cytoscape-undo-redo

Description

A Cytsocape.js extension to control actions on Cytoscape.js graph, also providing built-in functionalities for common Cytoscape.js operations like dragging nodes, adding/removing nodes, etc. distributed under The MIT License.

Please cite the following paper when using this extension:

U. Dogrusoz , A. Karacelik, I. Safarli, H. Balci, L. Dervishi, and M.C. Siper, "Efficient methods and readily customizable libraries for managing complexity of large networks", PLoS ONE, 13(5): e0197238, 2018.

Demo

Click here for demo

API

```javascript var cy = cytoscape({...});

var ur = cy.undoRedo(options);

```

cy.undoRedo(options, dontInit) Sets options. Also, dontInit can be left blank and is to be used in extensions to set default actions of an extension.

ur.action( actionName, actionFunction, undoFunction) Register action with its undo function & action name. actionFunction's return value will be used to call undoFunction by argument and vice versa. This function is chainable: ur.action(...).action(...)

ur.do(actionName, args) Calls registered function with action name actionName via actionFunction(args) * args.firstTime is reserved. The reason behind is on first call of actionFunction takes a parameter with property args.firstTime = true (if args is object or array). After first call, it's set to false.

ur.undo() Undo last action. Returns arguments that are passed to redo.

ur.redo() Redo last action. Returns arguments that are passed to undo.

ur.undoAll() Undo all actions in undo stack.

ur.redoAll() Redo all actions in redo stack.

cy.on("undo", function(actionName, args){} ) Calls registered function with action name actionName via actionFunction(args)

cy.on("redo", function(actionName, args){} ) Calls registered function with action name actionName via actionFunction(args) *Note that args are returned from opposite action like (undo => redo || redo => undo)

ur.isUndoStackEmpty() Get whether undo stack is empty (namely is undoable)

ur.isRedoStackEmpty() Get whether undo stack is empty (namely is redoable)

ur.getUndoStack() Gets actions (with their args) in undo stack

ur.getRedoStack() Gets actions (with their args) in redo stack

ur.reset(undos, redos) If arguments are provided, overrides undo and redo stacks. Otherwise, undo and redo stacks are cleared.

Default Options

```javascript var options = { isDebug: false, // Debug mode for console messages actions: {},// actions to be added undoableDrag: true, // Whether dragging nodes are undoable can be a function as well stackSizeLimit: undefined, // Size limit of undo stack, note that the size of redo stack cannot exceed size of undo stack ready: function () { // callback when undo-redo is ready

        }
    }

   var ur = cy.undoRedo(options); // Can also be set whenever wanted.

```

Events

Parameters:
actionName: Name of the action.
args: Arguments passed to the action.
res: The value returned when the function is executed. This value is to be passed to redo function in afterUndo case and it will be passed to undo function in afterDo/afterRedo cases.

.on("beforeUndo", function(event, actionName, args){ })

.on("afterUndo", function(event, actionName, args, res){ })

.on("beforeRedo", function(event, actionName, args){ })

.on("afterRedo", function(event, actionName, args, res){ })

.on("beforeDo", function(event, actionName, args){ })

.on("afterDo", function(event, actionName, args, res){ })

Default Actions (Undoable/Redoable)

• Default actions can be run by the same way like ur.do("remove", "#spec")
• Undoable dragging can be disabled through options undoableDrag: false

.do("add", eleObj) http://js.cytoscape.org/#cy.add

.do("remove", eles/selector) http://js.cytoscape.org/#cy.remove

.do("layout", args) http://js.cytoscape.org/#core/layout

javascript var args = { options: {}, // layout options eles: null // if not null eles.layout will be called. }

.do("changeParent", args) http://js.cytoscape.org/#eles.move (Just for the nodes and regards the new positions of the nodes as well)

javascript var args = { parentData: parentData, // It keeps the newParentId (Just an id for each nodes for the first time) nodes: nodes, // Nodes to move the new parent posDiffX: diffX, // How the positions of the nodes will change in 'X' axis after they are moved the new parent posDiffY: diffY, // How the positions of the nodes will change in 'Y' axis after they are moved the new parent callback: function(eles) {} // optional - a function to be called after the change has occured, on the newly created elements }

• Following actions take argument(s) instead of extending

.do("restore", eles/selector) http://js.cytoscape.org/#eles.restore

.do("clone", eles/selector) http://js.cytoscape.org/#eles.restore

.do("select", eles/selector) http://js.cytoscape.org/#eles.select

.do("unselect", eles/selector) http://js.cytoscape.org/#eles.unselect

.do("move", args) http://js.cytoscape.org/#eles.move

javascript var args = { eles: ..., // eles/selector location: ... // as is in docs }

• The batch action can execute several actions at the same time. Those actions can then be undone as a whole.

.do("batch", actionList)

javascript var actionList = [{ name: ..., // name of the action param: ... // object containing the parameters as you would pass them to said action }, {...}, // a second action to be executed ... ]

Example

```javascript function deleteEles(eles){ return eles.remove(); } function restoreEles(eles){ return eles.restore(); } ur.action("deleteEles", deleteEles, restoreEles); // register

var selecteds = cy.$(":selected");
ur.do("deleteEles", selecteds); // 

ur.undo();
ur.redo();

`` * Note that defaultremovedefault action above has the same functionality and also supports string selectors like#spec`.

Dependencies

• Cytoscape.js ^3.3.0

Usage instructions

Download the library: * via npm: npm install cytoscape-undo-redo, * via bower: bower install cytoscape-undo-redo, or * via direct download in the repository (probably from a tag).

require() the library as appropriate for your project:

CommonJS: ```js var cytoscape = require('cytoscape'); var undoRedo = require('cytoscape-undo-redo');

undoRedo( cytoscape ); // register extension ```

AMD: js require(['cytoscape', 'cytoscape-undo-redo'], function( cytoscape, undoRedo ){ undoRedo( cytoscape ); // register extension });

Plain HTML/JS has the extension registered for you automatically, because no require() is needed.

Publishing instructions

This project is set up to automatically be published to npm and bower. To publish:

1. Set the version number environment variable: export VERSION=1.2.3
2. Publish: gulp publish
3. If publishing to bower for the first time, you'll need to run bower register cytoscape-undo-redo https://github.com/iVis-at-Bilkent/cytoscape.js-undo-redo.git

Team

• Selim Firat Yilmaz, Metin Can Siper, Ugur Dogrusoz of i-Vis at Bilkent University