Add webstorePrivate API for installing bundles of extensions.

chrome/browser/extensions/webstore_bundle.h

Index: chrome/browser/extensions/webstore_bundle.h
diff --git a/chrome/browser/extensions/webstore_bundle.h b/chrome/browser/extensions/webstore_bundle.h
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+++ b/chrome/browser/extensions/webstore_bundle.h
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+// Copyright (c) 2011 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_WEBSTORE_BUNDLE_H_
+#define CHROME_BROWSER_EXTENSIONS_WEBSTORE_BUNDLE_H_
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "base/memory/scoped_vector.h"
+#include "chrome/browser/extensions/extension_install_ui.h"
+#include "chrome/browser/extensions/webstore_installer.h"
+#include "chrome/browser/extensions/webstore_install_helper.h"
+#include "chrome/common/extensions/extension.h"
+#include "content/public/browser/notification_registrar.h"
+
+class Browser;
+class Profile;
+
+// Manages the installation life cycle for bundles of extensions.
+//
+// The normal flow for successful installs is:
+//
+// Part A: user approval
+// 1. A WebstoreBundle is created with a list of items in STATE_INITIAL.
+// 2. PromptForApproval: starts parsing all the extension manifest data.
+// 3. OnWebstoreParseSuccess: creates the dummy extension out of the parsed
+//    manifest data, moving items into STATE_PARSED. If no more items are in
+//    STATE_INITIAL, calls ShowPrompt to display the install prompt.
+// 4. ShowPrompt: calculates the total permissions for items in STATE_PARSED,
+//    and displays the install prompt.
+// 5. InstallUIProceed: transitions all STATE_PARSED items to STATE_APPROVED and
+//    notifies the delegate via OnBundleInstallApproved.
+//
+// Part B: download and install
+// 1. CompleteInstall: starts installing the items by calling InstallNextItem.
+// 2. InstallNextItem: downloads and installs the first item in STATE_APPROVED.
+// 3. OnExtensionInstallSuccess: moves the item to STATE_INSTALLED and starts
+//    installing the next item via InstallNextItem.
+// 4. InstallNextItem: when no more items are in STATE_APPROVED, this calls
+//    ShowInstalledBubble to display the status bubble.
+// 5. ShowInstalledBubble: platform specific implementation that shows which
+//    items succeeded and failed via the installed bubble.
+//
+// The normal state transitions for items are:
+//  STATE_INITIAL -> STATE_PARSED -> STATE_APPROVED -> STATE_INSTALLED
+//
+// Items transition to STATE_NOT_INSTALLED if they fail any step of the flow.
+//
+class WebstoreBundle : public WebstoreInstallHelper::Delegate,
+                       public ExtensionInstallUI::Delegate,
+                       public WebstoreInstaller::Delegate,
+                       public base::RefCounted<WebstoreBundle> {
+ public:
+  // Auto approve or cancel the permission prompt.
+  // Note: this should only be used for testing!
+  static void SetAutoApproveForTesting(bool approve);
+
+  class Delegate {
+   public:
+    virtual void OnBundleInstallApproved() {}
+    virtual void OnBundleInstallCanceled(bool user_initiated) {}
+    virtual void OnBundleInstallCompleted() {}
+  };
+
+  // Represents an individual member of the bundle.
+  // TODO(jstritar): we can probably combine this with WebstoreInstaller, and
+  // have one class that handles the life cycle of a single extension install.
+  class Item {
+   public:
+    enum State {
+      STATE_INITIAL = 0,
+
+      // The item's manfiest has been parsed and dummy extension created.
+      STATE_PARSED,
+
+      // The user has approved the item's permissions.
+      STATE_APPROVED,
+
+      // The item has been downloaded and installed successfully.
+      STATE_INSTALLED,
+
+      // The item has failed at any step.
+      STATE_NOT_INSTALLED
+    };
+
+    Item(const std::string& id,
+         const std::string& manifest,
+         const std::string& localized_name);
+    ~Item();
+
+    // Parses a dummy extension from the |parsed_manifest|.
+    void SetDummyExtension(base::DictionaryValue* parsed_manifest);
+
+    void MarkApproved() { state_ = STATE_APPROVED; }
+    void MarkInstalled() { state_ = STATE_INSTALLED; }
+    void MarkNotInstalled() { state_ = STATE_NOT_INSTALLED; }
+
+    State state() const { return state_; }
+
+    const std::string& id() const { return id_; }
+    const std::string& manifest() const { return manifest_; }
+    const std::string& localized_name() const { return localized_name_; }
+
+    // These two fields are only available after the STATE_PARSED stage.
+    // The dummy extension is created from the parsed manifest, and is used
+    // when displaying the install prompt.
+    scoped_refptr<Extension> dummy_extension() const {
+      return dummy_extension_;
+    }
+    base::DictionaryValue* parsed_manifest() const {
+      return parsed_manifest_.get();
+    }
+
+   private:
+    std::string id_;
+    std::string manifest_;
+    std::string localized_name_;
+
+    State state_;
+    scoped_ptr<base::DictionaryValue> parsed_manifest_;
+    scoped_refptr<Extension> dummy_extension_;
+
+    DISALLOW_COPY_AND_ASSIGN(Item);
+  };
+
+  enum ItemMatcher {
+    MATCH_EXTENSIONS = 1 << 0,
+    MATCH_APPS = 1 << 1,
+    MATCH_ALL = (1 << 2) - 1
+  };
+
+  typedef ScopedVector<Item> ItemList;
+
+  // Passes ownership of the items.
+  WebstoreBundle(Profile* profile, ItemList* items);
+  virtual ~WebstoreBundle();
+
+  // Parses the extension manifests and then prompts the user to approve their
+  // permissions. One of OnBundleInstallApproved or OnBundleInstallCanceled
+  // will be called when complete if |delegate| is not NULL.
+  // Note: the |delegate| must stay alive until receiving the callback.
+  void PromptForApproval(Delegate* delegate);
+
+  // If the bundle has been approved, this downloads and installs the member
+  // extensions. OnBundleInstallComplete will be called when the process is
+  // complete and |delegate| is not NULL. The download process uses the
+  // specified |controller|.
+  // Note: the |delegate| must stay alive until receiving the callback.
+  void CompleteInstall(NavigationController* controller, Delegate* delegate);
+
+  // Returns true if this is the same bundle as |ids|.
+  bool IsSameBundle(const std::vector<std::string>& ids);
+
+  // Returns the list of member items in the given |state| that match
+  // the specified |matcher| flags.
+  // Note: the WebstoreBundle retains ownership of the items.
+  std::vector<const Item*> GetItemsInState(
+      Item::State state, int matcher) const;
+
+  // Gets the prompt heading text for the bundle of items to be installed.
+  string16 GetHeadingTextForPrompt() const;
+
+  // Gets the installed bubble heading text for the bundle items that were
+  // successfully installed, or an empty string if none were.
+  string16 GetInstalledHeadingTextForBubble() const;
+
+  // Gets the installed bubble heading text for the bundle items that failed to
+  // install, or an empty string if they all succeeded.
+  string16 GetFailedHeadingTextForBubble() const;
+
+  // Returns true if this has apps that are in |state|.
+  bool HasAppsInState(Item::State state) const;
+
+  // Returns true if this has extensions that are in |state|.
+  bool HasExtensionsInState(Item::State state) const;
+
+  // WebstoreInstallHelper::Delegate implementation:
+  virtual void OnWebstoreParseSuccess(
+      const std::string& id,
+      const SkBitmap& icon,
+      base::DictionaryValue* parsed_manifest) OVERRIDE;
+  virtual void OnWebstoreParseFailure(
+      const std::string& id,
+      InstallHelperResultCode result_code,
+      const std::string& error_message) OVERRIDE;
+
+  // ExtensionInstallUI::Delegate implementation:
+  virtual void InstallUIProceed() OVERRIDE;
+  virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
+
+  // WebstoreInstaller::Delegate implementation:
+  virtual void OnExtensionInstallSuccess(const std::string& id) OVERRIDE;
+  virtual void OnExtensionInstallFailure(const std::string& id,
+                                         const std::string& error) OVERRIDE;
+
+ private:
+  // Gets the item for the given extension |id|.
+  Item* GetItemById(const std::string& id);
+
+  // Parses the member item's manifests using the WebstoreInstallHelper.
+  void ParseManifests();
+
+  // Only one WebstoreInstaller can be active for a given controller, so
+  // we install extensions in series. This method starts downloading the next
+  // extension in STATE_APPROVED.
+  void InstallNextItem();
+
+  // Notifies the delegate that the installation has been approved.
+  void ReportApproved();
+
+  // Notifies the delegate that the installation was canceled.
+  void ReportCanceled(bool user_initiated);
+
+  // Notifies the delegate that the installation is complete.
+  void ReportComplete();
+
+  // Prompts the user to install the bundle if there are no more member items in
+  // STATE_INITIAL.
+  void ShowPromptIfDoneParsing();
+
+  // Prompts the user to install the bundle.
+  void ShowPrompt();
+
+  // Displays the install bubble if all member items are in STATE_INSTALLED or
+  // STATE_NOT_INSTALLED.
+  void ShowInstalledBubbleIfDone();
+
+  // Displays the install bubble for |bundle| on |browser|.
+  // Note: this is a platform specific implementation.
+  static void ShowInstalledBubble(const WebstoreBundle* bundle,
+                                  Browser* browser);
+
+  ItemList items_;
+
+  // The profile that the bundle should be installed in.
+  Profile* profile_;
+
+  // The controller that the webstore installer should use.
+  NavigationController* controller_;
+
+  Delegate* delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebstoreBundle);
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_WEBSTORE_BUNDLE_H_