plugin install

wp/wp-content/plugins/gravityforms/js/gforms_hooks.js

@@ -0,0 +1,92 @@
+
+//----------------------------------------------------------
+//------ JAVASCRIPT HOOK FUNCTIONS FOR GRAVITY FORMS -------
+//----------------------------------------------------------
+
+if ( ! gform ) {
+	document.addEventListener( 'gform_main_scripts_loaded', function() { gform.scriptsLoaded = true; } );
+	window.addEventListener( 'DOMContentLoaded', function() { gform.domLoaded = true; } );
+
+	var gform = {
+		domLoaded: false,
+		scriptsLoaded: false,
+		initializeOnLoaded: function( fn ) {
+			if ( gform.domLoaded && gform.scriptsLoaded ) {
+				fn();
+			} else if( ! gform.domLoaded && gform.scriptsLoaded ) {
+				window.addEventListener( 'DOMContentLoaded', fn );
+			} else {
+				document.addEventListener( 'gform_main_scripts_loaded', fn );
+			}
+		},
+		hooks: { action: {}, filter: {} },
+		addAction: function( action, callable, priority, tag ) {
+			gform.addHook( 'action', action, callable, priority, tag );
+		},
+		addFilter: function( action, callable, priority, tag ) {
+			gform.addHook( 'filter', action, callable, priority, tag );
+		},
+		doAction: function( action ) {
+			gform.doHook( 'action', action, arguments );
+		},
+		applyFilters: function( action ) {
+			return gform.doHook( 'filter', action, arguments );
+		},
+		removeAction: function( action, tag ) {
+			gform.removeHook( 'action', action, tag );
+		},
+		removeFilter: function( action, priority, tag ) {
+			gform.removeHook( 'filter', action, priority, tag );
+		},
+		addHook: function( hookType, action, callable, priority, tag ) {
+			if ( undefined == gform.hooks[hookType][action] ) {
+				gform.hooks[hookType][action] = [];
+			}
+			var hooks = gform.hooks[hookType][action];
+			if ( undefined == tag ) {
+				tag = action + '_' + hooks.length;
+			}
+			if( priority == undefined ){
+				priority = 10;
+			}
+
+			gform.hooks[hookType][action].push( { tag:tag, callable:callable, priority:priority } );
+		},
+		doHook: function( hookType, action, args ) {
+
+			// splice args from object into array and remove first index which is the hook name
+			args = Array.prototype.slice.call(args, 1);
+
+			if ( undefined != gform.hooks[hookType][action] ) {
+				var hooks = gform.hooks[hookType][action], hook;
+				//sort by priority
+				hooks.sort(function(a,b){return a["priority"]-b["priority"]});
+
+				hooks.forEach( function( hookItem ) {
+					hook = hookItem.callable;
+
+					if(typeof hook != 'function')
+						hook = window[hook];
+					if ( 'action' == hookType ) {
+						hook.apply(null, args);
+					} else {
+						args[0] = hook.apply(null, args);
+					}
+				} );
+			}
+			if ( 'filter'==hookType ) {
+				return args[0];
+			}
+		},
+		removeHook: function( hookType, action, priority, tag ) {
+			if ( undefined != gform.hooks[hookType][action] ) {
+				var hooks = gform.hooks[hookType][action];
+				hooks = hooks.filter( function(hook, index, arr) {
+					var removeHook = (undefined==tag||tag==hook.tag) && (undefined==priority||priority==hook.priority);
+					return !removeHook;
+				} );
+				gform.hooks[hookType][action] = hooks;
+			}
+		}
+	};
+}