MacroMakerContextMenu.js

(function() {
  
  "use strict";

  //
  // H E L P E R    F U N C T I O N S
  //

  function clickInsideElement( e, className ) {
    var el = e.srcElement || e.target;
    
    if ( el.classList.contains(className) ) {
      return el;
    } else {
      while ( el = el.parentNode ) {
        if ( el.classList && el.classList.contains(className) ) {
          return el;
        }
      }
    }

    return false;
  }

  function getPosition(e) {
    var posx = 0;
    var posy = 0;

    if (!e) var e = window.event;
    
    if (e.pageX || e.pageY) {
      posx = e.pageX;
      posy = e.pageY;
    } else if (e.clientX || e.clientY) {
      posx = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
      posy = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
    }

    return {
      x: posx,
      y: posy
    }
  }

  //
  // C O R E    F U N C T I O N S
  //
  
  var contextMenuClassName = "context-menu";
  var contextMenuItemClassName = "context-menu__item";
  var contextMenuLinkClassName = "context-menu__link";
  var contextMenuActive = "context-menu--active";

  var taskItemClassName = "macroDiv";
  var taskItemInContext;

  var clickCoords;
  var clickCoordsX;
  var clickCoordsY;

  var menu = document.querySelector(".context-menu");
  var menuItems = menu.querySelectorAll(".context-menu__item");
  var menuState = 0;
  var menuWidth;
  var menuHeight;
  var menuPosition;
  var menuPositionX;
  var menuPositionY;

  var windowWidth;
  var windowHeight;

  function initContextMenu() {
    contextListener();
    clickListener();
    keyupListener();
    resizeListener();
  }

  function contextListener() {
    document.addEventListener( "contextmenu", function(e) {
      taskItemInContext = clickInsideElement( e, taskItemClassName );

      if ( taskItemInContext ) {
        e.preventDefault();
        toggleMenuOn();
        positionMenu(e);
      } else {
        taskItemInContext = null;
        toggleMenuOff();
      }
    });
  }

  function clickListener() {
    document.addEventListener( "click", function(e) {
      var clickeElIsLink = clickInsideElement( e, contextMenuLinkClassName );

      if ( clickeElIsLink ) {
        e.preventDefault();
        menuItemListener( clickeElIsLink );
      } else {
        var button = e.which || e.button;
        if ( button === 1 ) {
          toggleMenuOff();
        }
      }
    });
  }

  function keyupListener() {
    window.onkeyup = function(e) {
      if ( e.keyCode === 27 ) {
        toggleMenuOff();
      }
    }
  }

  function resizeListener() {
    window.onresize = function(e) {
      toggleMenuOff();
    };
  }

  function toggleMenuOn() {
    if ( menuState !== 1 ) {
      menuState = 1;
      menu.classList.add( contextMenuActive );
    }
  }

  function toggleMenuOff() {
    if ( menuState !== 0 ) {
      menuState = 0;
      menu.classList.remove( contextMenuActive );
    }
  }

  function positionMenu(e) {
    clickCoords = getPosition(e);
    clickCoordsX = clickCoords.x;
    clickCoordsY = clickCoords.y;

    menuWidth = menu.offsetWidth + 4;
    menuHeight = menu.offsetHeight + 4;

    windowWidth = window.innerWidth;
    windowHeight = window.innerHeight;

    if ( (windowWidth - clickCoordsX) < menuWidth ) {
      menu.style.left = windowWidth - menuWidth + "px";
    } else {
      menu.style.left = clickCoordsX + "px";
    }

    if ( (windowHeight - clickCoordsY) < menuHeight ) {
      menu.style.top = windowHeight - menuHeight + "px";
    } else {
      menu.style.top = clickCoordsY + "px";
    }
  }

  function menuItemListener( link ) {
    console.log( "Macro name - " + taskItemInContext.getAttribute("data-id") + ", Macro action - " + link.getAttribute("data-action"));
    toggleMenuOff();
    macroActionOnRightClick(taskItemInContext.getAttribute("data-id"), link.getAttribute("data-action"), 
            taskItemInContext.getAttribute("data-sequence"), taskItemInContext.getAttribute("data-notes"),
            taskItemInContext.getAttribute("data-time"), taskItemInContext.getAttribute("data-LSBF"));
  }

  initContextMenu();
  
  

})();