Given the jQuery dropdown plugin below. Is there a way to add a method that would allow for a separate function outside of the dropdown to 'hideMenu'? Thanks
For example, if I applied the plugin to a div with an ID like so:
$('#settings.dropdown').dropDownMenu();
How could I then call to close the dropDownMenu w hideMenu from outside of the plugin? Thanks
jQuery.fn.dropDownMenu = function() {
// Apply the Dropdown
return this.each(function() {
var dropdown = $(this),
menu = dropdown.next('div.dropdown-menu'),
parent = dropdown.parent();
// For keeping track of what's "open"
var activeClass = 'dropdown-active',
showingDropdown = false,
showingMenu,
showingParent,
opening;
// Dropdown Click to Open
dropdown.click(function(e) {
opening = true; // Track opening so that the body click doesn't close. This allows other js views to bind to the click
e.preventDefault();
if (showingDropdown) {
dropdown.removeClass(activeClass);
parent.removeClass(activeClass);
showingMenu.hide();
showingDropdown = false;
} else {
showingDropdown = true;
showingMenu = menu;
showingParent = parent;
menu.show();
dropdown.addClass(activeClass);
parent.addClass(activeClass);
}
});
// When you click anywhere on the page, we detect if we need to blur the Dropdown Menu
$('body').click(function(e) {
if (!opening && showingParent) {
var parentElement = showingParent[0];
if (!$.contains(parentElement, e.target) || !parentElement == e.target) {
hideMenu();
}
}
opening = false;
});
// hides the current menu
var hideMenu = function() {
if(showingDropdown) {
showingDropdown = false;
dropdown.removeClass(activeClass);
parent.removeClass(activeClass);
showingMenu.hide();
}
};
});
};
jQuery advises making multiple methods available through the plugin itself:
jQuery.fn.dropDownMenu = function(method) {
var methods = {
init: function() {
// Put all your init code here
},
hide: function() {
hideMenu();
}
};
if ( methods[method] ) {
return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof method === 'object' || ! method ) {
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + method + ' does not exist on jQuery.tooltip' );
}
function hideMenu() {
// ...
}
};
See http://docs.jquery.com/Plugins/Authoring#Plugin_Methods
Update: Use like this:
// Use the plugin normally to run the init method
$('#settings.dropdown').dropDownMenu();
// Call the hide method
$('#settings.dropdown').dropDownMenu('hide');
Sure. Give hideMenu
to the global window object, like this:
window["hideMenu"] = function() {
if(showingDropdown) {
showingDropdown = false;
dropdown.removeClass(activeClass);
parent.removeClass(activeClass);
showingMenu.hide();
}
};
You can then call it as usual anywhere you need to.
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