497 lines
14 KiB
C++
497 lines
14 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 "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 "nsIMutableStyleContext.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 "nsIURL.h"
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#include "nsIFormControlFrame.h"
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#include "nsIEventStateManager.h"
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#include "nsIDOMEvent.h"
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#include "nsISizeOfHandler.h"
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#include "nsIDocument.h"
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class nsHTMLButtonElement : public nsGenericHTMLContainerFormElement,
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public nsIDOMHTMLButtonElement,
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public nsIDOMNSHTMLButtonElement
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{
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public:
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nsHTMLButtonElement();
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virtual ~nsHTMLButtonElement();
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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(nsGenericHTMLContainerFormElement::)
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// nsIDOMElement
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NS_FORWARD_IDOMELEMENT(nsGenericHTMLContainerFormElement::)
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// nsIDOMHTMLElement
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NS_FORWARD_IDOMHTMLELEMENT(nsGenericHTMLContainerElement::)
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// nsIDOMHTMLButtonElement
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NS_DECL_IDOMHTMLBUTTONELEMENT
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// nsIDOMNSHTMLButtonElement
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NS_DECL_IDOMNSHTMLBUTTONELEMENT
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// overrided nsIFormControl method
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NS_IMETHOD GetType(PRInt32* aType);
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// nsIContent overrides...
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NS_IMETHOD GetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
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nsAWritableString& aResult) const;
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NS_IMETHOD SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
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const nsAReadableString& aValue, PRBool aNotify);
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NS_IMETHOD SetFocus(nsIPresContext* aPresContext);
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NS_IMETHOD RemoveFocus(nsIPresContext* aPresContext);
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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 AttributeToString(nsIAtom* aAttribute,
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const nsHTMLValue& aValue,
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nsAWritableString& aResult) const;
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NS_IMETHOD 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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NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const;
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protected:
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PRInt8 mType;
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};
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// Construction, destruction
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nsresult
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NS_NewHTMLButtonElement(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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nsHTMLButtonElement* it = new nsHTMLButtonElement();
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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 = NS_STATIC_CAST(nsGenericElement *, 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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nsHTMLButtonElement::nsHTMLButtonElement()
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{
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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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// Null out form's pointer to us - no ref counting here!
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SetForm(nsnull);
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}
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// nsISupports
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NS_IMPL_ADDREF_INHERITED(nsHTMLButtonElement, nsGenericElement);
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NS_IMPL_RELEASE_INHERITED(nsHTMLButtonElement, nsGenericElement);
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NS_IMPL_HTMLCONTENT_QI(nsHTMLButtonElement, nsGenericHTMLContainerFormElement,
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nsIDOMHTMLButtonElement);
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NS_IMETHODIMP
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nsHTMLButtonElement::GetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
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nsAWritableString& aResult) const
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{
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if (aName == nsHTMLAtoms::disabled) {
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nsresult rv = nsGenericHTMLContainerFormElement::GetAttribute(kNameSpaceID_None, nsHTMLAtoms::disabled, aResult);
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if (rv == NS_CONTENT_ATTR_NOT_THERE) {
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aResult.Assign(NS_LITERAL_STRING("false"));
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} else {
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aResult.Assign(NS_LITERAL_STRING("true"));
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}
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return NS_OK;
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}
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return nsGenericHTMLContainerFormElement::GetAttribute(aNameSpaceID, aName,
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aResult);
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}
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NS_IMETHODIMP
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nsHTMLButtonElement::SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
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const nsAReadableString& aValue,
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PRBool aNotify)
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{
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nsAutoString value(aValue);
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if (aName == nsHTMLAtoms::disabled &&
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value.EqualsWithConversion("false", PR_TRUE)) {
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return UnsetAttribute(aNameSpaceID, aName, aNotify);
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}
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return nsGenericHTMLContainerFormElement::SetAttribute(aNameSpaceID, aName,
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aValue, aNotify);
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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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NS_ENSURE_ARG_POINTER(aReturn);
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*aReturn = nsnull;
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nsHTMLButtonElement* it = new nsHTMLButtonElement();
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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 = NS_STATIC_CAST(nsGenericElement *, 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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// nsIContent
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NS_IMETHODIMP
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nsHTMLButtonElement::GetForm(nsIDOMHTMLFormElement** aForm)
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{
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return nsGenericHTMLContainerFormElement::GetForm(aForm);
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}
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NS_IMETHODIMP
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nsHTMLButtonElement::GetType(nsAWritableString& aType)
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{
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return AttributeToString(nsHTMLAtoms::type,
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nsHTMLValue(mType, eHTMLUnit_Enumerated),
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aType);
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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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nsCOMPtr<nsIPresContext> presContext;
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GetPresContext(this, getter_AddRefs(presContext));
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return RemoveFocus(presContext);
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}
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NS_IMETHODIMP
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nsHTMLButtonElement::Focus()
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{
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nsCOMPtr<nsIPresContext> presContext;
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GetPresContext(this, getter_AddRefs(presContext));
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return SetFocus(presContext);
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}
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NS_IMETHODIMP
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nsHTMLButtonElement::SetFocus(nsIPresContext* aPresContext)
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{
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// first see if we are disabled or not. If disabled then do nothing.
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nsAutoString disabled;
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if (NS_CONTENT_ATTR_HAS_VALUE == GetAttribute(kNameSpaceID_HTML,
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nsHTMLAtoms::disabled,
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disabled)) {
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return NS_OK;
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}
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nsCOMPtr<nsIEventStateManager> esm;
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if (NS_OK == aPresContext->GetEventStateManager(getter_AddRefs(esm))) {
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esm->SetContentState(this, NS_EVENT_STATE_FOCUS);
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}
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nsIFormControlFrame* formControlFrame = nsnull;
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nsresult rv = GetPrimaryFrame(this, formControlFrame);
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if (NS_SUCCEEDED(rv)) {
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formControlFrame->SetFocus(PR_TRUE, PR_TRUE);
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formControlFrame->ScrollIntoView(aPresContext);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsHTMLButtonElement::RemoveFocus(nsIPresContext* aPresContext)
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{
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// If we are disabled, we probably shouldn't have focus in the
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// first place, so allow it to be removed.
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nsresult rv = NS_OK;
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nsIFormControlFrame* formControlFrame = nsnull;
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rv = GetPrimaryFrame(this, formControlFrame);
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if (NS_SUCCEEDED(rv)) {
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formControlFrame->SetFocus(PR_FALSE, PR_FALSE);
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}
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nsCOMPtr<nsIEventStateManager> esm;
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if (NS_OK == aPresContext->GetEventStateManager(getter_AddRefs(esm))) {
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nsCOMPtr<nsIDocument> doc;
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GetDocument(*getter_AddRefs(doc));
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if (!doc)
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return NS_ERROR_NULL_POINTER;
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nsCOMPtr<nsIContent> rootContent;
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rootContent = getter_AddRefs(doc->GetRootContent());
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rv = esm->SetContentState(rootContent, NS_EVENT_STATE_FOCUS);
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}
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return rv;
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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 nsAReadableString& aValue,
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nsHTMLValue& aResult)
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{
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if (aAttribute == nsHTMLAtoms::tabindex) {
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if (ParseValue(aValue, 0, 32767, aResult, eHTMLUnit_Integer)) {
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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else if (aAttribute == nsHTMLAtoms::type) {
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nsGenericHTMLElement::EnumTable *table = kButtonTypeTable;
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nsAutoString val(aValue);
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while (nsnull != table->tag) {
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if (val.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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const nsHTMLValue& aValue,
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nsAWritableString& 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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EnumValueToString(aValue, kButtonTypeTable, aResult, PR_FALSE);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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return nsGenericHTMLContainerFormElement::AttributeToString(aAttribute,
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aValue, aResult);
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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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NS_ENSURE_ARG(aPresContext);
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NS_ENSURE_ARG_POINTER(aEventStatus);
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// Do not process any DOM events if the element is disabled
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PRBool bDisabled;
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nsresult rv = GetDisabled(&bDisabled);
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if (NS_FAILED(rv) || bDisabled) {
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return rv;
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}
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// Try script event handlers first
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nsresult ret;
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ret = nsGenericHTMLContainerFormElement::HandleDOMEvent(aPresContext,
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aEvent, aDOMEvent,
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aFlags,
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aEventStatus);
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if ((NS_OK == ret) && (nsEventStatus_eIgnore == *aEventStatus) &&
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!(aFlags & NS_EVENT_FLAG_CAPTURE)) {
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switch (aEvent->message) {
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case NS_KEY_PRESS:
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{
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// For backwards compat, trigger buttons with space or enter
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// (bug 25300)
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nsKeyEvent * keyEvent = (nsKeyEvent *)aEvent;
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if (keyEvent->keyCode == NS_VK_RETURN ||
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keyEvent->charCode == NS_VK_SPACE) {
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nsEventStatus status = nsEventStatus_eIgnore;
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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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event.isShift = PR_FALSE;
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event.isControl = PR_FALSE;
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event.isAlt = PR_FALSE;
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event.isMeta = PR_FALSE;
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event.clickCount = 0;
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event.widget = nsnull;
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rv = HandleDOMEvent(aPresContext, &event, nsnull,
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NS_EVENT_FLAG_INIT, &status);
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}
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}
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break;// NS_KEY_PRESS
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case NS_MOUSE_LEFT_CLICK:
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{
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// Tell the frame about the click
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nsIFormControlFrame* formControlFrame = nsnull;
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rv = GetPrimaryFrame(this, formControlFrame);
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if (NS_SUCCEEDED(rv)) {
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formControlFrame->MouseClicked(aPresContext);
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}
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}
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break;// NS_MOUSE_LEFT_CLICK
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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 |
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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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// cancel all of these events for buttons
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case NS_MOUSE_MIDDLE_BUTTON_DOWN:
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case NS_MOUSE_MIDDLE_BUTTON_UP:
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case NS_MOUSE_MIDDLE_DOUBLECLICK:
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case NS_MOUSE_RIGHT_DOUBLECLICK:
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case NS_MOUSE_RIGHT_BUTTON_DOWN:
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case NS_MOUSE_RIGHT_BUTTON_UP:
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if (aDOMEvent != nsnull && *aDOMEvent != nsnull) {
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(*aDOMEvent)->PreventBubble();
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} else {
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ret = NS_ERROR_FAILURE;
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}
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break;
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case NS_MOUSE_ENTER_SYNTH:
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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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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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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_SYNTH:
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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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*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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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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NS_IMETHODIMP
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nsHTMLButtonElement::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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