react app

react-app/node_modules/react/lib/SyntheticMouseEvent.js

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+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule SyntheticMouseEvent
+ * @typechecks static-only
+ */
+
+'use strict';
+
+var SyntheticUIEvent = require("./SyntheticUIEvent");
+var ViewportMetrics = require("./ViewportMetrics");
+
+var getEventModifierState = require("./getEventModifierState");
+
+/**
+ * @interface MouseEvent
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+var MouseEventInterface = {
+  screenX: null,
+  screenY: null,
+  clientX: null,
+  clientY: null,
+  ctrlKey: null,
+  shiftKey: null,
+  altKey: null,
+  metaKey: null,
+  getModifierState: getEventModifierState,
+  button: function(event) {
+    // Webkit, Firefox, IE9+
+    // which:  1 2 3
+    // button: 0 1 2 (standard)
+    var button = event.button;
+    if ('which' in event) {
+      return button;
+    }
+    // IE<9
+    // which:  undefined
+    // button: 0 0 0
+    // button: 1 4 2 (onmouseup)
+    return button === 2 ? 2 : button === 4 ? 1 : 0;
+  },
+  buttons: null,
+  relatedTarget: function(event) {
+    return event.relatedTarget || (
+      ((event.fromElement === event.srcElement ? event.toElement : event.fromElement))
+    );
+  },
+  // "Proprietary" Interface.
+  pageX: function(event) {
+    return 'pageX' in event ?
+      event.pageX :
+      event.clientX + ViewportMetrics.currentScrollLeft;
+  },
+  pageY: function(event) {
+    return 'pageY' in event ?
+      event.pageY :
+      event.clientY + ViewportMetrics.currentScrollTop;
+  }
+};
+
+/**
+ * @param {object} dispatchConfig Configuration used to dispatch this event.
+ * @param {string} dispatchMarker Marker identifying the event target.
+ * @param {object} nativeEvent Native browser event.
+ * @extends {SyntheticUIEvent}
+ */
+function SyntheticMouseEvent(dispatchConfig, dispatchMarker, nativeEvent) {
+  SyntheticUIEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
+}
+
+SyntheticUIEvent.augmentClass(SyntheticMouseEvent, MouseEventInterface);
+
+module.exports = SyntheticMouseEvent;