Add webkit to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@18 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 163 insertions, 0 deletions

diff --git a/webkit/glue/plugins/plugin_lib.h b/webkit/glue/plugins/plugin_lib.h
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+++ b/webkit/glue/plugins/plugin_lib.h
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef WEBKIT_GLUE_PLUGIN_PLUGIN_LIB_H__
+#define WEBKIT_GLUE_PLUGIN_PLUGIN_LIB_H__
+
+#include <hash_map>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/ref_counted.h"
+#include "base/scoped_ptr.h"
+#include "webkit/glue/plugins/nphostapi.h"
+#include "third_party/npapi/bindings/npapi.h"
+
+struct WebPluginInfo;
+
+namespace NPAPI
+{
+
+class PluginInstance;
+
+// This struct fully describes a plugin. For dll plugins, it's read in from
+// the version info of the dll; For internal plugins, it's predefined.
+struct PluginVersionInfo {
+  std::wstring file_name;
+  std::wstring product_name;
+  std::wstring file_description;
+  std::wstring file_version;
+  std::wstring mime_types;
+  std::wstring file_extents;
+  std::wstring file_open_names;
+};
+
+// This struct contains information of an internal plugin and addresses of
+// entry functions.
+struct InternalPluginInfo {
+  PluginVersionInfo version_info;
+  NP_GetEntryPointsFunc np_getentrypoints;
+  NP_InitializeFunc np_initialize;
+  NP_ShutdownFunc np_shutdown;
+};
+
+// A PluginLib is a single NPAPI Plugin Library, and is the lifecycle
+// manager for new PluginInstances.
+class PluginLib : public base::RefCounted<PluginLib> {
+ public:
+  virtual ~PluginLib();
+  static PluginLib* CreatePluginLib(const std::wstring& filename);
+
+  // Unloads all the loaded plugin dlls and cleans up the plugin map.
+  static void UnloadAllPlugins();
+
+  // Shuts down all loaded plugin instances.
+  static void ShutdownAllPlugins();
+
+  // Get the Plugin's function pointer table.
+  NPPluginFuncs *functions();
+
+  // Returns true if this Plugin supports a given mime-type.
+  // mime_type should be all lower case.
+  bool SupportsType(const std::string &mime_type, bool allow_wildcard);
+
+  // Creates a new instance of this plugin.
+  PluginInstance *CreateInstance(const std::string &mime_type);
+
+  // Called by the instance when the instance is tearing down.
+  void CloseInstance();
+
+  // Gets information about this plugin and the mime types that it
+  // supports.
+  const WebPluginInfo& plugin_info() { return *web_plugin_info_; }
+
+  //
+  // NPAPI functions
+  //
+
+  // NPAPI method to initialize a Plugin.
+  // Initialize can be safely called multiple times
+  NPError NP_Initialize();
+
+  // NPAPI method to shutdown a Plugin.
+  void NP_Shutdown(void);
+
+  // Helper function to load a plugin.
+  // Returns the module handle on success.
+  static HMODULE LoadPluginHelper(const std::wstring plugin_file);
+ 
+  int instance_count() const { return instance_count_; }
+
+ private:
+  // Creates a new PluginLib.  The WebPluginInfo object is owned by this
+  // object. If internal_plugin_info is not NULL, this Lib is an internal
+  // plugin thus doesn't need to load dll.
+  PluginLib(WebPluginInfo* info,
+            const InternalPluginInfo* internal_plugin_info);
+
+  // Attempts to load the plugin from the DLL.
+  // Returns true if it is a legitimate plugin, false otherwise
+  bool Load();
+
+  // Unloading the plugin DLL.
+  void Unload();
+
+  // Shutdown the plugin DLL.
+  void Shutdown();
+
+  // Returns a WebPluginInfo structure given a plugin's path.  Returns NULL if
+  // the dll couldn't be found, or if it's not a plugin.
+  static WebPluginInfo* ReadWebPluginInfo(const std::wstring &filename);
+  // Creates WebPluginInfo structure based on read in or built in
+  // PluginVersionInfo.
+  static WebPluginInfo* CreateWebPluginInfo(const PluginVersionInfo& info);
+
+  bool             internal_;         // Whether this an internal plugin.
+  scoped_ptr<WebPluginInfo> web_plugin_info_;  // supported mime types, description
+  HMODULE          module_;           // the opened DLL handle
+  NPPluginFuncs    plugin_funcs_;     // the struct of plugin side functions
+  bool             initialized_;      // is the plugin initialized
+  NPSavedData     *saved_data_;       // persisted plugin info for NPAPI
+  int              instance_count_;   // count of plugins in use
+
+  // A map of all the insantiated plugins.
+  typedef stdext::hash_map<std::wstring, scoped_refptr<PluginLib> > PluginMap;
+  static PluginMap* loaded_libs_;
+
+  // C-style function pointers
+  NP_InitializeFunc       NP_Initialize_;
+  NP_GetEntryPointsFunc   NP_GetEntryPoints_;
+  NP_ShutdownFunc         NP_Shutdown_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(PluginLib);
+};
+
+} // namespace NPAPI
+
+#endif  // WEBKIT_GLUE_PLUGIN_PLUGIN_LIB_H__