1 <!-- 2 -- Copyright 2013 The Chromium Authors. All rights reserved. 3 -- Use of this source code is governed by a BSD-style license that can be 4 -- found in the LICENSE file. 5 --> 6 7 <polymer-element name="kb-key-sequence" 8 attributes="keys hintTexts keyCodes invert"> 9 <template> 10 <style> 11 :host { 12 display: none; 13 } 14 </style> 15 </template> 16 <script> 17 (function() { 18 19 var metadata = null; 20 21 function getKeyCodeAndModifiers(keyCodeIndex) { 22 if (!metadata) 23 metadata = document.createElement('kb-key-codes'); 24 return metadata.GetKeyCodeAndModifiers(keyCodeIndex); 25 } 26 27 Polymer('kb-key-sequence', { 28 /** 29 * Generates the DOM structure to replace (expand) this kb-key-sequence. 30 */ 31 generateDom: function() { 32 var replacement = document.createDocumentFragment(); 33 var newKeys = this.getAttribute('keys'); 34 var newHintTexts = this.getAttribute('hintTexts'); 35 var keyCodes = this.getAttribute('hintCodes') || newKeys; 36 var invert = this.getAttribute('invert'); 37 if (newKeys) { 38 if (newHintTexts && newKeys.length != newHintTexts.length) { 39 console.error('keys and hintTexts do not match'); 40 return; 41 } 42 if (keyCodes && newKeys.length != keyCodes.length) { 43 console.error('keys and keyCodes do not match'); 44 return; 45 } 46 47 for (var i = 0; i < newKeys.length; i++) { 48 var key = document.createElement('kb-key'); 49 key.innerText = newKeys[i]; 50 key.accents = newKeys[i]; 51 if (newHintTexts) 52 key.hintText = newHintTexts[i]; 53 var keyCodeIndex = keyCodes[i]; 54 if (invert) { 55 key.invert = true; 56 key.char = newKeys[i]; 57 keyCodeIndex = key.hintText; 58 } 59 var state = getKeyCodeAndModifiers(keyCodeIndex); 60 if (state) { 61 key.keyCode = state.keyCode; 62 key.keyName = state.keyName; 63 key.shiftModifier = state.shiftModifier; 64 } 65 replacement.appendChild(key); 66 } 67 } 68 return replacement; 69 } 70 }); 71 })(); 72 </script> 73 </polymer-element> 74
