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// Copyright (c) 2011 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_VIEWS_WIDGET_TOOLTIP_MANAGER_H_
#define UI_VIEWS_WIDGET_TOOLTIP_MANAGER_H_
#include <string>
#include "base/basictypes.h"
#include "base/strings/string16.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/views_export.h"
namespace gfx {
class Display;
class FontList;
} // namespace gfx
namespace views {
class View;
// TooltipManager takes care of the wiring to support tooltips for Views. You
// almost never need to interact directly with TooltipManager, rather look to
// the various tooltip methods on View.
class VIEWS_EXPORT TooltipManager {
public:
// When a NativeView has capture all events are delivered to it. In some
// situations, such as menus, we want the tooltip to be shown for the
// NativeView the mouse is over, even if it differs from the NativeView that
// has capture (with menus the first menu shown has capture). To enable this
// if the NativeView that has capture has the same value for the property
// |kGroupingPropertyKey| as the NativeView the mouse is over the tooltip is
// shown.
static const char kGroupingPropertyKey[];
TooltipManager() {}
virtual ~TooltipManager() {}
// Returns the maximum width of the tooltip. |x| and |y| give the location
// the tooltip is to be displayed on in screen coordinates. |context| is
// used to determine which gfx::Screen should be used.
static int GetMaxWidth(int x, int y, gfx::NativeView context);
// Same as GetMaxWidth(), but takes a Display.
static int GetMaxWidth(const gfx::Display& display);
// If necessary trims the text of a tooltip to ensure we don't try to display
// a mega-tooltip.
static void TrimTooltipText(base::string16* text);
// Returns the font list used for tooltips.
virtual const gfx::FontList& GetFontList() const = 0;
// Notification that the view hierarchy has changed in some way.
virtual void UpdateTooltip() = 0;
// Invoked when the tooltip text changes for the specified views.
virtual void TooltipTextChanged(View* view) = 0;
};
} // namespace views
#endif // UI_VIEWS_WIDGET_TOOLTIP_MANAGER_H_
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