Remove Polymer 0.5.

third_party/polymer/components-chromium/core-a11y-keys/core-a11y-keys-extracted.js

-
-  (function() {
-    /*
-     * Chrome uses an older version of DOM Level 3 Keyboard Events
-     *
-     * Most keys are labeled as text, but some are Unicode codepoints.
-     * Values taken from: http://www.w3.org/TR/2007/WD-DOM-Level-3-Events-20071221/keyset.html#KeySet-Set
-     */
-    var KEY_IDENTIFIER = {
-      'U+0009': 'tab',
-      'U+001B': 'esc',
-      'U+0020': 'space',
-      'U+002A': '*',
-      'U+0030': '0',
-      'U+0031': '1',
-      'U+0032': '2',
-      'U+0033': '3',
-      'U+0034': '4',
-      'U+0035': '5',
-      'U+0036': '6',
-      'U+0037': '7',
-      'U+0038': '8',
-      'U+0039': '9',
-      'U+0041': 'a',
-      'U+0042': 'b',
-      'U+0043': 'c',
-      'U+0044': 'd',
-      'U+0045': 'e',
-      'U+0046': 'f',
-      'U+0047': 'g',
-      'U+0048': 'h',
-      'U+0049': 'i',
-      'U+004A': 'j',
-      'U+004B': 'k',
-      'U+004C': 'l',
-      'U+004D': 'm',
-      'U+004E': 'n',
-      'U+004F': 'o',
-      'U+0050': 'p',
-      'U+0051': 'q',
-      'U+0052': 'r',
-      'U+0053': 's',
-      'U+0054': 't',
-      'U+0055': 'u',
-      'U+0056': 'v',
-      'U+0057': 'w',
-      'U+0058': 'x',
-      'U+0059': 'y',
-      'U+005A': 'z',
-      'U+007F': 'del'
-    };
-
-    /*
-     * Special table for KeyboardEvent.keyCode.
-     * KeyboardEvent.keyIdentifier is better, and KeyBoardEvent.key is even better than that
-     *
-     * Values from: https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent.keyCode#Value_of_keyCode
-     */
-    var KEY_CODE = {
-      9: 'tab',
-      13: 'enter',
-      27: 'esc',
-      33: 'pageup',
-      34: 'pagedown',
-      35: 'end',
-      36: 'home',
-      32: 'space',
-      37: 'left',
-      38: 'up',
-      39: 'right',
-      40: 'down',
-      46: 'del',
-      106: '*'
-    };
-
-    /*
-     * KeyboardEvent.key is mostly represented by printable character made by the keyboard, with unprintable keys labeled
-     * nicely.
-     *
-     * However, on OS X, Alt+char can make a Unicode character that follows an Apple-specific mapping. In this case, we
-     * fall back to .keyCode.
-     */
-    var KEY_CHAR = /[a-z0-9*]/;
-
-    function transformKey(key) {
-      var validKey = '';
-      if (key) {
-        var lKey = key.toLowerCase();
-        if (lKey.length == 1) {
-          if (KEY_CHAR.test(lKey)) {
-            validKey = lKey;
-          }
-        } else if (lKey == 'multiply') {
-          // numpad '*' can map to Multiply on IE/Windows
-          validKey = '*';
-        } else {
-          validKey = lKey;
-        }
-      }
-      return validKey;
-    }
-
-    var IDENT_CHAR = /U\+/;
-    function transformKeyIdentifier(keyIdent) {
-      var validKey = '';
-      if (keyIdent) {
-        if (IDENT_CHAR.test(keyIdent)) {
-          validKey = KEY_IDENTIFIER[keyIdent];
-        } else {
-          validKey = keyIdent.toLowerCase();
-        }
-      }
-      return validKey;
-    }
-
-    function transformKeyCode(keyCode) {
-      var validKey = '';
-      if (Number(keyCode)) {
-        if (keyCode >= 65 && keyCode <= 90) {
-          // ascii a-z
-          // lowercase is 32 offset from uppercase
-          validKey = String.fromCharCode(32 + keyCode);
-        } else if (keyCode >= 112 && keyCode <= 123) {
-          // function keys f1-f12
-          validKey = 'f' + (keyCode - 112);
-        } else if (keyCode >= 48 && keyCode <= 57) {
-          // top 0-9 keys
-          validKey = String(48 - keyCode);
-        } else if (keyCode >= 96 && keyCode <= 105) {
-          // num pad 0-9
-          validKey = String(96 - keyCode);
-        } else {
-          validKey = KEY_CODE[keyCode];
-        }
-      }
-      return validKey;
-    }
-
-    function keyboardEventToKey(ev) {
-      // fall back from .key, to .keyIdentifier, to .keyCode, and then to .detail.key to support artificial keyboard events
-      var normalizedKey = transformKey(ev.key) || transformKeyIdentifier(ev.keyIdentifier) || transformKeyCode(ev.keyCode) || transformKey(ev.detail.key) || '';
-      return {
-        shift: ev.shiftKey,
-        ctrl: ev.ctrlKey,
-        meta: ev.metaKey,
-        alt: ev.altKey,
-        key: normalizedKey
-      };
-    }
-
-    /*
-     * Input: ctrl+shift+f7 => {ctrl: true, shift: true, key: 'f7'}
-     * ctrl/space => {ctrl: true} || {key: space}
-     */
-    function stringToKey(keyCombo) {
-      var keys = keyCombo.split('+');
-      var keyObj = Object.create(null);
-      keys.forEach(function(key) {
-        if (key == 'shift') {
-          keyObj.shift = true;
-        } else if (key == 'ctrl') {
-          keyObj.ctrl = true;
-        } else if (key == 'alt') {
-          keyObj.alt = true;
-        } else {
-          keyObj.key = key;
-        }
-      });
-      return keyObj;
-    }
-
-    function keyMatches(a, b) {
-      return Boolean(a.alt) == Boolean(b.alt) && Boolean(a.ctrl) == Boolean(b.ctrl) && Boolean(a.shift) == Boolean(b.shift) && a.key === b.key;
-    }
-
-    /**
-     * Fired when a keycombo in `keys` is pressed.
-     *
-     * @event keys-pressed
-     */
-    function processKeys(ev) {
-      var current = keyboardEventToKey(ev);
-      for (var i = 0, dk; i < this._desiredKeys.length; i++) {
-        dk = this._desiredKeys[i];
-        if (keyMatches(dk, current)) {
-          ev.preventDefault();
-          ev.stopPropagation();
-          this.fire('keys-pressed', current, this, false);
-          break;
-        }
-      }
-    }
-
-    function listen(node, handler) {
-      if (node && node.addEventListener) {
-        node.addEventListener('keydown', handler);
-      }
-    }
-
-    function unlisten(node, handler) {
-      if (node && node.removeEventListener) {
-        node.removeEventListener('keydown', handler);
-      }
-    }
-
-    Polymer('core-a11y-keys', {
-      created: function() {
-        this._keyHandler = processKeys.bind(this);
-      },
-      attached: function() {
-        if (!this.target) {
-          this.target = this.parentNode;
-        }
-        listen(this.target, this._keyHandler);
-      },
-      detached: function() {
-        unlisten(this.target, this._keyHandler);
-      },
-      publish: {
-        /**
-         * The set of key combinations to listen for.
-         *
-         * @attribute keys
-         * @type string (keys syntax)
-         * @default ''
-         */
-        keys: '',
-        /**
-         * The node that will fire keyboard events.
-         * Default to this element's parentNode unless one is assigned
-         *
-         * @attribute target
-         * @type Node
-         * @default this.parentNode
-         */
-        target: null
-      },
-      keysChanged: function() {
-        // * can have multiple mappings: shift+8, * on numpad or Multiply on numpad
-        var normalized = this.keys.replace('*', '* shift+*');
-        this._desiredKeys = normalized.toLowerCase().split(' ').map(stringToKey);
-      },
-      targetChanged: function(oldTarget) {
-        unlisten(oldTarget, this._keyHandler);
-        listen(this.target, this._keyHandler);
-      }
-    });
-  })();