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 NOTIFICATION_NAV_ENTRY_COMMITTED, 46 47 // Indicates that the NavigationController given in the Source has 48 // decreased its back/forward list count by removing entries from either 49 // the front or back of its list. This is usually the result of going back 50 // and then doing a new navigation, meaning all the "forward" items are 51 // deleted. 52 // 53 // This normally happens as a result of a new navigation. It will be 54 // followed by a NAV_ENTRY_COMMITTED message for the new page that 55 // caused the pruning. It could also be a result of removing an item from 56 // the list to fix up after interstitials. 57 // 58 // The details are NavigationController::PrunedDetails. 59 NOTIFICATION_NAV_LIST_PRUNED, 60 61 // Indicates that a NavigationEntry has changed. The source will be the 62 // NavigationController that owns the NavigationEntry. The details will be 63 // a NavigationController::EntryChangedDetails struct. 64 // 65 // This will NOT be sent on navigation, interested parties should also 66 // listen for NAV_ENTRY_COMMITTED to handle that case. This will be 67 // sent when the entry is updated outside of navigation (like when a new 68 // title comes). 69 NOTIFICATION_NAV_ENTRY_CHANGED, 70 71 // Other load-related (not from NavigationController) ---------------------- 72 73 // Corresponds to ViewHostMsg_DocumentOnLoadCompletedInMainFrame. The source 74 // is the WebContents and the details the page_id. 75 NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME, 76 77 // A content load is starting. The source will be a 78 // Source<NavigationController> corresponding to the tab in which the load 79 // is occurring. No details are expected for this notification. 80 NOTIFICATION_LOAD_START, 81 82 // A content load has stopped. The source will be a 83 // Source<NavigationController> corresponding to the tab in which the load 84 // is occurring. Details in the form of a LoadNotificationDetails object 85 // are optional. 86 NOTIFICATION_LOAD_STOP, 87 88 // Content was loaded from an in-memory cache. The source will be a 89 // Source<NavigationController> corresponding to the tab in which the load 90 // occurred. Details in the form of a LoadFromMemoryCacheDetails object 91 // are provided. 92 NOTIFICATION_LOAD_FROM_MEMORY_CACHE, 93 94 // A response has been received for a resource request. The source will be 95 // a Source<WebContents> corresponding to the tab in which the request was 96 // issued. Details in the form of a ResourceRequestDetails object are 97 // provided. 98 NOTIFICATION_RESOURCE_RESPONSE_STARTED, 99 100 // A redirect was received while requesting a resource. The source will be 101 // a Source<WebContents> corresponding to the tab in which the request was 102 // issued. Details in the form of a ResourceRedirectDetails are provided. 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 NOTIFICATION_WEB_CONTENTS_CONNECTED, 113 114 // This notification is sent when a WebContents swaps its render view host 115 // with another one, possibly changing processes. The source is a 116 // Source<WebContents> with a pointer to the WebContents. A 117 // NOTIFICATION_WEB_CONTENTS_DISCONNECTED notification is guaranteed before 118 // the source pointer becomes junk. Details are the RenderViewHost that 119 // has been replaced, or NULL if the old RVH was shut down. 120 NOTIFICATION_WEB_CONTENTS_SWAPPED, 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 NOTIFICATION_WEB_CONTENTS_DISCONNECTED, 126 127 // This notification is sent after WebContents' title is updated. The source 128 // is a Source<WebContents> with a pointer to the WebContents. The details 129 // is a std::pair<NavigationEntry*, bool> that contains more information. 130 NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED, 131 132 // Indicates a WebContents has been hidden or restored. The source is 133 // a Source<WebContents>. The details is a bool set to true if the new 134 // state is visible. 135 NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED, 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 NOTIFICATION_WEB_CONTENTS_DESTROYED, 142 143 // A RenderViewHost was created for a WebContents. The source is the 144 // associated WebContents, and the details is the RenderViewHost 145 // pointer. 146 NOTIFICATION_WEB_CONTENTS_RENDER_VIEW_HOST_CREATED, 147 148 // Indicates that a RenderProcessHost was created and its handle is now 149 // available. The source will be the RenderProcessHost that corresponds to 150 // the process. 151 NOTIFICATION_RENDERER_PROCESS_CREATED, 152 153 // Indicates that a RenderProcessHost is destructing. The source will be the 154 // RenderProcessHost that corresponds to the process. 155 NOTIFICATION_RENDERER_PROCESS_TERMINATED, 156 157 // Indicates that a render process is starting to exit, such that it should 158 // not be used for future navigations. The source will be the 159 // RenderProcessHost that corresponds to the process. 160 NOTIFICATION_RENDERER_PROCESS_CLOSING, 161 162 // Indicates that a render process was closed (meaning it exited, but the 163 // RenderProcessHost might be reused). The source will be the corresponding 164 // RenderProcessHost. The details will be a RendererClosedDetails struct. 165 // This may get sent along with RENDERER_PROCESS_TERMINATED. 166 NOTIFICATION_RENDERER_PROCESS_CLOSED, 167 168 // Indicates that a render process has become unresponsive for a period of 169 // time. The source will be the RenderWidgetHost that corresponds to the 170 // hung view, and no details are expected. 171 NOTIFICATION_RENDERER_PROCESS_HANG, 172 173 // This is sent to notify that the RenderViewHost displayed in a WebContents 174 // has changed. Source is the NavigationController for which the change 175 // happened, details is a 176 // std::pair::<old RenderViewHost, new RenderViewHost>). 177 NOTIFICATION_RENDER_VIEW_HOST_CHANGED, 178 179 // This is sent when a RenderWidgetHost is being destroyed. The source is 180 // the RenderWidgetHost, the details are not used. 181 NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED, 182 183 // Sent after the backing store has been updated but before the widget has 184 // painted. The source is the RenderWidgetHost, the details are not used. 185 NOTIFICATION_RENDER_WIDGET_HOST_DID_UPDATE_BACKING_STORE, 186 187 // This notifies the observer that a PaintAtSizeACK was received. The source 188 // is the RenderWidgetHost, the details are an instance of 189 // std::pair<int, gfx::Size>. 190 NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_PAINT_AT_SIZE_ACK, 191 192 // This notifies the observer that a HandleInputEventACK was received. The 193 // source is the RenderWidgetHost, the details are the type of event 194 // received. 195 // Note: The RenderWidgetHost may be deallocated at this point. 196 // Used only in testing. 197 NOTIFICATION_RENDER_WIDGET_HOST_DID_RECEIVE_INPUT_EVENT_ACK, 198 199 // Sent from RenderViewHost::ClosePage. The hosted RenderView has 200 // processed the onbeforeunload handler and is about to be sent a 201 // ViewMsg_ClosePage message to complete the tear-down process. The source 202 // is the RenderViewHost sending the message, and no details are provided. 203 // Note: This message is not sent in response to RenderView closure 204 // initiated by window.close(). 205 NOTIFICATION_RENDER_VIEW_HOST_WILL_CLOSE_RENDER_VIEW, 206 207 // This notifies the observer that the drag operation ack in a drag and 208 // drop operation was received. The source is the RenderViewHost. 209 // Note: Used only in testing. 210 NOTIFICATION_RENDER_VIEW_HOST_DID_RECEIVE_DRAG_TARGET_DROP_ACK, 211 212 // Indicates a RenderWidgetHost has been hidden or restored. The source is 213 // the RWH whose visibility changed, the details is a bool set to true if 214 // the new state is "visible." 215 NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED, 216 217 // The focused element inside a page has changed. The source is the 218 // RenderViewHost. The details is a Details<const bool> that indicates whether 219 // or not an editable node was focused. 220 NOTIFICATION_FOCUS_CHANGED_IN_PAGE, 221 222 // Notification from WebContents that we have received a response from the 223 // renderer in response to a dom automation controller action. The source is 224 // the RenderViewHost, and the details is a DomOperationNotificationDetails. 225 NOTIFICATION_DOM_OPERATION_RESPONSE, 226 227 // Custom notifications used by the embedder should start from here. 228 NOTIFICATION_CONTENT_END, 229 }; 230 231 } // namespace content 232 233 #endif // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_ 234
