gecko-dev/layout/forms/nsGfxRadioControlFrame.cpp

433 lines
14 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 "nsGfxRadioControlFrame.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLParts.h"
#include "nsFormFrame.h"
#include "nsIFormControl.h"
#include "nsIContent.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
#include "nsCOMPtr.h"
#include "nsCSSRendering.h"
#include "nsIPresState.h"
#include "nsINameSpaceManager.h"
nsresult
NS_NewGfxRadioControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsGfxRadioControlFrame* it = new (aPresShell) nsGfxRadioControlFrame;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
nsGfxRadioControlFrame::nsGfxRadioControlFrame()
{
// Initialize GFX-rendered state
mChecked = PR_FALSE;
mRadioButtonFaceStyle = nsnull;
}
nsGfxRadioControlFrame::~nsGfxRadioControlFrame()
{
NS_IF_RELEASE(mRadioButtonFaceStyle);
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsGfxRadioControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsIRadioControlFrame))) {
*aInstancePtr = (void*) ((nsIRadioControlFrame*) this);
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIStatefulFrame))) {
*aInstancePtr = (void*) ((nsIStatefulFrame*) this);
return NS_OK;
}
return nsFormControlFrame::QueryInterface(aIID, aInstancePtr);
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::GetAdditionalStyleContext(PRInt32 aIndex,
nsIStyleContext** aStyleContext) const
{
NS_PRECONDITION(nsnull != aStyleContext, "null OUT parameter pointer");
if (aIndex < 0) {
return NS_ERROR_INVALID_ARG;
}
*aStyleContext = nsnull;
switch (aIndex) {
case NS_GFX_RADIO_CONTROL_FRAME_FACE_CONTEXT_INDEX:
*aStyleContext = mRadioButtonFaceStyle;
NS_IF_ADDREF(*aStyleContext);
break;
default:
return NS_ERROR_INVALID_ARG;
}
return NS_OK;
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::SetAdditionalStyleContext(PRInt32 aIndex,
nsIStyleContext* aStyleContext)
{
if (aIndex < 0) {
return NS_ERROR_INVALID_ARG;
}
switch (aIndex) {
case NS_GFX_RADIO_CONTROL_FRAME_FACE_CONTEXT_INDEX:
NS_IF_RELEASE(mRadioButtonFaceStyle);
mRadioButtonFaceStyle = aStyleContext;
NS_IF_ADDREF(aStyleContext);
break;
}
return NS_OK;
}
//--------------------------------------------------------------
NS_IMETHODIMP nsGfxRadioControlFrame::SetProperty(nsIPresContext* aPresContext, nsIAtom* aName, const nsString& aValue)
{
if (nsHTMLAtoms::checked == aName) {
PRBool state = (aValue.EqualsWithConversion(NS_STRING_TRUE)) ? PR_TRUE : PR_FALSE;
// if there is no form than the radiobtn is an orphan
if (mFormFrame) {
// if this failed then it didn't have a named radio group
if (NS_FAILED(mFormFrame->OnRadioChecked(aPresContext, *this, state))) {
// The line below is commented out to duplicate NavQuirks behavior
//SetRadioState(aPresContext, state);
}
} else {
SetRadioState(aPresContext, state);
}
}
else {
return nsFormControlFrame::SetProperty(aPresContext, aName, aValue);
}
return NS_OK;
}
//--------------------------------------------------------------
NS_IMETHODIMP nsGfxRadioControlFrame::GetProperty(nsIAtom* aName, nsString& aValue)
{
// Return the value of the property from the widget it is not null.
// If is null, assume the widget is GFX-rendered and return a member variable instead.
if (nsHTMLAtoms::checked == aName) {
nsFormControlHelper::GetBoolString(GetRadioState(), aValue);
} else {
return nsFormControlFrame::GetProperty(aName, aValue);
}
return NS_OK;
}
//--------------------------------------------------------------
PRBool
nsGfxRadioControlFrame::GetChecked()
{
PRBool checked = PR_FALSE;
GetCurrentCheckState(&checked);
return(checked);
}
//--------------------------------------------------------------
PRBool
nsGfxRadioControlFrame::GetDefaultChecked()
{
PRBool checked = PR_FALSE;
GetDefaultCheckState(&checked);
return(checked);
}
//--------------------------------------------------------------
void
nsGfxRadioControlFrame::SetChecked(nsIPresContext* aPresContext, PRBool aValue, PRBool aSetInitialValue)
{
if (aSetInitialValue) {
if (aValue) {
mContent->SetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::checked, NS_ConvertASCIItoUCS2("1"), PR_FALSE); // XXX should be "empty" value
} else {
mContent->SetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::checked, NS_ConvertASCIItoUCS2("0"), PR_FALSE);
}
}
SetRadioState(aPresContext, aValue);
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::SetRadioButtonFaceStyleContext(nsIStyleContext *aRadioButtonFaceStyleContext)
{
mRadioButtonFaceStyle = aRadioButtonFaceStyleContext;
NS_ADDREF(mRadioButtonFaceStyle);
return NS_OK;
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::SetIsInClickEvent(PRBool aVal)
{
mInClickEvent = aVal;
return NS_OK;
}
//--------------------------------------------------------------
PRBool
nsGfxRadioControlFrame::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;
}
PRBool state = GetRadioState();
if(PR_TRUE != state) {
return PR_FALSE;
}
nsAutoString value;
result = GetValue(&value);
if (NS_CONTENT_ATTR_HAS_VALUE == result) {
aValues[0] = value;
} else {
aValues[0].AssignWithConversion("on");
}
aNames[0] = name;
aNumValues = 1;
return PR_TRUE;
}
//--------------------------------------------------------------
void
nsGfxRadioControlFrame::Reset(nsIPresContext* aPresContext)
{
PRBool checked = PR_TRUE;
GetDefaultCheckState(&checked);
SetCurrentCheckState(checked);
}
NS_IMETHODIMP
nsGfxRadioControlFrame::HandleEvent(nsIPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
// Check for user-input:none style
const nsStyleUserInterface* uiStyle;
GetStyleData(eStyleStruct_UserInterface, (const nsStyleUserInterface *&)uiStyle);
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
// otherwise, do nothing. Events are handled by the DOM.
return NS_OK;
}
//--------------------------------------------------------------
void
nsGfxRadioControlFrame::PaintRadioButton(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect)
{
PRBool checked = PR_TRUE;
GetCurrentCheckState(&checked); // Get check state from the content model
if (PR_TRUE == checked) {
// Paint the button for the radio button using CSS background rendering code
if (nsnull != mRadioButtonFaceStyle) {
const nsStyleColor* myColor = (const nsStyleColor*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Color);
const nsStyleSpacing* mySpacing = (const nsStyleSpacing*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Spacing);
const nsStylePosition* myPosition = (const nsStylePosition*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Position);
nscoord width = myPosition->mWidth.GetCoordValue();
nscoord height = myPosition->mHeight.GetCoordValue();
// Position the button centered within the radio control's rectangle.
nscoord x = (mRect.width - width) / 2;
nscoord y = (mRect.height - height) / 2;
nsRect rect(x, y, width, height);
// So we will use the PaintBackground to paint the dot,
// but it uses the mBackgroundColor for painting and we need to use the mColor
// so create a temporary style color struct and set it up appropriately
nsStyleColor tmpColor = *myColor;
tmpColor.mBackgroundColor = myColor->mColor;
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
aDirtyRect, rect, tmpColor, *mySpacing, 0, 0);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *mySpacing, mRadioButtonFaceStyle, 0);
}
}
}
//--------------------------------------------------------------
NS_METHOD
nsGfxRadioControlFrame::Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
const nsStyleDisplay* disp = (const nsStyleDisplay*)
mStyleContext->GetStyleData(eStyleStruct_Display);
if (!disp->IsVisible())
return NS_OK;
// Paint the background
nsFormControlFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer) {
PaintRadioButton(aPresContext, aRenderingContext, aDirtyRect);
}
// Call to the base class to draw selection borders when appropriate
return nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
}
//--------------------------------------------------------------
PRBool nsGfxRadioControlFrame::GetRadioState()
{
// If we are processing an onclick event then
// always return the opposite value
// additional explanantion is in nsIRadioControlFrame or nsHTMLInputElement.cpp
if (mInClickEvent) {
return !mChecked;
}
return mChecked;
}
//--------------------------------------------------------------
void nsGfxRadioControlFrame::SetRadioState(nsIPresContext* aPresContext, PRBool aValue)
{
mChecked = aValue;
nsFormControlHelper::ForceDrawFrame(aPresContext, this);
}
void
nsGfxRadioControlFrame::InitializeControl(nsIPresContext* aPresContext)
{
nsFormControlFrame::InitializeControl(aPresContext);
// set the widget to the initial state
PRBool checked = PR_FALSE;
nsresult result = GetDefaultCheckState(&checked);
if (NS_CONTENT_ATTR_HAS_VALUE == result) {
SetRadioState(aPresContext, checked);
}
}
//----------------------------------------------------------------------
// nsIStatefulFrame
//----------------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType)
{
*aStateType = nsIStatefulFrame::eRadioType;
return NS_OK;
}
//----------------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::SaveState(nsIPresContext* aPresContext, nsIPresState** aState)
{
// Construct a pres state.
NS_NewPresState(aState); // The addref happens here.
// This string will hold a single item, whether or not we're checked.
nsAutoString stateString;
nsFormControlHelper::GetBoolString(GetRadioState(), stateString);
(*aState)->SetStateProperty(NS_ConvertASCIItoUCS2("checked"), stateString);
return NS_OK;
}
//----------------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::RestoreState(nsIPresContext* aPresContext, nsIPresState* aState)
{
if (!mDidInit) {
mPresContext = aPresContext;
InitializeControl(aPresContext);
mDidInit = PR_TRUE;
}
mIsRestored = PR_TRUE;
nsAutoString string;
aState->GetStateProperty(NS_ConvertASCIItoUCS2("checked"), string);
PRBool state = (string.EqualsWithConversion(NS_STRING_TRUE)) ? PR_TRUE : PR_FALSE;
SetRadioState(aPresContext, state); // sets mChecked
mRestoredChecked = mChecked;
return NS_OK;
}
//----------------------------------------------------------------------
// Extra Debug Helper Methods
//----------------------------------------------------------------------
#ifdef DEBUG_rodsXXX
NS_IMETHODIMP
nsGfxRadioControlFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsGfxRadioControlFrame", aReflowState.reason);
nsresult rv = nsNativeFormControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
COMPARE_QUIRK_SIZE("nsGfxRadioControlFrame", 12, 11)
return rv;
}
#endif