blob: cba532ba0d3c36e0e68472e8e0fa1efa78622dbe [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_MESSAGE_CENTER_VIEWS_POPUP_ALIGNMENT_DELEGATE_H_
#define UI_MESSAGE_CENTER_VIEWS_POPUP_ALIGNMENT_DELEGATE_H_
#include "ui/message_center/message_center_export.h"
#include "ui/views/widget/widget.h"
namespace gfx {
class Point;
class Rect;
}
namespace display {
class Display;
}
namespace message_center {
class MessagePopupCollection;
class MESSAGE_CENTER_EXPORT PopupAlignmentDelegate {
public:
PopupAlignmentDelegate();
void set_collection(MessagePopupCollection* collection) {
collection_ = collection;
}
// Returns the x-origin for the given toast bounds in the current work area.
virtual int GetToastOriginX(const gfx::Rect& toast_bounds) const = 0;
// Returns the baseline height of the current work area. That is the starting
// point if there are no other toasts.
virtual int GetBaseLine() const = 0;
// Returns the height of the bottom of the current work area.
virtual int GetWorkAreaBottom() const = 0;
// Returns true if the toast should be aligned top down.
virtual bool IsTopDown() const = 0;
// Returns true if the toasts are positioned at the left side of the desktop
// so that their reveal animation should happen from left side.
virtual bool IsFromLeft() const = 0;
// Called when a new toast appears or toasts are rearranged in the |display|.
// The subclass may override this method to check the current desktop status
// so that the toasts are arranged at the correct place.
virtual void RecomputeAlignment(const display::Display& display) = 0;
// Sets the parent container for popups. If it does not set a parent a
// default parent will be used (e.g. the native desktop on Windows).
virtual void ConfigureWidgetInitParamsForContainer(
views::Widget* widget,
views::Widget::InitParams* init_params) = 0;
protected:
virtual ~PopupAlignmentDelegate();
void DoUpdateIfPossible();
private:
MessagePopupCollection* collection_;
};
} // namespace message_center
#endif // UI_MESSAGE_CENTER_VIEWS_POPUP_ALIGNMENT_DELEGATE_H_