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gecko-dev/layout/forms/nsFormControlFrame.cpp

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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 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsCOMPtr.h"
#include "nsFormControlFrame.h"
#include "nsHTMLParts.h"
#include "nsIHTMLContent.h"
#include "nsIRenderingContext.h"
#include "nsIPresShell.h"
#include "nsIPresContext.h"
#include "nsIStyleContext.h"
#include "nsLeafFrame.h"
#include "nsCSSRendering.h"
#include "nsHTMLIIDs.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsCoord.h"
#include "nsWidgetsCID.h"
#include "nsViewsCID.h"
#include "nsIComponentManager.h"
#include "nsGUIEvent.h"
#include "nsDOMEvent.h"
#include "nsIFontMetrics.h"
#include "nsIFormControl.h"
#include "nsIDeviceContext.h"
#include "nsHTMLAtoms.h"
#include "nsIButton.h" // remove this when GetCID is pure virtual
#include "nsICheckButton.h" //remove this
#include "nsITextWidget.h" //remove this
#include "nsISupports.h"
#include "nsStyleConsts.h"
#include "nsUnitConversion.h"
#include "nsStyleUtil.h"
#include "nsFormFrame.h"
#include "nsIContent.h"
#include "nsStyleUtil.h"
#include "nsINameSpaceManager.h"
#include "nsIDOMHTMLInputElement.h"
static NS_DEFINE_IID(kIWidgetIID, NS_IWIDGET_IID);
static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
static NS_DEFINE_IID(kIFormControlFrameIID, NS_IFORMCONTROLFRAME_IID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
static NS_DEFINE_IID(kIDOMHTMLInputElementIID, NS_IDOMHTMLINPUTELEMENT_IID);
nsFormControlFrame::nsFormControlFrame()
: nsLeafFrame()
{
mLastMouseState = eMouseNone;
mDidInit = PR_FALSE;
mWidget = nsnull;
}
nsFormControlFrame::~nsFormControlFrame()
{
mFormFrame = nsnull;
NS_IF_RELEASE(mWidget);
}
nsresult
nsFormControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kIFormControlFrameIID)) {
*aInstancePtr = (void*) ((nsIFormControlFrame*) this);
return NS_OK;
}
return nsLeafFrame::QueryInterface(aIID, aInstancePtr);
}
nscoord
nsFormControlFrame::GetScrollbarWidth(float aPixToTwip)
{
return NSIntPixelsToTwips(19, aPixToTwip); // XXX this is windows
}
nscoord
nsFormControlFrame::GetVerticalBorderWidth(float aPixToTwip) const
{
return NSIntPixelsToTwips(3, aPixToTwip);
}
nscoord
nsFormControlFrame::GetHorizontalBorderWidth(float aPixToTwip) const
{
return GetVerticalBorderWidth(aPixToTwip);
}
nscoord
nsFormControlFrame::GetVerticalInsidePadding(float aPixToTwip,
nscoord aInnerHeight) const
{
return NSIntPixelsToTwips(3, aPixToTwip);
}
nscoord
nsFormControlFrame::GetHorizontalInsidePadding(nsIPresContext& aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const
{
return GetVerticalInsidePadding(aPixToTwip, aInnerWidth);
}
PRInt32
nsFormControlFrame::GetMaxNumValues()
{
return 0;
}
PRBool
nsFormControlFrame::GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames)
{
aNumValues = 0;
return PR_FALSE;
}
void
nsFormControlFrame::SetClickPoint(nscoord aX, nscoord aY)
{
mLastClickPoint.x = aX;
mLastClickPoint.y = aY;
}
// XXX it would be cool if form element used our rendering sw, then
// they could be blended, and bordered, and so on...
NS_METHOD
nsFormControlFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
return nsLeafFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
aWhichLayer);
}
void
nsFormControlFrame::GetDesiredSize(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredLayoutSize,
nsSize& aDesiredWidgetSize)
{
// get the css size and let the frame use or override it
nsSize styleSize;
GetStyleSize(*aPresContext, aReflowState, styleSize);
// subclasses should always override this method, but if not and no css, make it small
aDesiredLayoutSize.width = (styleSize.width > CSS_NOTSET) ? styleSize.width : 144;
aDesiredLayoutSize.height = (styleSize.height > CSS_NOTSET) ? styleSize.height : 144;
aDesiredLayoutSize.ascent = aDesiredLayoutSize.height;
aDesiredLayoutSize.descent = 0;
if (aDesiredLayoutSize.maxElementSize) {
aDesiredLayoutSize.maxElementSize->width = aDesiredLayoutSize.width;
aDesiredLayoutSize.maxElementSize->height = aDesiredLayoutSize.height;
}
aDesiredWidgetSize.width = aDesiredLayoutSize.width;
aDesiredWidgetSize.height = aDesiredLayoutSize.height;
}
void
nsFormControlFrame::GetDesiredSize(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize)
{
nsSize ignore;
GetDesiredSize(aPresContext, aReflowState, aDesiredSize, ignore);
}
NS_IMETHODIMP
nsFormControlFrame::DidReflow(nsIPresContext& aPresContext,
nsDidReflowStatus aStatus)
{
nsresult rv = nsLeafFrame::DidReflow(aPresContext, aStatus);
// The view is created hidden; once we have reflowed it and it has been
// positioned then we show it.
if (NS_FRAME_REFLOW_FINISHED == aStatus) {
nsIView* view = nsnull;
GetView(&view);
if (nsnull != view) {
view->SetVisibility(nsViewVisibility_kShow);
}
}
return rv;
}
NS_IMETHODIMP
nsFormControlFrame::SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
// add ourself as an nsIFormControlFrame
nsFormFrame::AddFormControlFrame(aPresContext, *this);
return NS_OK;
}
NS_METHOD
nsFormControlFrame::Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
nsresult result = NS_OK;
nsCOMPtr<nsIDeviceContext> dx;
aPresContext.GetDeviceContext(getter_AddRefs(dx));
PRBool requiresWidget = PR_TRUE;
// Checkto see if the device context supports widgets at all
if (dx) {
dx->SupportsNativeWidgets(requiresWidget);
}
nsWidgetRendering mode;
aPresContext.GetWidgetRenderingMode(&mode);
if (eWidgetRendering_Gfx == mode) {
// Check with the frame to see if requires a widget to render
if (PR_TRUE == requiresWidget) {
RequiresWidget(requiresWidget);
}
}
GetDesiredSize(&aPresContext, aReflowState, aDesiredSize, mWidgetSize);
if (!mDidInit) {
if (PR_TRUE == requiresWidget) {
nsCOMPtr<nsIPresShell> presShell;
aPresContext.GetShell(getter_AddRefs(presShell));
nsCOMPtr<nsIViewManager> viewMan;
presShell->GetViewManager(getter_AddRefs(viewMan));
nsRect boundBox(0, 0, aDesiredSize.width, aDesiredSize.height);
// absolutely positioned controls already have a view but not a widget
nsIView* view = nsnull;
GetView(&view);
if (nsnull == view) {
result = nsComponentManager::CreateInstance(kViewCID, nsnull, kIViewIID, (void **)&view);
if (!NS_SUCCEEDED(result)) {
NS_ASSERTION(0, "Could not create view for form control");
aStatus = NS_FRAME_NOT_COMPLETE;
return result;
}
nsIFrame* parWithView;
nsIView *parView;
GetParentWithView(&parWithView);
parWithView->GetView(&parView);
// initialize the view as hidden since we don't know the (x,y) until Paint
result = view->Init(viewMan, boundBox, parView, nsnull, nsViewVisibility_kHide);
if (NS_OK != result) {
NS_ASSERTION(0, "view initialization failed");
aStatus = NS_FRAME_NOT_COMPLETE;
return NS_OK;
}
viewMan->InsertChild(parView, view, 0);
SetView(view);
}
PRInt32 type;
GetType(&type);
const nsIID& id = GetCID();
if ((NS_FORM_INPUT_HIDDEN != type) && (PR_TRUE == requiresWidget)) {
// Do the following only if a widget is created
nsWidgetInitData* initData = GetWidgetInitData(aPresContext); // needs to be deleted
view->CreateWidget(id, initData);
if (nsnull != initData) {
delete(initData);
}
// set our widget
result = GetWidget(view, &mWidget);
if ((NS_OK == result) && mWidget) { // keep the ref on mWidget
nsIFormControl* formControl = nsnull;
result = mContent->QueryInterface(kIFormControlIID, (void**)&formControl);
if ((NS_OK == result) && formControl) {
// set the content's widget, so it can get content modified by the widget
formControl->SetWidget(mWidget);
NS_RELEASE(formControl);
}
} else {
NS_ASSERTION(0, "could not get widget");
}
}
PostCreateWidget(&aPresContext, aDesiredSize.width, aDesiredSize.height);
mDidInit = PR_TRUE;
if ((aDesiredSize.width != boundBox.width) || (aDesiredSize.height != boundBox.height)) {
viewMan->ResizeView(view, aDesiredSize.width, aDesiredSize.height);
}
} else {
PostCreateWidget(&aPresContext, aDesiredSize.width, aDesiredSize.height);
mDidInit = PR_TRUE;
}
}
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
if (nsnull != aDesiredSize.maxElementSize) {
//XXX aDesiredSize.AddBorderPaddingToMaxElementSize(borderPadding);
}
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
NS_IMETHODIMP
nsFormControlFrame::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
nsIAtom* aAttribute,
PRInt32 aHint)
{
if (nsnull != mWidget) {
if (nsHTMLAtoms::disabled == aAttribute) {
mWidget->Enable(!nsFormFrame::GetDisabled(this));
}
}
return NS_OK;
}
nsWidgetInitData*
nsFormControlFrame::GetWidgetInitData(nsIPresContext& aPresContext)
{
return nsnull;
}
void
nsFormControlFrame::SetColors(nsIPresContext& aPresContext)
{
if (mWidget) {
nsCompatibility mode;
aPresContext.GetCompatibilityMode(&mode);
const nsStyleColor* color =
(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
if (nsnull != color) {
if (!(NS_STYLE_BG_COLOR_TRANSPARENT & color->mBackgroundFlags)) {
mWidget->SetBackgroundColor(color->mBackgroundColor);
#ifdef bug_1021_closed
} else if (eCompatibility_NavQuirks == mode) {
#else
} else {
#endif
mWidget->SetBackgroundColor(NS_RGB(0xFF, 0xFF, 0xFF));
}
mWidget->SetForegroundColor(color->mColor);
}
}
}
void
nsFormControlFrame::PostCreateWidget(nsIPresContext* aPresContext, nscoord& aWidth, nscoord& aHeight)
{
}
// native widgets don't unset focus explicitly and don't need to repaint
void
nsFormControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
{
if (mWidget && aOn) {
mWidget->SetFocus();
}
}
nsresult
nsFormControlFrame::GetWidget(nsIWidget** aWidget)
{
if (mWidget) {
NS_ADDREF(mWidget);
*aWidget = mWidget;
mWidget->Enable(!nsFormFrame::GetDisabled(this));
return NS_OK;
} else {
*aWidget = nsnull;
return NS_FORM_NOTOK;
}
}
nsresult
nsFormControlFrame::GetWidget(nsIView* aView, nsIWidget** aWidget)
{
nsIWidget* widget;
aView->GetWidget(widget);
nsresult result;
if (nsnull == widget) {
*aWidget = nsnull;
result = NS_ERROR_FAILURE;
} else {
result = widget->QueryInterface(kIWidgetIID, (void**)aWidget); // keep the ref
if (NS_FAILED(result)) {
NS_ASSERTION(0, "The widget interface is invalid"); // need to print out more details of the widget
}
NS_RELEASE(widget);
}
return result;
}
const nsIID&
nsFormControlFrame::GetIID()
{
static NS_DEFINE_IID(kButtonIID, NS_IBUTTON_IID);
return kButtonIID;
}
const nsIID&
nsFormControlFrame::GetCID()
{
static NS_DEFINE_IID(kButtonCID, NS_BUTTON_CID);
return kButtonCID;
}
NS_IMETHODIMP
nsFormControlFrame::GetMaxLength(PRInt32* aSize)
{
*aSize = -1;
nsresult result = NS_CONTENT_ATTR_NOT_THERE;
nsIHTMLContent* content = nsnull;
mContent->QueryInterface(kIHTMLContentIID, (void**) &content);
if (nsnull != content) {
nsHTMLValue value;
result = content->GetHTMLAttribute(nsHTMLAtoms::maxlength, value);
if (eHTMLUnit_Integer == value.GetUnit()) {
*aSize = value.GetIntValue();
}
NS_RELEASE(content);
}
return result;
}
nsresult
nsFormControlFrame::GetSizeFromContent(PRInt32* aSize) const
{
*aSize = -1;
nsresult result = NS_CONTENT_ATTR_NOT_THERE;
nsIHTMLContent* content = nsnull;
mContent->QueryInterface(kIHTMLContentIID, (void**) &content);
if (nsnull != content) {
nsHTMLValue value;
result = content->GetHTMLAttribute(nsHTMLAtoms::size, value);
if (eHTMLUnit_Integer == value.GetUnit()) {
*aSize = value.GetIntValue();
}
NS_RELEASE(content);
}
return result;
}
NS_IMETHODIMP
nsFormControlFrame::GetType(PRInt32* aType) const
{
nsresult result = NS_FORM_NOTOK;
if (mContent) {
nsIFormControl* formControl = nsnull;
result = mContent->QueryInterface(kIFormControlIID, (void**)&formControl);
if ((NS_OK == result) && formControl) {
result = formControl->GetType(aType);
NS_RELEASE(formControl);
}
}
return result;
}
NS_IMETHODIMP
nsFormControlFrame::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;
}
NS_IMETHODIMP
nsFormControlFrame::GetValue(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::value, value);
if (NS_CONTENT_ATTR_HAS_VALUE == result) {
if (eHTMLUnit_String == value.GetUnit()) {
value.GetStringValue(*aResult);
}
}
NS_RELEASE(formControl);
}
}
return result;
}
PRBool
nsFormControlFrame::IsSuccessful(nsIFormControlFrame* aSubmitter)
{
nsAutoString name;
// Since JS Submit() calls are not linked to an element, aSubmitter is null.
// Return success to allow the call to go through.
if (aSubmitter == nsnull) return PR_TRUE;
return (NS_CONTENT_ATTR_HAS_VALUE == GetName(&name));
}
NS_METHOD nsFormControlFrame::HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
if (nsEventStatus_eConsumeNoDefault == aEventStatus) {
return NS_OK;
}
if (nsnull != mWidget) {
// make sure that the widget in the event is this input
// XXX if there is no view, it could be an image button. Unfortunately,
// every image button will get every event.
nsIView* view;
GetView(&view);
if (view) {
if (mWidget != aEvent->widget) {
aEventStatus = nsEventStatus_eIgnore;
return NS_OK;
}
}
}
//printf(" %d %d %d %d (%d,%d) \n", this, aEvent->widget, aEvent->widgetSupports,
// aEvent->message, aEvent->point.x, aEvent->point.y);
PRInt32 type;
GetType(&type);
switch (aEvent->message) {
case NS_MOUSE_ENTER:
mLastMouseState = eMouseEnter;
break;
case NS_MOUSE_LEFT_BUTTON_DOWN:
if (NS_FORM_INPUT_IMAGE == type) {
mLastMouseState = eMouseDown;
} else {
mLastMouseState = (eMouseEnter == mLastMouseState) ? eMouseDown : eMouseNone;
}
break;
case NS_MOUSE_LEFT_BUTTON_UP:
if (eMouseDown == mLastMouseState) {
MouseClicked(&aPresContext);
}
mLastMouseState = eMouseEnter;
break;
case NS_MOUSE_EXIT:
mLastMouseState = eMouseNone;
break;
case NS_KEY_DOWN:
if (NS_KEY_EVENT == aEvent->eventStructType) {
nsKeyEvent* keyEvent = (nsKeyEvent*)aEvent;
if (NS_VK_RETURN == keyEvent->keyCode) {
EnterPressed(aPresContext);
}
else if (NS_VK_SPACE == keyEvent->keyCode) {
MouseClicked(&aPresContext);
}
}
break;
}
aEventStatus = nsEventStatus_eConsumeDoDefault;
return NS_OK;
}
void
nsFormControlFrame::GetStyleSize(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState,
nsSize& aSize)
{
if (aReflowState.HaveFixedContentWidth()) {
aSize.width = aReflowState.computedWidth;
}
else {
aSize.width = CSS_NOTSET;
}
if (aReflowState.HaveFixedContentHeight()) {
aSize.height = aReflowState.computedHeight;
}
else {
aSize.height = CSS_NOTSET;
}
}
void
nsFormControlFrame::Reset()
{
}
NS_IMETHODIMP
nsFormControlFrame::GetFormContent(nsIContent*& aContent) const
{
nsIContent* content;
nsresult rv;
rv = GetContent(&content);
aContent = content;
return rv;
}
NS_IMETHODIMP
nsFormControlFrame::GetFont(nsIPresContext* aPresContext,
nsFont& aFont)
{
nsFormControlHelper::GetFont(this, aPresContext, mStyleContext, aFont);
return NS_OK;
}
nsresult nsFormControlFrame::GetDefaultCheckState(PRBool *aState)
{ nsresult res = NS_OK;
nsIDOMHTMLInputElement* inputElement;
if (NS_OK == mContent->QueryInterface(kIDOMHTMLInputElementIID, (void**)&inputElement)) {
res = inputElement->GetDefaultChecked(aState);
NS_RELEASE(inputElement);
}
return res;
}
nsresult nsFormControlFrame::SetDefaultCheckState(PRBool aState)
{
nsresult res = NS_OK;
nsIDOMHTMLInputElement* inputElement;
if (NS_OK == mContent->QueryInterface(kIDOMHTMLInputElementIID, (void**)&inputElement)) {
res = inputElement->SetDefaultChecked(aState);
NS_RELEASE(inputElement);
}
return res;
}
nsresult nsFormControlFrame::GetCurrentCheckState(PRBool *aState)
{
nsresult res = NS_OK;
nsIDOMHTMLInputElement* inputElement;
if (NS_OK == mContent->QueryInterface(kIDOMHTMLInputElementIID, (void**)&inputElement)) {
res = inputElement->GetChecked(aState);
NS_RELEASE(inputElement);
}
return res;
}
nsresult nsFormControlFrame::SetCurrentCheckState(PRBool aState)
{
nsresult res = NS_OK;
nsIDOMHTMLInputElement* inputElement;
if (NS_OK == mContent->QueryInterface(kIDOMHTMLInputElementIID, (void**)&inputElement)) {
inputElement->SetChecked(aState);
NS_RELEASE(inputElement);
}
return res;
}
NS_IMETHODIMP nsFormControlFrame::SetProperty(nsIAtom* aName, const nsString& aValue)
{
return NS_OK;
}
NS_IMETHODIMP nsFormControlFrame::GetProperty(nsIAtom* aName, nsString& aValue)
{
return NS_OK;
}
nsresult nsFormControlFrame::RequiresWidget(PRBool & aRequiresWidget)
{
aRequiresWidget = PR_TRUE;
return NS_OK;
}
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