Implements extensions devtools API

chrome/browser/extensions/extension_devtools_events.cc

+// Copyright (c) 2009 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/extensions/extension_devtools_events.h"
+
+#include <vector>
+
+#include "base/string_util.h"
+
+// These string constants and the formats used in this file must stay
+// in sync with chrome/renderer/resources/extension_process_bindings.js
+static const char kDevToolsEventPrefix[] = "devtools.";
+static const char kOnPageEventName[] = "onPageEvent";
+static const char kOnTabUrlChangeEventName[] = "onTabUrlChange";
+static const char kOnTabCloseEventName[] = "onTabClose";
+
+// static
+bool ExtensionDevToolsEvents::IsDevToolsEventName(
+    const std::string& event_name, int* tab_id) {
+  // We only care about events of the form "devtools.34.*", where 34 is
+  // a tab id.
+  if (IsStringASCII(event_name) &&
+      StartsWithASCII(event_name,
+                      kDevToolsEventPrefix,
+                      true /* case_sensitive */)) {
+    // At this point we want something like "4.onPageEvent"
+    std::vector<std::string> parts;
+    SplitString(event_name.substr(strlen(kDevToolsEventPrefix)), '.', &parts);
+    if (parts.size() == 2 && StringToInt(parts[0], tab_id)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// static
+std::string ExtensionDevToolsEvents::OnPageEventNameForTab(int tab_id) {
+  return StringPrintf("%s%d.%s",
+                      kDevToolsEventPrefix,
+                      tab_id,
+                      kOnPageEventName);
+}
+
+// static
+std::string ExtensionDevToolsEvents::OnTabUrlChangeEventNameForTab(int tab_id) {
+  return StringPrintf("%s%d.%s",
+                      kDevToolsEventPrefix,
+                      tab_id,
+                      kOnTabUrlChangeEventName);
+}
+
+// static
+std::string ExtensionDevToolsEvents::OnTabCloseEventNameForTab(int tab_id) {
+  return StringPrintf("%s%d.%s",
+                      kDevToolsEventPrefix,
+                      tab_id,
+                      kOnTabCloseEventName);
+}
+