forked from mirrors/gecko-dev
276 lines
8.9 KiB
C++
276 lines
8.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsImageFrame.h"
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#include "nsIFormControlFrame.h"
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#include "nsIFormControl.h"
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#include "nsHTMLParts.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsStyleContext.h"
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#include "nsLeafFrame.h"
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#include "nsCSSRendering.h"
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#include "nsISupports.h"
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#include "nsGkAtoms.h"
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#include "nsIDeviceContext.h"
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#include "nsStyleConsts.h"
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#include "nsFormControlFrame.h"
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#include "nsGUIEvent.h"
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#include "nsIServiceManager.h"
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#include "nsContainerFrame.h"
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#include "nsLayoutUtils.h"
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#ifdef ACCESSIBILITY
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#include "nsAccessibilityService.h"
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#endif
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void
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IntPointDtorFunc(void *aObject, nsIAtom *aPropertyName,
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void *aPropertyValue, void *aData)
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{
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nsIntPoint *propertyValue = static_cast<nsIntPoint*>(aPropertyValue);
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delete propertyValue;
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}
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#define nsImageControlFrameSuper nsImageFrame
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class nsImageControlFrame : public nsImageControlFrameSuper,
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public nsIFormControlFrame
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{
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public:
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nsImageControlFrame(nsStyleContext* aContext);
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~nsImageControlFrame();
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virtual void DestroyFrom(nsIFrame* aDestructRoot);
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NS_IMETHOD Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow);
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS
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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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virtual nsIAtom* GetType() const;
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#ifdef ACCESSIBILITY
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virtual already_AddRefed<nsAccessible> CreateAccessible();
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#endif
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const {
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return MakeFrameName(NS_LITERAL_STRING("ImageControl"), aResult);
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}
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#endif
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NS_IMETHOD GetCursor(const nsPoint& aPoint,
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nsIFrame::Cursor& aCursor);
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// nsIFormContromFrame
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virtual void SetFocus(PRBool aOn, PRBool aRepaint);
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virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue);
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virtual nsresult GetFormProperty(nsIAtom* aName, nsAString& aValue) const;
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};
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nsImageControlFrame::nsImageControlFrame(nsStyleContext* aContext):
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nsImageControlFrameSuper(aContext)
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{
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}
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nsImageControlFrame::~nsImageControlFrame()
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{
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}
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void
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nsImageControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
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{
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if (!GetPrevInFlow()) {
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nsFormControlFrame::RegUnRegAccessKey(this, PR_FALSE);
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}
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nsImageControlFrameSuper::DestroyFrom(aDestructRoot);
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}
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nsIFrame*
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NS_NewImageControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsImageControlFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsImageControlFrame)
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NS_IMETHODIMP
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nsImageControlFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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nsresult rv = nsImageControlFrameSuper::Init(aContent, aParent, aPrevInFlow);
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NS_ENSURE_SUCCESS(rv, rv);
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// nsIntPoint allocation can fail, in which case we just set the property
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// to null, which is safe
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if (aPrevInFlow) {
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return NS_OK;
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}
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return mContent->SetProperty(nsGkAtoms::imageClickedPoint,
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new nsIntPoint(0, 0),
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IntPointDtorFunc);
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}
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NS_QUERYFRAME_HEAD(nsImageControlFrame)
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NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsImageControlFrameSuper)
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#ifdef ACCESSIBILITY
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already_AddRefed<nsAccessible>
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nsImageControlFrame::CreateAccessible()
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{
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nsAccessibilityService* accService = nsIPresShell::AccService();
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if (accService) {
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if (mContent->Tag() == nsGkAtoms::button) {
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return accService->CreateHTML4ButtonAccessible(mContent, PresContext()->PresShell());
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}
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else if (mContent->Tag() == nsGkAtoms::input) {
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return accService->CreateHTMLButtonAccessible(mContent, PresContext()->PresShell());
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}
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}
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return nsnull;
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}
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#endif
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nsIAtom*
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nsImageControlFrame::GetType() const
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{
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return nsGkAtoms::imageControlFrame;
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}
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NS_METHOD
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nsImageControlFrame::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsImageControlFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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if (!GetPrevInFlow() && (mState & NS_FRAME_FIRST_REFLOW)) {
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nsFormControlFrame::RegUnRegAccessKey(this, PR_TRUE);
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}
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return nsImageControlFrameSuper::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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}
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NS_METHOD
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nsImageControlFrame::HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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NS_ENSURE_ARG_POINTER(aEventStatus);
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// Don't do anything if the event has already been handled by someone
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if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
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return NS_OK;
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}
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// do we have user-input style?
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const nsStyleUserInterface* uiStyle = GetStyleUserInterface();
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if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
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return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) { // XXX cache disabled
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return NS_OK;
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}
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*aEventStatus = nsEventStatus_eIgnore;
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if (aEvent->eventStructType == NS_MOUSE_EVENT &&
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aEvent->message == NS_MOUSE_BUTTON_UP &&
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static_cast<nsMouseEvent*>(aEvent)->button == nsMouseEvent::eLeftButton) {
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// Store click point for nsHTMLInputElement::SubmitNamesValues
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// Do this on MouseUp because the specs don't say and that's what IE does
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nsIntPoint* lastClickPoint =
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static_cast<nsIntPoint*>
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(mContent->GetProperty(nsGkAtoms::imageClickedPoint));
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if (lastClickPoint) {
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// normally lastClickedPoint is not null, as it's allocated in Init()
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nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, this);
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TranslateEventCoords(pt, *lastClickPoint);
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}
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}
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return nsImageControlFrameSuper::HandleEvent(aPresContext, aEvent,
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aEventStatus);
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}
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void
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nsImageControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
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{
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}
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NS_IMETHODIMP
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nsImageControlFrame::GetCursor(const nsPoint& aPoint,
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nsIFrame::Cursor& aCursor)
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{
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// Use style defined cursor if one is provided, otherwise when
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// the cursor style is "auto" we use the pointer cursor.
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FillCursorInformationFromStyle(GetStyleUserInterface(), aCursor);
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if (NS_STYLE_CURSOR_AUTO == aCursor.mCursor) {
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aCursor.mCursor = NS_STYLE_CURSOR_POINTER;
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}
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return NS_OK;
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}
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nsresult
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nsImageControlFrame::SetFormProperty(nsIAtom* aName,
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const nsAString& aValue)
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{
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return NS_OK;
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}
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nsresult
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nsImageControlFrame::GetFormProperty(nsIAtom* aName,
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nsAString& aValue) const
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{
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aValue.Truncate();
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return NS_OK;
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}
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