| <!DOCTYPE html> |
| <!-- |
| Copyright (c) 2014 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/base/base.html"> |
| <link rel="import" href="/base/extension_registry.html"> |
| |
| <script> |
| 'use strict'; |
| |
| /** |
| * @fileoverview Allows custom highlighting to be added to the full model track. |
| */ |
| tr.exportTo('tr.ui.tracks', function() { |
| |
| /** |
| * Highlights cetrain features of the model. |
| * @constructor |
| */ |
| function Highlighter(viewport) { |
| if (viewport === undefined) { |
| throw new Error('viewport must be provided'); |
| } |
| this.viewport_ = viewport; |
| }; |
| |
| Highlighter.prototype = { |
| __proto__: Object.prototype, |
| |
| processModel: function(model) { |
| throw new Error('processModel implementation missing'); |
| }, |
| |
| drawHighlight: function(ctx, dt, viewLWorld, viewRWorld, viewHeight) { |
| throw new Error('drawHighlight implementation missing'); |
| } |
| }; |
| |
| |
| var options = new tr.b.ExtensionRegistryOptions(tr.b.BASIC_REGISTRY_MODE); |
| options.defaultMetadata = {}; |
| options.mandatoryBaseClass = Highlighter; |
| tr.b.decorateExtensionRegistry(Highlighter, options); |
| |
| return { |
| Highlighter: Highlighter |
| }; |
| }); |
| </script> |
| |
