11 KiB
currentMenu |
---|
options |
Documentation
Register new contextMenu
To register a new contextMenu:
$.contextMenu( options );
Options (at registration)
selector
The jQuery selector matching the elements to trigger on. This option is mandatory.
selector
: string
Example
$.contextMenu({
selector: 'span.context-menu'
});
items
Object with items to be listed in contextMenu. See items for a full documentation on how to build your menu items.
items
: object
Object containing items objects.
Example
$.contextMenu({
selector: '.context-menu',
items: {
copy: {
name: "Copy",
callback: function(key, opt){
alert("Clicked on " + key);
}
}
}
});
appendTo
Specifies the selctor string or DOMElement the generated menu is to be appended to.
appendTo
: string
or DOMElement
default: document.body
Example
// select the container with a selector
$.contextMenu({
selector: 'span.context-menu',
appendTo: 'div#context-menus-container'
});
// select the container with a dom element
var element = document.getElementById('#context-menus-container');
$.contextMenu({
selector: 'span.context-menu',
appendTo: element
});
trigger
Specifies what event on the element specified in the selector triggers the contextmenu.
appendTo
: string
default: 'right'
Value | Description |
---|---|
right |
Right mouse button |
left |
Left mouse button |
hover |
Hover the element |
none |
No trigger |
Example
// trigger with left mouse button
$.contextMenu({
selector: 'span.context-menu',
trigger: 'left'
});
// trigger on hover
var element = document.getElementById('#context-menus-container');
$.contextMenu({
selector: 'span.context-menu',
trigger: 'hover'
});
reposition
Specifies if a menu should be repositioned (true
) or rebuilt (false
) if a second trigger event (like a right click) is performed on the same element (or its children) while the menu is still visible.
reposition
: boolean
default: true
Value | Description |
---|---|
true |
Reposition menu when triggered |
false |
Rebuild menu when triggered |
Example
$.contextMenu({
selector: 'span.context-menu',
reposition: false
});
delay
Specifies the time in milliseconds to wait before showing the menu. Only applies to trigger: "hover"
delay
: int
default: 200
Example
$.contextMenu({
selector: 'span.context-menu',
delay: 500
});
autoHide
Specifies if the menu must be hidden when the mouse pointer is moved out of the trigger and menu items.
autoHide
: boolean
default: false
Value | Description |
---|---|
true |
Hide the menu on mouseout |
false |
Do not hide the menu on mouseout |
Example
$.contextMenu({
selector: 'span.context-menu',
autoHide: true
});
zIndex
Specifies the offset to add to the calculated zIndex of the trigger element. Set to 0
to prevent zIndex manipulation. Can be a function that returns an int to calculate the zIndex on build.
zIndex
: int
|function
default: 1
Example
$.contextMenu({
selector: 'span.context-menu',
zIndex: 10
});
$.contextMenu({
selector: 'span.context-menu',
zIndex: function($trigger, opt){
return 120;
});
className
Specifies additional classNames to add to the menu element. Seperate multiple classes by using spaces.
className
: string
Example
$.contextMenu({
selector: 'span.context-menu',
className: 'contextmenu-custom contextmenu-custom__highlight'
});
classNames
Specifies the base class names of the contextmenu elements. This can be used to change the class names of some classes that might conflict with frameworks like Bootstrap.
classNames
: object
// Classname configuration to be able avoid conflicts in frameworks
var options = {
classNames : {
hover: 'hover', // Item hover
disabled: 'disabled', // Item disabled
visible: 'visible', // Item visible
notSelectable: 'not-selectable', // Item not selectable
icon: 'context-menu-icon', // Base icon class
iconEdit: 'context-menu-icon-edit',
iconCut: 'context-menu-icon-cut',
iconCopy: 'context-menu-icon-copy',
iconPaste: 'context-menu-icon-paste',
iconDelete: 'context-menu-icon-delete',
iconAdd: 'context-menu-icon-add',
iconQuit: 'context-menu-icon-quit'
}
}
animation
Animation properties take effect on showing and hiding the menu. Duration specifies the duration of the animation in milliseconds. show
and hide
specify jQuery methods to show and hide elements.
animation
: object
default: {duration: 500, show: 'slideDown', hide: 'slideUp'}
Example
$.contextMenu({
selector: 'span.context-menu',
animation: `{duration: 250, show: 'fadeIn', hide: 'faseOut'}`
});
events
The show
and hide
events are triggered before the menu is shown or hidden. The event handlers are executed in the context of the triggering object. This will thus reference the jQuery handle of the trigger object.
A reference to the current options object is passed, the options object is a collection of current options and references to the DOM nodes of the menu. The event handlers may return false
to prevent the show
or hide
process.
events
: object
Value | Description |
---|---|
events.show |
Called before show of the contextmenu |
events.hide |
Called before hide of the contextmenu |
Example
$.contextMenu({
selector: 'span.context-menu',
events: {
show : function(options){
// Add class to the menu
this.addClass('currently-showing-menu');
// Show an alert with the selector of the menu
if( confirm('Open menu with selector ' + opt.selector + '?') === true ){
return true;
} else {
// Prevent the menu to be shown.
return false;
}
},
show : function(options){
if( confirm('Hide menu with selector ' + opt.selector + '?') === true ){
return true;
} else {
// Prevent the menu to be hidden.
return false;
}
}
});
position
Callback to overide how the position the context menu is de. The function is executed in the context of the trigger object.
The first argument is the $menu
jQuery object, which is the menu element. The second and third arguments are x
and y
coordinates provided by the show
event.
The x
and y
may either be integers denoting the offset from the top left corner, undefined
, or the string "maintain"
. If the string "maintain"
is provided, the current position of the $menu
must be used. If the coordinates are undefined
, appropriate coordinates must be determined. An example of how this can be achieved is provided with determinePosition.
position
: function(opt.$menu, x, y)
Value x or y |
Description |
---|---|
int |
Offset in pixels from top-left of trigger element. |
"maintain" |
Maintain current x or y coordinate |
undefined |
Unknown, determinePosition is called. |
Example
$.contextMenu({
selector: 'span.context-menu',
position: function(opt, x, y){
opt.$menu.css({top: 123, left: 123});
}
});
determinePosition
Determine the position of the menu in respect to the given trigger object, this function is called when there is no x
and y
set on the position call.
determinePosition
: function(opt.$menu)
Example
$.contextMenu({
selector: 'span.context-menu',
determinePosition: function($menu){
// Position using jQuery.ui.position
// http://api.jqueryui.com/position/
$menu.css('display', 'block')
.position({ my: "center top", at: "center bottom", of: this, offset: "0 5"})
.css('display', 'none');
}
});
callback
Specifies the default callback to be used in case an item does not expose its own callback. The default callback behaves just like item.callback.
callback
: function(itemKey, opt)
Example
$.contextMenu({
selector: 'span.context-menu',
callback: function(itemKey, opt){
// Alert the key of the item and the trigger element's id.
alert("Clicked on " + itemKey + " on element " + opt.$trigger.attr("id"));
// Do not close the menu after clicking an item
return false;
}
});
build
The callback is executed with two arguments given: the jQuery reference to the triggering element and the original contextemnu event. It is executed without context (so this won't refer to anything useful).
If the build callback is found at registration, the menu is not built right away. The menu creation is delayed to the point where the menu is actually called to show. Dynamic menus don't stay in the DOM. After a menu created with build is hidden, its DOM-footprint is destroyed.
With build, only the options selector and trigger may be specified in the options object. All other options need to be returned from the build callback.
the build callback may return a boolean false to signal contextMenu to not display a context menu
build
: function($triggerElement, event)
Example
$.contextMenu({
selector: 'span.context-menu',
build: function($triggerElement, e){
return {
callback: function(){},
items: {
menuItem: {name: "My on demand menu item"}
}
};
}
});