Move EventFilter, EventFilteringInfo and EventMatcher

classes to extensions/common/

TBR=ben@chromium.org
BUG=162530

Review URL: https://chromiumcodereview.appspot.com/12208078

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@181849 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 47 insertions, 0 deletions

diff --git a/extensions/common/event_matcher.cc b/extensions/common/event_matcher.cc
new file mode 100644
index 0000000..c982937
--- /dev/null
+++ b/extensions/common/event_matcher.cc
@@ -0,0 +1,47 @@
+// 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 "extensions/common/event_matcher.h"
+
+#include "extensions/common/event_filtering_info.h"
+
+namespace {
+const char kUrlFiltersKey[] = "url";
+}
+
+namespace extensions {
+
+EventMatcher::EventMatcher(scoped_ptr<base::DictionaryValue> filter)
+    : filter_(filter.Pass()) {
+}
+
+EventMatcher::~EventMatcher() {
+}
+
+bool EventMatcher::MatchNonURLCriteria(
+    const EventFilteringInfo& event_info) const {
+  // There is currently no criteria apart from URL criteria.
+  return true;
+}
+
+int EventMatcher::GetURLFilterCount() const {
+  base::ListValue* url_filters = NULL;
+  if (filter_->GetList(kUrlFiltersKey, &url_filters))
+    return url_filters->GetSize();
+  return 0;
+}
+
+bool EventMatcher::GetURLFilter(int i, base::DictionaryValue** url_filter_out) {
+  base::ListValue* url_filters = NULL;
+  if (filter_->GetList(kUrlFiltersKey, &url_filters)) {
+    return url_filters->GetDictionary(i, url_filter_out);
+  }
+  return false;
+}
+
+int EventMatcher::HasURLFilters() const {
+  return GetURLFilterCount() != 0;
+}
+
+}  // namespace extensions