зеркало из https://github.com/mozilla/gecko-dev.git
561 строка
23 KiB
C++
561 строка
23 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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#ifndef HTMLEditRules_h
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#define HTMLEditRules_h
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#include "TypeInState.h"
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#include "mozilla/EditorDOMPoint.h" // for EditorDOMPoint
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#include "mozilla/SelectionState.h"
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#include "mozilla/TextEditRules.h"
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#include "nsCOMPtr.h"
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#include "nsIEditor.h"
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#include "nsIHTMLEditor.h"
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#include "nsISupportsImpl.h"
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#include "nsTArray.h"
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#include "nscore.h"
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class nsAtom;
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class nsIDOMCharacterData;
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class nsIDOMDocument;
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class nsIDOMElement;
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class nsIDOMNode;
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class nsIEditor;
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class nsINode;
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class nsRange;
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namespace mozilla {
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class EditActionResult;
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class HTMLEditor;
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class RulesInfo;
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class SplitNodeResult;
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class TextEditor;
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enum class EditAction : int32_t;
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namespace dom {
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class Element;
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class Selection;
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} // namespace dom
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struct StyleCache final : public PropItem
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{
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bool mPresent;
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StyleCache()
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: PropItem()
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, mPresent(false)
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{
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MOZ_COUNT_CTOR(StyleCache);
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}
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StyleCache(nsAtom* aTag,
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nsAtom* aAttr,
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const nsAString& aValue)
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: PropItem(aTag, aAttr, aValue)
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, mPresent(false)
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{
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MOZ_COUNT_CTOR(StyleCache);
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}
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StyleCache(nsAtom* aTag,
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nsAtom* aAttr)
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: PropItem(aTag, aAttr, EmptyString())
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, mPresent(false)
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{
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MOZ_COUNT_CTOR(StyleCache);
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}
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~StyleCache()
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{
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MOZ_COUNT_DTOR(StyleCache);
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}
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};
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#define SIZE_STYLE_TABLE 19
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class HTMLEditRules : public TextEditRules
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLEditRules, TextEditRules)
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HTMLEditRules();
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// TextEditRules methods
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virtual nsresult Init(TextEditor* aTextEditor) override;
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virtual nsresult DetachEditor() override;
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virtual nsresult BeforeEdit(EditAction aAction,
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nsIEditor::EDirection aDirection) override;
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virtual nsresult AfterEdit(EditAction aAction,
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nsIEditor::EDirection aDirection) override;
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virtual nsresult WillDoAction(Selection* aSelection,
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RulesInfo* aInfo,
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bool* aCancel,
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bool* aHandled) override;
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virtual nsresult DidDoAction(Selection* aSelection,
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RulesInfo* aInfo,
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nsresult aResult) override;
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virtual bool DocumentIsEmpty() override;
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virtual nsresult DocumentModified() override;
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nsresult GetListState(bool* aMixed, bool* aOL, bool* aUL, bool* aDL);
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nsresult GetListItemState(bool* aMixed, bool* aLI, bool* aDT, bool* aDD);
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nsresult GetIndentState(bool* aCanIndent, bool* aCanOutdent);
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nsresult GetAlignment(bool* aMixed, nsIHTMLEditor::EAlignment* aAlign);
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nsresult GetParagraphState(bool* aMixed, nsAString& outFormat);
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nsresult MakeSureElemStartsOrEndsOnCR(nsINode& aNode);
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void DidCreateNode(Element* aNewElement);
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void DidInsertNode(nsIContent& aNode);
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void WillDeleteNode(nsINode* aChild);
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void DidSplitNode(nsINode* aExistingRightNode,
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nsINode* aNewLeftNode);
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void WillJoinNodes(nsINode& aLeftNode, nsINode& aRightNode);
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void DidJoinNodes(nsINode& aLeftNode, nsINode& aRightNode);
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void DidInsertText(nsINode* aTextNode, int32_t aOffset,
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const nsAString& aString);
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void DidDeleteText(nsINode* aTextNode, int32_t aOffset, int32_t aLength);
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void WillDeleteSelection(Selection* aSelection);
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void DeleteNodeIfCollapsedText(nsINode& aNode);
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void StartToListenToEditActions() { mListenerEnabled = true; }
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void EndListeningToEditActions() { mListenerEnabled = false; }
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protected:
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virtual ~HTMLEditRules();
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enum RulesEndpoint
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{
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kStart,
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kEnd
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};
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void InitFields();
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void WillInsert(Selection& aSelection, bool* aCancel);
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nsresult WillInsertText(EditAction aAction,
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Selection* aSelection,
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bool* aCancel,
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bool* aHandled,
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const nsAString* inString,
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nsAString* outString,
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int32_t aMaxLength);
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nsresult WillLoadHTML(Selection* aSelection, bool* aCancel);
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nsresult WillInsertBreak(Selection& aSelection, bool* aCancel,
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bool* aHandled);
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/**
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* InsertBRElement() inserts a <br> element into aInsertToBreak.
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*
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* @param aSelection The selection.
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* @param aInsertToBreak The point where new <br> element will be
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* inserted before.
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*/
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nsresult InsertBRElement(Selection& aSelection,
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const EditorDOMPoint& aInsertToBreak);
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nsresult DidInsertBreak(Selection* aSelection, nsresult aResult);
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nsresult SplitMailCites(Selection* aSelection, bool* aHandled);
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nsresult WillDeleteSelection(Selection* aSelection,
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nsIEditor::EDirection aAction,
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nsIEditor::EStripWrappers aStripWrappers,
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bool* aCancel, bool* aHandled);
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nsresult DidDeleteSelection(Selection* aSelection,
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nsIEditor::EDirection aDir,
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nsresult aResult);
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nsresult InsertBRIfNeeded(Selection* aSelection);
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/**
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* CanContainParagraph() returns true if aElement can have a <p> element as
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* its child or its descendant.
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*/
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bool CanContainParagraph(Element& aElement) const;
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/**
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* Insert a normal <br> element or a moz-<br> element to aNode when
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* aNode is a block and it has no children.
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*
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* @param aNode Reference to a block parent.
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* @param aInsertMozBR true if this should insert a moz-<br> element.
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* Otherwise, i.e., this should insert a normal <br>
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* element, false.
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*/
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nsresult InsertBRIfNeededInternal(nsINode& aNode, bool aInsertMozBR);
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EditorDOMPoint GetGoodSelPointForNode(nsINode& aNode,
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nsIEditor::EDirection aAction);
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/**
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* TryToJoinBlocks() tries to join two block elements. The right element is
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* always joined to the left element. If the elements are the same type and
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* not nested within each other, JoinNodesSmart() is called (example, joining
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* two list items together into one). If the elements are not the same type,
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* or one is a descendant of the other, we instead destroy the right block
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* placing its children into leftblock. DTD containment rules are followed
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* throughout.
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*
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* @return Sets canceled to true if the operation should do
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* nothing anymore even if this doesn't join the blocks.
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* Sets handled to true if this actually handles the
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* request. Note that this may set it to true even if this
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* does not join the block. E.g., if the blocks shouldn't
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* be joined or it's impossible to join them but it's not
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* unexpected case, this returns true with this.
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*/
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EditActionResult TryToJoinBlocks(nsIContent& aLeftNode,
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nsIContent& aRightNode);
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/**
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* MoveBlock() moves the content from aRightBlock starting from aRightOffset
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* into aLeftBlock at aLeftOffset. Note that the "block" can be inline nodes
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* between <br>s, or between blocks, etc. DTD containment rules are followed
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* throughout.
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*
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* @return Sets handled to true if this actually joins the nodes.
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* canceled is always false.
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*/
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EditActionResult MoveBlock(Element& aLeftBlock, Element& aRightBlock,
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int32_t aLeftOffset, int32_t aRightOffset);
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/**
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* MoveNodeSmart() moves aNode to (aDestElement, aInOutDestOffset).
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* DTD containment rules are followed throughout.
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*
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* @param aOffset returns the point after inserted content.
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* @return Sets true to handled if this actually moves
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* the nodes.
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* canceled is always false.
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*/
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EditActionResult MoveNodeSmart(nsIContent& aNode, Element& aDestElement,
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int32_t* aInOutDestOffset);
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/**
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* MoveContents() moves the contents of aElement to (aDestElement,
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* aInOutDestOffset). DTD containment rules are followed throughout.
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*
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* @param aInOutDestOffset updated to point after inserted content.
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* @return Sets true to handled if this actually moves
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* the nodes.
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* canceled is always false.
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*/
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EditActionResult MoveContents(Element& aElement, Element& aDestElement,
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int32_t* aInOutDestOffset);
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nsresult DeleteNonTableElements(nsINode* aNode);
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nsresult WillMakeList(Selection* aSelection,
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const nsAString* aListType,
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bool aEntireList,
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const nsAString* aBulletType,
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bool* aCancel, bool* aHandled,
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const nsAString* aItemType = nullptr);
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nsresult WillRemoveList(Selection* aSelection, bool aOrdered, bool* aCancel,
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bool* aHandled);
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nsresult WillIndent(Selection* aSelection, bool* aCancel, bool* aHandled);
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nsresult WillCSSIndent(Selection* aSelection, bool* aCancel, bool* aHandled);
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nsresult WillHTMLIndent(Selection* aSelection, bool* aCancel,
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bool* aHandled);
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nsresult WillOutdent(Selection& aSelection, bool* aCancel, bool* aHandled);
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nsresult WillAlign(Selection& aSelection, const nsAString& aAlignType,
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bool* aCancel, bool* aHandled);
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nsresult WillAbsolutePosition(Selection& aSelection, bool* aCancel,
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bool* aHandled);
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nsresult WillRemoveAbsolutePosition(Selection* aSelection, bool* aCancel,
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bool* aHandled);
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nsresult WillRelativeChangeZIndex(Selection* aSelection, int32_t aChange,
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bool* aCancel, bool* aHandled);
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nsresult WillMakeDefListItem(Selection* aSelection,
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const nsAString* aBlockType, bool aEntireList,
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bool* aCancel, bool* aHandled);
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nsresult WillMakeBasicBlock(Selection& aSelection,
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const nsAString& aBlockType,
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bool* aCancel, bool* aHandled);
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nsresult MakeBasicBlock(Selection& aSelection, nsAtom& aBlockType);
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nsresult DidMakeBasicBlock(Selection* aSelection, RulesInfo* aInfo,
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nsresult aResult);
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nsresult DidAbsolutePosition();
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nsresult AlignInnerBlocks(nsINode& aNode, const nsAString* alignType);
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nsresult AlignBlockContents(nsIDOMNode* aNode, const nsAString* alignType);
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nsresult AppendInnerFormatNodes(nsTArray<OwningNonNull<nsINode>>& aArray,
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nsINode* aNode);
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nsresult GetFormatString(nsINode* aNode, nsAString &outFormat);
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enum class Lists { no, yes };
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enum class Tables { no, yes };
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void GetInnerContent(nsINode& aNode,
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nsTArray<OwningNonNull<nsINode>>& aOutArrayOfNodes,
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int32_t* aIndex, Lists aLists = Lists::yes,
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Tables aTables = Tables::yes);
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Element* IsInListItem(nsINode* aNode);
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nsAtom& DefaultParagraphSeparator();
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nsresult ReturnInHeader(Selection& aSelection, Element& aHeader,
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nsINode& aNode, int32_t aOffset);
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/**
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* ReturnInParagraph() does the right thing for Enter key press or
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* 'insertParagraph' command in aParentDivOrP. aParentDivOrP will be
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* split at start of first selection range.
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*
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* @param aSelection The selection. aParentDivOrP will be split at
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* start of the first selection range.
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* @param aParentDivOrP The parent block. This must be <p> or <div>
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* element.
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* @return Returns with NS_OK if this doesn't meat any
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* unexpected situation. If this method tries to
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* split the paragraph, marked as handled.
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*/
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EditActionResult ReturnInParagraph(Selection& aSelection,
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Element& aParentDivOrP);
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/**
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* SplitParagraph() splits the parent block, aPara, at aSelNode - aOffset.
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*
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* @param aSelection The selection.
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* @param aParentDivOrP The parent block to be split. This must be <p>
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* or <div> element.
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* @param aStartOfRightNode The point to be start of right node after
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* split. This must be descendant of
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* aParentDivOrP.
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* @param aNextBRNode Next <br> node if there is. Otherwise, nullptr.
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* If this is not nullptr, the <br> node may be
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* removed.
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*/
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nsresult SplitParagraph(Selection& aSelection,
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Element& aParentDivOrP,
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const EditorRawDOMPoint& aStartOfRightNode,
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nsIContent* aBRNode);
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nsresult ReturnInListItem(Selection& aSelection, Element& aHeader,
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nsINode& aNode, int32_t aOffset);
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nsresult AfterEditInner(EditAction action,
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nsIEditor::EDirection aDirection);
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nsresult RemovePartOfBlock(Element& aBlock, nsIContent& aStartChild,
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nsIContent& aEndChild);
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void SplitBlock(Element& aBlock,
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nsIContent& aStartChild,
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nsIContent& aEndChild,
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nsIContent** aOutLeftNode = nullptr,
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nsIContent** aOutRightNode = nullptr,
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nsIContent** aOutMiddleNode = nullptr);
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nsresult OutdentPartOfBlock(Element& aBlock,
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nsIContent& aStartChild,
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nsIContent& aEndChild,
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bool aIsBlockIndentedWithCSS,
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nsIContent** aOutLeftNode,
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nsIContent** aOutRightNode);
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already_AddRefed<Element> ConvertListType(Element* aList, nsAtom* aListType,
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nsAtom* aItemType);
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nsresult CreateStyleForInsertText(Selection& aSelection, nsIDocument& aDoc);
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/**
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* IsEmptyBlockElement() returns true if aElement is a block level element
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* and it doesn't have any visible content.
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*/
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enum class IgnoreSingleBR
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{
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eYes,
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eNo
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};
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bool IsEmptyBlockElement(Element& aElement,
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IgnoreSingleBR aIgnoreSingleBR);
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nsresult CheckForEmptyBlock(nsINode* aStartNode, Element* aBodyNode,
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Selection* aSelection,
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nsIEditor::EDirection aAction, bool* aHandled);
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enum class BRLocation { beforeBlock, blockEnd };
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Element* CheckForInvisibleBR(Element& aBlock, BRLocation aWhere,
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int32_t aOffset = 0);
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nsresult ExpandSelectionForDeletion(Selection& aSelection);
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bool IsFirstNode(nsIDOMNode* aNode);
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bool IsLastNode(nsIDOMNode* aNode);
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nsresult NormalizeSelection(Selection* aSelection);
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EditorDOMPoint GetPromotedPoint(RulesEndpoint aWhere, nsINode& aNode,
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int32_t aOffset, EditAction actionID);
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void GetPromotedRanges(Selection& aSelection,
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nsTArray<RefPtr<nsRange>>& outArrayOfRanges,
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EditAction inOperationType);
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void PromoteRange(nsRange& aRange, EditAction inOperationType);
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enum class TouchContent { no, yes };
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nsresult GetNodesForOperation(
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nsTArray<RefPtr<nsRange>>& aArrayOfRanges,
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nsTArray<OwningNonNull<nsINode>>& aOutArrayOfNodes,
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EditAction aOperationType,
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TouchContent aTouchContent = TouchContent::yes);
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void GetChildNodesForOperation(
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nsINode& aNode,
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nsTArray<OwningNonNull<nsINode>>& outArrayOfNodes);
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nsresult GetNodesFromPoint(const EditorDOMPoint& aPoint,
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EditAction aOperation,
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nsTArray<OwningNonNull<nsINode>>& outArrayOfNodes,
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TouchContent aTouchContent);
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nsresult GetNodesFromSelection(
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Selection& aSelection,
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EditAction aOperation,
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nsTArray<OwningNonNull<nsINode>>& outArrayOfNodes,
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TouchContent aTouchContent = TouchContent::yes);
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enum class EntireList { no, yes };
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nsresult GetListActionNodes(
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nsTArray<OwningNonNull<nsINode>>& aOutArrayOfNodes,
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EntireList aEntireList,
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TouchContent aTouchContent = TouchContent::yes);
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void GetDefinitionListItemTypes(Element* aElement, bool* aDT, bool* aDD);
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nsresult GetParagraphFormatNodes(
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nsTArray<OwningNonNull<nsINode>>& outArrayOfNodes,
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TouchContent aTouchContent = TouchContent::yes);
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void LookInsideDivBQandList(nsTArray<OwningNonNull<nsINode>>& aNodeArray);
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nsresult BustUpInlinesAtRangeEndpoints(RangeItem& inRange);
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nsresult BustUpInlinesAtBRs(
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nsIContent& aNode,
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nsTArray<OwningNonNull<nsINode>>& aOutArrayOfNodes);
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/**
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* GetHiestInlineParent() returns the highest inline node parent between
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* aNode and the editing host. Even if the editing host is an inline
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* element, this method never returns the editing host as the result.
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*/
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nsIContent* GetHighestInlineParent(nsINode& aNode);
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void MakeTransitionList(nsTArray<OwningNonNull<nsINode>>& aNodeArray,
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nsTArray<bool>& aTransitionArray);
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nsresult RemoveBlockStyle(nsTArray<OwningNonNull<nsINode>>& aNodeArray);
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nsresult ApplyBlockStyle(nsTArray<OwningNonNull<nsINode>>& aNodeArray,
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nsAtom& aBlockTag);
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nsresult MakeBlockquote(nsTArray<OwningNonNull<nsINode>>& aNodeArray);
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/**
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* MaybeSplitAncestorsForInsert() does nothing if container of
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* aStartOfDeepestRightNode can have an element whose tag name is aTag.
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* Otherwise, looks for an ancestor node which is or is in active editing
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* host and can have an element whose name is aTag. If there is such
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* ancestor, its descendants are split.
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*
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* Note that this may create empty elements while splitting ancestors.
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*
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* @param aTag The name of element to be inserted
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* after calling this method.
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* @param aStartOfDeepestRightNode The start point of deepest right node.
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* This point must be descendant of
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* active editing host.
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* @return When succeeded, SplitPoint() returns
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* the point to insert the element.
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*/
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SplitNodeResult MaybeSplitAncestorsForInsert(
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nsAtom& aTag,
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const EditorRawDOMPoint& aStartOfDeepestRightNode);
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nsresult AddTerminatingBR(nsIDOMNode *aBlock);
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EditorDOMPoint JoinNodesSmart(nsIContent& aNodeLeft,
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nsIContent& aNodeRight);
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Element* GetTopEnclosingMailCite(nsINode& aNode);
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nsresult PopListItem(nsIContent& aListItem, bool* aOutOfList = nullptr);
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nsresult RemoveListStructure(Element& aList);
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nsresult CacheInlineStyles(nsINode* aNode);
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nsresult ReapplyCachedStyles();
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void ClearCachedStyles();
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void AdjustSpecialBreaks();
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nsresult AdjustWhitespace(Selection* aSelection);
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nsresult PinSelectionToNewBlock(Selection* aSelection);
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void CheckInterlinePosition(Selection& aSelection);
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nsresult AdjustSelection(Selection* aSelection,
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nsIEditor::EDirection aAction);
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/**
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* FindNearEditableNode() tries to find an editable node near aPoint.
|
|
*
|
|
* @param aPoint The DOM point where to start to search from.
|
|
* @param aDirection If nsIEditor::ePrevious is set, this searches an
|
|
* editable node from next nodes. Otherwise, from
|
|
* previous nodes.
|
|
* @return If found, returns non-nullptr. Otherwise, nullptr.
|
|
* Note that if found node is in different table element,
|
|
* this returns nullptr.
|
|
* And also if aDirection is not nsIEditor::ePrevious,
|
|
* the result may be the node pointed by aPoint.
|
|
*/
|
|
nsIContent* FindNearEditableNode(const EditorRawDOMPoint& aPoint,
|
|
nsIEditor::EDirection aDirection);
|
|
/**
|
|
* Returns true if aNode1 or aNode2 or both is the descendant of some type of
|
|
* table element, but their nearest table element ancestors differ. "Table
|
|
* element" here includes not just <table> but also <td>, <tbody>, <tr>, etc.
|
|
* The nodes count as being their own descendants for this purpose, so a
|
|
* table element is its own nearest table element ancestor.
|
|
*/
|
|
bool InDifferentTableElements(nsIDOMNode* aNode1, nsIDOMNode* aNode2);
|
|
bool InDifferentTableElements(nsINode* aNode1, nsINode* aNode2);
|
|
nsresult RemoveEmptyNodes();
|
|
nsresult SelectionEndpointInNode(nsINode* aNode, bool* aResult);
|
|
nsresult UpdateDocChangeRange(nsRange* aRange);
|
|
nsresult ConfirmSelectionInBody();
|
|
|
|
/**
|
|
* Insert normal <br> element into aNode when aNode is a block and it has
|
|
* no children.
|
|
*/
|
|
nsresult InsertBRIfNeeded(nsINode& aNode)
|
|
{
|
|
return InsertBRIfNeededInternal(aNode, false);
|
|
}
|
|
|
|
/**
|
|
* Insert moz-<br> element (<br type="_moz">) into aNode when aNode is a
|
|
* block and it has no children.
|
|
*/
|
|
nsresult InsertMozBRIfNeeded(nsINode& aNode)
|
|
{
|
|
return InsertBRIfNeededInternal(aNode, true);
|
|
}
|
|
|
|
bool IsEmptyInline(nsINode& aNode);
|
|
bool ListIsEmptyLine(nsTArray<OwningNonNull<nsINode>>& arrayOfNodes);
|
|
nsresult RemoveAlignment(nsINode& aNode, const nsAString& aAlignType,
|
|
bool aChildrenOnly);
|
|
nsresult MakeSureElemStartsOrEndsOnCR(nsINode& aNode, bool aStarts);
|
|
enum class ContentsOnly { no, yes };
|
|
nsresult AlignBlock(Element& aElement,
|
|
const nsAString& aAlignType, ContentsOnly aContentsOnly);
|
|
enum class Change { minus, plus };
|
|
nsresult ChangeIndentation(Element& aElement, Change aChange);
|
|
void DocumentModifiedWorker();
|
|
|
|
/**
|
|
* InitStyleCacheArray() initializes aStyleCache for usable with
|
|
* GetInlineStyles().
|
|
*/
|
|
void InitStyleCacheArray(StyleCache aStyleCache[SIZE_STYLE_TABLE]);
|
|
|
|
/**
|
|
* GetInlineStyles() retrieves the style of aNode and modifies each item of
|
|
* aStyleCache.
|
|
*/
|
|
nsresult GetInlineStyles(nsINode* aNode,
|
|
StyleCache aStyleCache[SIZE_STYLE_TABLE]);
|
|
|
|
protected:
|
|
HTMLEditor* mHTMLEditor;
|
|
RefPtr<nsRange> mDocChangeRange;
|
|
bool mListenerEnabled;
|
|
bool mReturnInEmptyLIKillsList;
|
|
bool mDidDeleteSelection;
|
|
bool mDidRangedDelete;
|
|
bool mRestoreContentEditableCount;
|
|
RefPtr<nsRange> mUtilRange;
|
|
// Need to remember an int across willJoin/didJoin...
|
|
uint32_t mJoinOffset;
|
|
nsCOMPtr<Element> mNewBlock;
|
|
RefPtr<RangeItem> mRangeItem;
|
|
|
|
// XXX In strict speaking, mCachedStyles isn't enough to cache inline styles
|
|
// because inline style can be specified with "style" attribute and/or
|
|
// CSS in <style> elements or CSS files. So, we need to look for better
|
|
// implementation about this.
|
|
StyleCache mCachedStyles[SIZE_STYLE_TABLE];
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // #ifndef HTMLEditRules_h
|
|
|