124 lines
4.2 KiB
C++
124 lines
4.2 KiB
C++
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ATOM_BROWSER_WEB_VIEW_GUEST_DELEGATE_H_
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#define ATOM_BROWSER_WEB_VIEW_GUEST_DELEGATE_H_
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#include "atom/browser/web_contents_zoom_controller.h"
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#include "content/public/browser/browser_plugin_guest_delegate.h"
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#include "content/public/browser/web_contents_observer.h"
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namespace atom {
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namespace api {
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class WebContents;
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}
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// A struct of parameters for SetSize(). The parameters are all declared as
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// scoped pointers since they are all optional. Null pointers indicate that the
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// parameter has not been provided, and the last used value should be used. Note
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// that when |enable_auto_size| is true, providing |normal_size| is not
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// meaningful. This is because the normal size of the guestview is overridden
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// whenever autosizing occurs.
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struct SetSizeParams {
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SetSizeParams() {}
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~SetSizeParams() {}
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std::unique_ptr<bool> enable_auto_size;
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std::unique_ptr<gfx::Size> min_size;
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std::unique_ptr<gfx::Size> max_size;
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std::unique_ptr<gfx::Size> normal_size;
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};
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class WebViewGuestDelegate : public content::BrowserPluginGuestDelegate,
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public content::WebContentsObserver,
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public WebContentsZoomController::Observer {
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public:
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WebViewGuestDelegate();
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~WebViewGuestDelegate() override;
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void Initialize(api::WebContents* api_web_contents);
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// Called when the WebContents is going to be destroyed.
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void Destroy();
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// Used to toggle autosize mode for this GuestView, and set both the automatic
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// and normal sizes.
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void SetSize(const SetSizeParams& params);
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protected:
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// content::WebContentsObserver:
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void DidFinishNavigation(
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content::NavigationHandle* navigation_handle) override;
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// content::BrowserPluginGuestDelegate:
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void DidAttach(int guest_proxy_routing_id) final;
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content::WebContents* GetOwnerWebContents() const final;
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void GuestSizeChanged(const gfx::Size& new_size) final;
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void SetGuestHost(content::GuestHost* guest_host) final;
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void WillAttach(content::WebContents* embedder_web_contents,
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int element_instance_id,
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bool is_full_page_plugin,
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const base::Closure& completion_callback) final;
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bool CanBeEmbeddedInsideCrossProcessFrames() override;
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content::RenderWidgetHost* GetOwnerRenderWidgetHost() override;
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content::SiteInstance* GetOwnerSiteInstance() override;
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// WebContentsZoomController::Observer:
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void OnZoomLevelChanged(content::WebContents* web_contents,
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double level,
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bool is_temporary) override;
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private:
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// This method is invoked when the contents auto-resized to give the container
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// an opportunity to match it if it wishes.
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//
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// This gives the derived class an opportunity to inform its container element
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// or perform other actions.
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void GuestSizeChangedDueToAutoSize(const gfx::Size& old_size,
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const gfx::Size& new_size);
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// Returns the default size of the guestview.
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gfx::Size GetDefaultSize() const;
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// The WebContents that attaches this guest view.
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content::WebContents* embedder_web_contents_;
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// The zoom controller of the embedder that is used
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// to subscribe for zoom changes.
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WebContentsZoomController* embedder_zoom_controller_;
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// The size of the container element.
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gfx::Size element_size_;
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// The size of the guest content. Note: In autosize mode, the container
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// element may not match the size of the guest.
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gfx::Size guest_size_;
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// A pointer to the guest_host.
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content::GuestHost* guest_host_;
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// Indicates whether autosize mode is enabled or not.
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bool auto_size_enabled_;
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// The maximum size constraints of the container element in autosize mode.
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gfx::Size max_auto_size_;
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// The minimum size constraints of the container element in autosize mode.
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gfx::Size min_auto_size_;
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// The size that will be used when autosize mode is disabled.
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gfx::Size normal_size_;
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// Whether the guest view is inside a plugin document.
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bool is_full_page_plugin_;
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api::WebContents* api_web_contents_;
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DISALLOW_COPY_AND_ASSIGN(WebViewGuestDelegate);
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};
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} // namespace atom
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#endif // ATOM_BROWSER_WEB_VIEW_GUEST_DELEGATE_H_
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