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making nsPresShell and nsDocument support weak references; using weak references to docs and pres shells within the editor

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git-svn-id: svn://10.0.0.236/trunk@44483 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
jfrancis%netscape.com
1999-08-25 10:51:55 +00:00
parent 4a5d0fe5cb
commit 2a60fccebc
22 changed files with 1758 additions and 1550 deletions
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294
mozilla/editor/base/IMETextTxn.cpp
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@@ -43,21 +43,21 @@ IMETextTxn::IMETextTxn()
IMETextTxn::~IMETextTxn()
{
mRangeList = do_QueryInterface(nsnull);
mRangeList = do_QueryInterface(nsnull);
}
NS_IMETHODIMP IMETextTxn::Init(nsIDOMCharacterData *aElement,
PRUint32 aOffset,
PRUint32 aReplaceLength,
nsIPrivateTextRangeList* aTextRangeList,
const nsString &aStringToInsert,
nsIPresShell *aPresShell)
NS_IMETHODIMP IMETextTxn::Init(nsIDOMCharacterData *aElement,
PRUint32 aOffset,
PRUint32 aReplaceLength,
nsIPrivateTextRangeList *aTextRangeList,
const nsString &aStringToInsert,
nsWeakPtr aPresShellWeak)
{
mElement = do_QueryInterface(aElement);
mOffset = aOffset;
mReplaceLength = aReplaceLength;
mStringToInsert = aStringToInsert;
mPresShell = aPresShell;
mPresShellWeak = aPresShellWeak;
mRangeList = do_QueryInterface(aTextRangeList);
mFixed = PR_FALSE;
return NS_OK;
@@ -70,22 +70,25 @@ NS_IMETHODIMP IMETextTxn::Do(void)
printf("Do IME Text element = %p\n", mElement.get());
#endif
// advance caret: This requires the presentation shell to get the selection.
nsCOMPtr<nsIDOMSelection> selection;
nsresult result = mPresShell->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
NS_ASSERTION(selection,"Could not get selection in IMEtextTxn::Do\n");
if (NS_SUCCEEDED(result) && selection) {
if (mReplaceLength==0) {
result = mElement->InsertData(mOffset,mStringToInsert);
} else {
result = mElement->ReplaceData(mOffset,mReplaceLength,mStringToInsert);
}
if (NS_SUCCEEDED(result)) {
result = CollapseTextSelection();
}
}
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
if (!ps) return NS_ERROR_NOT_INITIALIZED;
return result;
// advance caret: This requires the presentation shell to get the selection.
nsCOMPtr<nsIDOMSelection> selection;
nsresult result = ps->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
NS_ASSERTION(selection,"Could not get selection in IMEtextTxn::Do\n");
if (NS_SUCCEEDED(result) && selection) {
if (mReplaceLength==0) {
result = mElement->InsertData(mOffset,mStringToInsert);
} else {
result = mElement->ReplaceData(mOffset,mReplaceLength,mStringToInsert);
}
if (NS_SUCCEEDED(result)) {
result = CollapseTextSelection();
}
}
return result;
}
NS_IMETHODIMP IMETextTxn::Undo(void)
@@ -94,13 +97,16 @@ NS_IMETHODIMP IMETextTxn::Undo(void)
printf("Undo IME Text element = %p\n", mElement.get());
#endif
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
if (!ps) return NS_ERROR_NOT_INITIALIZED;
nsresult result;
PRUint32 length = mStringToInsert.Length();
result = mElement->DeleteData(mOffset, length);
if (NS_SUCCEEDED(result))
{ // set the selection to the insertion point where the string was removed
nsCOMPtr<nsIDOMSelection> selection;
result = mPresShell->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
result = ps->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
if (NS_SUCCEEDED(result) && selection) {
result = selection->Collapse(mElement, mOffset);
NS_ASSERTION((NS_SUCCEEDED(result)), "selection could not be collapsed after undo of IME insert.");
@@ -111,67 +117,67 @@ NS_IMETHODIMP IMETextTxn::Undo(void)
NS_IMETHODIMP IMETextTxn::Merge(PRBool *aDidMerge, nsITransaction *aTransaction)
{
nsresult result;
nsresult result;
#ifdef DEBUG_TAGUE
printf("Merge IME Text element = %p\n", mElement.get());
#endif
//
// check to make sure we have valid return pointers
//
if ((nsnull==aDidMerge) && (nsnull==aTransaction))
{
return NS_OK;
}
//
// check to make sure we have valid return pointers
//
if ((nsnull==aDidMerge) && (nsnull==aTransaction))
{
return NS_OK;
}
//
// check to make sure we aren't fixed, if we are then nothing get's absorbed
//
if (mFixed) {
*aDidMerge = PR_FALSE;
return NS_OK;
}
//
// check to make sure we aren't fixed, if we are then nothing get's absorbed
//
if (mFixed) {
*aDidMerge = PR_FALSE;
return NS_OK;
}
//
// if aTransaction is another IMETextTxn then absorbe it
//
IMETextTxn* otherTxn = nsnull;
result = aTransaction->QueryInterface(IMETextTxn::GetCID(),(void**)&otherTxn);
if (otherTxn && result==NS_OK)
{
//
// we absorbe the next IME transaction by adopting it's insert string as our own
//
nsIPrivateTextRangeList* newTextRangeList;
otherTxn->GetData(mStringToInsert,&newTextRangeList);
mRangeList = do_QueryInterface(newTextRangeList);
*aDidMerge = PR_TRUE;
//
// if aTransaction is another IMETextTxn then absorbe it
//
IMETextTxn* otherTxn = nsnull;
result = aTransaction->QueryInterface(IMETextTxn::GetCID(),(void**)&otherTxn);
if (otherTxn && result==NS_OK)
{
//
// we absorbe the next IME transaction by adopting it's insert string as our own
//
nsIPrivateTextRangeList* newTextRangeList;
otherTxn->GetData(mStringToInsert,&newTextRangeList);
mRangeList = do_QueryInterface(newTextRangeList);
*aDidMerge = PR_TRUE;
#ifdef DEBUG_TAGUE
printf("IMETextTxn assimilated IMETextTxn:%p\n", aTransaction);
printf("IMETextTxn assimilated IMETextTxn:%p\n", aTransaction);
#endif
NS_RELEASE(otherTxn);
return NS_OK;
}
NS_RELEASE(otherTxn);
return NS_OK;
}
//
// second possible case is that we have a commit transaction
//
IMECommitTxn* commitTxn = nsnull;
result = aTransaction->QueryInterface(IMECommitTxn::GetCID(),(void**)&commitTxn);
if (commitTxn && result==NS_OK)
{
(void)CollapseTextSelectionOnCommit();
mFixed = PR_TRUE;
*aDidMerge = PR_TRUE; // absorbe the commit transaction
//
// second possible case is that we have a commit transaction
//
IMECommitTxn* commitTxn = nsnull;
result = aTransaction->QueryInterface(IMECommitTxn::GetCID(),(void**)&commitTxn);
if (commitTxn && result==NS_OK)
{
(void)CollapseTextSelectionOnCommit();
mFixed = PR_TRUE;
*aDidMerge = PR_TRUE; // absorbe the commit transaction
#ifdef DEBUG_TAGUE
printf("IMETextTxn assimilated IMECommitTxn%p\n", aTransaction);
printf("IMETextTxn assimilated IMECommitTxn%p\n", aTransaction);
#endif
NS_RELEASE(commitTxn);
return NS_OK;
}
NS_RELEASE(commitTxn);
return NS_OK;
}
*aDidMerge = PR_FALSE;
return NS_OK;
*aDidMerge = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP IMETextTxn::Write(nsIOutputStream *aOutputStream)
@@ -226,84 +232,88 @@ NS_IMETHODIMP IMETextTxn::GetData(nsString& aResult,nsIPrivateTextRangeList** aT
NS_IMETHODIMP IMETextTxn::CollapseTextSelection(void)
{
nsresult result;
PRBool haveSelectedRange, haveCaretPosition;
PRUint16 textRangeListLength,selectionStart,selectionEnd,
textRangeType, caretPosition, i;
nsIPrivateTextRange* textRange;
nsresult result;
PRBool haveSelectedRange, haveCaretPosition;
PRUint16 textRangeListLength,selectionStart,selectionEnd,
textRangeType, caretPosition, i;
nsIPrivateTextRange* textRange;
haveSelectedRange = PR_FALSE;
haveCaretPosition = PR_FALSE;
haveSelectedRange = PR_FALSE;
haveCaretPosition = PR_FALSE;
#ifdef DEBUG_tague
PRUint16 listlen,start,stop,type;
nsIPrivateTextRange* rangePtr;
result = mRangeList->GetLength(&listlen);
printf("nsIPrivateTextRangeList[%p]\n",mRangeList);
for (i=0;i<listlen;i++) {
(void)mRangeList->Item(i,&rangePtr);
rangePtr->GetRangeStart(&start);
rangePtr->GetRangeEnd(&stop);
rangePtr->GetRangeType(&type);
printf("range[%d] start=%d end=%d type=",i,start,stop,type);
if (type==nsIPrivateTextRange::TEXTRANGE_RAWINPUT) printf("TEXTRANGE_RAWINPUT\n");
if (type==nsIPrivateTextRange::TEXTRANGE_SELECTEDRAWTEXT) printf("TEXTRANGE_SELECTEDRAWTEXT\n");
if (type==nsIPrivateTextRange::TEXTRANGE_CONVERTEDTEXT) printf("TEXTRANGE_CONVERTEDTEXT\n");
if (type==nsIPrivateTextRange::TEXTRANGE_SELECTEDCONVERTEDTEXT) printf("TEXTRANGE_SELECTEDCONVERTEDTEXT\n");
}
PRUint16 listlen,start,stop,type;
nsIPrivateTextRange* rangePtr;
result = mRangeList->GetLength(&listlen);
printf("nsIPrivateTextRangeList[%p]\n",mRangeList);
for (i=0;i<listlen;i++) {
(void)mRangeList->Item(i,&rangePtr);
rangePtr->GetRangeStart(&start);
rangePtr->GetRangeEnd(&stop);
rangePtr->GetRangeType(&type);
printf("range[%d] start=%d end=%d type=",i,start,stop,type);
if (type==nsIPrivateTextRange::TEXTRANGE_RAWINPUT) printf("TEXTRANGE_RAWINPUT\n");
if (type==nsIPrivateTextRange::TEXTRANGE_SELECTEDRAWTEXT) printf("TEXTRANGE_SELECTEDRAWTEXT\n");
if (type==nsIPrivateTextRange::TEXTRANGE_CONVERTEDTEXT) printf("TEXTRANGE_CONVERTEDTEXT\n");
if (type==nsIPrivateTextRange::TEXTRANGE_SELECTEDCONVERTEDTEXT) printf("TEXTRANGE_SELECTEDCONVERTEDTEXT\n");
}
#endif
//
// run through the text range list
//
result = mRangeList->GetLength(&textRangeListLength);
if (NS_SUCCEEDED(result))
{
for(i=0;i<textRangeListLength;i++) {
result = mRangeList->Item(i,&textRange);
if (NS_SUCCEEDED(result))
{
result = textRange->GetRangeType(&textRangeType);
if (textRangeType==nsIPrivateTextRange::TEXTRANGE_SELECTEDCONVERTEDTEXT)
{
haveSelectedRange = PR_TRUE;
textRange->GetRangeStart(&selectionStart);
textRange->GetRangeEnd(&selectionEnd);
}
if (textRangeType==nsIPrivateTextRange::TEXTRANGE_CARETPOSITION)
{
haveCaretPosition = PR_TRUE;
textRange->GetRangeStart(&caretPosition);
}
}
}
}
//
// run through the text range list
//
result = mRangeList->GetLength(&textRangeListLength);
if (NS_SUCCEEDED(result))
{
for(i=0;i<textRangeListLength;i++) {
result = mRangeList->Item(i,&textRange);
if (NS_SUCCEEDED(result))
{
result = textRange->GetRangeType(&textRangeType);
if (textRangeType==nsIPrivateTextRange::TEXTRANGE_SELECTEDCONVERTEDTEXT)
{
haveSelectedRange = PR_TRUE;
textRange->GetRangeStart(&selectionStart);
textRange->GetRangeEnd(&selectionEnd);
}
if (textRangeType==nsIPrivateTextRange::TEXTRANGE_CARETPOSITION)
{
haveCaretPosition = PR_TRUE;
textRange->GetRangeStart(&caretPosition);
}
}
}
}
nsCOMPtr<nsIDOMSelection> selection;
result = mPresShell->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
if (NS_SUCCEEDED(result) && selection){
if (haveSelectedRange) {
result = selection->Collapse(mElement,mOffset+selectionStart);
result = selection->Extend(mElement,mOffset+selectionEnd);
} else {
if (haveCaretPosition)
result = selection->Collapse(mElement,mOffset+caretPosition);
else
result = selection->Collapse(mElement,mOffset+mStringToInsert.Length());
}
}
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
if (!ps) return NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDOMSelection> selection;
result = ps->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
if (NS_SUCCEEDED(result) && selection){
if (haveSelectedRange) {
result = selection->Collapse(mElement,mOffset+selectionStart);
result = selection->Extend(mElement,mOffset+selectionEnd);
} else {
if (haveCaretPosition)
result = selection->Collapse(mElement,mOffset+caretPosition);
else
result = selection->Collapse(mElement,mOffset+mStringToInsert.Length());
}
}
return result;
return result;
}
NS_IMETHODIMP IMETextTxn::CollapseTextSelectionOnCommit(void)
{
nsCOMPtr<nsIDOMSelection> selection;
nsresult result = mPresShell->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
if (NS_SUCCEEDED(result) && selection){
result = selection->Collapse(mElement,mOffset+mStringToInsert.Length());
}
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
if (!ps) return NS_ERROR_NOT_INITIALIZED;
nsresult result = ps->GetSelection(SELECTION_NORMAL, getter_AddRefs(selection));
if (NS_SUCCEEDED(result) && selection){
result = selection->Collapse(mElement,mOffset+mStringToInsert.Length());
}
return result;
return result;
}