mirror of
https://github.com/mozilla/gecko-dev.git
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9e530f224a
Move it to the mozilla::widget namespace. Use enum classes for transparency, popup type, popup level, etc. Mostly automated with sed, but there were a few manual changes required as well in windows code because they relied on Atomic<TransparencyMode> working (which now doesn't because TransparencyMode is 1 byte instead of 4 bytes). Differential Revision: https://phabricator.services.mozilla.com/D167537
1184 lines
38 KiB
C++
1184 lines
38 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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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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#include "base/basictypes.h"
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#include "gfxPlatform.h"
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#include "nsRefreshDriver.h"
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#include "mozilla/dom/BrowserChild.h"
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#include "mozilla/gfx/gfxVars.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/layers/APZChild.h"
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#include "mozilla/layers/WebRenderLayerManager.h"
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#include "mozilla/NativeKeyBindingsType.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/SchedulerGroup.h"
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#include "mozilla/StaticPrefs_browser.h"
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#include "mozilla/StaticPrefs_gfx.h"
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#include "mozilla/TextComposition.h"
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#include "mozilla/TextEventDispatcher.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/Unused.h"
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#include "PuppetWidget.h"
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#include "nsContentUtils.h"
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#include "nsIWidgetListener.h"
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#include "imgIContainer.h"
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#include "nsView.h"
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#include "nsXPLookAndFeel.h"
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#include "nsPrintfCString.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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using namespace mozilla::layers;
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using namespace mozilla::widget;
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static void InvalidateRegion(nsIWidget* aWidget,
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const LayoutDeviceIntRegion& aRegion) {
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for (auto iter = aRegion.RectIter(); !iter.Done(); iter.Next()) {
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aWidget->Invalidate(iter.Get());
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}
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}
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/*static*/
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already_AddRefed<nsIWidget> nsIWidget::CreatePuppetWidget(
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BrowserChild* aBrowserChild) {
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MOZ_ASSERT(!aBrowserChild || nsIWidget::UsePuppetWidgets(),
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"PuppetWidgets not allowed in this configuration");
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nsCOMPtr<nsIWidget> widget = new PuppetWidget(aBrowserChild);
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return widget.forget();
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}
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namespace mozilla {
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namespace widget {
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static bool IsPopup(const widget::InitData* aInitData) {
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return aInitData && aInitData->mWindowType == WindowType::Popup;
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}
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static bool MightNeedIMEFocus(const widget::InitData* aInitData) {
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// In the puppet-widget world, popup widgets are just dummies and
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// shouldn't try to mess with IME state.
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#ifdef MOZ_CROSS_PROCESS_IME
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return !IsPopup(aInitData);
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#else
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return false;
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#endif
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}
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// Arbitrary, fungible.
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const size_t PuppetWidget::kMaxDimension = 4000;
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NS_IMPL_ISUPPORTS_INHERITED(PuppetWidget, nsBaseWidget,
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TextEventDispatcherListener)
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PuppetWidget::PuppetWidget(BrowserChild* aBrowserChild)
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: mBrowserChild(aBrowserChild),
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mMemoryPressureObserver(nullptr),
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mEnabled(false),
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mVisible(false),
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mSizeMode(nsSizeMode_Normal),
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mNeedIMEStateInit(false),
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mIgnoreCompositionEvents(false) {
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// Setting 'Unknown' means "not yet cached".
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mInputContext.mIMEState.mEnabled = IMEEnabled::Unknown;
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}
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PuppetWidget::~PuppetWidget() { Destroy(); }
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void PuppetWidget::InfallibleCreate(nsIWidget* aParent,
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nsNativeWidget aNativeParent,
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const LayoutDeviceIntRect& aRect,
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widget::InitData* aInitData) {
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MOZ_ASSERT(!aNativeParent, "got a non-Puppet native parent");
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BaseCreate(nullptr, aInitData);
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mBounds = aRect;
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mEnabled = true;
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mVisible = true;
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mDrawTarget = gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(
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IntSize(1, 1), SurfaceFormat::B8G8R8A8);
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mNeedIMEStateInit = MightNeedIMEFocus(aInitData);
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PuppetWidget* parent = static_cast<PuppetWidget*>(aParent);
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if (parent) {
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parent->SetChild(this);
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mWindowRenderer = parent->GetWindowRenderer();
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} else {
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Resize(mBounds.X(), mBounds.Y(), mBounds.Width(), mBounds.Height(), false);
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}
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mMemoryPressureObserver = MemoryPressureObserver::Create(this);
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}
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nsresult PuppetWidget::Create(nsIWidget* aParent, nsNativeWidget aNativeParent,
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const LayoutDeviceIntRect& aRect,
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widget::InitData* aInitData) {
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InfallibleCreate(aParent, aNativeParent, aRect, aInitData);
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return NS_OK;
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}
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void PuppetWidget::InitIMEState() {
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MOZ_ASSERT(mBrowserChild);
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if (mNeedIMEStateInit) {
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mContentCache.Clear();
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mBrowserChild->SendUpdateContentCache(mContentCache);
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mIMENotificationRequestsOfParent = IMENotificationRequests();
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mNeedIMEStateInit = false;
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}
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}
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already_AddRefed<nsIWidget> PuppetWidget::CreateChild(
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const LayoutDeviceIntRect& aRect, widget::InitData* aInitData,
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bool aForceUseIWidgetParent) {
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bool isPopup = IsPopup(aInitData);
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nsCOMPtr<nsIWidget> widget = nsIWidget::CreatePuppetWidget(mBrowserChild);
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return ((widget && NS_SUCCEEDED(widget->Create(isPopup ? nullptr : this,
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nullptr, aRect, aInitData)))
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? widget.forget()
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: nullptr);
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}
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void PuppetWidget::Destroy() {
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if (mOnDestroyCalled) {
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return;
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}
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mOnDestroyCalled = true;
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Base::OnDestroy();
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Base::Destroy();
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if (mMemoryPressureObserver) {
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mMemoryPressureObserver->Unregister();
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mMemoryPressureObserver = nullptr;
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}
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mChild = nullptr;
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if (mWindowRenderer) {
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mWindowRenderer->Destroy();
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}
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mWindowRenderer = nullptr;
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mBrowserChild = nullptr;
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}
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void PuppetWidget::Show(bool aState) {
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NS_ASSERTION(mEnabled,
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"does it make sense to Show()/Hide() a disabled widget?");
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bool wasVisible = mVisible;
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mVisible = aState;
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if (mChild) {
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mChild->mVisible = aState;
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}
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if (!wasVisible && mVisible) {
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// The previously attached widget listener is handy if
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// we're transitioning from page to page without dropping
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// layers (since we'll continue to show the old layers
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// associated with that old widget listener). If the
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// PuppetWidget was hidden, those layers are dropped,
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// so the previously attached widget listener is really
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// of no use anymore (and is actually actively harmful - see
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// bug 1323586).
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mPreviouslyAttachedWidgetListener = nullptr;
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Resize(mBounds.Width(), mBounds.Height(), false);
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Invalidate(mBounds);
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}
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}
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void PuppetWidget::Resize(double aWidth, double aHeight, bool aRepaint) {
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LayoutDeviceIntRect oldBounds = mBounds;
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mBounds.SizeTo(
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LayoutDeviceIntSize(NSToIntRound(aWidth), NSToIntRound(aHeight)));
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if (mChild) {
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mChild->Resize(aWidth, aHeight, aRepaint);
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return;
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}
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// XXX: roc says that |aRepaint| dictates whether or not to
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// invalidate the expanded area
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if (oldBounds.Size() < mBounds.Size() && aRepaint) {
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LayoutDeviceIntRegion dirty(mBounds);
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dirty.Sub(dirty, oldBounds);
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InvalidateRegion(this, dirty);
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}
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// call WindowResized() on both the current listener, and possibly
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// also the previous one if we're in a state where we're drawing that one
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// because the current one is paint suppressed
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if (!oldBounds.IsEqualEdges(mBounds) && mAttachedWidgetListener) {
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if (GetCurrentWidgetListener() &&
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GetCurrentWidgetListener() != mAttachedWidgetListener) {
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GetCurrentWidgetListener()->WindowResized(this, mBounds.Width(),
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mBounds.Height());
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}
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mAttachedWidgetListener->WindowResized(this, mBounds.Width(),
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mBounds.Height());
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}
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}
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void PuppetWidget::SetFocus(Raise aRaise, CallerType aCallerType) {
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if (aRaise == Raise::Yes && mBrowserChild) {
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mBrowserChild->SendRequestFocus(true, aCallerType);
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}
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}
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void PuppetWidget::Invalidate(const LayoutDeviceIntRect& aRect) {
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#ifdef DEBUG
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debug_DumpInvalidate(stderr, this, &aRect, "PuppetWidget", 0);
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#endif
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if (mChild) {
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mChild->Invalidate(aRect);
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return;
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}
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if (mBrowserChild && !aRect.IsEmpty() && !mWidgetPaintTask.IsPending()) {
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mWidgetPaintTask = new WidgetPaintTask(this);
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nsCOMPtr<nsIRunnable> event(mWidgetPaintTask.get());
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SchedulerGroup::Dispatch(TaskCategory::Other, event.forget());
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}
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}
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mozilla::LayoutDeviceToLayoutDeviceMatrix4x4
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PuppetWidget::WidgetToTopLevelWidgetTransform() {
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if (!GetOwningBrowserChild()) {
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NS_WARNING("PuppetWidget without Tab does not have transform information.");
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return mozilla::LayoutDeviceToLayoutDeviceMatrix4x4();
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}
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return GetOwningBrowserChild()->GetChildToParentConversionMatrix();
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}
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void PuppetWidget::InitEvent(WidgetGUIEvent& aEvent,
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LayoutDeviceIntPoint* aPoint) {
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if (nullptr == aPoint) {
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aEvent.mRefPoint = LayoutDeviceIntPoint(0, 0);
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} else {
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// use the point override if provided
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aEvent.mRefPoint = *aPoint;
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}
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}
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nsresult PuppetWidget::DispatchEvent(WidgetGUIEvent* aEvent,
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nsEventStatus& aStatus) {
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#ifdef DEBUG
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debug_DumpEvent(stdout, aEvent->mWidget, aEvent, "PuppetWidget", 0);
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#endif
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MOZ_ASSERT(!mChild || mChild->mWindowType == WindowType::Popup,
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"Unexpected event dispatch!");
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MOZ_ASSERT(!aEvent->AsKeyboardEvent() ||
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aEvent->mFlags.mIsSynthesizedForTests ||
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aEvent->AsKeyboardEvent()->AreAllEditCommandsInitialized(),
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"Non-sysnthesized keyboard events should have edit commands for "
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"all types "
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"before dispatched");
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if (aEvent->mClass == eCompositionEventClass) {
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// If we've already requested to commit/cancel the latest composition,
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// TextComposition for the old composition has been destroyed. Then,
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// the DOM tree needs to listen to next eCompositionStart and its
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// following events. So, until we meet new eCompositionStart, let's
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// discard all unnecessary composition events here.
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if (mIgnoreCompositionEvents) {
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if (aEvent->mMessage != eCompositionStart) {
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aStatus = nsEventStatus_eIgnore;
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return NS_OK;
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}
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// Now, we receive new eCompositionStart. Let's restart to handle
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// composition in this process.
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mIgnoreCompositionEvents = false;
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}
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// Store the latest native IME context of parent process's widget or
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// TextEventDispatcher if it's in this process.
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WidgetCompositionEvent* compositionEvent = aEvent->AsCompositionEvent();
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#ifdef DEBUG
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if (mNativeIMEContext.IsValid() &&
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mNativeIMEContext != compositionEvent->mNativeIMEContext) {
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RefPtr<TextComposition> composition =
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IMEStateManager::GetTextCompositionFor(this);
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MOZ_ASSERT(
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!composition,
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"When there is composition caused by old native IME context, "
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"composition events caused by different native IME context are not "
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"allowed");
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}
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#endif // #ifdef DEBUG
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mNativeIMEContext = compositionEvent->mNativeIMEContext;
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mContentCache.OnCompositionEvent(*compositionEvent);
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}
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// If the event is a composition event or a keyboard event, it should be
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// dispatched with TextEventDispatcher if we could do that with current
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// design. However, we cannot do that without big changes and the behavior
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// is not so complicated for now. Therefore, we should just notify it
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// of dispatching events and TextEventDispatcher should emulate the state
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// with events here.
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if (aEvent->mClass == eCompositionEventClass ||
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aEvent->mClass == eKeyboardEventClass) {
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TextEventDispatcher* dispatcher = GetTextEventDispatcher();
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// However, if the event is being dispatched by the text event dispatcher
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// or, there is native text event dispatcher listener, that means that
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// native text input event handler is in this process like on Android,
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// and the event is not synthesized for tests, the event is coming from
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// the TextEventDispatcher. In these cases, we shouldn't notify
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// TextEventDispatcher of dispatching the event.
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if (!dispatcher->IsDispatchingEvent() &&
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!(mNativeTextEventDispatcherListener &&
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!aEvent->mFlags.mIsSynthesizedForTests)) {
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DebugOnly<nsresult> rv =
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dispatcher->BeginInputTransactionFor(aEvent, this);
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NS_WARNING_ASSERTION(
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NS_SUCCEEDED(rv),
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"The text event dispatcher should always succeed to start input "
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"transaction for the event");
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}
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}
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aStatus = nsEventStatus_eIgnore;
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if (GetCurrentWidgetListener()) {
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aStatus =
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GetCurrentWidgetListener()->HandleEvent(aEvent, mUseAttachedEvents);
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}
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return NS_OK;
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}
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nsIWidget::ContentAndAPZEventStatus PuppetWidget::DispatchInputEvent(
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WidgetInputEvent* aEvent) {
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ContentAndAPZEventStatus status;
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if (!AsyncPanZoomEnabled()) {
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DispatchEvent(aEvent, status.mContentStatus);
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return status;
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}
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if (!mBrowserChild) {
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return status;
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}
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switch (aEvent->mClass) {
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case eWheelEventClass:
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Unused << mBrowserChild->SendDispatchWheelEvent(*aEvent->AsWheelEvent());
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break;
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case eMouseEventClass:
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Unused << mBrowserChild->SendDispatchMouseEvent(*aEvent->AsMouseEvent());
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break;
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case eKeyboardEventClass:
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Unused << mBrowserChild->SendDispatchKeyboardEvent(
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*aEvent->AsKeyboardEvent());
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break;
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case eTouchEventClass:
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Unused << mBrowserChild->SendDispatchTouchEvent(*aEvent->AsTouchEvent());
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("unsupported event type");
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}
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return status;
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}
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nsresult PuppetWidget::SynthesizeNativeKeyEvent(
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int32_t aNativeKeyboardLayout, int32_t aNativeKeyCode,
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uint32_t aModifierFlags, const nsAString& aCharacters,
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const nsAString& aUnmodifiedCharacters, nsIObserver* aObserver) {
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AutoObserverNotifier notifier(aObserver, "keyevent");
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendSynthesizeNativeKeyEvent(
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aNativeKeyboardLayout, aNativeKeyCode, aModifierFlags, aCharacters,
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aUnmodifiedCharacters, notifier.SaveObserver());
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return NS_OK;
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}
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nsresult PuppetWidget::SynthesizeNativeMouseEvent(
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mozilla::LayoutDeviceIntPoint aPoint, NativeMouseMessage aNativeMessage,
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MouseButton aButton, nsIWidget::Modifiers aModifierFlags,
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nsIObserver* aObserver) {
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AutoObserverNotifier notifier(aObserver, "mouseevent");
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendSynthesizeNativeMouseEvent(
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aPoint, static_cast<uint32_t>(aNativeMessage),
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static_cast<int16_t>(aButton), static_cast<uint32_t>(aModifierFlags),
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notifier.SaveObserver());
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return NS_OK;
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}
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nsresult PuppetWidget::SynthesizeNativeMouseMove(
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mozilla::LayoutDeviceIntPoint aPoint, nsIObserver* aObserver) {
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AutoObserverNotifier notifier(aObserver, "mousemove");
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendSynthesizeNativeMouseMove(aPoint, notifier.SaveObserver());
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return NS_OK;
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}
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nsresult PuppetWidget::SynthesizeNativeMouseScrollEvent(
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mozilla::LayoutDeviceIntPoint aPoint, uint32_t aNativeMessage,
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double aDeltaX, double aDeltaY, double aDeltaZ, uint32_t aModifierFlags,
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uint32_t aAdditionalFlags, nsIObserver* aObserver) {
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AutoObserverNotifier notifier(aObserver, "mousescrollevent");
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendSynthesizeNativeMouseScrollEvent(
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aPoint, aNativeMessage, aDeltaX, aDeltaY, aDeltaZ, aModifierFlags,
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aAdditionalFlags, notifier.SaveObserver());
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return NS_OK;
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}
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nsresult PuppetWidget::SynthesizeNativeTouchPoint(
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uint32_t aPointerId, TouchPointerState aPointerState,
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LayoutDeviceIntPoint aPoint, double aPointerPressure,
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uint32_t aPointerOrientation, nsIObserver* aObserver) {
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AutoObserverNotifier notifier(aObserver, "touchpoint");
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendSynthesizeNativeTouchPoint(
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aPointerId, aPointerState, aPoint, aPointerPressure, aPointerOrientation,
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notifier.SaveObserver());
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return NS_OK;
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}
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nsresult PuppetWidget::SynthesizeNativeTouchPadPinch(
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TouchpadGesturePhase aEventPhase, float aScale, LayoutDeviceIntPoint aPoint,
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int32_t aModifierFlags) {
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendSynthesizeNativeTouchPadPinch(aEventPhase, aScale, aPoint,
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aModifierFlags);
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return NS_OK;
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}
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nsresult PuppetWidget::SynthesizeNativeTouchTap(LayoutDeviceIntPoint aPoint,
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bool aLongTap,
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nsIObserver* aObserver) {
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AutoObserverNotifier notifier(aObserver, "touchtap");
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendSynthesizeNativeTouchTap(aPoint, aLongTap,
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notifier.SaveObserver());
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return NS_OK;
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}
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nsresult PuppetWidget::ClearNativeTouchSequence(nsIObserver* aObserver) {
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AutoObserverNotifier notifier(aObserver, "cleartouch");
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if (!mBrowserChild) {
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return NS_ERROR_FAILURE;
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}
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mBrowserChild->SendClearNativeTouchSequence(notifier.SaveObserver());
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return NS_OK;
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}
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|
|
nsresult PuppetWidget::SynthesizeNativePenInput(
|
|
uint32_t aPointerId, TouchPointerState aPointerState,
|
|
LayoutDeviceIntPoint aPoint, double aPressure, uint32_t aRotation,
|
|
int32_t aTiltX, int32_t aTiltY, int32_t aButton, nsIObserver* aObserver) {
|
|
AutoObserverNotifier notifier(aObserver, "peninput");
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
mBrowserChild->SendSynthesizeNativePenInput(
|
|
aPointerId, aPointerState, aPoint, aPressure, aRotation, aTiltX, aTiltY,
|
|
aButton, notifier.SaveObserver());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::SynthesizeNativeTouchpadDoubleTap(
|
|
LayoutDeviceIntPoint aPoint, uint32_t aModifierFlags) {
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
mBrowserChild->SendSynthesizeNativeTouchpadDoubleTap(aPoint, aModifierFlags);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::SynthesizeNativeTouchpadPan(
|
|
TouchpadGesturePhase aEventPhase, LayoutDeviceIntPoint aPoint,
|
|
double aDeltaX, double aDeltaY, int32_t aModifierFlags,
|
|
nsIObserver* aObserver) {
|
|
AutoObserverNotifier notifier(aObserver, "touchpadpanevent");
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
mBrowserChild->SendSynthesizeNativeTouchpadPan(aEventPhase, aPoint, aDeltaX,
|
|
aDeltaY, aModifierFlags,
|
|
notifier.SaveObserver());
|
|
return NS_OK;
|
|
}
|
|
|
|
void PuppetWidget::LockNativePointer() {
|
|
if (!mBrowserChild) {
|
|
return;
|
|
}
|
|
mBrowserChild->SendLockNativePointer();
|
|
}
|
|
|
|
void PuppetWidget::UnlockNativePointer() {
|
|
if (!mBrowserChild) {
|
|
return;
|
|
}
|
|
mBrowserChild->SendUnlockNativePointer();
|
|
}
|
|
|
|
void PuppetWidget::SetConfirmedTargetAPZC(
|
|
uint64_t aInputBlockId,
|
|
const nsTArray<ScrollableLayerGuid>& aTargets) const {
|
|
if (mBrowserChild) {
|
|
mBrowserChild->SetTargetAPZC(aInputBlockId, aTargets);
|
|
}
|
|
}
|
|
|
|
void PuppetWidget::UpdateZoomConstraints(
|
|
const uint32_t& aPresShellId, const ScrollableLayerGuid::ViewID& aViewId,
|
|
const Maybe<ZoomConstraints>& aConstraints) {
|
|
if (mBrowserChild) {
|
|
mBrowserChild->DoUpdateZoomConstraints(aPresShellId, aViewId, aConstraints);
|
|
}
|
|
}
|
|
|
|
bool PuppetWidget::AsyncPanZoomEnabled() const {
|
|
return mBrowserChild && mBrowserChild->AsyncPanZoomEnabled();
|
|
}
|
|
|
|
bool PuppetWidget::GetEditCommands(NativeKeyBindingsType aType,
|
|
const WidgetKeyboardEvent& aEvent,
|
|
nsTArray<CommandInt>& aCommands) {
|
|
MOZ_ASSERT(!aEvent.mFlags.mIsSynthesizedForTests);
|
|
// Validate the arguments.
|
|
if (NS_WARN_IF(!nsIWidget::GetEditCommands(aType, aEvent, aCommands))) {
|
|
return false;
|
|
}
|
|
if (NS_WARN_IF(!mBrowserChild)) {
|
|
return false;
|
|
}
|
|
mBrowserChild->RequestEditCommands(aType, aEvent, aCommands);
|
|
return true;
|
|
}
|
|
|
|
WindowRenderer* PuppetWidget::GetWindowRenderer() {
|
|
if (!mWindowRenderer) {
|
|
if (XRE_IsParentProcess()) {
|
|
// On the parent process there is no CompositorBridgeChild which confuses
|
|
// some layers code, so we use basic layers instead. Note that we create
|
|
mWindowRenderer = new FallbackRenderer;
|
|
return mWindowRenderer;
|
|
}
|
|
|
|
// If we know for sure that the parent side of this BrowserChild is not
|
|
// connected to the compositor, we don't want to use a "remote" layer
|
|
// manager like WebRender or Client. Instead we use a Basic one which
|
|
// can do drawing in this process.
|
|
MOZ_ASSERT(!mBrowserChild ||
|
|
mBrowserChild->IsLayersConnected() != Some(true));
|
|
mWindowRenderer = CreateFallbackRenderer();
|
|
}
|
|
|
|
return mWindowRenderer;
|
|
}
|
|
|
|
bool PuppetWidget::CreateRemoteLayerManager(
|
|
const std::function<bool(WebRenderLayerManager*)>& aInitializeFunc) {
|
|
RefPtr<WebRenderLayerManager> lm = new WebRenderLayerManager(this);
|
|
MOZ_ASSERT(mBrowserChild);
|
|
|
|
if (!aInitializeFunc(lm)) {
|
|
return false;
|
|
}
|
|
|
|
// Force the old LM to self destruct, otherwise if the reference dangles we
|
|
// could fail to revoke the most recent transaction. We only want to replace
|
|
// it if we successfully create its successor because a partially initialized
|
|
// layer manager is worse than a fully initialized but shutdown layer manager.
|
|
DestroyLayerManager();
|
|
mWindowRenderer = std::move(lm);
|
|
return true;
|
|
}
|
|
|
|
nsresult PuppetWidget::RequestIMEToCommitComposition(bool aCancel) {
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
MOZ_ASSERT(!Destroyed());
|
|
|
|
// There must not be composition which is caused by the PuppetWidget instance.
|
|
if (NS_WARN_IF(!mNativeIMEContext.IsValid())) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// We've already requested to commit/cancel composition.
|
|
if (NS_WARN_IF(mIgnoreCompositionEvents)) {
|
|
#ifdef DEBUG
|
|
RefPtr<TextComposition> composition =
|
|
IMEStateManager::GetTextCompositionFor(this);
|
|
MOZ_ASSERT(!composition);
|
|
#endif // #ifdef DEBUG
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<TextComposition> composition =
|
|
IMEStateManager::GetTextCompositionFor(this);
|
|
// This method shouldn't be called when there is no text composition instance.
|
|
if (NS_WARN_IF(!composition)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(
|
|
composition->IsRequestingCommitOrCancelComposition(),
|
|
"Requesting commit or cancel composition should be requested via "
|
|
"TextComposition instance");
|
|
|
|
bool isCommitted = false;
|
|
nsAutoString committedString;
|
|
if (NS_WARN_IF(!mBrowserChild->SendRequestIMEToCommitComposition(
|
|
aCancel, &isCommitted, &committedString))) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If the composition wasn't committed synchronously, we need to wait async
|
|
// composition events for destroying the TextComposition instance.
|
|
if (!isCommitted) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Dispatch eCompositionCommit event.
|
|
WidgetCompositionEvent compositionCommitEvent(true, eCompositionCommit, this);
|
|
InitEvent(compositionCommitEvent, nullptr);
|
|
compositionCommitEvent.mData = committedString;
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
DispatchEvent(&compositionCommitEvent, status);
|
|
|
|
#ifdef DEBUG
|
|
RefPtr<TextComposition> currentComposition =
|
|
IMEStateManager::GetTextCompositionFor(this);
|
|
MOZ_ASSERT(!currentComposition);
|
|
#endif // #ifdef DEBUG
|
|
|
|
// Ignore the following composition events until we receive new
|
|
// eCompositionStart event.
|
|
mIgnoreCompositionEvents = true;
|
|
|
|
Unused << mBrowserChild->SendOnEventNeedingAckHandled(
|
|
eCompositionCommitRequestHandled);
|
|
|
|
// NOTE: PuppetWidget might be destroyed already.
|
|
return NS_OK;
|
|
}
|
|
|
|
// When this widget caches input context and currently managed by
|
|
// IMEStateManager, the cache is valid.
|
|
bool PuppetWidget::HaveValidInputContextCache() const {
|
|
return (mInputContext.mIMEState.mEnabled != IMEEnabled::Unknown &&
|
|
IMEStateManager::GetWidgetForActiveInputContext() == this);
|
|
}
|
|
|
|
nsRefreshDriver* PuppetWidget::GetTopLevelRefreshDriver() const {
|
|
if (!mBrowserChild) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (PresShell* presShell = mBrowserChild->GetTopLevelPresShell()) {
|
|
return presShell->GetRefreshDriver();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void PuppetWidget::SetInputContext(const InputContext& aContext,
|
|
const InputContextAction& aAction) {
|
|
mInputContext = aContext;
|
|
// Any widget instances cannot cache IME open state because IME open state
|
|
// can be changed by user but native IME may not notify us of changing the
|
|
// open state on some platforms.
|
|
mInputContext.mIMEState.mOpen = IMEState::OPEN_STATE_NOT_SUPPORTED;
|
|
if (!mBrowserChild) {
|
|
return;
|
|
}
|
|
mBrowserChild->SendSetInputContext(aContext, aAction);
|
|
}
|
|
|
|
InputContext PuppetWidget::GetInputContext() {
|
|
// XXX Currently, we don't support retrieving IME open state from child
|
|
// process.
|
|
|
|
// If the cache of input context is valid, we can avoid to use synchronous
|
|
// IPC.
|
|
if (HaveValidInputContextCache()) {
|
|
return mInputContext;
|
|
}
|
|
|
|
NS_WARNING("PuppetWidget::GetInputContext() needs to retrieve it with IPC");
|
|
|
|
// Don't cache InputContext here because this process isn't managing IME
|
|
// state of the chrome widget. So, we cannot modify mInputContext when
|
|
// chrome widget is set to new context.
|
|
InputContext context;
|
|
if (mBrowserChild) {
|
|
mBrowserChild->SendGetInputContext(&context.mIMEState);
|
|
}
|
|
return context;
|
|
}
|
|
|
|
NativeIMEContext PuppetWidget::GetNativeIMEContext() {
|
|
return mNativeIMEContext;
|
|
}
|
|
|
|
nsresult PuppetWidget::NotifyIMEOfFocusChange(
|
|
const IMENotification& aIMENotification) {
|
|
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
|
|
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
bool gotFocus = aIMENotification.mMessage == NOTIFY_IME_OF_FOCUS;
|
|
if (gotFocus) {
|
|
// When IME gets focus, we should initialize all information of the
|
|
// content, however, it may fail to get it because the editor may have
|
|
// already been blurred.
|
|
if (NS_WARN_IF(!mContentCache.CacheAll(this, &aIMENotification))) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
} else {
|
|
// When IME loses focus, we don't need to store anything.
|
|
mContentCache.Clear();
|
|
}
|
|
|
|
mIMENotificationRequestsOfParent =
|
|
IMENotificationRequests(IMENotificationRequests::NOTIFY_ALL);
|
|
RefPtr<PuppetWidget> self = this;
|
|
mBrowserChild->SendNotifyIMEFocus(mContentCache, aIMENotification)
|
|
->Then(
|
|
GetMainThreadSerialEventTarget(), __func__,
|
|
[self](IMENotificationRequests&& aRequests) {
|
|
self->mIMENotificationRequestsOfParent = aRequests;
|
|
if (TextEventDispatcher* dispatcher =
|
|
self->GetTextEventDispatcher()) {
|
|
dispatcher->OnWidgetChangeIMENotificationRequests(self);
|
|
}
|
|
},
|
|
[self](mozilla::ipc::ResponseRejectReason&& aReason) {
|
|
NS_WARNING("SendNotifyIMEFocus got rejected.");
|
|
});
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::NotifyIMEOfCompositionUpdate(
|
|
const IMENotification& aIMENotification) {
|
|
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
|
|
|
|
if (NS_WARN_IF(!mBrowserChild)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (NS_WARN_IF(!mContentCache.CacheSelection(this, &aIMENotification))) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
mBrowserChild->SendNotifyIMECompositionUpdate(mContentCache,
|
|
aIMENotification);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::NotifyIMEOfTextChange(
|
|
const IMENotification& aIMENotification) {
|
|
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
|
|
MOZ_ASSERT(aIMENotification.mMessage == NOTIFY_IME_OF_TEXT_CHANGE,
|
|
"Passed wrong notification");
|
|
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// FYI: text change notification is the first notification after
|
|
// a user operation changes the content. So, we need to modify
|
|
// the cache as far as possible here.
|
|
|
|
if (NS_WARN_IF(!mContentCache.CacheText(this, &aIMENotification))) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// BrowserParent doesn't this this to cache. we don't send the notification
|
|
// if parent process doesn't request NOTIFY_TEXT_CHANGE.
|
|
if (mIMENotificationRequestsOfParent.WantTextChange()) {
|
|
mBrowserChild->SendNotifyIMETextChange(mContentCache, aIMENotification);
|
|
} else {
|
|
mBrowserChild->SendUpdateContentCache(mContentCache);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::NotifyIMEOfSelectionChange(
|
|
const IMENotification& aIMENotification) {
|
|
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
|
|
MOZ_ASSERT(aIMENotification.mMessage == NOTIFY_IME_OF_SELECTION_CHANGE,
|
|
"Passed wrong notification");
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Note that selection change must be notified after text change if it occurs.
|
|
// Therefore, we don't need to query text content again here.
|
|
mContentCache.SetSelection(this, aIMENotification.mSelectionChangeData);
|
|
|
|
mBrowserChild->SendNotifyIMESelection(mContentCache, aIMENotification);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::NotifyIMEOfMouseButtonEvent(
|
|
const IMENotification& aIMENotification) {
|
|
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
bool consumedByIME = false;
|
|
if (!mBrowserChild->SendNotifyIMEMouseButtonEvent(aIMENotification,
|
|
&consumedByIME)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return consumedByIME ? NS_SUCCESS_EVENT_CONSUMED : NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::NotifyIMEOfPositionChange(
|
|
const IMENotification& aIMENotification) {
|
|
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
|
|
if (NS_WARN_IF(!mBrowserChild)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (NS_WARN_IF(!mContentCache.CacheEditorRect(this, &aIMENotification))) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (NS_WARN_IF(!mContentCache.CacheSelection(this, &aIMENotification))) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (mIMENotificationRequestsOfParent.WantPositionChanged()) {
|
|
mBrowserChild->SendNotifyIMEPositionChange(mContentCache, aIMENotification);
|
|
} else {
|
|
mBrowserChild->SendUpdateContentCache(mContentCache);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
struct CursorSurface {
|
|
UniquePtr<char[]> mData;
|
|
IntSize mSize;
|
|
};
|
|
|
|
void PuppetWidget::SetCursor(const Cursor& aCursor) {
|
|
if (!mBrowserChild) {
|
|
return;
|
|
}
|
|
|
|
const bool force = mUpdateCursor;
|
|
if (!force && mCursor == aCursor) {
|
|
return;
|
|
}
|
|
|
|
bool hasCustomCursor = false;
|
|
Maybe<mozilla::ipc::BigBuffer> customCursorData;
|
|
size_t length = 0;
|
|
IntSize customCursorSize;
|
|
int32_t stride = 0;
|
|
auto format = SurfaceFormat::B8G8R8A8;
|
|
ImageResolution resolution = aCursor.mResolution;
|
|
if (aCursor.IsCustom()) {
|
|
int32_t width = 0, height = 0;
|
|
aCursor.mContainer->GetWidth(&width);
|
|
aCursor.mContainer->GetHeight(&height);
|
|
const int32_t flags =
|
|
imgIContainer::FLAG_SYNC_DECODE | imgIContainer::FLAG_ASYNC_NOTIFY;
|
|
RefPtr<SourceSurface> surface;
|
|
if (width && height &&
|
|
aCursor.mContainer->GetType() == imgIContainer::TYPE_VECTOR) {
|
|
// For vector images, scale to device pixels.
|
|
resolution.ScaleBy(GetDefaultScale().scale);
|
|
resolution.ApplyInverseTo(width, height);
|
|
surface = aCursor.mContainer->GetFrameAtSize(
|
|
{width, height}, imgIContainer::FRAME_CURRENT, flags);
|
|
} else {
|
|
// NOTE(emilio): We get the frame at the full size, ignoring resolution,
|
|
// because we're going to rasterize it, and we'd effectively lose the
|
|
// extra pixels if we rasterized to CustomCursorSize.
|
|
surface =
|
|
aCursor.mContainer->GetFrame(imgIContainer::FRAME_CURRENT, flags);
|
|
}
|
|
if (surface) {
|
|
if (RefPtr<DataSourceSurface> dataSurface = surface->GetDataSurface()) {
|
|
hasCustomCursor = true;
|
|
customCursorData =
|
|
nsContentUtils::GetSurfaceData(*dataSurface, &length, &stride);
|
|
customCursorSize = dataSurface->GetSize();
|
|
format = dataSurface->GetFormat();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mBrowserChild->SendSetCursor(
|
|
aCursor.mDefaultCursor, hasCustomCursor, std::move(customCursorData),
|
|
customCursorSize.width, customCursorSize.height, resolution.mX,
|
|
resolution.mY, stride, format, aCursor.mHotspotX, aCursor.mHotspotY,
|
|
force)) {
|
|
return;
|
|
}
|
|
mCursor = aCursor;
|
|
mUpdateCursor = false;
|
|
}
|
|
|
|
void PuppetWidget::SetChild(PuppetWidget* aChild) {
|
|
MOZ_ASSERT(this != aChild, "can't parent a widget to itself");
|
|
MOZ_ASSERT(!aChild->mChild,
|
|
"fake widget 'hierarchy' only expected to have one level");
|
|
|
|
mChild = aChild;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PuppetWidget::WidgetPaintTask::Run() {
|
|
if (mWidget) {
|
|
mWidget->Paint();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void PuppetWidget::Paint() {
|
|
if (!GetCurrentWidgetListener()) return;
|
|
|
|
mWidgetPaintTask.Revoke();
|
|
|
|
RefPtr<PuppetWidget> strongThis(this);
|
|
|
|
GetCurrentWidgetListener()->WillPaintWindow(this);
|
|
|
|
if (GetCurrentWidgetListener()) {
|
|
GetCurrentWidgetListener()->DidPaintWindow();
|
|
}
|
|
}
|
|
|
|
void PuppetWidget::PaintNowIfNeeded() {
|
|
if (IsVisible() && mWidgetPaintTask.IsPending()) {
|
|
Paint();
|
|
}
|
|
}
|
|
|
|
void PuppetWidget::OnMemoryPressure(layers::MemoryPressureReason aWhy) {
|
|
if (aWhy != MemoryPressureReason::LOW_MEMORY_ONGOING && !mVisible &&
|
|
mWindowRenderer && mWindowRenderer->AsWebRender() &&
|
|
XRE_IsContentProcess()) {
|
|
mWindowRenderer->AsWebRender()->ClearCachedResources();
|
|
}
|
|
}
|
|
|
|
bool PuppetWidget::NeedsPaint() {
|
|
// e10s popups are handled by the parent process, so never should be painted
|
|
// here
|
|
if (XRE_IsContentProcess() &&
|
|
StaticPrefs::browser_tabs_remote_desktopbehavior() &&
|
|
mWindowType == WindowType::Popup) {
|
|
NS_WARNING("Trying to paint an e10s popup in the child process!");
|
|
return false;
|
|
}
|
|
|
|
return mVisible;
|
|
}
|
|
|
|
LayoutDeviceIntPoint PuppetWidget::GetChromeOffset() {
|
|
if (!GetOwningBrowserChild()) {
|
|
NS_WARNING("PuppetWidget without Tab does not have chrome information.");
|
|
return LayoutDeviceIntPoint();
|
|
}
|
|
return GetOwningBrowserChild()->GetChromeOffset();
|
|
}
|
|
|
|
LayoutDeviceIntPoint PuppetWidget::WidgetToScreenOffset() {
|
|
return GetWindowPosition() + WidgetToTopLevelWidgetOffset();
|
|
}
|
|
|
|
LayoutDeviceIntPoint PuppetWidget::GetWindowPosition() {
|
|
if (!GetOwningBrowserChild()) {
|
|
return LayoutDeviceIntPoint();
|
|
}
|
|
|
|
int32_t winX, winY, winW, winH;
|
|
NS_ENSURE_SUCCESS(GetOwningBrowserChild()->GetDimensions(
|
|
DimensionKind::Outer, &winX, &winY, &winW, &winH),
|
|
LayoutDeviceIntPoint());
|
|
return LayoutDeviceIntPoint(winX, winY) +
|
|
GetOwningBrowserChild()->GetClientOffset();
|
|
}
|
|
|
|
LayoutDeviceIntRect PuppetWidget::GetScreenBounds() {
|
|
return LayoutDeviceIntRect(WidgetToScreenOffset(), mBounds.Size());
|
|
}
|
|
|
|
uint32_t PuppetWidget::GetMaxTouchPoints() const {
|
|
return mBrowserChild ? mBrowserChild->MaxTouchPoints() : 0;
|
|
}
|
|
|
|
void PuppetWidget::StartAsyncScrollbarDrag(
|
|
const AsyncDragMetrics& aDragMetrics) {
|
|
mBrowserChild->StartScrollbarDrag(aDragMetrics);
|
|
}
|
|
|
|
ScreenIntMargin PuppetWidget::GetSafeAreaInsets() const {
|
|
return mSafeAreaInsets;
|
|
}
|
|
|
|
void PuppetWidget::UpdateSafeAreaInsets(
|
|
const ScreenIntMargin& aSafeAreaInsets) {
|
|
mSafeAreaInsets = aSafeAreaInsets;
|
|
}
|
|
|
|
nsIWidgetListener* PuppetWidget::GetCurrentWidgetListener() {
|
|
if (!mPreviouslyAttachedWidgetListener || !mAttachedWidgetListener) {
|
|
return mAttachedWidgetListener;
|
|
}
|
|
|
|
if (mAttachedWidgetListener->GetView()->IsPrimaryFramePaintSuppressed()) {
|
|
return mPreviouslyAttachedWidgetListener;
|
|
}
|
|
|
|
return mAttachedWidgetListener;
|
|
}
|
|
|
|
void PuppetWidget::ZoomToRect(const uint32_t& aPresShellId,
|
|
const ScrollableLayerGuid::ViewID& aViewId,
|
|
const CSSRect& aRect, const uint32_t& aFlags) {
|
|
if (!mBrowserChild) {
|
|
return;
|
|
}
|
|
|
|
mBrowserChild->ZoomToRect(aPresShellId, aViewId, aRect, aFlags);
|
|
}
|
|
|
|
void PuppetWidget::LookUpDictionary(
|
|
const nsAString& aText, const nsTArray<mozilla::FontRange>& aFontRangeArray,
|
|
const bool aIsVertical, const LayoutDeviceIntPoint& aPoint) {
|
|
if (!mBrowserChild) {
|
|
return;
|
|
}
|
|
|
|
mBrowserChild->SendLookUpDictionary(aText, aFontRangeArray, aIsVertical,
|
|
aPoint);
|
|
}
|
|
|
|
bool PuppetWidget::HasPendingInputEvent() {
|
|
if (!mBrowserChild) {
|
|
return false;
|
|
}
|
|
|
|
bool ret = false;
|
|
|
|
mBrowserChild->GetIPCChannel()->PeekMessages(
|
|
[&ret](const IPC::Message& aMsg) -> bool {
|
|
if (nsContentUtils::IsMessageInputEvent(aMsg)) {
|
|
ret = true;
|
|
return false; // Stop peeking.
|
|
}
|
|
return true;
|
|
});
|
|
|
|
return ret;
|
|
}
|
|
|
|
// TextEventDispatcherListener
|
|
|
|
NS_IMETHODIMP
|
|
PuppetWidget::NotifyIME(TextEventDispatcher* aTextEventDispatcher,
|
|
const IMENotification& aIMENotification) {
|
|
MOZ_ASSERT(aTextEventDispatcher == mTextEventDispatcher);
|
|
|
|
// If there is different text event dispatcher listener for handling
|
|
// text event dispatcher, that means that native keyboard events and
|
|
// IME events are handled in this process. Therefore, we don't need
|
|
// to send any requests and notifications to the parent process.
|
|
if (mNativeTextEventDispatcherListener) {
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
switch (aIMENotification.mMessage) {
|
|
case REQUEST_TO_COMMIT_COMPOSITION:
|
|
return RequestIMEToCommitComposition(false);
|
|
case REQUEST_TO_CANCEL_COMPOSITION:
|
|
return RequestIMEToCommitComposition(true);
|
|
case NOTIFY_IME_OF_FOCUS:
|
|
case NOTIFY_IME_OF_BLUR:
|
|
return NotifyIMEOfFocusChange(aIMENotification);
|
|
case NOTIFY_IME_OF_SELECTION_CHANGE:
|
|
return NotifyIMEOfSelectionChange(aIMENotification);
|
|
case NOTIFY_IME_OF_TEXT_CHANGE:
|
|
return NotifyIMEOfTextChange(aIMENotification);
|
|
case NOTIFY_IME_OF_COMPOSITION_EVENT_HANDLED:
|
|
return NotifyIMEOfCompositionUpdate(aIMENotification);
|
|
case NOTIFY_IME_OF_MOUSE_BUTTON_EVENT:
|
|
return NotifyIMEOfMouseButtonEvent(aIMENotification);
|
|
case NOTIFY_IME_OF_POSITION_CHANGE:
|
|
return NotifyIMEOfPositionChange(aIMENotification);
|
|
default:
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP_(IMENotificationRequests)
|
|
PuppetWidget::GetIMENotificationRequests() {
|
|
return IMENotificationRequests(
|
|
mIMENotificationRequestsOfParent.mWantUpdates |
|
|
IMENotificationRequests::NOTIFY_TEXT_CHANGE |
|
|
IMENotificationRequests::NOTIFY_POSITION_CHANGE);
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
PuppetWidget::OnRemovedFrom(TextEventDispatcher* aTextEventDispatcher) {
|
|
MOZ_ASSERT(aTextEventDispatcher == mTextEventDispatcher);
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
PuppetWidget::WillDispatchKeyboardEvent(
|
|
TextEventDispatcher* aTextEventDispatcher,
|
|
WidgetKeyboardEvent& aKeyboardEvent, uint32_t aIndexOfKeypress,
|
|
void* aData) {
|
|
MOZ_ASSERT(aTextEventDispatcher == mTextEventDispatcher);
|
|
}
|
|
|
|
nsresult PuppetWidget::SetSystemFont(const nsCString& aFontName) {
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mBrowserChild->SendSetSystemFont(aFontName);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PuppetWidget::GetSystemFont(nsCString& aFontName) {
|
|
if (!mBrowserChild) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
mBrowserChild->SendGetSystemFont(&aFontName);
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace widget
|
|
} // namespace mozilla
|