Upstream version 7.36.149.0

[platform/framework/web/crosswalk.git] / src / chrome / browser / autocomplete / url_prefix.cc

diff --git a/src/chrome/browser/autocomplete/url_prefix.cc b/src/chrome/browser/autocomplete/url_prefix.cc
index 9174bd5..8a49f2c 100644 (file)
--- a/src/chrome/browser/autocomplete/url_prefix.cc
+++ b/src/chrome/browser/autocomplete/url_prefix.cc
@@ -7,8 +7,29 @@
 #include "base/basictypes.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/autocomplete/autocomplete_input.h"
 
-URLPrefix::URLPrefix(const string16& prefix, size_t num_components)
+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) {
 }
@@ -17,20 +38,20 @@ URLPrefix::URLPrefix(const string16& prefix, size_t num_components)
 const URLPrefixes& URLPrefix::GetURLPrefixes() {
   CR_DEFINE_STATIC_LOCAL(URLPrefixes, prefixes, ());
   if (prefixes.empty()) {
-    prefixes.push_back(URLPrefix(ASCIIToUTF16("https://www."), 2));
-    prefixes.push_back(URLPrefix(ASCIIToUTF16("http://www."), 2));
-    prefixes.push_back(URLPrefix(ASCIIToUTF16("ftp://ftp."), 2));
-    prefixes.push_back(URLPrefix(ASCIIToUTF16("ftp://www."), 2));
-    prefixes.push_back(URLPrefix(ASCIIToUTF16("https://"), 1));
-    prefixes.push_back(URLPrefix(ASCIIToUTF16("http://"), 1));
-    prefixes.push_back(URLPrefix(ASCIIToUTF16("ftp://"), 1));
-    prefixes.push_back(URLPrefix(string16(), 0));
+    prefixes.push_back(URLPrefix(base::ASCIIToUTF16("https://www."), 2));
+    prefixes.push_back(URLPrefix(base::ASCIIToUTF16("http://www."), 2));
+    prefixes.push_back(URLPrefix(base::ASCIIToUTF16("ftp://ftp."), 2));
+    prefixes.push_back(URLPrefix(base::ASCIIToUTF16("ftp://www."), 2));
+    prefixes.push_back(URLPrefix(base::ASCIIToUTF16("https://"), 1));
+    prefixes.push_back(URLPrefix(base::ASCIIToUTF16("http://"), 1));
+    prefixes.push_back(URLPrefix(base::ASCIIToUTF16("ftp://"), 1));
+    prefixes.push_back(URLPrefix(base::string16(), 0));
   }
   return prefixes;
 }
 
 // static
-bool URLPrefix::IsURLPrefix(const string16& prefix) {
+bool URLPrefix::IsURLPrefix(const base::string16& prefix) {
   const URLPrefixes& list = GetURLPrefixes();
   for (URLPrefixes::const_iterator i = list.begin(); i != list.end(); ++i)
     if (i->prefix == prefix)
@@ -39,11 +60,44 @@ bool URLPrefix::IsURLPrefix(const string16& prefix) {
 }
 
 // static
-const URLPrefix* URLPrefix::BestURLPrefix(const string16& text,
-                                          const string16& prefix_suffix) {
+const URLPrefix* URLPrefix::BestURLPrefix(const base::string16& text,
+                                          const base::string16& prefix_suffix) {
   const URLPrefixes& list = GetURLPrefixes();
   for (URLPrefixes::const_iterator i = list.begin(); i != list.end(); ++i)
-    if (StartsWith(text, i->prefix + prefix_suffix, false))
+    if (PrefixMatch(*i, text, prefix_suffix))
       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
+size_t URLPrefix::GetInlineAutocompleteOffset(
+    const AutocompleteInput& input,
+    const AutocompleteInput& fixed_up_input,
+    const bool allow_www_prefix_without_scheme,
+    const base::string16& text) {
+  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();
+  }
+  return (best_prefix != NULL) ?
+      (best_prefix->prefix.length() + matching_string->length()) :
+      base::string16::npos;
+}