content/common/content_notification_types.h - chromium/src - Git at Google

 // Copyright (c) 2011 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.

 #ifndef CONTENT_COMMON_NOTIFICATION_TYPE_H_
 #define CONTENT_COMMON_NOTIFICATION_TYPE_H_
 #pragma once

 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
 namespace content {

 enum {
   NOTIFICATION_CONTENT_START = 0,

   // General -----------------------------------------------------------------

   // Special signal value to represent an interest in all notifications.
   // Not valid when posting a notification.
   NOTIFICATION_ALL = NOTIFICATION_CONTENT_START,

   // The app is done processing user actions, now is a good time to do
   // some background work.
   NOTIFICATION_IDLE,

   // Means that the app has just started doing something in response to a
   // user action, and that background processes shouldn't run if avoidable.
   NOTIFICATION_BUSY,

   // This is sent when the user does a gesture resulting in a noteworthy
   // action taking place. This is typically used for logging. The source is
   // the browser context, and the details is a string identifying the action.
   NOTIFICATION_USER_ACTION,

   // NavigationController ----------------------------------------------------

   // A new pending navigation has been created. Pending entries are created
   // when the user requests the navigation. We don't know if it will actually
   // happen until it does (at this point, it will be "committed." Note that
   // renderer- initiated navigations such as link clicks will never be
   // pending.
   //
   // This notification is called after the pending entry is created, but
   // before we actually try to navigate. The source will be the
   // NavigationController that owns the pending entry, and there are no
   // details.
   NOTIFICATION_NAV_ENTRY_PENDING,

   // A new non-pending navigation entry has been created. This will
   // correspond to one NavigationController entry being created (in the case
   // of new navigations) or renavigated to (for back/forward navigations).
   //
   // The source will be the navigation controller doing the commit. The
   // details will be NavigationController::LoadCommittedDetails.
   NOTIFICATION_NAV_ENTRY_COMMITTED,

   // Indicates that the NavigationController given in the Source has
   // decreased its back/forward list count by removing entries from either
   // the front or back of its list. This is usually the result of going back
   // and then doing a new navigation, meaning all the "forward" items are
   // deleted.
   //
   // This normally happens as a result of a new navigation. It will be
   // followed by a NAV_ENTRY_COMMITTED message for the new page that
   // caused the pruning. It could also be a result of removing an item from
   // the list to fix up after interstitials.
   //
   // The details are NavigationController::PrunedDetails.
   NOTIFICATION_NAV_LIST_PRUNED,

   // Indicates that a NavigationEntry has changed. The source will be the
   // NavigationController that owns the NavigationEntry. The details will be
   // a NavigationController::EntryChangedDetails struct.
   //
   // This will NOT be sent on navigation, interested parties should also
   // listen for NAV_ENTRY_COMMITTED to handle that case. This will be
   // sent when the entry is updated outside of navigation (like when a new
   // title comes).
   NOTIFICATION_NAV_ENTRY_CHANGED,

   // Other load-related (not from NavigationController) ----------------------

   // Corresponds to ViewHostMsg_DocumentOnLoadCompletedInMainFrame. The source
   // is the TabContents and the details the page_id.
   NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,

   // A content load is starting.  The source will be a
   // Source<NavigationController> corresponding to the tab in which the load
   // is occurring.  No details are expected for this notification.
   NOTIFICATION_LOAD_START,

   // A content load has stopped. The source will be a
   // Source<NavigationController> corresponding to the tab in which the load
   // is occurring.  Details in the form of a LoadNotificationDetails object
   // are optional.
   NOTIFICATION_LOAD_STOP,

   // Content was loaded from an in-memory cache.  The source will be a
   // Source<NavigationController> corresponding to the tab in which the load
   // occurred.  Details in the form of a LoadFromMemoryCacheDetails object
   // are provided.
   NOTIFICATION_LOAD_FROM_MEMORY_CACHE,

   // A provisional content load has failed with an error.  The source will be
   // a Source<NavigationController> corresponding to the tab in which the
   // load occurred.  Details in the form of a ProvisionalLoadDetails object
   // are provided.
   NOTIFICATION_FAIL_PROVISIONAL_LOAD_WITH_ERROR,

   // A response has been received for a resource request.  The source will be
   // a Source<RenderViewHostDelegate> corresponding to the tab in which the
   // request was issued.  Details in the form of a ResourceRequestDetails
   // object are provided.
   NOTIFICATION_RESOURCE_RESPONSE_STARTED,

   // A redirect was received while requesting a resource.  The source will be
   // a Source<RenderViewHostDelegate> corresponding to the tab in which the
   // request was issued.  Details in the form of a ResourceRedirectDetails
   // are provided.
   NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,

   // A new tab is created from an existing tab to serve as a target of a
   // navigation that is about to happen. The source will be a
   // Source<BrowserContext> corresponding to the browser context in which the
   // new tab will live. Details in the form of a RetargetingDetails object are
   // provided.
   NOTIFICATION_RETARGETING,

   // A new window was requested but was not created. The source will be a
   // Source<TabContents> corresponding to the tab the request originated from.
   // Details are the ViewHostMsg_CreateWindow_Params object that were used in
   // the request.
   NOTIFICATION_CREATING_NEW_WINDOW_CANCELLED,

   // SSL ---------------------------------------------------------------------

   // Updating the SSL security indicators (the lock icon and such) proceeds
   // in two phases:
   //
   // 1) The internal SSL state for a host or tab changes.  When this happens,
   //    the SSLManager broadcasts an SSL_INTERNAL_STATE_CHANGED notification.
   //
   // 2) The SSLManager for each tab receives this notification and might or
   //    might not update the navigation entry for its tab, depending on
   //    whether the change in state affects that tab.  If the SSLManager does
   //    change the navigation entry, then the SSLManager broadcasts an
   //    SSL_VISIBLE_STATE_CHANGED notification to the user interface can
   //    redraw properly.

   // The SSL state of a page has changed in some visible way.  For example,
   // if an insecure resource is loaded on a secure page.  Note that a
   // toplevel load commit will also update the SSL state (since the
   // NavigationEntry is new) and this message won't always be sent in that
   // case.  Listen to this notification if you need to refresh SSL-related UI
   // elements.
   //
   // There is no source or details.
   NOTIFICATION_SSL_VISIBLE_STATE_CHANGED,

   // The SSL state of the browser has changed in some internal way.  For
   // example, the user might have explicitly allowed some broken certificate
   // or a secure origin might have included some insecure content.  Listen to
   // this notifiation if you need to keep track of our internal SSL state.
   //
   // The source will be the browser context. The details will be the navigation
   // controller associated with the state change.
   NOTIFICATION_SSL_INTERNAL_STATE_CHANGED,

   // The user accepted or dismissed a SSL client authentication request.
   // The source is a Source<SSLClientAuthHandler>.  Details is a
   // SSLClientAuthNotificationDetails which records specifies which
   // SSLCertRequestInfo the request was for and which X509Certificate was
   // selected (if any).
   NOTIFICATION_SSL_CLIENT_AUTH_CERT_SELECTED,

 #if defined(OS_MACOSX)
   // This message is sent when the application is made active (Mac OS X only
   // at present). No source or details are passed.
   NOTIFICATION_APP_ACTIVATED,
 #endif

   // This message is sent when the application is terminating (the last
   // browser window has shutdown as part of an explicit user-initiated exit,
   // or the user closed the last browser window on Windows/Linux and there are
   // no BackgroundContents keeping the browser running). No source or details
   // are passed.
   NOTIFICATION_APP_TERMINATING,

 #if defined(OS_MACOSX)
   // This notification is sent when the app has no key window, such as when
   // all windows are closed but the app is still active. No source or details
   // are provided.
   NOTIFICATION_NO_KEY_WINDOW,
 #endif

   // This is sent when the user has chosen to exit the app, but before any
   // browsers have closed. This is sent if the user chooses to exit
   // (via exit menu item or keyboard shortcut) or to restart the process
   // (such as in flags page), not if Chrome exists by some other means
   // (such as the user closing the last window). Note that receiving this
   // notification does not necessarily mean the process will exit
   // because the shutdown process can be cancelled by unload handler.
   // Use APP_TERMINATING for such needs.
   //  The source and details are unspecified.
   NOTIFICATION_APP_EXITING,

   // Indicates that a devtools window is closing. The source is the
   // content::BrowserContext* and the details is the inspected RenderViewHost*.
   NOTIFICATION_DEVTOOLS_WINDOW_CLOSING,

   // Tabs --------------------------------------------------------------------

   // Sent when a tab is added to a TabContentsDelegate. The source is the
   // TabContentsDelegate and the details is the added TabContents.
   NOTIFICATION_TAB_ADDED,

   // This notification is sent after a tab has been appended to the tab_strip.
   // The source is a Source<TabContentsWrapper> of the tab being added. There
   // are no details.
   NOTIFICATION_TAB_PARENTED,

   // This message is sent before a tab has been closed.  The source is a
   // Source<NavigationController> with a pointer to the controller for the
   // closed tab.  No details are expected.
   //
   // See also TAB_CLOSED.
   NOTIFICATION_TAB_CLOSING,

   // Notification that a tab has been closed. The source is the
   // NavigationController with no details.
   NOTIFICATION_TAB_CLOSED,

   // This notification is sent when a render view host has connected to a
   // renderer process. The source is a Source<TabContents> with a pointer to
   // the TabContents.  A TAB_CONTENTS_DISCONNECTED notification is
   // guaranteed before the source pointer becomes junk.  No details are
   // expected.
   NOTIFICATION_TAB_CONTENTS_CONNECTED,

   // This notification is sent when a TabContents swaps its render view host
   // with another one, possibly changing processes. The source is a
   // Source<TabContents> with a pointer to the TabContents.  A
   // TAB_CONTENTS_DISCONNECTED notification is guaranteed before the
   // source pointer becomes junk.  No details are expected.
   NOTIFICATION_TAB_CONTENTS_SWAPPED,

   // This message is sent after a TabContents is disconnected from the
   // renderer process.  The source is a Source<TabContents> with a pointer to
   // the TabContents (the pointer is usable).  No details are expected.
   NOTIFICATION_TAB_CONTENTS_DISCONNECTED,

   // This notification is sent after TabContents' title is updated. The source
   // is a Source<TabContents> with a pointer to the TabContents. The details
   // is a Details<TitleUpdatedDetails> that contains more information.
   NOTIFICATION_TAB_CONTENTS_TITLE_UPDATED,

   // This notification is sent when a TabContents is being hidden, e.g. due
   // to switching away from this tab.  The source is a Source<TabContents>.
   NOTIFICATION_TAB_CONTENTS_HIDDEN,

   // This notification is sent when a TabContents is being destroyed. Any
   // object holding a reference to a TabContents can listen to that
   // notification to properly reset the reference. The source is a
   // Source<TabContents>.
   NOTIFICATION_TAB_CONTENTS_DESTROYED,

   // A RenderViewHost was created for a TabContents. The source is the
   // associated TabContents, and the details is the RenderViewHost
   // pointer.
   NOTIFICATION_RENDER_VIEW_HOST_CREATED_FOR_TAB,

   // Notification than an interstitial has become associated with a tab. The
   // source is the TabContents, the details not used.
   NOTIFICATION_INTERSTITIAL_ATTACHED,

   // Indicates that a RenderProcessHost was created and its handle is now
   // available. The source will be the RenderProcessHost that corresponds to
   // the process.
   NOTIFICATION_RENDERER_PROCESS_CREATED,

   // Indicates that a RenderProcessHost is destructing. The source will be the
   // RenderProcessHost that corresponds to the process.
   NOTIFICATION_RENDERER_PROCESS_TERMINATED,

   // Indicates that a render process is starting to exit, such that it should
   // not be used for future navigations.  The source will be the
   // RenderProcessHost that corresponds to the process.
   NOTIFICATION_RENDERER_PROCESS_CLOSING,

   // Indicates that a render process was closed (meaning it exited, but the
   // RenderProcessHost might be reused).  The source will be the corresponding
   // RenderProcessHost.  The details will be a RendererClosedDetails struct.
   // This may get sent along with RENDERER_PROCESS_TERMINATED.
   NOTIFICATION_RENDERER_PROCESS_CLOSED,

   // Indicates that a render process has become unresponsive for a period of
   // time. The source will be the RenderWidgetHost that corresponds to the
   // hung view, and no details are expected.
   NOTIFICATION_RENDERER_PROCESS_HANG,

   // This is sent to notify that the RenderViewHost displayed in a
   // TabContents has changed.  Source is the TabContents for which the change
   // happened, details is the previous RenderViewHost (can be NULL when the
   // first RenderViewHost is set).
   NOTIFICATION_RENDER_VIEW_HOST_CHANGED,

   // Indicates that the render view host has received an accessibility tree
   // update, either partial or full, from the render view.  The source is the
   // RenderViewHost, the details are not used.
   NOTIFICATION_RENDER_VIEW_HOST_ACCESSIBILITY_TREE_UPDATED,

   // This is sent when a RenderWidgetHost is being destroyed. The source is
   // the RenderWidgetHost, the details are not used.
   NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,

   // Sent after the widget has painted. The source is the RenderWidgetHost,
   // the details are not used.
   NOTIFICATION_RENDER_WIDGET_HOST_DID_PAINT,

   // This notifies the observer that a PaintAtSizeACK was received. The source
   // is the RenderWidgetHost, the details are an instance of
   // RenderWidgetHost::PaintAtSizeAckDetails.
   NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_PAINT_AT_SIZE_ACK,

   // This notifies the observer that a HandleInputEventACK was received. The
   // source is the RenderWidgetHost, the details are the type of event
   // received.
   // Note: The RenderWidgetHost may be deallocated at this point.
   // Used only in testing.
   NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_INPUT_EVENT_ACK,

   // Sent from RenderViewHost constructor. The source is the RenderViewHost,
   // the details unused.
   NOTIFICATION_RENDER_VIEW_HOST_CREATED,

   // Sent from ~RenderViewHost. The source is the RenderViewHost, the details
   // unused.
   NOTIFICATION_RENDER_VIEW_HOST_DELETED,

   // Sent from RenderViewHost::ClosePage.  The hosted RenderView has
   // processed the onbeforeunload handler and is about to be sent a
   // ViewMsg_ClosePage message to complete the tear-down process.  The source
   // is the RenderViewHost sending the message, and no details are provided.
   // Note:  This message is not sent in response to RenderView closure
   // initiated by window.close().
   NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW,

   // This notifies the observer that the drag operation ack in a drag and
   // drop operation was received. The source is the RenderViewHost.
   // Note: Used only in testing.
   NOTIFICATION_RENDER_VIEW_HOST_DID_RECEIVE_DRAG_TARGET_DROP_ACK,

   // Indicates a RenderWidgetHost has been hidden or restored. The source is
   // the RWH whose visibility changed, the details is a bool set to true if
   // the new state is "visible."
   NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED,

   // Sent from ~SiteInstance.  The source is the SiteInstance, and the details
   // are unused.
   NOTIFICATION_SITE_INSTANCE_DELETED,

   // The focused element inside a page has changed.  The source is the
   // TabContents containing the render view host for the page. The details is
   // a Details<const bool> that indicates whether or not an editable node was
   // focused.
   NOTIFICATION_FOCUS_CHANGED_IN_PAGE,

   // Notification posted from ExecuteJavascriptInWebFrameNotifyResult. The
   // source is the RenderViewHost ExecuteJavascriptInWebFrameNotifyResult was
   // invoked on. The details are a std::pair<int, Value*> with the int giving
   // the id returned from ExecuteJavascriptInWebFrameNotifyResult and the
   // Value the results of the javascript expression. The Value is owned by
   // RenderViewHost and may be a Null Value.
   NOTIFICATION_EXECUTE_JAVASCRIPT_RESULT,

   // Child Processes ---------------------------------------------------------

   // This notification is sent when a child process host has connected to a
   // child process.  There is no usable source, since it is sent from an
   // ephemeral task; register for AllSources() to receive this notification.
   // The details are in a Details<ChildProcessInfo>.
   NOTIFICATION_CHILD_PROCESS_HOST_CONNECTED,

   // This message is sent after a ChildProcessHost is disconnected from the
   // child process.  There is no usable source, since it is sent from an
   // ephemeral task; register for AllSources() to receive this notification.
   // The details are in a Details<ChildProcessInfo>.
   NOTIFICATION_CHILD_PROCESS_HOST_DISCONNECTED,

   // This message is sent when a child process disappears
   // unexpectedly as a result of a crash.  There is no usable
   // source, since it is sent from an ephemeral task; register for
   // AllSources() to receive this notification.  The details are in
   // a Details<ChildProcessInfo>.
   NOTIFICATION_CHILD_PROCESS_CRASHED,

   // This message is sent when a child process disappears
   // unexpectedly as a result of a termination signal.  There is no
   // usable source, since it is sent from an ephemeral task;
   // register for AllSources() to receive this notification.  The
   // details are in a Details<ChildProcessInfo>.
   NOTIFICATION_CHILD_PROCESS_WAS_KILLED,

   // This message indicates that an instance of a particular child was
   // created in a page.  (If one page contains several regions rendered by
   // the same child, this notification will occur once for each region
   // during the page load.)
   //
   // There is no usable source, since it is sent from an ephemeral task;
   // register for AllSources() to receive this notification.  The details are
   // in a Details<ChildProcessInfo>.
   NOTIFICATION_CHILD_INSTANCE_CREATED,

   // Sent by the PluginUpdater when there is a change of plugin
   // enable/disable status.
   NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED,

   // Download Notifications --------------------------------------------------

   // Sent when a page generation to MHTML has finished.
   // The source is the corresponding RenderViewHost. The details is a
   // MHTMLGenerationManager::NotificationDetails.
   NOTIFICATION_MHTML_GENERATED,

   // Saved Pages -------------------------------------------------------------

   // Sent when a SavePackage finishes successfully. The source is the
   // SavePackage, and Details are a GURL containing address of downloaded
   // page.
   NOTIFICATION_SAVE_PACKAGE_SUCCESSFULLY_FINISHED,

   // Purge Memory ------------------------------------------------------------

   // Sent on the IO thread when the system should try to reduce the amount of
   // memory in use, no source or details are passed. See memory_purger.h .cc.
   NOTIFICATION_PURGE_MEMORY,

   // Sent before the repost form warning is brought up.
   // The source is a NavigationController.
   NOTIFICATION_REPOST_WARNING_SHOWN,

   // Sent when the zoom level changes. The source is the HostZoomMap.  The
   // details is a string of the hostname for which the zoom changed.  In case
   // of a temporary zoom level change, the details is an empty string.
   NOTIFICATION_ZOOM_LEVEL_CHANGED,

   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };

 }  // namespace content

 #endif  // CONTENT_COMMON_NOTIFICATION_TYPE_H_
	// Copyright (c) 2011 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.

	#ifndef CONTENT_COMMON_NOTIFICATION_TYPE_H_
	#define CONTENT_COMMON_NOTIFICATION_TYPE_H_
	#pragma once

	// This file describes various types used to describe and filter notifications
	// that pass through the NotificationService.
	//
	namespace content {

	enum {
	NOTIFICATION_CONTENT_START = 0,

	// General -----------------------------------------------------------------

	// Special signal value to represent an interest in all notifications.
	// Not valid when posting a notification.
	NOTIFICATION_ALL = NOTIFICATION_CONTENT_START,

	// The app is done processing user actions, now is a good time to do
	// some background work.
	NOTIFICATION_IDLE,

	// Means that the app has just started doing something in response to a
	// user action, and that background processes shouldn't run if avoidable.
	NOTIFICATION_BUSY,

	// This is sent when the user does a gesture resulting in a noteworthy
	// action taking place. This is typically used for logging. The source is
	// the browser context, and the details is a string identifying the action.
	NOTIFICATION_USER_ACTION,

	// NavigationController ----------------------------------------------------

	// A new pending navigation has been created. Pending entries are created
	// when the user requests the navigation. We don't know if it will actually
	// happen until it does (at this point, it will be "committed." Note that
	// renderer- initiated navigations such as link clicks will never be
	// pending.
	//
	// This notification is called after the pending entry is created, but
	// before we actually try to navigate. The source will be the
	// NavigationController that owns the pending entry, and there are no
	// details.
	NOTIFICATION_NAV_ENTRY_PENDING,

	// A new non-pending navigation entry has been created. This will
	// correspond to one NavigationController entry being created (in the case
	// of new navigations) or renavigated to (for back/forward navigations).
	//
	// The source will be the navigation controller doing the commit. The
	// details will be NavigationController::LoadCommittedDetails.
	NOTIFICATION_NAV_ENTRY_COMMITTED,

	// Indicates that the NavigationController given in the Source has
	// decreased its back/forward list count by removing entries from either
	// the front or back of its list. This is usually the result of going back
	// and then doing a new navigation, meaning all the "forward" items are
	// deleted.
	//
	// This normally happens as a result of a new navigation. It will be
	// followed by a NAV_ENTRY_COMMITTED message for the new page that
	// caused the pruning. It could also be a result of removing an item from
	// the list to fix up after interstitials.
	//
	// The details are NavigationController::PrunedDetails.
	NOTIFICATION_NAV_LIST_PRUNED,

	// Indicates that a NavigationEntry has changed. The source will be the
	// NavigationController that owns the NavigationEntry. The details will be
	// a NavigationController::EntryChangedDetails struct.
	//
	// This will NOT be sent on navigation, interested parties should also
	// listen for NAV_ENTRY_COMMITTED to handle that case. This will be
	// sent when the entry is updated outside of navigation (like when a new
	// title comes).
	NOTIFICATION_NAV_ENTRY_CHANGED,

	// Other load-related (not from NavigationController) ----------------------

	// Corresponds to ViewHostMsg_DocumentOnLoadCompletedInMainFrame. The source
	// is the TabContents and the details the page_id.
	NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,

	// A content load is starting. The source will be a
	// Source<NavigationController> corresponding to the tab in which the load
	// is occurring. No details are expected for this notification.
	NOTIFICATION_LOAD_START,

	// A content load has stopped. The source will be a
	// Source<NavigationController> corresponding to the tab in which the load
	// is occurring. Details in the form of a LoadNotificationDetails object
	// are optional.
	NOTIFICATION_LOAD_STOP,

	// Content was loaded from an in-memory cache. The source will be a
	// Source<NavigationController> corresponding to the tab in which the load
	// occurred. Details in the form of a LoadFromMemoryCacheDetails object
	// are provided.
	NOTIFICATION_LOAD_FROM_MEMORY_CACHE,

	// A provisional content load has failed with an error. The source will be
	// a Source<NavigationController> corresponding to the tab in which the
	// load occurred. Details in the form of a ProvisionalLoadDetails object
	// are provided.
	NOTIFICATION_FAIL_PROVISIONAL_LOAD_WITH_ERROR,

	// A response has been received for a resource request. The source will be
	// a Source<RenderViewHostDelegate> corresponding to the tab in which the
	// request was issued. Details in the form of a ResourceRequestDetails
	// object are provided.
	NOTIFICATION_RESOURCE_RESPONSE_STARTED,

	// A redirect was received while requesting a resource. The source will be
	// a Source<RenderViewHostDelegate> corresponding to the tab in which the
	// request was issued. Details in the form of a ResourceRedirectDetails
	// are provided.
	NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,

	// A new tab is created from an existing tab to serve as a target of a
	// navigation that is about to happen. The source will be a
	// Source<BrowserContext> corresponding to the browser context in which the
	// new tab will live. Details in the form of a RetargetingDetails object are
	// provided.
	NOTIFICATION_RETARGETING,

	// A new window was requested but was not created. The source will be a
	// Source<TabContents> corresponding to the tab the request originated from.
	// Details are the ViewHostMsg_CreateWindow_Params object that were used in
	// the request.
	NOTIFICATION_CREATING_NEW_WINDOW_CANCELLED,

	// SSL ---------------------------------------------------------------------

	// Updating the SSL security indicators (the lock icon and such) proceeds
	// in two phases:
	//
	// 1) The internal SSL state for a host or tab changes. When this happens,
	// the SSLManager broadcasts an SSL_INTERNAL_STATE_CHANGED notification.
	//
	// 2) The SSLManager for each tab receives this notification and might or
	// might not update the navigation entry for its tab, depending on
	// whether the change in state affects that tab. If the SSLManager does
	// change the navigation entry, then the SSLManager broadcasts an
	// SSL_VISIBLE_STATE_CHANGED notification to the user interface can
	// redraw properly.

	// The SSL state of a page has changed in some visible way. For example,
	// if an insecure resource is loaded on a secure page. Note that a
	// toplevel load commit will also update the SSL state (since the
	// NavigationEntry is new) and this message won't always be sent in that
	// case. Listen to this notification if you need to refresh SSL-related UI
	// elements.
	//
	// There is no source or details.
	NOTIFICATION_SSL_VISIBLE_STATE_CHANGED,

	// The SSL state of the browser has changed in some internal way. For
	// example, the user might have explicitly allowed some broken certificate
	// or a secure origin might have included some insecure content. Listen to
	// this notifiation if you need to keep track of our internal SSL state.
	//
	// The source will be the browser context. The details will be the navigation
	// controller associated with the state change.
	NOTIFICATION_SSL_INTERNAL_STATE_CHANGED,

	// The user accepted or dismissed a SSL client authentication request.
	// The source is a Source<SSLClientAuthHandler>. Details is a
	// SSLClientAuthNotificationDetails which records specifies which
	// SSLCertRequestInfo the request was for and which X509Certificate was
	// selected (if any).
	NOTIFICATION_SSL_CLIENT_AUTH_CERT_SELECTED,

	#if defined(OS_MACOSX)
	// This message is sent when the application is made active (Mac OS X only
	// at present). No source or details are passed.
	NOTIFICATION_APP_ACTIVATED,
	#endif

	// This message is sent when the application is terminating (the last
	// browser window has shutdown as part of an explicit user-initiated exit,
	// or the user closed the last browser window on Windows/Linux and there are
	// no BackgroundContents keeping the browser running). No source or details
	// are passed.
	NOTIFICATION_APP_TERMINATING,

	#if defined(OS_MACOSX)
	// This notification is sent when the app has no key window, such as when
	// all windows are closed but the app is still active. No source or details
	// are provided.
	NOTIFICATION_NO_KEY_WINDOW,
	#endif

	// This is sent when the user has chosen to exit the app, but before any
	// browsers have closed. This is sent if the user chooses to exit
	// (via exit menu item or keyboard shortcut) or to restart the process
	// (such as in flags page), not if Chrome exists by some other means
	// (such as the user closing the last window). Note that receiving this
	// notification does not necessarily mean the process will exit
	// because the shutdown process can be cancelled by unload handler.
	// Use APP_TERMINATING for such needs.
	// The source and details are unspecified.
	NOTIFICATION_APP_EXITING,

	// Indicates that a devtools window is closing. The source is the
	// content::BrowserContext* and the details is the inspected RenderViewHost*.
	NOTIFICATION_DEVTOOLS_WINDOW_CLOSING,

	// Tabs --------------------------------------------------------------------

	// Sent when a tab is added to a TabContentsDelegate. The source is the
	// TabContentsDelegate and the details is the added TabContents.
	NOTIFICATION_TAB_ADDED,

	// This notification is sent after a tab has been appended to the tab_strip.
	// The source is a Source<TabContentsWrapper> of the tab being added. There
	// are no details.
	NOTIFICATION_TAB_PARENTED,

	// This message is sent before a tab has been closed. The source is a
	// Source<NavigationController> with a pointer to the controller for the
	// closed tab. No details are expected.
	//
	// See also TAB_CLOSED.
	NOTIFICATION_TAB_CLOSING,

	// Notification that a tab has been closed. The source is the
	// NavigationController with no details.
	NOTIFICATION_TAB_CLOSED,

	// This notification is sent when a render view host has connected to a
	// renderer process. The source is a Source<TabContents> with a pointer to
	// the TabContents. A TAB_CONTENTS_DISCONNECTED notification is
	// guaranteed before the source pointer becomes junk. No details are
	// expected.
	NOTIFICATION_TAB_CONTENTS_CONNECTED,

	// This notification is sent when a TabContents swaps its render view host
	// with another one, possibly changing processes. The source is a
	// Source<TabContents> with a pointer to the TabContents. A
	// TAB_CONTENTS_DISCONNECTED notification is guaranteed before the
	// source pointer becomes junk. No details are expected.
	NOTIFICATION_TAB_CONTENTS_SWAPPED,

	// This message is sent after a TabContents is disconnected from the
	// renderer process. The source is a Source<TabContents> with a pointer to
	// the TabContents (the pointer is usable). No details are expected.
	NOTIFICATION_TAB_CONTENTS_DISCONNECTED,

	// This notification is sent after TabContents' title is updated. The source
	// is a Source<TabContents> with a pointer to the TabContents. The details
	// is a Details<TitleUpdatedDetails> that contains more information.
	NOTIFICATION_TAB_CONTENTS_TITLE_UPDATED,

	// This notification is sent when a TabContents is being hidden, e.g. due
	// to switching away from this tab. The source is a Source<TabContents>.
	NOTIFICATION_TAB_CONTENTS_HIDDEN,

	// This notification is sent when a TabContents is being destroyed. Any
	// object holding a reference to a TabContents can listen to that
	// notification to properly reset the reference. The source is a
	// Source<TabContents>.
	NOTIFICATION_TAB_CONTENTS_DESTROYED,

	// A RenderViewHost was created for a TabContents. The source is the
	// associated TabContents, and the details is the RenderViewHost
	// pointer.
	NOTIFICATION_RENDER_VIEW_HOST_CREATED_FOR_TAB,

	// Notification than an interstitial has become associated with a tab. The
	// source is the TabContents, the details not used.
	NOTIFICATION_INTERSTITIAL_ATTACHED,

	// Indicates that a RenderProcessHost was created and its handle is now
	// available. The source will be the RenderProcessHost that corresponds to
	// the process.
	NOTIFICATION_RENDERER_PROCESS_CREATED,

	// Indicates that a RenderProcessHost is destructing. The source will be the
	// RenderProcessHost that corresponds to the process.
	NOTIFICATION_RENDERER_PROCESS_TERMINATED,

	// Indicates that a render process is starting to exit, such that it should
	// not be used for future navigations. The source will be the
	// RenderProcessHost that corresponds to the process.
	NOTIFICATION_RENDERER_PROCESS_CLOSING,

	// Indicates that a render process was closed (meaning it exited, but the
	// RenderProcessHost might be reused). The source will be the corresponding
	// RenderProcessHost. The details will be a RendererClosedDetails struct.
	// This may get sent along with RENDERER_PROCESS_TERMINATED.
	NOTIFICATION_RENDERER_PROCESS_CLOSED,

	// Indicates that a render process has become unresponsive for a period of
	// time. The source will be the RenderWidgetHost that corresponds to the
	// hung view, and no details are expected.
	NOTIFICATION_RENDERER_PROCESS_HANG,

	// This is sent to notify that the RenderViewHost displayed in a
	// TabContents has changed. Source is the TabContents for which the change
	// happened, details is the previous RenderViewHost (can be NULL when the
	// first RenderViewHost is set).
	NOTIFICATION_RENDER_VIEW_HOST_CHANGED,

	// Indicates that the render view host has received an accessibility tree
	// update, either partial or full, from the render view. The source is the
	// RenderViewHost, the details are not used.
	NOTIFICATION_RENDER_VIEW_HOST_ACCESSIBILITY_TREE_UPDATED,

	// This is sent when a RenderWidgetHost is being destroyed. The source is
	// the RenderWidgetHost, the details are not used.
	NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,

	// Sent after the widget has painted. The source is the RenderWidgetHost,
	// the details are not used.
	NOTIFICATION_RENDER_WIDGET_HOST_DID_PAINT,

	// This notifies the observer that a PaintAtSizeACK was received. The source
	// is the RenderWidgetHost, the details are an instance of
	// RenderWidgetHost::PaintAtSizeAckDetails.
	NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_PAINT_AT_SIZE_ACK,

	// This notifies the observer that a HandleInputEventACK was received. The
	// source is the RenderWidgetHost, the details are the type of event
	// received.
	// Note: The RenderWidgetHost may be deallocated at this point.
	// Used only in testing.
	NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_INPUT_EVENT_ACK,

	// Sent from RenderViewHost constructor. The source is the RenderViewHost,
	// the details unused.
	NOTIFICATION_RENDER_VIEW_HOST_CREATED,

	// Sent from ~RenderViewHost. The source is the RenderViewHost, the details
	// unused.
	NOTIFICATION_RENDER_VIEW_HOST_DELETED,

	// Sent from RenderViewHost::ClosePage. The hosted RenderView has
	// processed the onbeforeunload handler and is about to be sent a
	// ViewMsg_ClosePage message to complete the tear-down process. The source
	// is the RenderViewHost sending the message, and no details are provided.
	// Note: This message is not sent in response to RenderView closure
	// initiated by window.close().
	NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW,

	// This notifies the observer that the drag operation ack in a drag and
	// drop operation was received. The source is the RenderViewHost.
	// Note: Used only in testing.
	NOTIFICATION_RENDER_VIEW_HOST_DID_RECEIVE_DRAG_TARGET_DROP_ACK,

	// Indicates a RenderWidgetHost has been hidden or restored. The source is
	// the RWH whose visibility changed, the details is a bool set to true if
	// the new state is "visible."
	NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED,

	// Sent from ~SiteInstance. The source is the SiteInstance, and the details
	// are unused.
	NOTIFICATION_SITE_INSTANCE_DELETED,

	// The focused element inside a page has changed. The source is the
	// TabContents containing the render view host for the page. The details is
	// a Details<const bool> that indicates whether or not an editable node was
	// focused.
	NOTIFICATION_FOCUS_CHANGED_IN_PAGE,

	// Notification posted from ExecuteJavascriptInWebFrameNotifyResult. The
	// source is the RenderViewHost ExecuteJavascriptInWebFrameNotifyResult was
	// invoked on. The details are a std::pair<int, Value*> with the int giving
	// the id returned from ExecuteJavascriptInWebFrameNotifyResult and the
	// Value the results of the javascript expression. The Value is owned by
	// RenderViewHost and may be a Null Value.
	NOTIFICATION_EXECUTE_JAVASCRIPT_RESULT,

	// Child Processes ---------------------------------------------------------

	// This notification is sent when a child process host has connected to a
	// child process. There is no usable source, since it is sent from an
	// ephemeral task; register for AllSources() to receive this notification.
	// The details are in a Details<ChildProcessInfo>.
	NOTIFICATION_CHILD_PROCESS_HOST_CONNECTED,

	// This message is sent after a ChildProcessHost is disconnected from the
	// child process. There is no usable source, since it is sent from an
	// ephemeral task; register for AllSources() to receive this notification.
	// The details are in a Details<ChildProcessInfo>.
	NOTIFICATION_CHILD_PROCESS_HOST_DISCONNECTED,

	// This message is sent when a child process disappears
	// unexpectedly as a result of a crash. There is no usable
	// source, since it is sent from an ephemeral task; register for
	// AllSources() to receive this notification. The details are in
	// a Details<ChildProcessInfo>.
	NOTIFICATION_CHILD_PROCESS_CRASHED,

	// This message is sent when a child process disappears
	// unexpectedly as a result of a termination signal. There is no
	// usable source, since it is sent from an ephemeral task;
	// register for AllSources() to receive this notification. The
	// details are in a Details<ChildProcessInfo>.
	NOTIFICATION_CHILD_PROCESS_WAS_KILLED,

	// This message indicates that an instance of a particular child was
	// created in a page. (If one page contains several regions rendered by
	// the same child, this notification will occur once for each region
	// during the page load.)
	//
	// There is no usable source, since it is sent from an ephemeral task;
	// register for AllSources() to receive this notification. The details are
	// in a Details<ChildProcessInfo>.
	NOTIFICATION_CHILD_INSTANCE_CREATED,

	// Sent by the PluginUpdater when there is a change of plugin
	// enable/disable status.
	NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED,

	// Download Notifications --------------------------------------------------

	// Sent when a page generation to MHTML has finished.
	// The source is the corresponding RenderViewHost. The details is a
	// MHTMLGenerationManager::NotificationDetails.
	NOTIFICATION_MHTML_GENERATED,

	// Saved Pages -------------------------------------------------------------

	// Sent when a SavePackage finishes successfully. The source is the
	// SavePackage, and Details are a GURL containing address of downloaded
	// page.
	NOTIFICATION_SAVE_PACKAGE_SUCCESSFULLY_FINISHED,

	// Purge Memory ------------------------------------------------------------

	// Sent on the IO thread when the system should try to reduce the amount of
	// memory in use, no source or details are passed. See memory_purger.h .cc.
	NOTIFICATION_PURGE_MEMORY,

	// Sent before the repost form warning is brought up.
	// The source is a NavigationController.
	NOTIFICATION_REPOST_WARNING_SHOWN,

	// Sent when the zoom level changes. The source is the HostZoomMap. The
	// details is a string of the hostname for which the zoom changed. In case
	// of a temporary zoom level change, the details is an empty string.
	NOTIFICATION_ZOOM_LEVEL_CHANGED,

	// Custom notifications used by the embedder should start from here.
	NOTIFICATION_CONTENT_END,
	};

	} // namespace content

	#endif // CONTENT_COMMON_NOTIFICATION_TYPE_H_