1 files changed, 108 insertions, 0 deletions
diff --git a/chromium/chrome/renderer/extensions/app_hooks_delegate.h b/chromium/chrome/renderer/extensions/app_hooks_delegate.h
new file mode 100644
index 00000000000..da546fb5eb5
--- /dev/null
+++ b/chromium/chrome/renderer/extensions/app_hooks_delegate.h
@@ -0,0 +1,108 @@
+// Copyright 2017 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_RENDERER_EXTENSIONS_APP_HOOKS_DELEGATE_H_
+#define CHROME_RENDERER_EXTENSIONS_APP_HOOKS_DELEGATE_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "chrome/renderer/extensions/chrome_v8_extension_handler.h"
+#include "extensions/renderer/bindings/api_binding_hooks_delegate.h"
+#include "v8/include/v8.h"
+
+class GURL;
+
+namespace content {
+class RenderFrame;
+}
+
+namespace extensions {
+class APIRequestHandler;
+class Dispatcher;
+class ScriptContext;
+
+// The custom hooks for the chrome.app API.
+class AppHooksDelegate : public APIBindingHooksDelegate {
+ public:
+  using GetterCallback =
+      base::Callback<void(const v8::PropertyCallbackInfo<v8::Value>& info)>;
+
+  AppHooksDelegate(Dispatcher* dispatcher, APIRequestHandler* request_handler);
+  ~AppHooksDelegate() override;
+
+  // APIBindingHooksDelegate:
+  APIBindingHooks::RequestResult HandleRequest(
+      const std::string& method_name,
+      const APISignature* signature,
+      v8::Local<v8::Context> context,
+      std::vector<v8::Local<v8::Value>>* arguments,
+      const APITypeReferenceMap& refs) override;
+  void InitializeTemplate(v8::Isolate* isolate,
+                          v8::Local<v8::ObjectTemplate> object_template,
+                          const APITypeReferenceMap& type_refs) override;
+
+  // Total misnomer. Returns true if there is a hosted app associated with
+  // |script_context| active in this process. This naming is to match the
+  // chrome.app function it implements.
+  bool GetIsInstalled(ScriptContext* script_context) const;
+
+ private:
+  // A helper class to handle IPC message sending/receiving. Isolated from
+  // AppHooksDelegate to avoid multiple inheritence.
+  class IPCHelper : public ChromeV8ExtensionHandler {
+   public:
+    explicit IPCHelper(AppHooksDelegate* owner);
+    ~IPCHelper() override;
+
+    // Sends the IPC message to the browser to get the install state of the
+    // app.
+    void SendGetAppInstallStateMessage(content::RenderFrame* render_frame,
+                                       const GURL& url,
+                                       int request_id);
+
+   private:
+    // IPC::Listener:
+    bool OnMessageReceived(const IPC::Message& message) override;
+
+    // Handle for ExtensionMsg_GetAppInstallStateResponse; just forwards to
+    // AppHooksDelegate.
+    void OnAppInstallStateResponse(const std::string& state, int request_id);
+
+    AppHooksDelegate* owner_ = nullptr;
+
+    DISALLOW_COPY_AND_ASSIGN(IPCHelper);
+  };
+
+  // Returns the manifest of the extension associated with the frame.
+  v8::Local<v8::Value> GetDetails(ScriptContext* script_context) const;
+
+  // Determines the install state for the extension associated with the frame.
+  // Note that this could be "disabled" for hosted apps when the user visits the
+  // site but doesn't have the app enabled. The response is determined
+  // asynchronously before completing the request with the given |request_id|.
+  void GetInstallState(ScriptContext* script_context, int request_id);
+
+  // Returns the "running state" (one of running, cannot run, and ready to run)
+  // for the extension associated with the frame of the script context.
+  const char* GetRunningState(ScriptContext* script_context) const;
+
+  // Handle for ExtensionMsg_GetAppInstallStateResponse.
+  void OnAppInstallStateResponse(const std::string& state, int request_id);
+
+  // Dispatcher handle. Not owned.
+  Dispatcher* dispatcher_ = nullptr;
+
+  APIRequestHandler* request_handler_ = nullptr;
+
+  IPCHelper ipc_helper_;
+
+  GetterCallback callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppHooksDelegate);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_RENDERER_EXTENSIONS_APP_HOOKS_DELEGATE_H_