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// Copyright 2017 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 COMPONENTS_UI_DEVTOOLS_UI_ELEMENT_H_
#define COMPONENTS_UI_DEVTOOLS_UI_ELEMENT_H_
#include <memory>
#include <vector>
#include "base/macros.h"
#include "components/ui_devtools/devtools_export.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/native_widget_types.h"
namespace ui_devtools {
class UIElementDelegate;
namespace protocol {
template <typename T>
class Array;
}
// UIElement type.
enum UIElementType { WINDOW, WIDGET, VIEW, ROOT, FRAMESINK };
class UI_DEVTOOLS_EXPORT UIElement {
public:
virtual ~UIElement();
int node_id() const { return node_id_; };
std::string GetTypeName() const;
UIElement* parent() const { return parent_; };
UIElementDelegate* delegate() const { return delegate_; };
UIElementType type() const { return type_; };
const std::vector<UIElement*>& children() const { return children_; };
// |child| is inserted in front of |before|. If |before| is null, it
// is inserted at the end. Parent takes ownership of the added child.
void AddChild(UIElement* child, UIElement* before = nullptr);
// Remove |child| out of vector |children_| but |child| is not destroyed.
// The caller is responsible for destroying |child|.
void RemoveChild(UIElement* child);
// Move |child| to position new_index in |children_|.
void ReorderChild(UIElement* child, int new_index);
template <class T>
int FindUIElementIdForBackendElement(T* element) const;
// Return a vector of pairs of properties' names and values.
virtual std::vector<std::pair<std::string, std::string>> GetCustomProperties()
const = 0;
virtual void GetBounds(gfx::Rect* bounds) const = 0;
virtual void SetBounds(const gfx::Rect& bounds) = 0;
virtual void GetVisible(bool* visible) const = 0;
virtual void SetVisible(bool visible) = 0;
// If element exists, return its associated native window and its bounds.
// Otherwise, return null and empty bounds.
virtual std::pair<gfx::NativeWindow, gfx::Rect> GetNodeWindowAndBounds()
const = 0;
// Get a list of interleaved keys and values of attributes to be displayed
// on the element in the dev tools hierarchy view.
virtual std::unique_ptr<protocol::Array<std::string>> GetAttributes()
const = 0;
template <typename BackingT, typename T>
static BackingT* GetBackingElement(const UIElement* element) {
return T::From(element);
};
protected:
UIElement(const UIElementType type,
UIElementDelegate* delegate,
UIElement* parent);
private:
const int node_id_;
const UIElementType type_;
std::vector<UIElement*> children_;
UIElement* parent_;
UIElementDelegate* delegate_;
DISALLOW_COPY_AND_ASSIGN(UIElement);
};
} // namespace ui_devtools
#endif // COMPONENTS_UI_DEVTOOLS_UI_ELEMENT_H_
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