296 lines
7.9 KiB
C++
296 lines
7.9 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsInputCheckbox.h"
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#include "nsICheckButton.h"
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#include "nsInputFrame.h"
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#include "nsIContent.h"
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#include "prtypes.h"
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#include "nsIFrame.h"
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#include "nsISupports.h"
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#include "nsIAtom.h"
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#include "nsIPresContext.h"
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#include "nsIHTMLContent.h"
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#include "nsHTMLIIDs.h"
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#include "nsWidgetsCID.h"
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#include "nsIView.h"
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#include "nsHTMLAtoms.h"
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#include "nsIStyleContext.h"
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#include "nsStyleUtil.h"
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class nsInputCheckboxFrame : public nsInputFrame {
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public:
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nsInputCheckboxFrame(nsIContent* aContent, nsIFrame* aParentFrame);
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virtual void PostCreateWidget(nsIPresContext* aPresContext, nsIView *aView);
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virtual const nsIID& GetCID();
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virtual const nsIID& GetIID();
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virtual void MouseClicked(nsIPresContext* aPresContext);
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protected:
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virtual ~nsInputCheckboxFrame();
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virtual void GetDesiredSize(nsIPresContext* aPresContext,
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const nsReflowState& aReflowState,
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nsReflowMetrics& aDesiredLayoutSize,
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nsSize& aDesiredWidgetSize);
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};
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nsInputCheckboxFrame::nsInputCheckboxFrame(nsIContent* aContent, nsIFrame* aParentFrame)
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: nsInputFrame(aContent, aParentFrame)
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{
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}
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nsInputCheckboxFrame::~nsInputCheckboxFrame()
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{
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}
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const nsIID&
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nsInputCheckboxFrame::GetIID()
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{
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static NS_DEFINE_IID(kCheckboxIID, NS_ICHECKBUTTON_IID);
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return kCheckboxIID;
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}
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const nsIID&
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nsInputCheckboxFrame::GetCID()
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{
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static NS_DEFINE_IID(kCheckboxCID, NS_CHECKBUTTON_CID);
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return kCheckboxCID;
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}
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void
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nsInputCheckboxFrame::GetDesiredSize(nsIPresContext* aPresContext,
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const nsReflowState& aReflowState,
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nsReflowMetrics& aDesiredLayoutSize,
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nsSize& aDesiredWidgetSize)
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{
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float p2t = aPresContext->GetPixelsToTwips();
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#ifdef XP_PC
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aDesiredWidgetSize.width = NSIntPixelsToTwips(12, p2t);
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aDesiredWidgetSize.height = NSIntPixelsToTwips(12, p2t);
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#endif
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#ifdef XP_PC
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aDesiredWidgetSize.width = NSIntPixelsToTwips(20, p2t);
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aDesiredWidgetSize.height = NSIntPixelsToTwips(20, p2t);
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#endif
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aDesiredLayoutSize.width = aDesiredWidgetSize.width;
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aDesiredLayoutSize.height = aDesiredWidgetSize.height;
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aDesiredLayoutSize.ascent = aDesiredLayoutSize.height;
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aDesiredLayoutSize.descent = 0;
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}
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void
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nsInputCheckboxFrame::PostCreateWidget(nsIPresContext* aPresContext, nsIView *aView)
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{
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// get the intial state of the checkbox
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nsInputCheckbox* content = (nsInputCheckbox *)mContent; // this must be an nsCheckbox
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nsHTMLValue value;
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nsresult result = content->GetAttribute(nsHTMLAtoms::checked, value);
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PRBool checked = (result != NS_CONTENT_ATTR_NOT_THERE) ? PR_TRUE : PR_FALSE;
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// set the widget to the initial state
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nsICheckButton* checkbox;
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if (NS_OK == GetWidget(aView, (nsIWidget **)&checkbox)) {
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checkbox->SetState(checked);
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const nsStyleColor* color =
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nsStyleUtil::FindNonTransparentBackground(mStyleContext);
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if (nsnull != color) {
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checkbox->SetBackgroundColor(color->mBackgroundColor);
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}
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else {
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checkbox->SetBackgroundColor(NS_RGB(0xFF, 0xFF, 0xFF));
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}
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NS_RELEASE(checkbox);
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}
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}
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void
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nsInputCheckboxFrame::MouseClicked(nsIPresContext* aPresContext)
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{
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nsICheckButton* checkbox;
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nsIView* view;
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GetView(view);
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if (NS_OK == GetWidget(view, (nsIWidget **)&checkbox)) {
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PRBool newState = (checkbox->GetState()) ? PR_FALSE : PR_TRUE;
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checkbox->SetState(newState);
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NS_RELEASE(checkbox);
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}
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}
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// nsInputCheckbox
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nsInputCheckbox::nsInputCheckbox(nsIAtom* aTag, nsIFormManager* aManager)
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: nsInput(aTag, aManager)
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{
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mChecked = PR_FALSE;
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}
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nsInputCheckbox::~nsInputCheckbox()
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{
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}
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static void
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MapAttributesInto(nsIHTMLAttributes* aAttributes,
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nsIStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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float p2t = aPresContext->GetPixelsToTwips();
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nscoord pad = NSIntPixelsToTwips(3, p2t);
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// add left and right padding around the radio button via css
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nsStyleSpacing* spacing = (nsStyleSpacing*) aContext->GetMutableStyleData(eStyleStruct_Spacing);
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if (eStyleUnit_Null == spacing->mMargin.GetLeftUnit()) {
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nsStyleCoord left(pad);
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spacing->mMargin.SetLeft(left);
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}
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if (eStyleUnit_Null == spacing->mMargin.GetRightUnit()) {
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nsStyleCoord right(NSIntPixelsToTwips(5, p2t));
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spacing->mMargin.SetRight(right);
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}
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// add bottom padding if backward mode
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// XXX why isn't this working?
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nsCompatibility mode;
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aPresContext->GetCompatibilityMode(mode);
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if (eCompatibility_NavQuirks == mode) {
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if (eStyleUnit_Null == spacing->mMargin.GetBottomUnit()) {
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nsStyleCoord bottom(pad);
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spacing->mMargin.SetBottom(bottom);
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}
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}
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nsInput::MapAttributesInto(aAttributes, aContext, aPresContext);
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}
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NS_IMETHODIMP
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nsInputCheckbox::GetAttributeMappingFunction(nsMapAttributesFunc& aMapFunc) const
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{
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aMapFunc = &MapAttributesInto;
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return NS_OK;
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}
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PRInt32
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nsInputCheckbox::GetMaxNumValues()
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{
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return 1;
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}
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PRBool
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nsInputCheckbox::GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
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nsString* aValues, nsString* aNames)
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{
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if ((aMaxNumValues <= 0) || (nsnull == mName)) {
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return PR_FALSE;
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}
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nsICheckButton* checkBox = (nsICheckButton *)GetWidget();
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PRBool state = checkBox->GetState();
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if(PR_TRUE != state) {
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return PR_FALSE;
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}
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if (nsnull == mValue) {
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aValues[0] = "on";
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} else {
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aValues[0] = *mValue;
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}
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aNames[0] = *mName;
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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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nsInputCheckbox::Reset()
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{
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nsICheckButton* checkbox = (nsICheckButton *)GetWidget();
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if (nsnull != checkbox) {
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checkbox->SetState(mChecked);
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}
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}
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nsresult
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nsInputCheckbox::CreateFrame(nsIPresContext* aPresContext,
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nsIFrame* aParentFrame,
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nsIStyleContext* aStyleContext,
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nsIFrame*& aResult)
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{
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nsIFrame* frame = new nsInputCheckboxFrame(this, aParentFrame);
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if (nsnull == frame) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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frame->SetStyleContext(aPresContext, aStyleContext);
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aResult = frame;
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return NS_OK;
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}
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void nsInputCheckbox::GetType(nsString& aResult) const
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{
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aResult = "checkbox";
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}
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NS_IMETHODIMP
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nsInputCheckbox::SetAttribute(nsIAtom* aAttribute,
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const nsString& aValue,
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PRBool aNotify)
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{
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if (aAttribute == nsHTMLAtoms::checked) {
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mChecked = PR_TRUE;
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}
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return nsInputCheckboxSuper::SetAttribute(aAttribute, aValue, aNotify);
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}
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NS_IMETHODIMP
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nsInputCheckbox::GetAttribute(nsIAtom* aAttribute,
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nsHTMLValue& aResult) const
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{
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aResult.Reset();
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if (aAttribute == nsHTMLAtoms::checked) {
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return GetCacheAttribute(mChecked, aResult, eHTMLUnit_Empty);
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}
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else {
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return nsInputCheckboxSuper::GetAttribute(aAttribute, aResult);
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}
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}
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nsresult
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NS_NewHTMLInputCheckbox(nsIHTMLContent** aInstancePtrResult,
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nsIAtom* aTag, nsIFormManager* aManager)
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{
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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nsIHTMLContent* it = new nsInputCheckbox(aTag, aManager);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(kIHTMLContentIID, (void**) aInstancePtrResult);
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}
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