Cross-process postMessage

content/browser/browsing_instance_frame_id.h

+// Copyright (c) 2011 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.
+
+#ifndef CONTENT_BROWSER_BROWSING_INSTANCE_FRAME_ID_H_
+#define CONTENT_BROWSER_BROWSING_INSTANCE_FRAME_ID_H_
+
+#include "base/basictypes.h"
+#include "base/hash_tables.h"
+#include <list>
+
+namespace content {
+class FrameMap;
+
+class BrowsingInstanceFrame {

[Charlie Reis, 2011/12/12 22:20:36]

Don't forget comments in this class.  It's basically in charge of knowing how to
reach all active and non-active WebKit Frames for any frame the browser knows
about, right?

[supersat, 2011/12/15 19:30:49]

Done.

+  friend class FrameMap;

[Charlie Reis, 2011/12/12 22:20:36]

Why not just use setters?

[supersat, 2011/12/15 19:30:49]

The idea was to make sure that people update ContentFrames through the FrameMap
so it has a consistent view of all ContentFrames. If this is too weird I can
change it.

+
+  public:

[Charlie Reis, 2011/12/12 22:20:36]

Indent is wrong.

[supersat, 2011/12/15 19:30:49]

Done.

[supersat, 2011/12/15 19:30:49]

Done.

+    struct WebKitFrameIdTuple {
+      WebKitFrameIdTuple(int process_host_id, int64 frame_id);
+      bool operator==(const WebKitFrameIdTuple& other) const;
+
+      int process_host_id;
+      int64 frame_id;
+    };
+
+    BrowsingInstanceFrame(int64 id, bool is_top_level);
+    virtual ~BrowsingInstanceFrame();
+
+    int64 id() { return id_; }
+
+    const WebKitFrameIdTuple current_webkit_frame() const {
+      return current_webkit_frame_;
+    }
+
+    int current_process_host_id() const {
+      return current_webkit_frame_.process_host_id;
+    }
+
+    int current_route_id() const {
+      return current_route_id_;
+    }
+
+    int64 current_frame_id() const {
+      return current_webkit_frame_.frame_id;
+    }
+
+    bool is_top_level() const {
+      return is_top_level_;
+    }
+
+    void UpdateFrame(int new_process_host_id,
+                     int new_route_id,
+                     int64 new_frame_id);
+
+  private:
+    int64 id_;
+
+    WebKitFrameIdTuple current_webkit_frame_;
+    int current_route_id_;
+    bool is_top_level_;
+
+    std::list<WebKitFrameIdTuple> all_webkit_frames_;
+};
+
+}  // namespace content
+
+#if defined(COMPILER_GCC)
+namespace __gnu_cxx {
+
+template<>
+struct hash<content::BrowsingInstanceFrame::WebKitFrameIdTuple> {
+  std::size_t operator()(const
+      content::BrowsingInstanceFrame::WebKitFrameIdTuple& p) const {
+    return p.process_host_id * 65537 + p.process_host_id * 257 + p.frame_id;
+  }
+};
+
+}  // namespace __gnu_cxx
+#endif
+
+#endif  // CONTENT_BROWSER_BROWSING_INSTANCE_FRAME_ID_H_