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C++ AccessibleWrap::RootAccessible方法代码示例

本文整理汇总了C++中AccessibleWrap::RootAccessible方法的典型用法代码示例。如果您正苦于以下问题:C++ AccessibleWrap::RootAccessible方法的具体用法?C++ AccessibleWrap::RootAccessible怎么用?C++ AccessibleWrap::RootAccessible使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在AccessibleWrap的用法示例。


在下文中一共展示了AccessibleWrap::RootAccessible方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: FireAtkStateChangeEvent

nsresult
AccessibleWrap::FirePlatformEvent(AccEvent* aEvent)
{
    Accessible* accessible = aEvent->GetAccessible();
    NS_ENSURE_TRUE(accessible, NS_ERROR_FAILURE);

    PRUint32 type = aEvent->GetEventType();

    AtkObject* atkObj = AccessibleWrap::GetAtkObject(accessible);

    // We don't create ATK objects for nsIAccessible plain text leaves,
    // just return NS_OK in such case
    if (!atkObj) {
        NS_ASSERTION(type == nsIAccessibleEvent::EVENT_SHOW ||
                     type == nsIAccessibleEvent::EVENT_HIDE,
                     "Event other than SHOW and HIDE fired for plain text leaves");
        return NS_OK;
    }

    AccessibleWrap* accWrap = GetAccessibleWrap(atkObj);
    if (!accWrap) {
        return NS_OK; // Node is shut down
    }

    switch (type) {
    case nsIAccessibleEvent::EVENT_STATE_CHANGE:
        return FireAtkStateChangeEvent(aEvent, atkObj);

    case nsIAccessibleEvent::EVENT_TEXT_REMOVED:
    case nsIAccessibleEvent::EVENT_TEXT_INSERTED:
        return FireAtkTextChangedEvent(aEvent, atkObj);

    case nsIAccessibleEvent::EVENT_FOCUS:
      {
        MAI_LOG_DEBUG(("\n\nReceived: EVENT_FOCUS\n"));
        a11y::RootAccessible* rootAccWrap = accWrap->RootAccessible();
        if (rootAccWrap && rootAccWrap->mActivated) {
            atk_focus_tracker_notify(atkObj);
            // Fire state change event for focus
            nsRefPtr<AccEvent> stateChangeEvent =
              new AccStateChangeEvent(accessible, states::FOCUSED, true);
            return FireAtkStateChangeEvent(stateChangeEvent, atkObj);
        }
      } break;

    case nsIAccessibleEvent::EVENT_NAME_CHANGE:
      {
        nsAutoString newName;
        accessible->Name(newName);
        NS_ConvertUTF16toUTF8 utf8Name(newName);
        if (!atkObj->name || !utf8Name.Equals(atkObj->name))
          atk_object_set_name(atkObj, utf8Name.get());

        break;
      }
    case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
      {
        MAI_LOG_DEBUG(("\n\nReceived: EVENT_VALUE_CHANGE\n"));
        nsCOMPtr<nsIAccessibleValue> value(do_QueryObject(accessible));
        if (value) {    // Make sure this is a numeric value
            // Don't fire for MSAA string value changes (e.g. text editing)
            // ATK values are always numeric
            g_object_notify( (GObject*)atkObj, "accessible-value" );
        }
      } break;

    case nsIAccessibleEvent::EVENT_SELECTION:
    case nsIAccessibleEvent::EVENT_SELECTION_ADD:
    case nsIAccessibleEvent::EVENT_SELECTION_REMOVE:
    {
      // XXX: dupe events may be fired
      MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
      AccSelChangeEvent* selChangeEvent = downcast_accEvent(aEvent);
      g_signal_emit_by_name(AccessibleWrap::GetAtkObject(selChangeEvent->Widget()),
                            "selection_changed");
      break;
    }

    case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
    {
      MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
      g_signal_emit_by_name(atkObj, "selection_changed");
      break;
    }

    case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
        MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_SELECTION_CHANGED\n"));
        g_signal_emit_by_name(atkObj, "text_selection_changed");
        break;

    case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
      {
        MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_CARET_MOVED\n"));

        AccCaretMoveEvent* caretMoveEvent = downcast_accEvent(aEvent);
        NS_ASSERTION(caretMoveEvent, "Event needs event data");
        if (!caretMoveEvent)
            break;

        PRInt32 caretOffset = caretMoveEvent->GetCaretOffset();
//.........这里部分代码省略.........
开发者ID:Bmetz,项目名称:mozilla-central,代码行数:101,代码来源:AccessibleWrap.cpp

示例2: FireAtkTextChangedEvent

nsresult
AccessibleWrap::HandleAccEvent(AccEvent* aEvent)
{
  nsresult rv = Accessible::HandleAccEvent(aEvent);
  NS_ENSURE_SUCCESS(rv, rv);

    Accessible* accessible = aEvent->GetAccessible();
    NS_ENSURE_TRUE(accessible, NS_ERROR_FAILURE);

    // The accessible can become defunct if we have an xpcom event listener
    // which decides it would be fun to change the DOM and flush layout.
    if (accessible->IsDefunct())
        return NS_OK;

    uint32_t type = aEvent->GetEventType();

    AtkObject* atkObj = AccessibleWrap::GetAtkObject(accessible);

  // We don't create ATK objects for plain text leaves, just return NS_OK in
  // such case.
    if (!atkObj) {
        NS_ASSERTION(type == nsIAccessibleEvent::EVENT_SHOW ||
                     type == nsIAccessibleEvent::EVENT_HIDE,
                     "Event other than SHOW and HIDE fired for plain text leaves");
        return NS_OK;
    }

    AccessibleWrap* accWrap = GetAccessibleWrap(atkObj);
    if (!accWrap) {
        return NS_OK; // Node is shut down
    }

    switch (type) {
    case nsIAccessibleEvent::EVENT_STATE_CHANGE:
      {
        AccStateChangeEvent* event = downcast_accEvent(aEvent);
        MAI_ATK_OBJECT(atkObj)->FireStateChangeEvent(event->GetState(),
                                                     event->IsStateEnabled());
        break;
      }

    case nsIAccessibleEvent::EVENT_TEXT_REMOVED:
    case nsIAccessibleEvent::EVENT_TEXT_INSERTED:
        return FireAtkTextChangedEvent(aEvent, atkObj);

    case nsIAccessibleEvent::EVENT_FOCUS:
      {
        a11y::RootAccessible* rootAccWrap = accWrap->RootAccessible();
        if (rootAccWrap && rootAccWrap->mActivated) {
            atk_focus_tracker_notify(atkObj);
            // Fire state change event for focus
            atk_object_notify_state_change(atkObj, ATK_STATE_FOCUSED, true);
            return NS_OK;
        }
      } break;

    case nsIAccessibleEvent::EVENT_NAME_CHANGE:
      {
        nsAutoString newName;
        accessible->Name(newName);

        MaybeFireNameChange(atkObj, newName);

        break;
      }

  case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
    if (accessible->HasNumericValue()) {
      // Make sure this is a numeric value. Don't fire for string value changes
      // (e.g. text editing) ATK values are always numeric.
      g_object_notify((GObject*)atkObj, "accessible-value");
    }
    break;

    case nsIAccessibleEvent::EVENT_SELECTION:
    case nsIAccessibleEvent::EVENT_SELECTION_ADD:
    case nsIAccessibleEvent::EVENT_SELECTION_REMOVE:
    {
      // XXX: dupe events may be fired
      AccSelChangeEvent* selChangeEvent = downcast_accEvent(aEvent);
      g_signal_emit_by_name(AccessibleWrap::GetAtkObject(selChangeEvent->Widget()),
                            "selection_changed");
      break;
    }

    case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
    {
      g_signal_emit_by_name(atkObj, "selection_changed");
      break;
    }

    case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
        g_signal_emit_by_name(atkObj, "text_selection_changed");
        break;

    case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
      {
        AccCaretMoveEvent* caretMoveEvent = downcast_accEvent(aEvent);
        NS_ASSERTION(caretMoveEvent, "Event needs event data");
        if (!caretMoveEvent)
//.........这里部分代码省略.........
开发者ID:AtulKumar2,项目名称:gecko-dev,代码行数:101,代码来源:AccessibleWrap.cpp


注:本文中的AccessibleWrap::RootAccessible方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。