cytoscape-cxtmenu.js

(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define([], factory);
	else if(typeof exports === 'object')
		exports["cytoscapeCxtmenu"] = factory();
	else
		root["cytoscapeCxtmenu"] = factory();
})(this, function() {
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 = 4);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var defaults = __webpack_require__(2);
var assign = __webpack_require__(1);

var _require = __webpack_require__(3),
    removeEles = _require.removeEles,
    setStyles = _require.setStyles,
    createElement = _require.createElement,
    getPixelRatio = _require.getPixelRatio,
    getOffset = _require.getOffset;

var cxtmenu = function cxtmenu(params) {
  var options = assign({}, defaults, params);
  var cy = this;
  var container = cy.container();
  var target = void 0;

  var data = {
    options: options,
    handlers: [],
    container: createElement({ class: 'cxtmenu' })
  };

  var wrapper = data.container;
  var parent = createElement();
  var canvas = createElement({ tag: 'canvas' });
  var commands = [];
  var c2d = canvas.getContext('2d');
  var r = options.menuRadius;
  var containerSize = (r + options.activePadding) * 2;
  var activeCommandI = void 0;
  var offset = void 0;

  container.insertBefore(wrapper, container.firstChild);
  wrapper.appendChild(parent);
  parent.appendChild(canvas);

  setStyles(wrapper, {
    position: 'absolute',
    zIndex: options.zIndex,
    userSelect: 'none',
    pointerEvents: 'none' // prevent events on menu in modern browsers
  });

  // prevent events on menu in legacy browsers
  ['mousedown', 'mousemove', 'mouseup', 'contextmenu'].forEach(function (evt) {
    wrapper.addEventListener(evt, function (e) {
      e.preventDefault();

      return false;
    });
  });

  setStyles(parent, {
    display: 'none',
    width: containerSize + 'px',
    height: containerSize + 'px',
    position: 'absolute',
    zIndex: 1,
    marginLeft: -options.activePadding + 'px',
    marginTop: -options.activePadding + 'px',
    userSelect: 'none'
  });

  canvas.width = containerSize;
  canvas.height = containerSize;

  function createMenuItems() {
    removeEles('.cxtmenu-item', parent);
    var dtheta = 2 * Math.PI / commands.length;
    var theta1 = Math.PI / 2;
    var theta2 = theta1 + dtheta;

    for (var i = 0; i < commands.length; i++) {
      var command = commands[i];

      var midtheta = (theta1 + theta2) / 2;
      var rx1 = 0.66 * r * Math.cos(midtheta);
      var ry1 = 0.66 * r * Math.sin(midtheta);

      var item = createElement({ class: 'cxtmenu-item' });
      setStyles(item, {
        color: options.itemColor,
        cursor: 'default',
        display: 'table',
        'text-align': 'center',
        //background: 'red',
        position: 'absolute',
        'text-shadow': '-1px -1px 2px ' + options.itemTextShadowColor + ', 1px -1px 2px ' + options.itemTextShadowColor + ', -1px 1px 2px ' + options.itemTextShadowColor + ', 1px 1px 1px ' + options.itemTextShadowColor,
        left: '50%',
        top: '50%',
        'min-height': r * 0.66 + 'px',
        width: r * 0.66 + 'px',
        height: r * 0.66 + 'px',
        marginLeft: rx1 - r * 0.33 + 'px',
        marginTop: -ry1 - r * 0.33 + 'px'
      });

      var content = createElement({ class: 'cxtmenu-content' });

      if (command.content instanceof HTMLElement) {
        content.appendChild(command.content);
      } else {
        content.innerHTML = command.content;
      }

      setStyles(content, {
        'width': r * 0.66 + 'px',
        'height': r * 0.66 + 'px',
        'vertical-align': 'middle',
        'display': 'table-cell'
      });

      setStyles(content, command.contentStyle || {});

      if (command.disabled === true || command.enabled === false) {
        content.setAttribute('class', 'cxtmenu-content cxtmenu-disabled');
      }

      parent.appendChild(item);
      item.appendChild(content);

      theta1 += dtheta;
      theta2 += dtheta;
    }
  }

  function queueDrawBg(rspotlight) {
    redrawQueue.drawBg = [rspotlight];
  }

  function drawBg(rspotlight) {
    rspotlight = rspotlight !== undefined ? rspotlight : rs;

    c2d.globalCompositeOperation = 'source-over';

    c2d.clearRect(0, 0, containerSize, containerSize);

    // draw background items
    c2d.fillStyle = options.fillColor;
    var dtheta = 2 * Math.PI / commands.length;
    var theta1 = Math.PI / 2;
    var theta2 = theta1 + dtheta;

    for (var index = 0; index < commands.length; index++) {
      var command = commands[index];

      if (command.fillColor) {
        c2d.fillStyle = command.fillColor;
      }
      c2d.beginPath();
      c2d.moveTo(r + options.activePadding, r + options.activePadding);
      c2d.arc(r + options.activePadding, r + options.activePadding, r, 2 * Math.PI - theta1, 2 * Math.PI - theta2, true);
      c2d.closePath();
      c2d.fill();

      theta1 += dtheta;
      theta2 += dtheta;

      c2d.fillStyle = options.fillColor;
    }
    // draw separators between items
    c2d.globalCompositeOperation = 'destination-out';
    c2d.strokeStyle = 'white';
    c2d.lineWidth = options.separatorWidth;
    theta1 = Math.PI / 2;
    theta2 = theta1 + dtheta;

    for (var i = 0; i < commands.length; i++) {
      var rx1 = r * Math.cos(theta1);
      var ry1 = r * Math.sin(theta1);
      c2d.beginPath();
      c2d.moveTo(r + options.activePadding, r + options.activePadding);
      c2d.lineTo(r + options.activePadding + rx1, r + options.activePadding - ry1);
      c2d.closePath();
      c2d.stroke();

      theta1 += dtheta;
      theta2 += dtheta;
    }

    c2d.fillStyle = 'white';
    c2d.globalCompositeOperation = 'destination-out';
    c2d.beginPath();
    c2d.arc(r + options.activePadding, r + options.activePadding, rspotlight + options.spotlightPadding, 0, Math.PI * 2, true);
    c2d.closePath();
    c2d.fill();

    c2d.globalCompositeOperation = 'source-over';
  }

  function queueDrawCommands(rx, ry, theta) {
    redrawQueue.drawCommands = [rx, ry, theta];
  }

  function drawCommands(rx, ry, theta) {
    var dtheta = 2 * Math.PI / commands.length;
    var theta1 = Math.PI / 2;
    var theta2 = theta1 + dtheta;

    theta1 += dtheta * activeCommandI;
    theta2 += dtheta * activeCommandI;

    c2d.fillStyle = options.activeFillColor;
    c2d.strokeStyle = 'black';
    c2d.lineWidth = 1;
    c2d.beginPath();
    c2d.moveTo(r + options.activePadding, r + options.activePadding);
    c2d.arc(r + options.activePadding, r + options.activePadding, r + options.activePadding, 2 * Math.PI - theta1, 2 * Math.PI - theta2, true);
    c2d.closePath();
    c2d.fill();

    c2d.fillStyle = 'white';
    c2d.globalCompositeOperation = 'destination-out';

    var tx = r + options.activePadding + rx / r * (rs + options.spotlightPadding - options.indicatorSize / 4);
    var ty = r + options.activePadding + ry / r * (rs + options.spotlightPadding - options.indicatorSize / 4);
    var rot = Math.PI / 4 - theta;

    c2d.translate(tx, ty);
    c2d.rotate(rot);

    // clear the indicator
    c2d.beginPath();
    c2d.fillRect(-options.indicatorSize / 2, -options.indicatorSize / 2, options.indicatorSize, options.indicatorSize);
    c2d.closePath();
    c2d.fill();

    c2d.rotate(-rot);
    c2d.translate(-tx, -ty);

    // c2d.setTransform( 1, 0, 0, 1, 0, 0 );

    // clear the spotlight
    c2d.beginPath();
    c2d.arc(r + options.activePadding, r + options.activePadding, rs + options.spotlightPadding, 0, Math.PI * 2, true);
    c2d.closePath();
    c2d.fill();

    c2d.globalCompositeOperation = 'source-over';
  }

  function updatePixelRatio() {
    var pxr = getPixelRatio();
    var w = containerSize;
    var h = containerSize;

    canvas.width = w * pxr;
    canvas.height = h * pxr;

    canvas.style.width = w + 'px';
    canvas.style.height = h + 'px';

    c2d.setTransform(1, 0, 0, 1, 0, 0);
    c2d.scale(pxr, pxr);
  }

  var redrawing = true;
  var redrawQueue = {};

  var raf = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.msRequestAnimationFrame || function (fn) {
    return setTimeout(fn, 16);
  };

  var redraw = function redraw() {
    if (redrawQueue.drawBg) {
      drawBg.apply(null, redrawQueue.drawBg);
    }

    if (redrawQueue.drawCommands) {
      drawCommands.apply(null, redrawQueue.drawCommands);
    }

    redrawQueue = {};

    if (redrawing) {
      raf(redraw);
    }
  };

  // kick off
  updatePixelRatio();
  redraw();

  var ctrx = void 0,
      ctry = void 0,
      rs = void 0;

  var bindings = {
    on: function on(events, selector, fn) {

      var _fn = fn;
      if (selector === 'core') {
        _fn = function _fn(e) {
          if (e.cyTarget === cy || e.target === cy) {
            // only if event target is directly core
            return fn.apply(this, [e]);
          }
        };
      }

      data.handlers.push({
        events: events,
        selector: selector,
        fn: _fn
      });

      if (selector === 'core') {
        cy.on(events, _fn);
      } else {
        cy.on(events, selector, _fn);
      }

      return this;
    }
  };

  function addEventListeners() {
    var grabbable = void 0;
    var inGesture = false;
    var menuOpen = false; // Used only when duplicate open/close events. ie. `cxttap`
    var zoomEnabled = void 0;
    var panEnabled = void 0;
    var boxEnabled = void 0;
    var gestureStartEvent = void 0;

    var restoreZoom = function restoreZoom() {
      cy.userZoomingEnabled(zoomEnabled);
    };

    var restoreGrab = function restoreGrab() {
      if (grabbable) {
        target.grabify();
      }
    };

    var restorePan = function restorePan() {
      cy.userPanningEnabled(panEnabled);
    };

    var restoreBoxSeln = function restoreBoxSeln() {
      cy.boxSelectionEnabled(boxEnabled);
    };

    var restoreGestures = function restoreGestures() {
      restoreGrab();
      restoreZoom();
      restorePan();
      restoreBoxSeln();
    };

    var startHandler = function startHandler(e) {
      if (menuOpen) return;
      target = this; // Remember which node the context menu is for
      var ele = this;
      var isCy = this === cy;

      if (inGesture) {
        parent.style.display = 'none';
        inGesture = false;
        restoreGestures();
      }

      if (typeof options.commands === 'function') {
        var res = options.commands(target);
        commands = res.then ? res.then(function (_commands) {
          return _commands;
        }) : res;
      } else {
        commands = options.commands;
      }
      openMenu();

      function openMenu() {
        if (!commands || commands.length === 0) {
          return;
        }

        zoomEnabled = cy.userZoomingEnabled();
        panEnabled = cy.userPanningEnabled();
        boxEnabled = cy.boxSelectionEnabled();

        cy.userZoomingEnabled(false);
        cy.userPanningEnabled(false);
        cy.boxSelectionEnabled(false);

        grabbable = target.grabbable && target.grabbable();
        if (grabbable) {
          target.ungrabify();
        }

        var rp = void 0,
            rw = void 0,
            rh = void 0;
        if (!isCy && ele.isNode() && !ele.isParent() && !options.atMouse) {
          rp = ele.renderedPosition();
          rw = ele.renderedWidth();
          rh = ele.renderedHeight();
        } else {
          rp = e.renderedPosition || e.cyRenderedPosition;
          rw = 1;
          rh = 1;
        }

        offset = getOffset(container);
        ctrx = rp.x;
        ctry = rp.y;
        createMenuItems();

        setStyles(parent, {
          display: 'block',
          left: rp.x - r + 'px',
          top: rp.y - r + 'px'
        });

        rs = Math.max(rw, rh) / 2;
        rs = Math.max(rs, options.minSpotlightRadius);
        rs = Math.min(rs, options.maxSpotlightRadius);

        queueDrawBg();
        activeCommandI = undefined;
        inGesture = true;
        gestureStartEvent = e;
      }
    };

    var dragHandler = function dragHandler(e) {
      if (!inGesture) {
        return;
      }

      var origE = e.originalEvent;
      var isTouch = origE.touches && origE.touches.length > 0;

      var pageX = (isTouch ? origE.touches[0].pageX : origE.pageX) - window.pageXOffset;
      var pageY = (isTouch ? origE.touches[0].pageY : origE.pageY) - window.pageYOffset;

      activeCommandI = undefined;

      var dx = pageX - offset.left - ctrx;
      var dy = pageY - offset.top - ctry;
      if (dx === 0) {
        dx = 0.01;
      }

      var d = Math.sqrt(dx * dx + dy * dy);
      var cosTheta = (dy * dy - d * d - dx * dx) / (-2 * d * dx);
      var theta = Math.acos(cosTheta);

      if (d < rs + options.spotlightPadding || options.openMenuEvents.includes('cxttap') && d > containerSize / 2) {
        queueDrawBg();
        return;
      }

      queueDrawBg();
      var rx = dx * r / d;
      var ry = dy * r / d;

      if (dy > 0) {
        theta = Math.PI + Math.abs(theta - Math.PI);
      }

      var dtheta = 2 * Math.PI / commands.length;
      var theta1 = Math.PI / 2;
      var theta2 = theta1 + dtheta;

      for (var i = 0; i < commands.length; i++) {
        var command = commands[i];

        var inThisCommand = theta1 <= theta && theta <= theta2 || theta1 <= theta + 2 * Math.PI && theta + 2 * Math.PI <= theta2;

        if (command.disabled === true || command.enabled === false) {
          inThisCommand = false;
        }

        if (inThisCommand) {
          activeCommandI = i;
          break;
        }

        theta1 += dtheta;
        theta2 += dtheta;
      }

      queueDrawCommands(rx, ry, theta);
    };

    var endHandler = function endHandler() {
      var openEvts = options.openMenuEvents.split(' ');
      var closeEvts = options.closeMenuEvents.split(' ');
      if (!menuOpen && openEvts.some(function (e) {
        return closeEvts.includes(e);
      })) {
        menuOpen = true;
        return;
      }
      parent.style.display = 'none';

      var select = activeCommandI !== undefined ? commands[activeCommandI].select : undefined;
      if (select) {
        select.apply(target, [target, gestureStartEvent]);
        activeCommandI = undefined;
      }

      inGesture = false;
      menuOpen = false;
      restoreGestures();
    };

    window.addEventListener('resize', updatePixelRatio);

    bindings.on('resize', updatePixelRatio).on(options.openMenuEvents, options.selector, startHandler).on('cxtdrag tapdrag', options.selector, dragHandler).on('tapdrag', dragHandler).on(options.closeMenuEvents, endHandler);
  }

  function removeEventListeners() {
    var handlers = data.handlers;

    for (var i = 0; i < handlers.length; i++) {
      var h = handlers[i];

      if (h.selector === 'core') {
        cy.off(h.events, h.fn);
      } else {
        cy.off(h.events, h.selector, h.fn);
      }
    }

    window.removeEventListener('resize', updatePixelRatio);
  }

  function destroyInstance() {
    redrawing = false;

    removeEventListeners();

    wrapper.remove();
  }

  addEventListeners();

  return {
    destroy: function destroy() {
      destroyInstance();
    }
  };
};

module.exports = cxtmenu;

/***/ }),
/* 1 */
/***/ (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;
};

/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var defaults = {
  menuRadius: 100, // the radius of the circular menu in pixels
  selector: 'node', // elements matching this Cytoscape.js selector will trigger cxtmenus
  commands: [// an array of commands to list in the menu or a function that returns the array
    /*
    { // example command
      fillColor: 'rgba(200, 200, 200, 0.75)', // optional: custom background color for item
      content: 'a command name' // html/text content to be displayed in the menu
      contentStyle: {}, // css key:value pairs to set the command's css in js if you want
      select: function(ele){ // a function to execute when the command is selected
        console.log( ele.id() ) // `ele` holds the reference to the active element
      },
      enabled: true // whether the command is selectable
    }
    */
  ], // function( ele ){ return [ /*...*/ ] }, // example function for commands
  fillColor: 'rgba(0, 0, 0, 0.75)', // the background colour of the menu
  activeFillColor: 'rgba(1, 105, 217, 0.75)', // the colour used to indicate the selected command
  activePadding: 20, // additional size in pixels for the active command
  indicatorSize: 24, // the size in pixels of the pointer to the active command
  separatorWidth: 3, // the empty spacing in pixels between successive commands
  spotlightPadding: 4, // extra spacing in pixels between the element and the spotlight
  minSpotlightRadius: 24, // the minimum radius in pixels of the spotlight
  maxSpotlightRadius: 38, // the maximum radius in pixels of the spotlight
  /**
   * Open and Close menu events are space-seperated cytoscape events and only support the following combinations.
   * openMenuEvents = 'cxttapstart' and/or 'taphold', closeMenuEvents = 'cxttapend' and/or 'tapend',
   * openMenuEvents = 'cxttap', closeMenuEvents = 'click' or 'cxttap'
   */
  openMenuEvents: 'cxttapstart taphold',
  closeMenuEvents: 'cxttapend tapend',
  itemColor: 'white', // the colour of text in the command's content
  itemTextShadowColor: 'transparent', // the text shadow colour of the command's content
  zIndex: 9999, // the z-index of the ui div
  atMouse: false // draw menu at mouse position
};

module.exports = defaults;

/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var removeEles = function removeEles(query) {
  var ancestor = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : document;

  var els = ancestor.querySelectorAll(query);

  for (var i = 0; i < els.length; i++) {
    var el = els[i];

    el.parentNode.removeChild(el);
  }
};

var setStyles = function setStyles(el, style) {
  var props = Object.keys(style);

  for (var i = 0, l = props.length; i < l; i++) {
    el.style[props[i]] = style[props[i]];
  }
};

var createElement = function createElement(options) {
  options = options || {};

  var el = document.createElement(options.tag || 'div');

  el.className = options.class || '';

  if (options.style) {
    setStyles(el, options.style);
  }

  return el;
};

var getPixelRatio = function getPixelRatio() {
  return window.devicePixelRatio || 1;
};

var getOffset = function getOffset(el) {
  var offset = el.getBoundingClientRect();

  return {
    left: offset.left + document.body.scrollLeft + parseFloat(getComputedStyle(document.body)['padding-left']) + parseFloat(getComputedStyle(document.body)['border-left-width']),
    top: offset.top + document.body.scrollTop + parseFloat(getComputedStyle(document.body)['padding-top']) + parseFloat(getComputedStyle(document.body)['border-top-width'])
  };
};

module.exports = { removeEles: removeEles, setStyles: setStyles, createElement: createElement, getPixelRatio: getPixelRatio, getOffset: getOffset };

/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var cxtmenu = __webpack_require__(0);

// registers the extension on a cytoscape lib ref
var register = function register(cytoscape) {
  if (!cytoscape) {
    return;
  } // can't register if cytoscape unspecified

  cytoscape('core', 'cxtmenu', cxtmenu); // register with cytoscape.js
};

if (typeof cytoscape !== 'undefined') {
  // expose to global cytoscape (i.e. window.cytoscape)
  register(cytoscape);
}

module.exports = register;

/***/ })
/******/ ]);
});