1 files changed, 183 insertions, 0 deletions
diff --git a/mobile/android/modules/geckoview/GeckoViewSettings.sys.mjs b/mobile/android/modules/geckoview/GeckoViewSettings.sys.mjs
new file mode 100644
index 0000000000..e432be4c5f
--- /dev/null
+++ b/mobile/android/modules/geckoview/GeckoViewSettings.sys.mjs
@@ -0,0 +1,183 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { GeckoViewModule } from "resource://gre/modules/GeckoViewModule.sys.mjs";
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+const lazy = {};
+
+XPCOMUtils.defineLazyGetter(lazy, "MOBILE_USER_AGENT", function () {
+  return Cc["@mozilla.org/network/protocol;1?name=http"].getService(
+    Ci.nsIHttpProtocolHandler
+  ).userAgent;
+});
+
+XPCOMUtils.defineLazyGetter(lazy, "DESKTOP_USER_AGENT", function () {
+  return lazy.MOBILE_USER_AGENT.replace(
+    /Android \d.+?; [a-zA-Z]+/,
+    "X11; Linux x86_64"
+  ).replace(/Gecko\/[0-9\.]+/, "Gecko/20100101");
+});
+
+XPCOMUtils.defineLazyGetter(lazy, "VR_USER_AGENT", function () {
+  return lazy.MOBILE_USER_AGENT.replace(/Mobile/, "Mobile VR");
+});
+
+// This needs to match GeckoSessionSettings.java
+const USER_AGENT_MODE_MOBILE = 0;
+const USER_AGENT_MODE_DESKTOP = 1;
+const USER_AGENT_MODE_VR = 2;
+
+// This needs to match GeckoSessionSettings.java
+const DISPLAY_MODE_BROWSER = 0;
+const DISPLAY_MODE_MINIMAL_UI = 1;
+const DISPLAY_MODE_STANDALONE = 2;
+const DISPLAY_MODE_FULLSCREEN = 3;
+
+// This needs to match GeckoSessionSettings.java
+// eslint-disable-next-line no-unused-vars
+const VIEWPORT_MODE_MOBILE = 0;
+const VIEWPORT_MODE_DESKTOP = 1;
+
+// Handles GeckoSession settings.
+export class GeckoViewSettings extends GeckoViewModule {
+  onInit() {
+    debug`onInit`;
+    this._userAgentMode = USER_AGENT_MODE_MOBILE;
+    this._userAgentOverride = null;
+    this._sessionContextId = null;
+
+    this.registerListener(["GeckoView:GetUserAgent"]);
+  }
+
+  onEvent(aEvent, aData, aCallback) {
+    debug`onEvent ${aEvent} ${aData}`;
+
+    switch (aEvent) {
+      case "GeckoView:GetUserAgent": {
+        aCallback.onSuccess(this.customUserAgent ?? lazy.MOBILE_USER_AGENT);
+      }
+    }
+  }
+
+  onSettingsUpdate() {
+    const { settings } = this;
+    debug`onSettingsUpdate: ${settings}`;
+
+    this.displayMode = settings.displayMode;
+    this.unsafeSessionContextId = settings.unsafeSessionContextId;
+    this.userAgentMode = settings.userAgentMode;
+    this.userAgentOverride = settings.userAgentOverride;
+    this.sessionContextId = settings.sessionContextId;
+    this.suspendMediaWhenInactive = settings.suspendMediaWhenInactive;
+    this.allowJavascript = settings.allowJavascript;
+    this.viewportMode = settings.viewportMode;
+    this.useTrackingProtection = !!settings.useTrackingProtection;
+
+    // When the page is loading from the main process (e.g. from an extension
+    // page) we won't be able to query the actor here.
+    this.getActor("GeckoViewSettings")?.sendAsyncMessage(
+      "SettingsUpdate",
+      settings
+    );
+  }
+
+  get allowJavascript() {
+    return this.browsingContext.allowJavascript;
+  }
+
+  set allowJavascript(aAllowJavascript) {
+    this.browsingContext.allowJavascript = aAllowJavascript;
+  }
+
+  get customUserAgent() {
+    if (this.userAgentOverride !== null) {
+      return this.userAgentOverride;
+    }
+    if (this.userAgentMode === USER_AGENT_MODE_DESKTOP) {
+      return lazy.DESKTOP_USER_AGENT;
+    }
+    if (this.userAgentMode === USER_AGENT_MODE_VR) {
+      return lazy.VR_USER_AGENT;
+    }
+    return null;
+  }
+
+  set useTrackingProtection(aUse) {
+    this.browsingContext.useTrackingProtection = aUse;
+  }
+
+  set viewportMode(aViewportMode) {
+    this.browsingContext.forceDesktopViewport =
+      aViewportMode == VIEWPORT_MODE_DESKTOP;
+  }
+
+  get userAgentMode() {
+    return this._userAgentMode;
+  }
+
+  set userAgentMode(aMode) {
+    if (this.userAgentMode === aMode) {
+      return;
+    }
+    this._userAgentMode = aMode;
+    this.browsingContext.customUserAgent = this.customUserAgent;
+  }
+
+  get browsingContext() {
+    return this.browser.browsingContext.top;
+  }
+
+  get userAgentOverride() {
+    return this._userAgentOverride;
+  }
+
+  set userAgentOverride(aUserAgent) {
+    if (aUserAgent === this.userAgentOverride) {
+      return;
+    }
+    this._userAgentOverride = aUserAgent;
+    this.browsingContext.customUserAgent = this.customUserAgent;
+  }
+
+  get suspendMediaWhenInactive() {
+    return this.browser.suspendMediaWhenInactive;
+  }
+
+  set suspendMediaWhenInactive(aSuspendMediaWhenInactive) {
+    if (aSuspendMediaWhenInactive != this.browser.suspendMediaWhenInactive) {
+      this.browser.suspendMediaWhenInactive = aSuspendMediaWhenInactive;
+    }
+  }
+
+  displayModeSettingToValue(aSetting) {
+    switch (aSetting) {
+      case DISPLAY_MODE_BROWSER:
+        return "browser";
+      case DISPLAY_MODE_MINIMAL_UI:
+        return "minimal-ui";
+      case DISPLAY_MODE_STANDALONE:
+        return "standalone";
+      case DISPLAY_MODE_FULLSCREEN:
+        return "fullscreen";
+      default:
+        warn`Invalid displayMode value ${aSetting}.`;
+        return "browser";
+    }
+  }
+
+  set displayMode(aMode) {
+    this.browsingContext.displayMode = this.displayModeSettingToValue(aMode);
+  }
+
+  set sessionContextId(aAttribute) {
+    this._sessionContextId = aAttribute;
+  }
+
+  get sessionContextId() {
+    return this._sessionContextId;
+  }
+}
+
+const { debug, warn } = GeckoViewSettings.initLogging("GeckoViewSettings");