ppapi/c/ppp_instance.h - chromium/src - Git at Google

 /* Copyright (c) 2012 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.
  */

 /* From ppp_instance.idl modified Thu Apr 25 13:07:47 2013. */

 #ifndef PPAPI_C_PPP_INSTANCE_H_
 #define PPAPI_C_PPP_INSTANCE_H_

 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_point.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_size.h"
 #include "ppapi/c/pp_stdint.h"

 #define PPP_INSTANCE_INTERFACE_1_0 "PPP_Instance;1.0"
 #define PPP_INSTANCE_INTERFACE_1_1 "PPP_Instance;1.1"
 #define PPP_INSTANCE_INTERFACE PPP_INSTANCE_INTERFACE_1_1

 /**
  * @file
  * This file defines the <code>PPP_Instance</code> structure - a series of
  * pointers to methods that you must implement in your module.
  */


 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
  * The <code>PPP_Instance</code> interface contains pointers to a series of
  * functions that you must implement in your module. These functions can be
  * trivial (simply return the default return value) unless you want your module
  * to handle events such as change of focus or input events (keyboard/mouse)
  * events.
  */
 struct PPP_Instance_1_1 {
   /**
    * DidCreate() is a creation handler that is called when a new instance is
    * created. This function is called for each instantiation on the page,
    * corresponding to one \<embed\> tag on the page.
    *
    * Generally you would handle this call by initializing the information
    * your module associates with an instance and creating a mapping from the
    * given <code>PP_Instance</code> handle to this data. The
    * <code>PP_Instance</code> handle will be used in subsequent calls to
    * identify which instance the call pertains to.
    *
    * It's possible for more than one instance to be created in a single module.
    * This means that you may get more than one <code>OnCreate</code> without an
    * <code>OnDestroy</code> in between, and should be prepared to maintain
    * multiple states associated with each instance.
    *
    * If this function reports a failure (by returning <code>PP_FALSE</code>),
    * the instance will be deleted.
    *
    * @param[in] instance A new <code>PP_Instance</code> identifying one
    * instance of a module. This is an opaque handle.
    *
    * @param[in] argc The number of arguments contained in <code>argn</code>
    * and <code>argv</code>.
    *
    * @param[in] argn An array of argument names.  These argument names are
    * supplied in the \<embed\> tag, for example:
    * <code>\<embed id="nacl_module" dimensions="2"\></code> will produce two
    * argument names: "id" and "dimensions."
    *
    * @param[in] argv An array of argument values.  These are the values of the
    * arguments listed in the \<embed\> tag, for example
    * <code>\<embed id="nacl_module" dimensions="2"\></code> will produce two
    * argument values: "nacl_module" and "2".  The indices of these values match
    * the indices of the corresponding names in <code>argn</code>.
    *
    * @return <code>PP_TRUE</code> on success or <code>PP_FALSE</code> on
    * failure.
    */
   PP_Bool (*DidCreate)(PP_Instance instance,
                        uint32_t argc,
                        const char* argn[],
                        const char* argv[]);
   /**
    * DidDestroy() is an instance destruction handler. This function is called
    * in many cases (see below) when a module instance is destroyed. It will be
    * called even if DidCreate() returned failure.
    *
    * Generally you will handle this call by deallocating the tracking
    * information and the <code>PP_Instance</code> mapping you created in the
    * DidCreate() call. You can also free resources associated with this
    * instance but this isn't required; all resources associated with the deleted
    * instance will be automatically freed when this function returns.
    *
    * The instance identifier will still be valid during this call, so the module
    * can perform cleanup-related tasks. Once this function returns, the
    * <code>PP_Instance</code> handle will be invalid. This means that you can't
    * do any asynchronous operations like network requests, file writes or
    * messaging from this function since they will be immediately canceled.
    *
    * <strong>Note:</strong> This function will always be skipped on untrusted
    * (Native Client) implementations. This function may be skipped on trusted
    * implementations in certain circumstances when Chrome does "fast shutdown"
    * of a web page. Fast shutdown will happen in some cases when all module
    * instances are being deleted, and no cleanup functions will be called.
    * The module will just be unloaded and the process terminated.
    *
    * @param[in] instance A <code>PP_Instance</code> identifying one instance
    * of a module.
    */
   void (*DidDestroy)(PP_Instance instance);
   /**
    * <code>DidChangeView() is called when the position, size, or other view
    * attributes of the instance has changed.
    */
   void (*DidChangeView)(PP_Instance instance, PP_Resource view);
   /**
    * DidChangeFocus() is called when an instance has gained or lost focus.
    * Having focus means that keyboard events will be sent to the instance.
    * An instance's default condition is that it will not have focus.
    *
    * The focus flag takes into account both browser tab and window focus as
    * well as focus of the plugin element on the page. In order to be deemed
    * to have focus, the browser window must be topmost, the tab must be
    * selected in the window, and the instance must be the focused element on
    * the page.
    *
    * <strong>Note:</strong>Clicks on instances will give focus only if you
    * handle the click event. Return <code>true</code> from
    * <code>HandleInputEvent</code> in <code>PPP_InputEvent</code> (or use
    * unfiltered events) to signal that the click event was handled. Otherwise,
    * the browser will bubble the event and give focus to the element on the page
    * that actually did end up consuming it. If you're not getting focus, check
    * to make sure you're either requesting them via
    * <code>RequestInputEvents()<code> (which implicitly marks all input events
    * as consumed) or via <code>RequestFilteringInputEvents()</code> and
    * returning true from your event handler.
    *
    * @param[in] instance A <code>PP_Instance</code> identifying the instance
    * receiving the input event.
    *
    * @param[in] has_focus Indicates the new focused state of the instance.
    */
   void (*DidChangeFocus)(PP_Instance instance, PP_Bool has_focus);
   /**
    * HandleDocumentLoad() is called after initialize for a full-frame
    * instance that was instantiated based on the MIME type of a DOMWindow
    * navigation. This situation only applies to modules that are pre-registered
    * to handle certain MIME types. If you haven't specifically registered to
    * handle a MIME type or aren't positive this applies to you, your
    * implementation of this function can just return <code>PP_FALSE</code>.
    *
    * The given <code>url_loader</code> corresponds to a
    * <code>PPB_URLLoader</code> instance that is already opened. Its response
    * headers may be queried using <code>PPB_URLLoader::GetResponseInfo</code>.
    * The reference count for the URL loader is not incremented automatically on
    * behalf of the module. You need to increment the reference count yourself
    * if you are going to keep a reference to it.
    *
    * This method returns <code>PP_FALSE</code> if the module cannot handle the
    * data. In response to this method, the module should call
    * ReadResponseBody() to read the incoming data.
    *
    * @param[in] instance A <code>PP_Instance</code> identifying the instance
    * that should do the load.
    *
    * @param[in] url_loader An open <code>PPB_URLLoader</code> instance.
    *
    * @return <code>PP_TRUE</code> if the data was handled,
    * <code>PP_FALSE</code> otherwise.  If you return false, the load will be
    * canceled for you.
    */
   PP_Bool (*HandleDocumentLoad)(PP_Instance instance, PP_Resource url_loader);
 };

 typedef struct PPP_Instance_1_1 PPP_Instance;

 struct PPP_Instance_1_0 {
   PP_Bool (*DidCreate)(PP_Instance instance,
                        uint32_t argc,
                        const char* argn[],
                        const char* argv[]);
   void (*DidDestroy)(PP_Instance instance);
   void (*DidChangeView)(PP_Instance instance,
                         const struct PP_Rect* position,
                         const struct PP_Rect* clip);
   void (*DidChangeFocus)(PP_Instance instance, PP_Bool has_focus);
   PP_Bool (*HandleDocumentLoad)(PP_Instance instance, PP_Resource url_loader);
 };
 /**
  * @}
  */

 #endif  /* PPAPI_C_PPP_INSTANCE_H_ */
	/* Copyright (c) 2012 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.
	*/

	/* From ppp_instance.idl modified Thu Apr 25 13:07:47 2013. */

	#ifndef PPAPI_C_PPP_INSTANCE_H_
	#define PPAPI_C_PPP_INSTANCE_H_

	#include "ppapi/c/pp_bool.h"
	#include "ppapi/c/pp_instance.h"
	#include "ppapi/c/pp_macros.h"
	#include "ppapi/c/pp_point.h"
	#include "ppapi/c/pp_rect.h"
	#include "ppapi/c/pp_resource.h"
	#include "ppapi/c/pp_size.h"
	#include "ppapi/c/pp_stdint.h"

	#define PPP_INSTANCE_INTERFACE_1_0 "PPP_Instance;1.0"
	#define PPP_INSTANCE_INTERFACE_1_1 "PPP_Instance;1.1"
	#define PPP_INSTANCE_INTERFACE PPP_INSTANCE_INTERFACE_1_1

	/**
	* @file
	* This file defines the <code>PPP_Instance</code> structure - a series of
	* pointers to methods that you must implement in your module.
	*/


	/**
	* @addtogroup Interfaces
	* @{
	*/
	/**
	* The <code>PPP_Instance</code> interface contains pointers to a series of
	* functions that you must implement in your module. These functions can be
	* trivial (simply return the default return value) unless you want your module
	* to handle events such as change of focus or input events (keyboard/mouse)
	* events.
	*/
	struct PPP_Instance_1_1 {
	/**
	* DidCreate() is a creation handler that is called when a new instance is
	* created. This function is called for each instantiation on the page,
	* corresponding to one \<embed\> tag on the page.
	*
	* Generally you would handle this call by initializing the information
	* your module associates with an instance and creating a mapping from the
	* given <code>PP_Instance</code> handle to this data. The
	* <code>PP_Instance</code> handle will be used in subsequent calls to
	* identify which instance the call pertains to.
	*
	* It's possible for more than one instance to be created in a single module.
	* This means that you may get more than one <code>OnCreate</code> without an
	* <code>OnDestroy</code> in between, and should be prepared to maintain
	* multiple states associated with each instance.
	*
	* If this function reports a failure (by returning <code>PP_FALSE</code>),
	* the instance will be deleted.
	*
	* @param[in] instance A new <code>PP_Instance</code> identifying one
	* instance of a module. This is an opaque handle.
	*
	* @param[in] argc The number of arguments contained in <code>argn</code>
	* and <code>argv</code>.
	*
	* @param[in] argn An array of argument names. These argument names are
	* supplied in the \<embed\> tag, for example:
	* <code>\<embed id="nacl_module" dimensions="2"\></code> will produce two
	* argument names: "id" and "dimensions."
	*
	* @param[in] argv An array of argument values. These are the values of the
	* arguments listed in the \<embed\> tag, for example
	* <code>\<embed id="nacl_module" dimensions="2"\></code> will produce two
	* argument values: "nacl_module" and "2". The indices of these values match
	* the indices of the corresponding names in <code>argn</code>.
	*
	* @return <code>PP_TRUE</code> on success or <code>PP_FALSE</code> on
	* failure.
	*/
	PP_Bool (*DidCreate)(PP_Instance instance,
	uint32_t argc,
	const char* argn[],
	const char* argv[]);
	/**
	* DidDestroy() is an instance destruction handler. This function is called
	* in many cases (see below) when a module instance is destroyed. It will be
	* called even if DidCreate() returned failure.
	*
	* Generally you will handle this call by deallocating the tracking
	* information and the <code>PP_Instance</code> mapping you created in the
	* DidCreate() call. You can also free resources associated with this
	* instance but this isn't required; all resources associated with the deleted
	* instance will be automatically freed when this function returns.
	*
	* The instance identifier will still be valid during this call, so the module
	* can perform cleanup-related tasks. Once this function returns, the
	* <code>PP_Instance</code> handle will be invalid. This means that you can't
	* do any asynchronous operations like network requests, file writes or
	* messaging from this function since they will be immediately canceled.
	*
	* <strong>Note:</strong> This function will always be skipped on untrusted
	* (Native Client) implementations. This function may be skipped on trusted
	* implementations in certain circumstances when Chrome does "fast shutdown"
	* of a web page. Fast shutdown will happen in some cases when all module
	* instances are being deleted, and no cleanup functions will be called.
	* The module will just be unloaded and the process terminated.
	*
	* @param[in] instance A <code>PP_Instance</code> identifying one instance
	* of a module.
	*/
	void (*DidDestroy)(PP_Instance instance);
	/**
	* <code>DidChangeView() is called when the position, size, or other view
	* attributes of the instance has changed.
	*/
	void (*DidChangeView)(PP_Instance instance, PP_Resource view);
	/**
	* DidChangeFocus() is called when an instance has gained or lost focus.
	* Having focus means that keyboard events will be sent to the instance.
	* An instance's default condition is that it will not have focus.
	*
	* The focus flag takes into account both browser tab and window focus as
	* well as focus of the plugin element on the page. In order to be deemed
	* to have focus, the browser window must be topmost, the tab must be
	* selected in the window, and the instance must be the focused element on
	* the page.
	*
	* <strong>Note:</strong>Clicks on instances will give focus only if you
	* handle the click event. Return <code>true</code> from
	* <code>HandleInputEvent</code> in <code>PPP_InputEvent</code> (or use
	* unfiltered events) to signal that the click event was handled. Otherwise,
	* the browser will bubble the event and give focus to the element on the page
	* that actually did end up consuming it. If you're not getting focus, check
	* to make sure you're either requesting them via
	* <code>RequestInputEvents()<code> (which implicitly marks all input events
	* as consumed) or via <code>RequestFilteringInputEvents()</code> and
	* returning true from your event handler.
	*
	* @param[in] instance A <code>PP_Instance</code> identifying the instance
	* receiving the input event.
	*
	* @param[in] has_focus Indicates the new focused state of the instance.
	*/
	void (*DidChangeFocus)(PP_Instance instance, PP_Bool has_focus);
	/**
	* HandleDocumentLoad() is called after initialize for a full-frame
	* instance that was instantiated based on the MIME type of a DOMWindow
	* navigation. This situation only applies to modules that are pre-registered
	* to handle certain MIME types. If you haven't specifically registered to
	* handle a MIME type or aren't positive this applies to you, your
	* implementation of this function can just return <code>PP_FALSE</code>.
	*
	* The given <code>url_loader</code> corresponds to a
	* <code>PPB_URLLoader</code> instance that is already opened. Its response
	* headers may be queried using <code>PPB_URLLoader::GetResponseInfo</code>.
	* The reference count for the URL loader is not incremented automatically on
	* behalf of the module. You need to increment the reference count yourself
	* if you are going to keep a reference to it.
	*
	* This method returns <code>PP_FALSE</code> if the module cannot handle the
	* data. In response to this method, the module should call
	* ReadResponseBody() to read the incoming data.
	*
	* @param[in] instance A <code>PP_Instance</code> identifying the instance
	* that should do the load.
	*
	* @param[in] url_loader An open <code>PPB_URLLoader</code> instance.
	*
	* @return <code>PP_TRUE</code> if the data was handled,
	* <code>PP_FALSE</code> otherwise. If you return false, the load will be
	* canceled for you.
	*/
	PP_Bool (*HandleDocumentLoad)(PP_Instance instance, PP_Resource url_loader);
	};

	typedef struct PPP_Instance_1_1 PPP_Instance;

	struct PPP_Instance_1_0 {
	PP_Bool (*DidCreate)(PP_Instance instance,
	uint32_t argc,
	const char* argn[],
	const char* argv[]);
	void (*DidDestroy)(PP_Instance instance);
	void (*DidChangeView)(PP_Instance instance,
	const struct PP_Rect* position,
	const struct PP_Rect* clip);
	void (*DidChangeFocus)(PP_Instance instance, PP_Bool has_focus);
	PP_Bool (*HandleDocumentLoad)(PP_Instance instance, PP_Resource url_loader);
	};
	/**
	* @}
	*/

	#endif /* PPAPI_C_PPP_INSTANCE_H_ */