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libcef:

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- Add support for embedded netscape-style plugins.
- Add new webkit_glue VisitedLinkHash() and IsLinkVisited() functions required by underlying chromium changes.
cefclient:
- Add sample netscape-style plugin implementation and related Plugin item on the Tests menu.
- Increase the speed of the update timer so that buttons refresh closer to real-time.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@5 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
2008-12-14 04:49:18 +00:00
parent d0639c9f4e
commit a08ad505ad
31 changed files with 4417 additions and 12 deletions
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268
libcef/plugins/browser_plugin_instance.h Normal file
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// Copyright (c) 2008 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2006-2008 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.
// TODO: Need to deal with NPAPI's NPSavedData.
// I haven't seen plugins use it yet.
#ifndef _BROWSER_PLUGIN_INSTANCE_H
#define _BROWSER_PLUGIN_INSTANCE_H
#include <string>
#include <vector>
#include <stack>
#include "base/basictypes.h"
#include "base/file_path.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "base/thread_local_storage.h"
#include "webkit/glue/plugins/nphostapi.h"
#include "googleurl/src/gurl.h"
#include "third_party/npapi/bindings/npapi.h"
class WebPlugin;
class MessageLoop;
namespace NPAPI
{
class BrowserPluginLib;
class BrowserPluginStream;
class BrowserPluginStreamUrl;
class BrowserPluginDataStream;
class BrowserMozillaExtensionApi;
class PluginHost;
// A BrowserPluginInstance is an active, running instance of a Plugin.
// A single plugin may have many BrowserPluginInstances.
class BrowserPluginInstance : public base::RefCountedThreadSafe<BrowserPluginInstance> {
public:
// Create a new instance of a plugin. The BrowserPluginInstance
// will hold a reference to the plugin.
BrowserPluginInstance(BrowserPluginLib *plugin, const std::string &mime_type);
virtual ~BrowserPluginInstance();
// Activates the instance by calling NPP_New.
// This should be called after our instance is all
// setup from the host side and we are ready to receive
// requests from the plugin. We must not call any
// functions on the plugin instance until start has
// been called.
//
// url: The instance URL.
// param_names: the list of names of attributes passed via the
// element.
// param_values: the list of values corresponding to param_names
// param_count: number of attributes
// load_manually: if true indicates that the plugin data would be passed
// from webkit. if false indicates that the plugin should
// download the data.
// This also controls whether the plugin is instantiated as
// a full page plugin (NP_FULL) or embedded (NP_EMBED)
//
bool Start(const GURL& url,
char** const param_names,
char** const param_values,
int param_count,
bool load_manually);
// NPAPI's instance identifier for this instance
NPP npp() { return npp_; }
#if defined(OS_WIN)
// Get/Set for the instance's HWND.
HWND window_handle() { return hwnd_; }
void set_window_handle(HWND value) { hwnd_ = value; }
#endif
// Get/Set whether this instance is in Windowless mode.
// Default is false.
bool windowless() { return windowless_; }
void set_windowless(bool value) { windowless_ = value; }
// Get/Set whether this instance is transparent.
// This only applies to windowless plugins. Transparent
// plugins require that webkit paint the background.
// Default is true.
bool transparent() { return transparent_; }
void set_transparent(bool value) { transparent_ = value; }
// Get/Set the WebPlugin associated with this instance
WebPlugin* webplugin() { return webplugin_; }
void set_web_plugin(WebPlugin* webplugin) { webplugin_ = webplugin; }
// Get the mimeType for this plugin stream
const std::string &mime_type() { return mime_type_; }
NPAPI::BrowserPluginLib* plugin_lib() { return plugin_; }
#if defined(OS_WIN)
// Handles a windows native message which this BrowserPluginInstance should deal
// with. Returns true if the event is handled, false otherwise.
bool HandleEvent(UINT message, WPARAM wParam, LPARAM lParam);
#endif
// Creates a stream for sending an URL. If notify_needed
// is true, it will send a notification to the plugin
// when the stream is complete; otherwise it will not.
// Set object_url to true if the load is for the object tag's
// url, or false if it's for a url that the plugin
// fetched through NPN_GetUrl[Notify].
BrowserPluginStreamUrl *CreateStream(int resource_id,
const std::string &url,
const std::string &mime_type,
bool notify_needed,
void *notify_data);
// For each instance, we track all streams. When the
// instance closes, all remaining streams are also
// closed. All streams associated with this instance
// should call AddStream so that they can be cleaned
// up when the instance shuts down.
void AddStream(BrowserPluginStream* stream);
// This is called when a stream is closed. We remove the stream from the
// list, which releases the reference maintained to the stream.
void RemoveStream(BrowserPluginStream* stream);
// Closes all open streams on this instance.
void CloseStreams();
// Have the plugin create it's script object.
NPObject *GetPluginScriptableObject();
// WebViewDelegate methods that we implement. This is for handling
// callbacks during getURLNotify.
virtual void DidFinishLoadWithReason(NPReason reason);
// Helper method to set some persistent data for getURLNotify since
// resource fetches happen async.
void SetURLLoadData(const GURL& url, void* notify_data);
// If true, send the Mozilla user agent instead of Chrome's to the plugin.
bool use_mozilla_user_agent() { return use_mozilla_user_agent_; }
void set_use_mozilla_user_agent() { use_mozilla_user_agent_ = true; }
// Helper that implements NPN_PluginThreadAsyncCall semantics
void PluginThreadAsyncCall(void (*func)(void *),
void *userData);
//
// NPAPI methods for calling the Plugin Instance
//
NPError NPP_New(unsigned short, short, char *[], char *[]);
NPError NPP_SetWindow(NPWindow *);
NPError NPP_NewStream(NPMIMEType, NPStream *, NPBool, unsigned short *);
NPError NPP_DestroyStream(NPStream *, NPReason);
int NPP_WriteReady(NPStream *);
int NPP_Write(NPStream *, int, int, void *);
void NPP_StreamAsFile(NPStream *, const char *);
void NPP_URLNotify(const char *, NPReason, void *);
NPError NPP_GetValue(NPPVariable, void *);
NPError NPP_SetValue(NPNVariable, void *);
short NPP_HandleEvent(NPEvent *);
void NPP_Destroy();
bool NPP_Print(NPPrint* platform_print);
void SendJavaScriptStream(const std::string& url, const std::wstring& result,
bool success, bool notify_needed, int notify_data);
void DidReceiveManualResponse(const std::string& url,
const std::string& mime_type,
const std::string& headers,
uint32 expected_length,
uint32 last_modified);
void DidReceiveManualData(const char* buffer, int length);
void DidFinishManualLoading();
void DidManualLoadFail();
NPError GetServiceManager(void** service_manager);
static BrowserPluginInstance* SetInitializingInstance(BrowserPluginInstance* instance);
static BrowserPluginInstance* GetInitializingInstance();
void PushPopupsEnabledState(bool enabled);
void PopPopupsEnabledState();
bool popups_allowed() const {
return popups_enabled_stack_.empty() ? false : popups_enabled_stack_.top();
}
// Initiates byte range reads for plugins.
void RequestRead(NPStream* stream, NPByteRange* range_list);
private:
void OnPluginThreadAsyncCall(void (*func)(void *),
void *userData);
bool IsValidStream(const NPStream* stream);
// This is a hack to get the real player plugin to work with chrome
// The real player plugin dll(nppl3260) when loaded by firefox is loaded via
// the NS COM API which is analogous to win32 COM. So the NPAPI functions in
// the plugin are invoked via an interface by firefox. The plugin instance
// handle which is passed to every NPAPI method is owned by the real player
// plugin, i.e. it expects the ndata member to point to a structure which
// it knows about. Eventually it dereferences this structure and compares
// a member variable at offset 0x24(Version 6.0.11.2888) /2D (Version
// 6.0.11.3088) with 0 and on failing this check, takes a different code
// path which causes a crash. Safari and Opera work with version 6.0.11.2888
// by chance as their ndata structure contains a 0 at the location which real
// player checks:(. They crash with version 6.0.11.3088 as well. The
// following member just adds a 96 byte padding to our BrowserPluginInstance class
// which is passed in the ndata member. This magic number works correctly on
// Vista with UAC on or off :(.
// NOTE: Please dont change the ordering of the member variables
// New members should be added after this padding array.
// TODO(iyengar) : Disassemble the Realplayer ndata structure and look into
// the possiblity of conforming to it (http://b/issue?id=936667). We
// could also log a bug with Real, which would save the effort.
uint8 zero_padding_[96];
scoped_refptr<NPAPI::BrowserPluginLib> plugin_;
NPP npp_;
scoped_refptr<PluginHost> host_;
NPPluginFuncs* npp_functions_;
std::vector<scoped_refptr<BrowserPluginStream> > open_streams_;
#if defined(OS_WIN)
HWND hwnd_;
#endif
bool windowless_;
bool transparent_;
WebPlugin* webplugin_;
std::string mime_type_;
GURL get_url_;
void* get_notify_data_;
bool use_mozilla_user_agent_;
#if defined(OS_WIN)
scoped_refptr<BrowserMozillaExtensionApi> mozilla_extenstions_;
#endif
MessageLoop* message_loop_;
// Using TLS to store BrowserPluginInstance object during its creation.
// We need to pass this instance to the service manager
// (MozillaExtensionApi) created as a result of NPN_GetValue
// in the context of NP_Initialize.
static ThreadLocalStorage::Slot plugin_instance_tls_index_;
scoped_refptr<BrowserPluginStreamUrl> plugin_data_stream_;
GURL instance_url_;
// This flag if true indicates that the plugin data would be passed from
// webkit. if false indicates that the plugin should download the data.
bool load_manually_;
// Stack indicating if popups are to be enabled for the outgoing
// NPN_GetURL/NPN_GetURLNotify calls.
std::stack<bool> popups_enabled_stack_;
// True if in CloseStreams().
bool in_close_streams_;
// List of files created for the current plugin instance. File names are
// added to the list every time the NPP_StreamAsFile function is called.
std::vector<FilePath> files_created_;
DISALLOW_EVIL_CONSTRUCTORS(BrowserPluginInstance);
};
} // namespace NPAPI
#endif // _BROWSER_PLUGIN_INSTANCE_H