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/** |
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* Manage event callbacks. |
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Allow add/remove a callback function into custom event of an object. |
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* |
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* @class |
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* @param self |
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*/ |
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const Event_Callback = function Event_Callback( self ) { |
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const callbacks = {}; |
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const $ = window.jQuery; |
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|
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this.on = function( event, callback ) { |
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let namespaces = event.split( '.' ), |
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namespace = ''; |
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|
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if ( namespaces.length > 1 ) { |
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event = namespaces[ 0 ]; |
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namespace = namespaces[ 1 ]; |
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} |
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|
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if ( ! callbacks[ event ] ) { |
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callbacks[ event ] = [ [], {} ]; |
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} |
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|
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if ( namespace ) { |
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if ( ! callbacks[ event ][ 1 ][ namespace ] ) { |
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callbacks[ event ][ 1 ][ namespace ] = []; |
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} |
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callbacks[ event ][ 1 ][ namespace ].push( callback ); |
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} else { |
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callbacks[ event ][ 0 ].push( callback ); |
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} |
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|
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return self; |
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}; |
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|
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this.off = function( event, callback ) { |
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let namespaces = event.split( '.' ), |
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namespace = ''; |
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|
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if ( namespaces.length > 1 ) { |
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event = namespaces[ 0 ]; |
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namespace = namespaces[ 1 ]; |
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} |
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|
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if ( ! callbacks[ event ] ) { |
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return self; |
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} |
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let at = -1; |
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if ( ! namespace ) { |
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if ( typeof callback === 'function' ) { |
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at = callbacks[ event ][ 0 ].indexOf( callback ); |
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if ( at < 0 ) { |
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return self; |
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} |
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callbacks[ event ][ 0 ].splice( at, 1 ); |
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} else { |
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callbacks[ event ][ 0 ] = []; |
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} |
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} else { |
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if ( ! callbacks[ event ][ 1 ][ namespace ] ) { |
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return self; |
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} |
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|
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if ( typeof callback === 'function' ) { |
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at = callbacks[ event ][ 1 ][ namespace ].indexOf( callback ); |
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if ( at < 0 ) { |
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return self; |
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} |
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callbacks[ event ][ 1 ][ namespace ].splice( at, 1 ); |
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} else { |
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callbacks[ event ][ 1 ][ namespace ] = []; |
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} |
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} |
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|
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return self; |
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}; |
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|
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this.callEvent = function( event, callbackArgs ) { |
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if ( ! callbacks[ event ] ) { |
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return; |
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} |
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|
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if ( callbacks[ event ][ 0 ] ) { |
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for ( var i = 0; i < callbacks[ event ][ 0 ].length; i++ ) { |
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typeof ( callbacks[ event ][ 0 ][ i ] ) === 'function' && callbacks[ event ][ i ][ 0 ].apply( self, callbackArgs ); |
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} |
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} |
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|
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if ( callbacks[ event ][ 1 ] ) { |
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for ( var i in callbacks[ event ][ 1 ] ) { |
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for ( let j = 0; j < callbacks[ event ][ 1 ][ i ].length; j++ ) { |
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typeof ( callbacks[ event ][ 1 ][ i ][ j ] ) === 'function' && callbacks[ event ][ 1 ][ i ][ j ].apply( self, callbackArgs ); |
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} |
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} |
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} |
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}; |
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}; |
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|
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export default Event_Callback; |
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