gdata: Save screenshot to /drive.

chrome/browser/ui/ash/screenshot_taker.cc

 // Copyright (c) 2012 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/browser/ui/ash/screenshot_taker.h"
 
 #include <climits>
 #include <string>
 
 #include "ash/shell.h"
@@ skipping 12 matching lines @@
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/window_snapshot/window_snapshot.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 
 #if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/gdata/gdata_util.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #endif
 
 namespace {
 const int kScreenshotMinimumIntervalInMS = 500;
 
 bool ShouldUse24HourClock() {
 #if defined(OS_CHROMEOS)
   Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord();
   if (profile) {
     PrefService* pref_service = profile->GetPrefs();
     if (pref_service) {
       return pref_service->GetBoolean(prefs::kUse24HourClock);
     }
   }
 #endif
   return base::GetHourClockType() == base::k24HourClock;
 }
 
-FilePath GetScreenshotPath(const FilePath& base_directory,
-                           bool use_24hour_clock) {
+std::string GetScreenShotBaseFilename(bool use_24hour_clock) {
   base::Time::Exploded now;
   base::Time::Now().LocalExplode(&now);
 
   // We don't use base/i18n/time_formatting.h here because it doesn't
   // support our format.  Don't use ICU either to avoid i18n file names
   // for non-English locales.
   // TODO(mukai): integrate this logic somewhere time_formatting.h
   std::string file_name = base::StringPrintf(
       "Screenshot %d-%02d-%02d ", now.year, now.month, now.day_of_month);
 
   if (use_24hour_clock) {
     file_name.append(base::StringPrintf(
         "%02d:%02d:%02d", now.hour, now.minute, now.second));
   } else {
     int hour = now.hour;
     if (hour > 12) {
       hour -= 12;
     } else if (hour == 0) {
       hour = 12;
     }
     file_name.append(base::StringPrintf(
         "%d:%02d:%02d ", hour, now.minute, now.second));
     file_name.append((now.hour >= 12) ? "PM" : "AM");
   }
 
+  return file_name;
+}
+
+FilePath GetScreenshotPath(const FilePath& base_directory,
+                           const std::string& base_name) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
   for (int retry = 0; retry < INT_MAX; retry++) {
     std::string retry_suffix;
     if (retry > 0)
       retry_suffix = base::StringPrintf(" (%d)", retry + 1);
 
     FilePath file_path = base_directory.AppendASCII(
-        file_name + retry_suffix + ".png");
+        base_name + retry_suffix + ".png");
     if (!file_util::PathExists(file_path))
       return file_path;
   }
-
   return FilePath();
 }
 
-// |is_logged_in| is used only for ChromeOS.  Otherwise it is always true.
-void SaveScreenshot(const FilePath& screenshot_directory,
-                    bool use_24hour_clock,
-                    scoped_refptr<base::RefCountedBytes> png_data) {
+void SaveScreenshotToLocalFile(scoped_refptr<base::RefCountedBytes> png_data,
+                               const FilePath& screenshot_path) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
-
-  FilePath screenshot_path = GetScreenshotPath(
-      screenshot_directory, use_24hour_clock);
-
-  if (screenshot_path.empty()) {
-    LOG(ERROR) << "Failed to find a screenshot file name.";
-    return;
-  }
-
   if (static_cast<size_t>(file_util::WriteFile(
           screenshot_path,
           reinterpret_cast<char*>(&(png_data->data()[0])),
           png_data->size())) != png_data->size()) {
     LOG(ERROR) << "Failed to save to " << screenshot_path.value();
   }
 }
 
+void SaveScreenshot(const FilePath& screenshot_directory,
+                    const std::string& base_name,
+                    scoped_refptr<base::RefCountedBytes> png_data) {
+  FilePath screenshot_path = GetScreenshotPath(screenshot_directory, base_name);
+  if (screenshot_path.empty()) {
+    LOG(ERROR) << "Failed to find a screenshot file name.";
+    return;
+  }
+  SaveScreenshotToLocalFile(png_data, screenshot_path);
+}
+
+// TODO(kinaba): crbug.com/140425, remove this ungly #ifdef dispatch.
+#ifdef OS_CHROMEOS
+void SaveScreenshotToGData(scoped_refptr<base::RefCountedBytes> png_data,
+                           gdata::GDataFileError error,
+                           const FilePath& local_path) {
+  if (error != gdata::GDATA_FILE_OK) {
+    LOG(ERROR) << "Failed to write screenshot image to Google Drive: " << error;
+    return;
+  }
+  SaveScreenshotToLocalFile(png_data, local_path);
+}
+
+void PostSaveScreenshotTask(const FilePath& screenshot_directory,
+                            const std::string& base_name,
+                            scoped_refptr<base::RefCountedBytes> png_data) {
+  if (gdata::util::IsUnderGDataMountPoint(screenshot_directory)) {
+    Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord();
+    if (profile) {
+      // TODO(kinaba,mukai): crbug.com/140749. Take care of the case
+      // "base_name.png" already exists.
+      gdata::util::PrepareWritableFileAndRun(
+          profile,
+          screenshot_directory.Append(base_name + ".png"),
+          base::Bind(&SaveScreenshotToGData, png_data));
+    }
+  } else {
+    content::BrowserThread::PostTask(
+        content::BrowserThread::FILE, FROM_HERE,
+        base::Bind(&SaveScreenshot, screenshot_directory, base_name, png_data));
+  }
+}
+#else
+void PostSaveScreenshotTask(const FilePath& screenshot_directory,
+                            const std::string& base_name,
+                            scoped_refptr<base::RefCountedBytes> png_data) {
+  content::BrowserThread::PostTask(
+      content::BrowserThread::FILE, FROM_HERE,
+      base::Bind(&SaveScreenshot, screenshot_directory, base_name, png_data));
+}
+#endif
+
 bool AreScreenshotsDisabled() {
   return g_browser_process->local_state()->GetBoolean(
       prefs::kDisableScreenshots);
 }
 
 bool GrabWindowSnapshot(aura::Window* window,
                         const gfx::Rect& snapshot_bounds,
                         std::vector<unsigned char>* png_data) {
 #if defined(OS_LINUX)
   // browser::GrabWindowSnapshot checks this too, but RootWindow::GrabSnapshot
@@ skipping 50 matching lines @@
     DownloadPrefs* download_prefs = DownloadPrefs::FromBrowserContext(
         ash::Shell::GetInstance()->delegate()->GetCurrentBrowserContext());
     screenshot_directory = download_prefs->DownloadPath();
   } else {
     if (!file_util::GetTempDir(&screenshot_directory)) {
       LOG(ERROR) << "Failed to find temporary directory.";
       return;
     }
   }
 
-  bool use_24hour_clock = ShouldUse24HourClock();
-
   if (GrabWindowSnapshot(window, rect, &png_data->data())) {
     last_screenshot_timestamp_ = base::Time::Now();
     DisplayVisualFeedback(rect);
-    content::BrowserThread::PostTask(
-        content::BrowserThread::FILE, FROM_HERE,
-        base::Bind(&SaveScreenshot, screenshot_directory, use_24hour_clock,
-                   png_data));
+    PostSaveScreenshotTask(screenshot_directory,
+                           GetScreenShotBaseFilename(ShouldUse24HourClock()),
+                           png_data);
   } else {
     LOG(ERROR) << "Failed to grab the window screenshot";
   }
 }
 
 bool ScreenshotTaker::CanTakeScreenshot() {
   return last_screenshot_timestamp_.is_null() ||
       base::Time::Now() - last_screenshot_timestamp_ >
       base::TimeDelta::FromMilliseconds(
           kScreenshotMinimumIntervalInMS);
@@ skipping 14 matching lines @@
       ash::internal::kShellWindowId_OverlayContainer)->layer();
   parent->Add(visual_feedback_layer_.get());
   visual_feedback_layer_->SetVisible(true);
 
   MessageLoopForUI::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&ScreenshotTaker::CloseVisualFeedbackLayer,
                  base::Unretained(this)),
       base::TimeDelta::FromMilliseconds(kVisualFeedbackLayerDisplayTimeMs));
 }