Omnibox: Make Bookmarks Set Inline_Autocompletion

chrome/browser/autocomplete/url_prefix.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/autocomplete/url_prefix.h"
 
 #include "base/basictypes.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/autocomplete/autocomplete_input.h"
+
+namespace {
+
+// Like URLPrefix::BestURLPrefix() except also handles the prefix of
+// "www.".
+const URLPrefix* BestURLPrefixWithWWWCase(
+    const base::string16& text,
+    const base::string16& prefix_suffix) {
+  CR_DEFINE_STATIC_LOCAL(URLPrefix, www_prefix,
+                         (base::ASCIIToUTF16("www."), 1));
+  const URLPrefix* best_prefix = URLPrefix::BestURLPrefix(text, prefix_suffix);
+  if ((best_prefix == NULL) ||
+      (best_prefix->num_components < www_prefix.num_components)) {
+    if (URLPrefix::PrefixMatch(www_prefix, text, prefix_suffix))
+      best_prefix = &www_prefix;
+  }
+  return best_prefix;
+}
+
+}  // namespace
 
 URLPrefix::URLPrefix(const base::string16& prefix, size_t num_components)
     : prefix(prefix),
       num_components(num_components) {
 }
 
 // static
 const URLPrefixes& URLPrefix::GetURLPrefixes() {
   CR_DEFINE_STATIC_LOCAL(URLPrefixes, prefixes, ());
   if (prefixes.empty()) {
@@ skipping 27 matching lines @@
       return &(*i);
   return NULL;
 }
 
 // static
 bool URLPrefix::PrefixMatch(const URLPrefix& prefix,
                             const base::string16& text,
                             const base::string16& prefix_suffix) {
   return StartsWith(text, prefix.prefix + prefix_suffix, false);
 }
+
+// static
+void URLPrefix::ComputeMatchStartAndInlineAutocompleteOffset(
+    const AutocompleteInput& input,
+    const AutocompleteInput& fixed_up_input,
+    const bool allow_www_prefix_without_scheme,
+    const base::string16& text,
+    size_t* match_start,
+    size_t* inline_autocomplete_offset) {
+  const URLPrefix* best_prefix = allow_www_prefix_without_scheme ?
+      BestURLPrefixWithWWWCase(text, input.text()) :
+      BestURLPrefix(text, input.text());
+  const base::string16* matching_string = &input.text();
+  // If we failed to find a best_prefix initially, try again using a fixed-up
+  // version of the user input.  This is especially useful to get about: URLs
+  // to inline against chrome:// shortcuts.  (about: URLs are fixed up to the
+  // chrome:// scheme.)
+  if ((best_prefix == NULL) && !fixed_up_input.text().empty() &&
+      (fixed_up_input.text() != input.text())) {
+    best_prefix = allow_www_prefix_without_scheme ?
+        BestURLPrefixWithWWWCase(text, fixed_up_input.text()) :
+        BestURLPrefix(text, fixed_up_input.text());
+    matching_string = &fixed_up_input.text();
+  }
+  if (best_prefix != NULL) {
+    *match_start = best_prefix->prefix.length();
+    *inline_autocomplete_offset =
+        best_prefix->prefix.length() + matching_string->length();
+  } else {
+    *match_start = base::string16::npos;
+    *inline_autocomplete_offset = base::string16::npos;
+  }
+}