gecko-dev/layout/forms/nsFormControlFrame.cpp
2000-01-25 15:25:46 +00:00

643 lines
19 KiB
C++

/* -*- 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 "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()
{
mDidInit = PR_FALSE;
mFormFrame = nsnull;
mSuggestedWidth = NS_FORMSIZE_NOTSET;
mSuggestedHeight = NS_FORMSIZE_NOTSET;
// Reflow Optimization
mCacheSize.width = -1;
mCacheSize.height = -1;
mCachedMaxElementSize.width = -1;
mCachedMaxElementSize.height = -1;
}
nsFormControlFrame::~nsFormControlFrame()
{
if (mFormFrame) {
mFormFrame->RemoveFormControlFrame(*this);
// This method only removes from radio lists if we are a radio input
mFormFrame->RemoveRadioControlFrame(this);
mFormFrame = nsnull;
}
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
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);
}
void nsFormControlFrame::SetupCachedSizes(nsSize& aCacheSize,
nsSize& aCachedMaxElementSize,
nsHTMLReflowMetrics& aDesiredSize)
{
aCacheSize.width = aDesiredSize.width;
aCacheSize.height = aDesiredSize.height;
if (aDesiredSize.maxElementSize != nsnull) {
aCachedMaxElementSize.width = aDesiredSize.maxElementSize->width;
aCachedMaxElementSize.height = aDesiredSize.maxElementSize->height;
}
}
nsresult nsFormControlFrame::SkipResizeReflow(nsSize& aCacheSize,
nsSize& aCachedMaxElementSize,
nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
#if 1
if (aReflowState.reason == eReflowReason_Resize) {
if (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedWidth &&
NS_UNCONSTRAINEDSIZE == aReflowState.mComputedHeight) {
if (aCacheSize.width > -1 && aCacheSize.height > -1) {
aDesiredSize.width = aCacheSize.width;
aDesiredSize.height = aCacheSize.height;
if (aDesiredSize.maxElementSize != nsnull) {
aDesiredSize.maxElementSize->width = aCachedMaxElementSize.width;
aDesiredSize.maxElementSize->height = aCachedMaxElementSize.height;
}
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
} else {
if (aCacheSize.width == aReflowState.mComputedWidth &&
aCacheSize.height == aReflowState.mComputedHeight) {
aDesiredSize.width = aCacheSize.width;
aDesiredSize.height = aCacheSize.height;
if (aDesiredSize.maxElementSize != nsnull) {
aDesiredSize.maxElementSize->width = aCachedMaxElementSize.width;
aDesiredSize.maxElementSize->height = aCachedMaxElementSize.height;
}
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
}
}
#endif
return NS_ERROR_FAILURE;
}
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(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerHeight) const
{
return NSIntPixelsToTwips(3, aPixToTwip);
}
nscoord
nsFormControlFrame::GetHorizontalInsidePadding(nsIPresContext* aPresContext,
float aPixToTwip,
nscoord aInnerWidth,
nscoord aCharWidth) const
{
return GetVerticalInsidePadding(aPresContext, 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(aPresContext, &view);
if (view) {
const nsStyleDisplay* display;
GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)display));
nsViewVisibility newVis = NS_STYLE_VISIBILITY_VISIBLE == display->mVisible ? nsViewVisibility_kShow : nsViewVisibility_kHide;
nsViewVisibility oldVis;
// only change if different.
view->GetVisibility(oldVis);
if (newVis != oldVis)
view->SetVisibility(newVis);
}
}
return rv;
}
NS_IMETHODIMP
nsFormControlFrame::SetInitialChildList(nsIPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
return NS_OK;
}
NS_METHOD
nsFormControlFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
// add ourself as an nsIFormControlFrame
if (!mFormFrame && (eReflowReason_Initial == aReflowState.reason)) {
nsFormFrame::AddFormControlFrame(aPresContext, *NS_STATIC_CAST(nsIFrame*, this));
}
nsresult skiprv = SkipResizeReflow(mCacheSize, mCachedMaxElementSize, aPresContext,
aDesiredSize, aReflowState, aStatus);
if (NS_SUCCEEDED(skiprv)) {
return skiprv;
}
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
if (eWidgetRendering_Native == mode) {
GetDesiredSize(aPresContext, aReflowState, aDesiredSize, mWidgetSize);
if (!mDidInit) {
PostCreateWidget(aPresContext, aDesiredSize.width, aDesiredSize.height);
mDidInit = PR_TRUE;
}
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
} else {
nsresult rv = nsLeafFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
if (!mDidInit) {
//GetDesiredSize(aPresContext, aReflowState, aDesiredSize);
PostCreateWidget(aPresContext, aDesiredSize.width, aDesiredSize.height);
mDidInit = PR_TRUE;
}
return rv;
}
aStatus = NS_FRAME_COMPLETE;
SetupCachedSizes(mCacheSize, mCachedMaxElementSize, aDesiredSize);
return NS_OK;
}
nsWidgetInitData*
nsFormControlFrame::GetWidgetInitData(nsIPresContext* aPresContext)
{
return nsnull;
}
void
nsFormControlFrame::PostCreateWidget(nsIPresContext* aPresContext, nscoord& aWidth, nscoord& aHeight)
{
}
void
nsFormControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
{
}
void
nsFormControlFrame::ScrollIntoView(nsIPresContext* aPresContext)
{
if (aPresContext) {
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
presShell->ScrollFrameIntoView(this,
NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE,NS_PRESSHELL_SCROLL_IF_NOT_VISIBLE);
}
}
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)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
return NS_OK;
}
// if not native then use the NS_MOUSE_LEFT_CLICK to see if pressed
// unfortunately native widgets don't seem to handle this right.
// so use the old code for native stuff. -EDV
switch (aEvent->message) {
case NS_MOUSE_LEFT_CLICK:
MouseClicked(aPresContext);
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.mComputedWidth != NS_INTRINSICSIZE) {
aSize.width = aReflowState.mComputedWidth;
}
else {
aSize.width = CSS_NOTSET;
}
if (aReflowState.mComputedHeight != NS_INTRINSICSIZE) {
aSize.height = aReflowState.mComputedHeight;
}
else {
aSize.height = CSS_NOTSET;
}
}
void
nsFormControlFrame::Reset(nsIPresContext* aPresContext)
{
}
NS_IMETHODIMP
nsFormControlFrame::GetFormContent(nsIContent*& aContent) const
{
nsIContent* content;
nsresult rv;
rv = GetContent(&content);
aContent = content;
return rv;
}
NS_IMETHODIMP
nsFormControlFrame::GetFont(nsIPresContext* aPresContext,
const nsFont*& aFont)
{
return nsFormControlHelper::GetFont(this, aPresContext, mStyleContext, aFont);
}
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(nsIPresContext* aPresContext, 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;
}
NS_IMETHODIMP
nsFormControlFrame::SetSuggestedSize(nscoord aWidth, nscoord aHeight)
{
mSuggestedWidth = aWidth;
mSuggestedHeight = aHeight;
return NS_OK;
}