542 lines
16 KiB
C++
542 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla Communicator client code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
#include "nsIDOMHTMLButtonElement.h"
|
|
#include "nsIDOMNSHTMLButtonElement.h"
|
|
#include "nsIDOMHTMLFormElement.h"
|
|
#include "nsIDOMEventReceiver.h"
|
|
#include "nsGenericHTMLElement.h"
|
|
#include "nsHTMLAtoms.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsStyleConsts.h"
|
|
#include "nsPresContext.h"
|
|
#include "nsIFormControl.h"
|
|
#include "nsIForm.h"
|
|
#include "nsIFormSubmission.h"
|
|
#include "nsIURL.h"
|
|
|
|
#include "nsIFrame.h"
|
|
#include "nsIFormControlFrame.h"
|
|
#include "nsIEventStateManager.h"
|
|
#include "nsIDOMEvent.h"
|
|
#include "nsIDOMNSEvent.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsGUIEvent.h"
|
|
#include "nsUnicharUtils.h"
|
|
#include "nsLayoutUtils.h"
|
|
#include "nsEventDispatcher.h"
|
|
|
|
#define NS_IN_SUBMIT_CLICK (1 << 0)
|
|
|
|
class nsHTMLButtonElement : public nsGenericHTMLFormElement,
|
|
public nsIDOMHTMLButtonElement,
|
|
public nsIDOMNSHTMLButtonElement
|
|
{
|
|
public:
|
|
nsHTMLButtonElement(nsINodeInfo *aNodeInfo);
|
|
virtual ~nsHTMLButtonElement();
|
|
|
|
// nsISupports
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
|
|
// nsIDOMNode
|
|
NS_FORWARD_NSIDOMNODE_NO_CLONENODE(nsGenericHTMLFormElement::)
|
|
|
|
// nsIDOMElement
|
|
NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLFormElement::)
|
|
|
|
// nsIDOMHTMLElement
|
|
NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLFormElement::)
|
|
|
|
// nsIDOMHTMLButtonElement
|
|
NS_DECL_NSIDOMHTMLBUTTONELEMENT
|
|
|
|
// nsIDOMNSHTMLButtonElement
|
|
// Can't just use the macro, since it shares GetType with
|
|
// nsIDOMHTMLButtonElement
|
|
NS_IMETHOD Blur();
|
|
NS_IMETHOD Focus();
|
|
NS_IMETHOD Click();
|
|
NS_IMETHOD SetType(const nsAString& aType);
|
|
|
|
// overrided nsIFormControl method
|
|
NS_IMETHOD_(PRInt32) GetType() const { return mType; }
|
|
NS_IMETHOD Reset();
|
|
NS_IMETHOD SubmitNamesValues(nsIFormSubmission* aFormSubmission,
|
|
nsIContent* aSubmitElement);
|
|
|
|
// nsIContent overrides...
|
|
virtual void SetFocus(nsPresContext* aPresContext);
|
|
virtual PRBool IsFocusable(PRInt32 *aTabIndex = nsnull);
|
|
virtual PRBool ParseAttribute(PRInt32 aNamespaceID,
|
|
nsIAtom* aAttribute,
|
|
const nsAString& aValue,
|
|
nsAttrValue& aResult);
|
|
virtual nsresult PreHandleEvent(nsEventChainPreVisitor& aVisitor);
|
|
virtual nsresult PostHandleEvent(nsEventChainPostVisitor& aVisitor);
|
|
|
|
protected:
|
|
PRInt8 mType;
|
|
PRPackedBool mHandlingClick;
|
|
|
|
private:
|
|
// The analogue of defaultValue in the DOM for input and textarea
|
|
nsresult SetDefaultValue(const nsAString& aDefaultValue);
|
|
nsresult GetDefaultValue(nsAString& aDefaultValue);
|
|
};
|
|
|
|
|
|
// Construction, destruction
|
|
|
|
|
|
NS_IMPL_NS_NEW_HTML_ELEMENT(Button)
|
|
|
|
|
|
nsHTMLButtonElement::nsHTMLButtonElement(nsINodeInfo *aNodeInfo)
|
|
: nsGenericHTMLFormElement(aNodeInfo)
|
|
{
|
|
mType = NS_FORM_BUTTON_SUBMIT; // default
|
|
mHandlingClick = PR_FALSE;
|
|
}
|
|
|
|
nsHTMLButtonElement::~nsHTMLButtonElement()
|
|
{
|
|
}
|
|
|
|
// nsISupports
|
|
|
|
NS_IMPL_ADDREF_INHERITED(nsHTMLButtonElement, nsGenericElement)
|
|
NS_IMPL_RELEASE_INHERITED(nsHTMLButtonElement, nsGenericElement)
|
|
|
|
|
|
// QueryInterface implementation for nsHTMLButtonElement
|
|
NS_HTML_CONTENT_INTERFACE_MAP_BEGIN(nsHTMLButtonElement,
|
|
nsGenericHTMLFormElement)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMHTMLButtonElement)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMNSHTMLButtonElement)
|
|
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(HTMLButtonElement)
|
|
NS_HTML_CONTENT_INTERFACE_MAP_END
|
|
|
|
// nsIDOMHTMLButtonElement
|
|
|
|
|
|
NS_IMPL_DOM_CLONENODE(nsHTMLButtonElement)
|
|
|
|
|
|
// nsIDOMHTMLButtonElement
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLButtonElement::GetForm(nsIDOMHTMLFormElement** aForm)
|
|
{
|
|
return nsGenericHTMLFormElement::GetForm(aForm);
|
|
}
|
|
|
|
NS_IMPL_STRING_ATTR(nsHTMLButtonElement, AccessKey, accesskey)
|
|
NS_IMPL_BOOL_ATTR(nsHTMLButtonElement, Disabled, disabled)
|
|
NS_IMPL_STRING_ATTR(nsHTMLButtonElement, Name, name)
|
|
NS_IMPL_INT_ATTR_DEFAULT_VALUE(nsHTMLButtonElement, TabIndex, tabindex, 0)
|
|
NS_IMPL_STRING_ATTR(nsHTMLButtonElement, Value, value)
|
|
NS_IMPL_STRING_ATTR_DEFAULT_VALUE(nsHTMLButtonElement, Type, type, "submit")
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLButtonElement::Blur()
|
|
{
|
|
SetElementFocus(PR_FALSE);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLButtonElement::Focus()
|
|
{
|
|
if (ShouldFocus(this)) {
|
|
SetElementFocus(PR_TRUE);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLButtonElement::Click()
|
|
{
|
|
if (mHandlingClick)
|
|
return NS_OK;
|
|
|
|
mHandlingClick = PR_TRUE;
|
|
// Hold on to the document in case one of the events makes it die or
|
|
// something...
|
|
nsCOMPtr<nsIDocument> doc = GetCurrentDoc();
|
|
|
|
if (doc) {
|
|
nsIPresShell *shell = doc->GetShellAt(0);
|
|
if (shell) {
|
|
nsCOMPtr<nsPresContext> context = shell->GetPresContext();
|
|
if (context) {
|
|
// Click() is never called from native code, but it may be
|
|
// called from chrome JS. Mark this event trusted if Click()
|
|
// is called from chrome code.
|
|
nsMouseEvent event(nsContentUtils::IsCallerChrome(),
|
|
NS_MOUSE_LEFT_CLICK, nsnull,
|
|
nsMouseEvent::eReal);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsEventDispatcher::Dispatch(NS_STATIC_CAST(nsIContent*, this), context,
|
|
&event, nsnull, &status);
|
|
}
|
|
}
|
|
}
|
|
|
|
mHandlingClick = PR_FALSE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
nsHTMLButtonElement::IsFocusable(PRInt32 *aTabIndex)
|
|
{
|
|
if (!nsGenericHTMLElement::IsFocusable(aTabIndex)) {
|
|
return PR_FALSE;
|
|
}
|
|
if (aTabIndex && (sTabFocusModel & eTabFocus_formElementsMask) == 0) {
|
|
*aTabIndex = -1;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
void
|
|
nsHTMLButtonElement::SetFocus(nsPresContext* aPresContext)
|
|
{
|
|
if (!aPresContext)
|
|
return;
|
|
|
|
// first see if we are disabled or not. If disabled then do nothing.
|
|
if (HasAttr(kNameSpaceID_None, nsHTMLAtoms::disabled)) {
|
|
return;
|
|
}
|
|
|
|
nsIEventStateManager *esm = aPresContext->EventStateManager();
|
|
if (esm->SetContentState(this, NS_EVENT_STATE_FOCUS)) {
|
|
nsIFormControlFrame* formControlFrame = GetFormControlFrame(PR_TRUE);
|
|
if (formControlFrame) {
|
|
formControlFrame->SetFocus(PR_TRUE, PR_TRUE);
|
|
nsLayoutUtils::ScrollIntoView(formControlFrame);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const nsAttrValue::EnumTable kButtonTypeTable[] = {
|
|
{ "button", NS_FORM_BUTTON_BUTTON },
|
|
{ "reset", NS_FORM_BUTTON_RESET },
|
|
{ "submit", NS_FORM_BUTTON_SUBMIT },
|
|
{ 0 }
|
|
};
|
|
|
|
PRBool
|
|
nsHTMLButtonElement::ParseAttribute(PRInt32 aNamespaceID,
|
|
nsIAtom* aAttribute,
|
|
const nsAString& aValue,
|
|
nsAttrValue& aResult)
|
|
{
|
|
if (aAttribute == nsHTMLAtoms::type && kNameSpaceID_None == aNamespaceID) {
|
|
// XXX ARG!! This is major evilness. ParseAttribute
|
|
// shouldn't set members. Override SetAttr instead
|
|
PRBool res = aResult.ParseEnumValue(aValue, kButtonTypeTable);
|
|
if (res) {
|
|
mType = aResult.GetEnumValue();
|
|
}
|
|
return res;
|
|
}
|
|
|
|
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
|
|
aResult);
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLButtonElement::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
|
|
{
|
|
// Do not process any DOM events if the element is disabled
|
|
aVisitor.mCanHandle = PR_FALSE;
|
|
PRBool bDisabled;
|
|
nsresult rv = GetDisabled(&bDisabled);
|
|
if (NS_FAILED(rv) || bDisabled) {
|
|
return rv;
|
|
}
|
|
|
|
nsIFormControlFrame* formControlFrame = GetFormControlFrame(PR_FALSE);
|
|
|
|
if (formControlFrame) {
|
|
nsIFrame* formFrame = nsnull;
|
|
CallQueryInterface(formControlFrame, &formFrame);
|
|
|
|
if (formFrame) {
|
|
const nsStyleUserInterface* uiStyle = formFrame->GetStyleUserInterface();
|
|
|
|
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE ||
|
|
uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
//FIXME Should this use NS_UI_ACTIVATE, not NS_MOUSE_LEFT_CLICK?
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=309348#c16
|
|
PRBool bInSubmitClick = mType == NS_FORM_BUTTON_SUBMIT &&
|
|
aVisitor.mEvent->message == NS_MOUSE_LEFT_CLICK &&
|
|
mForm;
|
|
|
|
if (bInSubmitClick) {
|
|
aVisitor.mItemFlags |= NS_IN_SUBMIT_CLICK;
|
|
// tell the form that we are about to enter a click handler.
|
|
// that means that if there are scripted submissions, the
|
|
// latest one will be deferred until after the exit point of the handler.
|
|
mForm->OnSubmitClickBegin();
|
|
}
|
|
|
|
return nsGenericHTMLElement::PreHandleEvent(aVisitor);
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLButtonElement::PostHandleEvent(nsEventChainPostVisitor& aVisitor)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (!aVisitor.mPresContext) {
|
|
return rv;
|
|
}
|
|
// mForm is null if the event handler removed us from the document (bug 194582).
|
|
if ((aVisitor.mItemFlags & NS_IN_SUBMIT_CLICK) && mForm) {
|
|
// tell the form that we are about to exit a click handler
|
|
// so the form knows not to defer subsequent submissions
|
|
// the pending ones that were created during the handler
|
|
// will be flushed or forgoten.
|
|
mForm->OnSubmitClickEnd();
|
|
}
|
|
|
|
if (nsEventStatus_eIgnore == aVisitor.mEventStatus) {
|
|
switch (aVisitor.mEvent->message) {
|
|
case NS_KEY_PRESS:
|
|
case NS_KEY_UP:
|
|
{
|
|
// For backwards compat, trigger buttons with space or enter
|
|
// (bug 25300)
|
|
nsKeyEvent * keyEvent = (nsKeyEvent *)aVisitor.mEvent;
|
|
if ((keyEvent->keyCode == NS_VK_RETURN &&
|
|
NS_KEY_PRESS == aVisitor.mEvent->message) ||
|
|
keyEvent->keyCode == NS_VK_SPACE &&
|
|
NS_KEY_UP == aVisitor.mEvent->message) {
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
nsMouseEvent event(NS_IS_TRUSTED_EVENT(aVisitor.mEvent),
|
|
NS_MOUSE_LEFT_CLICK, nsnull,
|
|
nsMouseEvent::eReal);
|
|
nsEventDispatcher::Dispatch(NS_STATIC_CAST(nsIContent*, this),
|
|
aVisitor.mPresContext, &event, nsnull,
|
|
&status);
|
|
}
|
|
}
|
|
break;// NS_KEY_PRESS
|
|
|
|
case NS_MOUSE_LEFT_CLICK:
|
|
{
|
|
nsIPresShell *presShell = aVisitor.mPresContext->GetPresShell();
|
|
if (presShell) {
|
|
// single-click
|
|
nsUIEvent event(NS_IS_TRUSTED_EVENT(aVisitor.mEvent),
|
|
NS_UI_ACTIVATE, 1);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
presShell->HandleDOMEventWithTarget(this, &event, &status);
|
|
aVisitor.mEventStatus = status;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NS_UI_ACTIVATE:
|
|
{
|
|
if (mForm && (mType == NS_FORM_BUTTON_SUBMIT ||
|
|
mType == NS_FORM_BUTTON_RESET)) {
|
|
nsFormEvent event(PR_TRUE,
|
|
(mType == NS_FORM_BUTTON_RESET)
|
|
? NS_FORM_RESET : NS_FORM_SUBMIT);
|
|
event.originator = this;
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
nsIPresShell *presShell = aVisitor.mPresContext->GetPresShell();
|
|
// If |nsIPresShell::Destroy| has been called due to
|
|
// handling the event, the pres context will return
|
|
// a null pres shell. See bug 125624.
|
|
//
|
|
// Using presShell to dispatch the event. It makes sure that
|
|
// event is not handled if the window is being destroyed.
|
|
if (presShell) {
|
|
nsCOMPtr<nsIContent> form(do_QueryInterface(mForm));
|
|
presShell->HandleDOMEventWithTarget(form, &event, &status);
|
|
}
|
|
}
|
|
}
|
|
break;// NS_MOUSE_LEFT_CLICK
|
|
|
|
case NS_MOUSE_LEFT_BUTTON_DOWN:
|
|
{
|
|
aVisitor.mPresContext->EventStateManager()->
|
|
SetContentState(this, NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_FOCUS);
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
break;
|
|
|
|
// cancel all of these events for buttons
|
|
//XXXsmaug What to do with these events? Why these should be cancelled?
|
|
case NS_MOUSE_MIDDLE_BUTTON_DOWN:
|
|
case NS_MOUSE_MIDDLE_BUTTON_UP:
|
|
case NS_MOUSE_MIDDLE_DOUBLECLICK:
|
|
case NS_MOUSE_RIGHT_DOUBLECLICK:
|
|
case NS_MOUSE_RIGHT_BUTTON_DOWN:
|
|
case NS_MOUSE_RIGHT_BUTTON_UP:
|
|
{
|
|
if (aVisitor.mDOMEvent) {
|
|
aVisitor.mDOMEvent->StopPropagation();
|
|
} else {
|
|
rv = NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
break;
|
|
|
|
case NS_MOUSE_ENTER_SYNTH:
|
|
{
|
|
aVisitor.mPresContext->EventStateManager()->
|
|
SetContentState(this, NS_EVENT_STATE_HOVER);
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
break;
|
|
|
|
// XXX this doesn't seem to do anything yet
|
|
case NS_MOUSE_EXIT_SYNTH:
|
|
{
|
|
aVisitor.mPresContext->EventStateManager()->
|
|
SetContentState(nsnull, NS_EVENT_STATE_HOVER);
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
switch (aVisitor.mEvent->message) {
|
|
// Make sure any pending submissions from a call to
|
|
// form.submit() in a left click handler or an activate
|
|
// handler gets flushed, even if the event handler prevented
|
|
// the default action.
|
|
case NS_MOUSE_LEFT_CLICK:
|
|
case NS_UI_ACTIVATE:
|
|
if (mForm && mType == NS_FORM_BUTTON_SUBMIT) {
|
|
// Tell the form to flush a possible pending submission.
|
|
// the reason is that the script returned false (the event was
|
|
// not ignored) so if there is a stored submission, it needs to
|
|
// be submitted immediatelly.
|
|
mForm->FlushPendingSubmission();
|
|
}
|
|
break;// NS_UI_ACTIVATE
|
|
} //switch
|
|
} //if
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLButtonElement::GetDefaultValue(nsAString& aDefaultValue)
|
|
{
|
|
GetAttr(kNameSpaceID_None, nsHTMLAtoms::value, aDefaultValue);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLButtonElement::SetDefaultValue(const nsAString& aDefaultValue)
|
|
{
|
|
return SetAttr(kNameSpaceID_None, nsHTMLAtoms::value, aDefaultValue, PR_TRUE);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLButtonElement::Reset()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLButtonElement::SubmitNamesValues(nsIFormSubmission* aFormSubmission,
|
|
nsIContent* aSubmitElement)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
//
|
|
// We only submit if we were the button pressed
|
|
//
|
|
if (aSubmitElement != this) {
|
|
return NS_OK;
|
|
}
|
|
|
|
//
|
|
// Disabled elements don't submit
|
|
//
|
|
PRBool disabled;
|
|
rv = GetDisabled(&disabled);
|
|
if (NS_FAILED(rv) || disabled) {
|
|
return rv;
|
|
}
|
|
|
|
//
|
|
// Get the name (if no name, no submit)
|
|
//
|
|
nsAutoString name;
|
|
if (!GetAttr(kNameSpaceID_None, nsHTMLAtoms::name, name)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
//
|
|
// Get the value
|
|
//
|
|
nsAutoString value;
|
|
rv = GetValue(value);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
//
|
|
// Submit
|
|
//
|
|
rv = aFormSubmission->AddNameValuePair(this, name, value);
|
|
|
|
return rv;
|
|
}
|