accessible/base/Logging.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_a11y_logs_h__
   8 #define mozilla_a11y_logs_h__
   9
  10 #include "nscore.h"
  11 #include "nsStringFwd.h"
  12 #include "mozilla/Attributes.h"
  13
  14 class nsINode;
  15 class nsIRequest;
  16 class nsISupports;
  17 class nsIWebProgress;
  18
  19 namespace mozilla {
  20
  21 namespace dom {
  22 class Document;
  23 class Selection;
  24 }  // namespace dom
  25
  26 namespace a11y {
  27
  28 class AccEvent;
  29 class LocalAccessible;
  30 class DocAccessible;
  31 class OuterDocAccessible;
  32
  33 namespace logging {
  34
  35 enum EModules {
  36   eDocLoad = 1 << 0,
  37   eDocCreate = 1 << 1,
  38   eDocDestroy = 1 << 2,
  39   eDocLifeCycle = eDocLoad | eDocCreate | eDocDestroy,
  40
  41   eEvents = 1 << 3,
  42   eEventTree = 1 << 4,
  43   ePlatforms = 1 << 5,
  44   eText = 1 << 6,
  45   eTree = 1 << 7,
  46   eTreeSize = 1 << 8,
  47
  48   eDOMEvents = 1 << 9,
  49   eFocus = 1 << 10,
  50   eSelection = 1 << 11,
  51   eNotifications = eDOMEvents | eSelection | eFocus,
  52
  53   // extras
  54   eStack = 1 << 12,
  55   eVerbose = 1 << 13
  56 };
  57
  58 /**
  59  * Return true if any of the given modules is logged.
  60  */
  61 bool IsEnabled(uint32_t aModules);
  62
  63 /**
  64  * Return true if all of the given modules are logged.
  65  */
  66 bool IsEnabledAll(uint32_t aModules);
  67
  68 /**
  69  * Return true if the given module is logged.
  70  */
  71 bool IsEnabled(const nsAString& aModules);
  72
  73 /**
  74  * Log the document loading progress.
  75  */
  76 void DocLoad(const char* aMsg, nsIWebProgress* aWebProgress,
  77              nsIRequest* aRequest, uint32_t aStateFlags);
  78 void DocLoad(const char* aMsg, dom::Document* aDocumentNode);
  79 void DocCompleteLoad(DocAccessible* aDocument, bool aIsLoadEventTarget);
  80
  81 /**
  82  * Log that document load event was fired.
  83  */
  84 void DocLoadEventFired(AccEvent* aEvent);
  85
  86 /**
  87  * Log that document laod event was handled.
  88  */
  89 void DocLoadEventHandled(AccEvent* aEvent);
  90
  91 /**
  92  * Log the document was created.
  93  */
  94 void DocCreate(const char* aMsg, dom::Document* aDocumentNode,
  95                DocAccessible* aDocument = nullptr);
  96
  97 /**
  98  * Log the document was destroyed.
  99  */
 100 void DocDestroy(const char* aMsg, dom::Document* aDocumentNode,
 101                 DocAccessible* aDocument = nullptr);
 102
 103 /**
 104  * Log the outer document was destroyed.
 105  */
 106 void OuterDocDestroy(OuterDocAccessible* OuterDoc);
 107
 108 /**
 109  * Log the focus notification target.
 110  */
 111 void FocusNotificationTarget(const char* aMsg, const char* aTargetDescr,
 112                              LocalAccessible* aTarget);
 113 void FocusNotificationTarget(const char* aMsg, const char* aTargetDescr,
 114                              nsINode* aTargetNode);
 115 void FocusNotificationTarget(const char* aMsg, const char* aTargetDescr,
 116                              nsISupports* aTargetThing);
 117
 118 /**
 119  * Log a cause of active item descendant change (submessage).
 120  */
 121 void ActiveItemChangeCausedBy(const char* aMsg, LocalAccessible* aTarget);
 122
 123 /**
 124  * Log the active widget (submessage).
 125  */
 126 void ActiveWidget(LocalAccessible* aWidget);
 127
 128 /**
 129  * Log the focus event was dispatched (submessage).
 130  */
 131 void FocusDispatched(LocalAccessible* aTarget);
 132
 133 /**
 134  * Log the selection change.
 135  */
 136 void SelChange(dom::Selection* aSelection, DocAccessible* aDocument,
 137                int16_t aReason);
 138
 139 /**
 140  * Log the given accessible elements info.
 141  */
 142 void TreeInfo(const char* aMsg, uint32_t aExtraFlags, ...);
 143 void TreeInfo(const char* aMsg, uint32_t aExtraFlags, const char* aMsg1,
 144               LocalAccessible* aAcc, const char* aMsg2, nsINode* aNode);
 145 void TreeInfo(const char* aMsg, uint32_t aExtraFlags, LocalAccessible* aParent);
 146
 147 /**
 148  * Log the accessible/DOM tree.
 149  */
 150 typedef const char* (*GetTreePrefix)(void* aData, LocalAccessible*);
 151 void Tree(const char* aTitle, const char* aMsgText, LocalAccessible* aRoot,
 152           GetTreePrefix aPrefixFunc = nullptr,
 153           void* aGetTreePrefixData = nullptr);
 154 void DOMTree(const char* aTitle, const char* aMsgText, DocAccessible* aDoc);
 155
 156 /**
 157  * Log the tree size in bytes.
 158  */
 159 void TreeSize(const char* aTitle, const char* aMsgText, LocalAccessible* aRoot);
 160
 161 /**
 162  * Log the message ('title: text' format) on new line. Print the start and end
 163  * boundaries of the message body designated by '{' and '}' (2 spaces indent for
 164  * body).
 165  */
 166 void MsgBegin(const char* aTitle, const char* aMsgText, ...)
 167     MOZ_FORMAT_PRINTF(2, 3);
 168 void MsgEnd();
 169
 170 /**
 171  * Print start and end boundaries of the message body designated by '{' and '}'
 172  * (2 spaces indent for body).
 173  */
 174 void SubMsgBegin();
 175 void SubMsgEnd();
 176
 177 /**
 178  * Log the entry into message body (4 spaces indent).
 179  */
 180 void MsgEntry(const char* aEntryText, ...) MOZ_FORMAT_PRINTF(1, 2);
 181
 182 /**
 183  * Log the text, two spaces offset is used.
 184  */
 185 void Text(const char* aText);
 186
 187 /**
 188  * Log the accessible object address as message entry (4 spaces indent).
 189  */
 190 void Address(const char* aDescr, LocalAccessible* aAcc);
 191
 192 /**
 193  * Log the DOM node info as message entry.
 194  */
 195 void Node(const char* aDescr, nsINode* aNode);
 196
 197 /**
 198  * Log the document accessible info as message entry.
 199  */
 200 void Document(DocAccessible* aDocument);
 201
 202 /**
 203  * Log the accessible and its DOM node as a message entry.
 204  */
 205 void AccessibleInfo(const char* aDescr, LocalAccessible* aAccessible);
 206 void AccessibleNNode(const char* aDescr, LocalAccessible* aAccessible);
 207 void AccessibleNNode(const char* aDescr, nsINode* aNode);
 208
 209 /**
 210  * Log the DOM event.
 211  */
 212 void DOMEvent(const char* aDescr, nsINode* aOrigTarget,
 213               const nsAString& aEventType);
 214
 215 /**
 216  * Log the call stack, two spaces offset is used.
 217  */
 218 void Stack();
 219
 220 /**
 221  * Enable logging of the specified modules, all other modules aren't logged.
 222  */
 223 void Enable(const nsCString& aModules);
 224
 225 /**
 226  * Enable logging of modules specified by A11YLOG environment variable,
 227  * all other modules aren't logged.
 228  */
 229 void CheckEnv();
 230
 231 }  // namespace logging
 232
 233 }  // namespace a11y
 234 }  // namespace mozilla
 235
 236 #endif