third_party/google_input_tools/src/chrome/os/inputview/m17nmodel.js

   1 // Copyright 2014 The ChromeOS IME Authors. All Rights Reserved.
   2 // limitations under the License.
   3 // See the License for the specific language governing permissions and
   4 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   5 // distributed under the License is distributed on an "AS-IS" BASIS,
   6 // Unless required by applicable law or agreed to in writing, software
   7 //
   8 //      http://www.apache.org/licenses/LICENSE-2.0
   9 //
  10 // You may obtain a copy of the License at
  11 // you may not use this file except in compliance with the License.
  12 // Licensed under the Apache License, Version 2.0 (the "License");
  13 //
  14 goog.provide('i18n.input.chrome.inputview.M17nModel');
  15
  16 goog.require('goog.events.EventHandler');
  17 goog.require('goog.events.EventTarget');
  18 goog.require('i18n.input.chrome.inputview.SpecNodeName');
  19 goog.require('i18n.input.chrome.inputview.content.util');
  20 goog.require('i18n.input.chrome.inputview.events.ConfigLoadedEvent');
  21 goog.require('i18n.input.chrome.vk.KeyCode');
  22 goog.require('i18n.input.chrome.vk.Model');
  23
  24
  25
  26 /**
  27  * The model to legacy cloud vk configuration.
  28  *
  29  * @constructor
  30  * @extends {goog.events.EventTarget}
  31  */
  32 i18n.input.chrome.inputview.M17nModel = function() {
  33   goog.base(this);
  34
  35   /**
  36    * The event handler.
  37    *
  38    * @type {!goog.events.EventHandler}
  39    * @private
  40    */
  41   this.handler_ = new goog.events.EventHandler(this);
  42
  43   /**
  44    * The model for cloud vk.
  45    *
  46    * @type {!i18n.input.chrome.vk.Model}
  47    * @private
  48    */
  49   this.model_ = new i18n.input.chrome.vk.Model();
  50   this.handler_.listen(this.model_,
  51       i18n.input.chrome.vk.EventType.LAYOUT_LOADED,
  52       this.onLayoutLoaded_);
  53 };
  54 goog.inherits(i18n.input.chrome.inputview.M17nModel,
  55     goog.events.EventTarget);
  56
  57
  58 /**
  59  * The active layout view.
  60  *
  61  * @type {!i18n.input.chrome.vk.ParsedLayout}
  62  * @private
  63  */
  64 i18n.input.chrome.inputview.M17nModel.prototype.layoutView_;
  65
  66
  67 /**
  68  * Loads the configuration.
  69  *
  70  * @param {string} lang The m17n keyboard layout code (with 'm17n:' prefix).
  71  */
  72 i18n.input.chrome.inputview.M17nModel.prototype.loadConfig = function(lang) {
  73   var m17nMatches = lang.match(/^m17n:(.*)/);
  74   if (m17nMatches && m17nMatches[1]) {
  75     this.model_.loadLayout(m17nMatches[1]);
  76   }
  77 };
  78
  79
  80 /**
  81  * Callback when legacy model is loaded.
  82  *
  83  * @param {!i18n.input.chrome.vk.LayoutEvent} e The event.
  84  * @private
  85  */
  86 i18n.input.chrome.inputview.M17nModel.prototype.onLayoutLoaded_ = function(
  87     e) {
  88   var layoutView = /** @type {!i18n.input.chrome.vk.ParsedLayout} */
  89       (e.layoutView);
  90   this.layoutView_ = layoutView;
  91   var is102 = layoutView.view.is102;
  92   var codes = is102 ? i18n.input.chrome.vk.KeyCode.CODES102 :
  93       i18n.input.chrome.vk.KeyCode.CODES101;
  94   var keyCount = is102 ? 48 : 47;
  95   var keyCharacters = [];
  96   for (var i = 0; i < keyCount; i++) {
  97     var characters = this.findCharacters_(layoutView.view.mappings,
  98         codes[i]);
  99     keyCharacters.push(characters);
 100   }
 101   keyCharacters.push(['\u0020', '\u0020']);
 102   var hasAltGrKey = !!layoutView.view.mappings['c'] &&
 103       layoutView.view.mappings['c'] != layoutView.view.mappings[''];
 104   var skvPrefix = is102 ? '102kbd-k-' : '101kbd-k-';
 105   var skPrefix = layoutView.view.id + '-k-';
 106   var data = i18n.input.chrome.inputview.content.util.createData(keyCharacters,
 107       skvPrefix, is102, hasAltGrKey);
 108   if (data) {
 109     data[i18n.input.chrome.inputview.SpecNodeName.TITLE] =
 110         layoutView.view.title;
 111     data[i18n.input.chrome.inputview.SpecNodeName.ID] =
 112         'm17n:' + e.layoutCode;
 113     this.dispatchEvent(new i18n.input.chrome.inputview.events.
 114         ConfigLoadedEvent(data));
 115   }
 116 };
 117
 118
 119 /**
 120  * Finds out the characters for the key.
 121  *
 122  * @param {!Object} mappings The mappings.
 123  * @param {string} code The code.
 124  * @return {!Array.<string>} The characters for the code.
 125  * @private
 126  */
 127 i18n.input.chrome.inputview.M17nModel.prototype.findCharacters_ = function(
 128     mappings, code) {
 129   var characters = [];
 130   var states = [
 131     '',
 132     's',
 133     'c',
 134     'sc',
 135     'l',
 136     'sl',
 137     'cl',
 138     'scl'
 139   ];
 140   for (var i = 0; i < states.length; i++) {
 141     if (mappings[states[i]] && mappings[states[i]][code]) {
 142       characters[i] = mappings[states[i]][code][1];
 143     } else if (code == '\u0020') {
 144       characters[i] = '\u0020';
 145     } else {
 146       characters[i] = '';
 147     }
 148   }
 149   return characters;
 150 };
 151
 152
 153 /** @override */
 154 i18n.input.chrome.inputview.M17nModel.prototype.disposeInternal = function() {
 155   goog.dispose(this.handler_);
 156
 157   goog.base(this, 'disposeInternal');
 158 };