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pjs/editor/base/nsTextEditor.cpp

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/* -*- Mode: C++ tab-width: 2 indent-tabs-mode: nil c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL") you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsTextEditor.h"
#include "nsIEditorSupport.h"
#include "nsEditorEventListeners.h"
#include "nsIEditProperty.h"
#include "nsIStreamListener.h"
#include "nsIParser.h"
#include "nsParserCIID.h"
#include "nsIDocument.h"
#include "nsIHTMLContentSink.h"
#include "nsHTMLContentSinkStream.h"
#include "nsHTMLToTXTSinkStream.h"
#include "nsXIFDTD.h"
#include "nsIDOMDocument.h"
#include "nsIDOMEventReceiver.h"
#include "nsIDOMKeyListener.h"
#include "nsIDOMMouseListener.h"
#include "nsIDOMDragListener.h"
#include "nsIDOMSelection.h"
#include "nsIDOMRange.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMCharacterData.h"
#include "nsIDOMTextListener.h"
#include "nsEditorCID.h"
#include "nsISupportsArray.h"
#include "nsIEnumerator.h"
#include "nsIContentIterator.h"
#include "nsIContent.h"
#include "nsLayoutCID.h"
#include "nsIPresShell.h"
#include "nsIStyleContext.h"
// transactions the text editor knows how to build itself
#include "TransactionFactory.h"
#include "PlaceholderTxn.h"
#include "InsertTextTxn.h"
class nsIFrame;
#ifdef XP_UNIX
#include <strstream.h>
#endif
#ifdef XP_MAC
#include <sstream>
#include <string>
#endif
#ifdef XP_PC
#include <strstrea.h>
#endif
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsTextEditRules.h"
static NS_DEFINE_IID(kIDOMEventReceiverIID, NS_IDOMEVENTRECEIVER_IID);
static NS_DEFINE_IID(kIDOMMouseListenerIID, NS_IDOMMOUSELISTENER_IID);
static NS_DEFINE_IID(kIDOMKeyListenerIID, NS_IDOMKEYLISTENER_IID);
static NS_DEFINE_IID(kIDOMTextListenerIID, NS_IDOMTEXTLISTENER_IID);
static NS_DEFINE_IID(kIDOMDragListenerIID, NS_IDOMDRAGLISTENER_IID);
static NS_DEFINE_IID(kIEditPropertyIID, NS_IEDITPROPERTY_IID);
static NS_DEFINE_CID(kEditorCID, NS_EDITOR_CID);
static NS_DEFINE_IID(kIEditorIID, NS_IEDITOR_IID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kITextEditorIID, NS_ITEXTEDITOR_IID);
static NS_DEFINE_CID(kTextEditorCID, NS_TEXTEDITOR_CID);
static NS_DEFINE_IID(kIContentIteratorIID, NS_ICONTENTITERTOR_IID);
static NS_DEFINE_CID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
nsTextEditor::nsTextEditor()
{
// Done in nsEditor
// NS_INIT_REFCNT();
mRules = nsnull;
}
nsTextEditor::~nsTextEditor()
{
//the autopointers will clear themselves up.
//but we need to also remove the listeners or we have a leak
nsCOMPtr<nsIDOMDocument> doc;
nsEditor::GetDocument(getter_AddRefs(doc));
if (doc)
{
nsCOMPtr<nsIDOMEventReceiver> erP;
nsresult result = doc->QueryInterface(kIDOMEventReceiverIID, getter_AddRefs(erP));
if (NS_SUCCEEDED(result) && erP)
{
if (mKeyListenerP) {
erP->RemoveEventListenerByIID(mKeyListenerP, kIDOMKeyListenerIID);
}
if (mMouseListenerP) {
erP->RemoveEventListenerByIID(mMouseListenerP, kIDOMMouseListenerIID);
}
if (mTextListenerP) {
erP->RemoveEventListenerByIID(mTextListenerP, kIDOMTextListenerIID);
}
if (mDragListenerP) {
erP->RemoveEventListenerByIID(mDragListenerP, kIDOMDragListenerIID);
}
}
else
NS_NOTREACHED("~nsTextEditor");
}
if (mRules) {
delete mRules;
}
}
// Adds appropriate AddRef, Release, and QueryInterface methods for derived class
//NS_IMPL_ISUPPORTS_INHERITED(nsTextEditor, nsEditor, nsITextEditor)
//NS_IMPL_ADDREF_INHERITED(Class, Super)
NS_IMETHODIMP_(nsrefcnt) nsTextEditor::AddRef(void)
{
return nsEditor::AddRef();
}
//NS_IMPL_RELEASE_INHERITED(Class, Super)
NS_IMETHODIMP_(nsrefcnt) nsTextEditor::Release(void)
{
return nsEditor::Release();
}
//NS_IMPL_QUERY_INTERFACE_INHERITED(Class, Super, AdditionalInterface)
NS_IMETHODIMP nsTextEditor::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
if (!aInstancePtr) return NS_ERROR_NULL_POINTER;
if (aIID.Equals(nsITextEditor::GetIID())) {
*aInstancePtr = NS_STATIC_CAST(nsITextEditor*, this);
NS_ADDREF_THIS();
return NS_OK;
}
return nsEditor::QueryInterface(aIID, aInstancePtr);
}
NS_IMETHODIMP nsTextEditor::Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell)
{
NS_PRECONDITION(nsnull!=aDoc && nsnull!=aPresShell, "bad arg");
nsresult result=NS_ERROR_NULL_POINTER;
if ((nsnull!=aDoc) && (nsnull!=aPresShell))
{
// Init the base editor
result = nsEditor::Init(aDoc, aPresShell);
if (NS_OK != result)
return result;
result = NS_NewEditorKeyListener(getter_AddRefs(mKeyListenerP), this);
if (NS_OK != result) {
return result;
}
result = NS_NewEditorMouseListener(getter_AddRefs(mMouseListenerP), this);
if (NS_OK != result) {
// drop the key listener if we couldn't get a mouse listener.
mKeyListenerP = do_QueryInterface(0);
return result;
}
result = NS_NewEditorTextListener(getter_AddRefs(mTextListenerP),this);
if (NS_OK !=result) {
// drop the key and mouse listeners
#ifdef DEBUG_TAGUE
printf("nsTextEditor.cpp: failed to get TextEvent Listener\n");
#endif
mMouseListenerP = do_QueryInterface(0);
mKeyListenerP = do_QueryInterface(0);
return result;
}
result = NS_NewEditorDragListener(getter_AddRefs(mDragListenerP), this);
if (NS_OK != result) {
//return result;
mMouseListenerP = do_QueryInterface(0);
mKeyListenerP = do_QueryInterface(0);
mTextListenerP = do_QueryInterface(0);
}
nsCOMPtr<nsIDOMEventReceiver> erP;
result = aDoc->QueryInterface(kIDOMEventReceiverIID, getter_AddRefs(erP));
if (NS_OK != result)
{
mKeyListenerP = do_QueryInterface(0);
mMouseListenerP = do_QueryInterface(0); //dont need these if we cant register them
mTextListenerP = do_QueryInterface(0);
mDragListenerP = do_QueryInterface(0); //dont need these if we cant register them
return result;
}
//cmanske: Shouldn't we check result from this?
erP->AddEventListenerByIID(mKeyListenerP, kIDOMKeyListenerIID);
//erP->AddEventListenerByIID(mDragListenerP, kIDOMDragListenerIID);
//erP->AddEventListenerByIID(mMouseListenerP, kIDOMMouseListenerIID);
erP->AddEventListenerByIID(mTextListenerP,kIDOMTextListenerIID);
// instantiate the rules for this text editor
// XXX: we should be told which set of rules to instantiate
mRules = new nsTextEditRules();
mRules->Init(this);
result = NS_OK;
EnableUndo(PR_TRUE);
}
return result;
}
// this is a total hack for now. We don't yet have a way of getting the style properties
// of the current selection, so we can't do anything useful here except show off a little.
NS_IMETHODIMP nsTextEditor::SetTextProperty(nsIAtom *aProperty)
{
if (!aProperty)
return NS_ERROR_NULL_POINTER;
nsresult result=NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDOMSelection>selection;
result = nsEditor::GetSelection(getter_AddRefs(selection));
if ((NS_SUCCEEDED(result)) && selection)
{
nsEditor::BeginTransaction();
nsCOMPtr<nsIEnumerator> enumerator;
enumerator = do_QueryInterface(selection, &result);
if ((NS_SUCCEEDED(result)) && enumerator)
{
enumerator->First();
nsISupports *currentItem;
result = enumerator->CurrentItem(&currentItem);
if ((NS_SUCCEEDED(result)) && (nsnull!=currentItem))
{
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIDOMNode>commonParent;
result = range->GetCommonParent(getter_AddRefs(commonParent));
if ((NS_SUCCEEDED(result)) && commonParent)
{
PRInt32 startOffset, endOffset;
range->GetStartOffset(&startOffset);
range->GetEndOffset(&endOffset);
nsCOMPtr<nsIDOMNode> startParent; nsCOMPtr<nsIDOMNode> endParent;
range->GetStartParent(getter_AddRefs(startParent));
range->GetEndParent(getter_AddRefs(endParent));
if (startParent.get()==endParent.get())
{ // the range is entirely contained within a single text node
// commonParent==aStartParent, so get the "real" parent of the selection
startParent->GetParentNode(getter_AddRefs(commonParent));
result = SetTextPropertiesForNode(startParent, commonParent,
startOffset, endOffset,
aProperty);
}
else
{
nsCOMPtr<nsIDOMNode> startGrandParent;
startParent->GetParentNode(getter_AddRefs(startGrandParent));
nsCOMPtr<nsIDOMNode> endGrandParent;
endParent->GetParentNode(getter_AddRefs(endGrandParent));
if (NS_SUCCEEDED(result))
{
if (endGrandParent.get()==startGrandParent.get())
{ // the range is between 2 nodes that have a common (immediate) grandparent
result = SetTextPropertiesForNodesWithSameParent(startParent,startOffset,
endParent, endOffset,
commonParent,
aProperty);
}
else
{ // the range is between 2 nodes that have no simple relationship
result = SetTextPropertiesForNodeWithDifferentParents(range,
startParent,startOffset,
endParent, endOffset,
commonParent,
aProperty);
}
}
}
if (NS_SUCCEEDED(result))
{ // compute a range for the selection
// don't want to actually do anything with selection, because
// we are still iterating through it. Just want to create and remember
// an nsIDOMRange, and later add the range to the selection after clearing it.
// XXX: I'm blocked here because nsIDOMSelection doesn't provide a mechanism
// for setting a compound selection yet.
}
}
}
}
nsEditor::EndTransaction();
if (NS_SUCCEEDED(result))
{ // set the selection
// XXX: can't do anything until I can create ranges
}
}
return result;
}
NS_IMETHODIMP nsTextEditor::GetTextProperty(nsIAtom *aProperty, PRBool &aAny, PRBool &aAll)
{
if (!aProperty)
return NS_ERROR_NULL_POINTER;
nsresult result=NS_ERROR_NOT_INITIALIZED;
aAny=PR_FALSE;
aAll=PR_TRUE;
nsCOMPtr<nsIDOMSelection>selection;
result = nsEditor::GetSelection(getter_AddRefs(selection));
if ((NS_SUCCEEDED(result)) && selection)
{
nsCOMPtr<nsIEnumerator> enumerator;
enumerator = do_QueryInterface(selection, &result);
if ((NS_SUCCEEDED(result)) && enumerator)
{
enumerator->First();
nsISupports *currentItem;
result = enumerator->CurrentItem(&currentItem);
if ((NS_SUCCEEDED(result)) && currentItem)
{
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
nsCOMPtr<nsIContentIterator> iter;
result = nsComponentManager::CreateInstance(kCContentIteratorCID, nsnull,
kIContentIteratorIID,
getter_AddRefs(iter));
if ((NS_SUCCEEDED(result)) && iter)
{
iter->Init(range);
// loop through the content iterator for each content node
// for each text node:
// get the frame for the content, and from it the style context
// ask the style context about the property
nsCOMPtr<nsIContent> content;
result = iter->CurrentNode(getter_AddRefs(content));
while (NS_COMFALSE == iter->IsDone())
{
nsCOMPtr<nsIDOMCharacterData>text;
text = do_QueryInterface(content);
if (text)
{
nsCOMPtr<nsIPresShell>presShell;
nsEditor::GetPresShell(getter_AddRefs(presShell));
NS_ASSERTION(presShell, "bad state, null pres shell");
if (presShell)
{
nsIFrame *frame;
result = presShell->GetPrimaryFrameFor(content, &frame);
if ((NS_SUCCEEDED(result)) && frame)
{
nsCOMPtr<nsIStyleContext> sc;
result = presShell->GetStyleContextFor(frame, getter_AddRefs(sc));
if ((NS_SUCCEEDED(result)) && sc)
{
PRBool isSet;
IsTextStyleSet(sc, aProperty, isSet);
if (PR_TRUE==isSet) {
aAny = PR_TRUE;
}
else {
aAll = PR_FALSE;
}
}
}
}
}
iter->Next();
result = iter->CurrentNode(getter_AddRefs(content));
}
}
}
}
}
return result;
}
void nsTextEditor::IsTextStyleSet(nsIStyleContext *aSC,
nsIAtom *aProperty,
PRBool &aIsSet) const
{
aIsSet = PR_FALSE;
if (aSC && aProperty)
{
nsStyleFont* font = (nsStyleFont*)aSC->GetStyleData(eStyleStruct_Font);
if (nsIEditProperty::italic==aProperty)
{
aIsSet = PRBool(font->mFont.style & NS_FONT_STYLE_ITALIC);
}
else if (nsIEditProperty::bold==aProperty)
{ // XXX: check this logic with Peter
aIsSet = PRBool(font->mFont.weight > NS_FONT_WEIGHT_NORMAL);
}
}
}
NS_IMETHODIMP nsTextEditor::RemoveTextProperty(nsIAtom *aProperty)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::DeleteSelection(nsIEditor::Direction aDir)
{
if (!mRules) { return NS_ERROR_NOT_INITIALIZED; }
nsCOMPtr<nsIDOMSelection> selection;
PRBool cancel= PR_FALSE;
nsresult result = nsEditor::BeginTransaction();
if (NS_FAILED(result)) { return result; }
// pre-process
nsEditor::GetSelection(getter_AddRefs(selection));
result = mRules->WillDeleteSelection(selection, &cancel);
if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
{
result = nsEditor::DeleteSelection(aDir);
// post-process
result = mRules->DidDeleteSelection(selection, result);
}
nsresult endTxnResult = nsEditor::EndTransaction(); // don't return this result!
NS_ASSERTION ((NS_SUCCEEDED(endTxnResult)), "bad end transaction result");
// XXXX: Horrible hack! We are doing this because
// of an error in Gecko which is not rendering the
// document after a change via the DOM - gpk 2/13/99
// BEGIN HACK!!!
HACKForceRedraw();
// END HACK
return result;
}
NS_IMETHODIMP nsTextEditor::InsertText(const nsString& aStringToInsert)
{
if (!mRules) { return NS_ERROR_NOT_INITIALIZED; }
nsCOMPtr<nsIDOMSelection> selection;
PRBool cancel= PR_FALSE;
// pre-process
nsEditor::GetSelection(getter_AddRefs(selection));
nsAutoString stringToInsert;
PlaceholderTxn *placeholderTxn=nsnull;
nsresult result = mRules->WillInsertText(selection, aStringToInsert, &cancel, stringToInsert,
&placeholderTxn);
if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
{
result = nsEditor::InsertText(stringToInsert);
// post-process
result = mRules->DidInsertText(selection, stringToInsert, result);
}
if (placeholderTxn)
placeholderTxn->SetAbsorb(PR_FALSE); // this ends the merging of txns into placeholderTxn
// BEGIN HACK!!!
HACKForceRedraw();
// END HACK
return result;
}
NS_IMETHODIMP nsTextEditor::InsertBreak()
{
nsresult result;
if (!mRules) { return NS_ERROR_NOT_INITIALIZED; }
nsCOMPtr<nsIDOMSelection> selection;
PRBool cancel= PR_FALSE;
result = nsEditor::BeginTransaction();
if (NS_FAILED(result)) { return result; }
// pre-process
nsEditor::GetSelection(getter_AddRefs(selection));
result = mRules->WillInsertBreak(selection, &cancel);
if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
{
// create the new BR node
nsCOMPtr<nsIDOMNode> newNode;
nsAutoString tag("BR");
result = nsEditor::DeleteSelectionAndCreateNode(tag, getter_AddRefs(newNode));
if (NS_SUCCEEDED(result) && newNode)
{
// set the selection to the new node
nsCOMPtr<nsIDOMNode>parent;
result = newNode->GetParentNode(getter_AddRefs(parent));
if (NS_SUCCEEDED(result) && parent)
{
PRInt32 offsetInParent=-1; // we use the -1 as a marker to see if we need to compute this or not
nsCOMPtr<nsIDOMNode>nextNode;
newNode->GetNextSibling(getter_AddRefs(nextNode));
if (nextNode)
{
nsCOMPtr<nsIDOMCharacterData>nextTextNode;
nextTextNode = do_QueryInterface(nextNode);
if (!nextTextNode) {
nextNode = do_QueryInterface(newNode);
}
else {
offsetInParent=0;
}
}
else {
nextNode = do_QueryInterface(newNode);
}
result = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_SUCCEEDED(result))
{
if (-1==offsetInParent)
{
nextNode->GetParentNode(getter_AddRefs(parent));
result = nsIEditorSupport::GetChildOffset(nextNode, parent, offsetInParent);
if (NS_SUCCEEDED(result)) {
selection->Collapse(parent, offsetInParent+1); // +1 to insert just after the break
}
}
else
{
selection->Collapse(nextNode, offsetInParent);
}
}
}
}
// post-process, always called if WillInsertBreak didn't return cancel==PR_TRUE
result = mRules->DidInsertBreak(selection, result);
}
nsresult endTxnResult = nsEditor::EndTransaction(); // don't return this result!
NS_ASSERTION ((NS_SUCCEEDED(endTxnResult)), "bad end transaction result");
// XXXX: Horrible hack! We are doing this because
// of an error in Gecko which is not rendering the
// document after a change via the DOM - gpk 2/13/99
// BEGIN HACK!!!
HACKForceRedraw();
// END HACK
return result;
}
NS_IMETHODIMP nsTextEditor::EnableUndo(PRBool aEnable)
{
return nsEditor::EnableUndo(aEnable);
}
NS_IMETHODIMP nsTextEditor::Undo(PRUint32 aCount)
{
nsCOMPtr<nsIDOMSelection> selection;
PRBool cancel= PR_FALSE;
// pre-process
nsEditor::GetSelection(getter_AddRefs(selection));
nsresult result = mRules->WillUndo(selection, &cancel);
if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
{
result = nsEditor::Undo(aCount);
nsEditor::GetSelection(getter_AddRefs(selection));
result = mRules->DidUndo(selection, result);
}
return result;
}
NS_IMETHODIMP nsTextEditor::CanUndo(PRBool &aIsEnabled, PRBool &aCanUndo)
{
return nsEditor::CanUndo(aIsEnabled, aCanUndo);
}
NS_IMETHODIMP nsTextEditor::Redo(PRUint32 aCount)
{
nsCOMPtr<nsIDOMSelection> selection;
PRBool cancel= PR_FALSE;
// pre-process
nsEditor::GetSelection(getter_AddRefs(selection));
nsresult result = mRules->WillRedo(selection, &cancel);
if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
{
result = nsEditor::Redo(aCount);
nsEditor::GetSelection(getter_AddRefs(selection));
result = mRules->DidRedo(selection, result);
}
return result;
}
NS_IMETHODIMP nsTextEditor::CanRedo(PRBool &aIsEnabled, PRBool &aCanRedo)
{
return nsEditor::CanRedo(aIsEnabled, aCanRedo);
}
NS_IMETHODIMP nsTextEditor::BeginTransaction()
{
return nsEditor::BeginTransaction();
}
NS_IMETHODIMP nsTextEditor::EndTransaction()
{
return nsEditor::EndTransaction();
}
NS_IMETHODIMP nsTextEditor::MoveSelectionUp(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::MoveSelectionDown(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::MoveSelectionNext(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::MoveSelectionPrevious(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::SelectNext(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::SelectPrevious(nsIAtom *aIncrement, PRBool aExtendSelection)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::SelectAll()
{
return nsEditor::SelectAll();
}
NS_IMETHODIMP nsTextEditor::ScrollUp(nsIAtom *aIncrement)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::ScrollDown(nsIAtom *aIncrement)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsTextEditor::ScrollIntoView(PRBool aScrollToBegin)
{
return nsEditor::ScrollIntoView(aScrollToBegin);
}
NS_IMETHODIMP nsTextEditor::Cut()
{
return nsEditor::Cut();
}
NS_IMETHODIMP nsTextEditor::Copy()
{
return nsEditor::Copy();
}
NS_IMETHODIMP nsTextEditor::Paste()
{
return nsEditor::Paste();
}
NS_IMETHODIMP nsTextEditor::Insert(nsIInputStream *aInputStream)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
#ifdef XP_MAC
static void WriteFromStringstream(stringstream& aIn, nsString& aOutputString)
{
string theString = aIn.str();
aOutputString.SetLength(0); // empty the string
aOutputString += theString.data();
aOutputString.SetLength(theString.length()); // make sure it's terminated
/* relace LF with CR. Don't do this here, because strings passed out
to JavaScript need LF termination.
PRUnichar lineFeed = '\n';
PRUnichar carriageReturn = '\r';
aOutputString.ReplaceChar(lineFeed, carriageReturn);
*/
}
#else
static void WriteFromOstrstream(ostrstream& aIn, nsString& aOutputString)
{
char* strData = aIn.str(); // get a copy of the buffer (unterminated)
aOutputString.SetLength(0); // empty the string
aOutputString += strData;
aOutputString.SetLength(aIn.pcount()); // terminate
// in ostrstreams if you call the str() function
// then you are responsible for deleting the string
delete strData;
}
#endif
NS_IMETHODIMP nsTextEditor::OutputText(nsString& aOutputString)
{
#ifdef XP_MAC
stringstream outStream;
#else
ostrstream outStream;
#endif
nsresult rv = NS_ERROR_FAILURE;
nsIPresShell* shell = nsnull;
GetPresShell(&shell);
if (nsnull != shell) {
nsCOMPtr<nsIDocument> doc;
shell->GetDocument(getter_AddRefs(doc));
if (doc) {
nsString buffer;
doc->CreateXIF(buffer);
nsIParser* parser;
static NS_DEFINE_IID(kCParserIID, NS_IPARSER_IID);
static NS_DEFINE_IID(kCParserCID, NS_PARSER_IID);
rv = nsComponentManager::CreateInstance(kCParserCID,
nsnull,
kCParserIID,
(void **)&parser);
if (NS_OK == rv) {
nsIHTMLContentSink* sink = nsnull;
rv = NS_New_HTMLToTXT_SinkStream(&sink);
if (NS_OK == rv) {
// what't this cast doing here, Greg?
((nsHTMLContentSinkStream*)sink)->SetOutputStream(outStream);
if (NS_OK == rv) {
parser->SetContentSink(sink);
nsIDTD* dtd = nsnull;
rv = NS_NewXIFDTD(&dtd);
if (NS_OK == rv) {
parser->RegisterDTD(dtd);
parser->Parse(buffer, 0, "text/xif",PR_FALSE,PR_TRUE);
}
#ifdef XP_MAC
WriteFromStringstream(outStream, aOutputString);
#else
WriteFromOstrstream(outStream, aOutputString);
#endif
NS_IF_RELEASE(dtd);
NS_IF_RELEASE(sink);
}
}
NS_RELEASE(parser);
}
}
NS_RELEASE(shell);
}
return rv;
}
NS_IMETHODIMP nsTextEditor::OutputHTML(nsString& aOutputString)
{
#ifdef XP_MAC
stringstream outStream;
#else
ostrstream outStream;
#endif
nsresult rv = NS_ERROR_FAILURE;
nsIPresShell* shell = nsnull;
GetPresShell(&shell);
if (nsnull != shell) {
nsCOMPtr<nsIDocument> doc;
shell->GetDocument(getter_AddRefs(doc));
if (doc) {
nsString buffer;
doc->CreateXIF(buffer);
nsIParser* parser;
static NS_DEFINE_IID(kCParserIID, NS_IPARSER_IID);
static NS_DEFINE_IID(kCParserCID, NS_PARSER_IID);
rv = nsComponentManager::CreateInstance(kCParserCID,
nsnull,
kCParserIID,
(void **)&parser);
if (NS_OK == rv) {
nsIHTMLContentSink* sink = nsnull;
rv = NS_New_HTML_ContentSinkStream(&sink);
if (NS_OK == rv) {
((nsHTMLContentSinkStream*)sink)->SetOutputStream(outStream);
if (NS_OK == rv) {
parser->SetContentSink(sink);
nsIDTD* dtd = nsnull;
rv = NS_NewXIFDTD(&dtd);
if (NS_OK == rv) {
parser->RegisterDTD(dtd);
parser->Parse(buffer, 0, "text/xif",PR_FALSE,PR_TRUE);
}
#ifdef XP_MAC
WriteFromStringstream(outStream, aOutputString);
#else
WriteFromOstrstream(outStream, aOutputString);
#endif
NS_IF_RELEASE(dtd);
NS_IF_RELEASE(sink);
}
}
NS_RELEASE(parser);
}
}
}
return rv;
}
NS_IMETHODIMP nsTextEditor::SetTextPropertiesForNode(nsIDOMNode *aNode,
nsIDOMNode *aParent,
PRInt32 aStartOffset,
PRInt32 aEndOffset,
nsIAtom *aPropName)
{
nsresult result=NS_OK;
nsCOMPtr<nsIDOMCharacterData>nodeAsChar;
nodeAsChar = do_QueryInterface(aNode);
if (!nodeAsChar)
return NS_ERROR_FAILURE;
PRUint32 count;
nodeAsChar->GetLength(&count);
nsCOMPtr<nsIDOMNode>newTextNode; // this will be the text node we move into the new style node
if (aStartOffset!=0)
{
result = nsEditor::SplitNode(aNode, aStartOffset, getter_AddRefs(newTextNode));
}
if (NS_SUCCEEDED(result))
{
if (aEndOffset!=(PRInt32)count)
{
result = nsEditor::SplitNode(aNode, aEndOffset-aStartOffset, getter_AddRefs(newTextNode));
}
else
{
newTextNode = do_QueryInterface(aNode);
}
if (NS_SUCCEEDED(result))
{
nsAutoString tag;
result = SetTagFromProperty(tag, aPropName);
if (NS_SUCCEEDED(result))
{
PRInt32 offsetInParent;
result = nsIEditorSupport::GetChildOffset(aNode, aParent, offsetInParent);
if (NS_SUCCEEDED(result))
{
nsCOMPtr<nsIDOMNode>newStyleNode;
result = nsEditor::CreateNode(tag, aParent, offsetInParent, getter_AddRefs(newStyleNode));
if (NS_SUCCEEDED(result))
{
result = nsEditor::DeleteNode(newTextNode);
if (NS_SUCCEEDED(result)) {
result = nsEditor::InsertNode(newTextNode, newStyleNode, 0);
}
}
}
}
}
}
return result;
}
NS_IMETHODIMP
nsTextEditor::SetTextPropertiesForNodesWithSameParent(nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset,
nsIDOMNode *aParent,
nsIAtom *aPropName)
{
nsresult result=NS_OK;
nsCOMPtr<nsIDOMNode>newLeftTextNode; // this will be the middle text node
if (0!=aStartOffset) {
result = nsEditor::SplitNode(aStartNode, aStartOffset, getter_AddRefs(newLeftTextNode));
}
if (NS_SUCCEEDED(result))
{
nsCOMPtr<nsIDOMCharacterData>endNodeAsChar;
endNodeAsChar = do_QueryInterface(aEndNode);
if (!endNodeAsChar)
return NS_ERROR_FAILURE;
PRUint32 count;
endNodeAsChar->GetLength(&count);
nsCOMPtr<nsIDOMNode>newRightTextNode; // this will be the middle text node
if ((PRInt32)count!=aEndOffset) {
result = nsEditor::SplitNode(aEndNode, aEndOffset, getter_AddRefs(newRightTextNode));
}
else {
newRightTextNode = do_QueryInterface(aEndNode);
}
if (NS_SUCCEEDED(result))
{
PRInt32 offsetInParent;
if (newLeftTextNode) {
result = nsIEditorSupport::GetChildOffset(newLeftTextNode, aParent, offsetInParent);
}
else {
offsetInParent = -1; // relies on +1 below in call to CreateNode
}
if (NS_SUCCEEDED(result))
{
nsAutoString tag;
result = SetTagFromProperty(tag, aPropName);
if (NS_SUCCEEDED(result))
{ // create the new style node, which will be the new parent for the selected nodes
nsCOMPtr<nsIDOMNode>newStyleNode;
result = nsEditor::CreateNode(tag, aParent, offsetInParent+1, getter_AddRefs(newStyleNode));
if (NS_SUCCEEDED(result))
{ // move the right half of the start node into the new style node
nsCOMPtr<nsIDOMNode>intermediateNode;
result = aStartNode->GetNextSibling(getter_AddRefs(intermediateNode));
if (NS_SUCCEEDED(result))
{
result = nsEditor::DeleteNode(aStartNode);
if (NS_SUCCEEDED(result))
{
PRInt32 childIndex=0;
result = nsEditor::InsertNode(aStartNode, newStyleNode, childIndex);
childIndex++;
if (NS_SUCCEEDED(result))
{ // move all the intermediate nodes into the new style node
nsCOMPtr<nsIDOMNode>nextSibling;
while (intermediateNode.get() != aEndNode)
{
if (!intermediateNode)
result = NS_ERROR_NULL_POINTER;
if (NS_FAILED(result)) {
break;
}
// get the next sibling before moving the current child!!!
intermediateNode->GetNextSibling(getter_AddRefs(nextSibling));
result = nsEditor::DeleteNode(intermediateNode);
if (NS_SUCCEEDED(result)) {
result = nsEditor::InsertNode(intermediateNode, newStyleNode, childIndex);
childIndex++;
}
intermediateNode = do_QueryInterface(nextSibling);
}
if (NS_SUCCEEDED(result))
{ // move the left half of the end node into the new style node
result = nsEditor::DeleteNode(newRightTextNode);
if (NS_SUCCEEDED(result))
{
result = nsEditor::InsertNode(newRightTextNode, newStyleNode, childIndex);
}
}
}
}
}
}
}
}
}
}
return result;
}
NS_IMETHODIMP
nsTextEditor::SetTextPropertiesForNodeWithDifferentParents(nsIDOMRange *aRange,
nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset,
nsIDOMNode *aParent,
nsIAtom *aPropName)
{
nsresult result=NS_OK;
if (!aRange || !aStartNode || !aEndNode || !aParent || !aPropName)
return NS_ERROR_NULL_POINTER;
// create a style node for the text in the start parent
nsCOMPtr<nsIDOMNode>parent;
result = aStartNode->GetParentNode(getter_AddRefs(parent));
if (NS_FAILED(result)) {
return result;
}
nsCOMPtr<nsIDOMCharacterData>nodeAsChar;
nodeAsChar = do_QueryInterface(aStartNode);
if (!nodeAsChar)
return NS_ERROR_FAILURE;
PRUint32 count;
nodeAsChar->GetLength(&count);
result = SetTextPropertiesForNode(aStartNode, parent, aStartOffset, count, aPropName);
// create a style node for the text in the end parent
result = aEndNode->GetParentNode(getter_AddRefs(parent));
if (NS_FAILED(result)) {
return result;
}
nodeAsChar = do_QueryInterface(aEndNode);
if (!nodeAsChar)
return NS_ERROR_FAILURE;
nodeAsChar->GetLength(&count);
result = SetTextPropertiesForNode(aEndNode, parent, 0, aEndOffset, aPropName);
// create style nodes for all the content between the start and end nodes
nsCOMPtr<nsIContentIterator>iter;
result = nsComponentManager::CreateInstance(kCContentIteratorCID, nsnull,
kIContentIteratorIID, getter_AddRefs(iter));
if ((NS_SUCCEEDED(result)) && iter)
{
nsCOMPtr<nsIContent>startContent;
startContent = do_QueryInterface(aStartNode);
nsCOMPtr<nsIContent>endContent;
endContent = do_QueryInterface(aEndNode);
if (startContent && endContent)
{
iter->Init(aRange);
nsCOMPtr<nsIContent> content;
iter->CurrentNode(getter_AddRefs(content));
nsAutoString tag;
result = SetTagFromProperty(tag, aPropName);
if (NS_FAILED(result)) {
return result;
}
while (NS_COMFALSE == iter->IsDone())
{
if ((content.get() != startContent.get()) &&
(content.get() != endContent.get()))
{
nsCOMPtr<nsIDOMCharacterData>charNode;
charNode = do_QueryInterface(content);
if (charNode)
{
// only want to wrap the text node in a new style node if it doesn't already have that style
nsCOMPtr<nsIDOMNode>parent;
charNode->GetParentNode(getter_AddRefs(parent));
if (!parent) {
return NS_ERROR_NULL_POINTER;
}
nsCOMPtr<nsIContent>parentContent;
parentContent = do_QueryInterface(parent);
PRInt32 offsetInParent;
parentContent->IndexOf(content, offsetInParent);
nsCOMPtr<nsIDOMNode>newStyleNode;
result = nsEditor::CreateNode(tag, parent, offsetInParent, getter_AddRefs(newStyleNode));
if (NS_SUCCEEDED(result) && newStyleNode) {
nsCOMPtr<nsIDOMNode>contentNode;
contentNode = do_QueryInterface(content);
result = nsEditor::DeleteNode(contentNode);
if (NS_SUCCEEDED(result)) {
result = nsEditor::InsertNode(contentNode, newStyleNode, 0);
}
}
}
}
iter->Next();
result = iter->CurrentNode(getter_AddRefs(content));
}
}
}
return result;
}
NS_IMETHODIMP
nsTextEditor::SetTagFromProperty(nsAutoString &aTag, nsIAtom *aPropName) const
{
if (!aPropName) {
return NS_ERROR_NULL_POINTER;
}
if (nsIEditProperty::bold==aPropName) {
aTag = "b";
}
else if (nsIEditProperty::italic==aPropName) {
aTag = "i";
}
else {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
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