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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//
// David Hyatt & Eric Vaughan
// Netscape Communications
//
// See documentation in associated header file
//
#include "nsProgressMeterFrame.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "nsPresContext.h"
#include "nsGkAtoms.h"
#include "nsNameSpaceManager.h"
#include "nsCOMPtr.h"
#include "nsBoxLayoutState.h"
#include "nsIReflowCallback.h"
#include "nsContentUtils.h"
#include "mozilla/Attributes.h"
class nsReflowFrameRunnable : public mozilla::Runnable
{
public:
nsReflowFrameRunnable(nsIFrame* aFrame,
nsIPresShell::IntrinsicDirty aIntrinsicDirty,
nsFrameState aBitToAdd);
NS_DECL_NSIRUNNABLE
nsWeakFrame mWeakFrame;
nsIPresShell::IntrinsicDirty mIntrinsicDirty;
nsFrameState mBitToAdd;
};
nsReflowFrameRunnable::nsReflowFrameRunnable(nsIFrame* aFrame,
nsIPresShell::IntrinsicDirty aIntrinsicDirty,
nsFrameState aBitToAdd)
: mWeakFrame(aFrame),
mIntrinsicDirty(aIntrinsicDirty),
mBitToAdd(aBitToAdd)
{
}
NS_IMETHODIMP
nsReflowFrameRunnable::Run()
{
if (mWeakFrame.IsAlive()) {
mWeakFrame->PresContext()->PresShell()->
FrameNeedsReflow(mWeakFrame, mIntrinsicDirty, mBitToAdd);
}
return NS_OK;
}
//
// NS_NewToolbarFrame
//
// Creates a new Toolbar frame and returns it
//
nsIFrame*
NS_NewProgressMeterFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsProgressMeterFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsProgressMeterFrame)
//
// nsProgressMeterFrame dstr
//
// Cleanup, if necessary
//
nsProgressMeterFrame :: ~nsProgressMeterFrame ( )
{
}
class nsAsyncProgressMeterInit final : public nsIReflowCallback
{
public:
explicit nsAsyncProgressMeterInit(nsIFrame* aFrame) : mWeakFrame(aFrame) {}
virtual bool ReflowFinished() override
{
bool shouldFlush = false;
nsIFrame* frame = mWeakFrame.GetFrame();
if (frame) {
nsAutoScriptBlocker scriptBlocker;
frame->AttributeChanged(kNameSpaceID_None, nsGkAtoms::mode, 0);
shouldFlush = true;
}
delete this;
return shouldFlush;
}
virtual void ReflowCallbackCanceled() override
{
delete this;
}
nsWeakFrame mWeakFrame;
};
NS_IMETHODIMP
nsProgressMeterFrame::DoXULLayout(nsBoxLayoutState& aState)
{
if (mNeedsReflowCallback) {
nsIReflowCallback* cb = new nsAsyncProgressMeterInit(this);
if (cb) {
PresContext()->PresShell()->PostReflowCallback(cb);
}
mNeedsReflowCallback = false;
}
return nsBoxFrame::DoXULLayout(aState);
}
nsresult
nsProgressMeterFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
{
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
"Scripts not blocked in nsProgressMeterFrame::AttributeChanged!");
nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
aModType);
if (NS_OK != rv) {
return rv;
}
// did the progress change?
bool undetermined = mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mode,
nsGkAtoms::undetermined, eCaseMatters);
if (nsGkAtoms::mode == aAttribute ||
(!undetermined &&
(nsGkAtoms::value == aAttribute || nsGkAtoms::max == aAttribute))) {
nsIFrame* barChild = PrincipalChildList().FirstChild();
if (!barChild) return NS_OK;
nsIFrame* remainderChild = barChild->GetNextSibling();
if (!remainderChild) return NS_OK;
nsCOMPtr<nsIContent> remainderContent = remainderChild->GetContent();
if (!remainderContent) return NS_OK;
int32_t flex = 1, maxFlex = 1;
if (!undetermined) {
nsAutoString value, maxValue;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, value);
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::max, maxValue);
nsresult error;
flex = value.ToInteger(&error);
maxFlex = maxValue.ToInteger(&error);
if (NS_FAILED(error) || maxValue.IsEmpty()) {
maxFlex = 100;
}
if (maxFlex < 1) {
maxFlex = 1;
}
if (flex < 0) {
flex = 0;
}
if (flex > maxFlex) {
flex = maxFlex;
}
}
nsContentUtils::AddScriptRunner(new nsSetAttrRunnable(
barChild->GetContent(), nsGkAtoms::flex, flex));
nsContentUtils::AddScriptRunner(new nsSetAttrRunnable(
remainderContent, nsGkAtoms::flex, maxFlex - flex));
nsContentUtils::AddScriptRunner(new nsReflowFrameRunnable(
this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY));
}
return NS_OK;
}
#ifdef DEBUG_FRAME_DUMP
nsresult
nsProgressMeterFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("ProgressMeter"), aResult);
}
#endif
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