Add support for 'display' in Manifest.

content/renderer/manifest/manifest_parser.cc

Index: content/renderer/manifest/manifest_parser.cc
diff --git a/content/renderer/manifest/manifest_parser.cc b/content/renderer/manifest/manifest_parser.cc
index 19b69a540278b1782cda702ed986fbe0e91f453b..59d2eddd27d3fcb611ea96501953265df5bb9a32 100644
--- a/content/renderer/manifest/manifest_parser.cc
+++ b/content/renderer/manifest/manifest_parser.cc
@@ -11,23 +11,39 @@
 #include "base/values.h"
 #include "content/public/common/manifest.h"
 
+namespace content {
+
 namespace {
 
-// Parses the 'name' field of the manifest, as defined in:
-// http://w3c.github.io/manifest/#dfn-steps-for-processing-the-name-member
-// Returns the parsed string if any, a null string if the parsing failed.
-base::NullableString16 ParseName(const base::DictionaryValue& dictionary)  {
-  if (!dictionary.HasKey("name"))
+enum TrimType {
+  Trim,
+  NoTrim
+};
+
+base::NullableString16 ParseString(const base::DictionaryValue& dictionary,
+                                   const std::string& key,
+                                   TrimType trim) {
+  if (!dictionary.HasKey(key))
     return base::NullableString16();
 
-  base::string16 name;
-  if (!dictionary.GetString("name", &name)) {
-    // TODO(mlamouri): provide a custom message to the developer console.
+  base::string16 value;
+  if (!dictionary.GetString(key, &value)) {
+    // TODO(mlamouri): provide a custom message to the developer console about
+    // the property being incorrectly set.
     return base::NullableString16();
   }
 
-  base::TrimWhitespace(name, base::TRIM_ALL, &name);
-  return base::NullableString16(name, false);
+  if (trim == Trim) {
+    base::TrimWhitespace(value, base::TRIM_ALL, &value);
+  }

[Avi (use Gerrit), 2014/09/18 02:00:02]

No {} here; you don't use it above for a one-line if block.

+  return base::NullableString16(value, false);
+}
+
+// Parses the 'name' field of the manifest, as defined in:
+// http://w3c.github.io/manifest/#dfn-steps-for-processing-the-name-member
+// Returns the parsed string if any, a null string if the parsing failed.
+base::NullableString16 ParseName(const base::DictionaryValue& dictionary)  {
+  return ParseString(dictionary, "name", Trim);
 }
 
 // Parses the 'short_name' field of the manifest, as defined in:
@@ -35,17 +51,7 @@ base::NullableString16 ParseName(const base::DictionaryValue& dictionary)  {
 // Returns the parsed string if any, a null string if the parsing failed.
 base::NullableString16 ParseShortName(
     const base::DictionaryValue& dictionary)  {
-  if (!dictionary.HasKey("short_name"))
-    return base::NullableString16();
-
-  base::string16 short_name;
-  if (!dictionary.GetString("short_name", &short_name)) {
-    // TODO(mlamouri): provide a custom message to the developer console.
-    return base::NullableString16();
-  }
-
-  base::TrimWhitespace(short_name, base::TRIM_ALL, &short_name);
-  return base::NullableString16(short_name, false);
+  return ParseString(dictionary, "short_name", Trim);
 }
 
 // Parses the 'start_url' field of the manifest, as defined in:
@@ -54,16 +60,13 @@ base::NullableString16 ParseShortName(
 GURL ParseStartURL(const base::DictionaryValue& dictionary,
                    const GURL& manifest_url,
                    const GURL& document_url) {
-  if (!dictionary.HasKey("start_url"))
-    return GURL();
+  base::NullableString16 start_url_str =
+      ParseString(dictionary, "start_url", NoTrim);
 
-  base::string16 start_url_str;
-  if (!dictionary.GetString("start_url", &start_url_str)) {
-    // TODO(mlamouri): provide a custom message to the developer console.
+  if (start_url_str.is_null())
     return GURL();
-  }
 
-  GURL start_url = manifest_url.Resolve(start_url_str);
+  GURL start_url = manifest_url.Resolve(start_url_str.string());
   if (!start_url.is_valid())
     return GURL();
 
@@ -75,9 +78,29 @@ GURL ParseStartURL(const base::DictionaryValue& dictionary,
   return start_url;
 }
 
-} // anonymous namespace
+// Parses the 'display' field of the manifest, as defined in:
+// http://w3c.github.io/manifest/#dfn-steps-for-processing-the-display-member
+// Returns the parsed DisplayMode if any, DISPLAY_MODE_UNSPECIFIED if the
+// parsing failed.
+Manifest::DisplayMode ParseDisplay(const base::DictionaryValue& dictionary) {
+  base::NullableString16 display = ParseString(dictionary, "display", Trim);
+
+  if (display.is_null())
+    return Manifest::DISPLAY_MODE_UNSPECIFIED;
+
+  if (LowerCaseEqualsASCII(display.string(), "fullscreen"))
+    return Manifest::DISPLAY_MODE_FULLSCREEN;
+  else if (LowerCaseEqualsASCII(display.string(), "standalone"))
+    return Manifest::DISPLAY_MODE_STANDALONE;
+  else if (LowerCaseEqualsASCII(display.string(), "minimal-ui"))
+    return Manifest::DISPLAY_MODE_MINIMAL_UI;
+  else if (LowerCaseEqualsASCII(display.string(), "browser"))
+    return Manifest::DISPLAY_MODE_BROWSER;
+  else
+    return Manifest::DISPLAY_MODE_UNSPECIFIED;
+}
 
-namespace content {
+} // anonymous namespace
 
 Manifest ManifestParser::Parse(const base::StringPiece& json,
                                const GURL& manifest_url,
@@ -106,6 +129,7 @@ Manifest ManifestParser::Parse(const base::StringPiece& json,
   manifest.name = ParseName(*dictionary);
   manifest.short_name = ParseShortName(*dictionary);
   manifest.start_url = ParseStartURL(*dictionary, manifest_url, document_url);
+  manifest.display = ParseDisplay(*dictionary);
 
   return manifest;
 }