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www/bower_components/mousetrap/tests/libs/key-event.js

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+(function(window, document) {
+    var KeyEvent = function(data, type) {
+        this.keyCode = 'keyCode' in data ? data.keyCode : 0;
+        this.charCode = 'charCode' in data ? data.charCode : 0;
+
+        var modifiers = 'modifiers' in data ? data.modifiers : [];
+
+        this.ctrlKey = false;
+        this.metaKey = false;
+        this.altKey = false;
+        this.shiftKey = false;
+
+        for (var i = 0; i < modifiers.length; i++) {
+            this[modifiers[i] + 'Key'] = true;
+        }
+
+        this.type = type || 'keypress';
+    };
+
+    KeyEvent.prototype.toNative = function() {
+        var event = document.createEventObject ? document.createEventObject() : document.createEvent('Events');
+
+        if (event.initEvent) {
+            event.initEvent(this.type, true, true);
+        }
+
+        event.keyCode = this.keyCode;
+        event.which = this.charCode || this.keyCode;
+        event.shiftKey = this.shiftKey;
+        event.metaKey = this.metaKey;
+        event.altKey = this.altKey;
+        event.ctrlKey = this.ctrlKey;
+
+        return event;
+    };
+
+    KeyEvent.prototype.fire = function(element) {
+        var event = this.toNative();
+        if (element.dispatchEvent) {
+            element.dispatchEvent(event);
+            return;
+        }
+
+        element.fireEvent('on' + this.type, event);
+    };
+
+    // simulates complete key event as if the user pressed the key in the browser
+    // triggers a keydown, then a keypress, then a keyup
+    KeyEvent.simulate = function(charCode, keyCode, modifiers, element, repeat, options) {
+        if (modifiers === undefined) {
+            modifiers = [];
+        }
+
+        if (element === undefined) {
+            element = document;
+        }
+
+        if (repeat === undefined) {
+            repeat = 1;
+        }
+
+        if (options === undefined) {
+            options = {};
+        }
+
+        // Re-target the element so that `event.target` becomes the shadow host. See:
+        // https://developers.google.com/web/fundamentals/web-components/shadowdom#events
+        // This is a bit of a lie because true events would re-target the event target both for
+        // closed and open shadow trees. `KeyEvent` is not a true event and will fire the event
+        // directly from the shadow host for closed shadow trees. For open trees, this would make
+        // the tests fail as the actual event that will be eventually dispatched would have an
+        // incorrect `Event.composedPath()` starting with the shadow host instead of the
+        // initial event target.
+        if (options.shadowHost && options.shadowHost.shadowRoot === null) {
+            // closed shadow dom
+            element = options.shadowHost;
+        }
+
+        var modifierToKeyCode = {
+            'shift': 16,
+            'ctrl': 17,
+            'alt': 18,
+            'meta': 91
+        };
+
+        // if the key is a modifier then take it out of the regular
+        // keypress/keydown
+        if (keyCode == 16 || keyCode == 17 || keyCode == 18 || keyCode == 91) {
+            repeat = 0;
+        }
+
+        var modifiersToInclude = [];
+        var keyEvents = [];
+
+        // modifiers would go down first
+        for (var i = 0; i < modifiers.length; i++) {
+            modifiersToInclude.push(modifiers[i]);
+            keyEvents.push(new KeyEvent({
+                charCode: 0,
+                keyCode: modifierToKeyCode[modifiers[i]],
+                modifiers: modifiersToInclude
+            }, 'keydown'));
+        }
+
+        // @todo factor in duration for these
+        while (repeat > 0) {
+            keyEvents.push(new KeyEvent({
+                charCode: 0,
+                keyCode: keyCode,
+                modifiers: modifiersToInclude
+            }, 'keydown'));
+
+            keyEvents.push(new KeyEvent({
+                charCode: charCode,
+                keyCode: charCode,
+                modifiers: modifiersToInclude
+            }, 'keypress'));
+
+            repeat--;
+        }
+
+        keyEvents.push(new KeyEvent({
+            charCode: 0,
+            keyCode: keyCode,
+            modifiers: modifiersToInclude
+        }, 'keyup'));
+
+        // now lift up the modifier keys
+        for (i = 0; i < modifiersToInclude.length; i++) {
+            var modifierKeyCode = modifierToKeyCode[modifiersToInclude[i]];
+            modifiersToInclude.splice(i, 1);
+            keyEvents.push(new KeyEvent({
+                charCode: 0,
+                keyCode: modifierKeyCode,
+                modifiers: modifiersToInclude
+            }, 'keyup'));
+        }
+
+        for (i = 0; i < keyEvents.length; i++) {
+            // console.log('firing', keyEvents[i].type, keyEvents[i].keyCode, keyEvents[i].charCode);
+            keyEvents[i].fire(element);
+        }
+    };
+
+    window.KeyEvent = KeyEvent;
+
+    // expose as a common js module
+    if (typeof module !== 'undefined' && module.exports) {
+        module.exports = KeyEvent;
+    }
+
+    // expose KeyEvent as an AMD module
+    if (typeof define === 'function' && define.amd) {
+        define(function() {
+            return KeyEvent;
+        });
+    }
+}) (typeof window !== 'undefined' ? window : null, typeof  window !== 'undefined' ? document : null);