335 lines
8.5 KiB
C++
335 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#include "nsIDOMText.h"
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#include "nsGenericDOMDataNode.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIContent.h"
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#include "nsITextContent.h"
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#include "nsFrame.h"
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#include "nsIDocument.h"
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#include "nsCRT.h"
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#include "nsLayoutAtoms.h"
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static NS_DEFINE_IID(kIDOMTextIID, NS_IDOMTEXT_IID);
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static NS_DEFINE_IID(kITextContentIID, NS_ITEXT_CONTENT_IID);
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/* XXX should not be html content; should be nsITextContent */
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class nsTextNode : public nsIDOMText,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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public nsIContent,
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public nsITextContent
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{
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public:
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nsTextNode();
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~nsTextNode();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIDOMNode
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NS_IMPL_IDOMNODE_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMCharacterData
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NS_IMPL_IDOMCHARACTERDATA_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMText
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NS_IMETHOD SplitText(PRUint32 aOffset, nsIDOMText** aReturn);
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// nsIScriptObjectOwner
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NS_IMPL_ISCRIPTOBJECTOWNER_USING_GENERIC_DOM_DATA(mInner)
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// nsIDOMEventReceiver
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NS_IMPL_IDOMEVENTRECEIVER_USING_GENERIC_DOM_DATA(mInner)
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// nsIContent
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NS_IMPL_ICONTENT_USING_GENERIC_DOM_DATA(mInner)
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// nsITextContent
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NS_IMETHOD GetText(const nsTextFragment*& aFragmentsResult,
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PRInt32& aNumFragmentsResult);
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NS_IMETHOD SetText(const PRUnichar* aBuffer,
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PRInt32 aLength,
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PRBool aNotify);
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NS_IMETHOD SetText(const char* aBuffer,
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PRInt32 aLength,
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PRBool aNotify);
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NS_IMETHOD IsOnlyWhitespace(PRBool* aResult);
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protected:
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nsGenericDOMDataNode mInner;
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};
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nsresult NS_NewTextNode(nsIContent** aInstancePtrResult);
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nsresult
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NS_NewTextNode(nsIContent** aInstancePtrResult)
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{
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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nsTextNode* it;
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NS_NEWXPCOM(it, nsTextNode);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(kIContentIID, (void **) aInstancePtrResult);
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}
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nsTextNode::nsTextNode()
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{
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NS_INIT_REFCNT();
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mInner.Init(this);
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}
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nsTextNode::~nsTextNode()
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{
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}
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NS_IMPL_ADDREF(nsTextNode)
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NS_IMPL_RELEASE(nsTextNode)
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NS_IMETHODIMP
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nsTextNode::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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NS_IMPL_DOM_DATA_QUERY_INTERFACE(aIID, aInstancePtr, this)
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if (aIID.Equals(kIDOMTextIID)) {
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nsIDOMText* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(kITextContentIID)) {
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nsITextContent* tmp = this;
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*aInstancePtr = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMETHODIMP
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nsTextNode::GetTag(nsIAtom*& aResult) const
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{
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aResult = nsLayoutAtoms::textTagName;
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NS_ADDREF(aResult);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::GetNodeName(nsString& aNodeName)
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{
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aNodeName.SetString("#text");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::GetNodeType(PRUint16* aNodeType)
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{
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*aNodeType = (PRUint16)nsIDOMNode::TEXT_NODE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsTextNode* it;
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NS_NEWXPCOM(it, nsTextNode);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsAutoString data;
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nsresult result = GetData(data);
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if (NS_FAILED(result)) {
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return result;
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}
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result = it->SetData(data);
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if (NS_FAILED(result)) {
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return result;
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}
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return it->QueryInterface(kIDOMNodeIID, (void**) aReturn);
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}
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NS_IMETHODIMP
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nsTextNode::List(FILE* out, PRInt32 aIndent) const
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{
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NS_PRECONDITION(nsnull != mInner.mDocument, "bad content");
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PRInt32 index;
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for (index = aIndent; --index >= 0; ) fputs(" ", out);
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fprintf(out, "Text refcount=%d<", mRefCnt);
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nsAutoString tmp;
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mInner.ToCString(tmp, 0, mInner.mText.GetLength());
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fputs(tmp, out);
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fputs(">\n", out);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::HandleDOMEvent(nsIPresContext& aPresContext,
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nsEvent* aEvent,
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nsIDOMEvent** aDOMEvent,
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PRUint32 aFlags,
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nsEventStatus& aEventStatus)
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{
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return mInner.HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
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aFlags, aEventStatus);
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}
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//----------------------------------------------------------------------
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// Implementation of the nsIDOMText interface
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NS_IMETHODIMP
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nsTextNode::SplitText(PRUint32 aOffset, nsIDOMText** aReturn)
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{
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nsresult result = NS_OK;
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nsIContent* newNode;
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nsITextContent* text;
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nsAutoString cutText;
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nsIContent* parentNode;
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PRUint32 length;
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GetLength(&length);
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// Cut the second part out of the original text node
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result = SubstringData(aOffset, length-aOffset, cutText);
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if (NS_OK == result) {
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result = DeleteData(aOffset, length-aOffset);
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if (NS_OK == result) {
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// Create a new text node and set its data to the
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// string we just cut out
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result = NS_NewTextNode(&newNode);
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if (NS_OK == result) {
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result = newNode->QueryInterface(kITextContentIID, (void**)&text);
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if (NS_OK == result) {
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text->SetText(cutText, cutText.Length(), PR_FALSE);
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// Find the parent of the current node and insert the
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// new text node as a child after the current node
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GetParent(parentNode);
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if (nsnull != parentNode) {
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PRInt32 index;
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result = parentNode->IndexOf(this, index);
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if (NS_OK == result) {
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result = parentNode->InsertChildAt(newNode, index+1, PR_TRUE);
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}
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NS_RELEASE(parentNode);
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}
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result = text->QueryInterface(kIDOMTextIID, (void**)aReturn);
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NS_RELEASE(text);
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}
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NS_RELEASE(newNode);
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}
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}
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}
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return result;
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}
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//----------------------------------------------------------------------
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// Implementation of the nsITextContent interface
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NS_IMETHODIMP
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nsTextNode::GetText(const nsTextFragment*& aFragmentsResult,
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PRInt32& aNumFragmentsResult)
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{
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aFragmentsResult = &mInner.mText;
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aNumFragmentsResult = 1;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::SetText(const PRUnichar* aBuffer, PRInt32 aLength,
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PRBool aNotify)
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{
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NS_PRECONDITION((aLength >= 0) && (nsnull != aBuffer), "bad args");
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if (aLength < 0) {
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return NS_ERROR_ILLEGAL_VALUE;
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}
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if (nsnull == aBuffer) {
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return NS_ERROR_NULL_POINTER;
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}
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mInner.mText.SetTo(aBuffer, aLength);
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// Trigger a reflow
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if (aNotify && (nsnull != mInner.mDocument)) {
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mInner.mDocument->ContentChanged(this, nsnull);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::SetText(const char* aBuffer, PRInt32 aLength,
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PRBool aNotify)
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{
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NS_PRECONDITION((aLength >= 0) && (nsnull != aBuffer), "bad args");
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if (aLength < 0) {
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return NS_ERROR_ILLEGAL_VALUE;
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}
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if (nsnull == aBuffer) {
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return NS_ERROR_NULL_POINTER;
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}
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mInner.mText.SetTo(aBuffer, aLength);
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// Trigger a reflow
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if (aNotify && (nsnull != mInner.mDocument)) {
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mInner.mDocument->ContentChanged(this, nsnull);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextNode::IsOnlyWhitespace(PRBool* aResult)
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{
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nsTextFragment& frag = mInner.mText;
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if (frag.Is2b()) {
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const PRUnichar* cp = frag.Get2b();
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const PRUnichar* end = cp + frag.GetLength();
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while (cp < end) {
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PRUnichar ch = *cp++;
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if (!XP_IS_SPACE(ch)) {
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*aResult = PR_FALSE;
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return NS_OK;
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}
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}
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}
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else {
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const char* cp = frag.Get1b();
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const char* end = cp + frag.GetLength();
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while (cp < end) {
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PRUnichar ch = PRUnichar(*(unsigned char*)cp);
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cp++;
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if (!XP_IS_SPACE(ch)) {
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*aResult = PR_FALSE;
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return NS_OK;
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}
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}
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}
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*aResult = PR_TRUE;
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return NS_OK;
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}
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