chrome/browser/ui/views/extensions/extension_popup.cc

// Copyright (c) 2012 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 "chrome/browser/ui/views/extensions/extension_popup.h"

#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/devtools/devtools_window.h"
#include "chrome/browser/extensions/extension_view_host.h"
#include "chrome/browser/ui/browser.h"
#include "content/public/browser/devtools_agent_host.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/views/bubble/bubble_frame_view.h"
#include "ui/views/controls/native/native_view_host.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"

// The minimum/maximum dimensions of the popup.
// The minimum is just a little larger than the size of the button itself.
// The maximum is an arbitrary number that should be smaller than most screens.
const int ExtensionPopup::kMinWidth = 25;
const int ExtensionPopup::kMinHeight = 25;
const int ExtensionPopup::kMaxWidth = 800;
const int ExtensionPopup::kMaxHeight = 600;

#if !defined(USE_AURA)
// static
void ExtensionPopup::ShowPopup(
    std::unique_ptr<extensions::ExtensionViewHost> host,
    views::View* anchor_view,
    views::BubbleBorder::Arrow arrow,
    ShowAction show_action) {
  auto* popup =
      new ExtensionPopup(host.release(), anchor_view, arrow, show_action);
  views::BubbleDialogDelegateView::CreateBubble(popup);
}
#endif

ExtensionPopup::ExtensionPopup(extensions::ExtensionViewHost* host,
                               views::View* anchor_view,
                               views::BubbleBorder::Arrow arrow,
                               ShowAction show_action)
    : BubbleDialogDelegateView(anchor_view,
                               arrow,
                               views::BubbleBorder::SMALL_SHADOW),
      host_(host) {
  show_action_ = show_action;
  set_margins(gfx::Insets());
  SetLayoutManager(std::make_unique<views::FillLayout>());
  AddChildView(GetExtensionView());
  GetExtensionView()->set_container(this);
  // ExtensionPopup closes itself on very specific de-activation conditions.
  set_close_on_deactivate(false);

  // Listen for the containing view calling window.close();
  registrar_.Add(
      this,
      extensions::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
      content::Source<content::BrowserContext>(host->browser_context()));
  content::DevToolsAgentHost::AddObserver(this);
  observer_.Add(GetExtensionView()->GetBrowser()->tab_strip_model());

  // If the host had somehow finished loading, then we'd miss the notification
  // and not show.  This seems to happen in single-process mode.
  if (host_->has_loaded_once()) {
    ShowBubble();
  } else {
    // Wait to show the popup until the contained host finishes loading.
    registrar_.Add(this,
                   content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
                   content::Source<content::WebContents>(
                       host_->host_contents()));
  }
}

ExtensionPopup::~ExtensionPopup() {
  content::DevToolsAgentHost::RemoveObserver(this);
}

int ExtensionPopup::GetDialogButtons() const {
  return ui::DIALOG_BUTTON_NONE;
}

void ExtensionPopup::OnWidgetActivationChanged(views::Widget* widget,
                                               bool active) {
  // Don't close if we haven't shown the widget yet (the widget is shown once
  // the WebContents finishes loading).
  if (GetWidget()->IsVisible() && active && widget == anchor_widget())
    CloseUnlessUnderInspection();
}

bool ExtensionPopup::ShouldHaveRoundCorners() const {
  return false;
}

void ExtensionPopup::Observe(int type,
                             const content::NotificationSource& source,
                             const content::NotificationDetails& details) {
  switch (type) {
    case content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME:
      DCHECK_EQ(host()->host_contents(),
                content::Source<content::WebContents>(source).ptr());
      // Show when the content finishes loading and its width is computed.
      ShowBubble();
      break;
    case extensions::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE:
      // If we aren't the host of the popup, then disregard the notification.
      if (content::Details<extensions::ExtensionHost>(host()) == details)
        GetWidget()->Close();
      break;
    default:
      NOTREACHED() << "Received unexpected notification";
  }
}

void ExtensionPopup::DevToolsAgentHostAttached(
    content::DevToolsAgentHost* agent_host) {
  if (host()->host_contents() == agent_host->GetWebContents())
    show_action_ = SHOW_AND_INSPECT;
}

void ExtensionPopup::DevToolsAgentHostDetached(
    content::DevToolsAgentHost* agent_host) {
  if (host()->host_contents() == agent_host->GetWebContents())
    show_action_ = SHOW;
}

ExtensionViewViews* ExtensionPopup::GetExtensionView() {
  return static_cast<ExtensionViewViews*>(host_.get()->view());
}

void ExtensionPopup::OnExtensionSizeChanged(ExtensionViewViews* view) {
  SizeToContents();
}

gfx::Size ExtensionPopup::CalculatePreferredSize() const {
  // Constrain the size to popup min/max.
  gfx::Size sz = views::View::CalculatePreferredSize();
  sz.set_width(std::max(kMinWidth, std::min(kMaxWidth, sz.width())));
  sz.set_height(std::max(kMinHeight, std::min(kMaxHeight, sz.height())));
  return sz;
}

void ExtensionPopup::AddedToWidget() {
  const int radius =
      GetBubbleFrameView()->bubble_border()->GetBorderCornerRadius();
  const bool contents_has_rounded_corners =
      GetExtensionView()->holder()->SetCornerRadius(radius);
  SetBorder(views::CreateEmptyBorder(
      gfx::Insets(contents_has_rounded_corners ? 0 : radius, 0)));
}

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

void ExtensionPopup::CloseUnlessUnderInspection() {
  if (show_action_ == SHOW)
    GetWidget()->Close();
}

void ExtensionPopup::ShowBubble() {
  GetWidget()->Show();

  // Focus on the host contents when the bubble is first shown.
  host()->host_contents()->Focus();

  if (show_action_ == SHOW_AND_INSPECT) {
    DevToolsWindow::OpenDevToolsWindow(
        host()->host_contents(), DevToolsToggleAction::ShowConsolePanel());
  }
}