本文整理汇总了C++中DocAccessible::ContentRemoved方法的典型用法代码示例。如果您正苦于以下问题：C++ DocAccessible::ContentRemoved方法的具体用法？C++ DocAccessible::ContentRemoved怎么用？C++ DocAccessible::ContentRemoved使用的例子？那么, 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类DocAccessible的用法示例。
在下文中一共展示了DocAccessible::ContentRemoved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:
PLDHashOperator
NotificationController::TextEnumerator(nsCOMPtrHashKey<nsIContent>* aEntry,
void* aUserArg)
{
DocAccessible* document = static_cast<DocAccessible*>(aUserArg);
nsIContent* textNode = aEntry->GetKey();
Accessible* textAcc = document->GetAccessible(textNode);
// If the text node is not in tree or doesn't have frame then this case should
// have been handled already by content removal notifications.
nsINode* containerNode = textNode->GetParentNode();
if (!containerNode) {
NS_ASSERTION(!textAcc,
"Text node was removed but accessible is kept alive!");
return PL_DHASH_NEXT;
}
nsIFrame* textFrame = textNode->GetPrimaryFrame();
if (!textFrame) {
NS_ASSERTION(!textAcc,
"Text node isn't rendered but accessible is kept alive!");
return PL_DHASH_NEXT;
}
nsIContent* containerElm = containerNode->IsElement() ?
containerNode->AsElement() : nullptr;
nsAutoString text;
textFrame->GetRenderedText(&text);
// Remove text accessible if rendered text is empty.
if (textAcc) {
if (text.IsEmpty()) {
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eTree | logging::eText)) {
logging::MsgBegin("TREE", "text node lost its content");
logging::Node("container", containerElm);
logging::Node("content", textNode);
logging::MsgEnd();
}
#endif
document->ContentRemoved(containerElm, textNode);
return PL_DHASH_NEXT;
}
// Update text of the accessible and fire text change events.
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eText)) {
logging::MsgBegin("TEXT", "text may be changed");
logging::Node("container", containerElm);
logging::Node("content", textNode);
logging::MsgEntry("old text '%s'",
NS_ConvertUTF16toUTF8(textAcc->AsTextLeaf()->Text()).get());
logging::MsgEntry("new text: '%s'",
NS_ConvertUTF16toUTF8(text).get());
logging::MsgEnd();
}
#endif
TextUpdater::Run(document, textAcc->AsTextLeaf(), text);
return PL_DHASH_NEXT;
}
// Append an accessible if rendered text is not empty.
if (!text.IsEmpty()) {
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eTree | logging::eText)) {
logging::MsgBegin("TREE", "text node gains new content");
logging::Node("container", containerElm);
logging::Node("content", textNode);
logging::MsgEnd();
}
#endif
// Make sure the text node is in accessible document still.
Accessible* container = document->GetAccessibleOrContainer(containerNode);
NS_ASSERTION(container,
"Text node having rendered text hasn't accessible document!");
if (container) {
nsTArray<nsCOMPtr<nsIContent> > insertedContents;
insertedContents.AppendElement(textNode);
document->ProcessContentInserted(container, &insertedContents);
}
}
return PL_DHASH_NEXT;
}示例2: printf
PLDHashOperator
NotificationController::TextEnumerator(nsCOMPtrHashKey<nsIContent>* aEntry,
void* aUserArg)
{
DocAccessible* document = static_cast<DocAccessible*>(aUserArg);
nsIContent* textNode = aEntry->GetKey();
Accessible* textAcc = document->GetAccessible(textNode);
// If the text node is not in tree or doesn't have frame then this case should
// have been handled already by content removal notifications.
nsINode* containerNode = textNode->GetNodeParent();
if (!containerNode) {
NS_ASSERTION(!textAcc,
"Text node was removed but accessible is kept alive!");
return PL_DHASH_NEXT;
}
nsIFrame* textFrame = textNode->GetPrimaryFrame();
if (!textFrame) {
NS_ASSERTION(!textAcc,
"Text node isn't rendered but accessible is kept alive!");
return PL_DHASH_NEXT;
}
nsIContent* containerElm = containerNode->IsElement() ?
containerNode->AsElement() : nsnull;
nsAutoString text;
textFrame->GetRenderedText(&text);
// Remove text accessible if rendered text is empty.
if (textAcc) {
if (text.IsEmpty()) {
#ifdef DEBUG_NOTIFICATIONS
PRUint32 index = containerNode->IndexOf(textNode);
nsCAutoString tag;
nsCAutoString id;
if (containerElm) {
containerElm->Tag()->ToUTF8String(tag);
nsIAtom* atomid = containerElm->GetID();
if (atomid)
atomid->ToUTF8String(id);
}
printf("\npending text node removal: container: %[email protected]='%s', index in container: %d\n\n",
tag.get(), id.get(), index);
#endif
document->ContentRemoved(containerElm, textNode);
return PL_DHASH_NEXT;
}
// Update text of the accessible and fire text change events.
#ifdef DEBUG_TEXTCHANGE
PRUint32 index = containerNode->IndexOf(textNode);
nsCAutoString tag;
nsCAutoString id;
if (containerElm) {
containerElm->Tag()->ToUTF8String(tag);
nsIAtom* atomid = containerElm->GetID();
if (atomid)
atomid->ToUTF8String(id);
}
printf("\ntext may be changed: container: %[email protected]='%s', index in container: %d, old text '%s', new text: '%s'\n\n",
tag.get(), id.get(), index,
NS_ConvertUTF16toUTF8(textAcc->AsTextLeaf()->Text()).get(),
NS_ConvertUTF16toUTF8(text).get());
#endif
TextUpdater::Run(document, textAcc->AsTextLeaf(), text);
return PL_DHASH_NEXT;
}
// Append an accessible if rendered text is not empty.
if (!text.IsEmpty()) {
#ifdef DEBUG_NOTIFICATIONS
PRUint32 index = containerNode->IndexOf(textNode);
nsCAutoString tag;
nsCAutoString id;
if (containerElm) {
containerElm->Tag()->ToUTF8String(tag);
nsIAtom* atomid = containerElm->GetID();
if (atomid)
atomid->ToUTF8String(id);
}
printf("\npending text node insertion: container: %[email protected]='%s', index in container: %d\n\n",
tag.get(), id.get(), index);
#endif
// Make sure the text node is in accessible document still.
Accessible* container = document->GetAccessibleOrContainer(containerNode);
NS_ASSERTION(container,
"Text node having rendered text hasn't accessible document!");
if (container) {
nsTArray<nsCOMPtr<nsIContent> > insertedContents;
//.........这里部分代码省略.........