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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_GLIC_WIDGET_BROWSER_CONDITIONS_H_
#define CHROME_BROWSER_GLIC_WIDGET_BROWSER_CONDITIONS_H_
#include <memory>
class Browser;
class Profile;
namespace glic {
// Returns the browser the glic window would attach to, if the user pressed
// the attach button on the window. Returns null if attachment is not possible.
Browser* FindBrowserForAttachment(Profile* profile);
// Returns whether `browser` can be used for attaching the glic panel for the
// given profile.
bool IsBrowserGlicAttachable(Profile* profile, Browser* browser);
// Returns whether 'browser' is in the foreground. This is based on active
// state and on windows includes a occlusion check.
bool IsBrowserInForeground(Browser* browser);
// Observes changes to what value FindBrowserForAttachment() would return.
class BrowserAttachObserver {
public:
// Informs the observer that the browser for attachment has changed. Null if
// no browser is available for attachment.
virtual void BrowserForAttachmentChanged(Browser* browser) {}
// Informs the observer that the value of `CanAttachToBrowser()` has changed.
virtual void CanAttachToBrowserChanged(bool can_attach) {}
};
class BrowserAttachObservation {
protected:
BrowserAttachObservation() = default;
public:
BrowserAttachObservation(const BrowserAttachObservation&) = delete;
BrowserAttachObservation& operator=(const BrowserAttachObservation&) = delete;
virtual ~BrowserAttachObservation() = default;
// Whether a browser is available for attachment right now.
virtual bool CanAttachToBrowser() const = 0;
};
// Observes BrowserAttachObserver events until the returned observation is
// destroyed.
std::unique_ptr<BrowserAttachObservation> ObserveBrowserForAttachment(
Profile* profile,
BrowserAttachObserver* observer);
} // namespace glic
#endif // CHROME_BROWSER_GLIC_WIDGET_BROWSER_CONDITIONS_H_
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