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cytoscape-edgehandles.js
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(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory(require("lodash.memoize"), require("lodash.throttle"));
else if(typeof define === 'function' && define.amd)
define(["lodash.memoize", "lodash.throttle"], factory);
else if(typeof exports === 'object')
exports["cytoscapeEdgehandles"] = factory(require("lodash.memoize"), require("lodash.throttle"));
else
root["cytoscapeEdgehandles"] = factory(root["_"]["memoize"], root["_"]["throttle"]);
})(this, function(__WEBPACK_EXTERNAL_MODULE_13__, __WEBPACK_EXTERNAL_MODULE_14__) {
return /******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // identity function for calling harmony imports with the correct context
/******/ __webpack_require__.i = function(value) { return value; };
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, {
/******/ configurable: false,
/******/ enumerable: true,
/******/ get: getter
/******/ });
/******/ }
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __webpack_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __webpack_require__.d(getter, 'a', getter);
/******/ return getter;
/******/ };
/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(__webpack_require__.s = 12);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
// Simple, internal Object.assign() polyfill for options objects etc.
module.exports = Object.assign != null ? Object.assign.bind(Object) : function (tgt) {
for (var _len = arguments.length, srcs = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
srcs[_key - 1] = arguments[_key];
}
srcs.filter(function (src) {
return src != null;
}).forEach(function (src) {
Object.keys(src).forEach(function (k) {
return tgt[k] = src[k];
});
});
return tgt;
};
/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var Edgehandles = __webpack_require__(10);
var assign = __webpack_require__(0);
module.exports = function (options) {
var cy = this;
return new Edgehandles(assign({ cy: cy }, options));
};
/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
function disableGestures() {
this.saveGestureState();
this.cy.zoomingEnabled(false).panningEnabled(false).boxSelectionEnabled(false);
if (this.options.disableBrowserGestures) {
var wlOpts = this.windowListenerOptions;
window.addEventListener('touchstart', this.preventDefault, wlOpts);
window.addEventListener('touchmove', this.preventDefault, wlOpts);
window.addEventListener('wheel', this.preventDefault, wlOpts);
}
return this;
}
function resetGestures() {
this.cy.zoomingEnabled(this.lastZoomingEnabled).panningEnabled(this.lastPanningEnabled).boxSelectionEnabled(this.lastBoxSelectionEnabled);
if (this.options.disableBrowserGestures) {
var wlOpts = this.windowListenerOptions;
window.removeEventListener('touchstart', this.preventDefault, wlOpts);
window.removeEventListener('touchmove', this.preventDefault, wlOpts);
window.removeEventListener('wheel', this.preventDefault, wlOpts);
}
return this;
}
function saveGestureState() {
var cy = this.cy;
this.lastPanningEnabled = cy.panningEnabled();
this.lastZoomingEnabled = cy.zoomingEnabled();
this.lastBoxSelectionEnabled = cy.boxSelectionEnabled();
return this;
}
module.exports = { disableGestures: disableGestures, resetGestures: resetGestures, saveGestureState: saveGestureState };
/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
function addCytoscapeListeners() {
var _this = this;
var cy = this.cy,
options = this.options;
// grabbing nodes
this.addListener(cy, 'drag', function () {
return _this.grabbingNode = true;
});
this.addListener(cy, 'free', function () {
return _this.grabbingNode = false;
});
// show handle on hover
this.addListener(cy, 'mouseover', 'node', function (e) {
_this.show(e.target);
});
// hide handle on tap handle
this.addListener(cy, 'tap', 'node', function (e) {
var node = e.target;
if (!node.same(_this.handleNode)) {
_this.show(node);
}
});
// hide handle when source node moved
this.addListener(cy, 'position', 'node', function (e) {
if (e.target.same(_this.sourceNode)) {
_this.hide();
}
});
// start on tapstart handle
// start on tapstart node (draw mode)
// toggle on source node
this.addListener(cy, 'tapstart', 'node', function (e) {
var node = e.target;
if (node.same(_this.handleNode)) {
_this.start(_this.sourceNode);
} else if (_this.drawMode) {
_this.start(node);
} else if (node.same(_this.sourceNode)) {
_this.hide();
}
});
// update line on drag
this.addListener(cy, 'tapdrag', function (e) {
_this.update(e.position);
});
// hover over preview
this.addListener(cy, 'tapdragover', 'node', function (e) {
if (options.snap) {
// then ignore events like mouseover
} else {
_this.preview(e.target);
}
});
// hover out unpreview
this.addListener(cy, 'tapdragout', 'node', function (e) {
if (options.snap) {
// then keep the preview
} else {
_this.unpreview(e.target);
}
});
// stop gesture on tapend
this.addListener(cy, 'tapend', function () {
_this.stop();
});
// hide handle if source node is removed
this.addListener(cy, 'remove', function (e) {
if (e.target.same(_this.sourceNode)) {
_this.hide();
}
});
return this;
}
module.exports = { addCytoscapeListeners: addCytoscapeListeners };
/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/* eslint-disable no-unused-vars */
var defaults = {
preview: true, // whether to show added edges preview before releasing selection
hoverDelay: 150, // time spent hovering over a target node before it is considered selected
handleNodes: 'node', // selector/filter function for whether edges can be made from a given node
snap: false, // when enabled, the edge can be drawn by just moving close to a target node (can be confusing on compound graphs)
snapThreshold: 50, // the target node must be less than or equal to this many pixels away from the cursor/finger
snapFrequency: 15, // the number of times per second (Hz) that snap checks done (lower is less expensive)
noEdgeEventsInDraw: false, // set events:no to edges during draws, prevents mouseouts on compounds
disableBrowserGestures: true, // during an edge drawing gesture, disable browser gestures such as two-finger trackpad swipe and pinch-to-zoom
handlePosition: function handlePosition(node) {
return 'middle top'; // sets the position of the handle in the format of "X-AXIS Y-AXIS" such as "left top", "middle top"
},
handleInDrawMode: false, // whether to show the handle in draw mode
edgeType: function edgeType(sourceNode, targetNode) {
// can return 'flat' for flat edges between nodes or 'node' for intermediate node between them
// returning null/undefined means an edge can't be added between the two nodes
return 'flat';
},
loopAllowed: function loopAllowed(node) {
// for the specified node, return whether edges from itself to itself are allowed
return false;
},
nodeLoopOffset: -50, // offset for edgeType: 'node' loops
nodeParams: function nodeParams(sourceNode, targetNode) {
// for edges between the specified source and target
// return element object to be passed to cy.add() for intermediary node
return {};
},
edgeParams: function edgeParams(sourceNode, targetNode, i) {
// for edges between the specified source and target
// return element object to be passed to cy.add() for edge
// NB: i indicates edge index in case of edgeType: 'node'
return {};
},
ghostEdgeParams: function ghostEdgeParams() {
// return element object to be passed to cy.add() for the ghost edge
// (default classes are always added for you)
return {};
},
show: function show(sourceNode) {
// fired when handle is shown
},
hide: function hide(sourceNode) {
// fired when the handle is hidden
},
start: function start(sourceNode) {
// fired when edgehandles interaction starts (drag on handle)
},
complete: function complete(sourceNode, targetNode, addedEles) {
// fired when edgehandles is done and elements are added
},
stop: function stop(sourceNode) {
// fired when edgehandles interaction is stopped (either complete with added edges or incomplete)
},
cancel: function cancel(sourceNode, cancelledTargets) {
// fired when edgehandles are cancelled (incomplete gesture)
},
hoverover: function hoverover(sourceNode, targetNode) {
// fired when a target is hovered
},
hoverout: function hoverout(sourceNode, targetNode) {
// fired when a target isn't hovered anymore
},
previewon: function previewon(sourceNode, targetNode, previewEles) {
// fired when preview is shown
},
previewoff: function previewoff(sourceNode, targetNode, previewEles) {
// fired when preview is hidden
},
drawon: function drawon() {
// fired when draw mode enabled
},
drawoff: function drawoff() {
// fired when draw mode disabled
}
};
/* eslint-enable */
module.exports = defaults;
/***/ }),
/* 5 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
function toggleDrawMode(bool) {
var cy = this.cy,
options = this.options;
this.drawMode = bool != null ? bool : !this.drawMode;
if (this.drawMode) {
this.prevUngrabifyState = cy.autoungrabify();
cy.autoungrabify(true);
if (!options.handleInDrawMode && this.handleShown()) {
this.hide();
}
this.emit('drawon');
} else {
cy.autoungrabify(this.prevUngrabifyState);
this.emit('drawoff');
}
return this;
}
function enableDrawMode() {
return this.toggleDrawMode(true);
}
function disableDrawMode() {
return this.toggleDrawMode(false);
}
module.exports = { toggleDrawMode: toggleDrawMode, enableDrawMode: enableDrawMode, disableDrawMode: disableDrawMode };
/***/ }),
/* 6 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
var assign = __webpack_require__(0);
var isString = function isString(x) {
return (typeof x === 'undefined' ? 'undefined' : _typeof(x)) === _typeof('');
};
var isArray = function isArray(x) {
return (typeof x === 'undefined' ? 'undefined' : _typeof(x)) === _typeof([]) && x.length != null;
};
function getEleJson(overrides, params, addedClasses) {
var json = {};
// basic values
assign(json, params, overrides);
// make sure params can specify data but that overrides take precedence
assign(json.data, params.data, overrides.data);
if (isString(params.classes)) {
json.classes = params.classes + ' ' + addedClasses;
} else if (isArray(params.classes)) {
json.classes = params.classes.join(' ') + ' ' + addedClasses;
} else {
json.classes = addedClasses;
}
return json;
}
function makeEdges() {
var preview = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
var cy = this.cy,
options = this.options,
presumptiveTargets = this.presumptiveTargets,
previewEles = this.previewEles,
active = this.active;
var source = this.sourceNode;
var target = this.targetNode;
var classes = preview ? 'eh-preview' : '';
var added = cy.collection();
var edgeType = options.edgeType(source, target);
// can't make edges outside of regular gesture lifecycle
if (!active) {
return;
}
// must have a non-empty edge type
if (!edgeType) {
return;
}
// can't make preview if disabled
if (preview && !options.preview) {
return;
}
// detect cancel
if (!target || target.size() === 0) {
previewEles.remove();
this.emit('cancel', this.mp(), source, presumptiveTargets);
return;
}
// just remove preview class if we already have the edges
if (!preview && options.preview) {
previewEles.removeClass('eh-preview').style('events', '');
this.emit('complete', this.mp(), source, target, previewEles);
return;
}
var p1 = source.position();
var p2 = target.position();
var p = void 0;
if (source.same(target)) {
p = {
x: p1.x + options.nodeLoopOffset,
y: p1.y + options.nodeLoopOffset
};
} else {
p = {
x: (p1.x + p2.x) / 2,
y: (p1.y + p2.y) / 2
};
}
if (edgeType === 'node') {
var interNode = cy.add(getEleJson({
group: 'nodes',
position: p
}, options.nodeParams(source, target), classes));
var source2inter = cy.add(getEleJson({
group: 'edges',
data: {
source: source.id(),
target: interNode.id()
}
}, options.edgeParams(source, target, 0), classes));
var inter2target = cy.add(getEleJson({
group: 'edges',
data: {
source: interNode.id(),
target: target.id()
}
}, options.edgeParams(source, target, 1), classes));
added = added.merge(interNode).merge(source2inter).merge(inter2target);
} else {
// flat
var source2target = cy.add(getEleJson({
group: 'edges',
data: {
source: source.id(),
target: target.id()
}
}, options.edgeParams(source, target, 0), classes));
added = added.merge(source2target);
}
if (preview) {
this.previewEles = added;
added.style('events', 'no');
} else {
added.style('events', '');
this.emit('complete', this.mp(), source, target, added);
}
return this;
}
function makePreview() {
this.makeEdges(true);
return this;
}
function previewShown() {
return this.previewEles.nonempty() && this.previewEles.inside();
}
function removePreview() {
if (this.previewShown()) {
this.previewEles.remove();
}
return this;
}
function handleShown() {
return this.handleNode.nonempty() && this.handleNode.inside();
}
function removeHandle() {
if (this.handleShown()) {
this.handleNode.remove();
}
return this;
}
function setHandleFor(node) {
var _this = this;
var options = this.options,
cy = this.cy;
var handlePosition = _typeof(options.handlePosition) === _typeof('') ? function () {
return options.handlePosition;
} : options.handlePosition;
var p = node.position();
var h = node.outerHeight();
var w = node.outerWidth();
// store how much we should move the handle from origin(p.x, p.y)
var moveX = 0;
var moveY = 0;
// grab axes
var axes = handlePosition(node).toLowerCase().split(/\s+/);
var axisX = axes[0];
var axisY = axes[1];
// based on handlePosition move left/right/top/bottom. Middle/middle will just be normal
if (axisX === 'left') {
moveX = -(w / 2);
} else if (axisX === 'right') {
moveX = w / 2;
}if (axisY === 'top') {
moveY = -(h / 2);
} else if (axisY === 'bottom') {
moveY = h / 2;
}
// set handle x and y based on adjusted positions
var hx = this.hx = p.x + moveX;
var hy = this.hy = p.y + moveY;
var pos = { x: hx, y: hy };
if (this.handleShown()) {
this.handleNode.position(pos);
} else {
cy.batch(function () {
_this.handleNode = cy.add({
classes: 'eh-handle',
position: pos,
grabbable: false,
selectable: false
});
_this.handleNode.style('z-index', 9007199254740991);
});
}
return this;
}
function updateEdge() {
var _this2 = this;
var sourceNode = this.sourceNode,
ghostNode = this.ghostNode,
cy = this.cy,
mx = this.mx,
my = this.my,
options = this.options;
var x = mx;
var y = my;
var ghostEdge = void 0,
ghostEles = void 0;
// can't draw a line without having the starting node
if (!sourceNode) {
return;
}
if (!ghostNode || ghostNode.length === 0 || ghostNode.removed()) {
ghostEles = this.ghostEles = cy.collection();
cy.batch(function () {
ghostNode = _this2.ghostNode = cy.add({
group: 'nodes',
classes: 'eh-ghost eh-ghost-node',
position: {
x: 0,
y: 0
}
});
ghostNode.style({
'background-color': 'blue',
'width': 0.0001,
'height': 0.0001,
'opacity': 0,
'events': 'no'
});
var ghostEdgeParams = options.ghostEdgeParams();
ghostEdge = cy.add(assign({}, ghostEdgeParams, {
group: 'edges',
data: assign({}, ghostEdgeParams.data, {
source: sourceNode.id(),
target: ghostNode.id()
}),
classes: 'eh-ghost eh-ghost-edge'
}));
ghostEdge.style({
'events': 'no'
});
});
ghostEles.merge(ghostNode).merge(ghostEdge);
}
ghostNode.position({ x: x, y: y });
return this;
}
module.exports = {
makeEdges: makeEdges, makePreview: makePreview, removePreview: removePreview, previewShown: previewShown,
updateEdge: updateEdge,
handleShown: handleShown, setHandleFor: setHandleFor, removeHandle: removeHandle
};
/***/ }),
/* 7 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
function disableEdgeEvents() {
if (this.options.noEdgeEventsInDraw) {
this.cy.edges().style('events', 'no');
}
return this;
}
function enableEdgeEvents() {
if (this.options.noEdgeEventsInDraw) {
this.cy.edges().style('events', '');
}
return this;
}
module.exports = { disableEdgeEvents: disableEdgeEvents, enableEdgeEvents: enableEdgeEvents };
/***/ }),
/* 8 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
function enable() {
this.enabled = true;
this.emit('enable');
return this;
}
function disable() {
this.enabled = false;
this.emit('disable');
return this;
}
module.exports = { enable: enable, disable: disable };
/***/ }),
/* 9 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var memoize = __webpack_require__(13);
var sqrt2 = Math.sqrt(2);
function canStartOn(node) {
var options = this.options,
previewEles = this.previewEles,
ghostEles = this.ghostEles,
handleNode = this.handleNode;
var isPreview = function isPreview(el) {
return previewEles.anySame(el);
};
var isGhost = function isGhost(el) {
return ghostEles.anySame(el);
};
var userFilter = function userFilter(el) {
return el.filter(options.handleNodes).length > 0;
};
var isHandle = function isHandle(el) {
return handleNode.same(el);
};
var isTemp = function isTemp(el) {
return isPreview(el) || isHandle(el) || isGhost(el);
};
var enabled = this.enabled,
active = this.active,
grabbingNode = this.grabbingNode;
return enabled && !active && !grabbingNode && (node == null || !isTemp(node) && userFilter(node));
}
function canStartDrawModeOn(node) {
return this.canStartOn(node) && this.drawMode;
}
function canStartNonDrawModeOn(node) {
return this.canStartOn(node) && !this.drawMode;
}
function show(node) {
var options = this.options,
drawMode = this.drawMode;
if (!this.canStartOn(node) || drawMode && !options.handleInDrawMode) {
return;
}
this.sourceNode = node;
this.setHandleFor(node);
this.emit('show', this.hp(), this.sourceNode);
return this;
}
function hide() {
this.removeHandle();
this.emit('hide', this.hp(), this.sourceNode);
return this;
}
function start(node) {
if (!this.canStartOn(node)) {
return;
}
this.active = true;
this.sourceNode = node;
this.sourceNode.addClass('eh-source');
this.disableGestures();
this.disableEdgeEvents();
this.emit('start', this.hp(), node);
}
function update(pos) {
if (!this.active) {
return;
}
var p = pos;
this.mx = p.x;
this.my = p.y;
this.updateEdge();
this.throttledSnap();
return this;
}
function snap() {
if (!this.active || !this.options.snap) {
return false;
}
var cy = this.cy;
var tgt = this.targetNode;
var threshold = this.options.snapThreshold;
var mousePos = this.mp();
var handleNode = this.handleNode,
previewEles = this.previewEles,
ghostNode = this.ghostNode;
var radius = function radius(n) {
return sqrt2 * Math.max(n.outerWidth(), n.outerHeight()) / 2;
}; // worst-case enclosure of bb by circle
var sqDist = function sqDist(x1, y1, x2, y2) {
var dx = x2 - x1;var dy = y2 - y1;return dx * dx + dy * dy;
};
var sqDistByPt = function sqDistByPt(p1, p2) {
return sqDist(p1.x, p1.y, p2.x, p2.y);
};
var nodeSqDist = function nodeSqDist(n) {
return sqDistByPt(n.position(), mousePos);
};
var sqThreshold = function sqThreshold(n) {
var r = radius(n);var t = r + threshold;return t * t;
};
var isWithinTheshold = function isWithinTheshold(n) {
return nodeSqDist(n) <= sqThreshold(n);
};
var bbSqDist = function bbSqDist(n) {
var p = n.position();
var halfW = n.outerWidth() / 2;
var halfH = n.outerHeight() / 2;
// node and mouse positions, line is formed from node to mouse
var nx = p.x;
var ny = p.y;
var mx = mousePos.x;
var my = mousePos.y;
// bounding box
var x1 = nx - halfW;
var x2 = nx + halfW;
var y1 = ny - halfH;
var y2 = ny + halfH;
var insideXBounds = x1 <= mx && mx <= x2;
var insideYBounds = y1 <= my && my <= y2;
if (insideXBounds && insideYBounds) {
// inside box
return 0;
} else if (insideXBounds) {
// perpendicular distance to box, top or bottom
var dy1 = my - y1;
var dy2 = my - y2;
return Math.min(dy1 * dy1, dy2 * dy2);
} else if (insideYBounds) {
// perpendicular distance to box, left or right
var dx1 = mx - x1;
var dx2 = mx - x2;
return Math.min(dx1 * dx1, dx2 * dx2);
} else if (mx < x1 && my < y1) {
// top-left corner distance
return sqDist(mx, my, x1, y1);
} else if (mx > x2 && my < y1) {
// top-right corner distance
return sqDist(mx, my, x2, y1);
} else if (mx < x1 && my > y2) {
// bottom-left corner distance
return sqDist(mx, my, x1, y2);
} else {
// bottom-right corner distance
return sqDist(mx, my, x2, y2);
}
};
var cmpBbSqDist = function cmpBbSqDist(n1, n2) {
return bbSqDist(n1) - bbSqDist(n2);
};
var cmp = cmpBbSqDist;
var allowHoverDelay = false;
var mouseIsInside = function mouseIsInside(n) {
var mp = mousePos;
var w = n.outerWidth();
var halfW = w / 2;
var h = n.outerHeight();
var halfH = h / 2;
var p = n.position();
var x1 = p.x - halfW;
var x2 = p.x + halfW;
var y1 = p.y - halfH;
var y2 = p.y + halfH;
return x1 <= mp.x && mp.x <= x2 && y1 <= mp.y && mp.y <= y2;
};
var isEhEle = function isEhEle(n) {
return n.same(handleNode) || n.same(previewEles) || n.same(ghostNode);
};
var nodesByDist = cy.nodes(function (n) {
return !isEhEle(n) && isWithinTheshold(n);
}).sort(cmp);
var snapped = false;
if (tgt.nonempty() && !isWithinTheshold(tgt)) {
this.unpreview(tgt);
}
for (var i = 0; i < nodesByDist.length; i++) {
var n = nodesByDist[i];
// skip a parent node when the mouse is inside it
if (n.isParent() && mouseIsInside(n)) {
continue;
}
// skip a child node when the mouse is not inside the parent
if (n.isChild() && !mouseIsInside(n.parent())) {
continue;
}
if (n.same(tgt) || this.preview(n, allowHoverDelay)) {
snapped = true;
break;
}