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gecko-dev/layout/forms/nsGfxButtonControlFrame.cpp

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/* -*- 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 "nsGfxButtonControlFrame.h"
#include "nsIButton.h"
#include "nsWidgetsCID.h"
#include "nsIFontMetrics.h"
#include "nsFormControlFrame.h"
#include "nsISupportsArray.h"
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(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsGfxButtonControlFrame* it = new (aPresShell) nsGfxButtonControlFrame;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
PRBool
nsGfxButtonControlFrame::IsReset(PRInt32 type)
{
if (NS_FORM_INPUT_RESET == type) {
return PR_TRUE;
} else {
return PR_FALSE;
}
}
PRBool
nsGfxButtonControlFrame::IsSubmit(PRInt32 type)
{
if (NS_FORM_INPUT_SUBMIT == type) {
return PR_TRUE;
} else {
return PR_FALSE;
}
}
// Special check for the browse button of a file input.
//
// Since this is actually type "NS_FORM_INPUT_BUTTON", we
// can't tell if it is part of a file input by the type.
// We'll return PR_TRUE if either:
// (a) type is NS_FORM_BROWSE or
// (b) type is NS_FORM_INPUT_BUTTON and our parent is a file input
PRBool
nsGfxButtonControlFrame::IsBrowse(PRInt32 type)
{
PRBool rv = PR_FALSE;
if (NS_FORM_BROWSE == type) {
rv = PR_TRUE;
}
else if (NS_FORM_INPUT_BUTTON == type) {
// Check to see if parent is a file input
nsresult result;
nsCOMPtr<nsIContent> parentContent;
result = mContent->GetParent(*getter_AddRefs(parentContent));
if (NS_SUCCEEDED(result) && parentContent) {
nsCOMPtr<nsIAtom> atom;
result = parentContent->GetTag(*getter_AddRefs(atom));
if (NS_SUCCEEDED(result) && atom) {
if (atom.get() == nsHTMLAtoms::input) {
// It's an input, is it a file input?
nsAutoString value;
if (NS_CONTENT_ATTR_HAS_VALUE == parentContent->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::type, value)) {
if (value.EqualsIgnoreCase("file")) {
rv = PR_TRUE;
}
}
}
}
}
}
return rv;
}
/*
* FIXME: this ::GetIID() method has no meaning in life and should be
* removed.
* Pierre Phaneuf <pp@ludusdesign.com>
*/
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;
}
#ifdef DEBUG
NS_IMETHODIMP
nsGfxButtonControlFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("ButtonControl", aResult);
}
#endif
NS_IMETHODIMP
nsGfxButtonControlFrame::AddComputedBorderPaddingToDesiredSize(nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aSuggestedReflowState)
{
if (kSuggestedNotSet == mSuggestedWidth) {
aDesiredSize.width += aSuggestedReflowState.mComputedBorderPadding.left + aSuggestedReflowState.mComputedBorderPadding.right;
}
if (kSuggestedNotSet == mSuggestedHeight) {
aDesiredSize.height += aSuggestedReflowState.mComputedBorderPadding.top + aSuggestedReflowState.mComputedBorderPadding.bottom;
}
return NS_OK;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::DoNavQuirksReflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
nsIFrame* firstKid = mFrames.FirstChild();
nsCOMPtr<nsIFontMetrics> fontMet;
nsresult res = nsFormControlHelper::GetFrameFontFM(aPresContext, (nsIFormControlFrame *)this, getter_AddRefs(fontMet));
nsSize desiredSize;
if (NS_SUCCEEDED(res) && fontMet) {
aReflowState.rendContext->SetFont(fontMet);
// Get the text from the "value" attribute
// for measuring the height, width of the text
nsAutoString value;
GetValue(&value);
if (value.Length() == 0) {
// Generate localized label.
// We can't make any assumption as to what the default would be
// because the value is localized for non-english platforms, thus
// it might not be the string "Reset", "Submit Query", or "Browse..."
res = GetDefaultLabel(value);
if (NS_FAILED(res)) {
return res;
}
}
const nsStyleText* textStyle;
GetStyleData(eStyleStruct_Text, (const nsStyleStruct *&)textStyle);
if (!textStyle->WhiteSpaceIsSignificant()) {
value.CompressWhitespace();
if (value.Length() == 0) {
value.AssignWithConversion(" ");
}
}
nsInputDimensionSpec btnSpec(NULL, PR_FALSE, nsnull,
&value,0,
PR_FALSE, NULL, 1);
nsFormControlHelper::CalcNavQuirkSizing(aPresContext, aReflowState.rendContext,
fontMet, (nsIFormControlFrame*)this,
btnSpec, desiredSize);
// This calculates the reflow size
// get the css size and let the frame use or override it
nsSize styleSize;
nsFormControlFrame::GetStyleSize(aPresContext, aReflowState, styleSize);
if (CSS_NOTSET != styleSize.width) { // css provides width
NS_ASSERTION(styleSize.width >= 0, "form control's computed width is < 0");
if (NS_INTRINSICSIZE != styleSize.width) {
desiredSize.width = styleSize.width;
desiredSize.width += aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
}
}
if (CSS_NOTSET != styleSize.height) { // css provides height
NS_ASSERTION(styleSize.height > 0, "form control's computed height is <= 0");
if (NS_INTRINSICSIZE != styleSize.height) {
desiredSize.height = styleSize.height;
desiredSize.height += aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right;
}
}
aDesiredSize.width = desiredSize.width;
aDesiredSize.height = desiredSize.height;
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
} else {
// XXX ASSERT HERE
desiredSize.width = 0;
desiredSize.height = 0;
}
// get border and padding
/*const nsStyleSpacing* spacing;
GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
nsMargin borderPadding;
borderPadding.SizeTo(0, 0, 0, 0);
spacing->CalcBorderPaddingFor(this, borderPadding);
*/
// remove it from the the desired size
// because the content need to fit inside of it
desiredSize.width -= (aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
desiredSize.height -= (aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
// now reflow the first child (genertaed content)
nsHTMLReflowState reflowState(aPresContext, aReflowState, firstKid, desiredSize);
reflowState.mComputedWidth = desiredSize.width;
reflowState.mComputedHeight = desiredSize.height;
// XXX Proper handling of incremental reflow...
if (eReflowReason_Incremental == aReflowState.reason) {
nsIFrame* targetFrame;
// See if it's targeted at us
aReflowState.reflowCommand->GetTarget(targetFrame);
if (this == targetFrame) {
Invalidate(aPresContext, nsRect(0,0,mRect.width,mRect.height), PR_FALSE);
nsIReflowCommand::ReflowType reflowType;
aReflowState.reflowCommand->GetType(reflowType);
if (nsIReflowCommand::StyleChanged == reflowType) {
reflowState.reason = eReflowReason_StyleChange;
}
else {
reflowState.reason = eReflowReason_Resize;
}
} else {
nsIFrame* nextFrame;
// Remove the next frame from the reflow path
aReflowState.reflowCommand->GetNext(nextFrame);
}
}
nsHTMLReflowMetrics childReflowMetrics(aDesiredSize);
nsRect kidRect;
firstKid->GetRect(kidRect);
ReflowChild(firstKid, aPresContext, childReflowMetrics, reflowState, kidRect.x, kidRect.y, 0, aStatus);
// Now do the reverse calculation of the
// NavQuirks button to get the size of the text
//nscoord textWidth = (2 * aDesiredSize.width) / 3;
nscoord textHeight = (2 * aDesiredSize.height) / 3;
// Center the child and add back in the border and badding
// our inner area frame is already doing centering so we only need to center vertically.
nsRect rect = nsRect(aReflowState.mComputedBorderPadding.left,
((desiredSize.height - textHeight)/2) + aReflowState.mComputedBorderPadding.top,
desiredSize.width,
desiredSize.height);
firstKid->SetRect(aPresContext, rect);
return NS_OK;
}
// Create the text content used as label for the button.
// The frame will be generated by the frame constructor.
NS_IMETHODIMP
nsGfxButtonControlFrame::CreateAnonymousContent(nsIPresContext* aPresContext,
nsISupportsArray& aChildList)
{
nsresult result;
// Get the text from the "value" attribute.
// If it is zero length, set it to a default value (localized)
nsAutoString initvalue, value;
GetValue(&initvalue);
value = initvalue;
if (value.Length() == 0) {
// Generate localized label.
// We can't make any assumption as to what the default would be
// because the value is localized for non-english platforms, thus
// it might not be the string "Reset", "Submit Query", or "Browse..."
result = GetDefaultLabel(value);
if (NS_FAILED(result)) {
return result;
}
}
// Compress whitespace out of label if needed.
const nsStyleText* textStyle;
GetStyleData(eStyleStruct_Text, (const nsStyleStruct *&)textStyle);
if (!textStyle->WhiteSpaceIsSignificant()) {
value.CompressWhitespace();
if (value.Length() == 0) {
value.AssignWithConversion(" ");
}
}
// Add a child text content node for the label
nsCOMPtr<nsIContent> labelContent;
result = NS_NewTextNode(getter_AddRefs(labelContent));
if (NS_SUCCEEDED(result) && labelContent) {
// set the value of the text node and add it to the child list
mTextContent = do_QueryInterface(labelContent, &result);
if (NS_SUCCEEDED(result) && mTextContent) {
mTextContent->SetText(value.GetUnicode(), value.Length(), PR_TRUE);
aChildList.AppendElement(mTextContent);
}
}
return result;
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsGfxButtonControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
} else if (aIID.Equals(NS_GET_IID(nsIAnonymousContentCreator))) {
*aInstancePtr = (void*)(nsIAnonymousContentCreator*) this;
return NS_OK;
}
return nsHTMLButtonControlFrame::QueryInterface(aIID, aInstancePtr);
}
// Initially we hardcoded the default strings here.
// Next, we used html.css to store the default label for various types
// of buttons. (nsGfxButtonControlFrame::DoNavQuirksReflow rev 1.20)
// However, since html.css is not internationalized, we now grab the default
// label from a string bundle as is done for all other UI strings.
// See bug 16999 for further details.
NS_IMETHODIMP
nsGfxButtonControlFrame::GetDefaultLabel(nsString& aString)
{
nsresult rv = NS_OK;
PRInt32 type;
GetType(&type);
if (IsReset(type)) {
rv = nsFormControlHelper::GetLocalizedString("Reset", aString);
}
else if (IsSubmit(type)) {
rv = nsFormControlHelper::GetLocalizedString("Submit", aString);
}
else if (IsBrowse(type)) {
rv = nsFormControlHelper::GetLocalizedString("Browse", aString);
}
else {
aString.AssignWithConversion(" ");
rv = NS_OK;
}
return rv;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint)
{
nsresult rv = NS_OK;
// If the value attribute is set, update the text of the label
if (nsHTMLAtoms::value == aAttribute) {
nsAutoString value;
if (mTextContent && mContent) {
if (NS_CONTENT_ATTR_HAS_VALUE != mContent->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::value, value)) {
value.SetLength(0);
}
rv = mTextContent->SetText(value.GetUnicode(), value.Length(), PR_TRUE);
} else {
rv = NS_ERROR_UNEXPECTED;
}
// defer to HTMLButtonControlFrame
} else {
rv = nsHTMLButtonControlFrame::AttributeChanged(aPresContext, aChild, aNameSpaceID, aAttribute, aHint);
}
return rv;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsGfxButtonControlFrame", aReflowState.reason);
// The mFormFrame is set in the initial reflow within nsHTMLButtonControlFrame
nsresult rv = NS_OK;
if (eReflowReason_Initial == aReflowState.reason) {
if (!mFormFrame) {
nsFormFrame::AddFormControlFrame(aPresContext, *NS_STATIC_CAST(nsIFrame*, this));
}
}
#if 0
nsresult skiprv = nsFormControlFrame::SkipResizeReflow(mCacheSize, mCachedMaxElementSize, aPresContext,
aDesiredSize, aReflowState, aStatus);
if (NS_SUCCEEDED(skiprv)) {
return skiprv;
}
#endif
PRInt32 type;
GetType(&type);
// hidden inputs are zero width/height and are finished here
if (NS_FORM_INPUT_HIDDEN == type) {
aDesiredSize.width = aDesiredSize.height = aDesiredSize.ascent = aDesiredSize.descent = 0;
if (aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = aDesiredSize.maxElementSize->height = 0;
}
// just in case the hidden input is the target of an incremental reflow
if (eReflowReason_Incremental == aReflowState.reason) {
nsIFrame* targetFrame;
aReflowState.reflowCommand->GetTarget(targetFrame);
if (this == targetFrame) {
nsIFrame* nextFrame;
// Remove the next frame from the reflow path
aReflowState.reflowCommand->GetNext(nextFrame);
}
}
aStatus = NS_FRAME_COMPLETE;
return rv;
}
if ((kSuggestedNotSet != mSuggestedWidth) ||
(kSuggestedNotSet != mSuggestedHeight)) {
nsHTMLReflowState suggestedReflowState(aReflowState);
// Honor the suggested width and/or height.
if (kSuggestedNotSet != mSuggestedWidth) {
suggestedReflowState.mComputedWidth = mSuggestedWidth;
}
if (kSuggestedNotSet != mSuggestedHeight) {
suggestedReflowState.mComputedHeight = mSuggestedHeight;
}
rv = nsHTMLButtonControlFrame::Reflow(aPresContext, aDesiredSize, suggestedReflowState, aStatus);
} else { // Normal reflow.
nsCompatibility mode;
aPresContext->GetCompatibilityMode(&mode);
if (mode == eCompatibility_NavQuirks) {
// nsHTMLButtonControlFrame::Reflow registers it for Standard Mode
// and sets up mPresContext
if (eReflowReason_Initial == aReflowState.reason) {
nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_TRUE);
}
// Do NavQuirks Sizing and layout
rv = DoNavQuirksReflow(aPresContext, aDesiredSize, aReflowState, aStatus);
} else {
// Do Standard mode sizing and layout
rv = nsHTMLButtonControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
}
#ifdef DEBUG_rodsXXXX
COMPARE_QUIRK_SIZE("nsGfxButtonControlFrame", 84, 24) // with the text "Press Me" in it
#endif
aStatus = NS_FRAME_COMPLETE;
nsFormControlFrame::SetupCachedSizes(mCacheSize, mCachedMaxElementSize, aDesiredSize);
if (aDesiredSize.maxElementSize != nsnull) {
aDesiredSize.maxElementSize->width = aDesiredSize.width;
aDesiredSize.maxElementSize->height = aDesiredSize.height;
}
return rv;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::SetSuggestedSize(nscoord aWidth, nscoord aHeight)
{
mSuggestedWidth = aWidth;
mSuggestedHeight = aHeight;
//mState |= NS_FRAME_IS_DIRTY;
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)
// Do nothing here, nsHTMLInputElement::HandleDOMEvent
// takes cares of calling MouseClicked for us.
return NS_OK;
}
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