284 lines
7.9 KiB
C++
284 lines
7.9 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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class nsHTMLPreElement : public nsGenericHTMLContainerElement,
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public nsIDOMHTMLPreElement
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{
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public:
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nsHTMLPreElement();
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virtual ~nsHTMLPreElement();
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMNode
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NS_FORWARD_IDOMNODE_NO_CLONENODE(nsGenericHTMLContainerElement::)
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// nsIDOMElement
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NS_FORWARD_IDOMELEMENT(nsGenericHTMLContainerElement::)
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// nsIDOMHTMLElement
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NS_FORWARD_IDOMHTMLELEMENT(nsGenericHTMLContainerElement::)
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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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NS_IMETHOD StringToAttribute(nsIAtom* aAttribute,
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const nsAReadableString& aValue,
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nsHTMLValue& aResult);
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NS_IMETHOD GetMappedAttributeImpact(const nsIAtom* aAttribute,
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PRInt32& aHint) const;
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NS_IMETHOD GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
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nsMapAttributesFunc& aMapFunc) const;
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NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const;
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};
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nsresult
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NS_NewHTMLPreElement(nsIHTMLContent** aInstancePtrResult,
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nsINodeInfo *aNodeInfo)
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{
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NS_ENSURE_ARG_POINTER(aInstancePtrResult);
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nsHTMLPreElement* it = new nsHTMLPreElement();
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult rv = it->Init(aNodeInfo);
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if (NS_FAILED(rv)) {
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delete it;
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return rv;
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}
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*aInstancePtrResult = NS_STATIC_CAST(nsIHTMLContent *, it);
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NS_ADDREF(*aInstancePtrResult);
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return NS_OK;
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}
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nsHTMLPreElement::nsHTMLPreElement()
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{
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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_INHERITED(nsHTMLPreElement, nsGenericElement);
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NS_IMPL_RELEASE_INHERITED(nsHTMLPreElement, nsGenericElement);
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NS_IMPL_HTMLCONTENT_QI(nsHTMLPreElement, nsGenericHTMLContainerElement,
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nsIDOMHTMLPreElement);
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nsresult
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nsHTMLPreElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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NS_ENSURE_ARG_POINTER(aReturn);
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*aReturn = nsnull;
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nsHTMLPreElement* it = new nsHTMLPreElement();
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsCOMPtr<nsIDOMNode> kungFuDeathGrip(it);
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nsresult rv = it->Init(mNodeInfo);
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if (NS_FAILED(rv))
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return rv;
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CopyInnerTo(this, it, aDeep);
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*aReturn = NS_STATIC_CAST(nsIDOMNode *, it);
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NS_ADDREF(*aReturn);
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return NS_OK;
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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 nsAReadableString& aValue,
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nsHTMLValue& aResult)
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{
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if (aAttribute == nsHTMLAtoms::cols) {
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if (ParseValue(aValue, 0, aResult, 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 (ParseValue(aValue, 0, aResult, 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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nsAutoString val(aValue);
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PRInt32 ec, tabstop = val.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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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.AssignWithConversion("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 (!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::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const
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{
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*aResult = sizeof(*this) + BaseSizeOf(aSizer);
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return NS_OK;
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}
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