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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_VIEWS_EXAMPLES_LABEL_EXAMPLE_H_
#define UI_VIEWS_EXAMPLES_LABEL_EXAMPLE_H_
#include "base/containers/span.h"
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "ui/views/controls/textfield/textfield_controller.h"
#include "ui/views/examples/example_base.h"
#include "ui/views/view_observer.h"
namespace views {
class Checkbox;
class Combobox;
class Label;
class View;
namespace examples {
class VIEWS_EXAMPLES_EXPORT LabelExample : public ExampleBase,
public TextfieldController,
public ViewObserver {
public:
LabelExample();
LabelExample(const LabelExample&) = delete;
LabelExample& operator=(const LabelExample&) = delete;
~LabelExample() override;
// ExampleBase:
void CreateExampleView(View* container) override;
void MultilineCheckboxPressed();
void ShadowsCheckboxPressed();
void SelectableCheckboxPressed();
// TextfieldController:
void ContentsChanged(Textfield* sender,
const std::u16string& new_contents) override;
// ViewObserver:
void OnViewThemeChanged(View* observed_view) override;
void OnViewIsDeleting(View* observed_view) override;
private:
// Add a customizable label and various controls to modify its presentation.
void AddCustomLabel(View* container);
// Creates and adds a combobox to the layout.
Combobox* AddCombobox(View* parent,
std::u16string name,
base::span<const char* const> items,
void (LabelExample::*function)());
void AlignmentChanged();
void ElidingChanged();
raw_ptr<Textfield> textfield_ = nullptr;
raw_ptr<Combobox> alignment_ = nullptr;
raw_ptr<Combobox> elide_behavior_ = nullptr;
raw_ptr<Checkbox> multiline_ = nullptr;
raw_ptr<Checkbox> shadows_ = nullptr;
raw_ptr<Checkbox> selectable_ = nullptr;
raw_ptr<Label> label_ = nullptr;
raw_ptr<Label> custom_label_ = nullptr;
base::ScopedObservation<View, ViewObserver> observer_{this};
};
} // namespace examples
} // namespace views
#endif // UI_VIEWS_EXAMPLES_LABEL_EXAMPLE_H_
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