The Tor Browser / file comparison
comparison: browser/metro/base/content/contenthandlers/PluginHelper.js
browser/metro/base/content/contenthandlers/PluginHelper.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:69278b5f3b7f |
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 "use strict"; | |
| 5 | |
| 6 dump("### PluginHelper.js loaded\n"); | |
| 7 | |
| 8 /** | |
| 9 * Handle events generated by plugin click-to-play code. | |
| 10 * | |
| 11 * This "PluginBindingAttached" fires when a "pluginProblem" XBL binding is | |
| 12 * created. This binding overlays plugin content when the plugin is missing, | |
| 13 * blocked, click-to-play, or replaced by a "preview" extension plugin like | |
| 14 * Shumway or PDF.js. | |
| 15 */ | |
| 16 var PluginHelper = { | |
| 17 init: function () { | |
| 18 addEventListener("PluginBindingAttached", this, true, true); | |
| 19 }, | |
| 20 | |
| 21 handleEvent: function handleEvent(aEvent) { | |
| 22 switch (aEvent.type) { | |
| 23 case "PluginBindingAttached": | |
| 24 this.handlePluginBindingAttached(aEvent); | |
| 25 break; | |
| 26 } | |
| 27 }, | |
| 28 | |
| 29 getPluginMimeType: function (plugin) { | |
| 30 var tagMimetype = plugin.actualType; | |
| 31 | |
| 32 if (tagMimetype == "") { | |
| 33 tagMimetype = plugin.type; | |
| 34 } | |
| 35 return tagMimetype; | |
| 36 }, | |
| 37 | |
| 38 handlePluginBindingAttached: function (aEvent) { | |
| 39 let plugin = aEvent.target; | |
| 40 let doc = plugin.ownerDocument; | |
| 41 let overlay = doc.getAnonymousElementByAttribute(plugin, "anonid", "main"); | |
| 42 if (!overlay || overlay._bindingHandled) { | |
| 43 return; | |
| 44 } | |
| 45 overlay._bindingHandled = true; | |
| 46 | |
| 47 let eventType = PluginHelper._getBindingType(plugin); | |
| 48 if (!eventType) { | |
| 49 return; | |
| 50 } | |
| 51 | |
| 52 switch (eventType) { | |
| 53 case "PluginPlayPreview": { | |
| 54 // Load the "preview" handler (an extension plugin like Shumway or PDF.js). | |
| 55 let previewContent = doc.getAnonymousElementByAttribute(plugin, "class", "previewPluginContent"); | |
| 56 let pluginHost = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost); | |
| 57 let mimeType = PluginHelper.getPluginMimeType(plugin); | |
| 58 let playPreviewInfo = pluginHost.getPlayPreviewInfo(mimeType); | |
| 59 | |
| 60 let iframe = previewContent.getElementsByClassName("previewPluginContentFrame")[0]; | |
| 61 if (!iframe) { | |
| 62 // lazy initialization of the iframe | |
| 63 iframe = doc.createElementNS("http://www.w3.org/1999/xhtml", "iframe"); | |
| 64 iframe.className = "previewPluginContentFrame"; | |
| 65 previewContent.appendChild(iframe); | |
| 66 } | |
| 67 iframe.src = playPreviewInfo.redirectURL; | |
| 68 break; | |
| 69 } | |
| 70 | |
| 71 case "PluginNotFound": { | |
| 72 // TODO: Display a message about missing plugins (bug 936907) | |
| 73 break; | |
| 74 } | |
| 75 } | |
| 76 }, | |
| 77 | |
| 78 // Helper to get the binding handler type from a plugin object | |
| 79 _getBindingType: function(plugin) { | |
| 80 if (!(plugin instanceof Ci.nsIObjectLoadingContent)) | |
| 81 return null; | |
| 82 | |
| 83 switch (plugin.pluginFallbackType) { | |
| 84 case Ci.nsIObjectLoadingContent.PLUGIN_UNSUPPORTED: | |
| 85 return "PluginNotFound"; | |
| 86 case Ci.nsIObjectLoadingContent.PLUGIN_PLAY_PREVIEW: | |
| 87 return "PluginPlayPreview"; | |
| 88 default: | |
| 89 // Metro Firefox does not yet support other fallback types. | |
| 90 return null; | |
| 91 } | |
| 92 }, | |
| 93 }; | |
| 94 | |
| 95 PluginHelper.init(); |
