503 lines
12 KiB
C++
503 lines
12 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 "nsIDOMHTMLAreaElement.h"
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#include "nsIDOMNSHTMLAreaElement.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 "nsILink.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 "nsIEventStateManager.h"
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#include "nsIURL.h"
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#include "nsNetUtil.h"
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#include "nsHTMLUtils.h"
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class nsHTMLAreaElement : public nsGenericHTMLLeafElement,
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public nsIDOMHTMLAreaElement,
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public nsIDOMNSHTMLAreaElement,
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public nsILink
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{
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public:
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nsHTMLAreaElement();
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virtual ~nsHTMLAreaElement();
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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(nsGenericHTMLLeafElement::)
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// nsIDOMElement
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NS_FORWARD_IDOMELEMENT(nsGenericHTMLLeafElement::)
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// nsIDOMHTMLElement
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NS_FORWARD_IDOMHTMLELEMENT(nsGenericHTMLLeafElement::)
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// nsIDOMHTMLAreaElement
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NS_DECL_IDOMHTMLAREAELEMENT
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// nsIDOMNSHTMLAreaElement
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NS_DECL_IDOMNSHTMLAREAELEMENT
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// nsILink
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NS_IMETHOD GetLinkState(nsLinkState &aState);
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NS_IMETHOD SetLinkState(nsLinkState aState);
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NS_IMETHOD GetHrefCString(char* &aBuf);
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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 HandleDOMEvent(nsIPresContext* aPresContext, nsEvent* aEvent,
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nsIDOMEvent** aDOMEvent, PRUint32 aFlags,
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nsEventStatus* aEventStatus);
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NS_IMETHOD SetFocus(nsIPresContext* aPresContext);
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NS_IMETHOD RemoveFocus(nsIPresContext* aPresContext);
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NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const;
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protected:
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// The cached visited state
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nsLinkState mLinkState;
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};
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nsresult
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NS_NewHTMLAreaElement(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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nsHTMLAreaElement* it = new nsHTMLAreaElement();
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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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nsHTMLAreaElement::nsHTMLAreaElement()
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: mLinkState(eLinkState_Unknown)
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{
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nsHTMLUtils::AddRef(); // for GetHrefCString
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}
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nsHTMLAreaElement::~nsHTMLAreaElement()
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{
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nsHTMLUtils::Release(); // for GetHrefCString
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}
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NS_IMPL_ADDREF_INHERITED(nsHTMLAreaElement, nsGenericElement)
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NS_IMPL_RELEASE_INHERITED(nsHTMLAreaElement, nsGenericElement)
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NS_IMPL_HTMLCONTENT_QI3(nsHTMLAreaElement, nsGenericHTMLLeafElement,
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nsIDOMHTMLAreaElement, nsIDOMNSHTMLAreaElement,
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nsILink)
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nsresult
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nsHTMLAreaElement::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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nsHTMLAreaElement* it = new nsHTMLAreaElement();
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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_STRING_ATTR(nsHTMLAreaElement, AccessKey, accesskey)
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NS_IMPL_STRING_ATTR(nsHTMLAreaElement, Alt, alt)
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NS_IMPL_STRING_ATTR(nsHTMLAreaElement, Coords, coords)
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NS_IMPL_BOOL_ATTR(nsHTMLAreaElement, NoHref, nohref)
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NS_IMPL_STRING_ATTR(nsHTMLAreaElement, Shape, shape)
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NS_IMPL_INT_ATTR(nsHTMLAreaElement, TabIndex, tabindex)
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NS_IMPL_STRING_ATTR(nsHTMLAreaElement, Target, target)
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NS_IMETHODIMP
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nsHTMLAreaElement::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::nohref) {
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aResult.SetEmptyValue();
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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else if (aAttribute == nsHTMLAtoms::tabindex) {
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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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return NS_CONTENT_ATTR_NOT_THERE;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::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 HandleDOMEventForAnchors(this, aPresContext, aEvent, aDOMEvent,
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aFlags, aEventStatus);
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::SetFocus(nsIPresContext* aPresContext)
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{
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nsIEventStateManager* esm;
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if (NS_OK == aPresContext->GetEventStateManager(&esm)) {
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esm->SetContentState(this, NS_EVENT_STATE_FOCUS);
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NS_RELEASE(esm);
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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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nsHTMLAreaElement::RemoveFocus(nsIPresContext* aPresContext)
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{
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nsIEventStateManager* esm;
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if (NS_OK == aPresContext->GetEventStateManager(&esm)) {
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esm->SetContentState(nsnull, NS_EVENT_STATE_FOCUS);
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NS_RELEASE(esm);
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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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nsHTMLAreaElement::GetHref(nsAWritableString& aValue)
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{
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char *buf;
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nsresult rv = GetHrefCString(buf);
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if (NS_FAILED(rv)) return rv;
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if (buf) {
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aValue.Assign(NS_ConvertASCIItoUCS2(buf));
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nsCRT::free(buf);
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}
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// NS_IMPL_STRING_ATTR does nothing where we have (buf == null)
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::SetHref(const nsAReadableString& aValue)
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{
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// Clobber our "cache", so we'll recompute it the next time somebody
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// asks for it.
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mLinkState = eLinkState_Unknown;
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return NS_STATIC_CAST(nsIContent *, this)->SetAttribute(kNameSpaceID_HTML,
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nsHTMLAtoms::href,
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aValue, PR_TRUE);
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::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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NS_IMETHODIMP
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nsHTMLAreaElement::GetProtocol(nsAWritableString& aProtocol)
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{
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nsAutoString href;
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nsIURI *url;
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nsresult result = NS_OK;
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result = GetHref(href);
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if (NS_OK == result) {
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result = NS_NewURI(&url, href);
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if (NS_OK == result) {
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char* protocol;
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result = url->GetScheme(&protocol);
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if (result == NS_OK) {
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aProtocol.Assign(NS_ConvertASCIItoUCS2(protocol));
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aProtocol.Append(PRUnichar(':'));
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nsCRT::free(protocol);
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}
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NS_RELEASE(url);
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}
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}
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return result;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::GetHost(nsAWritableString& aHost)
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{
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nsAutoString href;
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nsIURI *url;
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nsresult result = NS_OK;
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result = GetHref(href);
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if (NS_OK == result) {
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result = NS_NewURI(&url, href);
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if (NS_OK == result) {
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char* host;
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result = url->GetHost(&host);
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if (result == NS_OK) {
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aHost.Assign(NS_ConvertASCIItoUCS2(host));
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nsCRT::free(host);
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PRInt32 port;
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(void)url->GetPort(&port);
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if (-1 != port) {
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aHost.Append(PRUnichar(':'));
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nsAutoString portStr;
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portStr.AppendInt(port, 10);
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aHost.Append(portStr);
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}
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}
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NS_RELEASE(url);
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}
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}
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return result;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::GetHostname(nsAWritableString& aHostname)
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{
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nsAutoString href;
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nsIURI *url;
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nsresult result = NS_OK;
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result = GetHref(href);
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if (NS_OK == result) {
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result = NS_NewURI(&url, href);
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if (NS_OK == result) {
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char* host;
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result = url->GetHost(&host);
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if (result == NS_OK) {
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aHostname.Assign(NS_ConvertASCIItoUCS2(host));
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nsCRT::free(host);
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}
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NS_RELEASE(url);
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}
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}
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return result;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::GetPathname(nsAWritableString& aPathname)
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{
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nsAutoString href;
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nsCOMPtr<nsIURI> uri;
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nsresult result = NS_OK;
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aPathname.Truncate();
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result = GetHref(href);
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NS_ENSURE_SUCCESS(result, result);
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result = NS_NewURI(getter_AddRefs(uri), href);
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NS_ENSURE_SUCCESS(result, result);
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nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
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NS_ENSURE_TRUE(url, NS_OK);
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char* file;
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result = url->GetFilePath(&file);
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NS_ENSURE_SUCCESS(result, result);
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aPathname.Assign(NS_ConvertASCIItoUCS2(file));
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nsCRT::free(file);
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return result;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::GetSearch(nsAWritableString& aSearch)
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{
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nsAutoString href;
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nsCOMPtr<nsIURI> uri;
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nsresult result = NS_OK;
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result = GetHref(href);
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if (NS_SUCCEEDED(result)) {
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result = NS_NewURI(getter_AddRefs(uri), href);
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if (NS_SUCCEEDED(result)) {
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char *search;
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nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
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if (url) {
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result = url->GetEscapedQuery(&search);
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}
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if (NS_SUCCEEDED(result) && search && *search) {
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aSearch.Assign(PRUnichar('?'));
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aSearch.Append(NS_ConvertASCIItoUCS2(search));
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nsCRT::free(search);
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}
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else {
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aSearch.SetLength(0);
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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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NS_IMETHODIMP
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nsHTMLAreaElement::GetPort(nsAWritableString& aPort)
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{
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nsAutoString href;
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nsCOMPtr<nsIURI> url;
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nsresult result = NS_OK;
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result = GetHref(href);
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if (NS_SUCCEEDED(result)) {
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result = NS_NewURI(getter_AddRefs(url), href);
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if (NS_SUCCEEDED(result)) {
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aPort.SetLength(0);
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PRInt32 port;
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url->GetPort(&port);
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if (-1 != port) {
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nsAutoString portStr;
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portStr.AppendInt(port, 10);
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aPort.Append(portStr);
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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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NS_IMETHODIMP
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nsHTMLAreaElement::GetHash(nsAWritableString& aHash)
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{
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nsAutoString href;
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nsCOMPtr<nsIURI> uri;
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nsresult result = NS_OK;
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result = GetHref(href);
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if (NS_OK == result) {
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result = NS_NewURI(getter_AddRefs(uri), href);
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if (NS_SUCCEEDED(result)) {
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char *ref;
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nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
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if (url) {
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result = url->GetRef(&ref);
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}
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if (NS_SUCCEEDED(result) && ref && *ref) {
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aHash.Assign(PRUnichar('#'));
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aHash.Append(NS_ConvertASCIItoUCS2(ref));
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nsCRT::free(ref);
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}
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else {
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aHash.SetLength(0);
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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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NS_IMETHODIMP
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nsHTMLAreaElement::GetLinkState(nsLinkState &aState)
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{
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aState = mLinkState;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::SetLinkState(nsLinkState aState)
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{
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mLinkState = aState;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAreaElement::GetHrefCString(char* &aBuf)
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{
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// Get href= attribute (relative URL).
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nsAutoString relURLSpec;
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if (NS_CONTENT_ATTR_HAS_VALUE ==
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NS_STATIC_CAST(nsIContent *, this)->GetAttribute(kNameSpaceID_HTML,
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nsHTMLAtoms::href,
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relURLSpec)) {
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// Clean up any leading or trailing whitespace
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relURLSpec.Trim(" \t\n\r");
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// Get base URL.
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nsCOMPtr<nsIURI> baseURL;
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GetBaseURL(*getter_AddRefs(baseURL));
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if (baseURL) {
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// Get absolute URL.
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NS_MakeAbsoluteURIWithCharset(&aBuf, relURLSpec, mDocument, baseURL,
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nsHTMLUtils::IOService, nsHTMLUtils::CharsetMgr);
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}
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else {
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// Absolute URL is same as relative URL.
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aBuf = relURLSpec.ToNewUTF8String();
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}
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}
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else {
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// Absolute URL is empty because we have no HREF.
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aBuf = nsnull;
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}
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return NS_OK;
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}
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