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https://github.com/google/blockly.git
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e2ee3aa9c9
Moving closure compilation into the build file. Fixing up goog.requires for accessible blockly. Adding accessible to the build script.
59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
/**
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* AccessibleBlockly
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*
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* Copyright 2016 Google Inc.
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* https://developers.google.com/blockly/
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*
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* Licensed under the Apache License, Version 2.0 (the 'License');
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an 'AS IS' BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview Angular2 Service for handling keyboard input.
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*
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* @author sll@google.com (Sean Lip)
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*/
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goog.provide('blocklyApp.KeyboardInputService');
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blocklyApp.KeyboardInputService = ng.core.Class({
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constructor: [function() {
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// Default custom actions for global keystrokes. The keys of this object
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// are string representations of the key codes.
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this.keysToActions = {};
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// Override for the default keysToActions mapping (e.g. in a modal
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// context).
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this.keysToActionsOverride = null;
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// Attach a keydown handler to the entire window.
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var that = this;
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document.addEventListener('keydown', function(evt) {
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var stringifiedKeycode = String(evt.keyCode);
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var actionsObject = that.keysToActionsOverride || that.keysToActions;
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if (actionsObject.hasOwnProperty(stringifiedKeycode)) {
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actionsObject[stringifiedKeycode](evt);
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}
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});
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}],
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setOverride: function(newKeysToActions) {
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this.keysToActionsOverride = newKeysToActions;
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},
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addOverride: function(keyCode, action) {
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this.keysToActionsOverride[keyCode] = action;
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},
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clearOverride: function() {
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this.keysToActionsOverride = null;
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}
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});
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