content/child/npapi/webplugin_delegate.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_NPAPI_WEBPLUGIN_DELEGATE_H_
   6 #define CONTENT_CHILD_NPAPI_WEBPLUGIN_DELEGATE_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/strings/string16.h"
  12 #include "build/build_config.h"
  13 #include "content/common/cursors/webcursor.h"
  14 #include "third_party/npapi/bindings/npapi.h"
  15 #include "ui/gfx/native_widget_types.h"
  16
  17 class GURL;
  18 class SkCanvas;
  19 struct NPObject;
  20
  21 namespace blink {
  22 class WebInputEvent;
  23 }
  24
  25 namespace gfx {
  26 class Rect;
  27 }
  28
  29 namespace content {
  30
  31 class WebPluginResourceClient;
  32
  33 // This is the interface that a plugin implementation needs to provide.
  34 class WebPluginDelegate {
  35  public:
  36   virtual ~WebPluginDelegate() {}
  37
  38   // Initializes the plugin implementation with the given (UTF8) arguments.
  39   // Note that the lifetime of WebPlugin must be longer than this delegate.
  40   // If this function returns false the plugin isn't started and shouldn't be
  41   // called again.  If this method succeeds, then the WebPlugin is valid until
  42   // PluginDestroyed is called.
  43   // The load_manually parameter if true indicates that the plugin data would
  44   // be passed from webkit. if false indicates that the plugin should download
  45   // the data. This also controls whether the plugin is instantiated as a full
  46   // page plugin (NP_FULL) or embedded (NP_EMBED).
  47   virtual bool Initialize(const GURL& url,
  48                           const std::vector<std::string>& arg_names,
  49                           const std::vector<std::string>& arg_values,
  50                           bool load_manually) = 0;
  51
  52   // Called when the WebPlugin is being destroyed.  This is a signal to the
  53   // delegate that it should tear-down the plugin implementation and not call
  54   // methods on the WebPlugin again.
  55   virtual void PluginDestroyed() = 0;
  56
  57   // Update the geometry of the plugin.  This is a request to move the
  58   // plugin, relative to its containing window, to the coords given by
  59   // window_rect.  Its contents should be clipped to the coords given
  60   // by clip_rect, which are relative to the origin of the plugin
  61   // window.  The clip_rect is in plugin-relative coordinates.
  62   virtual void UpdateGeometry(const gfx::Rect& window_rect,
  63                               const gfx::Rect& clip_rect) = 0;
  64
  65   // Tells the plugin to paint the damaged rect.  |canvas| is only used for
  66   // windowless plugins.
  67   virtual void Paint(SkCanvas* canvas, const gfx::Rect& rect) = 0;
  68
  69   // Informs the plugin that it has gained or lost focus. This is only called in
  70   // windowless mode.
  71   virtual void SetFocus(bool focused) = 0;
  72
  73   // For windowless plugins, gives them a user event like mouse/keyboard.
  74   // Returns whether the event was handled. This is only called in windowsless
  75   // mode. See NPAPI NPP_HandleEvent for more information.
  76   virtual bool HandleInputEvent(const blink::WebInputEvent& event,
  77                                 WebCursor::CursorInfo* cursor) = 0;
  78
  79   // Gets the NPObject associated with the plugin for scripting.
  80   virtual NPObject* GetPluginScriptableObject() = 0;
  81
  82   // Gets the NPP instance uniquely identifying the plugin for its lifetime.
  83   virtual struct _NPP* GetPluginNPP() = 0;
  84
  85   // Gets the form value associated with the plugin instance.
  86   // Returns false if the value is not available.
  87   virtual bool GetFormValue(base::string16* value) = 0;
  88
  89   // Receives notification about a resource load that the plugin initiated
  90   // for a frame.
  91   virtual void DidFinishLoadWithReason(const GURL& url, NPReason reason,
  92                                        int notify_id) = 0;
  93
  94   // Returns the process id of the process that is running the plugin.
  95   virtual int GetProcessId() = 0;
  96
  97   // The result, UTF-8 encoded, of the script execution is returned via this
  98   // function.
  99   virtual void SendJavaScriptStream(const GURL& url,
 100                                     const std::string& result,
 101                                     bool success,
 102                                     int notify_id) = 0;
 103
 104   // Receives notification about data being available.
 105   virtual void DidReceiveManualResponse(const GURL& url,
 106                                         const std::string& mime_type,
 107                                         const std::string& headers,
 108                                         uint32 expected_length,
 109                                         uint32 last_modified) = 0;
 110
 111   // Receives the data.
 112   virtual void DidReceiveManualData(const char* buffer, int length) = 0;
 113
 114   // Indicates end of data load.
 115   virtual void DidFinishManualLoading() = 0;
 116
 117   // Indicates a failure in data receipt.
 118   virtual void DidManualLoadFail() = 0;
 119
 120   // Creates a WebPluginResourceClient instance and returns the same.
 121   virtual WebPluginResourceClient* CreateResourceClient(
 122       unsigned long resource_id,
 123       const GURL& url,
 124       int notify_id) = 0;
 125
 126   // Creates a WebPluginResourceClient instance for an existing stream that is
 127   // has become seekable.
 128   virtual WebPluginResourceClient* CreateSeekableResourceClient(
 129       unsigned long resource_id, int range_request_id) = 0;
 130
 131   // Tell the plugin that the given URL should be fetched. This is a result of
 132   // loading the plugin data or the plugin calling HandleURLRequest which didn't
 133   // end up being routed to another frame or being a javscript:// URL.
 134   virtual void FetchURL(unsigned long resource_id,
 135                         int notify_id,
 136                         const GURL& url,
 137                         const GURL& first_party_for_cookies,
 138                         const std::string& method,
 139                         const char* buf,
 140                         unsigned int len,
 141                         const GURL& referrer,
 142                         bool notify_redirects,
 143                         bool is_plugin_src_load,
 144                         int origin_pid,
 145                         int render_frame_id,
 146                         int render_view_id) = 0;
 147
 148 };
 149
 150 }  // namespace content
 151
 152 #endif  // CONTENT_CHILD_NPAPI_WEBPLUGIN_DELEGATE_H_