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pjs/layout/forms/nsFileControlFrame.cpp

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22 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsFileControlFrame.h"
#include "nsFormFrame.h"
#include "nsIElementFactory.h"
#include "nsIContent.h"
#include "prtypes.h"
#include "nsIAtom.h"
#include "nsIPresContext.h"
#include "nsIHTMLContent.h"
#include "nsHTMLIIDs.h"
#include "nsHTMLAtoms.h"
#include "nsIPresState.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
#include "nsIView.h"
#include "nsHTMLParts.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIFormControl.h"
#include "nsINameSpaceManager.h"
#include "nsCOMPtr.h"
#include "nsISupportsArray.h"
#include "nsIDOMElement.h"
#include "nsIDOMDocument.h"
#include "nsIDocument.h"
#include "nsIDOMMouseListener.h"
#include "nsIPresShell.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIStatefulFrame.h"
#include "nsISupportsPrimitives.h"
#include "nsIComponentManager.h"
#include "nsIDOMWindowInternal.h"
#include "nsIFilePicker.h"
#include "nsIDOMMouseEvent.h"
#include "nsINodeInfo.h"
#include "nsIDOMEventReceiver.h"
#include "nsIScriptGlobalObject.h"
#include "nsContentCID.h"
static NS_DEFINE_CID(kHTMLElementFactoryCID, NS_HTML_ELEMENT_FACTORY_CID);
nsresult
NS_NewFileControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsFileControlFrame* it = new (aPresShell) nsFileControlFrame();
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
nsFileControlFrame::nsFileControlFrame():
mTextFrame(nsnull),
mFormFrame(nsnull),
mTextContent(nsnull),
mCachedState(nsnull)
{
//Shrink the area around it's contents
SetFlags(NS_BLOCK_SHRINK_WRAP);
}
nsFileControlFrame::~nsFileControlFrame()
{
NS_IF_RELEASE(mTextContent);
// remove ourself as a listener of the button (bug 40533)
if (mBrowse) {
nsCOMPtr<nsIDOMEventReceiver> reciever(do_QueryInterface(mBrowse));
reciever->RemoveEventListenerByIID(this, NS_GET_IID(nsIDOMMouseListener));
}
if (mCachedState) {
delete mCachedState;
mCachedState = nsnull;
}
if (mFormFrame) {
mFormFrame->RemoveFormControlFrame(*this);
mFormFrame = nsnull;
}
}
NS_IMETHODIMP
nsFileControlFrame::CreateAnonymousContent(nsIPresContext* aPresContext,
nsISupportsArray& aChildList)
{
// create text field
nsCOMPtr<nsIDocument> doc;
mContent->GetDocument(*getter_AddRefs(doc));
nsCOMPtr<nsINodeInfoManager> nimgr;
nsresult rv = doc->GetNodeInfoManager(*getter_AddRefs(nimgr));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsINodeInfo> nodeInfo;
nimgr->GetNodeInfo(nsHTMLAtoms::input, nsnull, kNameSpaceID_None,
*getter_AddRefs(nodeInfo));
nsCOMPtr<nsIElementFactory> ef(do_CreateInstance(kHTMLElementFactoryCID,&rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIContent> content;
rv = ef->CreateInstanceByTag(nodeInfo,getter_AddRefs(content));
NS_ENSURE_SUCCESS(rv, rv);
rv = content->QueryInterface(NS_GET_IID(nsIHTMLContent),(void**)&mTextContent);
if (NS_SUCCEEDED(rv)) {
mTextContent->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::type, NS_LITERAL_STRING("text"), PR_FALSE);
if (nsFormFrame::GetDisabled(this)) {
nsCOMPtr<nsIDOMHTMLInputElement> textControl = do_QueryInterface(mTextContent);
if (textControl) {
textControl->SetDisabled(nsFormFrame::GetDisabled(this));
}
}
aChildList.AppendElement(mTextContent);
}
// create browse button
rv = ef->CreateInstanceByTag(nodeInfo,getter_AddRefs(content));
NS_ENSURE_SUCCESS(rv, rv);
mBrowse = do_QueryInterface(content,&rv);
if (NS_SUCCEEDED(rv)) {
mBrowse->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::type, NS_LITERAL_STRING("button"), PR_FALSE);
//browse->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::value, nsAutoString("browse..."), PR_FALSE);
aChildList.AppendElement(mBrowse);
// register as an event listener of the button to open file dialog on mouse click
nsCOMPtr<nsIDOMEventReceiver> reciever(do_QueryInterface(mBrowse));
reciever->AddEventListenerByIID(this, NS_GET_IID(nsIDOMMouseListener));
}
nsAutoString value;
if (NS_CONTENT_ATTR_HAS_VALUE == mContent->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::size, value)) {
mTextContent->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::size, value, PR_FALSE);
}
return NS_OK;
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsFileControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
} else if (aIID.Equals(NS_GET_IID(nsIAnonymousContentCreator))) {
*aInstancePtr = (void*)(nsIAnonymousContentCreator*) this;
return NS_OK;
} else if (aIID.Equals(NS_GET_IID(nsIFormControlFrame))) {
*aInstancePtr = (void*) ((nsIFormControlFrame*) this);
return NS_OK;
} else if (aIID.Equals(NS_GET_IID(nsIDOMMouseListener))) {
*aInstancePtr = (void*)(nsIDOMMouseListener*) this;
return NS_OK;
} else if (aIID.Equals(NS_GET_IID(nsIStatefulFrame))) {
*aInstancePtr = (void*)(nsIStatefulFrame*) this;
return NS_OK;
}
return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtr);
}
PRBool
nsFileControlFrame::IsSuccessful(nsIFormControlFrame* aSubmitter)
{
nsAutoString name;
PRBool disabled = PR_FALSE;
nsFormControlHelper::GetDisabled(mContent, &disabled);
return !disabled && (NS_CONTENT_ATTR_HAS_VALUE == GetName(&name));
}
void
nsFileControlFrame::Reset(nsIPresContext* aPresContext)
{
if (mTextFrame) {
mTextFrame->Reset(aPresContext);
}
}
NS_IMETHODIMP
nsFileControlFrame::GetType(PRInt32* aType) const
{
*aType = NS_FORM_INPUT_FILE;
return NS_OK;
}
void
nsFileControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
{
// Fix for Bug 6133
if (mTextFrame) {
nsCOMPtr<nsIContent> content;
mTextFrame->GetContent(getter_AddRefs(content));
if (content) {
content->SetFocus(mPresContext);
}
}
}
void
nsFileControlFrame::ScrollIntoView(nsIPresContext* aPresContext)
{
if (aPresContext) {
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
if (presShell) {
presShell->ScrollFrameIntoView(this,
NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE,NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE);
}
}
}
/**
* This is called when our browse button is clicked
*/
nsresult
nsFileControlFrame::MouseClick(nsIDOMEvent* aMouseEvent)
{
// only allow the left button
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
if (mouseEvent) {
PRUint16 whichButton;
if (NS_SUCCEEDED(mouseEvent->GetButton(&whichButton))) {
if (whichButton != 0) {
return NS_OK;
}
}
}
nsresult result;
// Get parent nsIDOMWindowInternal object.
nsCOMPtr<nsIContent> content;
result = GetContent(getter_AddRefs(content));
if (!content)
return NS_FAILED(result) ? result : NS_ERROR_FAILURE;
nsCOMPtr<nsIDocument> doc;
result = content->GetDocument(*getter_AddRefs(doc));
if (!doc)
return NS_FAILED(result) ? result : NS_ERROR_FAILURE;
nsCOMPtr<nsIScriptGlobalObject> scriptGlobalObject;
result = doc->GetScriptGlobalObject(getter_AddRefs(scriptGlobalObject));
if (!scriptGlobalObject)
return NS_FAILED(result) ? result : NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMWindowInternal> parentWindow = do_QueryInterface(scriptGlobalObject);
if (!parentWindow)
return NS_ERROR_FAILURE;
// Get Loc title
nsString title;
nsFormControlHelper::GetLocalizedString(nsFormControlHelper::GetHTMLPropertiesFileName(),
"FileUpload", title);
nsCOMPtr<nsIFilePicker> filePicker = do_CreateInstance("@mozilla.org/filepicker;1");
if (!filePicker)
return NS_ERROR_FAILURE;
result = filePicker->Init(parentWindow, title.get(), nsIFilePicker::modeOpen);
if (NS_FAILED(result))
return result;
// Set filter "All Files"
filePicker->AppendFilters(nsIFilePicker::filterAll);
// Set default directry and filename
nsAutoString defaultName;
GetProperty(nsHTMLAtoms::value, defaultName);
nsCOMPtr<nsILocalFile> currentFile = do_CreateInstance("@mozilla.org/file/local;1");
if (currentFile && !defaultName.IsEmpty()) {
result = currentFile->InitWithUnicodePath(defaultName.get());
if (NS_SUCCEEDED(result)) {
PRUnichar *leafName = nsnull;
currentFile->GetUnicodeLeafName(&leafName);
if (leafName) {
filePicker->SetDefaultString(leafName);
nsMemory::Free(leafName);
}
// set directory
nsCOMPtr<nsIFile> parentFile;
currentFile->GetParent(getter_AddRefs(parentFile));
if (parentFile) {
nsCOMPtr<nsILocalFile> parentLocalFile = do_QueryInterface(parentFile, &result);
if (parentLocalFile)
filePicker->SetDisplayDirectory(parentLocalFile);
}
}
}
// Open dialog
PRInt16 mode;
result = filePicker->Show(&mode);
if (NS_FAILED(result))
return result;
if (mode == nsIFilePicker::returnCancel)
return NS_OK;
// Set property
nsCOMPtr<nsILocalFile> localFile;
result = filePicker->GetFile(getter_AddRefs(localFile));
if (localFile) {
PRUnichar *nativePath = nsnull;
result = localFile->GetUnicodePath(&nativePath);
if (nativePath) {
nsAutoString pathName(nativePath);
mTextFrame->SetProperty(mPresContext, nsHTMLAtoms::value, pathName);
nsMemory::Free(nativePath);
return NS_OK;
}
}
return NS_FAILED(result) ? result : NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsFileControlFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsFileControlFrame", aReflowState.reason);
aStatus = NS_FRAME_COMPLETE;
if (mFormFrame == nsnull && eReflowReason_Initial == aReflowState.reason) {
// add ourself as an nsIFormControlFrame
nsFormFrame::AddFormControlFrame(aPresContext, *NS_STATIC_CAST(nsIFrame*, this));
mTextFrame = GetTextControlFrame(aPresContext, this);
if (!mTextFrame) return NS_ERROR_UNEXPECTED;
if (mCachedState) {
mTextFrame->SetProperty(aPresContext, nsHTMLAtoms::value, *mCachedState);
delete mCachedState;
mCachedState = nsnull;
}
}
// The Areaframe takes care of all our reflow
// except for when style is used to change its size.
nsresult rv = nsAreaFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
if (NS_SUCCEEDED(rv) && mTextFrame != nsnull) {
nsIFrame * child;
FirstChild(aPresContext, nsnull, &child);
while (child == mTextFrame) {
child->GetNextSibling(&child);
}
if (child != nsnull) {
nsRect buttonRect;
nsRect txtRect;
mTextFrame->GetRect(txtRect);
child->GetRect(buttonRect);
// check to see if we must reflow just the texField
// because style width or height was set.
if (txtRect.width + buttonRect.width != aDesiredSize.width ||
txtRect.height != aDesiredSize.height) {
nsSize txtAvailSize(aDesiredSize.width - buttonRect.width, aDesiredSize.height);
nsHTMLReflowMetrics txtKidSize(&txtAvailSize);
nsHTMLReflowState txtKidReflowState(aPresContext, aReflowState, mTextFrame, txtAvailSize);
txtKidReflowState.reason = eReflowReason_Resize;
txtKidReflowState.mComputedWidth = txtAvailSize.width;
txtKidReflowState.mComputedHeight = txtAvailSize.height;
mTextFrame->WillReflow(aPresContext);
nsReflowStatus status;
rv = mTextFrame->Reflow(aPresContext, txtKidSize, txtKidReflowState, status);
if (NS_FAILED(rv)) return rv;
rv = mTextFrame->DidReflow(aPresContext, aStatus);
if (NS_FAILED(rv)) return rv;
// now adjust the frame positions
buttonRect.x = aDesiredSize.width - buttonRect.width + aReflowState.mComputedBorderPadding.left;
child->SetRect(aPresContext, buttonRect);
txtRect.y = aReflowState.mComputedBorderPadding.top;
txtRect.height = aDesiredSize.height;
txtRect.width = aDesiredSize.width - buttonRect.width;
mTextFrame->SetRect(aPresContext, txtRect);
}
}
}
return rv;
}
/*
NS_IMETHODIMP
nsFileControlFrame::SetInitialChildList(nsIPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
nsresult r = nsAreaFrame::SetInitialChildList(aPresContext, aListName, aChildList);
// given that the CSS frame constuctor created all our frames. We need to find the text field
// so we can get info from it.
mTextFrame = GetTextControlFrame(this);
}
*/
/**
* Given a start node. Find the given text node inside. We need to do this because the
* frame constuctor create the frame and its implementation. So we are given the text
* node from the constructor and we find it in our tree.
*/
nsNewFrame*
nsFileControlFrame::GetTextControlFrame(nsIPresContext* aPresContext, nsIFrame* aStart)
{
nsNewFrame* result = nsnull;
#ifndef DEBUG_NEWFRAME
// find the text control frame.
nsIFrame* childFrame = nsnull;
aStart->FirstChild(aPresContext, nsnull, &childFrame);
while (childFrame) {
// see if the child is a text control
nsCOMPtr<nsIContent> content;
nsresult res = childFrame->GetContent(getter_AddRefs(content));
if (NS_SUCCEEDED(res) && content) {
nsCOMPtr<nsIAtom> atom;
res = content->GetTag(*getter_AddRefs(atom));
if (NS_SUCCEEDED(res) && atom) {
if (atom.get() == nsHTMLAtoms::input) {
// It's an input, is it a text input?
nsAutoString value;
if (NS_CONTENT_ATTR_HAS_VALUE == content->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::type, value)) {
if (value.EqualsIgnoreCase("text")) {
result = (nsNewFrame*)childFrame;
}
}
}
}
}
// if not continue looking
nsNewFrame* frame = GetTextControlFrame(aPresContext, childFrame);
if (frame)
result = frame;
res = childFrame->GetNextSibling(&childFrame);
NS_ASSERTION(res == NS_OK,"failed to get next child");
}
return result;
#else
return nsnull;
#endif
}
PRIntn
nsFileControlFrame::GetSkipSides() const
{
return 0;
}
NS_IMETHODIMP
nsFileControlFrame::GetName(nsString* aResult)
{
nsresult result = NS_FORM_NOTOK;
if (mContent) {
nsIHTMLContent* formControl = nsnull;
result = mContent->QueryInterface(kIHTMLContentIID, (void**)&formControl);
if ((NS_OK == result) && formControl) {
nsHTMLValue value;
result = formControl->GetHTMLAttribute(nsHTMLAtoms::name, value);
if (NS_CONTENT_ATTR_HAS_VALUE == result) {
if (eHTMLUnit_String == value.GetUnit()) {
value.GetStringValue(*aResult);
}
}
NS_RELEASE(formControl);
}
}
return result;
}
PRInt32
nsFileControlFrame::GetMaxNumValues()
{
return 1;
}
PRBool
nsFileControlFrame::GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames)
{
nsAutoString name;
nsresult result = GetName(&name);
if ((aMaxNumValues <= 0) || (NS_CONTENT_ATTR_HAS_VALUE != result)) {
return PR_FALSE;
}
// use our name and the text widgets value
aNames[0] = name;
nsresult status = PR_FALSE;
if (NS_SUCCEEDED(mTextFrame->GetProperty(nsHTMLAtoms::value, aValues[0]))) {
aNumValues = 1;
status = PR_TRUE;
}
return status;
}
NS_IMETHODIMP
nsFileControlFrame::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint)
{
// set the text control to readonly or not
if (nsHTMLAtoms::disabled == aAttribute) {
nsCOMPtr<nsIDOMHTMLInputElement> textControl = do_QueryInterface(mTextContent);
if (textControl)
{
textControl->SetDisabled(nsFormFrame::GetDisabled(this));
}
} else if (nsHTMLAtoms::size == aAttribute) {
nsString value;
if (nsnull != mTextContent && NS_CONTENT_ATTR_HAS_VALUE == mContent->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::size, value)) {
mTextContent->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::size, value, PR_TRUE);
if (aHint != NS_STYLE_HINT_REFLOW) {
nsFormFrame::StyleChangeReflow(aPresContext, this);
}
}
}
return nsAreaFrame::AttributeChanged(aPresContext, aChild, aNameSpaceID, aAttribute, aHint);
}
NS_IMETHODIMP
nsFileControlFrame::GetFrameForPoint(nsIPresContext* aPresContext,
const nsPoint& aPoint,
nsFramePaintLayer aWhichLayer,
nsIFrame** aFrame)
{
#ifndef DEBUG_NEWFRAME
if ( nsFormFrame::GetDisabled(this) && mRect.Contains(aPoint) ) {
const nsStyleVisibility* vis =
(const nsStyleVisibility*)mStyleContext->GetStyleData(eStyleStruct_Visibility);
if (vis->IsVisible()) {
*aFrame = this;
return NS_OK;
}
} else {
return nsAreaFrame::GetFrameForPoint(aPresContext, aPoint, aWhichLayer, aFrame);
}
#endif
return NS_OK;
}
#ifdef NS_DEBUG
NS_IMETHODIMP
nsFileControlFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("FileControl", aResult);
}
#endif
NS_IMETHODIMP
nsFileControlFrame::GetFormContent(nsIContent*& aContent) const
{
nsIContent* content;
nsresult rv;
rv = GetContent(&content);
aContent = content;
return rv;
}
NS_IMETHODIMP
nsFileControlFrame::GetFont(nsIPresContext* aPresContext,
const nsFont*& aFont)
{
return nsFormControlHelper::GetFont(this, aPresContext, mStyleContext, aFont);
}
nscoord
nsFileControlFrame::GetVerticalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerHeight) const
{
return 0;
}
nscoord
nsFileControlFrame::GetHorizontalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const
{
return 0;
}
nsresult nsFileControlFrame::RequiresWidget(PRBool& aRequiresWidget)
{
aRequiresWidget = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP nsFileControlFrame::SetProperty(nsIPresContext* aPresContext,
nsIAtom* aName,
const nsAReadableString& aValue)
{
nsresult rv = NS_OK;
if (nsHTMLAtoms::value == aName) {
if (mTextFrame) {
mTextFrame->SetTextControlFrameState(aValue);
} else {
if (mCachedState) delete mCachedState;
mCachedState = new nsString(aValue);
if (!mCachedState) rv = NS_ERROR_OUT_OF_MEMORY;
}
}
return rv;
}
NS_IMETHODIMP nsFileControlFrame::GetProperty(nsIAtom* aName, nsAWritableString& aValue)
{
aValue.Truncate(); // initialize out param
if (nsHTMLAtoms::value == aName) {
if (mTextFrame) {
mTextFrame->GetTextControlFrameState(aValue);
}
else if (mCachedState) {
aValue.Assign(*mCachedState);
}
}
return NS_OK;
}
NS_METHOD
nsFileControlFrame::Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
PRBool isVisible;
if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_TRUE, &isVisible)) && !isVisible) {
return NS_OK;
}
nsresult rv = nsAreaFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
if (NS_FAILED(rv)) return rv;
return nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
}
//----------------------------------------------------------------------
// nsIStatefulFrame
//----------------------------------------------------------------------
NS_IMETHODIMP
nsFileControlFrame::SaveState(nsIPresContext* aPresContext, nsIPresState** aState)
{
NS_ENSURE_ARG_POINTER(aState);
// Don't save state before we are initialized
if (!mTextFrame && !mCachedState) {
return NS_OK;
}
// Get the value string
nsAutoString stateString;
nsresult res = GetProperty(nsHTMLAtoms::value, stateString);
NS_ENSURE_SUCCESS(res, res);
// Compare to default value, and only save if needed (Bug 62713)
nsAutoString defaultStateString;
nsCOMPtr<nsIDOMHTMLInputElement> formControl(do_QueryInterface(mContent));
if (formControl) {
formControl->GetDefaultValue(defaultStateString);
}
if (! stateString.Equals(defaultStateString)) {
// Construct a pres state and store value in it.
res = NS_NewPresState(aState);
NS_ENSURE_SUCCESS(res, res);
res = (*aState)->SetStateProperty(NS_LITERAL_STRING("value"), stateString);
}
return res;
}
NS_IMETHODIMP
nsFileControlFrame::RestoreState(nsIPresContext* aPresContext, nsIPresState* aState)
{
NS_ENSURE_ARG_POINTER(aState);
nsAutoString string;
aState->GetStateProperty(NS_LITERAL_STRING("value"), string);
SetProperty(aPresContext, nsHTMLAtoms::value, string);
return NS_OK;
}
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