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-rw-r--r--layout/forms/nsFileControlFrame.cpp506
1 files changed, 506 insertions, 0 deletions
diff --git a/layout/forms/nsFileControlFrame.cpp b/layout/forms/nsFileControlFrame.cpp
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index 000000000..659371615
--- /dev/null
+++ b/layout/forms/nsFileControlFrame.cpp
@@ -0,0 +1,506 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsIDocument.h"
+#include "mozilla/dom/NodeInfo.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/DataTransfer.h"
+#include "mozilla/dom/HTMLButtonElement.h"
+#include "mozilla/dom/HTMLInputElement.h"
+#include "mozilla/Preferences.h"
+#include "nsNodeInfoManager.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsContentUtils.h"
+#include "mozilla/EventStates.h"
+#include "mozilla/dom/DOMStringList.h"
+#include "mozilla/dom/Directory.h"
+#include "mozilla/dom/FileList.h"
+#include "nsIDOMDragEvent.h"
+#include "nsIDOMFileList.h"
+#include "nsContentList.h"
+#include "nsIDOMMutationEvent.h"
+#include "nsTextNode.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+nsIFrame*
+NS_NewFileControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+ return new (aPresShell) nsFileControlFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsFileControlFrame)
+
+nsFileControlFrame::nsFileControlFrame(nsStyleContext* aContext)
+ : nsBlockFrame(aContext)
+{
+ AddStateBits(NS_BLOCK_FLOAT_MGR);
+}
+
+
+void
+nsFileControlFrame::Init(nsIContent* aContent,
+ nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow)
+{
+ nsBlockFrame::Init(aContent, aParent, aPrevInFlow);
+
+ mMouseListener = new DnDListener(this);
+}
+
+void
+nsFileControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
+{
+ ENSURE_TRUE(mContent);
+
+ // Remove the events.
+ if (mContent) {
+ mContent->RemoveSystemEventListener(NS_LITERAL_STRING("drop"),
+ mMouseListener, false);
+ mContent->RemoveSystemEventListener(NS_LITERAL_STRING("dragover"),
+ mMouseListener, false);
+ }
+
+ nsContentUtils::DestroyAnonymousContent(&mTextContent);
+ nsContentUtils::DestroyAnonymousContent(&mBrowseFilesOrDirs);
+
+ mMouseListener->ForgetFrame();
+ nsBlockFrame::DestroyFrom(aDestructRoot);
+}
+
+static already_AddRefed<Element>
+MakeAnonButton(nsIDocument* aDoc, const char* labelKey,
+ HTMLInputElement* aInputElement,
+ const nsAString& aAccessKey)
+{
+ RefPtr<Element> button = aDoc->CreateHTMLElement(nsGkAtoms::button);
+ // NOTE: SetIsNativeAnonymousRoot() has to be called before setting any
+ // attribute.
+ button->SetIsNativeAnonymousRoot();
+ button->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
+ NS_LITERAL_STRING("button"), false);
+
+ // Set the file picking button text depending on the current locale.
+ nsXPIDLString buttonTxt;
+ nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
+ labelKey, buttonTxt);
+
+ // 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<nsTextNode> textContent =
+ new nsTextNode(button->NodeInfo()->NodeInfoManager());
+
+ textContent->SetText(buttonTxt, false);
+
+ nsresult rv = button->AppendChildTo(textContent, false);
+ if (NS_FAILED(rv)) {
+ return nullptr;
+ }
+
+ // Make sure access key and tab order for the element actually redirect to the
+ // file picking button.
+ RefPtr<HTMLButtonElement> buttonElement =
+ HTMLButtonElement::FromContentOrNull(button);
+
+ if (!aAccessKey.IsEmpty()) {
+ buttonElement->SetAccessKey(aAccessKey);
+ }
+
+ // Both elements are given the same tab index so that the user can tab
+ // to the file control at the correct index, and then between the two
+ // buttons.
+ int32_t tabIndex;
+ aInputElement->GetTabIndex(&tabIndex);
+ buttonElement->SetTabIndex(tabIndex);
+
+ return button.forget();
+}
+
+nsresult
+nsFileControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
+{
+ nsCOMPtr<nsIDocument> doc = mContent->GetComposedDoc();
+
+ RefPtr<HTMLInputElement> fileContent = HTMLInputElement::FromContentOrNull(mContent);
+
+ // The access key is transferred to the "Choose files..." button only. In
+ // effect that access key allows access to the control via that button, then
+ // the user can tab between the two buttons.
+ nsAutoString accessKey;
+ fileContent->GetAccessKey(accessKey);
+
+ mBrowseFilesOrDirs = MakeAnonButton(doc, "Browse", fileContent, accessKey);
+ if (!mBrowseFilesOrDirs || !aElements.AppendElement(mBrowseFilesOrDirs)) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+
+ // Create and setup the text showing the selected files.
+ RefPtr<NodeInfo> nodeInfo;
+ nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::label, nullptr,
+ kNameSpaceID_XUL,
+ nsIDOMNode::ELEMENT_NODE);
+ NS_TrustedNewXULElement(getter_AddRefs(mTextContent), nodeInfo.forget());
+ // NOTE: SetIsNativeAnonymousRoot() has to be called before setting any
+ // attribute.
+ mTextContent->SetIsNativeAnonymousRoot();
+ mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::crop,
+ NS_LITERAL_STRING("center"), false);
+
+ // Update the displayed text to reflect the current element's value.
+ nsAutoString value;
+ HTMLInputElement::FromContent(mContent)->GetDisplayFileName(value);
+ UpdateDisplayedValue(value, false);
+
+ if (!aElements.AppendElement(mTextContent)) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+
+ // We should be able to interact with the element by doing drag and drop.
+ mContent->AddSystemEventListener(NS_LITERAL_STRING("drop"),
+ mMouseListener, false);
+ mContent->AddSystemEventListener(NS_LITERAL_STRING("dragover"),
+ 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(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, err);
+ if (err.Failed()) {
+ err.SuppressException();
+ return;
+ }
+
+ nsCOMPtr<nsIFile> file;
+ NS_ConvertUTF16toUTF8 path(fullpath);
+ nsresult rv = NS_NewNativeLocalFile(path, 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, 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(nsIDOMEvent* aEvent)
+{
+ NS_ASSERTION(mFrame, "We should have been unregistered");
+
+ bool defaultPrevented = false;
+ aEvent->GetDefaultPrevented(&defaultPrevented);
+ if (defaultPrevented) {
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
+ if (!dragEvent) {
+ return NS_OK;
+ }
+
+ nsCOMPtr<nsIDOMDataTransfer> dataTransfer;
+ dragEvent->GetDataTransfer(getter_AddRefs(dataTransfer));
+ if (!IsValidDropData(dataTransfer)) {
+ return NS_OK;
+ }
+
+
+ nsCOMPtr<nsIContent> content = mFrame->GetContent();
+ bool supportsMultiple = content && content->HasAttr(kNameSpaceID_None, nsGkAtoms::multiple);
+ if (!CanDropTheseFiles(dataTransfer, supportsMultiple)) {
+ dataTransfer->SetDropEffect(NS_LITERAL_STRING("none"));
+ 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();
+
+ NS_ASSERTION(content, "The frame has no content???");
+
+ HTMLInputElement* inputElement = HTMLInputElement::FromContent(content);
+ NS_ASSERTION(inputElement, "No input element for this file upload control frame!");
+
+ nsCOMPtr<nsIDOMFileList> fileList;
+ dataTransfer->GetFiles(getter_AddRefs(fileList));
+
+ RefPtr<BlobImpl> webkitDir;
+ nsresult rv =
+ GetBlobImplForWebkitDirectory(fileList, getter_AddRefs(webkitDir));
+ NS_ENSURE_SUCCESS(rv, NS_OK);
+
+ nsTArray<OwningFileOrDirectory> array;
+ if (webkitDir) {
+ AppendBlobImplAsDirectory(array, webkitDir, content);
+ inputElement->MozSetDndFilesAndDirectories(array);
+ } else {
+ bool blinkFileSystemEnabled =
+ Preferences::GetBool("dom.webkitBlink.filesystem.enabled", false);
+ 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(), content);
+ } else {
+ OwningFileOrDirectory* element = array.AppendElement();
+ element->SetAsFile() = file;
+ }
+ }
+ }
+ }
+ }
+
+ // 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);
+ if (blinkFileSystemEnabled) {
+ inputElement->UpdateEntries(array);
+ }
+ nsContentUtils::DispatchTrustedEvent(content->OwnerDoc(), content,
+ NS_LITERAL_STRING("input"), true,
+ false);
+ nsContentUtils::DispatchTrustedEvent(content->OwnerDoc(), content,
+ NS_LITERAL_STRING("change"), true,
+ false);
+ }
+ }
+
+ return NS_OK;
+}
+
+nsresult
+nsFileControlFrame::DnDListener::GetBlobImplForWebkitDirectory(nsIDOMFileList* aFileList,
+ BlobImpl** aBlobImpl)
+{
+ *aBlobImpl = nullptr;
+
+ HTMLInputElement* inputElement =
+ HTMLInputElement::FromContent(mFrame->GetContent());
+ bool webkitDirPicker =
+ Preferences::GetBool("dom.webkitBlink.dirPicker.enabled", false) &&
+ inputElement->HasAttr(kNameSpaceID_None, nsGkAtoms::webkitdirectory);
+ if (!webkitDirPicker) {
+ return NS_OK;
+ }
+
+ if (!aFileList) {
+ return NS_ERROR_FAILURE;
+ }
+
+ FileList* files = static_cast<FileList*>(aFileList);
+ // webkitdirectory doesn't care about the length of the file list but
+ // only about the first item on it.
+ uint32_t len = files->Length();
+ if (len) {
+ File* file = files->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(nsIDOMDataTransfer* aDOMDataTransfer)
+{
+ nsCOMPtr<DataTransfer> dataTransfer = do_QueryInterface(aDOMDataTransfer);
+ NS_ENSURE_TRUE(dataTransfer, false);
+
+ // We only support dropping files onto a file upload control
+ nsTArray<nsString> types;
+ dataTransfer->GetTypes(types, *nsContentUtils::GetSystemPrincipal());
+
+ return types.Contains(NS_LITERAL_STRING("Files"));
+}
+
+bool
+nsFileControlFrame::DnDListener::CanDropTheseFiles(nsIDOMDataTransfer* aDOMDataTransfer,
+ bool aSupportsMultiple)
+{
+ nsCOMPtr<DataTransfer> dataTransfer = do_QueryInterface(aDOMDataTransfer);
+ NS_ENSURE_TRUE(dataTransfer, false);
+
+ nsCOMPtr<nsIDOMFileList> fileList;
+ dataTransfer->GetFiles(getter_AddRefs(fileList));
+
+ 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) {
+ fileList->GetLength(&listLength);
+ }
+ return listLength <= 1 || aSupportsMultiple;
+}
+
+nscoord
+nsFileControlFrame::GetMinISize(nsRenderingContext *aRenderingContext)
+{
+ nscoord result;
+ DISPLAY_MIN_WIDTH(this, result);
+
+ // Our min width is our pref width
+ result = GetPrefISize(aRenderingContext);
+ return result;
+}
+
+void
+nsFileControlFrame::SyncDisabledState()
+{
+ EventStates eventStates = mContent->AsElement()->State();
+ if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
+ mBrowseFilesOrDirs->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled,
+ EmptyString(), true);
+ } else {
+ mBrowseFilesOrDirs->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, true);
+ }
+}
+
+nsresult
+nsFileControlFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType)
+{
+ if (aNameSpaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::tabindex) {
+ if (aModType == nsIDOMMutationEvent::REMOVAL) {
+ mBrowseFilesOrDirs->UnsetAttr(aNameSpaceID, aAttribute, true);
+ } else {
+ nsAutoString value;
+ mContent->GetAttr(aNameSpaceID, aAttribute, value);
+ mBrowseFilesOrDirs->SetAttr(aNameSpaceID, aAttribute, value, true);
+ }
+ }
+
+ return nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
+}
+
+void
+nsFileControlFrame::ContentStatesChanged(EventStates aStates)
+{
+ if (aStates.HasState(NS_EVENT_STATE_DISABLED)) {
+ nsContentUtils::AddScriptRunner(new SyncDisabledStateEvent(this));
+ }
+}
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult
+nsFileControlFrame::GetFrameName(nsAString& aResult) const
+{
+ return MakeFrameName(NS_LITERAL_STRING("FileControl"), aResult);
+}
+#endif
+
+void
+nsFileControlFrame::UpdateDisplayedValue(const nsAString& aValue, bool aNotify)
+{
+ mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::value, aValue, aNotify);
+}
+
+nsresult
+nsFileControlFrame::SetFormProperty(nsIAtom* aName,
+ const nsAString& aValue)
+{
+ if (nsGkAtoms::value == aName) {
+ UpdateDisplayedValue(aValue, true);
+ }
+ return NS_OK;
+}
+
+void
+nsFileControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists)
+{
+ BuildDisplayListForInline(aBuilder, aDirtyRect, aLists);
+}
+
+#ifdef ACCESSIBILITY
+a11y::AccType
+nsFileControlFrame::AccessibleType()
+{
+ return a11y::eHTMLFileInputType;
+}
+#endif
+
+////////////////////////////////////////////////////////////
+// Mouse listener implementation
+
+NS_IMPL_ISUPPORTS(nsFileControlFrame::MouseListener,
+ nsIDOMEventListener)