// Copyright 2016 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 "third_party/blink/renderer/core/editing/commands/apply_style_command.h"

#include "third_party/blink/renderer/core/css/css_property_value_set.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/editing/editing_style.h"
#include "third_party/blink/renderer/core/editing/frame_selection.h"
#include "third_party/blink/renderer/core/editing/selection_template.h"
#include "third_party/blink/renderer/core/editing/testing/editing_test_base.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/platform/heap/heap.h"

namespace blink {

class ApplyStyleCommandTest : public EditingTestBase {};

// This is a regression test for https://crbug.com/675727
TEST_F(ApplyStyleCommandTest, RemoveRedundantBlocksWithStarEditableStyle) {
  // The second <div> below is redundant from Blink's perspective (no siblings
  // && no attributes) and will be removed by
  // |DeleteSelectionCommand::removeRedundantBlocks()|.
  SetBodyContent(
      "<div><div>"
      "<div></div>"
      "<ul>"
      "<li>"
      "<div></div>"
      "<input>"
      "<style> * {-webkit-user-modify: read-write;}</style><div></div>"
      "</li>"
      "</ul></div></div>");

  Element* li = GetDocument().QuerySelector("li");

  LocalFrame* frame = GetDocument().GetFrame();
  frame->Selection().SetSelection(
      SelectionInDOMTree::Builder()
          .Collapse(Position(li, PositionAnchorType::kBeforeAnchor))
          .Build(),
      SetSelectionOptions());

  auto* style =
      MakeGarbageCollected<MutableCSSPropertyValueSet>(kHTMLQuirksMode);
  style->SetProperty(CSSPropertyID::kTextAlign, "center", /* important */ false,
                     SecureContextMode::kInsecureContext);
  MakeGarbageCollected<ApplyStyleCommand>(
      GetDocument(), MakeGarbageCollected<EditingStyle>(style),
      InputEvent::InputType::kFormatJustifyCenter,
      ApplyStyleCommand::kForceBlockProperties)
      ->Apply();
  // Shouldn't crash.
}

// This is a regression test for https://crbug.com/761280
TEST_F(ApplyStyleCommandTest, JustifyRightDetachesDestination) {
  SetBodyContent(
      "<style>"
      ".CLASS1{visibility:visible;}"
      "*:last-child{visibility:collapse;display:list-item;}"
      "</style>"
      "<input class=CLASS1>"
      "<ruby>"
      "<button class=CLASS1></button>"
      "<button></button>"
      "</ruby");
  Element* body = GetDocument().body();
  // The bug doesn't reproduce with a contenteditable <div> as container.
  body->setAttribute(html_names::kContenteditableAttr, "true");
  GetDocument().UpdateStyleAndLayout(DocumentUpdateReason::kTest);
  Selection().SelectAll();

  auto* style =
      MakeGarbageCollected<MutableCSSPropertyValueSet>(kHTMLQuirksMode);
  style->SetProperty(CSSPropertyID::kTextAlign, "right", /* important */ false,
                     SecureContextMode::kInsecureContext);
  MakeGarbageCollected<ApplyStyleCommand>(
      GetDocument(), MakeGarbageCollected<EditingStyle>(style),
      InputEvent::InputType::kFormatJustifyCenter,
      ApplyStyleCommand::kForceBlockProperties)
      ->Apply();
  // Shouldn't crash.
}

// This is a regression test for https://crbug.com/726992
TEST_F(ApplyStyleCommandTest, FontSizeDeltaWithSpanElement) {
  Selection().SetSelection(
      SetSelectionTextToBody(
          "<div contenteditable>^<div></div>a<span></span>|</div>"),
      SetSelectionOptions());

  auto* style = MakeGarbageCollected<MutableCSSPropertyValueSet>(kUASheetMode);
  style->SetProperty(CSSPropertyID::kInternalFontSizeDelta, "3px",
                     /* important */ false,
                     GetFrame().DomWindow()->GetSecureContextMode());
  MakeGarbageCollected<ApplyStyleCommand>(
      GetDocument(), MakeGarbageCollected<EditingStyle>(style),
      InputEvent::InputType::kNone)
      ->Apply();
  EXPECT_EQ("<div contenteditable><div></div><span>^a|</span></div>",
            GetSelectionTextFromBody());
}

// This is a regression test for https://crbug.com/1172007
TEST_F(ApplyStyleCommandTest, JustifyRightWithSVGForeignObject) {
  GetDocument().setDesignMode("on");
  Selection().SetSelection(
      SetSelectionTextToBody("<svg>"
                             "<foreignObject>1</foreignObject>"
                             "<foreignObject>&#x20;2^<b></b>|</foreignObject>"
                             "</svg>"),
      SetSelectionOptions());

  auto* style = MakeGarbageCollected<MutableCSSPropertyValueSet>(kUASheetMode);
  style->SetProperty(CSSPropertyID::kTextAlign, "right",
                     /* important */ false,
                     GetFrame().DomWindow()->GetSecureContextMode());
  MakeGarbageCollected<ApplyStyleCommand>(
      GetDocument(), MakeGarbageCollected<EditingStyle>(style),
      InputEvent::InputType::kFormatJustifyRight,
      ApplyStyleCommand::kForceBlockProperties)
      ->Apply();
  EXPECT_EQ(
      "<svg>"
      "<foreignObject>"
      "<div style=\"text-align: right;\">|1</div>"
      "</foreignObject>"
      "<foreignObject>"
      "<div style=\"text-align: right;\">2</div><b></b>"
      "</foreignObject>"
      "</svg>",
      GetSelectionTextFromBody());
}
}  // namespace blink