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/* 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 "mozilla/HTMLEditor.h"
#include "EditorEventListener.h"
#include "HTMLEditUtils.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/Element.h"
#include "nsAString.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsGenericHTMLElement.h"
#include "nsIContent.h"
#include "nsLiteralString.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nscore.h"
namespace mozilla {
NS_IMETHODIMP HTMLEditor::SetInlineTableEditingEnabled(bool aIsEnabled) {
EnableInlineTableEditor(aIsEnabled);
return NS_OK;
}
NS_IMETHODIMP HTMLEditor::GetInlineTableEditingEnabled(bool* aIsEnabled) {
*aIsEnabled = IsInlineTableEditorEnabled();
return NS_OK;
}
nsresult HTMLEditor::ShowInlineTableEditingUIInternal(Element& aCellElement) {
if (NS_WARN_IF(!HTMLEditUtils::IsTableCell(&aCellElement))) {
return NS_OK;
}
if (NS_WARN_IF(!IsDescendantOfEditorRoot(&aCellElement))) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(mInlineEditedCell)) {
return NS_ERROR_FAILURE;
}
mInlineEditedCell = &aCellElement;
// the resizers and the shadow will be anonymous children of the body
RefPtr<Element> rootElement = GetRoot();
if (NS_WARN_IF(!rootElement)) {
return NS_ERROR_FAILURE;
}
do {
// The buttons of inline table editor will be children of the <body>
// element. Creating the anonymous elements may cause calling
// HideInlineTableEditingUIInternal() via a mutation event listener.
// So, we should store new button to a local variable, then, check:
// - whether creating a button is already set to the member or not
// - whether already created buttons are changed to another set
// If creating the buttons are canceled, we hit the latter check.
// If buttons for another table are created during this, we hit the latter
// check too.
// If buttons are just created again for same element, we hit the former
// check.
ManualNACPtr addColumnBeforeButton = CreateAnonymousElement(
nsGkAtoms::a, *rootElement, u"mozTableAddColumnBefore"_ns, false);
if (NS_WARN_IF(!addColumnBeforeButton)) {
NS_WARNING(
"HTMLEditor::CreateAnonymousElement(nsGkAtoms::a, "
"mozTableAddColumnBefore) failed");
break; // Hide unnecessary buttons created above.
}
if (NS_WARN_IF(mAddColumnBeforeButton) ||
NS_WARN_IF(mInlineEditedCell != &aCellElement)) {
return NS_ERROR_FAILURE; // Don't hide another set of buttons.
}
mAddColumnBeforeButton = std::move(addColumnBeforeButton);
ManualNACPtr removeColumnButton = CreateAnonymousElement(
nsGkAtoms::a, *rootElement, u"mozTableRemoveColumn"_ns, false);
if (!removeColumnButton) {
NS_WARNING(
"HTMLEditor::CreateAnonymousElement(nsGkAtoms::a, "
"mozTableRemoveColumn) failed");
break;
}
if (NS_WARN_IF(mRemoveColumnButton) ||
NS_WARN_IF(mInlineEditedCell != &aCellElement)) {
return NS_ERROR_FAILURE;
}
mRemoveColumnButton = std::move(removeColumnButton);
ManualNACPtr addColumnAfterButton = CreateAnonymousElement(
nsGkAtoms::a, *rootElement, u"mozTableAddColumnAfter"_ns, false);
if (!addColumnAfterButton) {
NS_WARNING(
"HTMLEditor::CreateAnonymousElement(nsGkAtoms::a, "
"mozTableAddColumnAfter) failed");
break;
}
if (NS_WARN_IF(mAddColumnAfterButton) ||
NS_WARN_IF(mInlineEditedCell != &aCellElement)) {
return NS_ERROR_FAILURE;
}
mAddColumnAfterButton = std::move(addColumnAfterButton);
ManualNACPtr addRowBeforeButton = CreateAnonymousElement(
nsGkAtoms::a, *rootElement, u"mozTableAddRowBefore"_ns, false);
if (!addRowBeforeButton) {
NS_WARNING(
"HTMLEditor::CreateAnonymousElement(nsGkAtoms::a, "
"mozTableAddRowBefore) failed");
break;
}
if (NS_WARN_IF(mAddRowBeforeButton) ||
NS_WARN_IF(mInlineEditedCell != &aCellElement)) {
return NS_ERROR_FAILURE;
}
mAddRowBeforeButton = std::move(addRowBeforeButton);
ManualNACPtr removeRowButton = CreateAnonymousElement(
nsGkAtoms::a, *rootElement, u"mozTableRemoveRow"_ns, false);
if (!removeRowButton) {
NS_WARNING(
"HTMLEditor::CreateAnonymousElement(nsGkAtoms::a, "
"mozTableRemoveRow) failed");
break;
}
if (NS_WARN_IF(mRemoveRowButton) ||
NS_WARN_IF(mInlineEditedCell != &aCellElement)) {
return NS_ERROR_FAILURE;
}
mRemoveRowButton = std::move(removeRowButton);
ManualNACPtr addRowAfterButton = CreateAnonymousElement(
nsGkAtoms::a, *rootElement, u"mozTableAddRowAfter"_ns, false);
if (!addRowAfterButton) {
NS_WARNING(
"HTMLEditor::CreateAnonymousElement(nsGkAtoms::a, "
"mozTableAddRowAfter) failed");
break;
}
if (NS_WARN_IF(mAddRowAfterButton) ||
NS_WARN_IF(mInlineEditedCell != &aCellElement)) {
return NS_ERROR_FAILURE;
}
mAddRowAfterButton = std::move(addRowAfterButton);
AddMouseClickListener(mAddColumnBeforeButton);
AddMouseClickListener(mRemoveColumnButton);
AddMouseClickListener(mAddColumnAfterButton);
AddMouseClickListener(mAddRowBeforeButton);
AddMouseClickListener(mRemoveRowButton);
AddMouseClickListener(mAddRowAfterButton);
nsresult rv = RefreshInlineTableEditingUIInternal();
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"HTMLEditor::RefreshInlineTableEditingUIInternal() failed");
return rv;
} while (true);
HideInlineTableEditingUIInternal();
return NS_ERROR_FAILURE;
}
void HTMLEditor::HideInlineTableEditingUIInternal() {
mInlineEditedCell = nullptr;
RemoveMouseClickListener(mAddColumnBeforeButton);
RemoveMouseClickListener(mRemoveColumnButton);
RemoveMouseClickListener(mAddColumnAfterButton);
RemoveMouseClickListener(mAddRowBeforeButton);
RemoveMouseClickListener(mRemoveRowButton);
RemoveMouseClickListener(mAddRowAfterButton);
// get the presshell's document observer interface.
RefPtr<PresShell> presShell = GetPresShell();
// We allow the pres shell to be null; when it is, we presume there
// are no document observers to notify, but we still want to
// UnbindFromTree.
// Calling DeleteRefToAnonymousNode() may cause showing the UI again.
// Therefore, we should forget all anonymous contents first.
// Otherwise, we could leak the old content because of overwritten by
// ShowInlineTableEditingUIInternal().
ManualNACPtr addColumnBeforeButton(std::move(mAddColumnBeforeButton));
ManualNACPtr removeColumnButton(std::move(mRemoveColumnButton));
ManualNACPtr addColumnAfterButton(std::move(mAddColumnAfterButton));
ManualNACPtr addRowBeforeButton(std::move(mAddRowBeforeButton));
ManualNACPtr removeRowButton(std::move(mRemoveRowButton));
ManualNACPtr addRowAfterButton(std::move(mAddRowAfterButton));
DeleteRefToAnonymousNode(std::move(addColumnBeforeButton), presShell);
DeleteRefToAnonymousNode(std::move(removeColumnButton), presShell);
DeleteRefToAnonymousNode(std::move(addColumnAfterButton), presShell);
DeleteRefToAnonymousNode(std::move(addRowBeforeButton), presShell);
DeleteRefToAnonymousNode(std::move(removeRowButton), presShell);
DeleteRefToAnonymousNode(std::move(addRowAfterButton), presShell);
}
nsresult HTMLEditor::DoInlineTableEditingAction(const Element& aElement) {
nsAutoString anonclass;
aElement.GetAttr(kNameSpaceID_None, nsGkAtoms::_moz_anonclass, anonclass);
if (!StringBeginsWith(anonclass, u"mozTable"_ns)) {
return NS_OK;
}
if (NS_WARN_IF(!mInlineEditedCell)) {
return NS_ERROR_NOT_AVAILABLE;
}
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
RefPtr<Element> tableElement =
HTMLEditUtils::GetClosestAncestorTableElement(*mInlineEditedCell);
if (!tableElement) {
NS_WARNING("HTMLEditor::GetClosestAncestorTableElement() returned nullptr");
return NS_ERROR_FAILURE;
}
int32_t rowCount, colCount;
nsresult rv = GetTableSize(tableElement, &rowCount, &colCount);
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::GetTableSize() failed");
return EditorBase::ToGenericNSResult(rv);
}
bool hideUI = false;
bool hideResizersWithInlineTableUI = (mResizedObject == tableElement);
if (anonclass.EqualsLiteral("mozTableAddColumnBefore")) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eInsertTableColumn);
nsresult rv = editActionData.CanHandleAndMaybeDispatchBeforeInputEvent();
if (NS_FAILED(rv)) {
NS_WARNING_ASSERTION(
rv == NS_ERROR_EDITOR_ACTION_CANCELED,
"CanHandleAndMaybeDispatchBeforeInputEvent(), failed");
return EditorBase::ToGenericNSResult(rv);
}
DebugOnly<nsresult> rvIgnored = InsertTableColumnsWithTransaction(
1, InsertPosition::eBeforeSelectedCell);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"HTMLEditor::InsertTableColumnsWithTransaction(1, "
"InsertPosition::eBeforeSelectedCell) failed, but ignored");
} else if (anonclass.EqualsLiteral("mozTableAddColumnAfter")) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eInsertTableColumn);
nsresult rv = editActionData.CanHandleAndMaybeDispatchBeforeInputEvent();
if (NS_FAILED(rv)) {
NS_WARNING_ASSERTION(
rv == NS_ERROR_EDITOR_ACTION_CANCELED,
"CanHandleAndMaybeDispatchBeforeInputEvent(), failed");
return EditorBase::ToGenericNSResult(rv);
}
DebugOnly<nsresult> rvIgnored = InsertTableColumnsWithTransaction(
1, InsertPosition::eAfterSelectedCell);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"HTMLEditor::InsertTableColumnsWithTransaction(1, "
"InsertPosition::eAfterSelectedCell) failed, but ignored");
} else if (anonclass.EqualsLiteral("mozTableAddRowBefore")) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eInsertTableRowElement);
nsresult rv = editActionData.CanHandleAndMaybeDispatchBeforeInputEvent();
if (NS_FAILED(rv)) {
NS_WARNING_ASSERTION(
rv == NS_ERROR_EDITOR_ACTION_CANCELED,
"CanHandleAndMaybeDispatchBeforeInputEvent(), failed");
return EditorBase::ToGenericNSResult(rv);
}
DebugOnly<nsresult> rvIgnored =
InsertTableRowsWithTransaction(1, InsertPosition::eBeforeSelectedCell);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"HTMLEditor::InsertTableRowsWithTransaction(1, "
"InsertPosition::eBeforeSelectedCell) failed, but ignored");
} else if (anonclass.EqualsLiteral("mozTableAddRowAfter")) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eInsertTableRowElement);
nsresult rv = editActionData.CanHandleAndMaybeDispatchBeforeInputEvent();
if (NS_FAILED(rv)) {
NS_WARNING_ASSERTION(
rv == NS_ERROR_EDITOR_ACTION_CANCELED,
"CanHandleAndMaybeDispatchBeforeInputEvent(), failed");
return EditorBase::ToGenericNSResult(rv);
}
DebugOnly<nsresult> rvIgnored =
InsertTableRowsWithTransaction(1, InsertPosition::eAfterSelectedCell);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"HTMLEditor::InsertTableRowsWithTransaction(1, "
"InsertPosition::eAfterSelectedCell) failed, but ignored");
} else if (anonclass.EqualsLiteral("mozTableRemoveColumn")) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eRemoveTableColumn);
nsresult rv = editActionData.CanHandleAndMaybeDispatchBeforeInputEvent();
if (NS_FAILED(rv)) {
NS_WARNING_ASSERTION(
rv == NS_ERROR_EDITOR_ACTION_CANCELED,
"CanHandleAndMaybeDispatchBeforeInputEvent(), failed");
return EditorBase::ToGenericNSResult(rv);
}
DebugOnly<nsresult> rvIgnored =
DeleteSelectedTableColumnsWithTransaction(1);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"HTMLEditor::DeleteSelectedTableColumnsWithTransaction(1) failed, but "
"ignored");
hideUI = (colCount == 1);
} else if (anonclass.EqualsLiteral("mozTableRemoveRow")) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eRemoveTableRowElement);
nsresult rv = editActionData.CanHandleAndMaybeDispatchBeforeInputEvent();
if (NS_FAILED(rv)) {
NS_WARNING_ASSERTION(
rv == NS_ERROR_EDITOR_ACTION_CANCELED,
"CanHandleAndMaybeDispatchBeforeInputEvent(), failed");
return EditorBase::ToGenericNSResult(rv);
}
DebugOnly<nsresult> rvIgnored = DeleteSelectedTableRowsWithTransaction(1);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"HTMLEditor::DeleteSelectedTableRowsWithTransaction(1)"
" failed, but ignored");
hideUI = (rowCount == 1);
} else {
return NS_OK;
}
// InsertTableRowsWithTransaction() might causes reframe.
if (NS_WARN_IF(Destroyed())) {
return NS_OK;
}
if (hideUI) {
HideInlineTableEditingUIInternal();
if (hideResizersWithInlineTableUI) {
DebugOnly<nsresult> rvIgnored = HideResizersInternal();
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"HTMLEditor::HideResizersInternal() failed, but ignored");
}
}
return NS_OK;
}
void HTMLEditor::AddMouseClickListener(Element* aElement) {
if (NS_WARN_IF(!aElement)) {
return;
}
DebugOnly<nsresult> rvIgnored =
aElement->AddEventListener(u"click"_ns, mEventListener, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"EventTarget::AddEventListener(click) failed, but ignored");
}
void HTMLEditor::RemoveMouseClickListener(Element* aElement) {
if (NS_WARN_IF(!aElement)) {
return;
}
aElement->RemoveEventListener(u"click"_ns, mEventListener, true);
}
nsresult HTMLEditor::RefreshInlineTableEditingUIInternal() {
MOZ_ASSERT(IsEditActionDataAvailable());
if (!mInlineEditedCell) {
return NS_OK;
}
RefPtr<nsGenericHTMLElement> inlineEditingCellElement =
nsGenericHTMLElement::FromNode(mInlineEditedCell);
if (NS_WARN_IF(!inlineEditingCellElement)) {
return NS_ERROR_FAILURE;
}
int32_t cellX = 0, cellY = 0;
DebugOnly<nsresult> rvIgnored =
GetElementOrigin(*mInlineEditedCell, cellX, cellY);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"HTMLEditor::GetElementOrigin() failed, but ignored");
int32_t cellWidth = inlineEditingCellElement->OffsetWidth();
int32_t cellHeight = inlineEditingCellElement->OffsetHeight();
int32_t centerOfCellX = cellX + cellWidth / 2;
int32_t centerOfCellY = cellY + cellHeight / 2;
RefPtr<Element> tableElement =
HTMLEditUtils::GetClosestAncestorTableElement(*mInlineEditedCell);
if (!tableElement) {
NS_WARNING("HTMLEditor::GetClosestAncestorTableElement() returned nullptr");
return NS_ERROR_FAILURE;
}
int32_t rowCount = 0, colCount = 0;
nsresult rv = GetTableSize(tableElement, &rowCount, &colCount);
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::GetTableSize() failed");
return rv;
}
auto setInlineTableEditButtonPosition =
[this](ManualNACPtr& aButtonElement, int32_t aNewX, int32_t aNewY)
MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION -> nsresult {
RefPtr<nsStyledElement> buttonStyledElement =
nsStyledElement::FromNodeOrNull(aButtonElement.get());
if (!buttonStyledElement) {
return NS_OK;
}
nsresult rv = SetAnonymousElementPositionWithoutTransaction(
*buttonStyledElement, aNewX, aNewY);
if (NS_FAILED(rv)) {
NS_WARNING(
"HTMLEditor::SetAnonymousElementPositionWithoutTransaction() "
"failed");
return rv;
}
return NS_WARN_IF(buttonStyledElement != aButtonElement.get())
? NS_ERROR_FAILURE
: NS_OK;
};
// clang-format off
rv = setInlineTableEditButtonPosition(mAddColumnBeforeButton,
centerOfCellX - 10, cellY - 7);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to move button for add-column-before");
return rv;
}
rv = setInlineTableEditButtonPosition(mRemoveColumnButton,
centerOfCellX - 4, cellY - 7);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to move button for remove-column");
return rv;
}
rv = setInlineTableEditButtonPosition(mAddColumnAfterButton,
centerOfCellX + 6, cellY - 7);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to move button for add-column-after");
return rv;
}
rv = setInlineTableEditButtonPosition(mAddRowBeforeButton,
cellX - 7, centerOfCellY - 10);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to move button for add-row-before");
return rv;
}
rv = setInlineTableEditButtonPosition(mRemoveRowButton,
cellX - 7, centerOfCellY - 4);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to move button for remove-row");
return rv;
}
rv = setInlineTableEditButtonPosition(mAddRowAfterButton,
cellX - 7, centerOfCellY + 6);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to move button for add-row-after");
return rv;
}
// clang-format on
return NS_WARN_IF(Destroyed()) ? NS_ERROR_EDITOR_DESTROYED : NS_OK;
}
} // namespace mozilla