pjs/layout/forms/nsGfxButtonControlFrame.cpp

229 строки
6.3 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 1.0 (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 "nsGfxButtonControlFrame.h"
#include "nsIButton.h"
#include "nsWidgetsCID.h"
static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
static NS_DEFINE_IID(kIButtonIID, NS_IBUTTON_IID);
const nscoord kSuggestedNotSet = -1;
nsGfxButtonControlFrame::nsGfxButtonControlFrame()
{
mRenderer.SetNameSpace(kNameSpaceID_None);
mSuggestedWidth = kSuggestedNotSet;
mSuggestedHeight = kSuggestedNotSet;
}
PRBool
nsGfxButtonControlFrame::IsSuccessful(nsIFormControlFrame* aSubmitter)
{
PRInt32 type;
GetType(&type);
if ((NS_FORM_INPUT_HIDDEN == type) || (this == aSubmitter)) {
// Can not use the nsHTMLButtonControlFrame::IsSuccessful because
// it will fail it's test of (this==aSubmitter)
nsAutoString name;
return (NS_CONTENT_ATTR_HAS_VALUE == GetName(&name));
} else {
return PR_FALSE;
}
}
PRInt32
nsGfxButtonControlFrame::GetMaxNumValues()
{
PRInt32 type;
GetType(&type);
if ((NS_FORM_INPUT_SUBMIT == type) || (NS_FORM_INPUT_HIDDEN == type)) {
return 1;
} else {
return 0;
}
}
PRBool
nsGfxButtonControlFrame::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;
}
PRInt32 type;
GetType(&type);
if (NS_FORM_INPUT_RESET == type) {
aNumValues = 0;
return PR_FALSE;
} else {
nsAutoString value;
GetValue(&value);
aValues[0] = value;
aNames[0] = name;
aNumValues = 1;
return PR_TRUE;
}
}
nsresult
NS_NewGfxButtonControlFrame(nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsGfxButtonControlFrame* it = new nsGfxButtonControlFrame;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
void
nsGfxButtonControlFrame::MouseClicked(nsIPresContext* aPresContext)
{
PRInt32 type;
GetType(&type);
if ((nsnull != mFormFrame) && !nsFormFrame::GetDisabled(this)) {
nsEventStatus status = nsEventStatus_eIgnore;
nsEvent event;
event.eventStructType = NS_EVENT;
nsIContent *formContent = nsnull;
mFormFrame->GetContent(&formContent);
switch(type) {
case NS_FORM_INPUT_RESET:
event.message = NS_FORM_RESET;
if (nsnull != formContent) {
formContent->HandleDOMEvent(*aPresContext, &event, nsnull, NS_EVENT_FLAG_INIT, status);
}
if (nsEventStatus_eConsumeNoDefault != status) {
mFormFrame->OnReset();
}
break;
case NS_FORM_INPUT_SUBMIT:
event.message = NS_FORM_SUBMIT;
if (nsnull != formContent) {
formContent->HandleDOMEvent(*aPresContext, &event, nsnull, NS_EVENT_FLAG_INIT, status);
}
if (nsEventStatus_eConsumeNoDefault != status) {
mFormFrame->OnSubmit(aPresContext, this);
}
}
NS_IF_RELEASE(formContent);
}
}
const nsIID&
nsGfxButtonControlFrame::GetIID()
{
static NS_DEFINE_IID(kButtonIID, NS_IBUTTON_IID);
return kButtonIID;
}
const nsIID&
nsGfxButtonControlFrame::GetCID()
{
static NS_DEFINE_IID(kButtonCID, NS_BUTTON_CID);
return kButtonCID;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("ButtonControl", aResult);
}
NS_IMETHODIMP
nsGfxButtonControlFrame::Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
if (!mFormFrame && (eReflowReason_Initial == aReflowState.reason)) {
nsFormFrame::AddFormControlFrame(aPresContext, *this);
}
if ((kSuggestedNotSet != mSuggestedWidth) ||
(kSuggestedNotSet != mSuggestedHeight))
{
nsHTMLReflowState suggestedReflowState(aReflowState);
// Honor the suggested width and/or height.
if (kSuggestedNotSet != mSuggestedWidth) {
suggestedReflowState.mComputedWidth = mSuggestedWidth;
suggestedReflowState.mComputedWidth -= aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right;
}
if (kSuggestedNotSet != mSuggestedHeight) {
suggestedReflowState.mComputedHeight = mSuggestedHeight;
suggestedReflowState.mComputedHeight -= aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
}
return nsHTMLButtonControlFrame::Reflow(aPresContext, aDesiredSize, suggestedReflowState, aStatus);
} else {
// Normal reflow.
return nsHTMLButtonControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
}
NS_IMETHODIMP
nsGfxButtonControlFrame::SetSuggestedSize(nscoord aWidth, nscoord aHeight)
{
mSuggestedWidth = aWidth;
mSuggestedHeight = aHeight;
return NS_OK;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
// Override the HandleEvent to prevent the nsFrame::HandleEvent
// from being called. The nsFrame::HandleEvent causes the button label
// to be selected (Drawn with an XOR rectangle over the label)
// if disabled do nothing
if (mRenderer.isDisabled()) {
return NS_OK;
}
// lets see if the button was clicked
switch (aEvent->message) {
case NS_MOUSE_LEFT_CLICK:
MouseClicked(&aPresContext);
break;
}
return NS_OK;
}