1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/nsProgressMeterFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,184 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +//
1.10 +// David Hyatt & Eric Vaughan
1.11 +// Netscape Communications
1.12 +//
1.13 +// See documentation in associated header file
1.14 +//
1.15 +
1.16 +#include "nsProgressMeterFrame.h"
1.17 +#include "nsCSSRendering.h"
1.18 +#include "nsIContent.h"
1.19 +#include "nsPresContext.h"
1.20 +#include "nsGkAtoms.h"
1.21 +#include "nsNameSpaceManager.h"
1.22 +#include "nsCOMPtr.h"
1.23 +#include "nsBoxLayoutState.h"
1.24 +#include "nsIReflowCallback.h"
1.25 +#include "nsContentUtils.h"
1.26 +#include "mozilla/Attributes.h"
1.27 +
1.28 +class nsReflowFrameRunnable : public nsRunnable
1.29 +{
1.30 +public:
1.31 + nsReflowFrameRunnable(nsIFrame* aFrame,
1.32 + nsIPresShell::IntrinsicDirty aIntrinsicDirty,
1.33 + nsFrameState aBitToAdd);
1.34 +
1.35 + NS_DECL_NSIRUNNABLE
1.36 +
1.37 + nsWeakFrame mWeakFrame;
1.38 + nsIPresShell::IntrinsicDirty mIntrinsicDirty;
1.39 + nsFrameState mBitToAdd;
1.40 +};
1.41 +
1.42 +nsReflowFrameRunnable::nsReflowFrameRunnable(nsIFrame* aFrame,
1.43 + nsIPresShell::IntrinsicDirty aIntrinsicDirty,
1.44 + nsFrameState aBitToAdd)
1.45 + : mWeakFrame(aFrame),
1.46 + mIntrinsicDirty(aIntrinsicDirty),
1.47 + mBitToAdd(aBitToAdd)
1.48 +{
1.49 +}
1.50 +
1.51 +NS_IMETHODIMP
1.52 +nsReflowFrameRunnable::Run()
1.53 +{
1.54 + if (mWeakFrame.IsAlive()) {
1.55 + mWeakFrame->PresContext()->PresShell()->
1.56 + FrameNeedsReflow(mWeakFrame, mIntrinsicDirty, mBitToAdd);
1.57 + }
1.58 + return NS_OK;
1.59 +}
1.60 +
1.61 +//
1.62 +// NS_NewToolbarFrame
1.63 +//
1.64 +// Creates a new Toolbar frame and returns it
1.65 +//
1.66 +nsIFrame*
1.67 +NS_NewProgressMeterFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
1.68 +{
1.69 + return new (aPresShell) nsProgressMeterFrame(aPresShell, aContext);
1.70 +}
1.71 +
1.72 +NS_IMPL_FRAMEARENA_HELPERS(nsProgressMeterFrame)
1.73 +
1.74 +//
1.75 +// nsProgressMeterFrame dstr
1.76 +//
1.77 +// Cleanup, if necessary
1.78 +//
1.79 +nsProgressMeterFrame :: ~nsProgressMeterFrame ( )
1.80 +{
1.81 +}
1.82 +
1.83 +class nsAsyncProgressMeterInit MOZ_FINAL : public nsIReflowCallback
1.84 +{
1.85 +public:
1.86 + nsAsyncProgressMeterInit(nsIFrame* aFrame) : mWeakFrame(aFrame) {}
1.87 +
1.88 + virtual bool ReflowFinished() MOZ_OVERRIDE
1.89 + {
1.90 + bool shouldFlush = false;
1.91 + nsIFrame* frame = mWeakFrame.GetFrame();
1.92 + if (frame) {
1.93 + nsAutoScriptBlocker scriptBlocker;
1.94 + frame->AttributeChanged(kNameSpaceID_None, nsGkAtoms::mode, 0);
1.95 + shouldFlush = true;
1.96 + }
1.97 + delete this;
1.98 + return shouldFlush;
1.99 + }
1.100 +
1.101 + virtual void ReflowCallbackCanceled() MOZ_OVERRIDE
1.102 + {
1.103 + delete this;
1.104 + }
1.105 +
1.106 + nsWeakFrame mWeakFrame;
1.107 +};
1.108 +
1.109 +NS_IMETHODIMP
1.110 +nsProgressMeterFrame::DoLayout(nsBoxLayoutState& aState)
1.111 +{
1.112 + if (mNeedsReflowCallback) {
1.113 + nsIReflowCallback* cb = new nsAsyncProgressMeterInit(this);
1.114 + if (cb) {
1.115 + PresContext()->PresShell()->PostReflowCallback(cb);
1.116 + }
1.117 + mNeedsReflowCallback = false;
1.118 + }
1.119 + return nsBoxFrame::DoLayout(aState);
1.120 +}
1.121 +
1.122 +nsresult
1.123 +nsProgressMeterFrame::AttributeChanged(int32_t aNameSpaceID,
1.124 + nsIAtom* aAttribute,
1.125 + int32_t aModType)
1.126 +{
1.127 + NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
1.128 + "Scripts not blocked in nsProgressMeterFrame::AttributeChanged!");
1.129 + nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
1.130 + aModType);
1.131 + if (NS_OK != rv) {
1.132 + return rv;
1.133 + }
1.134 +
1.135 + // did the progress change?
1.136 + bool undetermined = mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mode,
1.137 + nsGkAtoms::undetermined, eCaseMatters);
1.138 + if (nsGkAtoms::mode == aAttribute ||
1.139 + (!undetermined &&
1.140 + (nsGkAtoms::value == aAttribute || nsGkAtoms::max == aAttribute))) {
1.141 + nsIFrame* barChild = GetFirstPrincipalChild();
1.142 + if (!barChild) return NS_OK;
1.143 + nsIFrame* remainderChild = barChild->GetNextSibling();
1.144 + if (!remainderChild) return NS_OK;
1.145 + nsCOMPtr<nsIContent> remainderContent = remainderChild->GetContent();
1.146 + if (!remainderContent) return NS_OK;
1.147 +
1.148 + int32_t flex = 1, maxFlex = 1;
1.149 + if (!undetermined) {
1.150 + nsAutoString value, maxValue;
1.151 + mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, value);
1.152 + mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::max, maxValue);
1.153 +
1.154 + nsresult error;
1.155 + flex = value.ToInteger(&error);
1.156 + maxFlex = maxValue.ToInteger(&error);
1.157 + if (NS_FAILED(error) || maxValue.IsEmpty()) {
1.158 + maxFlex = 100;
1.159 + }
1.160 + if (maxFlex < 1) {
1.161 + maxFlex = 1;
1.162 + }
1.163 + if (flex < 0) {
1.164 + flex = 0;
1.165 + }
1.166 + if (flex > maxFlex) {
1.167 + flex = maxFlex;
1.168 + }
1.169 + }
1.170 +
1.171 + nsContentUtils::AddScriptRunner(new nsSetAttrRunnable(
1.172 + barChild->GetContent(), nsGkAtoms::flex, flex));
1.173 + nsContentUtils::AddScriptRunner(new nsSetAttrRunnable(
1.174 + remainderContent, nsGkAtoms::flex, maxFlex - flex));
1.175 + nsContentUtils::AddScriptRunner(new nsReflowFrameRunnable(
1.176 + this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY));
1.177 + }
1.178 + return NS_OK;
1.179 +}
1.180 +
1.181 +#ifdef DEBUG_FRAME_DUMP
1.182 +nsresult
1.183 +nsProgressMeterFrame::GetFrameName(nsAString& aResult) const
1.184 +{
1.185 + return MakeFrameName(NS_LITERAL_STRING("ProgressMeter"), aResult);
1.186 +}
1.187 +#endif
