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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_WEB_DIALOGS_WEB_DIALOG_WEB_CONTENTS_DELEGATE_H_
#define UI_WEB_DIALOGS_WEB_DIALOG_WEB_CONTENTS_DELEGATE_H_
#include <memory>
#include "base/memory/raw_ptr.h"
#include "content/public/browser/web_contents_delegate.h"
#include "ui/web_dialogs/web_dialogs_export.h"
namespace blink {
namespace mojom {
class FileChooserParams;
}
} // namespace blink
namespace content {
class BrowserContext;
class FileSelectListener;
class RenderFrameHost;
}
namespace ui {
// This class implements (and mostly ignores) most of
// content::WebContentsDelegate for use in a Web dialog. Subclasses need only
// override a few methods instead of the everything from
// content::WebContentsDelegate; this way, implementations on all platforms
// behave consistently.
class WEB_DIALOGS_EXPORT WebDialogWebContentsDelegate
: public content::WebContentsDelegate {
public:
// Handles OpenURLFromTab and AddNewContents for WebDialogWebContentsDelegate.
class WebContentsHandler {
public:
virtual ~WebContentsHandler() = default;
// If a `navigation_handle_callback` function is provided, it should be
// called with the pending navigation (if any) when the navigation handle
// become available. This allows callers to observe or attach their specific
// data. `navigation_handle_callback` may not be called if the navigation
// fails for any reason.
virtual content::WebContents* OpenURLFromTab(
content::BrowserContext* context,
content::WebContents* source,
const content::OpenURLParams& params,
base::OnceCallback<void(content::NavigationHandle&)>
navigation_handle_callback) = 0;
virtual void AddNewContents(
content::BrowserContext* context,
content::WebContents* source,
std::unique_ptr<content::WebContents> new_contents,
const GURL& target_url,
WindowOpenDisposition disposition,
const blink::mojom::WindowFeatures& window_features,
bool user_gesture) = 0;
// This is added to allow the injection of a file chooser handler.
// The WebDialogWebContentsDelegate's original implementation does not
// do anything for file chooser request
virtual void RunFileChooser(
content::RenderFrameHost* render_frame_host,
scoped_refptr<content::FileSelectListener> listener,
const blink::mojom::FileChooserParams& params) = 0;
};
// |context| and |handler| must be non-NULL.
WebDialogWebContentsDelegate(content::BrowserContext* context,
std::unique_ptr<WebContentsHandler> handler);
WebDialogWebContentsDelegate(const WebDialogWebContentsDelegate&) = delete;
WebDialogWebContentsDelegate& operator=(const WebDialogWebContentsDelegate&) =
delete;
~WebDialogWebContentsDelegate() override;
// The returned browser context is guaranteed to be original if non-NULL.
content::BrowserContext* browser_context() const {
return browser_context_;
}
// Calling this causes all following events sent from the
// WebContents object to be ignored. It also makes all following
// calls to browser_context() return NULL.
void Detach();
// content::WebContentsDelegate declarations.
content::WebContents* OpenURLFromTab(
content::WebContents* source,
const content::OpenURLParams& params,
base::OnceCallback<void(content::NavigationHandle&)>
navigation_handle_callback) override;
content::WebContents* AddNewContents(
content::WebContents* source,
std::unique_ptr<content::WebContents> new_contents,
const GURL& target_url,
WindowOpenDisposition disposition,
const blink::mojom::WindowFeatures& window_features,
bool user_gesture,
bool* was_blocked) override;
bool PreHandleGestureEvent(content::WebContents* source,
const blink::WebGestureEvent& event) override;
void RunFileChooser(content::RenderFrameHost* render_frame_host,
scoped_refptr<content::FileSelectListener> listener,
const blink::mojom::FileChooserParams& params) override;
private:
// Weak pointer. Always an original profile.
raw_ptr<content::BrowserContext> browser_context_;
std::unique_ptr<WebContentsHandler> const handler_;
};
} // namespace ui
#endif // UI_WEB_DIALOGS_WEB_DIALOG_WEB_CONTENTS_DELEGATE_H_
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