Revert 75453 - WebUI: Move more files from chrome/browser/dom_ui to chrome/browser/webui. Part 5.

BUG=59945, 59946
TEST=trybots

Review URL: http://codereview.chromium.org/6538053

TBR=tfarina@chromium.org

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@75456 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 81 insertions, 0 deletions

diff --git a/chrome/browser/dom_ui/fileicon_source.cc b/chrome/browser/dom_ui/fileicon_source.cc
new file mode 100644
index 0000000..78f69fe
--- /dev/null
+++ b/chrome/browser/dom_ui/fileicon_source.cc
@@ -0,0 +1,81 @@
+// Copyright (c) 2010 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/dom_ui/fileicon_source.h"
+
+#include "base/callback.h"
+#include "base/file_path.h"
+#include "base/ref_counted_memory.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/common/time_format.h"
+#include "grit/generated_resources.h"
+#include "net/base/escape.h"
+#include "ui/gfx/codec/png_codec.h"
+
+// The path used in internal URLs to file icon data.
+static const char kFileIconPath[] = "fileicon";
+
+FileIconSource::FileIconSource()
+    : DataSource(kFileIconPath, MessageLoop::current()) {}
+
+FileIconSource::~FileIconSource() {
+  cancelable_consumer_.CancelAllRequests();
+}
+
+void FileIconSource::StartDataRequest(const std::string& path,
+                                      bool is_off_the_record,
+                                      int request_id) {
+  IconManager* im = g_browser_process->icon_manager();
+
+  std::string escaped_path = UnescapeURLComponent(path, UnescapeRule::SPACES);
+
+#if defined(OS_WIN)
+  // The path we receive has the wrong slashes and escaping for what we need;
+  // this only appears to matter for getting icons from .exe files.
+  std::replace(escaped_path.begin(), escaped_path.end(), '/', '\\');
+  FilePath escaped_filepath(UTF8ToWide(escaped_path));
+#elif defined(OS_POSIX)
+  // The correct encoding on Linux may not actually be UTF8.
+  FilePath escaped_filepath(escaped_path);
+#endif
+  SkBitmap* icon = im->LookupIcon(escaped_filepath, IconLoader::NORMAL);
+
+  if (icon) {
+    scoped_refptr<RefCountedBytes> icon_data(new RefCountedBytes);
+    gfx::PNGCodec::EncodeBGRASkBitmap(*icon, false, &icon_data->data);
+
+    SendResponse(request_id, icon_data);
+  } else {
+    // Icon was not in cache, go fetch it slowly.
+    IconManager::Handle h = im->LoadIcon(escaped_filepath,
+        IconLoader::NORMAL,
+        &cancelable_consumer_,
+        NewCallback(this, &FileIconSource::OnFileIconDataAvailable));
+
+    // Attach the ChromeURLDataManager request ID to the history request.
+    cancelable_consumer_.SetClientData(im, h, request_id);
+  }
+}
+
+std::string FileIconSource::GetMimeType(const std::string&) const {
+  // Rely on image decoder inferring the correct type.
+  return std::string();
+}
+
+void FileIconSource::OnFileIconDataAvailable(IconManager::Handle handle,
+                                             SkBitmap* icon) {
+  IconManager* im = g_browser_process->icon_manager();
+  int request_id = cancelable_consumer_.GetClientData(im, handle);
+
+  if (icon) {
+    scoped_refptr<RefCountedBytes> icon_data(new RefCountedBytes);
+    gfx::PNGCodec::EncodeBGRASkBitmap(*icon, false, &icon_data->data);
+
+    SendResponse(request_id, icon_data);
+  } else {
+    // TODO(glen): send a dummy icon.
+    SendResponse(request_id, NULL);
+  }
+}