// Copyright 2021 The Chromium Embedded Framework 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 "libcef/browser/chrome/views/chrome_browser_view.h"

#include "libcef/browser/chrome/views/chrome_browser_frame.h"
#include "libcef/browser/views/browser_view_impl.h"

ChromeBrowserView::ChromeBrowserView(CefBrowserViewDelegate* cef_delegate,
                                     Delegate* browser_view_delegate)
    : ParentClass(cef_delegate), browser_view_delegate_(browser_view_delegate) {
  DCHECK(browser_view_delegate_);
}

void ChromeBrowserView::InitBrowser(std::unique_ptr<Browser> browser,
                                    CefRefPtr<CefBrowserView> browser_view) {
  DCHECK(!browser_);
  DCHECK(!web_view_);

  browser_ = browser.get();
  DCHECK(browser_);

  // Initialize the BrowserFrame and BrowserView.
  auto chrome_widget = static_cast<ChromeBrowserFrame*>(GetWidget());
  chrome_widget->Init(this, std::move(browser));

  // Retrieve the views::WebView that was created by the above initializations.
  auto view_impl = static_cast<CefBrowserViewImpl*>(browser_view.get());
  web_view_ = view_impl->web_view();
  DCHECK(web_view_);

  ParentClass::AddedToWidget();
}

void ChromeBrowserView::Destroyed() {
  DCHECK(!destroyed_);
  destroyed_ = true;
  browser_ = nullptr;
  web_view_ = nullptr;
}

void ChromeBrowserView::ViewHierarchyChanged(
    const views::ViewHierarchyChangedDetails& details) {
  ParentClass::ViewHierarchyChanged(details);
  if (details.is_add && details.child == this) {
    gfx::Size size = GetPreferredSize();
    if (size.IsEmpty()) {
      // No size was provided for this View. Size it to the parent by default
      // or, depending on the Layout, the browser may be initially 0x0 size and
      // will not display until the parent is next resized (resulting in a call
      // to WebView::OnBoundsChanged). For example, this can happen when adding
      // this View to a CefWindow with FillLayout and then calling
      // CefWindow::Show() without first resizing the CefWindow.
      size = details.parent->GetPreferredSize();
      if (!size.IsEmpty())
        SetSize(size);
    }
  }
}

void ChromeBrowserView::AddedToWidget() {
  // Results in a call to InitBrowser which calls ParentClass::AddedToWidget.
  browser_view_delegate_->OnBrowserViewAdded();
}

void ChromeBrowserView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
  ParentClass::OnBoundsChanged(previous_bounds);
  browser_view_delegate_->OnBoundsChanged();
}