forked from mirrors/gecko-dev
		
	MozReview-Commit-ID: LsUdsFOaJlz --HG-- extra : transplant_source : _%CF%3F%D9%8D%3C72%D2%5C%BB%23%BFP-%2A%A3%9C%FA%93
		
			
				
	
	
		
			341 lines
		
	
	
	
		
			14 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			341 lines
		
	
	
	
		
			14 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
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 * This Source Code Form is subject to the terms of the Mozilla Public
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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var gEMEHandler = {
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  get uiEnabled() {
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    let emeUIEnabled = Services.prefs.getBoolPref("browser.eme.ui.enabled");
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    // Force-disable on WinXP:
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    if (navigator.platform.toLowerCase().startsWith("win")) {
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      emeUIEnabled = emeUIEnabled && parseFloat(Services.sysinfo.get("version")) >= 6;
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    }
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    return emeUIEnabled;
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  },
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  ensureEMEEnabled: function(browser, keySystem) {
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    Services.prefs.setBoolPref("media.eme.enabled", true);
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    if (keySystem) {
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      if (keySystem.startsWith("com.adobe") &&
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          Services.prefs.getPrefType("media.gmp-eme-adobe.enabled") &&
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          !Services.prefs.getBoolPref("media.gmp-eme-adobe.enabled")) {
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        Services.prefs.setBoolPref("media.gmp-eme-adobe.enabled", true);
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      } else if (keySystem == "com.widevine.alpha" &&
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                 Services.prefs.getPrefType("media.gmp-widevinecdm.enabled") &&
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                 !Services.prefs.getBoolPref("media.gmp-widevinecdm.enabled")) {
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        Services.prefs.setBoolPref("media.gmp-widevinecdm.enabled", true);
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      }
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    }
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    browser.reload();
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  },
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  isKeySystemVisible: function(keySystem) {
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    if (!keySystem) {
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      return false;
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    }
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    if (keySystem.startsWith("com.adobe") &&
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        Services.prefs.getPrefType("media.gmp-eme-adobe.visible")) {
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      return Services.prefs.getBoolPref("media.gmp-eme-adobe.visible");
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    }
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    if (keySystem == "com.widevine.alpha" &&
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        Services.prefs.getPrefType("media.gmp-widevinecdm.visible")) {
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      return Services.prefs.getBoolPref("media.gmp-widevinecdm.visible");
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    }
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    return true;
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  },
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  getLearnMoreLink: function(msgId) {
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    let text = gNavigatorBundle.getString("emeNotifications." + msgId + ".learnMoreLabel");
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    let baseURL = Services.urlFormatter.formatURLPref("app.support.baseURL");
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    return "<label class='text-link' href='" + baseURL + "drm-content'>" +
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           text + "</label>";
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  },
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  receiveMessage: function({target: browser, data: data}) {
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    let parsedData;
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    try {
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      parsedData = JSON.parse(data);
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    } catch (ex) {
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      Cu.reportError("Malformed EME video message with data: " + data);
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      return;
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    }
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    let {status: status, keySystem: keySystem} = parsedData;
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    // Don't need to show if disabled or keysystem not visible.
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    if (!this.uiEnabled || !this.isKeySystemVisible(keySystem)) {
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      return;
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    }
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    let notificationId;
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    let buttonCallback;
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    let params = [];
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    switch (status) {
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      case "available":
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      case "cdm-created":
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        this.showPopupNotificationForSuccess(browser, keySystem);
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        // ... and bail!
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        return;
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      case "api-disabled":
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      case "cdm-disabled":
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        notificationId = "drmContentDisabled";
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        buttonCallback = gEMEHandler.ensureEMEEnabled.bind(gEMEHandler, browser, keySystem)
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        params = [this.getLearnMoreLink(notificationId)];
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        break;
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      case "cdm-insufficient-version":
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        notificationId = "drmContentCDMInsufficientVersion";
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        params = [this._brandShortName];
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        break;
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      case "cdm-not-installed":
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        notificationId = "drmContentCDMInstalling";
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        params = [this._brandShortName];
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        break;
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      case "cdm-not-supported":
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        // Not to pop up user-level notification because they cannot do anything
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        // about it.
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      case "error":
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        // Fall through and do the same for unknown messages:
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      default:
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        let typeOfIssue = status == "error" ? "error" : "message ('" + status + "')";
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        Cu.reportError("Unknown " + typeOfIssue + " dealing with EME key request: " + data);
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        return;
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    }
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    this.showNotificationBar(browser, notificationId, keySystem, params, buttonCallback);
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  },
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  showNotificationBar: function(browser, notificationId, keySystem, labelParams, callback) {
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    let box = gBrowser.getNotificationBox(browser);
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    if (box.getNotificationWithValue(notificationId)) {
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      return;
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    }
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    let msgPrefix = "emeNotifications." + notificationId + ".";
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    let msgId = msgPrefix + "message";
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    let message = labelParams.length ?
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                  gNavigatorBundle.getFormattedString(msgId, labelParams) :
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                  gNavigatorBundle.getString(msgId);
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    let buttons = [];
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    if (callback) {
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      let btnLabelId = msgPrefix + "button.label";
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      let btnAccessKeyId = msgPrefix + "button.accesskey";
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      buttons.push({
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        label: gNavigatorBundle.getString(btnLabelId),
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        accessKey: gNavigatorBundle.getString(btnAccessKeyId),
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        callback: callback
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      });
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    }
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    let iconURL = "chrome://browser/skin/drm-icon.svg#chains-black";
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    // Do a little dance to get rich content into the notification:
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    let fragment = document.createDocumentFragment();
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    let descriptionContainer = document.createElement("description");
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    descriptionContainer.innerHTML = message;
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    while (descriptionContainer.childNodes.length) {
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      fragment.appendChild(descriptionContainer.childNodes[0]);
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    }
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    box.appendNotification(fragment, notificationId, iconURL, box.PRIORITY_WARNING_MEDIUM,
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                           buttons);
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  },
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  showPopupNotificationForSuccess: function(browser, keySystem) {
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    // We're playing EME content! Remove any "we can't play because..." messages.
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    var box = gBrowser.getNotificationBox(browser);
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    ["drmContentDisabled",
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     "drmContentCDMInsufficientVersion",
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     "drmContentCDMInstalling"
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     ].forEach(function (value) {
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        var notification = box.getNotificationWithValue(value);
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        if (notification)
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          box.removeNotification(notification);
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      });
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    // Don't bother creating it if it's already there:
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    if (PopupNotifications.getNotification("drmContentPlaying", browser)) {
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      return;
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    }
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    let msgPrefix = "emeNotifications.drmContentPlaying.";
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    let msgId = msgPrefix + "message2";
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    let btnLabelId = msgPrefix + "button.label";
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    let btnAccessKeyId = msgPrefix + "button.accesskey";
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    let message = gNavigatorBundle.getFormattedString(msgId, [this._brandShortName]);
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    let anchorId = "eme-notification-icon";
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    let firstPlayPref = "browser.eme.ui.firstContentShown";
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    if (!Services.prefs.getPrefType(firstPlayPref) ||
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        !Services.prefs.getBoolPref(firstPlayPref)) {
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      document.getElementById(anchorId).setAttribute("firstplay", "true");
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      Services.prefs.setBoolPref(firstPlayPref, true);
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    } else {
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      document.getElementById(anchorId).removeAttribute("firstplay");
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    }
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    let mainAction = {
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      label: gNavigatorBundle.getString(btnLabelId),
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      accessKey: gNavigatorBundle.getString(btnAccessKeyId),
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      callback: function() { openPreferences("paneContent"); },
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      dismiss: true
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    };
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    let options = {
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      dismissed: true,
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      eventCallback: aTopic => aTopic == "swapping",
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      learnMoreURL: Services.urlFormatter.formatURLPref("app.support.baseURL") + "drm-content",
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    };
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    PopupNotifications.show(browser, "drmContentPlaying", message, anchorId, mainAction, null, options);
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  },
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  QueryInterface: XPCOMUtils.generateQI([Ci.nsIMessageListener])
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};
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XPCOMUtils.defineLazyGetter(gEMEHandler, "_brandShortName", function() {
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  return document.getElementById("bundle_brand").getString("brandShortName");
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});
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const TELEMETRY_DDSTAT_SHOWN = 0;
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const TELEMETRY_DDSTAT_SHOWN_FIRST = 1;
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const TELEMETRY_DDSTAT_CLICKED = 2;
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const TELEMETRY_DDSTAT_CLICKED_FIRST = 3;
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const TELEMETRY_DDSTAT_SOLVED = 4;
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let gDecoderDoctorHandler = {
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  shouldShowLearnMoreButton() {
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    return AppConstants.platform == "win";
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  },
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  getLabelForNotificationBox(type) {
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    if (type == "adobe-cdm-not-found" &&
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        AppConstants.platform == "win") {
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      if (AppConstants.isPlatformAndVersionAtMost("win", "5.9")) {
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        // We supply our own Learn More button so we don't need to populate the message here.
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        return gNavigatorBundle.getFormattedString("emeNotifications.drmContentDisabled.message", [""]);
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      }
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      return gNavigatorBundle.getString("decoder.noCodecs.message");
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    }
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    if (type == "adobe-cdm-not-activated" &&
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        AppConstants.platform == "win") {
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      if (AppConstants.isPlatformAndVersionAtMost("win", "5.9")) {
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        return gNavigatorBundle.getString("decoder.noCodecsXP.message");
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      }
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      return gNavigatorBundle.getString("decoder.noCodecs.message");
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    }
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    if (type == "platform-decoder-not-found") {
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      if (AppConstants.isPlatformAndVersionAtLeast("win", "6")) {
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        return gNavigatorBundle.getString("decoder.noHWAcceleration.message");
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      }
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      if (AppConstants.platform == "linux") {
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        return gNavigatorBundle.getString("decoder.noCodecsLinux.message");
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      }
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    }
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    return "";
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  },
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  receiveMessage({target: browser, data: data}) {
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    let box = gBrowser.getNotificationBox(browser);
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    let notificationId = "decoder-doctor-notification";
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    if (box.getNotificationWithValue(notificationId)) {
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      return;
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    }
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    let parsedData;
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    try {
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      parsedData = JSON.parse(data);
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    } catch (ex) {
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      Cu.reportError("Malformed Decoder Doctor message with data: " + data);
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      return;
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    }
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    // parsedData (the result of parsing the incoming 'data' json string)
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    // contains analysis information from Decoder Doctor:
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    // - 'type' is the type of issue, it determines which text to show in the
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    //   infobar.
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    // - 'decoderDoctorReportId' is the Decoder Doctor issue identifier, to be
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    //   used here as key for the telemetry (counting infobar displays,
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    //   "Learn how" buttons clicks, and resolutions) and for the prefs used
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    //   to store at-issue formats.
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    // - 'formats' contains a comma-separated list of formats (or key systems)
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    //   that suffer the issue. These are kept in a pref, which the backend
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    //   uses to later find when an issue is resolved.
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    // - 'isSolved' is true when the notification actually indicates the
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    //   resolution of that issue, to be reported as telemetry.
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    let {type, isSolved, decoderDoctorReportId, formats} = parsedData;
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    type = type.toLowerCase();
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    let title = gDecoderDoctorHandler.getLabelForNotificationBox(type);
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    if (!title) {
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      return;
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    }
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    // We keep the list of formats in prefs for the sake of the decoder itself,
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    // which reads it to determine when issues get solved for these formats.
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    // (Writing prefs from e10s content is now allowed.)
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    let formatsPref = "media.decoder-doctor." + decoderDoctorReportId + ".formats";
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    let buttonClickedPref = "media.decoder-doctor." + decoderDoctorReportId + ".button-clicked";
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    let histogram =
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      Services.telemetry.getKeyedHistogramById("DECODER_DOCTOR_INFOBAR_STATS");
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    let formatsInPref = Services.prefs.getPrefType(formatsPref) &&
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                        Services.prefs.getCharPref(formatsPref);
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    if (!isSolved) {
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      if (!formats) {
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        Cu.reportError("Malformed Decoder Doctor unsolved message with no formats");
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        return;
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      }
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      if (!formatsInPref) {
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        Services.prefs.setCharPref(formatsPref, formats);
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        histogram.add(decoderDoctorReportId, TELEMETRY_DDSTAT_SHOWN_FIRST);
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      } else {
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        // Split existing formats into an array of strings.
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        let existing = formatsInPref.split(",").map(String.trim);
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        // Keep given formats that were not already recorded.
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        let newbies = formats.split(",").map(String.trim)
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                      .filter(x => existing.includes(x));
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        // And rewrite pref with the added new formats (if any).
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        if (newbies.length) {
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          Services.prefs.setCharPref(formatsPref,
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                                     existing.concat(newbies).join(", "));
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        }
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      }
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      histogram.add(decoderDoctorReportId, TELEMETRY_DDSTAT_SHOWN);
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      let buttons = [];
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      if (gDecoderDoctorHandler.shouldShowLearnMoreButton()) {
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        buttons.push({
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          label: gNavigatorBundle.getString("decoder.noCodecs.button"),
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          accessKey: gNavigatorBundle.getString("decoder.noCodecs.accesskey"),
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          callback() {
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            let clickedInPref = Services.prefs.getPrefType(buttonClickedPref) &&
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                                Services.prefs.getBoolPref(buttonClickedPref);
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            if (!clickedInPref) {
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              Services.prefs.setBoolPref(buttonClickedPref, true);
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              histogram.add(decoderDoctorReportId, TELEMETRY_DDSTAT_CLICKED_FIRST);
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            }
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            histogram.add(decoderDoctorReportId, TELEMETRY_DDSTAT_CLICKED);
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            let baseURL = Services.urlFormatter.formatURLPref("app.support.baseURL");
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            openUILinkIn(baseURL + "fix-video-audio-problems-firefox-windows", "tab");
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          }
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        });
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      }
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      box.appendNotification(
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          title,
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          notificationId,
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          "", // This uses the info icon as specified below.
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          box.PRIORITY_INFO_LOW,
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          buttons
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      );
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    } else if (formatsInPref) {
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      // Issue is solved, and prefs haven't been cleared yet, meaning it's the
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      // first time we get this resolution -> Clear prefs and report telemetry.
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      Services.prefs.clearUserPref(formatsPref);
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      Services.prefs.clearUserPref(buttonClickedPref);
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      histogram.add(decoderDoctorReportId, TELEMETRY_DDSTAT_SOLVED);
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    }
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  },
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}
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window.messageManager.addMessageListener("DecoderDoctor:Notification", gDecoderDoctorHandler);
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window.messageManager.addMessageListener("EMEVideo:ContentMediaKeysRequest", gEMEHandler);
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window.addEventListener("unload", function() {
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  window.messageManager.removeMessageListener("EMEVideo:ContentMediaKeysRequest", gEMEHandler);
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  window.messageManager.removeMessageListener("DecoderDoctor:Notification", gDecoderDoctorHandler);
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}, false);
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