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// Copyright 2022 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/sharing_hub/preview_view.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/ui/sharing_hub/sharing_hub_bubble_controller.h"
#include "components/url_formatter/elide_url.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/flex_layout.h"
#include "ui/views/layout/flex_layout_types.h"
#include "ui/views/view_class_properties.h"
namespace sharing_hub {
namespace {
class UrlLabel : public views::Label {
METADATA_HEADER(UrlLabel, views::Label)
public:
UrlLabel(GURL url, int context, int style)
: views::Label(base::UTF8ToUTF16(url.spec()), context, style), url_(url) {
// Never use the elided URL for the accessible name or tooltip - both of
// these are allowed to be of arbitrary length (since they aren't
// constrained by the visual layout) and should give the user the full URL.
GetViewAccessibility().SetName(std::u16string(GetText()));
SetCustomTooltipText(GetText());
}
~UrlLabel() override = default;
void OnBoundsChanged(const gfx::Rect& previous) override {
// Danger! Do not repurpose this behavior for your own use!
//
// It is safe to change the text in response to a layout like this *only*
// because the UrlLabel is included in a fixed-width bubble. If the bubble
// instead had variable width, or this view's width could otherwise change,
// then it would be very easy to get into an infinite loop between setting
// the text (thus prompting a relayout) and the layout setting the width
// (thus causing the text to be set again). Since the bubble containing the
// UrlLabel has a fixed width, this infinite recurrence can't happen.
views::Label::OnBoundsChanged(previous);
SetText(url_formatter::ElideUrl(url_, font_list(), width()));
}
private:
GURL url_;
};
BEGIN_METADATA(UrlLabel)
END_METADATA
} // namespace
// This view uses two nested FlexLayouts, a horizontal outer one and a vertical
// inner one, to create a composite layout where the icon is aligned with the
// title and URL taken together. The resulting View tree looks like this:
// PreviewView [FlexLayout, horizontal]
// ImageView
// View [FlexLayout, vertical]
// Label (title)
// Label (URL)
PreviewView::PreviewView(share::ShareAttempt attempt) {
// These values are all directly from the Figma redlines. See
// https://crbug.com/1314486 and https://crbug.com/1316473.
constexpr gfx::Insets kInteriorMargin = gfx::Insets::VH(8, 8);
constexpr gfx::Insets kDefaultMargin = gfx::Insets::VH(0, 16);
constexpr gfx::Size kImageSize{16, 16};
auto* layout = SetLayoutManager(std::make_unique<views::FlexLayout>());
layout->SetOrientation(views::LayoutOrientation::kHorizontal)
.SetMainAxisAlignment(views::LayoutAlignment::kStart)
.SetCrossAxisAlignment(views::LayoutAlignment::kCenter)
.SetInteriorMargin(kInteriorMargin)
.SetDefault(views::kMarginsKey, kDefaultMargin)
.SetCollapseMargins(true);
image_ =
AddChildView(std::make_unique<views::ImageView>(attempt.preview_image));
image_->SetPreferredSize(kImageSize);
auto* labels_container = AddChildView(std::make_unique<views::View>());
labels_container->SetProperty(
views::kFlexBehaviorKey,
views::FlexSpecification(views::MinimumFlexSizeRule::kScaleToZero));
auto* labels_layout =
labels_container->SetLayoutManager(std::make_unique<views::FlexLayout>());
labels_layout->SetOrientation(views::LayoutOrientation::kVertical)
.SetMainAxisAlignment(views::LayoutAlignment::kCenter)
.SetCrossAxisAlignment(views::LayoutAlignment::kStart)
.SetDefault(
views::kFlexBehaviorKey,
views::FlexSpecification(views::MinimumFlexSizeRule::kScaleToZero));
// TODO(ellyjones): These do not exactly match the redlines, which call for
// 14pt Roboto specifically. We should probably update the redlines to not
// use a hardcoded font, but we could also specify the font more explicitly
// here.
title_ = labels_container->AddChildView(std::make_unique<views::Label>(
attempt.title, views::style::CONTEXT_DIALOG_BODY_TEXT));
title_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
url_ = labels_container->AddChildView(std::make_unique<UrlLabel>(
attempt.url, views::style::CONTEXT_DIALOG_BODY_TEXT,
views::style::STYLE_HINT));
url_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
}
PreviewView::~PreviewView() = default;
BEGIN_METADATA(PreviewView)
END_METADATA
} // namespace sharing_hub
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