nsImageControlFrame.cpp
/* -*- 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.org 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 "nsCOMPtr.h"
#include "nsImageFrame.h"
#include "nsIFormControlFrame.h"
#include "nsIFormControl.h"
#include "nsHTMLParts.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsStyleContext.h"
#include "nsLeafFrame.h"
#include "nsCSSRendering.h"
#include "nsISupports.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsFormControlFrame.h"
#include "nsGUIEvent.h"
#include "nsIServiceManager.h"
#include "nsContainerFrame.h"
#include "nsLayoutUtils.h"
#ifdef ACCESSIBILITY
#include "nsAccessibilityService.h"
#endif
void
IntPointDtorFunc(void *aObject, nsIAtom *aPropertyName,
void *aPropertyValue, void *aData)
{
nsIntPoint *propertyValue = static_cast<nsIntPoint*>(aPropertyValue);
delete propertyValue;
}
#define nsImageControlFrameSuper nsImageFrame
class nsImageControlFrame : public nsImageControlFrameSuper,
public nsIFormControlFrame
{
public:
nsImageControlFrame(nsStyleContext* aContext);
~nsImageControlFrame();
virtual void DestroyFrom(nsIFrame* aDestructRoot);
NS_IMETHOD Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow);
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
virtual nsIAtom* GetType() const;
#ifdef ACCESSIBILITY
virtual already_AddRefed<nsAccessible> CreateAccessible();
#endif
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const {
return MakeFrameName(NS_LITERAL_STRING("ImageControl"), aResult);
}
#endif
NS_IMETHOD GetCursor(const nsPoint& aPoint,
nsIFrame::Cursor& aCursor);
// nsIFormContromFrame
virtual void SetFocus(PRBool aOn, PRBool aRepaint);
virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue);
virtual nsresult GetFormProperty(nsIAtom* aName, nsAString& aValue) const;
};
nsImageControlFrame::nsImageControlFrame(nsStyleContext* aContext):
nsImageControlFrameSuper(aContext)
{
}
nsImageControlFrame::~nsImageControlFrame()
{
}
void
nsImageControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
if (!GetPrevInFlow()) {
nsFormControlFrame::RegUnRegAccessKey(this, PR_FALSE);
}
nsImageControlFrameSuper::DestroyFrom(aDestructRoot);
}
nsIFrame*
NS_NewImageControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsImageControlFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsImageControlFrame)
NS_IMETHODIMP
nsImageControlFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsresult rv = nsImageControlFrameSuper::Init(aContent, aParent, aPrevInFlow);
NS_ENSURE_SUCCESS(rv, rv);
// nsIntPoint allocation can fail, in which case we just set the property
// to null, which is safe
if (aPrevInFlow) {
return NS_OK;
}
return mContent->SetProperty(nsGkAtoms::imageClickedPoint,
new nsIntPoint(0, 0),
IntPointDtorFunc);
}
NS_QUERYFRAME_HEAD(nsImageControlFrame)
NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsImageControlFrameSuper)
#ifdef ACCESSIBILITY
already_AddRefed<nsAccessible>
nsImageControlFrame::CreateAccessible()
{
nsAccessibilityService* accService = nsIPresShell::AccService();
if (accService) {
if (mContent->Tag() == nsGkAtoms::button) {
return accService->CreateHTML4ButtonAccessible(mContent, PresContext()->PresShell());
}
else if (mContent->Tag() == nsGkAtoms::input) {
return accService->CreateHTMLButtonAccessible(mContent, PresContext()->PresShell());
}
}
return nsnull;
}
#endif
nsIAtom*
nsImageControlFrame::GetType() const
{
return nsGkAtoms::imageControlFrame;
}
NS_METHOD
nsImageControlFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsImageControlFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
if (!GetPrevInFlow() && (mState & NS_FRAME_FIRST_REFLOW)) {
nsFormControlFrame::RegUnRegAccessKey(this, PR_TRUE);
}
return nsImageControlFrameSuper::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
NS_METHOD
nsImageControlFrame::HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
// Don't do anything if the event has already been handled by someone
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
return NS_OK;
}
// do we have user-input style?
const nsStyleUserInterface* uiStyle = GetStyleUserInterface();
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) { // XXX cache disabled
return NS_OK;
}
*aEventStatus = nsEventStatus_eIgnore;
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
aEvent->message == NS_MOUSE_BUTTON_UP &&
static_cast<nsMouseEvent*>(aEvent)->button == nsMouseEvent::eLeftButton) {
// Store click point for nsHTMLInputElement::SubmitNamesValues
// Do this on MouseUp because the specs don't say and that's what IE does
nsIntPoint* lastClickPoint =
static_cast<nsIntPoint*>
(mContent->GetProperty(nsGkAtoms::imageClickedPoint));
if (lastClickPoint) {
// normally lastClickedPoint is not null, as it's allocated in Init()
nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, this);
TranslateEventCoords(pt, *lastClickPoint);
}
}
return nsImageControlFrameSuper::HandleEvent(aPresContext, aEvent,
aEventStatus);
}
void
nsImageControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
{
}
NS_IMETHODIMP
nsImageControlFrame::GetCursor(const nsPoint& aPoint,
nsIFrame::Cursor& aCursor)
{
// Use style defined cursor if one is provided, otherwise when
// the cursor style is "auto" we use the pointer cursor.
FillCursorInformationFromStyle(GetStyleUserInterface(), aCursor);
if (NS_STYLE_CURSOR_AUTO == aCursor.mCursor) {
aCursor.mCursor = NS_STYLE_CURSOR_POINTER;
}
return NS_OK;
}
nsresult
nsImageControlFrame::SetFormProperty(nsIAtom* aName,
const nsAString& aValue)
{
return NS_OK;
}
nsresult
nsImageControlFrame::GetFormProperty(nsIAtom* aName,
nsAString& aValue) const
{
aValue.Truncate();
return NS_OK;
}
