Implement a JavaScript API for document scanning

chrome/browser/extensions/api/document_scan/document_scan_api.h

Index: chrome/browser/extensions/api/document_scan/document_scan_api.h
diff --git a/chrome/browser/extensions/api/document_scan/document_scan_api.h b/chrome/browser/extensions/api/document_scan/document_scan_api.h
new file mode 100644
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+++ b/chrome/browser/extensions/api/document_scan/document_scan_api.h
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+// Copyright 2014 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.
+
+#include "chrome/common/extensions/api/document_scan.h"
+#include "chromeos/dbus/lorgnette_manager_client.h"
+#include "extensions/browser/api/async_api_function.h"
+
+#ifndef CHROME_BROWSER_EXTENSIONS_API_DOCUMENT_SCAN_DOCUMENT_SCAN_API_H_
+#define CHROME_BROWSER_EXTENSIONS_API_DOCUMENT_SCAN_DOCUMENT_SCAN_API_H_
+
+namespace base {
+class FilePath;
+}  // namespace base
+
+namespace extensions {
+
+namespace api {
+
+class DocumentScanListScannersFunction : public AsyncApiFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("documentScan.listScanners",
+                             DOCUMENT_SCAN_LISTSCANNERS)
+  DocumentScanListScannersFunction();
+
+ protected:
+  ~DocumentScanListScannersFunction();
+
+  // AsyncApiFunction:
+  virtual bool Prepare() OVERRIDE;
+  virtual void AsyncWorkStart() OVERRIDE;
+  virtual bool Respond() OVERRIDE;
+
+ private:
+  void OnScannerListReceived(
+      bool succeeded,
+      const chromeos::LorgnetteManagerClient::ScannerTable &scanners);
+};
+
+class DocumentScanScanFunction : public AsyncApiFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("documentScan.scan",
+                             DOCUMENT_SCAN_SCAN)
+  DocumentScanScanFunction();
+
+ protected:
+  ~DocumentScanScanFunction();
+
+  // AsyncApiFunction:
+  virtual bool Prepare() OVERRIDE;
+  virtual void AsyncWorkStart() OVERRIDE;
+  virtual bool Respond() OVERRIDE;
+
+ private:
+  bool GetDocumentScanFilename(base::FilePath* filename);
+  void ScanImageCallback(const base::FilePath &filename, bool succeeded);
+  void FinishScan();
+
+  scoped_ptr<document_scan::Scan::Params> params_;
+};
+
+}  // namespace api
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_DOCUMENT_SCAN_DOCUMENT_SCAN_API_H_