; }

	/**
	 * stores all defaults for the contextmenu plugin
	 * @name $.jstree.defaults.contextmenu
	 * @plugin contextmenu
	 */
	$.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);
							}
						}
					}
				}
			};
		}
	};

	$.jstree.plugins.contextmenu = function (options, parent) {
		this.bind = function () {
			parent.bind.call(this);

			var last_ts = 0, cto = null, ex, ey;
			this.element
				.on("init.jstree loading.jstree ready.jstree", function () {
						this.get_container_ul().addClass('jstree-contextmenu');
					}.bind(this))
				.on("contextmenu.jstree", ".jstree-anchor", function (e, data) {
						if (e.target.tagName.toLowerCase() === 'input') {
							return;
						}
						e.preventDefault();
						last_ts = e.ctrlKey ? +new Date() : 0;
						if(data || cto) {
							last_ts = (+new Date()) + 10000;
						}
						if(cto) {
							clearTimeout(cto);
						}
						if(!this.is_loading(e.currentTarget)) {
							this.show_contextmenu(e.currentTarget, e.pageX, e.pageY, e);
						}
					}.bind(this))
				.on("click.jstree", ".jstree-anchor", function (e) {
						if(this._data.contextmenu.visible && (!last_ts || (+new Date()) - last_ts > 250)) { // work around safari & macOS ctrl+click
							$.vakata.context.hide();
						}
						last_ts = 0;
					}.bind(this))
				.on("touchstart.jstree", ".jstree-anchor", function (e) {
						if(!e.originalEvent || !e.originalEvent.changedTouches || !e.originalEvent.changedTouches[0]) {
							return;
						}
						ex = e.originalEvent.changedTouches[0].clientX;
						ey = e.originalEvent.changedTouches[0].clientY;
						cto = setTimeout(function () {
							$(e.currentTarget).trigger('contextmenu', true);
						}, 750);
					})
				.on('touchmove.vakata.jstree', function (e) {
						if(cto && e.originalEvent && e.originalEvent.changedTouches && e.originalEvent.changedTouches[0] && (Math.abs(ex - e.originalEvent.changedTouches[0].clientX) > 10 || Math.abs(ey - e.originalEvent.changedTouches[0].clientY) > 10)) {
							clearTimeout(cto);
							$.vakata.context.hide();
						}
					})
				.on('touchend.vakata.jstree', function (e) {
						if(cto) {
							clearTimeout(cto);
						}
					});

			/*!
			if(!('oncontextmenu' in document.body) && ('ontouchstart' in document.body)) {
				var el = null, tm = null;
				this.element
					.on("touchstart", ".jstree-anchor", function (e) {
						el = e.currentTarget;
						tm = +new Date();
						$(document).one("touchend", function (e) {
							e.target = document.elementFromPoint(e.originalEvent.targetTouches[0].pageX - window.pageXOffset, e.originalEvent.targetTouches[0].pageY - window.pageYOffset);
							e.currentTarget = e.target;
							tm = ((+(new Date())) - tm);
							if(e.target === el && tm > 600 && tm < 1000) {
								e.preventDefault();
								$(el).trigger('contextmenu', e);
							}
							el = null;
							tm = null;
						});
					});
			}
			*/
			$(document).on("context_hide.vakata.jstree", function (e, data) {
				this._data.contextmenu.visible = false;
				$(data.reference).removeClass('jstree-context');
			}.bind(this));
		};
		this.teardown = function () {
			if(this._data.contextmenu.visible) {
				$.vakata.context.hide();
			}
			$(document).off("context_hide.vakata.jstree");
			parent.teardown.call(this);
		};

		/**
		 * prepare and show the context menu for a node
		 * @name show_contextmenu(obj [, x, y])
		 * @param {mixed} obj the node
		 * @param {Number} x the x-coordinate relative to the document to show the menu at
		 * @param {Number} y the y-coordinate relative to the document to show the menu at
		 * @param {Object} e the event if available that triggered the contextmenu
		 * @plugin contextmenu
		 * @trigger show_contextmenu.jstree
		 */
		this.show_contextmenu = function (obj, x, y, e) {
			obj = this.get_node(obj);
			if(!obj || obj.id === $.jstree.root) { return false; }
			var s = this.settings.contextmenu,
				d = this.get_node(obj, true),
				a = d.children(".jstree-anchor"),
				o = false,
				i = false;
			if(s.show_at_node || x === undefined || y === undefined) {
				o = a.offset();
				x = o.left;
				y = o.top + this._data.core.li_height;
			}
			if(this.settings.contextmenu.select_node && !this.is_selected(obj)) {
				this.activate_node(obj, e);
			}

			i = s.items;
			if($.vakata.is_function(i)) {
				i = i.call(this, obj, function (i) {
					this._show_contextmenu(obj, x, y, i);
				}.bind(this));
			}
			if($.isPlainObject(i)) {
				this._show_contextmenu(obj, x, y, i);
			}
		};
		/**
		 * show the prepared context menu for a node
		 * @name _show_contextmenu(obj, x, y, i)
		 * @param {mixed} obj the node
		 * @param {Number} x the x-coordinate relative to the document to show the menu at
		 * @param {Number} y the y-coordinate relative to the document to show the menu at
		 * @param {Number} i the object of items to show
		 * @plugin contextmenu
		 * @trigger show_contextmenu.jstree
		 * @private
		 */
		this._show_contextmenu = function (obj, x, y, i) {
			var d = this.get_node(obj, true),
				a = d.children(".jstree-anchor");
			$(document).one("context_show.vakata.jstree", function (e, data) {
				var cls = 'jstree-contextmenu jstree-' + this.get_theme() + '-contextmenu';
				$(data.element).addClass(cls);
				a.addClass('jstree-context');
			}.bind(this));
			this._data.contextmenu.visible = true;
			$.vakata.context.show(a, { 'x' : x, 'y' : y }, i);
			/**
			 * triggered when the contextmenu is shown for a node
			 * @event
			 * @name show_contextmenu.jstree
			 * @param {Object} node the node
			 * @param {Number} x the x-coordinate of the menu relative to the document
			 * @param {Number} y the y-coordinate of the menu relative to the document
			 * @plugin contextmenu
			 */
			this.trigger('show_contextmenu', { "node" : obj, "x" : x, "y" : y });
		};
	};

	// contextmenu helper
	(function ($) {
		var right_to_left = false,
			vakata_context = {
				element		: false,
				reference	: false,
				position_x	: 0,
				position_y	: 0,
				items		: [],
				html		: "",
				is_visible	: false
			};

		$.vakata.context = {
			settings : {
				hide_onmouseleave	: 0,
				icons				: true
			},
			_trigger : function (event_name) {
				$(document).triggerHandler("context_" + event_name + ".vakata", {
					"reference"	: vakata_context.reference,
					"element"	: vakata_context.element,
					"position"	: {
						"x" : vakata_context.position_x,
						"y" : vakata_context.position_y
					}
				});
			},
			_execute : function (i) {
				i = vakata_context.items[i];
				return i && (!i._disabled || ($.vakata.is_function(i._disabled) && !i._disabled({ "item" : i, "reference" : vakata_context.reference, "element" : vakata_context.element }))) && i.action ? i.action.call(null, {
							"item"		: i,
							"reference"	: vakata_context.reference,
							"element"	: vakata_context.element,
							"position"	: {
								"x" : vakata_context.position_x,
								"y" : vakata_context.position_y
							}
						}) : false;
			},
			_parse : function (o, is_callback) {
				if(!o) { return false; }
				if(!is_callback) {
					vakata_context.html		= "";
					vakata_context.items	= [];
				}
				var str = "",
					sep = false,
					tmp;

				if(is_callback) { str += "<"+"ul>"; }
				$.each(o, function (i, val) {
					if(!val) { return true; }
					vakata_context.items.push(val);
					if(!sep && val.separator_before) {
						str += "<"+"li class='vakata-context-separator'><"+"a href='#' " + ($.vakata.context.settings.icons ? '' : 'class="vakata-context-no-icons"') + ">&#160;<"+"/a><"+"/li>";
					}
					sep = false;
					str += "<"+"li class='" + (val._class || "") + (val._disabled === true || ($.vakata.is_function(val._disabled) && val._disabled({ "item" : val, "reference" : vakata_context.reference, "element" : vakata_context.element })) ? " vakata-contextmenu-disabled " : "") + "' "+(val.shortcut?" data-shortcut='"+val.shortcut+"' ":'')+">";
					str += "<"+"a href='#' rel='" + (vakata_context.items.length - 1) + "' " + (val.title ? "title='" + val.title + "'" : "") + ">";
					if($.vakata.context.settings.icons) {
						str += "<"+"i ";
						if(val.icon) {
							if(val.icon.indexOf("/") !== -1 || val.icon.indexOf(".") !== -1) { str += " style='background:url(\"" + val.icon + "\") center center no-repeat' "; }
							else { str += " class='" + val.icon + "' "; }
						}
						str += "><"+"/i><"+"span class='vakata-contextmenu-sep'>&#160;<"+"/span>";
					}
					str += ($.vakata.is_function(val.label) ? val.label({ "item" : i, "reference" : vakata_context.reference, "element" : vakata_context.element }) : val.label) + (val.shortcut?' <span class="vakata-contextmenu-shortcut vakata-contextmenu-shortcut-'+val.shortcut+'">'+ (val.shortcut_label || '') +'</span>':'') + "<"+"/a>";
					if(val.submenu) {
						tmp = $.vakata.context._parse(val.submenu, true);
						if(tmp) { str += tmp; }
					}
					str += "<"+"/li>";
					if(val.separator_after) {
						str += "<"+"li class='vakata-context-separator'><"+"a href='#' " + ($.vakata.context.settings.icons ? '' : 'class="vakata-context-no-icons"') + ">&#160;<"+"/a><"+"/li>";
						sep = true;
					}
				});
				str  = str.replace(/<li class\='vakata-context-separator'\><\/li\>$/,"");
				if(is_callback) { str += "</ul>"; }
				/**
				 * triggered on the document when the contextmenu is parsed (HTML is built)
				 * @event
				 * @plugin contextmenu
				 * @name context_parse.vakata
				 * @param {jQuery} reference the element that was right clicked
				 * @param {jQuery} element the DOM element of the menu itself
				 * @param {Object} position the x & y coordinates of the menu
				 */
				if(!is_callback) { vakata_context.html = str; $.vakata.context._trigger("parse"); }
				return str.length > 10 ? str : false;
			},
			_show_submenu : function (o) {
				o = $(o);
				if(!o.length || !o.children("ul").length) { return; }
				var e = o.children("ul"),
					xl = o.offset().left,
					x = xl + o.outerWidth(),
					y = o.offset().top,
					w = e.width(),
					h = e.height(),
					dw = $(window).width() + $(window).scrollLeft(),
					dh = $(window).height() + $(window).scrollTop();
				// може да се спести е една проверка - дали няма някой от класовете вече нагоре
				if(right_to_left) {
					o[x - (w + 10 + o.outerWidth()) < 0 ? "addClass" : "removeClass"]("vakata-context-left");
				}
				else {
					o[x + w > dw  && xl > dw - x ? "addClass" : "removeClass"]("vakata-context-right");
				}
				if(y + h + 10 > dh) {
					e.css("bottom","-1px");
				}

				//if does not fit - stick it to the side
				if (o.hasClass('vakata-context-right')) {
					if (xl < w) {
						e.css("margin-right", xl - w);
					}
				} else {
					if (dw - x < w) {
						e.css("margin-left", dw - x - w);
					}
				}

				e.show();
			},
			show : function (reference, position, data) {
				var o, e, x, y, w, h, dw, dh, cond = true;
				if(vakata_context.element && vakata_context.element.length) {
					vakata_context.element.width('');
				}
				switch(cond) {
					case (!position && !reference):
						return false;
					case (!!position && !!reference):
						vakata_context.reference	= reference;
						vakata_context.position_x	= position.x;
						vakata_context.position_y	= position.y;
						break;
					case (!position && !!reference):
						vakata_context.reference	= reference;
						o = reference.offset();
						vakata_context.position_x	= o.left + reference.outerHeight();
						vakata_context.position_y	= o.top;
						break;
					case (!!position && !reference):
						vakata_context.position_x	= position.x;
						vakata_context.position_y	= position.y;
						break;
				}
				if(!!reference && !data && $(reference).data('vakata_contextmenu')) {
					data = $(reference).data('vakata_contextmenu');
				}
				if($.vakata.context._parse(data)) {
					vakata_context.element.html(vakata_context.html);
				}
				if(vakata_context.items.length) {
					vakata_context.element.appendTo(document.body);
					e = vakata_context.element;
					x = vakata_context.position_x;
					y = vakata_context.position_y;
					w = e.width();
					h = e.height();
					dw = $(window).width() + $(window).scrollLeft();
					dh = $(window).height() + $(window).scrollTop();
					if(right_to_left) {
						x -= (e.outerWidth() - $(reference).outerWidth());
						if(x < $(window).scrollLeft() + 20) {
							x = $(window).scrollLeft() + 20;
						}
					}
					if(x + w + 20 > dw) {
						x = dw - (w + 20);
					}
					if(y + h + 20 > dh) {
						y = dh - (h + 20);
					}

					vakata_context.element
						.css({ "left" : x, "top" : y })
						.show()
						.find('a').first().trigger('focus').parent().addClass("vakata-context-hover");
					vakata_context.is_visible = true;
					/**
					 * triggered on the document when the contextmenu is shown
					 * @event
					 * @plugin contextmenu
					 * @name context_show.vakata
					 * @param {jQuery} reference the element that was right clicked
					 * @param {jQuery} element the DOM element of the menu itself
					 * @param {Object} position the x & y coordinates of the menu
					 */
					$.vakata.context._trigger("show");
				}
			},
			hide : function () {
				if(vakata_context.is_visible) {
					vakata_context.element.hide().find("ul").hide().end().find(':focus').trigger('blur').end().detach();
					vakata_context.is_visible = false;
					/**
					 * triggered on the document when the contextmenu is hidden
					 * @event
					 * @plugin contextmenu
					 * @name context_hide.vakata
					 * @param {jQuery} reference the element that was right clicked
					 * @param {jQuery} element the DOM element of the menu itself
					 * @param {Object} position the x & y coordinates of the menu
					 */
					$.vakata.context._trigger("hide");
				}
			}
		};
		$(function () {
			right_to_left = $(document.body).css("direction") === "rtl";
			var to = false;

			vakata_context.element = $("<ul class='vakata-context'></ul>");
			vakata_context.element
				.on("mouseenter", "li", function (e) {
					e.stopImmediatePropagation();

					if($.contains(this, e.relatedTarget)) {
						// премахнато заради delegate mouseleave по-долу
						// $(this).find(".vakata-context-hover").removeClass("vakata-context-hover");
						return;
					}

					if(to) { clearTimeout(to); }
					vakata_context.element.find(".vakata-context-hover").removeClass("vakata-context-hover").end();

					$(this)
						.siblings().find("ul").hide().end().end()
						.parentsUntil(".vakata-context", "li").addBack().addClass("vakata-context-hover");
					$.vakata.context._show_submenu(this);
				})
				// тестово - дали не натоварва?
				.on("mouseleave", "li", function (e) {
					if($.contains(this, e.relatedTarget)) { return; }
					$(this).find(".vakata-context-hover").addBack().removeClass("vakata-context-hover");
				})
				.on("mouseleave", function (e) {
					$(this).find(".vakata-context-hover").removeClass("vakata-context-hover");
					if($.vakata.context.settings.hide_onmouseleave) {
						to = setTimeout(
							(function (t) {
								return function () { $.vakata.context.hide(); };
							}(this)), $.vakata.context.settings.hide_onmouseleave);
					}
				})
				.on("click", "a", function (e) {
					e.preventDefault();
				//})
				//.on("mouseup", "a", function (e) {
					if(!$(this).trigger('blur').parent().hasClass("vakata-context-disabled") && $.vakata.context._execute($(this).attr("rel")) !== false) {
						$.vakata.context.hide();
					}
				})
				.on('keydown', 'a', function (e) {
						var o = null;
						switch(e.which) {
							case 13:
							case 32:
								e.type = "click";
								e.preventDefault();
								$(e.currentTarget).trigger(e);
								break;
							case 37:
								if(vakata_context.is_visible) {
									vakata_context.element.find(".vakata-context-hover").last().closest("li").first().find("ul").hide().find(".vakata-context-hover").removeClass("vakata-context-hover").end().end().children('a').trigger('focus');
									e.stopImmediatePropagation();
									e.preventDefault();
								}
								break;
							case 38:
								if(vakata_context.is_visible) {
									o = vakata_context.element.find("ul:visible").addBack().last().children(".vakata-context-hover").removeClass("vakata-context-hover").prevAll("li:not(.vakata-context-separator)").first();
									if(!o.length) { o = vakata_context.element.find("ul:visible").addBack().last().children("li:not(.vakata-context-separator)").last(); }
									o.addClass("vakata-context-hover").children('a').trigger('focus');
									e.stopImmediatePropagation();
									e.preventDefault();
								}
								break;
							case 39:
								if(vakata_context.is_visible) {
									vakata_context.element.find(".vakata-context-hover").last().children("ul").show().children("li:not(.vakata-context-separator)").removeClass("vakata-context-hover").first().addClass("vakata-context-hover").children('a').trigger('focus');
									e.stopImmediatePropagation();
									e.preventDefault();
								}
								break;
							case 40:
								if(vakata_context.is_visible) {
									o = vakata_context.element.find("ul:visible").addBack().last().children(".vakata-context-hover").removeClass("vakata-context-hover").nextAll("li:not(.vakata-context-separator)").first();
									if(!o.length) { o = vakata_context.element.find("ul:visible").addBack().last().children("li:not(.vakata-context-separator)").first(); }
									o.addClass("vakata-context-hover").children('a').trigger('focus');
									e.stopImmediatePropagation();
									e.preventDefault();
								}
								break;
							case 27:
								$.vakata.context.hide();
								e.preventDefault();
								break;
							default:
								//console.log(e.which);
								break;
						}
					})
				.on('keydown', function (e) {
					e.preventDefault();
					var a = vakata_context.element.find('.vakata-contextmenu-shortcut-' + e.which).parent();
					if(a.parent().not('.vakata-context-disabled')) {
						a.trigger('click');
					}
				});

			$(document)
				.on("mousedown.vakata.jstree", function (e) {
					if(vakata_context.is_visible && vakata_context.element[0] !== e.target  && !$.contains(vakata_context.element[0], e.target)) {
						$.vakata.context.hide();
					}
				})
				.on("context_show.vakata.jstree", function (e, data) {
					vakata_context.element.find("li:has(ul)").children("a").addClass("vakata-context-parent");
					if(right_to_left) {
						vakata_context.element.addClass("vakata-context-rtl").css("direction", "rtl");
					}
					// also apply a RTL class?
					vakata_context.element.find("ul").hide().end();
				});
		});
	}($));
	// $.jstree.defaults.plugins.push("contextmenu");
}));