310 lines
8.3 KiB
C++
310 lines
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsRadioControlFrame.h"
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#include "nsIRadioButton.h"
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#include "nsNativeFormControlFrame.h"
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#include "nsWidgetsCID.h"
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#include "nsIContent.h"
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#include "nsHTMLAtoms.h"
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#include "nsFormFrame.h"
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#include "nsINameSpaceManager.h"
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#include "nsFormFrame.h"
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#include "nsIStatefulFrame.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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static NS_DEFINE_IID(kIRadioControlFrameIID, NS_IRADIOCONTROLFRAME_IID);
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// Frames are not refcounted, no need to AddRef
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NS_IMETHODIMP
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nsRadioControlFrame::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(kIRadioControlFrameIID)) {
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*aInstancePtr = (void*) ((nsIRadioControlFrame*) this);
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return NS_OK;
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}
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if (aIID.Equals(NS_GET_IID(nsIStatefulFrame))) {
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*aInstancePtr = (void*) ((nsIStatefulFrame*) this);
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return NS_OK;
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}
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return nsNativeFormControlFrame::QueryInterface(aIID, aInstancePtr);
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}
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/*
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* FIXME: this ::GetIID() method has no meaning in life and should be
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* removed.
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* Pierre Phaneuf <pp@ludusdesign.com>
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*/
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const nsIID&
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nsRadioControlFrame::GetIID()
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{
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static NS_DEFINE_IID(kIRadioIID, NS_IRADIOBUTTON_IID);
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return kIRadioIID;
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}
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const nsIID&
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nsRadioControlFrame::GetCID()
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{
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static NS_DEFINE_IID(kRadioCID, NS_RADIOBUTTON_CID);
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return kRadioCID;
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}
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void
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nsRadioControlFrame::PostCreateWidget(nsIPresContext* aPresContext, nscoord& aWidth, nscoord& aHeight)
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{
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// set the widget to the initial state
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PRBool checked = PR_FALSE;
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nsresult result = GetDefaultCheckState(&checked);
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if (NS_CONTENT_ATTR_HAS_VALUE == result) {
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if (PR_TRUE == checked)
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SetRadioControlFrameState(aPresContext, NS_STRING_TRUE);
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else
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SetRadioControlFrameState(aPresContext, NS_STRING_FALSE);
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}
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}
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void
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nsRadioControlFrame::MouseUp(nsIPresContext* aPresContext)
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{
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SetRadioControlFrameState(aPresContext, NS_STRING_TRUE);
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if (mFormFrame) {
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// The form frame will determine which radio button needs
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// to be turned off and will call SetChecked on the
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// nsRadioControlFrame to unset the checked state
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mFormFrame->OnRadioChecked(aPresContext, *this);
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}
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}
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PRBool
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nsRadioControlFrame::GetChecked(PRBool aGetInitialValue)
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{
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PRBool checked = PR_FALSE;
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if (PR_TRUE == aGetInitialValue) {
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GetDefaultCheckState(&checked);
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}
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else {
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GetCurrentCheckState(&checked);
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}
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return(checked);
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}
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void
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nsRadioControlFrame::SetChecked(nsIPresContext* aPresContext, PRBool aValue, PRBool aSetInitialValue)
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{
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if (aSetInitialValue) {
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if (aValue) {
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mContent->SetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::checked, nsAutoString("1"), PR_FALSE); // XXX should be "empty" value
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} else {
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mContent->SetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::checked, nsAutoString("0"), PR_FALSE);
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}
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}
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if (PR_TRUE == aValue) {
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SetRadioControlFrameState(aPresContext, NS_STRING_TRUE);
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} else {
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SetRadioControlFrameState(aPresContext, NS_STRING_FALSE);
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}
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}
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PRBool
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nsRadioControlFrame::GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
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nsString* aValues, nsString* aNames)
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{
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nsAutoString name;
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nsresult result = GetName(&name);
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if ((aMaxNumValues <= 0) || (NS_CONTENT_ATTR_HAS_VALUE != result)) {
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return PR_FALSE;
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}
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PRBool state = GetRadioState();
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if(PR_TRUE != state) {
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return PR_FALSE;
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}
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nsAutoString value;
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result = GetValue(&value);
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if (NS_CONTENT_ATTR_HAS_VALUE == result) {
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aValues[0] = value;
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} else {
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aValues[0] = "on";
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}
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aNames[0] = name;
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aNumValues = 1;
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return PR_TRUE;
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}
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void
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nsRadioControlFrame::Reset(nsIPresContext* aPresContext)
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{
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PRBool checked = PR_TRUE;
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GetDefaultCheckState(&checked);
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SetCurrentCheckState(checked);
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}
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#ifdef DEBUG
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NS_IMETHODIMP
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nsRadioControlFrame::GetFrameName(nsString& aResult) const
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{
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return MakeFrameName("RadioControl", aResult);
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}
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#endif
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NS_IMETHODIMP
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nsRadioControlFrame::SetRadioButtonFaceStyleContext(nsIStyleContext *aRadioButtonFaceStyleContext)
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{
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/* for gfx widgets only */
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return NS_OK;
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}
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NS_METHOD
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nsRadioControlFrame::HandleEvent(nsIPresContext* 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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if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
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return NS_OK;
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}
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if (nsFormFrame::GetDisabled(this)) {
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return NS_OK;
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}
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switch(aEvent->message) {
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case NS_KEY_PRESS:
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if (NS_KEY_EVENT == aEvent->eventStructType) {
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nsKeyEvent* keyEvent = (nsKeyEvent*)aEvent;
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if (NS_VK_SPACE == keyEvent->keyCode || NS_VK_RETURN == keyEvent->keyCode) {
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MouseClicked(aPresContext);
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}
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}
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break;
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case NS_MOUSE_LEFT_BUTTON_UP:
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MouseUp(aPresContext);
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break;
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default:
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break;
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}
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return(nsNativeFormControlFrame::HandleEvent(aPresContext, aEvent, aEventStatus));
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}
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void nsRadioControlFrame::GetRadioControlFrameState(nsString& aValue)
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{
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nsFormControlHelper::GetBoolString(GetRadioState(), aValue);
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}
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void nsRadioControlFrame::SetRadioControlFrameState(nsIPresContext* aPresContext,
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const nsString& aValue)
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{
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PRBool state = nsFormControlHelper::GetBool(aValue);
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SetRadioState(aPresContext, state);
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}
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NS_IMETHODIMP nsRadioControlFrame::SetProperty(nsIPresContext* aPresContext, nsIAtom* aName, const nsString& aValue)
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{
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if (nsHTMLAtoms::checked == aName) {
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// Set the current state for the radio button because
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// the mFormFrame->OnRadioChecked will not set it.
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SetRadioControlFrameState(aPresContext, aValue);
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if (mFormFrame) {
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PRBool state = (aValue == NS_STRING_TRUE) ? PR_TRUE : PR_FALSE;
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mFormFrame->OnRadioChecked(aPresContext, *this, state);
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}
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}
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else {
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return nsNativeFormControlFrame::SetProperty(aPresContext, aName, aValue);
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsRadioControlFrame::GetProperty(nsIAtom* aName, nsString& aValue)
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{
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// Return the value of the property from the widget it is not null.
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// If is null, assume the widget is GFX-rendered and return a member variable instead.
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if (nsHTMLAtoms::checked == aName) {
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GetRadioControlFrameState(aValue);
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}
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else {
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return nsNativeFormControlFrame::GetProperty(aName, aValue);
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}
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return NS_OK;
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}
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nsresult nsRadioControlFrame::RequiresWidget(PRBool& aRequiresWidget)
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{
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aRequiresWidget = PR_FALSE;
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return NS_OK;
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}
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//----------------------------------------------------------------------
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// nsIStatefulFrame
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//----------------------------------------------------------------------
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NS_IMETHODIMP
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nsRadioControlFrame::GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType)
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{
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*aStateType = nsIStatefulFrame::eRadioType;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsRadioControlFrame::SaveState(nsIPresContext* aPresContext, nsIPresState** aState)
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{
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// Construct a pres state.
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NS_NewPresState(aState); // The addref happens here.
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// This string will hold a single item, whether or not we're checked.
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nsAutoString stateString;
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GetRadioControlFrameState(stateString);
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(*aState)->SetStateProperty("checked", stateString);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsRadioControlFrame::RestoreState(nsIPresContext* aPresContext, nsIPresState* aState)
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{
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nsAutoString string;
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aState->GetStateProperty("checked", string);
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SetRadioControlFrameState(aPresContext, string);
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return NS_OK;
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}
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