Commit 3bc5c5b3 authored by Leigh B Stoller's avatar Leigh B Stoller
Browse files
parent f470eedd
/*!
* Bootstrap Context Menu
* Author: @sydcanem
* https://github.com/sydcanem/bootstrap-contextmenu
*
* Inspired by Bootstrap's dropdown plugin.
* Bootstrap (http://getbootstrap.com).
*
* Licensed under MIT
* ========================================================= */
;(function($) {
'use strict';
/* CONTEXTMENU CLASS DEFINITION
* ============================ */
var toggle = '[data-toggle="context"]';
var ContextMenu = function (element, options) {
this.$element = $(element);
this.before = options.before || this.before;
this.onItem = options.onItem || this.onItem;
this.scopes = options.scopes || null;
if (options.target) {
this.$element.data('target', options.target);
}
this.listen();
};
ContextMenu.prototype = {
constructor: ContextMenu
,show: function(e) {
var $menu
, evt
, tp
, items
, relatedTarget = { relatedTarget: this, target: e.currentTarget };
if (this.isDisabled()) return;
this.closemenu();
if (!this.before.call(this,e,$(e.currentTarget))) return;
$menu = this.getMenu();
$menu.trigger(evt = $.Event('show.bs.context', relatedTarget));
tp = this.getPosition(e, $menu);
items = 'li:not(.divider)';
$menu.attr('style', '')
.css(tp)
.addClass('open')
.on('click.context.data-api', items, $.proxy(this.onItem, this, $(e.currentTarget)))
.trigger('shown.bs.context', relatedTarget);
// Delegating the `closemenu` only on the currently opened menu.
// This prevents other opened menus from closing.
$('html')
.on('click.context.data-api', $menu.selector, $.proxy(this.closemenu, this));
return false;
}
,closemenu: function(e) {
var $menu
, evt
, items
, relatedTarget;
$menu = this.getMenu();
if(!$menu.hasClass('open')) return;
relatedTarget = { relatedTarget: this };
$menu.trigger(evt = $.Event('hide.bs.context', relatedTarget));
items = 'li:not(.divider)';
$menu.removeClass('open')
.off('click.context.data-api', items)
.trigger('hidden.bs.context', relatedTarget);
$('html')
.off('click.context.data-api', $menu.selector);
// Don't propagate click event so other currently
// opened menus won't close.
return false;
}
,keydown: function(e) {
if (e.which == 27) this.closemenu(e);
}
,before: function(e) {
return true;
}
,onItem: function(e) {
return true;
}
,listen: function () {
this.$element.on('contextmenu.context.data-api', this.scopes, $.proxy(this.show, this));
$('html').on('click.context.data-api', $.proxy(this.closemenu, this));
$('html').on('keydown.context.data-api', $.proxy(this.keydown, this));
}
,destroy: function() {
this.$element.off('.context.data-api').removeData('context');
$('html').off('.context.data-api');
}
,isDisabled: function() {
return this.$element.hasClass('disabled') ||
this.$element.attr('disabled');
}
,getMenu: function () {
var selector = this.$element.data('target')
, $menu;
if (!selector) {
selector = this.$element.attr('href');
selector = selector && selector.replace(/.*(?=#[^\s]*$)/, ''); //strip for ie7
}
$menu = $(selector);
return $menu && $menu.length ? $menu : this.$element.find(selector);
}
,getPosition: function(e, $menu) {
var mouseX = e.clientX
, mouseY = e.clientY
, boundsX = $(window).width()
, boundsY = $(window).height()
, menuWidth = $menu.find('.dropdown-menu').outerWidth()
, menuHeight = $menu.find('.dropdown-menu').outerHeight()
, tp = {"position":"absolute","z-index":9999}
, Y, X, parentOffset;
if (mouseY + menuHeight > boundsY) {
Y = {"top": mouseY - menuHeight + $(window).scrollTop()};
} else {
Y = {"top": mouseY + $(window).scrollTop()};
}
if ((mouseX + menuWidth > boundsX) && ((mouseX - menuWidth) > 0)) {
X = {"left": mouseX - menuWidth + $(window).scrollLeft()};
} else {
X = {"left": mouseX + $(window).scrollLeft()};
}
// If context-menu's parent is positioned using absolute or relative positioning,
// the calculated mouse position will be incorrect.
// Adjust the position of the menu by its offset parent position.
parentOffset = $menu.offsetParent().offset();
X.left = X.left - parentOffset.left;
Y.top = Y.top - parentOffset.top;
return $.extend(tp, Y, X);
}
};
/* CONTEXT MENU PLUGIN DEFINITION
* ========================== */
$.fn.contextmenu = function (option,e) {
return this.each(function () {
var $this = $(this)
, data = $this.data('context')
, options = (typeof option == 'object') && option;
if (!data) $this.data('context', (data = new ContextMenu($this, options)));
if (typeof option == 'string') data[option].call(data, e);
});
};
$.fn.contextmenu.Constructor = ContextMenu;
/* APPLY TO STANDARD CONTEXT MENU ELEMENTS
* =================================== */
$(document)
.on('contextmenu.context.data-api', function() {
$(toggle).each(function () {
var data = $(this).data('context');
if (!data) return;
data.closemenu();
});
})
.on('contextmenu.context.data-api', toggle, function(e) {
$(this).contextmenu('show', e);
e.preventDefault();
e.stopPropagation();
});
}(jQuery));
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