Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 422 insertions, 0 deletions

diff --git a/layout/forms/nsFileControlFrame.cpp b/layout/forms/nsFileControlFrame.cpp
new file mode 100644
index 0000000000..d24158d9dc
--- /dev/null
+++ b/layout/forms/nsFileControlFrame.cpp
@@ -0,0 +1,422 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsFileControlFrame.h"
+
+#include "nsGkAtoms.h"
+#include "nsCOMPtr.h"
+#include "mozilla/dom/BlobImpl.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/NodeInfo.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/DOMStringList.h"
+#include "mozilla/dom/DataTransfer.h"
+#include "mozilla/dom/Directory.h"
+#include "mozilla/dom/DragEvent.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/FileList.h"
+#include "mozilla/dom/HTMLButtonElement.h"
+#include "mozilla/dom/HTMLInputElement.h"
+#include "mozilla/dom/MutationEventBinding.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/TextEditor.h"
+#include "MiddleCroppingBlockFrame.h"
+#include "nsIFrame.h"
+#include "nsNodeInfoManager.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsContentUtils.h"
+#include "nsIFile.h"
+#include "nsLayoutUtils.h"
+#include "nsTextNode.h"
+#include "nsTextFrame.h"
+#include "gfxContext.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+nsIFrame* NS_NewFileControlFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
+  return new (aPresShell)
+      nsFileControlFrame(aStyle, aPresShell->GetPresContext());
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsFileControlFrame)
+
+nsFileControlFrame::nsFileControlFrame(ComputedStyle* aStyle,
+                                       nsPresContext* aPresContext)
+    : nsBlockFrame(aStyle, aPresContext, kClassID) {}
+
+void nsFileControlFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+                              nsIFrame* aPrevInFlow) {
+  nsBlockFrame::Init(aContent, aParent, aPrevInFlow);
+
+  mMouseListener = new DnDListener(this);
+}
+
+void nsFileControlFrame::Destroy(DestroyContext& aContext) {
+  NS_ENSURE_TRUE_VOID(mContent);
+
+  // Remove the events.
+  if (mContent) {
+    mContent->RemoveSystemEventListener(u"drop"_ns, mMouseListener, false);
+    mContent->RemoveSystemEventListener(u"dragover"_ns, mMouseListener, false);
+  }
+
+  aContext.AddAnonymousContent(mTextContent.forget());
+  aContext.AddAnonymousContent(mBrowseFilesOrDirs.forget());
+
+  mMouseListener->ForgetFrame();
+  nsBlockFrame::Destroy(aContext);
+}
+
+static already_AddRefed<Element> MakeAnonButton(
+    Document* aDoc, const char* labelKey, HTMLInputElement* aInputElement) {
+  RefPtr<Element> button = aDoc->CreateHTMLElement(nsGkAtoms::button);
+  // NOTE: SetIsNativeAnonymousRoot() has to be called before setting any
+  // attribute.
+  button->SetIsNativeAnonymousRoot();
+  button->SetPseudoElementType(PseudoStyleType::fileSelectorButton);
+
+  // Set the file picking button text depending on the current locale.
+  nsAutoString buttonTxt;
+  nsContentUtils::GetMaybeLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
+                                          labelKey, aDoc, buttonTxt);
+
+  auto* nim = aDoc->NodeInfoManager();
+  // Set the browse button text. It's a bit of a pain to do because we want to
+  // make sure we are not notifying.
+  RefPtr textContent = new (nim) nsTextNode(nim);
+  textContent->SetText(buttonTxt, false);
+
+  IgnoredErrorResult error;
+  button->AppendChildTo(textContent, false, error);
+  if (error.Failed()) {
+    return nullptr;
+  }
+
+  auto* buttonElement = HTMLButtonElement::FromNode(button);
+  // We allow tabbing over the input itself, not the button.
+  buttonElement->SetTabIndex(-1, IgnoreErrors());
+  return button.forget();
+}
+
+nsresult nsFileControlFrame::CreateAnonymousContent(
+    nsTArray<ContentInfo>& aElements) {
+  nsCOMPtr<Document> doc = mContent->GetComposedDoc();
+  RefPtr fileContent = HTMLInputElement::FromNode(mContent);
+
+  mBrowseFilesOrDirs = MakeAnonButton(doc, "Browse", fileContent);
+  if (!mBrowseFilesOrDirs) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  // XXX(Bug 1631371) Check if this should use a fallible operation as it
+  // pretended earlier, or change the return type to void.
+  aElements.AppendElement(mBrowseFilesOrDirs);
+
+  // Create and setup the text showing the selected files.
+  mTextContent = doc->CreateHTMLElement(nsGkAtoms::label);
+  // NOTE: SetIsNativeAnonymousRoot() has to be called before setting any
+  // attribute.
+  mTextContent->SetIsNativeAnonymousRoot();
+  RefPtr<nsTextNode> text =
+      new (doc->NodeInfoManager()) nsTextNode(doc->NodeInfoManager());
+  mTextContent->AppendChildTo(text, false, IgnoreErrors());
+
+  aElements.AppendElement(mTextContent);
+
+  // We should be able to interact with the element by doing drag and drop.
+  mContent->AddSystemEventListener(u"drop"_ns, mMouseListener, false);
+  mContent->AddSystemEventListener(u"dragover"_ns, mMouseListener, false);
+
+  SyncDisabledState();
+
+  return NS_OK;
+}
+
+void nsFileControlFrame::AppendAnonymousContentTo(
+    nsTArray<nsIContent*>& aElements, uint32_t aFilter) {
+  if (mBrowseFilesOrDirs) {
+    aElements.AppendElement(mBrowseFilesOrDirs);
+  }
+
+  if (mTextContent) {
+    aElements.AppendElement(mTextContent);
+  }
+}
+
+NS_QUERYFRAME_HEAD(nsFileControlFrame)
+  NS_QUERYFRAME_ENTRY(nsFileControlFrame)
+  NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
+  NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
+NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
+
+void nsFileControlFrame::SetFocus(bool aOn, bool aRepaint) {}
+
+static void AppendBlobImplAsDirectory(nsTArray<OwningFileOrDirectory>& aArray,
+                                      BlobImpl* aBlobImpl,
+                                      nsIContent* aContent) {
+  MOZ_ASSERT(aBlobImpl);
+  MOZ_ASSERT(aBlobImpl->IsDirectory());
+
+  nsAutoString fullpath;
+  ErrorResult err;
+  aBlobImpl->GetMozFullPath(fullpath, SystemCallerGuarantee(), err);
+  if (err.Failed()) {
+    err.SuppressException();
+    return;
+  }
+
+  nsCOMPtr<nsIFile> file;
+  nsresult rv = NS_NewLocalFile(fullpath, true, getter_AddRefs(file));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return;
+  }
+
+  nsPIDOMWindowInner* inner = aContent->OwnerDoc()->GetInnerWindow();
+  if (!inner || !inner->IsCurrentInnerWindow()) {
+    return;
+  }
+
+  RefPtr<Directory> directory = Directory::Create(inner->AsGlobal(), file);
+  MOZ_ASSERT(directory);
+
+  OwningFileOrDirectory* element = aArray.AppendElement();
+  element->SetAsDirectory() = directory;
+}
+
+/**
+ * This is called when we receive a drop or a dragover.
+ */
+NS_IMETHODIMP
+nsFileControlFrame::DnDListener::HandleEvent(Event* aEvent) {
+  NS_ASSERTION(mFrame, "We should have been unregistered");
+
+  if (aEvent->DefaultPrevented()) {
+    return NS_OK;
+  }
+
+  DragEvent* dragEvent = aEvent->AsDragEvent();
+  if (!dragEvent) {
+    return NS_OK;
+  }
+
+  RefPtr<DataTransfer> dataTransfer = dragEvent->GetDataTransfer();
+  if (!IsValidDropData(dataTransfer)) {
+    return NS_OK;
+  }
+
+  RefPtr<HTMLInputElement> inputElement =
+      HTMLInputElement::FromNode(mFrame->GetContent());
+  bool supportsMultiple = inputElement->HasAttr(nsGkAtoms::multiple);
+  if (!CanDropTheseFiles(dataTransfer, supportsMultiple)) {
+    dataTransfer->SetDropEffect(u"none"_ns);
+    aEvent->StopPropagation();
+    return NS_OK;
+  }
+
+  nsAutoString eventType;
+  aEvent->GetType(eventType);
+  if (eventType.EqualsLiteral("dragover")) {
+    // Prevent default if we can accept this drag data
+    aEvent->PreventDefault();
+    return NS_OK;
+  }
+
+  if (eventType.EqualsLiteral("drop")) {
+    aEvent->StopPropagation();
+    aEvent->PreventDefault();
+
+    RefPtr<FileList> fileList =
+        dataTransfer->GetFiles(*nsContentUtils::GetSystemPrincipal());
+
+    RefPtr<BlobImpl> webkitDir;
+    nsresult rv =
+        GetBlobImplForWebkitDirectory(fileList, getter_AddRefs(webkitDir));
+    NS_ENSURE_SUCCESS(rv, NS_OK);
+
+    nsTArray<OwningFileOrDirectory> array;
+    if (webkitDir) {
+      AppendBlobImplAsDirectory(array, webkitDir, inputElement);
+      inputElement->MozSetDndFilesAndDirectories(array);
+    } else {
+      bool blinkFileSystemEnabled =
+          StaticPrefs::dom_webkitBlink_filesystem_enabled();
+      if (blinkFileSystemEnabled) {
+        FileList* files = static_cast<FileList*>(fileList.get());
+        if (files) {
+          for (uint32_t i = 0; i < files->Length(); ++i) {
+            File* file = files->Item(i);
+            if (file) {
+              if (file->Impl() && file->Impl()->IsDirectory()) {
+                AppendBlobImplAsDirectory(array, file->Impl(), inputElement);
+              } else {
+                OwningFileOrDirectory* element = array.AppendElement();
+                element->SetAsFile() = file;
+              }
+            }
+          }
+        }
+      }
+
+      // Entries API.
+      if (blinkFileSystemEnabled) {
+        // This is rather ugly. Pass the directories as Files using SetFiles,
+        // but then if blink filesystem API is enabled, it wants
+        // FileOrDirectory array.
+        inputElement->SetFiles(fileList, true);
+        inputElement->UpdateEntries(array);
+      }
+      // Normal DnD
+      else {
+        inputElement->SetFiles(fileList, true);
+      }
+
+      RefPtr<TextEditor> textEditor;
+      DebugOnly<nsresult> rvIgnored =
+          nsContentUtils::DispatchInputEvent(inputElement);
+      NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
+                           "Failed to dispatch input event");
+      nsContentUtils::DispatchTrustedEvent(inputElement->OwnerDoc(),
+                                           inputElement, u"change"_ns,
+                                           CanBubble::eYes, Cancelable::eNo);
+    }
+  }
+
+  return NS_OK;
+}
+
+nsresult nsFileControlFrame::DnDListener::GetBlobImplForWebkitDirectory(
+    FileList* aFileList, BlobImpl** aBlobImpl) {
+  *aBlobImpl = nullptr;
+
+  HTMLInputElement* inputElement =
+      HTMLInputElement::FromNode(mFrame->GetContent());
+  bool webkitDirPicker = StaticPrefs::dom_webkitBlink_dirPicker_enabled() &&
+                         inputElement->HasAttr(nsGkAtoms::webkitdirectory);
+  if (!webkitDirPicker) {
+    return NS_OK;
+  }
+
+  if (!aFileList) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // webkitdirectory doesn't care about the length of the file list but
+  // only about the first item on it.
+  uint32_t len = aFileList->Length();
+  if (len) {
+    File* file = aFileList->Item(0);
+    if (file) {
+      BlobImpl* impl = file->Impl();
+      if (impl && impl->IsDirectory()) {
+        RefPtr<BlobImpl> retVal = impl;
+        retVal.swap(*aBlobImpl);
+        return NS_OK;
+      }
+    }
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+bool nsFileControlFrame::DnDListener::IsValidDropData(
+    DataTransfer* aDataTransfer) {
+  if (!aDataTransfer) {
+    return false;
+  }
+
+  // We only support dropping files onto a file upload control
+  return aDataTransfer->HasFile();
+}
+
+bool nsFileControlFrame::DnDListener::CanDropTheseFiles(
+    DataTransfer* aDataTransfer, bool aSupportsMultiple) {
+  RefPtr<FileList> fileList =
+      aDataTransfer->GetFiles(*nsContentUtils::GetSystemPrincipal());
+
+  RefPtr<BlobImpl> webkitDir;
+  nsresult rv =
+      GetBlobImplForWebkitDirectory(fileList, getter_AddRefs(webkitDir));
+  // Just check if either there isn't webkitdirectory attribute, or
+  // fileList has a directory which can be dropped to the element.
+  // No need to use webkitDir for anything here.
+  NS_ENSURE_SUCCESS(rv, false);
+
+  uint32_t listLength = 0;
+  if (fileList) {
+    listLength = fileList->Length();
+  }
+  return listLength <= 1 || aSupportsMultiple;
+}
+
+void nsFileControlFrame::SyncDisabledState() {
+  if (mContent->AsElement()->State().HasState(ElementState::DISABLED)) {
+    mBrowseFilesOrDirs->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, u""_ns,
+                                true);
+  } else {
+    mBrowseFilesOrDirs->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, true);
+  }
+}
+
+void nsFileControlFrame::ElementStateChanged(ElementState aStates) {
+  if (aStates.HasState(ElementState::DISABLED)) {
+    nsContentUtils::AddScriptRunner(new SyncDisabledStateEvent(this));
+  }
+}
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult nsFileControlFrame::GetFrameName(nsAString& aResult) const {
+  return MakeFrameName(u"FileControl"_ns, aResult);
+}
+#endif
+
+nsresult nsFileControlFrame::SetFormProperty(nsAtom* aName,
+                                             const nsAString& aValue) {
+  if (nsGkAtoms::value == aName) {
+    if (MiddleCroppingBlockFrame* f =
+            do_QueryFrame(mTextContent->GetPrimaryFrame())) {
+      f->UpdateDisplayedValueToUncroppedValue(true);
+    }
+  }
+  return NS_OK;
+}
+
+#ifdef ACCESSIBILITY
+a11y::AccType nsFileControlFrame::AccessibleType() {
+  return a11y::eHTMLFileInputType;
+}
+#endif
+
+NS_IMPL_ISUPPORTS(nsFileControlFrame::MouseListener, nsIDOMEventListener)
+
+class FileControlLabelFrame final : public MiddleCroppingBlockFrame {
+ public:
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS(FileControlLabelFrame)
+
+  FileControlLabelFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
+      : MiddleCroppingBlockFrame(aStyle, aPresContext, kClassID) {}
+
+  HTMLInputElement& FileInput() const {
+    return *HTMLInputElement::FromNode(mContent->GetParent());
+  }
+
+  void GetUncroppedValue(nsAString& aValue) override {
+    return FileInput().GetDisplayFileName(aValue);
+  }
+};
+
+NS_QUERYFRAME_HEAD(FileControlLabelFrame)
+  NS_QUERYFRAME_ENTRY(FileControlLabelFrame)
+NS_QUERYFRAME_TAIL_INHERITING(MiddleCroppingBlockFrame)
+NS_IMPL_FRAMEARENA_HELPERS(FileControlLabelFrame)
+
+nsIFrame* NS_NewFileControlLabelFrame(PresShell* aPresShell,
+                                      ComputedStyle* aStyle) {
+  return new (aPresShell)
+      FileControlLabelFrame(aStyle, aPresShell->GetPresContext());
+}