288 lines
8.5 KiB
C++
288 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations 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
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsIDOMHTMLPreElement.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIHTMLContent.h"
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#include "nsGenericHTMLElement.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsIStyleContext.h"
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#include "nsIMutableStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIHTMLAttributes.h"
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// XXX wrap, variable, cols, tabstop
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static NS_DEFINE_IID(kIDOMHTMLPreElementIID, NS_IDOMHTMLPREELEMENT_IID);
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class nsHTMLPreElement : public nsIDOMHTMLPreElement,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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public nsIHTMLContent
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{
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public:
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nsHTMLPreElement(nsIAtom* aTag);
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virtual ~nsHTMLPreElement();
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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(mInner)
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// nsIDOMElement
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NS_IMPL_IDOMELEMENT_USING_GENERIC(mInner)
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// nsIDOMHTMLElement
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NS_IMPL_IDOMHTMLELEMENT_USING_GENERIC(mInner)
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// nsIDOMHTMLPreElement
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NS_IMETHOD GetWidth(PRInt32* aWidth);
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NS_IMETHOD SetWidth(PRInt32 aWidth);
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// nsIScriptObjectOwner
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NS_IMPL_ISCRIPTOBJECTOWNER_USING_GENERIC(mInner)
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// nsIDOMEventReceiver
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NS_IMPL_IDOMEVENTRECEIVER_USING_GENERIC(mInner)
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// nsIContent
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NS_IMPL_ICONTENT_USING_GENERIC(mInner)
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// nsIHTMLContent
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NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)
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protected:
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nsGenericHTMLContainerElement mInner;
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};
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nsresult
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NS_NewHTMLPreElement(nsIHTMLContent** aInstancePtrResult, nsIAtom* aTag)
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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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nsIHTMLContent* it = new nsHTMLPreElement(aTag);
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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(kIHTMLContentIID, (void**) aInstancePtrResult);
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}
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nsHTMLPreElement::nsHTMLPreElement(nsIAtom* aTag)
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{
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NS_INIT_REFCNT();
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mInner.Init(this, aTag);
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}
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nsHTMLPreElement::~nsHTMLPreElement()
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{
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}
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NS_IMPL_ADDREF(nsHTMLPreElement)
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NS_IMPL_RELEASE(nsHTMLPreElement)
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nsresult
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nsHTMLPreElement::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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NS_IMPL_HTML_CONTENT_QUERY_INTERFACE(aIID, aInstancePtr, this)
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if (aIID.Equals(kIDOMHTMLPreElementIID)) {
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nsIDOMHTMLPreElement* 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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nsresult
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nsHTMLPreElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLPreElement* it = new nsHTMLPreElement(mInner.mTag);
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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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mInner.CopyInnerTo(this, &it->mInner, aDeep);
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return it->QueryInterface(kIDOMNodeIID, (void**) aReturn);
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}
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NS_IMPL_INT_ATTR(nsHTMLPreElement, Width, width)
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NS_IMETHODIMP
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nsHTMLPreElement::StringToAttribute(nsIAtom* aAttribute,
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const nsString& aValue,
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nsHTMLValue& aResult)
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{
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if (aAttribute == nsHTMLAtoms::cols) {
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if (nsGenericHTMLElement::ParseValue(aValue, 0, aResult,
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eHTMLUnit_Integer)) {
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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else if (aAttribute == nsHTMLAtoms::width) {
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if (nsGenericHTMLElement::ParseValue(aValue, 0, aResult,
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eHTMLUnit_Integer)) {
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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else if (aAttribute == nsHTMLAtoms::tabstop) {
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PRInt32 ec, tabstop = aValue.ToInteger(&ec);
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if (tabstop <= 0) {
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tabstop = 8;
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}
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aResult.SetIntValue(tabstop, eHTMLUnit_Integer);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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return NS_CONTENT_ATTR_NOT_THERE;
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}
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NS_IMETHODIMP
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nsHTMLPreElement::AttributeToString(nsIAtom* aAttribute,
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const nsHTMLValue& aValue,
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nsString& aResult) const
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{
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return mInner.AttributeToString(aAttribute, aValue, aResult);
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}
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static void
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MapFontAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
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nsIMutableStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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if (nsnull != aAttributes) {
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nsHTMLValue value;
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// variable: empty
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aAttributes->GetAttribute(nsHTMLAtoms::variable, value);
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if (value.GetUnit() == eHTMLUnit_Empty) {
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nsStyleFont* font = (nsStyleFont*)
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aContext->GetMutableStyleData(eStyleStruct_Font);
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font->mFont.name = "serif";
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}
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}
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}
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static void
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MapAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
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nsIMutableStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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if (nsnull != aAttributes) {
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nsHTMLValue value;
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// wrap: empty
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aAttributes->GetAttribute(nsHTMLAtoms::wrap, value);
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if (value.GetUnit() != eHTMLUnit_Null) {
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nsStyleText* text = (nsStyleText*)
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aContext->GetMutableStyleData(eStyleStruct_Text);
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text->mWhiteSpace = NS_STYLE_WHITESPACE_MOZ_PRE_WRAP;
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}
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// cols: int (nav4 attribute)
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aAttributes->GetAttribute(nsHTMLAtoms::cols, value);
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if (value.GetUnit() == eHTMLUnit_Integer) {
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nsStylePosition* position = (nsStylePosition*)
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aContext->GetMutableStyleData(eStyleStruct_Position);
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position->mWidth.SetIntValue(value.GetIntValue(), eStyleUnit_Chars);
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// Force wrap property on since we want to wrap at a width
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// boundary not just a newline.
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nsStyleText* text = (nsStyleText*)
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aContext->GetMutableStyleData(eStyleStruct_Text);
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text->mWhiteSpace = NS_STYLE_WHITESPACE_MOZ_PRE_WRAP;
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}
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// width: int (html4 attribute == nav4 cols)
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aAttributes->GetAttribute(nsHTMLAtoms::width, value);
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if (value.GetUnit() == eHTMLUnit_Integer) {
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nsStylePosition* position = (nsStylePosition*)
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aContext->GetMutableStyleData(eStyleStruct_Position);
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position->mWidth.SetIntValue(value.GetIntValue(), eStyleUnit_Chars);
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// Force wrap property on since we want to wrap at a width
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// boundary not just a newline.
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nsStyleText* text = (nsStyleText*)
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aContext->GetMutableStyleData(eStyleStruct_Text);
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text->mWhiteSpace = NS_STYLE_WHITESPACE_MOZ_PRE_WRAP;
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}
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// tabstop: int
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aAttributes->GetAttribute(nsHTMLAtoms::tabstop, value);
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if (value.GetUnit() == eHTMLUnit_Integer) {
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// XXX set
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}
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}
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext,
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aPresContext);
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}
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NS_IMETHODIMP
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nsHTMLPreElement::GetMappedAttributeImpact(const nsIAtom* aAttribute,
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PRInt32& aHint) const
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{
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if ((aAttribute == nsHTMLAtoms::variable) ||
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(aAttribute == nsHTMLAtoms::wrap) ||
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(aAttribute == nsHTMLAtoms::cols) ||
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(aAttribute == nsHTMLAtoms::width) ||
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(aAttribute == nsHTMLAtoms::tabstop)) {
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aHint = NS_STYLE_HINT_REFLOW;
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}
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else if (! nsGenericHTMLElement::GetCommonMappedAttributesImpact(aAttribute, aHint)) {
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aHint = NS_STYLE_HINT_CONTENT;
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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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nsHTMLPreElement::GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
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nsMapAttributesFunc& aMapFunc) const
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{
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aFontMapFunc = &MapFontAttributesInto;
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aMapFunc = &MapAttributesInto;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLPreElement::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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NS_IMETHODIMP
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nsHTMLPreElement::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const
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{
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return mInner.SizeOf(aSizer, aResult, sizeof(*this));
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}
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