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cc993d1772
They don't need to be NS_IMETHOD, but they should be MOZ_MUST_USE. Adding the latter catches a few missing checks, which the patch adds. The patch also gives PuppetWidget an InfallibleCreate() function, which makes the infallibility of PuppetWidget creation clear.
79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
/* 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 mozilla_widget_RemotePlugin_h__
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#define mozilla_widget_RemotePlugin_h__
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#include "PuppetWidget.h"
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#include "mozilla/dom/TabChild.h"
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/*
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* PluginWidgetProxy is a nsIWidget wrapper we hand around in plugin and layout
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* code. It wraps a native widget it creates in the chrome process. Since this
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* is for plugins, only a limited set of the widget apis need to be overridden,
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* the rest of the implementation is in PuppetWidget or nsBaseWidget.
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*/
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namespace mozilla {
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namespace plugins {
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class PluginWidgetChild;
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} // namespace plugins
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namespace widget {
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class PluginWidgetProxy final : public PuppetWidget
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{
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public:
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explicit PluginWidgetProxy(dom::TabChild* aTabChild,
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mozilla::plugins::PluginWidgetChild* aChannel);
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protected:
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virtual ~PluginWidgetProxy();
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public:
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NS_DECL_ISUPPORTS_INHERITED
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// nsIWidget
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using PuppetWidget::Create; // for Create signature not overridden here
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virtual MOZ_MUST_USE nsresult Create(nsIWidget* aParent,
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nsNativeWidget aNativeParent,
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const LayoutDeviceIntRect& aRect,
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nsWidgetInitData* aInitData = nullptr)
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override;
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virtual void Destroy() override;
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NS_IMETHOD SetFocus(bool aRaise = false) override;
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NS_IMETHOD SetParent(nsIWidget* aNewParent) override;
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virtual nsIWidget* GetParent(void) override;
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virtual void* GetNativeData(uint32_t aDataType) override;
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#if defined(XP_WIN)
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void SetNativeData(uint32_t aDataType, uintptr_t aVal) override;
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#endif
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virtual nsTransparencyMode GetTransparencyMode() override
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{ return eTransparencyOpaque; }
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virtual void GetWindowClipRegion(nsTArray<LayoutDeviceIntRect>* aRects) override;
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public:
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/**
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* When tabs are closed PPluginWidget can terminate before plugin code is
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* finished tearing us down. When this happens plugin calls over mActor
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* fail triggering an abort in the content process. To protect against this
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* the connection tells us when it is torn down here so we can avoid making
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* calls while content finishes tearing us down.
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*/
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void ChannelDestroyed() { mActor = nullptr; }
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private:
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// Our connection with the chrome widget, created on PBrowser.
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mozilla::plugins::PluginWidgetChild* mActor;
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// PuppetWidget does not implement parent apis, but we need
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// them for plugin widgets.
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nsCOMPtr<nsIWidget> mParent;
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uintptr_t mCachedPluginPort;
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};
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} // namespace widget
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} // namespace mozilla
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#endif
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