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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.
#include "components/ui_devtools/ui_element.h"
#include <algorithm>
#include "components/ui_devtools/Protocol.h"
#include "components/ui_devtools/ui_element_delegate.h"
namespace ui_devtools {
namespace {
static int node_ids = 0;
} // namespace
UIElement::~UIElement() {
for (auto* child : children_)
delete child;
children_.clear();
}
std::string UIElement::GetTypeName() const {
switch (type_) {
case UIElementType::ROOT:
return "Root";
case UIElementType::WINDOW:
return "Window";
case UIElementType::WIDGET:
return "Widget";
case UIElementType::VIEW:
return "View";
}
NOTREACHED();
return std::string();
}
void UIElement::AddChild(UIElement* child, UIElement* before) {
if (before) {
auto iter = std::find(children_.begin(), children_.end(), before);
DCHECK(iter != children_.end());
children_.insert(iter, child);
} else {
children_.push_back(child);
}
delegate_->OnUIElementAdded(this, child);
}
void UIElement::RemoveChild(UIElement* child) {
delegate()->OnUIElementRemoved(child);
auto iter = std::find(children_.begin(), children_.end(), child);
DCHECK(iter != children_.end());
children_.erase(iter);
}
void UIElement::ReorderChild(UIElement* child, int new_index) {
auto iter = std::find(children_.begin(), children_.end(), child);
DCHECK(iter != children_.end());
// Don't re-order if the new position is the same as the old position.
if (std::distance(children_.begin(), iter) == new_index)
return;
children_.erase(iter);
// Move child to new position |new_index| in vector |children_|.
new_index = std::min(static_cast<int>(children_.size()) - 1, new_index);
iter = children_.begin() + new_index;
children_.insert(iter, child);
delegate()->OnUIElementReordered(child->parent(), child);
}
template <class T>
int UIElement::FindUIElementIdForBackendElement(T* element) const {
NOTREACHED();
return 0;
}
UIElement::UIElement(const UIElementType type,
UIElementDelegate* delegate,
UIElement* parent)
: node_id_(++node_ids), type_(type), parent_(parent), delegate_(delegate) {
delegate_->OnUIElementAdded(nullptr, this);
}
} // namespace ui_devtools
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