f1462f4d55
Adding new functionality through nsEventStateManager (cursor change, enter/exit events, tab navig) git-svn-id: svn://10.0.0.236/trunk@14864 18797224-902f-48f8-a5cc-f745e15eee43
425 lines
12 KiB
C++
425 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 "nsIDOMHTMLButtonElement.h"
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#include "nsIDOMNSHTMLButtonElement.h"
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#include "nsIDOMHTMLFormElement.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 "nsIFormControl.h"
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#include "nsIForm.h"
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#include "nsIEventStateManager.h"
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#include "nsDOMEvent.h"
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static NS_DEFINE_IID(kIDOMHTMLButtonElementIID, NS_IDOMHTMLBUTTONELEMENT_IID);
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class nsHTMLButtonElement : public nsIDOMHTMLButtonElement,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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public nsIHTMLContent,
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public nsIFormControl
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{
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public:
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nsHTMLButtonElement(nsIAtom* aTag);
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~nsHTMLButtonElement();
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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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// nsIDOMHTMLButtonElement
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NS_IMETHOD GetForm(nsIDOMHTMLFormElement** aForm);
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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 GetDisabled(PRBool* aDisabled);
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NS_IMETHOD SetDisabled(PRBool aDisabled);
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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 GetTabIndex(PRInt32* aTabIndex);
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NS_IMETHOD SetTabIndex(PRInt32 aTabIndex);
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NS_IMETHOD GetType(nsString& aType);
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NS_IMETHOD GetValue(nsString& aValue);
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NS_IMETHOD SetValue(const nsString& aValue);
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// nsIDOMHTMLButtonElement
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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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// nsIFormControl
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NS_IMETHOD SetForm(nsIDOMHTMLFormElement* aForm);
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NS_IMETHOD GetType(PRInt32* aType);
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NS_IMETHOD SetWidget(nsIWidget* aWidget) { return NS_OK; };
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NS_IMETHOD Init() { return NS_OK; }
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protected:
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nsGenericHTMLContainerElement mInner;
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nsIForm* mForm;
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PRInt32 mType;
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};
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static NS_DEFINE_IID(kIDOMHTMLFormElementIID, NS_IDOMHTMLFORMELEMENT_IID);
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static NS_DEFINE_IID(kIFormIID, NS_IFORM_IID);
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static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
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// Construction, destruction
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nsresult
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NS_NewHTMLButtonElement(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 nsHTMLButtonElement(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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nsHTMLButtonElement::nsHTMLButtonElement(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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mForm = nsnull;
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mType = NS_FORM_BUTTON_BUTTON; // default
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}
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nsHTMLButtonElement::~nsHTMLButtonElement()
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{
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if (nsnull != mForm) {
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// prevent mForm from decrementing its ref count on us
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mForm->RemoveElement(this, PR_FALSE);
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NS_RELEASE(mForm);
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}
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}
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// nsISupports
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NS_IMETHODIMP_(nsrefcnt)
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nsHTMLButtonElement::AddRef(void)
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{
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PRInt32 refCnt = mRefCnt; // debugging
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return ++mRefCnt;
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}
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nsresult
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nsHTMLButtonElement::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(kIDOMHTMLButtonElementIID)) {
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*aInstancePtr = (void*)(nsIDOMHTMLButtonElement*)this;
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mRefCnt++;
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return NS_OK;
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}
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else if (aIID.Equals(kIFormControlIID)) {
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*aInstancePtr = (void*)(nsIFormControl*) 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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NS_IMETHODIMP_(nsrefcnt)
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nsHTMLButtonElement::Release()
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{
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--mRefCnt;
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if (mRefCnt <= 0) {
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delete this;
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return 0;
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} else if ((1 == mRefCnt) && mForm) {
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mRefCnt = 0;
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delete this;
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return 0;
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} else {
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return mRefCnt;
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}
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}
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// nsIDOMHTMLButtonElement
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nsresult
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nsHTMLButtonElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLButtonElement* it = new nsHTMLButtonElement(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);
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return it->QueryInterface(kIDOMNodeIID, (void**) aReturn);
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}
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NS_IMETHODIMP
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nsHTMLButtonElement::GetForm(nsIDOMHTMLFormElement** aForm)
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{
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nsresult result = NS_OK;
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*aForm = nsnull;
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if (nsnull != mForm) {
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nsIDOMHTMLFormElement* formElem = nsnull;
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result = mForm->QueryInterface(kIDOMHTMLFormElementIID, (void**)&formElem);
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if (NS_OK == result) {
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*aForm = formElem;
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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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nsHTMLButtonElement::GetType(nsString& aType)
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{
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aType.SetString("button");
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return NS_OK;
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}
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NS_IMPL_STRING_ATTR(nsHTMLButtonElement, AccessKey, accesskey)
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NS_IMPL_BOOL_ATTR(nsHTMLButtonElement, Disabled, disabled)
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NS_IMPL_STRING_ATTR(nsHTMLButtonElement, Name, name)
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NS_IMPL_INT_ATTR(nsHTMLButtonElement, TabIndex, tabindex)
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NS_IMPL_STRING_ATTR(nsHTMLButtonElement, Value, value)
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NS_IMETHODIMP
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nsHTMLButtonElement::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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nsHTMLButtonElement::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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static nsGenericHTMLElement::EnumTable kButtonTypeTable[] = {
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{ "button", NS_FORM_BUTTON_BUTTON },
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{ "reset", NS_FORM_BUTTON_RESET },
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{ "submit", NS_FORM_BUTTON_SUBMIT },
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{ 0 }
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};
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NS_IMETHODIMP
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nsHTMLButtonElement::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::type) {
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nsGenericHTMLElement::EnumTable *table = kButtonTypeTable;
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while (nsnull != table->tag) {
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if (aValue.EqualsIgnoreCase(table->tag)) {
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aResult.SetIntValue(table->value, eHTMLUnit_Enumerated);
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mType = table->value;
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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table++;
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}
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}
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else if (aAttribute == nsHTMLAtoms::disabled) {
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aResult.SetEmptyValue();
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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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nsHTMLButtonElement::AttributeToString(nsIAtom* aAttribute,
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nsHTMLValue& aValue,
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nsString& aResult) const
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{
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if (aAttribute == nsHTMLAtoms::type) {
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if (eHTMLUnit_Enumerated == aValue.GetUnit()) {
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nsGenericHTMLElement::EnumValueToString(aValue, kButtonTypeTable, aResult);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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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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nsHTMLButtonElement::GetAttributeMappingFunction(nsMapAttributesFunc& aMapFunc) const
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{
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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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nsHTMLButtonElement::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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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->SetActiveLink(this);
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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_BUTTON_UP:
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{
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nsIEventStateManager *stateManager;
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nsIContent *activeLink = nsnull;
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if (NS_OK == aPresContext.GetEventStateManager(&stateManager)) {
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//stateManager->GetActiveLink(&activeLink);
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NS_RELEASE(stateManager);
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}
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if (activeLink == this) {
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nsEventStatus status;
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nsMouseEvent event;
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event.eventStructType = NS_MOUSE_EVENT;
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event.message = NS_MOUSE_LEFT_CLICK;
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HandleDOMEvent(aPresContext, &event, nsnull, DOM_EVENT_INIT, status);
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if (nsEventStatus_eConsumeNoDefault != status) {
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nsAutoString base, href, target;
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GetAttribute(nsString(NS_HTML_BASE_HREF), base);
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GetAttribute(nsString("href"), href);
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GetAttribute(nsString("target"), target);
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if (target.Length() == 0) {
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GetAttribute(nsString(NS_HTML_BASE_TARGET), target);
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}
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mInner.TriggerLink(aPresContext, eLinkVerb_Replace, base, href, target, PR_TRUE);
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aEventStatus = nsEventStatus_eConsumeNoDefault;
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}
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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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//mouse enter doesn't work yet. Use move until then.
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{
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nsAutoString base, href, target;
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GetAttribute(nsString(NS_HTML_BASE_HREF), base);
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GetAttribute(nsString("href"), href);
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GetAttribute(nsString("target"), target);
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if (target.Length() == 0) {
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GetAttribute(nsString(NS_HTML_BASE_TARGET), target);
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}
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mInner.TriggerLink(aPresContext, eLinkVerb_Replace, base, href, target, PR_FALSE);
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aEventStatus = nsEventStatus_eConsumeDoDefault;
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}
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break;
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// XXX this doesn't seem to do anything yet
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case NS_MOUSE_EXIT:
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{
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nsAutoString empty;
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mInner.TriggerLink(aPresContext, eLinkVerb_Replace, empty, empty, empty, PR_FALSE);
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aEventStatus = nsEventStatus_eConsumeDoDefault;
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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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return ret;
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}
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NS_IMETHODIMP
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nsHTMLButtonElement::GetType(PRInt32* aType)
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{
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if (aType) {
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*aType = mType;
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return NS_OK;
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} else {
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return NS_FORM_NOTOK;
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}
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}
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// An important assumption is that if aForm is null, the previous mForm will not be released
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// This allows nsHTMLFormElement to deal with circular references.
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NS_IMETHODIMP
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nsHTMLButtonElement::SetForm(nsIDOMHTMLFormElement* aForm)
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{
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nsresult result = NS_OK;
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if (nsnull == aForm) {
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mForm = nsnull;
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return NS_OK;
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} else {
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NS_IF_RELEASE(mForm);
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nsIFormControl* formControl = nsnull;
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result = QueryInterface(kIFormControlIID, (void**)&formControl);
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if ((NS_OK == result) && formControl) {
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result = aForm->QueryInterface(kIFormIID, (void**)&mForm); // keep the ref
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if ((NS_OK == result) && mForm) {
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mForm->AddElement(formControl);
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}
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NS_RELEASE(formControl);
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}
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}
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return result;
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}
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