Support 'Paste and Go' action in omnibox Aura.

chrome/browser/ui/omnibox/omnibox_view.cc

 // 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.
 
 // This file defines helper functions shared by the various implementations
 // of OmniboxView.
 
 #include "chrome/browser/ui/omnibox/omnibox_view.h"
 
 #include "base/string_util.h"
 #include "base/string16.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
+#include "ui/base/clipboard/clipboard.h"
 
 string16 OmniboxView::StripJavascriptSchemas(const string16& text) {
   const string16 kJsPrefix(ASCIIToUTF16(chrome::kJavaScriptScheme) +
                            ASCIIToUTF16(":"));
   string16 out(text);
   while (StartsWith(out, kJsPrefix, false))
     TrimWhitespace(out.substr(kJsPrefix.length()), TRIM_LEADING, &out);
   return out;
 }
 
+// static
+string16 OmniboxView::GetClipboardText() {
+  // Try text format.
+  ui::Clipboard* clipboard = g_browser_process->clipboard();
+  if (clipboard->IsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(),
+                                   ui::Clipboard::BUFFER_STANDARD)) {
+    string16 text;
+    clipboard->ReadText(ui::Clipboard::BUFFER_STANDARD, &text);
+    // Note: Unlike in the find popup and textfield view, here we completely
+    // remove whitespace strings containing newlines.  We assume users are
+    // most likely pasting in URLs that may have been split into multiple
+    // lines in terminals, email programs, etc., and so linebreaks indicate
+    // completely bogus whitespace that would just cause the input to be
+    // invalid.
+    return StripJavascriptSchemas(CollapseWhitespace(text, true));
+  }
+
+  // Try bookmark format.
+  //
+  // It is tempting to try bookmark format first, but the URL we get out of a
+  // bookmark has been cannonicalized via GURL.  This means if a user copies
+  // and pastes from the URL bar to itself, the text will get fixed up and
+  // cannonicalized, which is not what the user expects.  By pasting in this
+  // order, we are sure to paste what the user copied.
+  if (clipboard->IsFormatAvailable(ui::Clipboard::GetUrlWFormatType(),
+                                   ui::Clipboard::BUFFER_STANDARD)) {
+    std::string url_str;
+    clipboard->ReadBookmark(NULL, &url_str);
+    // pass resulting url string through GURL to normalize
+    GURL url(url_str);
+    if (url.is_valid())
+      return StripJavascriptSchemas(UTF8ToUTF16(url.spec()));
+  }
+
+  return string16();
+}