polygerrit-ui/app/behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior.html

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Copyright (C) 2016 The Android Open Source Project

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

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<link rel="import" href="../../bower_components/polymer/polymer.html">
<link rel="import" href="../../bower_components/iron-a11y-keys-behavior/iron-a11y-keys-behavior.html">

<script>
(function(window) {
  'use strict';

  // Must be declared outside behavior implementation to be accessed inside
  // behavior functions.

  /** @return {!Object} */
  const getKeyboardEvent = function(e) {
    e = Polymer.dom(e.detail ? e.detail.keyboardEvent : e);
    // When e is a keyboardEvent, e.event is not null.
    if (e.event) { e = e.event; }
    return e;
  };

  window.Gerrit = window.Gerrit || {};

  /** @polymerBehavior KeyboardShortcutBehavior */
  Gerrit.KeyboardShortcutBehavior = [{
    modifierPressed(e) {
      e = getKeyboardEvent(e);
      return e.altKey || e.ctrlKey || e.metaKey || e.shiftKey;
    },

    isModifierPressed(e, modifier) {
      return getKeyboardEvent(e)[modifier];
    },

    shouldSuppressKeyboardShortcut(e) {
      e = getKeyboardEvent(e);
      const tagName = Polymer.dom(e).rootTarget.tagName;
      if (tagName === 'INPUT' || tagName === 'TEXTAREA') {
        return true;
      }
      for (let i = 0; e.path && i < e.path.length; i++) {
        if (e.path[i].tagName === 'GR-OVERLAY') { return true; }
      }
      return false;
    },

    // Alias for getKeyboardEvent.
    /** @return {!Object} */
    getKeyboardEvent(e) {
      return getKeyboardEvent(e);
    },

    getRootTarget(e) {
      return Polymer.dom(getKeyboardEvent(e)).rootTarget;
    },
  },
    Polymer.IronA11yKeysBehavior,
  ];
})(window);
</script>