--- /dev/null
+// Copyright (c) 2014 The Chromium Embedded Framework 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 CEF_LIBCEF_DLL_WRAPPER_CEF_BROWSER_INFO_MAP_H_
+#define CEF_LIBCEF_DLL_WRAPPER_CEF_BROWSER_INFO_MAP_H_
+#pragma once
+
+#include <map>
+
+#include "include/base/cef_logging.h"
+#include "include/base/cef_macros.h"
+
+// Default traits for CefBrowserInfoMap. Override to provide different object
+// destruction behavior.
+template<typename ObjectType>
+struct DefaultCefBrowserInfoMapTraits {
+ static void Destruct(ObjectType info) {
+ delete info;
+ }
+};
+
+// Maps an arbitrary IdType to an arbitrary ObjectType on a per-browser basis.
+template <typename IdType,
+ typename ObjectType,
+ typename Traits = DefaultCefBrowserInfoMapTraits<ObjectType> >
+class CefBrowserInfoMap {
+ public:
+ // Implement this interface to visit and optionally delete objects in the map.
+ class Visitor {
+ public:
+ typedef IdType InfoIdType;
+ typedef ObjectType InfoObjectType;
+
+ // Called once for each info object. Set |remove| to true to remove the
+ // object from the map. It is safe to destruct removed objects in this
+ // callback. Return true to continue iterating or false to stop iterating.
+ virtual bool OnNextInfo(int browser_id,
+ InfoIdType info_id,
+ InfoObjectType info,
+ bool* remove) =0;
+
+ protected:
+ virtual ~Visitor() {}
+ };
+
+ CefBrowserInfoMap() {}
+
+ ~CefBrowserInfoMap() {
+ clear();
+ }
+
+ // Add an object associated with the specified ID values.
+ void Add(int browser_id, IdType info_id, ObjectType info) {
+ InfoMap* info_map = NULL;
+ typename BrowserInfoMap::const_iterator it_browser =
+ browser_info_map_.find(browser_id);
+ if (it_browser == browser_info_map_.end()) {
+ // No InfoMap exists for the browser ID so create it.
+ info_map = new InfoMap;
+ browser_info_map_.insert(std::make_pair(browser_id, info_map));
+ } else {
+ info_map = it_browser->second;
+ // The specified ID should not already exist in the map.
+ DCHECK(info_map->find(info_id) == info_map->end());
+ }
+
+ info_map->insert(std::make_pair(info_id, info));
+ }
+
+ // Find the object with the specified ID values. |visitor| can optionally be
+ // used to evaluate or remove the object at the same time. If the object is
+ // removed using the Visitor the caller is responsible for destroying it.
+ ObjectType Find(int browser_id, IdType info_id, Visitor* vistor) {
+ if (browser_info_map_.empty())
+ return ObjectType();
+
+ typename BrowserInfoMap::iterator it_browser =
+ browser_info_map_.find(browser_id);
+ if (it_browser == browser_info_map_.end())
+ return ObjectType();
+
+ InfoMap* info_map = it_browser->second;
+ typename InfoMap::iterator it_info = info_map->find(info_id);
+ if (it_info == info_map->end())
+ return ObjectType();
+
+ ObjectType info = it_info->second;
+
+ bool remove = false;
+ if (vistor)
+ vistor->OnNextInfo(browser_id, it_info->first, info, &remove);
+ if (remove) {
+ info_map->erase(it_info);
+
+ if (info_map->empty()) {
+ // No more entries in the InfoMap so remove it.
+ browser_info_map_.erase(it_browser);
+ delete info_map;
+ }
+ }
+
+ return info;
+ }
+
+ // Find all objects. If any objects are removed using the Visitor the caller
+ // is responsible for destroying them.
+ void FindAll(Visitor* visitor) {
+ DCHECK(visitor);
+
+ if (browser_info_map_.empty())
+ return;
+
+ bool remove, keepgoing = true;
+
+ typename BrowserInfoMap::iterator it_browser = browser_info_map_.begin();
+ while (it_browser != browser_info_map_.end()) {
+ InfoMap* info_map = it_browser->second;
+
+ typename InfoMap::iterator it_info = info_map->begin();
+ while (it_info != info_map->end()) {
+ remove = false;
+ keepgoing = visitor->OnNextInfo(it_browser->first, it_info->first,
+ it_info->second, &remove);
+
+ if (remove)
+ info_map->erase(it_info++);
+ else
+ ++it_info;
+
+ if (!keepgoing)
+ break;
+ }
+
+ if (info_map->empty()) {
+ // No more entries in the InfoMap so remove it.
+ browser_info_map_.erase(it_browser++);
+ delete info_map;
+ } else {
+ ++it_browser;
+ }
+
+ if (!keepgoing)
+ break;
+ }
+ }
+
+ // Find all objects associated with the specified browser. If any objects are
+ // removed using the Visitor the caller is responsible for destroying them.
+ void FindAll(int browser_id, Visitor* visitor) {
+ DCHECK(visitor);
+
+ if (browser_info_map_.empty())
+ return;
+
+ typename BrowserInfoMap::iterator it_browser =
+ browser_info_map_.find(browser_id);
+ if (it_browser == browser_info_map_.end())
+ return;
+
+ InfoMap* info_map = it_browser->second;
+ bool remove, keepgoing;
+
+ typename InfoMap::iterator it_info = info_map->begin();
+ while (it_info != info_map->end()) {
+ remove = false;
+ keepgoing = visitor->OnNextInfo(browser_id, it_info->first,
+ it_info->second, &remove);
+
+ if (remove)
+ info_map->erase(it_info++);
+ else
+ ++it_info;
+
+ if (!keepgoing)
+ break;
+ }
+
+ if (info_map->empty()) {
+ // No more entries in the InfoMap so remove it.
+ browser_info_map_.erase(it_browser);
+ delete info_map;
+ }
+ }
+
+ // Returns true if the map is empty.
+ bool empty() const { return browser_info_map_.empty(); }
+
+ // Returns the number of objects in the map.
+ size_t size() const {
+ if (browser_info_map_.empty())
+ return 0;
+
+ size_t size = 0;
+ typename BrowserInfoMap::const_iterator it_browser =
+ browser_info_map_.begin();
+ for (; it_browser != browser_info_map_.end(); ++it_browser)
+ size += it_browser->second->size();
+ return size;
+ }
+
+ // Returns the number of objects in the map that are associated with the
+ // specified browser.
+ size_t size(int browser_id) const {
+ if (browser_info_map_.empty())
+ return 0;
+
+ typename BrowserInfoMap::const_iterator it_browser =
+ browser_info_map_.find(browser_id);
+ if (it_browser != browser_info_map_.end())
+ return it_browser->second->size();
+
+ return 0;
+ }
+
+ // Remove all objects from the map. The objects will be destructed.
+ void clear() {
+ if (browser_info_map_.empty())
+ return;
+
+ typename BrowserInfoMap::const_iterator it_browser =
+ browser_info_map_.begin();
+ for (; it_browser != browser_info_map_.end(); ++it_browser) {
+ InfoMap* info_map = it_browser->second;
+ typename InfoMap::const_iterator it_info = info_map->begin();
+ for (; it_info != info_map->end(); ++it_info)
+ Traits::Destruct(it_info->second);
+ delete info_map;
+ }
+ browser_info_map_.clear();
+ }
+
+ // Remove all objects from the map that are associated with the specified
+ // browser. The objects will be destructed.
+ void clear(int browser_id) {
+ if (browser_info_map_.empty())
+ return;
+
+ typename BrowserInfoMap::iterator it_browser =
+ browser_info_map_.find(browser_id);
+ if (it_browser == browser_info_map_.end())
+ return;
+
+ InfoMap* info_map = it_browser->second;
+ typename InfoMap::const_iterator it_info = info_map->begin();
+ for (; it_info != info_map->end(); ++it_info)
+ Traits::Destruct(it_info->second);
+
+ browser_info_map_.erase(it_browser);
+ delete info_map;
+ }
+
+ private:
+ // Map IdType to ObjectType instance.
+ typedef std::map<IdType, ObjectType> InfoMap;
+ // Map browser ID to InfoMap instance.
+ typedef std::map<int, InfoMap*> BrowserInfoMap;
+
+ BrowserInfoMap browser_info_map_;
+
+ DISALLOW_COPY_AND_ASSIGN(CefBrowserInfoMap);
+};
+
+
+#endif // CEF_LIBCEF_DLL_WRAPPER_CEF_BROWSER_INFO_MAP_H_
projects / casparcg / blobdiff