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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_RENDERER_HOST_PAGE_DELEGATE_H_
#define CONTENT_BROWSER_RENDERER_HOST_PAGE_DELEGATE_H_
namespace content {
class PageImpl;
// Interface implemented by an object (in practice, WebContentsImpl) which
// owns (possibly indirectly) and is interested in knowing about the state of
// one or more Pages. It must outlive the Page.
class PageDelegate {
public:
// Called when a paint happens after the first non empty layout. In other
// words, after the page has painted something.
virtual void OnFirstVisuallyNonEmptyPaint(PageImpl& page) {}
// Called when the theme color (from the theme-color meta tag) has changed.
virtual void OnThemeColorChanged(PageImpl& page) {}
// Called when the main document background color has changed.
virtual void OnBackgroundColorChanged(PageImpl& page) {}
// Called when the main document color scheme was inferred.
virtual void DidInferColorScheme(PageImpl& page) {}
// Called when the main document's virtual keyboard mode changes.
virtual void OnVirtualKeyboardModeChanged(PageImpl& page) {}
// Called when `page` becomes primary in its FrameTree.
virtual void NotifyPageBecamePrimary(PageImpl& page) = 0;
// Tells if `page` should be handled as in preview mode.
virtual bool IsPageInPreviewMode() const = 0;
// Notifies `BrowserView` about the resizable boolean having been set vith
// `window.setResizable(bool)` API.
virtual void OnWebApiWindowResizableChanged() = 0;
// Notify the page uses a forbidden powerful API and cannot be shown in
// preview mode.
virtual void CancelPreviewByMojoBinderPolicy(
const std::string& interface_name) = 0;
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_PAGE_DELEGATE_H_
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