391 lines
12 KiB
C++
391 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 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 "nsIDOMHTMLAnchorElement.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 "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsINameSpaceManager.h"
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#include "nsIURL.h"
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#include "nsIFocusableContent.h"
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#include "nsIEventStateManager.h"
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#include "nsDOMEvent.h"
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// XXX suppress
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// XXX either suppress is handled in the event code below OR we need a
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// custom frame
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static NS_DEFINE_IID(kIDOMHTMLAnchorElementIID, NS_IDOMHTMLANCHORELEMENT_IID);
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static NS_DEFINE_IID(kIFocusableContentIID, NS_IFOCUSABLECONTENT_IID);
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class nsHTMLAnchorElement : public nsIDOMHTMLAnchorElement,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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public nsIHTMLContent,
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public nsIFocusableContent
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{
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public:
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nsHTMLAnchorElement(nsIAtom* aTag);
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virtual ~nsHTMLAnchorElement();
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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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// nsIDOMHTMLAnchorElement
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NS_IMETHOD GetAccessKey(nsString& aAccessKey);
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NS_IMETHOD SetAccessKey(const nsString& aAccessKey);
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NS_IMETHOD GetCharset(nsString& aCharset);
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NS_IMETHOD SetCharset(const nsString& aCharset);
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NS_IMETHOD GetCoords(nsString& aCoords);
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NS_IMETHOD SetCoords(const nsString& aCoords);
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NS_IMETHOD GetHref(nsString& aHref);
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NS_IMETHOD SetHref(const nsString& aHref);
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NS_IMETHOD GetHreflang(nsString& aHreflang);
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NS_IMETHOD SetHreflang(const nsString& aHreflang);
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NS_IMETHOD GetName(nsString& aName);
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NS_IMETHOD SetName(const nsString& aName);
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NS_IMETHOD GetRel(nsString& aRel);
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NS_IMETHOD SetRel(const nsString& aRel);
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NS_IMETHOD GetRev(nsString& aRev);
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NS_IMETHOD SetRev(const nsString& aRev);
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NS_IMETHOD GetShape(nsString& aShape);
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NS_IMETHOD SetShape(const nsString& aShape);
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NS_IMETHOD GetTabIndex(PRInt32* aTabIndex);
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NS_IMETHOD SetTabIndex(PRInt32 aTabIndex);
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NS_IMETHOD GetTarget(nsString& aTarget);
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NS_IMETHOD SetTarget(const nsString& aTarget);
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NS_IMETHOD GetType(nsString& aType);
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NS_IMETHOD SetType(const nsString& aType);
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NS_IMETHOD Blur();
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NS_IMETHOD Focus();
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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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// nsIFocusableContent
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NS_IMETHOD SetFocus(nsIPresContext* aPresContext);
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NS_IMETHOD RemoveFocus(nsIPresContext* aPresContext);
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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_NewHTMLAnchorElement(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 nsHTMLAnchorElement(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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nsHTMLAnchorElement::nsHTMLAnchorElement(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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nsHTMLAnchorElement::~nsHTMLAnchorElement()
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{
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}
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NS_IMPL_ADDREF(nsHTMLAnchorElement)
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NS_IMPL_RELEASE(nsHTMLAnchorElement)
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nsresult
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nsHTMLAnchorElement::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(kIDOMHTMLAnchorElementIID)) {
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nsIDOMHTMLAnchorElement* tmp = this;
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*aInstancePtr = (void*) tmp;
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mRefCnt++;
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return NS_OK;
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}
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else if (aIID.Equals(kIFocusableContentIID)) {
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*aInstancePtr = (void*)(nsIFocusableContent*) this;
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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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nsHTMLAnchorElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLAnchorElement* it = new nsHTMLAnchorElement(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_STRING_ATTR(nsHTMLAnchorElement, AccessKey, accesskey)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Charset, charset)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Coords, coords)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Href, href)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Hreflang, hreflang)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Name, name)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Rel, rel)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Rev, rev)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Shape, shape)
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NS_IMPL_INT_ATTR(nsHTMLAnchorElement, TabIndex, tabindex)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Target, target)
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NS_IMPL_STRING_ATTR(nsHTMLAnchorElement, Type, type)
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NS_IMETHODIMP
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nsHTMLAnchorElement::Blur()
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{
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// XXX write me
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAnchorElement::Focus()
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{
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// XXX write me
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAnchorElement::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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// XXX write me
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAnchorElement::RemoveFocus(nsIPresContext* aPresContext)
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{
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// XXX write me
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAnchorElement::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::tabindex) {
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nsGenericHTMLElement::ParseValue(aValue, 0, 32767, 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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if (aAttribute == nsHTMLAtoms::href) {
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nsAutoString href(aValue);
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href.StripWhitespace();
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aResult.SetStringValue(href);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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if (aAttribute == nsHTMLAtoms::suppress) {
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if (aValue.EqualsIgnoreCase("true")) {
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aResult.SetEmptyValue();
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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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nsHTMLAnchorElement::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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MapAttributesInto(nsIHTMLAttributes* aAttributes,
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nsIStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext, aPresContext);
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}
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NS_IMETHODIMP
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nsHTMLAnchorElement::GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
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nsMapAttributesFunc& aMapFunc) const
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{
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aFontMapFunc = nsnull;
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aMapFunc = &MapAttributesInto;
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return NS_OK;
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}
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// XXX support suppress in here
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NS_IMETHODIMP
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nsHTMLAnchorElement::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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// Try script event handlers first
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nsresult ret = mInner.HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
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aFlags, aEventStatus);
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if ((NS_OK == ret) && (nsEventStatus_eIgnore == aEventStatus)) {
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// If this anchor element has an HREF then it is sensitive to
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// mouse events (otherwise ignore them).
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nsAutoString href;
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nsresult result = GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::href, href);
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if (NS_CONTENT_ATTR_HAS_VALUE == result) {
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switch (aEvent->message) {
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case NS_MOUSE_LEFT_BUTTON_DOWN:
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{
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nsIEventStateManager *stateManager;
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if (NS_OK == aPresContext.GetEventStateManager(&stateManager)) {
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stateManager->SetContentState(this, NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_FOCUS);
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NS_RELEASE(stateManager);
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}
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aEventStatus = nsEventStatus_eConsumeNoDefault;
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}
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break;
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case NS_MOUSE_LEFT_CLICK:
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{
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if (nsEventStatus_eConsumeNoDefault != aEventStatus) {
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nsAutoString target;
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nsIURL* baseURL = nsnull;
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GetBaseURL(baseURL);
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GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::target, target);
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if (target.Length() == 0) {
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GetBaseTarget(target);
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}
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mInner.TriggerLink(aPresContext, eLinkVerb_Replace,
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baseURL, href, target, PR_TRUE);
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NS_IF_RELEASE(baseURL);
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aEventStatus = nsEventStatus_eConsumeDoDefault;
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}
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}
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break;
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case NS_MOUSE_RIGHT_BUTTON_DOWN:
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// XXX Bring up a contextual menu provided by the application
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break;
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case NS_MOUSE_ENTER:
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{
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nsIEventStateManager *stateManager;
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if (NS_OK == aPresContext.GetEventStateManager(&stateManager)) {
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stateManager->SetContentState(this, NS_EVENT_STATE_HOVER);
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NS_RELEASE(stateManager);
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}
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nsAutoString target;
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nsIURL* baseURL = nsnull;
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GetBaseURL(baseURL);
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GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::target, target);
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if (target.Length() == 0) {
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GetBaseTarget(target);
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}
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mInner.TriggerLink(aPresContext, eLinkVerb_Replace,
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baseURL, href, target, PR_FALSE);
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NS_IF_RELEASE(baseURL);
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aEventStatus = nsEventStatus_eConsumeNoDefault;
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}
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break;
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case NS_MOUSE_EXIT:
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{
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nsIEventStateManager *stateManager;
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if (NS_OK == aPresContext.GetEventStateManager(&stateManager)) {
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stateManager->SetContentState(nsnull, NS_EVENT_STATE_HOVER);
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NS_RELEASE(stateManager);
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}
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nsAutoString empty;
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mInner.TriggerLink(aPresContext, eLinkVerb_Replace, nsnull, empty, empty, PR_FALSE);
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aEventStatus = nsEventStatus_eConsumeNoDefault;
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}
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break;
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default:
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break;
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}
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}
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}
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return ret;
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}
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NS_IMETHODIMP
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nsHTMLAnchorElement::GetStyleHintForAttributeChange(
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const nsIAtom* aAttribute,
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PRInt32 *aHint) const
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{
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if ((aAttribute == nsHTMLAtoms::charset) ||
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(aAttribute == nsHTMLAtoms::coords) ||
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(aAttribute == nsHTMLAtoms::href) ||
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(aAttribute == nsHTMLAtoms::hreflang) ||
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(aAttribute == nsHTMLAtoms::name) ||
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(aAttribute == nsHTMLAtoms::rel) ||
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(aAttribute == nsHTMLAtoms::rev) ||
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(aAttribute == nsHTMLAtoms::shape) ||
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(aAttribute == nsHTMLAtoms::tabindex) ||
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(aAttribute == nsHTMLAtoms::target) ||
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(aAttribute == nsHTMLAtoms::type)) {
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*aHint = NS_STYLE_HINT_CONTENT;
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}
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else if (aAttribute == nsHTMLAtoms::accesskey) {
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// XXX Notification needs to happen for this attribute
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*aHint = NS_STYLE_HINT_CONTENT;
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}
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else {
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nsGenericHTMLElement::GetStyleHintForCommonAttributes(this, aAttribute, aHint);
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}
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return NS_OK;
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}
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