content/public/browser/notification_types.h

   1 // Copyright (c) 2012 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_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
   6 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
   7
   8 // This file describes various types used to describe and filter notifications
   9 // that pass through the NotificationService.
  10 //
  11 // Only notifications that are fired from the content module should be here. We
  12 // should never have a notification that is fired by the embedder and listened
  13 // to by content.
  14 namespace content {
  15
  16 enum NotificationType {
  17   NOTIFICATION_CONTENT_START = 0,
  18
  19   // General -----------------------------------------------------------------
  20
  21   // Special signal value to represent an interest in all notifications.
  22   // Not valid when posting a notification.
  23   NOTIFICATION_ALL = NOTIFICATION_CONTENT_START,
  24
  25   // NavigationController ----------------------------------------------------
  26
  27   // A new pending navigation has been created. Pending entries are created
  28   // when the user requests the navigation. We don't know if it will actually
  29   // happen until it does (at this point, it will be "committed." Note that
  30   // renderer- initiated navigations such as link clicks will never be
  31   // pending.
  32   //
  33   // This notification is called after the pending entry is created, but
  34   // before we actually try to navigate. The source will be the
  35   // NavigationController that owns the pending entry, and the details
  36   // will be a NavigationEntry.
  37   NOTIFICATION_NAV_ENTRY_PENDING,
  38
  39   // A new non-pending navigation entry has been created. This will
  40   // correspond to one NavigationController entry being created (in the case
  41   // of new navigations) or renavigated to (for back/forward navigations).
  42   //
  43   // The source will be the navigation controller doing the commit. The
  44   // details will be NavigationController::LoadCommittedDetails.
  45   // DEPRECATED: Use WebContentsObserver::NavigationEntryCommitted()
  46   NOTIFICATION_NAV_ENTRY_COMMITTED,
  47
  48   // Indicates that the NavigationController given in the Source has
  49   // decreased its back/forward list count by removing entries from either
  50   // the front or back of its list. This is usually the result of going back
  51   // and then doing a new navigation, meaning all the "forward" items are
  52   // deleted.
  53   //
  54   // This normally happens as a result of a new navigation. It will be
  55   // followed by a NAV_ENTRY_COMMITTED message for the new page that
  56   // caused the pruning. It could also be a result of removing an item from
  57   // the list to fix up after interstitials.
  58   //
  59   // The details are NavigationController::PrunedDetails.
  60   NOTIFICATION_NAV_LIST_PRUNED,
  61
  62   // Indicates that a NavigationEntry has changed. The source will be the
  63   // NavigationController that owns the NavigationEntry. The details will be
  64   // a NavigationController::EntryChangedDetails struct.
  65   //
  66   // This will NOT be sent on navigation, interested parties should also
  67   // listen for NAV_ENTRY_COMMITTED to handle that case. This will be
  68   // sent when the entry is updated outside of navigation (like when a new
  69   // title comes).
  70   NOTIFICATION_NAV_ENTRY_CHANGED,
  71
  72   // Other load-related (not from NavigationController) ----------------------
  73
  74   // Corresponds to ViewHostMsg_DocumentOnLoadCompletedInMainFrame. The source
  75   // is the WebContents.
  76   // DEPRECATED: Use WebContentsObserver::DocumentOnLoadCompletedInMainFrame()
  77   NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
  78
  79   // A content load is starting.  The source will be a
  80   // Source<NavigationController> corresponding to the tab in which the load
  81   // is occurring.  No details are expected for this notification.
  82   // DEPRECATED: Use WebContentsObserver::DidStartLoading()
  83   NOTIFICATION_LOAD_START,
  84
  85   // A content load has stopped. The source will be a
  86   // Source<NavigationController> corresponding to the tab in which the load
  87   // is occurring.  Details in the form of a LoadNotificationDetails object
  88   // are optional.
  89   // DEPRECATED: Use WebContentsObserver::DidStopLoading()
  90   NOTIFICATION_LOAD_STOP,
  91
  92   // A response has been received for a resource request.  The source will be
  93   // a Source<WebContents> corresponding to the tab in which the request was
  94   // issued.  Details in the form of a ResourceRequestDetails object are
  95   // provided.
  96   // DEPRECATED: Use WebContentsObserver::DidGetResourceResponseStart()
  97   NOTIFICATION_RESOURCE_RESPONSE_STARTED,
  98
  99   // A redirect was received while requesting a resource.  The source will be
 100   // a Source<WebContents> corresponding to the tab in which the request was
 101   // issued.  Details in the form of a ResourceRedirectDetails are provided.
 102   // DEPRECATED: Use WebContentsObserver::DidGetRedirectForResourceRequest()
 103   NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
 104
 105   // WebContents ---------------------------------------------------------------
 106
 107   // This notification is sent when a render view host has connected to a
 108   // renderer process. The source is a Source<WebContents> with a pointer to
 109   // the WebContents.  A WEB_CONTENTS_DISCONNECTED notification is
 110   // guaranteed before the source pointer becomes junk.  No details are
 111   // expected.
 112   // DEPRECATED: Use WebContentsObserver::RenderViewReady()
 113   NOTIFICATION_WEB_CONTENTS_CONNECTED,
 114
 115   // This notification is sent when a WebContents swaps its render view host
 116   // with another one, possibly changing processes. The source is a
 117   // Source<WebContents> with a pointer to the WebContents, details is a
 118   // std::pair::<old RenderViewHost, new RenderViewHost>.
 119   // DEPRECATED: Use WebContentsObserver::RenderViewHostChanged()
 120   NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
 121
 122   // This message is sent after a WebContents is disconnected from the
 123   // renderer process.  The source is a Source<WebContents> with a pointer to
 124   // the WebContents (the pointer is usable).  No details are expected.
 125   // DEPRECATED: This is fired in two situations: when the render process
 126   // crashes, in which case use WebContentsObserver::RenderProcessGone, and when
 127   // the WebContents is being torn down, in which case use
 128   // WebContentsObserver::WebContentsDestroyed()
 129   NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
 130
 131   // This notification is sent after WebContents' title is updated. The source
 132   // is a Source<WebContents> with a pointer to the WebContents. The details
 133   // is a std::pair<NavigationEntry*, bool> that contains more information.
 134   // DEPRECATED: Use WebContentsObserver::TitleWasSet()
 135   NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED,
 136
 137   // This notification is sent when a WebContents is being destroyed. Any
 138   // object holding a reference to a WebContents can listen to that
 139   // notification to properly reset the reference. The source is a
 140   // Source<WebContents>.
 141   // DEPRECATED: Use WebContentsObserver::WebContentsDestroyed()
 142   NOTIFICATION_WEB_CONTENTS_DESTROYED,
 143
 144   // A RenderViewHost was created for a WebContents. The source is the
 145   // associated WebContents, and the details is the RenderViewHost
 146   // pointer.
 147   NOTIFICATION_WEB_CONTENTS_RENDER_VIEW_HOST_CREATED,
 148
 149   // Indicates that a RenderProcessHost was created and its handle is now
 150   // available. The source will be the RenderProcessHost that corresponds to
 151   // the process.
 152   NOTIFICATION_RENDERER_PROCESS_CREATED,
 153
 154   // Indicates that a RenderProcessHost is destructing. The source will be the
 155   // RenderProcessHost that corresponds to the process.
 156   NOTIFICATION_RENDERER_PROCESS_TERMINATED,
 157
 158   // Indicates that a render process is starting to exit, such that it should
 159   // not be used for future navigations.  The source will be the
 160   // RenderProcessHost that corresponds to the process.
 161   NOTIFICATION_RENDERER_PROCESS_CLOSING,
 162
 163   // Indicates that a render process was closed (meaning it exited, but the
 164   // RenderProcessHost might be reused).  The source will be the corresponding
 165   // RenderProcessHost.  The details will be a RendererClosedDetails struct.
 166   // This may get sent along with RENDERER_PROCESS_TERMINATED.
 167   NOTIFICATION_RENDERER_PROCESS_CLOSED,
 168
 169   // Indicates that a RenderWidgetHost has become unresponsive for a period of
 170   // time. The source will be the RenderWidgetHost that corresponds to the
 171   // hung view, and no details are expected.
 172   NOTIFICATION_RENDER_WIDGET_HOST_HANG,
 173
 174   // This is sent when a RenderWidgetHost is being destroyed. The source is
 175   // the RenderWidgetHost, the details are not used.
 176   NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
 177
 178   // Sent after the backing store has been updated but before the widget has
 179   // painted. The source is the RenderWidgetHost, the details are not used.
 180   NOTIFICATION_RENDER_WIDGET_HOST_DID_UPDATE_BACKING_STORE,
 181
 182   // This notifies the observer that a HandleInputEventACK was received. The
 183   // source is the RenderWidgetHost, the details are the type of event
 184   // received.
 185   // Note: The RenderWidgetHost may be deallocated at this point.
 186   // Used only in testing.
 187   NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_INPUT_EVENT_ACK,
 188
 189   // Sent from RenderViewHost::ClosePage.  The hosted RenderView has
 190   // processed the onbeforeunload handler and is about to be sent a
 191   // ViewMsg_ClosePage message to complete the tear-down process.  The source
 192   // is the RenderViewHost sending the message, and no details are provided.
 193   // Note:  This message is not sent in response to RenderView closure
 194   // initiated by window.close().
 195   NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW,
 196
 197   // This notifies the observer that the drag operation ack in a drag and
 198   // drop operation was received. The source is the RenderViewHost.
 199   // Note: Used only in testing.
 200   NOTIFICATION_RENDER_VIEW_HOST_DID_RECEIVE_DRAG_TARGET_DROP_ACK,
 201
 202   // Indicates a RenderWidgetHost has been hidden or restored. The source is
 203   // the RWH whose visibility changed, the details is a bool set to true if
 204   // the new state is "visible."
 205   NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED,
 206
 207   // The focused element inside a page has changed.  The source is the
 208   // RenderViewHost. The details is a Details<const bool> that indicates whether
 209   // or not an editable node was focused.
 210   NOTIFICATION_FOCUS_CHANGED_IN_PAGE,
 211
 212   // Notification from WebContents that we have received a response from the
 213   // renderer in response to a dom automation controller action. The source is
 214   // the RenderViewHost, and the details is a DomOperationNotificationDetails.
 215   NOTIFICATION_DOM_OPERATION_RESPONSE,
 216
 217   // Custom notifications used by the embedder should start from here.
 218   NOTIFICATION_CONTENT_END,
 219 };
 220
 221 }  // namespace content
 222
 223 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_