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fixed handling of text controls with a max length set

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This commit is contained in:
buster%netscape.com 1999-08-07 05:29:41 +00:00
parent 554895cb53
commit fd79be28bb
2 changed files with 54 additions and 34 deletions

44
editor/base/nsTextEditRules.cpp

@ -258,27 +258,37 @@ nsTextEditRules::WillInsertText(nsIDOMSelection *aSelection,
if ((-1 != aMaxLength) && (mFlags&TEXT_EDITOR_FLAG_PLAINTEXT))
{
// get the current text length
// get the length of inString
// if len(doc) is at or over max, cancel the insert
// if l(doc) + l(input) > max, set aOutString to subset of inString so length = max
// Get the current text length.
// Get the length of inString.
// Get the length of the selection.
// If selection is collapsed, it is length 0.
// Subtract the length of the selection from the len(doc)
// since we'll delete the selection on insert.
// This is resultingDocLength.
// If (resultingDocLength) is at or over max, cancel the insert
// If (resultingDocLength) + (length of input) > max,
// set aOutString to subset of inString so length = max
PRInt32 docLength;
result = mEditor->GetDocumentLength(&docLength);
if (NS_SUCCEEDED(result))
if (NS_FAILED(result)) { return result; }
PRInt32 start, end;
result = mEditor->GetTextSelectionOffsets(aSelection, start, end);
if (NS_FAILED(result)) { return result; }
PRInt32 selectionLength = end-start;
if (selectionLength<0) { selectionLength *= (-1); }
PRInt32 resultingDocLength = docLength - selectionLength;
if (resultingDocLength >= aMaxLength)
{
if (docLength >= aMaxLength)
*aOutString = "";
*aCancel = PR_TRUE;
return result;
}
else
{
PRInt32 inCount = inString.Length();
if ((inCount+resultingDocLength) > aMaxLength)
{
*aOutString = "";
*aCancel = PR_TRUE;
return result;
}
else
{
PRInt32 inCount = inString.Length();
if ((inCount+docLength)>aMaxLength)
{
inString.Truncate(aMaxLength-docLength);
}
inString.Truncate(aMaxLength-resultingDocLength);
}
}
}

44
editor/libeditor/text/nsTextEditRules.cpp

@ -258,27 +258,37 @@ nsTextEditRules::WillInsertText(nsIDOMSelection *aSelection,
if ((-1 != aMaxLength) && (mFlags&TEXT_EDITOR_FLAG_PLAINTEXT))
{
// get the current text length
// get the length of inString
// if len(doc) is at or over max, cancel the insert
// if l(doc) + l(input) > max, set aOutString to subset of inString so length = max
// Get the current text length.
// Get the length of inString.
// Get the length of the selection.
// If selection is collapsed, it is length 0.
// Subtract the length of the selection from the len(doc)
// since we'll delete the selection on insert.
// This is resultingDocLength.
// If (resultingDocLength) is at or over max, cancel the insert
// If (resultingDocLength) + (length of input) > max,
// set aOutString to subset of inString so length = max
PRInt32 docLength;
result = mEditor->GetDocumentLength(&docLength);
if (NS_SUCCEEDED(result))
if (NS_FAILED(result)) { return result; }
PRInt32 start, end;
result = mEditor->GetTextSelectionOffsets(aSelection, start, end);
if (NS_FAILED(result)) { return result; }
PRInt32 selectionLength = end-start;
if (selectionLength<0) { selectionLength *= (-1); }
PRInt32 resultingDocLength = docLength - selectionLength;
if (resultingDocLength >= aMaxLength)
{
if (docLength >= aMaxLength)
*aOutString = "";
*aCancel = PR_TRUE;
return result;
}
else
{
PRInt32 inCount = inString.Length();
if ((inCount+resultingDocLength) > aMaxLength)
{
*aOutString = "";
*aCancel = PR_TRUE;
return result;
}
else
{
PRInt32 inCount = inString.Length();
if ((inCount+docLength)>aMaxLength)
{
inString.Truncate(aMaxLength-docLength);
}
inString.Truncate(aMaxLength-resultingDocLength);
}
}
}