зеркало из https://github.com/mozilla/gecko-dev.git
297 строки
9.0 KiB
C++
297 строки
9.0 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 "nsIImageControlFrame.h"
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#include "nsImageFrame.h"
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#include "nsFormControlHelper.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 "nsIRenderingContext.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 "nsHTMLAtoms.h"
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#include "nsIDeviceContext.h"
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#include "nsIFontMetrics.h"
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#include "nsIImage.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 "nsLayoutAtoms.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 "nsIAccessibilityService.h"
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#endif
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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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public nsIImageControlFrame
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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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NS_IMETHOD Destroy(nsPresContext *aPresContext);
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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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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NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
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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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// nsIImageControlFrame
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NS_IMETHOD GetClickedX(PRInt32* aX);
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NS_IMETHOD GetClickedY(PRInt32* aY);
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protected:
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NS_IMETHOD_(nsrefcnt) AddRef(void);
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NS_IMETHOD_(nsrefcnt) Release(void);
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nsPoint mLastClickPoint;
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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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mLastClickPoint = nsPoint(0,0);
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}
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nsImageControlFrame::~nsImageControlFrame()
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{
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}
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NS_IMETHODIMP
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nsImageControlFrame::Destroy(nsPresContext *aPresContext)
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{
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nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_FALSE);
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return nsImageControlFrameSuper::Destroy(aPresContext);
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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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// Frames are not refcounted, no need to AddRef
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NS_IMETHODIMP
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nsImageControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_PRECONDITION(0 != aInstancePtr, "null ptr");
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(NS_GET_IID(nsIFormControlFrame))) {
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*aInstancePtr = (void*) ((nsIFormControlFrame*) this);
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return NS_OK;
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}
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if (aIID.Equals(NS_GET_IID(nsIImageControlFrame))) {
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*aInstancePtr = (void*) ((nsIImageControlFrame*) this);
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return NS_OK;
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}
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return nsImageControlFrameSuper::QueryInterface(aIID, aInstancePtr);
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}
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#ifdef ACCESSIBILITY
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NS_IMETHODIMP nsImageControlFrame::GetAccessible(nsIAccessible** aAccessible)
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{
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nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
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if (accService) {
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if (mContent->Tag() == nsHTMLAtoms::button) {
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return accService->CreateHTML4ButtonAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
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}
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else if (mContent->Tag() == nsHTMLAtoms::input) {
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return accService->CreateHTMLButtonAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
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}
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}
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return NS_ERROR_FAILURE;
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}
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#endif
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nsrefcnt nsImageControlFrame::AddRef(void)
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{
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NS_WARNING("not supported");
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return 1;
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}
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nsrefcnt nsImageControlFrame::Release(void)
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{
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NS_WARNING("not supported");
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return 1;
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}
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nsIAtom*
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nsImageControlFrame::GetType() const
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{
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return nsLayoutAtoms::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", aReflowState.reason);
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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if (aReflowState.reason == eReflowReason_Initial) {
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nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, 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 (nsFormControlHelper::GetDisabled(mContent)) { // 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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switch (aEvent->message) {
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case NS_MOUSE_LEFT_BUTTON_UP:
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{
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// Store click point for GetNamesValues
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// Do this on MouseUp because the specs don't say and that's what IE does
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nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, this);
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TranslateEventCoords(pt, mLastClickPoint);
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break;
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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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NS_IMETHODIMP
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nsImageControlFrame::GetClickedX(PRInt32* aX)
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{
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*aX = mLastClickPoint.x;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageControlFrame::GetClickedY(PRInt32* aY)
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{
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*aY = mLastClickPoint.y;
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return NS_OK;
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}
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