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bower_components/iron-test-helpers/mock-interactions.js 4.61 KB
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  /**
   * @license
   * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
   * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
   * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
   * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
   * Code distributed by Google as part of the polymer project is also
   * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
   */
  
  (function(global) {
    'use strict';
  
    var HAS_NEW_MOUSE = (function() {
      var has = false;
      try {
        has = Boolean(new MouseEvent('x'));
      } catch (_) {}
      return has;
    })();
  
    function middleOfNode(node) {
      var bcr = node.getBoundingClientRect();
      return {
        y: bcr.top + (bcr.height / 2),
        x: bcr.left + (bcr.width / 2)
      };
    }
  
    function topLeftOfNode(node) {
      var bcr = node.getBoundingClientRect();
      return {
        y: bcr.top,
        x: bcr.left
      };
    }
  
    function makeEvent(type, xy, node) {
      var props = {
        bubbles: true,
        cancelable: true,
        clientX: xy.x,
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        clientY: xy.y,
        // Make this a primary input.
        buttons: 1 // http://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/buttons
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      };
      var e;
      var mousetype = type === 'tap' ? 'click' : 'mouse' + type;
      if (HAS_NEW_MOUSE) {
        e = new MouseEvent(mousetype, props);
      } else {
        e = document.createEvent('MouseEvent');
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        e.initMouseEvent(
          mousetype, props.bubbles, props.cancelable,
          null, /* view */
          null, /* detail */
          0,    /* screenX */
          0,    /* screenY */
          props.clientX, props.clientY,
          false, /*ctrlKey */
          false, /*altKey */
          false, /*shiftKey */
          false, /*metaKey */
          0,     /*button */
          null   /*relatedTarget*/);
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      }
      node.dispatchEvent(e);
    }
  
    function down(node, xy) {
      xy = xy || middleOfNode(node);
      makeEvent('down', xy, node);
    }
  
    function move(node, fromXY, toXY, steps) {
      steps = steps || 5;
      var dx = Math.round((fromXY.x - toXY.x) / steps);
      var dy = Math.round((fromXY.y - toXY.y) / steps);
      var xy = {
        x: fromXY.x,
        y: fromXY.y
      };
      for (var i = steps; i > 0; i--) {
        makeEvent('move', xy, node);
        xy.x += dx;
        xy.y += dy;
      }
      makeEvent('move', {
        x: toXY.x,
        y: toXY.y
      }, node);
    }
  
    function up(node, xy) {
      xy = xy || middleOfNode(node);
      makeEvent('up', xy, node);
    }
  
    function tap(node) {
      // Respect nodes that are disabled in the UI.
      if (window.getComputedStyle(node)['pointer-events'] === 'none')
        return;
      var xy = middleOfNode(node);
      down(node, xy);
      up(node, xy);
      makeEvent('tap', xy, node);
    }
  
    function focus(target) {
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      Polymer.Base.fire('focus', {}, {
        bubbles: false,
        node: target
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      });
    }
  
    function blur(target) {
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      Polymer.Base.fire('blur', {}, {
        bubbles: false,
        node: target
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      });
    }
  
    function downAndUp(target, callback) {
      down(target);
      Polymer.Base.async(function() {
        up(target);
        tap(target);
  
        callback && callback();
      });
    }
  
    function track(target, dx, dy, steps) {
      dx = dx | 0;
      dy = dy | 0;
      steps = steps || 5;
      down(target);
      var xy = middleOfNode(target);
      var xy2 = {
        x: xy.x + dx,
        y: xy.y + dy
      };
      move(target, xy, xy2, steps);
      up(target, xy2);
    }
  
    function keyboardEventFor(type, keyCode) {
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      var event = new CustomEvent(type, {
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        bubbles: true,
        cancelable: true
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      });
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      event.keyCode = keyCode;
      event.code = keyCode;
  
      return event;
    }
  
    function keyEventOn(target, type, keyCode) {
      target.dispatchEvent(keyboardEventFor(type, keyCode));
    }
  
    function keyDownOn(target, keyCode) {
      keyEventOn(target, 'keydown', keyCode);
    }
  
    function keyUpOn(target, keyCode) {
      keyEventOn(target, 'keyup', keyCode);
    }
  
    function pressAndReleaseKeyOn(target, keyCode) {
      keyDownOn(target, keyCode);
      Polymer.Base.async(function() {
        keyUpOn(target, keyCode);
      }, 1);
    }
  
    function pressEnter(target) {
      pressAndReleaseKeyOn(target, 13);
    }
  
    function pressSpace(target) {
      pressAndReleaseKeyOn(target, 32);
    }
  
    global.MockInteractions = {
      focus: focus,
      blur: blur,
      down: down,
      up: up,
      downAndUp: downAndUp,
      tap: tap,
      track: track,
      pressAndReleaseKeyOn: pressAndReleaseKeyOn,
      pressEnter: pressEnter,
      pressSpace: pressSpace,
      keyDownOn: keyDownOn,
      keyUpOn: keyUpOn,
      middleOfNode: middleOfNode,
      topLeftOfNode: topLeftOfNode
    };
  })(this);