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f804fbbfd9
This allows nsLayoutPhase to be fwd declared. Differential Revision: https://phabricator.services.mozilla.com/D38840 --HG-- extra : moz-landing-system : lando
90 lines
3.7 KiB
C++
90 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DEBUG
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static_assert(false, "This should not be compiled in !DEBUG");
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#endif // DEBUG
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#include "nsAutoLayoutPhase.h"
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#include "nsPresContext.h"
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#include "nsContentUtils.h"
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nsAutoLayoutPhase::nsAutoLayoutPhase(nsPresContext* aPresContext,
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nsLayoutPhase aPhase)
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: mPresContext(aPresContext), mPhase(aPhase), mCount(0) {
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Enter();
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}
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nsAutoLayoutPhase::~nsAutoLayoutPhase() {
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Exit();
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MOZ_ASSERT(mCount == 0, "imbalanced");
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}
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void nsAutoLayoutPhase::Enter() {
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switch (mPhase) {
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case nsLayoutPhase::Paint:
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::Paint] == 0,
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"recurring into paint");
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MOZ_ASSERT(
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mPresContext->mLayoutPhaseCount[nsLayoutPhase::DisplayListBuilding] ==
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0,
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"recurring into paint from display list building");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::Reflow] == 0,
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"painting in the middle of reflow");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::FrameC] == 0,
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"painting in the middle of frame construction");
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break;
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case nsLayoutPhase::DisplayListBuilding:
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// It's fine and expected to be in a paint here.
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MOZ_ASSERT(
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mPresContext->mLayoutPhaseCount[nsLayoutPhase::DisplayListBuilding] ==
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0,
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"recurring into display list building");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::Reflow] == 0,
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"display list building in the middle of reflow");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::FrameC] == 0,
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"display list building in the middle of frame construction");
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break;
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case nsLayoutPhase::Reflow:
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::Paint] == 0,
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"reflowing in the middle of a paint");
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MOZ_ASSERT(
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mPresContext->mLayoutPhaseCount[nsLayoutPhase::DisplayListBuilding] ==
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0,
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"reflowing in the middle of a display list building");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::Reflow] == 0,
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"recurring into reflow");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::FrameC] == 0,
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"reflowing in the middle of frame construction");
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break;
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case nsLayoutPhase::FrameC:
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::Paint] == 0,
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"constructing frames in the middle of a paint");
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MOZ_ASSERT(
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mPresContext->mLayoutPhaseCount[nsLayoutPhase::DisplayListBuilding] ==
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0,
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"constructing frames in the middle of a display list building");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::Reflow] == 0,
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"constructing frames in the middle of reflow");
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MOZ_ASSERT(mPresContext->mLayoutPhaseCount[nsLayoutPhase::FrameC] == 0,
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"recurring into frame construction");
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MOZ_ASSERT(!nsContentUtils::IsSafeToRunScript(),
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"constructing frames and scripts are not blocked");
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break;
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case nsLayoutPhase::COUNT:
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break;
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}
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++(mPresContext->mLayoutPhaseCount[mPhase]);
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++mCount;
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}
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void nsAutoLayoutPhase::Exit() {
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MOZ_ASSERT(mCount > 0 && mPresContext->mLayoutPhaseCount[mPhase] > 0,
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"imbalanced");
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--(mPresContext->mLayoutPhaseCount[mPhase]);
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--mCount;
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}
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