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010cde10c1
This patch creates editor API to get/set unmask-range of password field. Its design is similar to `setSelectionRange()` and `selectionStart`/ `selectionEnd` attributes. The unmasked range is automatically masked if `aTimeout` of `unmask()` is set to non-zero. Otherwise, unmasked range won't be masked automatically even after user or web apps modifies the editor, and inserting new character expands unmasking range. The following patch makes `TextEditRules` use these API to implement delayed masking of password. Note that editor has never supported dynamic `eEditorPasswordMask` change. E.g., if you have typed some characters into an editor and toggle the flag, the characters are not unmasked nor masked. Then, if you type new characters, only they are correctly masked or unmasked. This patch puts `MOZ_ASSERT()` to reject this feature completely on debug build for making the unmasking implementation simpler. Differential Revision: https://phabricator.services.mozilla.com/D38004 --HG-- extra : moz-landing-system : lando
129 lines
4.1 KiB
C++
129 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "DeleteNodeTransaction.h"
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#include "mozilla/EditorBase.h"
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#include "mozilla/SelectionState.h" // RangeUpdater
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#include "nsDebug.h"
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#include "nsError.h"
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#include "nsAString.h"
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namespace mozilla {
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// static
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already_AddRefed<DeleteNodeTransaction> DeleteNodeTransaction::MaybeCreate(
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EditorBase& aEditorBase, nsINode& aNodeToDelete) {
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RefPtr<DeleteNodeTransaction> transaction =
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new DeleteNodeTransaction(aEditorBase, aNodeToDelete);
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if (NS_WARN_IF(!transaction->CanDoIt())) {
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return nullptr;
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}
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return transaction.forget();
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}
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DeleteNodeTransaction::DeleteNodeTransaction(EditorBase& aEditorBase,
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nsINode& aNodeToDelete)
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: mEditorBase(&aEditorBase),
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mNodeToDelete(&aNodeToDelete),
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mParentNode(aNodeToDelete.GetParentNode()) {}
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DeleteNodeTransaction::~DeleteNodeTransaction() {}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(DeleteNodeTransaction, EditTransactionBase,
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mEditorBase, mNodeToDelete, mParentNode,
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mRefNode)
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NS_IMPL_ADDREF_INHERITED(DeleteNodeTransaction, EditTransactionBase)
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NS_IMPL_RELEASE_INHERITED(DeleteNodeTransaction, EditTransactionBase)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DeleteNodeTransaction)
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NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
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bool DeleteNodeTransaction::CanDoIt() const {
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if (NS_WARN_IF(!mNodeToDelete) || NS_WARN_IF(!mEditorBase) || !mParentNode ||
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!mEditorBase->IsModifiableNode(*mParentNode)) {
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return false;
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}
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return true;
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}
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NS_IMETHODIMP
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DeleteNodeTransaction::DoTransaction() {
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if (NS_WARN_IF(!CanDoIt())) {
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return NS_OK;
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}
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if (!mEditorBase->AsHTMLEditor() && mNodeToDelete->IsText()) {
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uint32_t length = mNodeToDelete->AsText()->TextLength();
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if (length > 0) {
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mEditorBase->AsTextEditor()->WillDeleteText(length, 0, length);
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}
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}
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// Remember which child mNodeToDelete was (by remembering which child was
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// next). Note that mRefNode can be nullptr.
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mRefNode = mNodeToDelete->GetNextSibling();
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// give range updater a chance. SelAdjDeleteNode() needs to be called
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// *before* we do the action, unlike some of the other RangeItem update
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// methods.
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mEditorBase->RangeUpdaterRef().SelAdjDeleteNode(mNodeToDelete);
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ErrorResult error;
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mParentNode->RemoveChild(*mNodeToDelete, error);
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return error.StealNSResult();
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}
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MOZ_CAN_RUN_SCRIPT_BOUNDARY
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NS_IMETHODIMP
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DeleteNodeTransaction::UndoTransaction() {
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if (NS_WARN_IF(!CanDoIt())) {
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// This is a legal state, the transaction is a no-op.
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return NS_OK;
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}
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ErrorResult error;
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RefPtr<EditorBase> editorBase = mEditorBase;
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nsCOMPtr<nsINode> parent = mParentNode;
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nsCOMPtr<nsINode> nodeToDelete = mNodeToDelete;
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nsCOMPtr<nsIContent> refNode = mRefNode;
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parent->InsertBefore(*nodeToDelete, refNode, error);
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if (NS_WARN_IF(error.Failed())) {
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return error.StealNSResult();
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}
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if (!editorBase->AsHTMLEditor() && nodeToDelete->IsText()) {
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uint32_t length = nodeToDelete->AsText()->TextLength();
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if (length > 0) {
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error = MOZ_KnownLive(editorBase->AsTextEditor())
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->DidInsertText(length, 0, length);
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if (NS_WARN_IF(error.Failed())) {
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return error.StealNSResult();
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}
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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DeleteNodeTransaction::RedoTransaction() {
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if (NS_WARN_IF(!CanDoIt())) {
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// This is a legal state, the transaction is a no-op.
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return NS_OK;
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}
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if (!mEditorBase->AsHTMLEditor() && mNodeToDelete->IsText()) {
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uint32_t length = mNodeToDelete->AsText()->TextLength();
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if (length > 0) {
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mEditorBase->AsTextEditor()->WillDeleteText(length, 0, length);
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}
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}
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mEditorBase->RangeUpdaterRef().SelAdjDeleteNode(mNodeToDelete);
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ErrorResult error;
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mParentNode->RemoveChild(*mNodeToDelete, error);
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return error.StealNSResult();
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}
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} // namespace mozilla
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