Create a unified UIElement interface for Widget, View and Window.

ash/devtools/ui_element.cc

+// 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.
+
+#include "ash/devtools/ui_element.h"
+
+#include "ash/devtools/ui_element_delegate.h"
+#include "ash/devtools/view_element.h"
+#include "ash/devtools/widget_element.h"
+#include "ash/devtools/window_element.h"
+
+namespace ash {
+namespace devtools {
+
+int UIElement::GetNodeId() {
+  return node_id_;
+}
+
+void UIElement::SetNodeId(int node_id) {
+  node_id_ = node_id;
+}
+
+UIElement* UIElement::GetParent() {
+  return parent_;
+}
+
+UIElementDelegate* UIElement::delegate() {
+  return ui_element_delegate_;
+}
+
+UIElementType UIElement::GetType() {
+  return type_;
+}
+
+const std::vector<UIElement*>& UIElement::GetChildren() const {
+  return children_;
+}
+
+void UIElement::AddChild(std::vector<UIElement*>::iterator index,
+                         UIElement* child) {
+  children_.insert(index, child);
+}
+
+void UIElement::PushBackChild(UIElement* child) {
+  children_.push_back(child);
+}
+
+void UIElement::RemoveChild(std::vector<UIElement*>::iterator index) {
+  children_.erase(index);
+}
+
+void UIElement::RemoveChildFromParent() {
+  if (GetParent()) {
+    std::vector<UIElement*>::iterator object = ChildIndexFromParent();
+    if (object != GetParent()->LastChildIterator())
+      GetParent()->RemoveChild(object);
+  }
+}
+
+UIElement* UIElement::LastChild() {
+  return children_.back();
+}
+
+std::vector<UIElement*>::iterator UIElement::FindChildIterator(
+    UIElement* child) {
+  return std::find_if(children_.begin(), children_.end(), [&](UIElement* obj) {
+    return obj->GetNodeId() == child->GetNodeId();
+  });
+}
+
+std::vector<UIElement*>::iterator UIElement::BeginChildIterator() {
+  return children_.begin();
+}
+
+std::vector<UIElement*>::iterator UIElement::LastChildIterator() {
+  return children_.end();
+}
+
+std::vector<UIElement*>::iterator UIElement::ChildIndexFromParent() {
+  if (GetParent())
+    return GetParent()->FindChildIterator(this);
+  return children_.end();
+}
+
+UIElement::UIElement(const UIElementType type,
+                     UIElementDelegate* ui_element_delegate,
+                     UIElement* parent)
+    : type_(type), parent_(parent), ui_element_delegate_(ui_element_delegate) {}
+
+UIElement::~UIElement() {
+  for (auto* child : children_)
+    if (child)
+      delete child;
+  children_.clear();
+}
+
+}  // namespace devtools
+}  // namespace ash