File: close_bubble_on_tab_activation_helper.cc

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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ui/views/close_bubble_on_tab_activation_helper.h"

#include "chrome/browser/ui/browser.h"
#include "ui/views/bubble/bubble_dialog_delegate_view.h"
#include "ui/views/widget/widget.h"

CloseBubbleOnTabActivationHelper::CloseBubbleOnTabActivationHelper(
    views::BubbleDialogDelegateView* owner_bubble,
    TabStripModel* tab_strip_model)
    : owner_bubble_(owner_bubble) {
  CHECK(owner_bubble_);
  CHECK(tab_strip_model);
  // `AddObserver` called asymmetrically, with no `RemoveObserver` call in this
  // class as `TabStripModel` removes itself.
  tab_strip_model->AddObserver(this);
}

CloseBubbleOnTabActivationHelper::~CloseBubbleOnTabActivationHelper() = default;

void CloseBubbleOnTabActivationHelper::OnTabStripModelChanged(
    TabStripModel* tab_strip_model,
    const TabStripModelChange& change,
    const TabStripSelectionChange& selection) {
  if (tab_strip_model->empty() || !selection.active_tab_changed()) {
    return;
  }

  if (owner_bubble_) {
    views::Widget* bubble_widget = owner_bubble_->GetWidget();
    if (bubble_widget) {
      bubble_widget->Close();
    }
    owner_bubble_ = nullptr;
  }
}