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gecko-dev/editor/libeditor/HTMLEditor.h

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/* -*- 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/. */
#ifndef mozilla_HTMLEditor_h
#define mozilla_HTMLEditor_h
#include "mozilla/Attributes.h"
#include "mozilla/ComposerCommandsUpdater.h"
#include "mozilla/CSSEditUtils.h"
#include "mozilla/ManualNAC.h"
#include "mozilla/StyleSheet.h"
#include "mozilla/TextEditor.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/File.h"
#include "nsAttrName.h"
#include "nsCOMPtr.h"
#include "nsICSSLoaderObserver.h"
#include "nsIDocumentObserver.h"
#include "nsIDOMEventListener.h"
#include "nsIEditorMailSupport.h"
#include "nsIEditorStyleSheets.h"
#include "nsIHTMLAbsPosEditor.h"
#include "nsIHTMLEditor.h"
#include "nsIHTMLInlineTableEditor.h"
#include "nsIHTMLObjectResizer.h"
#include "nsITableEditor.h"
#include "nsPoint.h"
#include "nsStubMutationObserver.h"
#include "nsTArray.h"
class nsDocumentFragment;
class nsHTMLDocument;
class nsITransferable;
class nsIClipboard;
class nsILinkHandler;
class nsTableWrapperFrame;
class nsRange;
namespace mozilla {
class AutoSelectionSetterAfterTableEdit;
class AutoSetTemporaryAncestorLimiter;
class EmptyEditableFunctor;
class ResizerSelectionListener;
enum class EditSubAction : int32_t;
struct PropItem;
template <class T>
class OwningNonNull;
namespace dom {
class Blob;
class DocumentFragment;
class Event;
class MouseEvent;
} // namespace dom
namespace widget {
struct IMEState;
} // namespace widget
enum class ParagraphSeparator { div, p, br };
/**
* The HTML editor implementation.<br>
* Use to edit HTML document represented as a DOM tree.
*/
class HTMLEditor final : public TextEditor,
public nsIHTMLEditor,
public nsIHTMLObjectResizer,
public nsIHTMLAbsPosEditor,
public nsITableEditor,
public nsIHTMLInlineTableEditor,
public nsIEditorStyleSheets,
public nsStubMutationObserver,
public nsIEditorMailSupport {
public:
/****************************************************************************
* NOTE: DO NOT MAKE YOUR NEW METHODS PUBLIC IF they are called by other
* classes under libeditor except EditorEventListener and
* HTMLEditorEventListener because each public method which may fire
* eEditorInput event will need to instantiate new stack class for
* managing input type value of eEditorInput and cache some objects
* for smarter handling. In other words, when you add new root
* method to edit the DOM tree, you can make your new method public.
****************************************************************************/
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLEditor, TextEditor)
// nsStubMutationObserver overrides
NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
// nsIHTMLEditor methods
NS_DECL_NSIHTMLEDITOR
// nsIHTMLObjectResizer methods (implemented in HTMLObjectResizer.cpp)
NS_DECL_NSIHTMLOBJECTRESIZER
// nsIHTMLAbsPosEditor methods (implemented in HTMLAbsPositionEditor.cpp)
NS_DECL_NSIHTMLABSPOSEDITOR
// nsIHTMLInlineTableEditor methods (implemented in HTMLInlineTableEditor.cpp)
NS_DECL_NSIHTMLINLINETABLEEDITOR
// nsIEditorStyleSheets methods
NS_DECL_NSIEDITORSTYLESHEETS
// nsIEditorMailSupport methods
NS_DECL_NSIEDITORMAILSUPPORT
// nsITableEditor methods
NS_DECL_NSITABLEEDITOR
// nsISelectionListener overrides
NS_DECL_NSISELECTIONLISTENER
HTMLEditor();
nsHTMLDocument* GetHTMLDocument() const;
virtual void PreDestroy(bool aDestroyingFrames) override;
bool GetReturnInParagraphCreatesNewParagraph();
// TextEditor overrides
MOZ_CAN_RUN_SCRIPT
virtual nsresult Init(Document& aDoc, Element* aRoot,
nsISelectionController* aSelCon, uint32_t aFlags,
const nsAString& aValue) override;
NS_IMETHOD BeginningOfDocument() override;
NS_IMETHOD SetFlags(uint32_t aFlags) override;
virtual bool CanPaste(int32_t aClipboardType) const override;
using EditorBase::CanPaste;
MOZ_CAN_RUN_SCRIPT
NS_IMETHOD PasteTransferable(nsITransferable* aTransferable) override;
NS_IMETHOD DeleteNode(nsINode* aNode) override;
NS_IMETHOD InsertLineBreak() override;
MOZ_CAN_RUN_SCRIPT
virtual nsresult HandleKeyPressEvent(
WidgetKeyboardEvent* aKeyboardEvent) override;
virtual nsIContent* GetFocusedContent() override;
virtual already_AddRefed<nsIContent> GetFocusedContentForIME() override;
virtual bool IsActiveInDOMWindow() override;
virtual dom::EventTarget* GetDOMEventTarget() override;
virtual Element* FindSelectionRoot(nsINode* aNode) const override;
virtual bool IsAcceptableInputEvent(WidgetGUIEvent* aGUIEvent) override;
virtual nsresult GetPreferredIMEState(widget::IMEState* aState) override;
/**
* PasteAsQuotationAsAction() pastes content in clipboard with newly created
* blockquote element. If the editor is in plaintext mode, will paste the
* content with appending ">" to start of each line.
*
* @param aClipboardType nsIClipboard::kGlobalClipboard or
* nsIClipboard::kSelectionClipboard.
* @param aDispatchPasteEvent true if this should dispatch ePaste event
* before pasting. Otherwise, false.
*/
MOZ_CAN_RUN_SCRIPT
virtual nsresult PasteAsQuotationAsAction(int32_t aClipboardType,
bool aDispatchPasteEvent) override;
/**
* Can we paste |aTransferable| or, if |aTransferable| is null, will a call
* to pasteTransferable later possibly succeed if given an instance of
* nsITransferable then? True if the doc is modifiable, and, if
* |aTransfeable| is non-null, we have pasteable data in |aTransfeable|.
*/
virtual bool CanPasteTransferable(nsITransferable* aTransferable) override;
/**
* InsertLineBreakAsAction() is called when user inputs a line break with
* Shift + Enter or something.
*/
virtual nsresult InsertLineBreakAsAction() override;
/**
* InsertParagraphSeparatorAsAction() is called when user tries to separate
* current paragraph with Enter key press in HTMLEditor or something.
*/
nsresult InsertParagraphSeparatorAsAction();
/**
* CreateElementWithDefaults() creates new element whose name is
* aTagName with some default attributes are set. Note that this is a
* public utility method. I.e., just creates element, not insert it
* into the DOM tree.
* NOTE: This is available for internal use too since this does not change
* the DOM tree nor undo transactions, and does not refer Selection,
* HTMLEditRules, etc.
*
* @param aTagName The new element's tag name. If the name is
* one of "href", "anchor" or "namedanchor",
* this creates an <a> element.
* @return Newly created element.
*/
MOZ_CAN_RUN_SCRIPT
already_AddRefed<Element> CreateElementWithDefaults(const nsAtom& aTagName);
/**
* Indent or outdent content around Selection.
*/
nsresult IndentAsAction();
nsresult OutdentAsAction();
/**
* event callback when a mouse button is pressed
* @param aX [IN] horizontal position of the pointer
* @param aY [IN] vertical position of the pointer
* @param aTarget [IN] the element triggering the event
* @param aMouseEvent [IN] the event
*/
nsresult OnMouseDown(int32_t aX, int32_t aY, Element* aTarget,
dom::Event* aMouseEvent);
/**
* event callback when a mouse button is released
* @param aX [IN] horizontal position of the pointer
* @param aY [IN] vertical position of the pointer
* @param aTarget [IN] the element triggering the event
*/
MOZ_CAN_RUN_SCRIPT
nsresult OnMouseUp(int32_t aX, int32_t aY, Element* aTarget);
/**
* event callback when the mouse pointer is moved
* @param aMouseEvent [IN] the event
*/
MOZ_CAN_RUN_SCRIPT nsresult OnMouseMove(dom::MouseEvent* aMouseEvent);
/**
* IsCSSEnabled() returns true if this editor treats styles with style
* attribute of HTML elements. Otherwise, if this editor treats all styles
* with "font style elements" like <b>, <i>, etc, and <blockquote> to indent,
* align attribute to align contents, returns false.
*/
bool IsCSSEnabled() const {
// TODO: removal of mCSSAware and use only the presence of mCSSEditUtils
return mCSSAware && mCSSEditUtils && mCSSEditUtils->IsCSSPrefChecked();
}
/**
* Enable/disable object resizers for <img> elements, <table> elements,
* absolute positioned elements (required absolute position editor enabled).
*/
void EnableObjectResizer(bool aEnable) {
if (mIsObjectResizingEnabled == aEnable) {
return;
}
AutoEditActionDataSetter editActionData(
*this, EditAction::eEnableOrDisableResizer);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return;
}
mIsObjectResizingEnabled = aEnable;
RefereshEditingUI();
}
bool IsObjectResizerEnabled() const { return mIsObjectResizingEnabled; }
/**
* Enable/disable inline table editor, e.g., adding new row or column,
* removing existing row or column.
*/
void EnableInlineTableEditor(bool aEnable) {
if (mIsInlineTableEditingEnabled == aEnable) {
return;
}
AutoEditActionDataSetter editActionData(
*this, EditAction::eEnableOrDisableInlineTableEditingUI);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return;
}
mIsInlineTableEditingEnabled = aEnable;
RefereshEditingUI();
}
bool IsInlineTableEditorEnabled() const {
return mIsInlineTableEditingEnabled;
}
/**
* Enable/disable absolute position editor, resizing absolute positioned
* elements (required object resizers enabled) or positioning them with
* dragging grabber.
*/
void EnableAbsolutePositionEditor(bool aEnable) {
if (mIsAbsolutelyPositioningEnabled == aEnable) {
return;
}
AutoEditActionDataSetter editActionData(
*this, EditAction::eEnableOrDisableAbsolutePositionEditor);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return;
}
mIsAbsolutelyPositioningEnabled = aEnable;
RefereshEditingUI();
}
bool IsAbsolutePositionEditorEnabled() const {
return mIsAbsolutelyPositioningEnabled;
}
// non-virtual methods of interface methods
/**
* returns the deepest absolutely positioned container of the selection
* if it exists or null.
*/
already_AddRefed<Element> GetAbsolutelyPositionedSelectionContainer();
Element* GetPositionedElement() const { return mAbsolutelyPositionedObject; }
/**
* extracts the selection from the normal flow of the document and
* positions it.
* @param aEnabled [IN] true to absolutely position the selection,
* false to put it back in the normal flow
*/
nsresult SetSelectionToAbsoluteOrStatic(bool aEnabled);
/**
* returns the absolute z-index of a positioned element. Never returns 'auto'
* @return the z-index of the element
* @param aElement [IN] the element.
*/
int32_t GetZIndex(Element& aElement);
/**
* adds aChange to the z-index of the currently positioned element.
* @param aChange [IN] relative change to apply to current z-index
*/
nsresult AddZIndex(int32_t aChange);
/**
* SetInlinePropertyAsAction() sets a property which changes inline style of
* text. E.g., bold, italic, super and sub.
* This automatically removes exclusive style, however, treats all changes
* as a transaction.
*/
MOZ_CAN_RUN_SCRIPT
nsresult SetInlinePropertyAsAction(nsAtom& aProperty, nsAtom* aAttribute,
const nsAString& aValue);
nsresult GetInlineProperty(nsAtom* aProperty, nsAtom* aAttribute,
const nsAString& aValue, bool* aFirst, bool* aAny,
bool* aAll);
nsresult GetInlinePropertyWithAttrValue(nsAtom* aProperty, nsAtom* aAttr,
const nsAString& aValue, bool* aFirst,
bool* aAny, bool* aAll,
nsAString& outValue);
/**
* RemoveInlinePropertyAsAction() removes a property which changes inline
* style of text. E.g., bold, italic, super and sub.
*
* @param aProperty Tag name whcih represents the inline style you want to
* remove. E.g., nsGkAtoms::strong, nsGkAtoms::b, etc.
* If nsGkAtoms::href, <a> element which has href
* attribute will be removed.
* If nsGkAtoms::name, <a> element which has non-empty
* name attribute will be removed.
* @param aAttribute If aProperty is nsGkAtoms::font, aAttribute should be
* nsGkAtoms::fase, nsGkAtoms::size, nsGkAtoms::color or
* nsGkAtoms::bgcolor. Otherwise, set nullptr.
* Must not use nsGkAtoms::_empty here.
*/
MOZ_CAN_RUN_SCRIPT
nsresult RemoveInlinePropertyAsAction(nsAtom& aProperty, nsAtom* aAttribute);
/**
* GetFontColorState() returns foreground color information in first
* range of Selection.
* If first range of Selection is collapsed and there is a cache of style for
* new text, aIsMixed is set to false and aColor is set to the cached color.
* If first range of Selection is collapsed and there is no cached color,
* this returns the color of the node, aIsMixed is set to false and aColor is
* set to the color.
* If first range of Selection is not collapsed, this collects colors of
* each node in the range. If there are two or more colors, aIsMixed is set
* to true and aColor is truncated. If only one color is set to all of the
* range, aIsMixed is set to false and aColor is set to the color.
* If there is no Selection ranges, aIsMixed is set to false and aColor is
* truncated.
*
* @param aIsMixed Must not be nullptr. This is set to true
* if there is two or more colors in first
* range of Selection.
* @param aColor Returns the color if only one color is set to
* all of first range in Selection. Otherwise,
* returns empty string.
* @return Returns error only when illegal cases, e.g.,
* Selection instance has gone, first range
* Selection is broken.
*/
nsresult GetFontColorState(bool* aIsMixed, nsAString& aColor);
/**
* SetComposerCommandsUpdater() sets or unsets mComposerCommandsUpdater.
* This will crash in debug build if the editor already has an instance
* but called with another instance.
*/
void SetComposerCommandsUpdater(
ComposerCommandsUpdater* aComposerCommandsUpdater) {
MOZ_ASSERT(!aComposerCommandsUpdater || !mComposerCommandsUpdater ||
aComposerCommandsUpdater == mComposerCommandsUpdater);
mComposerCommandsUpdater = aComposerCommandsUpdater;
}
ParagraphSeparator GetDefaultParagraphSeparator() const {
return mDefaultParagraphSeparator;
}
void SetDefaultParagraphSeparator(ParagraphSeparator aSep) {
mDefaultParagraphSeparator = aSep;
}
/**
* Modifies the table containing the selection according to the
* activation of an inline table editing UI element
* @param aUIAnonymousElement [IN] the inline table editing UI element
*/
MOZ_CAN_RUN_SCRIPT
nsresult DoInlineTableEditingAction(const Element& aUIAnonymousElement);
/**
* GetElementOrParentByTagName() looks for an element node whose name matches
* aTagName from aNode or anchor node of Selection to <body> element.
*
* @param aTagName The tag name which you want to look for.
* Must not be nsGkAtoms::_empty.
* If nsGkAtoms::list, the result may be <ul>, <ol> or
* <dl> element.
* If nsGkAtoms::td, the result may be <td> or <th>.
* If nsGkAtoms::href, the result may be <a> element
* which has "href" attribute with non-empty value.
* If nsGkAtoms::anchor, the result may be <a> which
* has "name" attribute with non-empty value.
* @param aNode If non-nullptr, this starts to look for the result
* from it. Otherwise, i.e., nullptr, starts from
* anchor node of Selection.
* @return If an element which matches aTagName, returns
* an Element. Otherwise, nullptr.
*/
Element* GetElementOrParentByTagName(const nsAtom& aTagName,
nsINode* aNode) const;
/**
* Get an active editor's editing host in DOM window. If this editor isn't
* active in the DOM window, this returns NULL.
*/
Element* GetActiveEditingHost() const;
/** Insert a string as quoted text
* (whose representation is dependant on the editor type),
* replacing the selected text (if any).
*
* @param aQuotedText The actual text to be quoted
* @parem aNodeInserted Return the node which was inserted.
*/
MOZ_CAN_RUN_SCRIPT // USED_BY_COMM_CENTRAL
nsresult
InsertAsQuotation(const nsAString& aQuotedText, nsINode** aNodeInserted);
/**
* Inserts a plaintext string at the current location,
* with special processing for lines beginning with ">",
* which will be treated as mail quotes and inserted
* as plaintext quoted blocks.
* If the selection is not collapsed, the selection is deleted
* and the insertion takes place at the resulting collapsed selection.
*
* @param aString the string to be inserted
*/
nsresult InsertTextWithQuotations(const nsAString& aStringToInsert);
protected: // May be called by friends.
/****************************************************************************
* Some classes like TextEditRules, HTMLEditRules, WSRunObject which are
* part of handling edit actions are allowed to call the following protected
* methods. However, those methods won't prepare caches of some objects
* which are necessary for them. So, if you want some following methods
* to do that for you, you need to create a wrapper method in public scope
* and call it.
****************************************************************************/
/**
* DeleteSelectionWithTransaction() removes selected content or content
* around caret with transactions.
*
* @param aDirection How much range should be removed.
* @param aStripWrappers Whether the parent blocks should be removed
* when they become empty.
*/
virtual nsresult DeleteSelectionWithTransaction(
EDirection aAction, EStripWrappers aStripWrappers) override;
/**
* DeleteNodeWithTransaction() removes aNode from the DOM tree if it's
* modifiable. Note that this is not an override of same method of
* EditorBase.
*
* @param aNode The node to be removed from the DOM tree.
*/
nsresult DeleteNodeWithTransaction(nsINode& aNode);
/**
* DeleteTextWithTransaction() removes text in the range from aCharData if
* it's modifiable. Note that this not an override of same method of
* EditorBase.
*
* @param aCharData The data node which should be modified.
* @param aOffset Start offset of removing text in aCharData.
* @param aLength Length of removing text.
*/
nsresult DeleteTextWithTransaction(dom::CharacterData& aTextNode,
uint32_t aOffset, uint32_t aLength);
/**
* InsertTextWithTransaction() inserts aStringToInsert at aPointToInsert.
*/
MOZ_CAN_RUN_SCRIPT
virtual nsresult InsertTextWithTransaction(
Document& aDocument, const nsAString& aStringToInsert,
const EditorRawDOMPoint& aPointToInsert,
EditorRawDOMPoint* aPointAfterInsertedString = nullptr) override;
/**
* CopyLastEditableChildStyles() clones inline container elements into
* aPreviousBlock to aNewBlock to keep using same style in it.
*
* @param aPreviousBlock The previous block element. All inline
* elements which are last sibling of each level
* are cloned to aNewBlock.
* @param aNewBlock New block container element.
* @param aNewBrElement If this method creates a new <br> element for
* placeholder, this is set to the new <br>
* element.
*/
MOZ_CAN_RUN_SCRIPT
nsresult CopyLastEditableChildStylesWithTransaction(
Element& aPreviousBlock, Element& aNewBlock,
RefPtr<Element>* aNewBrElement);
/**
* RemoveBlockContainerWithTransaction() removes aElement from the DOM tree
* but moves its all children to its parent node and if its parent needs <br>
* element to have at least one line-height, this inserts <br> element
* automatically.
*
* @param aElement Block element to be removed.
*/
MOZ_CAN_RUN_SCRIPT
nsresult RemoveBlockContainerWithTransaction(Element& aElement);
virtual Element* GetEditorRoot() const override;
using EditorBase::IsEditable;
MOZ_CAN_RUN_SCRIPT
virtual nsresult RemoveAttributeOrEquivalent(
Element* aElement, nsAtom* aAttribute,
bool aSuppressTransaction) override;
MOZ_CAN_RUN_SCRIPT
virtual nsresult SetAttributeOrEquivalent(Element* aElement,
nsAtom* aAttribute,
const nsAString& aValue,
bool aSuppressTransaction) override;
using EditorBase::RemoveAttributeOrEquivalent;
using EditorBase::SetAttributeOrEquivalent;
/**
* GetBlockNodeParent() returns parent or nearest ancestor of aNode if
* there is a block parent. If aAncestorLimiter is not nullptr,
* this stops looking for the result.
*/
static Element* GetBlockNodeParent(nsINode* aNode,
nsINode* aAncestorLimiter = nullptr);
/**
* GetBlock() returns aNode itself, or parent or nearest ancestor of aNode
* if there is a block parent. If aAncestorLimiter is not nullptr,
* this stops looking for the result.
*/
static Element* GetBlock(nsINode& aNode, nsINode* aAncestorLimiter = nullptr);
/**
* Returns container element of ranges in Selection. If Selection is
* collapsed, returns focus container node (or its parent element).
* If Selection selects only one element node, returns the element node.
* If Selection is only one range, returns common ancestor of the range.
* XXX If there are two or more Selection ranges, this returns parent node
* of start container of a range which starts with different node from
* start container of the first range.
*/
Element* GetSelectionContainerElement() const;
/**
* GetFirstSelectedTableCellElement() returns a <td> or <th> element if
* first range of Selection (i.e., result of Selection::GetRangeAt(0))
* selects a <td> element or <th> element. Even if Selection is in
* a cell element, this returns nullptr. And even if 2nd or later
* range of Selection selects a cell element, also returns nullptr.
* Note that when this looks for a cell element, this resets the internal
* index of ranges of Selection. When you call
* GetNextSelectedTableCellElement() after a call of this, it'll return 2nd
* selected cell if there is.
*
* @param aRv Returns error if there is no selection or
* first range of Selection is unexpected.
* @return A <td> or <th> element is selected by first
* range of Selection. Note that the range must
* be: startContaienr and endContainer are same
* <tr> element, startOffset + 1 equals endOffset.
*/
already_AddRefed<Element> GetFirstSelectedTableCellElement(
ErrorResult& aRv) const;
/**
* GetNextSelectedTableCellElement() is a stateful method to retrieve
* selected table cell elements which are selected by 2nd or later ranges
* of Selection. When you call GetFirstSelectedTableCellElement(), it
* resets internal counter of this method. Then, following calls of
* GetNextSelectedTableCellElement() scans the remaining ranges of Selection.
* If a range selects a <td> or <th> element, returns the cell element.
* If a range selects an element but neither <td> nor <th> element, this
* ignores the range. If a range is in a text node, returns null without
* throwing exception, but stops scanning the remaining ranges even you
* call this again.
* Note that this may cross <table> boundaries since this method just
* scans all ranges of Selection. Therefore, returning cells which
* belong to different <table> elements.
*
* @param aRv Returns error if Selection doesn't have
* range properly.
* @return A <td> or <th> element if one of remaining
* ranges selects a <td> or <th> element unless
* this does not meet a range in a text node.
*/
already_AddRefed<Element> GetNextSelectedTableCellElement(
ErrorResult& aRv) const;
/**
* DeleteTableCellContentsWithTransaction() removes any contents in cell
* elements. If two or more cell elements are selected, this removes
* all selected cells' contents. Otherwise, this removes contents of
* a cell which contains first selection range. This does not return
* error even if selection is not in cell element, just does nothing.
*/
MOZ_CAN_RUN_SCRIPT
nsresult DeleteTableCellContentsWithTransaction();
void IsNextCharInNodeWhitespace(nsIContent* aContent, int32_t aOffset,
bool* outIsSpace, bool* outIsNBSP,
nsIContent** outNode = nullptr,
int32_t* outOffset = 0);
void IsPrevCharInNodeWhitespace(nsIContent* aContent, int32_t aOffset,
bool* outIsSpace, bool* outIsNBSP,
nsIContent** outNode = nullptr,
int32_t* outOffset = 0);
/**
* @param aElement Must not be null.
*/
static bool NodeIsBlockStatic(const nsINode* aElement);
/**
* extracts an element from the normal flow of the document and
* positions it, and puts it back in the normal flow.
* @param aElement [IN] the element
* @param aEnabled [IN] true to absolutely position the element,
* false to put it back in the normal flow
*/
MOZ_CAN_RUN_SCRIPT
nsresult SetPositionToAbsoluteOrStatic(Element& aElement, bool aEnabled);
/**
* adds aChange to the z-index of an arbitrary element.
* @param aElement [IN] the element
* @param aChange [IN] relative change to apply to current z-index of
* the element
* @param aReturn [OUT] the new z-index of the element
*/
nsresult RelativeChangeElementZIndex(Element& aElement, int32_t aChange,
int32_t* aReturn);
virtual bool IsBlockNode(nsINode* aNode) override;
using EditorBase::IsBlockNode;
/**
* returns true if aParentTag can contain a child of type aChildTag.
*/
virtual bool TagCanContainTag(nsAtom& aParentTag,
nsAtom& aChildTag) const override;
/**
* Returns true if aNode is a container.
*/
virtual bool IsContainer(nsINode* aNode) override;
/**
* Join together any adjacent editable text nodes in the range.
*/
nsresult CollapseAdjacentTextNodes(nsRange* aRange);
/**
* IsInVisibleTextFrames() returns true if all text in aText is in visible
* text frames. Callers have to guarantee that there is no pending reflow.
*/
bool IsInVisibleTextFrames(dom::Text& aText);
/**
* IsVisibleTextNode() returns true if aText has visible text. If it has
* only whitespaces and they are collapsed, returns false.
*/
bool IsVisibleTextNode(Text& aText);
/**
* aNode must be a non-null text node.
* outIsEmptyNode must be non-null.
*/
nsresult IsEmptyNode(nsINode* aNode, bool* outIsEmptyBlock,
bool aMozBRDoesntCount = false,
bool aListOrCellNotEmpty = false,
bool aSafeToAskFrames = false);
nsresult IsEmptyNodeImpl(nsINode* aNode, bool* outIsEmptyBlock,
bool aMozBRDoesntCount, bool aListOrCellNotEmpty,
bool aSafeToAskFrames, bool* aSeenBR);
static bool HasAttributes(Element* aElement) {
MOZ_ASSERT(aElement);
uint32_t attrCount = aElement->GetAttrCount();
return attrCount > 1 ||
(1 == attrCount &&
!aElement->GetAttrNameAt(0)->Equals(nsGkAtoms::mozdirty));
}
/**
* Content-based query returns true if <aProperty aAttribute=aValue> effects
* aNode. If <aProperty aAttribute=aValue> contains aNode, but
* <aProperty aAttribute=SomeOtherValue> also contains aNode and the second is
* more deeply nested than the first, then the first does not effect aNode.
*
* @param aNode The target of the query
* @param aProperty The property that we are querying for
* @param aAttribute The attribute of aProperty, example: color in
* <FONT color="blue"> May be null.
* @param aValue The value of aAttribute, example: blue in
* <FONT color="blue"> May be null. Ignored if aAttribute
* is null.
* @param outValue [OUT] the value of the attribute, if aIsSet is true
* @return true if <aProperty aAttribute=aValue> effects
* aNode.
*
* The nsIContent variant returns aIsSet instead of using an out parameter.
*/
bool IsTextPropertySetByContent(nsINode* aNode, nsAtom* aProperty,
nsAtom* aAttribute, const nsAString* aValue,
nsAString* outValue = nullptr);
static dom::Element* GetLinkElement(nsINode* aNode);
/**
* Small utility routine to test if a break node is visible to user.
*/
bool IsVisibleBRElement(nsINode* aNode);
/**
* Helper routines for font size changing.
*/
enum class FontSize { incr, decr };
MOZ_CAN_RUN_SCRIPT
nsresult RelativeFontChangeOnTextNode(FontSize aDir, Text& aTextNode,
int32_t aStartOffset,
int32_t aEndOffset);
MOZ_CAN_RUN_SCRIPT
nsresult SetInlinePropertyOnNode(nsIContent& aNode, nsAtom& aProperty,
nsAtom* aAttribute, const nsAString& aValue);
nsresult SplitStyleAbovePoint(nsCOMPtr<nsINode>* aNode, int32_t* aOffset,
nsAtom* aProperty, nsAtom* aAttribute,
nsIContent** aOutLeftNode = nullptr,
nsIContent** aOutRightNode = nullptr);
nsIContent* GetPriorHTMLSibling(nsINode* aNode);
nsIContent* GetNextHTMLSibling(nsINode* aNode);
/**
* GetPreviousHTMLElementOrText*() methods are similar to
* EditorBase::GetPreviousElementOrText*() but this won't return nodes
* outside active editing host.
*/
nsIContent* GetPreviousHTMLElementOrText(nsINode& aNode) {
return GetPreviousHTMLElementOrTextInternal(aNode, false);
}
nsIContent* GetPreviousHTMLElementOrTextInBlock(nsINode& aNode) {
return GetPreviousHTMLElementOrTextInternal(aNode, true);
}
template <typename PT, typename CT>
nsIContent* GetPreviousHTMLElementOrText(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetPreviousHTMLElementOrTextInternal(aPoint, false);
}
template <typename PT, typename CT>
nsIContent* GetPreviousHTMLElementOrTextInBlock(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetPreviousHTMLElementOrTextInternal(aPoint, true);
}
/**
* GetPreviousHTMLElementOrTextInternal() methods are common implementation
* of above methods. Please don't use this method directly.
*/
nsIContent* GetPreviousHTMLElementOrTextInternal(nsINode& aNode,
bool aNoBlockCrossing);
template <typename PT, typename CT>
nsIContent* GetPreviousHTMLElementOrTextInternal(
const EditorDOMPointBase<PT, CT>& aPoint, bool aNoBlockCrossing);
/**
* GetPreviousEditableHTMLNode*() methods are similar to
* EditorBase::GetPreviousEditableNode() but this won't return nodes outside
* active editing host.
*/
nsIContent* GetPreviousEditableHTMLNode(nsINode& aNode) {
return GetPreviousEditableHTMLNodeInternal(aNode, false);
}
nsIContent* GetPreviousEditableHTMLNodeInBlock(nsINode& aNode) {
return GetPreviousEditableHTMLNodeInternal(aNode, true);
}
template <typename PT, typename CT>
nsIContent* GetPreviousEditableHTMLNode(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetPreviousEditableHTMLNodeInternal(aPoint, false);
}
template <typename PT, typename CT>
nsIContent* GetPreviousEditableHTMLNodeInBlock(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetPreviousEditableHTMLNodeInternal(aPoint, true);
}
/**
* GetPreviousEditableHTMLNodeInternal() methods are common implementation
* of above methods. Please don't use this method directly.
*/
nsIContent* GetPreviousEditableHTMLNodeInternal(nsINode& aNode,
bool aNoBlockCrossing);
template <typename PT, typename CT>
nsIContent* GetPreviousEditableHTMLNodeInternal(
const EditorDOMPointBase<PT, CT>& aPoint, bool aNoBlockCrossing);
/**
* GetNextHTMLElementOrText*() methods are similar to
* EditorBase::GetNextElementOrText*() but this won't return nodes outside
* active editing host.
*
* Note that same as EditorBase::GetTextEditableNode(), methods which take
* |const EditorRawDOMPoint&| start to search from the node pointed by it.
* On the other hand, methods which take |nsINode&| start to search from
* next node of aNode.
*/
nsIContent* GetNextHTMLElementOrText(nsINode& aNode) {
return GetNextHTMLElementOrTextInternal(aNode, false);
}
nsIContent* GetNextHTMLElementOrTextInBlock(nsINode& aNode) {
return GetNextHTMLElementOrTextInternal(aNode, true);
}
template <typename PT, typename CT>
nsIContent* GetNextHTMLElementOrText(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetNextHTMLElementOrTextInternal(aPoint, false);
}
template <typename PT, typename CT>
nsIContent* GetNextHTMLElementOrTextInBlock(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetNextHTMLElementOrTextInternal(aPoint, true);
}
/**
* GetNextHTMLNodeInternal() methods are common implementation
* of above methods. Please don't use this method directly.
*/
nsIContent* GetNextHTMLElementOrTextInternal(nsINode& aNode,
bool aNoBlockCrossing);
template <typename PT, typename CT>
nsIContent* GetNextHTMLElementOrTextInternal(
const EditorDOMPointBase<PT, CT>& aPoint, bool aNoBlockCrossing);
/**
* GetNextEditableHTMLNode*() methods are similar to
* EditorBase::GetNextEditableNode() but this won't return nodes outside
* active editing host.
*
* Note that same as EditorBase::GetTextEditableNode(), methods which take
* |const EditorRawDOMPoint&| start to search from the node pointed by it.
* On the other hand, methods which take |nsINode&| start to search from
* next node of aNode.
*/
nsIContent* GetNextEditableHTMLNode(nsINode& aNode) {
return GetNextEditableHTMLNodeInternal(aNode, false);
}
nsIContent* GetNextEditableHTMLNodeInBlock(nsINode& aNode) {
return GetNextEditableHTMLNodeInternal(aNode, true);
}
template <typename PT, typename CT>
nsIContent* GetNextEditableHTMLNode(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetNextEditableHTMLNodeInternal(aPoint, false);
}
template <typename PT, typename CT>
nsIContent* GetNextEditableHTMLNodeInBlock(
const EditorDOMPointBase<PT, CT>& aPoint) {
return GetNextEditableHTMLNodeInternal(aPoint, true);
}
/**
* GetNextEditableHTMLNodeInternal() methods are common implementation
* of above methods. Please don't use this method directly.
*/
nsIContent* GetNextEditableHTMLNodeInternal(nsINode& aNode,
bool aNoBlockCrossing);
template <typename PT, typename CT>
nsIContent* GetNextEditableHTMLNodeInternal(
const EditorDOMPointBase<PT, CT>& aPoint, bool aNoBlockCrossing);
bool IsFirstEditableChild(nsINode* aNode);
bool IsLastEditableChild(nsINode* aNode);
nsIContent* GetFirstEditableChild(nsINode& aNode);
nsIContent* GetLastEditableChild(nsINode& aNode);
nsIContent* GetFirstEditableLeaf(nsINode& aNode);
nsIContent* GetLastEditableLeaf(nsINode& aNode);
nsresult GetInlinePropertyBase(nsAtom& aProperty, nsAtom* aAttribute,
const nsAString* aValue, bool* aFirst,
bool* aAny, bool* aAll, nsAString* outValue);
MOZ_CAN_RUN_SCRIPT
nsresult ClearStyle(nsCOMPtr<nsINode>* aNode, int32_t* aOffset,
nsAtom* aProperty, nsAtom* aAttribute);
nsresult SetPositionToAbsolute(Element& aElement);
MOZ_CAN_RUN_SCRIPT
nsresult SetPositionToStatic(Element& aElement);
/**
* OnModifyDocument() is called when the editor is changed. This should
* be called only by HTMLEditRules::DocumentModifiedWorker() to call
* HTMLEditRules::OnModifyDocument() with AutoEditActionDataSetter
* instance.
*/
MOZ_CAN_RUN_SCRIPT void OnModifyDocument();
protected: // Called by helper classes.
virtual void OnStartToHandleTopLevelEditSubAction(
EditSubAction aEditSubAction, nsIEditor::EDirection aDirection) override;
MOZ_CAN_RUN_SCRIPT
virtual void OnEndHandlingTopLevelEditSubAction() override;
protected: // Shouldn't be used by friend classes
virtual ~HTMLEditor();
/**
* InsertParagraphSeparatorAsSubAction() inserts a line break if it's
* HTMLEditor and it's possible.
*/
nsresult InsertParagraphSeparatorAsSubAction();
MOZ_CAN_RUN_SCRIPT
virtual nsresult SelectAllInternal() override;
/**
* SelectContentInternal() sets Selection to aContentToSelect to
* aContentToSelect + 1 in parent of aContentToSelect.
*
* @param aContentToSelect The content which should be selected.
*/
MOZ_CAN_RUN_SCRIPT
nsresult SelectContentInternal(nsIContent& aContentToSelect);
/**
* CollapseSelectionAfter() collapses Selection after aElement.
* If aElement is an orphan node or not in editing host, returns error.
*/
nsresult CollapseSelectionAfter(Element& aElement);
/**
* GetElementOrParentByTagNameAtSelection() looks for an element node whose
* name matches aTagName from anchor node of Selection to <body> element.
*
* @param aTagName The tag name which you want to look for.
* Must not be nsGkAtoms::_empty.
* If nsGkAtoms::list, the result may be <ul>, <ol> or
* <dl> element.
* If nsGkAtoms::td, the result may be <td> or <th>.
* If nsGkAtoms::href, the result may be <a> element
* which has "href" attribute with non-empty value.
* If nsGkAtoms::anchor, the result may be <a> which
* has "name" attribute with non-empty value.
* @return If an element which matches aTagName, returns
* an Element. Otherwise, nullptr.
*/
Element* GetElementOrParentByTagNameAtSelection(const nsAtom& aTagName) const;
/**
* GetElementOrParentByTagNameInternal() looks for an element node whose
* name matches aTagName from aNode to <body> element.
*
* @param aTagName The tag name which you want to look for.
* Must not be nsGkAtoms::_empty.
* If nsGkAtoms::list, the result may be <ul>, <ol> or
* <dl> element.
* If nsGkAtoms::td, the result may be <td> or <th>.
* If nsGkAtoms::href, the result may be <a> element
* which has "href" attribute with non-empty value.
* If nsGkAtoms::anchor, the result may be <a> which
* has "name" attribute with non-empty value.
* @param aNode Start node to look for the element.
* @return If an element which matches aTagName, returns
* an Element. Otherwise, nullptr.
*/
Element* GetElementOrParentByTagNameInternal(const nsAtom& aTagName,
nsINode& aNode) const;
/**
* GetSelectedElement() returns a "selected" element node. "selected" means:
* - there is only one selection range
* - the range starts from an element node or in an element
* - the range ends at immediately after same element
* - and the range does not include any other element nodes.
* Additionally, only when aTagName is nsGkAtoms::href, this thinks that an
* <a> element which has non-empty "href" attribute includes the range, the
* <a> element is selected.
*
* NOTE: This method is implementation of nsIHTMLEditor.getSelectedElement()
* and comm-central depends on this behavior. Therefore, if you need to use
* this method internally but you need to change, perhaps, you should create
* another method for avoiding breakage of comm-central apps.
*
* @param aTagName The atom of tag name in lower case. Set this to
* result of GetLowerCaseNameAtom() if you have a tag
* name with nsString.
* If nullptr, this returns any element node or nullptr.
* If nsGkAtoms::href, this returns an <a> element which
* has non-empty "href" attribute or nullptr.
* If nsGkAtoms::anchor, this returns an <a> element which
* has non-empty "name" attribute or nullptr.
* Otherwise, returns an element node whose name is
* same as aTagName or nullptr.
* @param aRv Returns error code.
* @return A "selected" element.
*/
already_AddRefed<Element> GetSelectedElement(const nsAtom* aTagName,
ErrorResult& aRv);
/**
* GetFirstTableRowElement() returns the first <tr> element in the most
* nearest ancestor of aTableOrElementInTable or itself.
*
* @param aTableOrElementInTable <table> element or another element.
* If this is a <table> element, returns
* first <tr> element in it. Otherwise,
* returns first <tr> element in nearest
* ancestor <table> element.
* @param aRv Returns an error code. When
* aTableOrElementInTable is neither
* <table> nor in a <table> element,
* returns NS_ERROR_FAILURE.
* However, if <table> does not have
* <tr> element, returns NS_OK.
*/
Element* GetFirstTableRowElement(Element& aTableOrElementInTable,
ErrorResult& aRv) const;
/**
* GetNextTableRowElement() returns next <tr> element of aTableRowElement.
* This won't cross <table> element boundary but may cross table section
* elements like <tbody>.
*
* @param aTableRowElement A <tr> element.
* @param aRv Returns error. If given element is <tr> but
* there is no next <tr> element, this returns
* nullptr but does not return error.
*/
Element* GetNextTableRowElement(Element& aTableRowElement,
ErrorResult& aRv) const;
struct CellAndIndexes;
struct CellData;
/**
* CellIndexes store both row index and column index of a table cell.
*/
struct MOZ_STACK_CLASS CellIndexes final {
int32_t mRow;
int32_t mColumn;
/**
* This constructor initializes mRowIndex and mColumnIndex with indexes of
* aCellElement.
*
* @param aCellElement An <td> or <th> element.
* @param aRv Returns error if layout information is not
* available or given element is not a table cell.
*/
CellIndexes(Element& aCellElement, ErrorResult& aRv)
: mRow(-1), mColumn(-1) {
MOZ_ASSERT(!aRv.Failed());
Update(aCellElement, aRv);
}
/**
* Update mRowIndex and mColumnIndex with indexes of aCellElement.
*
* @param See above.
*/
void Update(Element& aCellElement, ErrorResult& aRv);
/**
* This constructor initializes mRowIndex and mColumnIndex with indexes of
* cell element which contains anchor of Selection.
*
* @param aHTMLEditor The editor which creates the instance.
* @param aSelection The Selection for the editor.
* @param aRv Returns error if there is no cell element
* which contains anchor of Selection, or layout
* information is not available.
*/
CellIndexes(HTMLEditor& aHTMLEditor, Selection& aSelection,
ErrorResult& aRv)
: mRow(-1), mColumn(-1) {
Update(aHTMLEditor, aSelection, aRv);
}
/**
* Update mRowIndex and mColumnIndex with indexes of cell element which
* contains anchor of Selection.
*
* @param See above.
*/
void Update(HTMLEditor& aHTMLEditor, Selection& aSelection,
ErrorResult& aRv);
bool operator==(const CellIndexes& aOther) const {
return mRow == aOther.mRow && mColumn == aOther.mColumn;
}
bool operator!=(const CellIndexes& aOther) const {
return mRow != aOther.mRow || mColumn != aOther.mColumn;
}
private:
CellIndexes() : mRow(-1), mColumn(-1) {}
friend struct CellAndIndexes;
friend struct CellData;
};
struct MOZ_STACK_CLASS CellAndIndexes final {
RefPtr<Element> mElement;
CellIndexes mIndexes;
/**
* This constructor initializes the members with cell element which is
* selected by first range of the Selection. Note that even if the
* first range is in the cell element, this does not treat it as the
* cell element is selected.
*/
CellAndIndexes(HTMLEditor& aHTMLEditor, Selection& aSelection,
ErrorResult& aRv) {
Update(aHTMLEditor, aSelection, aRv);
}
/**
* Update mElement and mIndexes with cell element which is selected by
* first range of the Selection. Note that even if the first range is
* in the cell element, this does not treat it as the cell element is
* selected.
*/
void Update(HTMLEditor& aHTMLEditor, Selection& aSelection,
ErrorResult& aRv);
};
struct MOZ_STACK_CLASS CellData final {
RefPtr<Element> mElement;
// Current indexes which this is initialized with.
CellIndexes mCurrent;
// First column/row indexes of the cell. When current position is spanned
// from other column/row, this value becomes different from mCurrent.
CellIndexes mFirst;
// Computed rowspan/colspan values which are specified to the cell.
// Note that if the cell has larger rowspan/colspan value than actual
// table size, these values are the larger values.
int32_t mRowSpan;
int32_t mColSpan;
// Effective rowspan/colspan value at the index. For example, if first
// cell element in first row has rowspan="3", then, if this is initialized
// with 0-0 indexes, effective rowspan is 3. However, if this is
// initialized with 1-0 indexes, effective rowspan is 2.
int32_t mEffectiveRowSpan;
int32_t mEffectiveColSpan;
// mIsSelected is set to true if mElement itself or its parent <tr> or
// <table> is selected. Otherwise, e.g., the cell just contains selection
// range, this is set to false.
bool mIsSelected;
CellData()
: mRowSpan(-1),
mColSpan(-1),
mEffectiveRowSpan(-1),
mEffectiveColSpan(-1),
mIsSelected(false) {}
/**
* Those constructors initializes the members with a <table> element and
* both row and column index to specify a cell element.
*/
CellData(HTMLEditor& aHTMLEditor, Element& aTableElement, int32_t aRowIndex,
int32_t aColumnIndex, ErrorResult& aRv) {
Update(aHTMLEditor, aTableElement, aRowIndex, aColumnIndex, aRv);
}
CellData(HTMLEditor& aHTMLEditor, Element& aTableElement,
const CellIndexes& aIndexes, ErrorResult& aRv) {
Update(aHTMLEditor, aTableElement, aIndexes, aRv);
}
/**
* Those Update() methods updates the members with a <table> element and
* both row and column index to specify a cell element.
*/
void Update(HTMLEditor& aHTMLEditor, Element& aTableElement,
int32_t aRowIndex, int32_t aColumnIndex, ErrorResult& aRv) {
mCurrent.mRow = aRowIndex;
mCurrent.mColumn = aColumnIndex;
Update(aHTMLEditor, aTableElement, aRv);
}
void Update(HTMLEditor& aHTMLEditor, Element& aTableElement,
const CellIndexes& aIndexes, ErrorResult& aRv) {
mCurrent = aIndexes;
Update(aHTMLEditor, aTableElement, aRv);
}
void Update(HTMLEditor& aHTMLEditor, Element& aTableElement,
ErrorResult& aRv);
/**
* FailedOrNotFound() returns true if this failed to initialize/update
* or succeeded but found no cell element.
*/
bool FailedOrNotFound() const { return !mElement; }
/**
* IsSpannedFromOtherRowOrColumn(), IsSpannedFromOtherColumn and
* IsSpannedFromOtherRow() return true if there is no cell element
* at the index because of spanning from other row and/or column.
*/
bool IsSpannedFromOtherRowOrColumn() const {
return mElement && mCurrent != mFirst;
}
bool IsSpannedFromOtherColumn() const {
return mElement && mCurrent.mColumn != mFirst.mColumn;
}
bool IsSpannedFromOtherRow() const {
return mElement && mCurrent.mRow != mFirst.mRow;
}
/**
* NextColumnIndex() and NextRowIndex() return column/row index of
* next cell. Note that this does not check whether there is next
* cell or not actually.
*/
int32_t NextColumnIndex() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return mCurrent.mColumn + mEffectiveColSpan;
}
int32_t NextRowIndex() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return mCurrent.mRow + mEffectiveRowSpan;
}
/**
* LastColumnIndex() and LastRowIndex() return column/row index of
* column/row which is spanned by the cell.
*/
int32_t LastColumnIndex() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return NextColumnIndex() - 1;
}
int32_t LastRowIndex() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return NextRowIndex() - 1;
}
/**
* NumberOfPrecedingColmuns() and NumberOfPrecedingRows() return number of
* preceding columns/rows if current index is spanned from other column/row.
* Otherwise, i.e., current point is not spanned form other column/row,
* returns 0.
*/
int32_t NumberOfPrecedingColmuns() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return mCurrent.mColumn - mFirst.mColumn;
}
int32_t NumberOfPrecedingRows() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return mCurrent.mRow - mFirst.mRow;
}
/**
* NumberOfFollowingColumns() and NumberOfFollowingRows() return
* number of remaining columns/rows if the cell spans to other
* column/row.
*/
int32_t NumberOfFollowingColumns() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return mEffectiveColSpan - 1;
}
int32_t NumberOfFollowingRows() const {
if (NS_WARN_IF(FailedOrNotFound())) {
return -1;
}
return mEffectiveRowSpan - 1;
}
};
/**
* TableSize stores and computes number of rows and columns of a <table>
* element.
*/
struct MOZ_STACK_CLASS TableSize final {
int32_t mRowCount;
int32_t mColumnCount;
/**
* @param aHTMLEditor The editor which creates the instance.
* @param aTableOrElementInTable If a <table> element, computes number
* of rows and columns of it.
* If another element in a <table> element,
* computes number of rows and columns
* of nearest ancestor <table> element.
* Otherwise, i.e., non-<table> element
* not in <table>, returns error.
* @param aRv Returns error if the element is not
* in <table> or layout information is
* not available.
*/
TableSize(HTMLEditor& aHTMLEditor, Element& aTableOrElementInTable,
ErrorResult& aRv)
: mRowCount(-1), mColumnCount(-1) {
MOZ_ASSERT(!aRv.Failed());
Update(aHTMLEditor, aTableOrElementInTable, aRv);
}
/**
* Update mRowCount and mColumnCount for aTableOrElementInTable.
* See above for the detail.
*/
void Update(HTMLEditor& aHTMLEditor, Element& aTableOrElementInTable,
ErrorResult& aRv);
bool IsEmpty() const { return !mRowCount || !mColumnCount; }
};
/**
* GetTableCellElementAt() returns a <td> or <th> element of aTableElement
* if there is a cell at the indexes.
*
* @param aTableElement Must be a <table> element.
* @param aCellIndexes Indexes of cell which you want.
* If rowspan and/or colspan is specified 2 or
* larger, any indexes are allowed to retrieve
* the cell in the area.
* @return The cell element if there is in the <table>.
* Returns nullptr without error if the indexes
* are out of bounds.
*/
Element* GetTableCellElementAt(Element& aTableElement,
const CellIndexes& aCellIndexes) const {
return GetTableCellElementAt(aTableElement, aCellIndexes.mRow,
aCellIndexes.mColumn);
}
Element* GetTableCellElementAt(Element& aTableElement, int32_t aRowIndex,
int32_t aColumnIndex) const;
/**
* GetSelectedOrParentTableElement() returns <td>, <th>, <tr> or <table>
* element:
* #1 if the first selection range selects a cell, returns it.
* #2 if the first selection range does not select a cell and
* the selection anchor refers a <table>, returns it.
* #3 if the first selection range does not select a cell and
* the selection anchor refers a <tr>, returns it.
* #4 if the first selection range does not select a cell and
* the selection anchor refers a <td>, returns it.
* #5 otherwise, nearest ancestor <td> or <th> element of the
* selection anchor if there is.
* In #1 and #4, *aIsCellSelected will be set to true (i.e,, when
* a selection range selects a cell element).
*/
already_AddRefed<Element> GetSelectedOrParentTableElement(
ErrorResult& aRv, bool* aIsCellSelected = nullptr) const;
/**
* PasteInternal() pasts text with replacing selected content.
* This tries to dispatch ePaste event first. If its defaultPrevent() is
* called, this does nothing but returns NS_OK.
*
* @param aClipboardType nsIClipboard::kGlobalClipboard or
* nsIClipboard::kSelectionClipboard.
* @param aDispatchPasteEvent true if this should dispatch ePaste event
* before pasting. Otherwise, false.
*/
MOZ_CAN_RUN_SCRIPT
nsresult PasteInternal(int32_t aClipboardType, bool aDispatchPasteEvent);
/**
* InsertAsCitedQuotationInternal() inserts a <blockquote> element whose
* cite attribute is aCitation and whose content is aQuotedText.
* Note that this shouldn't be called when IsPlaintextEditor() is true.
*
* @param aQuotedText HTML source if aInsertHTML is true. Otherwise,
* plain text. This is inserted into new <blockquote>
* element.
* @param aCitation cite attribute value of new <blockquote> element.
* @param aInsertHTML true if aQuotedText should be treated as HTML
* source.
* false if aQuotedText should be treated as plain
* text.
* @param aNodeInserted [OUT] The new <blockquote> element.
*/
MOZ_CAN_RUN_SCRIPT
nsresult InsertAsCitedQuotationInternal(const nsAString& aQuotedText,
const nsAString& aCitation,
bool aInsertHTML,
nsINode** aNodeInserted);
/**
* InsertNodeIntoProperAncestorWithTransaction() attempts to insert aNode
* into the document, at aPointToInsert. Checks with strict dtd to see if
* containment is allowed. If not allowed, will attempt to find a parent
* in the parent hierarchy of aPointToInsert.GetContainer() that will accept
* aNode as a child. If such a parent is found, will split the document
* tree from aPointToInsert up to parent, and then insert aNode.
* aPointToInsert is then adjusted to point to the actual location that
* aNode was inserted at. aSplitAtEdges specifies if the splitting process
* is allowed to result in empty nodes.
*
* @param aNode Node to insert.
* @param aPointToInsert Insertion point.
* @param aSplitAtEdges Splitting can result in empty nodes?
* @return Returns inserted point if succeeded.
* Otherwise, the result is not set.
*/
template <typename PT, typename CT>
MOZ_CAN_RUN_SCRIPT EditorDOMPoint InsertNodeIntoProperAncestorWithTransaction(
nsIContent& aNode, const EditorDOMPointBase<PT, CT>& aPointToInsert,
SplitAtEdges aSplitAtEdges);
/**
* InsertBrElementAtSelectionWithTransaction() inserts a new <br> element at
* selection. If there is non-collapsed selection ranges, the selected
* ranges is deleted first.
*/
nsresult InsertBrElementAtSelectionWithTransaction();
/**
* InsertTextWithQuotationsInternal() replaces selection with new content.
* First, this method splits aStringToInsert to multiple chunks which start
* with non-linebreaker except first chunk and end with a linebreaker except
* last chunk. Then, each chunk starting with ">" is inserted after wrapping
* with <span _moz_quote="true">, and each chunk not starting with ">" is
* inserted as normal text.
*/
nsresult InsertTextWithQuotationsInternal(const nsAString& aStringToInsert);
/**
* IndentOrOutdentAsSubAction() indents or outdents the content around
* Selection. Callers have to guarantee that there is a placeholder
* transaction.
*
* @param aEditSubAction Must be EditSubAction::eIndent or
* EditSubAction::eOutdent.
*/
nsresult IndentOrOutdentAsSubAction(EditSubAction aEditSubAction);
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nsresult LoadHTML(const nsAString& aInputString);
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nsresult SetInlinePropertyInternal(nsAtom& aProperty, nsAtom* aAttribute,
const nsAString& aValue);
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nsresult RemoveInlinePropertyInternal(nsAtom* aProperty, nsAtom* aAttribute);
/**
* ReplaceHeadContentsWithSourceWithTransaction() replaces all children of
* <head> element with given source code. This is undoable.
*
* @param aSourceToInsert HTML source fragment to replace the children
* of <head> element.
*/
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nsresult ReplaceHeadContentsWithSourceWithTransaction(
const nsAString& aSourceToInsert);
nsresult GetCSSBackgroundColorState(bool* aMixed, nsAString& aOutColor,
bool aBlockLevel);
nsresult GetHTMLBackgroundColorState(bool* aMixed, nsAString& outColor);
nsresult GetLastCellInRow(nsINode* aRowNode, nsINode** aCellNode);
static nsresult GetCellFromRange(nsRange* aRange, Element** aCell);
/**
* This sets background on the appropriate container element (table, cell,)
* or calls into nsTextEditor to set the page background.
*/
nsresult SetCSSBackgroundColorWithTransaction(const nsAString& aColor);
nsresult SetHTMLBackgroundColorWithTransaction(const nsAString& aColor);
virtual void InitializeSelectionAncestorLimit(
nsIContent& aAncestorLimit) override;
/**
* Make the given selection span the entire document.
*/
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virtual nsresult SelectEntireDocument() override;
/**
* Use this to assure that selection is set after attribute nodes when
* trying to collapse selection at begining of a block node
* e.g., when setting at beginning of a table cell
* This will stop at a table, however, since we don't want to
* "drill down" into nested tables.
*/
void CollapseSelectionToDeepestNonTableFirstChild(nsINode* aNode);
/**
* Returns TRUE if sheet was loaded, false if it wasn't.
*/
bool EnableExistingStyleSheet(const nsAString& aURL);
/**
* GetStyleSheetForURL() returns a pointer to StyleSheet which was added
* with AddOverrideStyleSheetInternal(). If it's not found, returns nullptr.
*
* @param aURL URL to the style sheet.
*/
StyleSheet* GetStyleSheetForURL(const nsAString& aURL);
/**
* Add a url + known style sheet to the internal lists.
*/
nsresult AddNewStyleSheetToList(const nsAString& aURL,
StyleSheet* aStyleSheet);
/**
* Removes style sheet from the internal lists.
*
* @param aURL URL to the style sheet.
* @return If the URL is in the internal list, returns the
* removed style sheet. Otherwise, i.e., not found,
* nullptr.
*/
already_AddRefed<StyleSheet> RemoveStyleSheetFromList(const nsAString& aURL);
/**
* Add and apply the style sheet synchronously.
*
* @param aURL URL to the style sheet.
*/
nsresult AddOverrideStyleSheetInternal(const nsAString& aURL);
/**
* Remove the style sheet from this editor synchronously.
*
* @param aURL URL to the style sheet.
* @return Even if there is no specified style sheet in the
* internal lists, this returns NS_OK.
*/
nsresult RemoveOverrideStyleSheetInternal(const nsAString& aURL);
/**
* Enable or disable the style sheet synchronously.
* aURL is just a key to specify a style sheet in the internal array.
* I.e., the style sheet has already been registered with
* AddOverrideStyleSheetInternal().
*
* @param aURL URL to the style sheet.
* @param aEnable true if enable the style sheet. false if disable it.
*/
void EnableStyleSheetInternal(const nsAString& aURL, bool aEnable);
/**
* MaybeCollapseSelectionAtFirstEditableNode() may collapse selection at
* proper position to staring to edit. If there is a non-editable node
* before any editable text nodes or inline elements which can have text
* nodes as their children, collapse selection at start of the editing
* host. If there is an editable text node which is not collapsed, collapses
* selection at the start of the text node. If there is an editable inline
* element which cannot have text nodes as its child, collapses selection at
* before the element node. Otherwise, collapses selection at start of the
* editing host.
*
* @param aIgnoreIfSelectionInEditingHost
* This method does nothing if selection is in the
* editing host except if it's collapsed at start of
* the editing host.
* Note that if selection ranges were outside of
* current selection limiter, selection was collapsed
* at the start of the editing host therefore, if
* you call this with setting this to true, you can
* keep selection ranges if user has already been
* changed.
*/
nsresult MaybeCollapseSelectionAtFirstEditableNode(
bool aIgnoreIfSelectionInEditingHost);
class BlobReader final {
typedef EditorBase::AutoEditActionDataSetter AutoEditActionDataSetter;
public:
BlobReader(dom::BlobImpl* aBlob, HTMLEditor* aHTMLEditor, bool aIsSafe,
Document* aSourceDoc, const EditorDOMPoint& aPointToInsert,
bool aDoDeleteSelection);
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(BlobReader)
NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(BlobReader)
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nsresult OnResult(const nsACString& aResult);
nsresult OnError(const nsAString& aErrorName);
private:
~BlobReader() {}
RefPtr<dom::BlobImpl> mBlob;
RefPtr<HTMLEditor> mHTMLEditor;
nsCOMPtr<Document> mSourceDoc;
EditorDOMPoint mPointToInsert;
EditAction mEditAction;
bool mIsSafe;
bool mDoDeleteSelection;
};
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virtual nsresult InitRules() override;
virtual void CreateEventListeners() override;
virtual nsresult InstallEventListeners() override;
virtual void RemoveEventListeners() override;
bool ShouldReplaceRootElement();
void NotifyRootChanged();
Element* GetBodyElement();
/**
* Get the focused node of this editor.
* @return If the editor has focus, this returns the focused node.
* Otherwise, returns null.
*/
already_AddRefed<nsINode> GetFocusedNode();
virtual already_AddRefed<Element> GetInputEventTargetElement() override;
/**
* Return TRUE if aElement is a table-related elemet and caret was set.
*/
bool SetCaretInTableCell(dom::Element* aElement);
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nsresult TabInTable(bool inIsShift, bool* outHandled);
/**
* InsertPosition is an enum to indicate where the method should insert to.
*/
enum class InsertPosition {
// Before selected cell or a cell containing first selection range.
eBeforeSelectedCell,
// After selected cell or a cell containing first selection range.
eAfterSelectedCell,
};
/**
* InsertTableCellsWithTransaction() inserts <td> elements before or after
* a cell element containing first selection range. I.e., if the cell
* spans columns and aInsertPosition is eAfterSelectedCell, new columns
* will be inserted after the right-most column which contains the cell.
* Note that this simply inserts <td> elements, i.e., colspan and rowspan
* around the cell containing selection are not modified. So, for example,
* adding a cell to rectangular table changes non-rectangular table.
* And if the cell containing selection is at left of row-spanning cell,
* it may be moved to right side of the row-spanning cell after inserting
* some cell elements before it. Similarly, colspan won't be adjusted
* for keeping table rectangle.
* If first selection range is not in table cell element, this does nothing
* but does not return error.
*
* @param aNumberOfCellssToInsert Number of cells to insert.
* @param aInsertPosition Before or after the target cell which
* contains first selection range.
*/
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nsresult InsertTableCellsWithTransaction(int32_t aNumberOfCellsToInsert,
InsertPosition aInsertPosition);
/**
* InsertTableColumnsWithTransaction() inserts columns before or after
* a cell element containing first selection range. I.e., if the cell
* spans columns and aInsertPosition is eAfterSelectedCell, new columns
* will be inserted after the right-most row which contains the cell.
* If first selection range is not in table cell element, this does nothing
* but does not return error.
*
* @param aNumberOfColumnsToInsert Number of columns to insert.
* @param aInsertPosition Before or after the target cell which
* contains first selection range.
*/
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nsresult InsertTableColumnsWithTransaction(int32_t aNumberOfColumnsToInsert,
InsertPosition aInsertPosition);
/**
* InsertTableRowsWithTransaction() inserts <tr> elements before or after
* a cell element containing first selection range. I.e., if the cell
* spans rows and aInsertPosition is eAfterSelectedCell, new rows will be
* inserted after the most-bottom row which contains the cell. If first
* selection range is not in table cell element, this does nothing but
* does not return error.
*
* @param aNumberOfRowsToInsert Number of rows to insert.
* @param aInsertPosition Before or after the target cell which
* contains first selection range.
*/
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nsresult InsertTableRowsWithTransaction(int32_t aNumberOfRowsToInsert,
InsertPosition aInsertPosition);
/**
* Insert a new cell after or before supplied aCell.
* Optional: If aNewCell supplied, returns the newly-created cell (addref'd,
* of course)
* This doesn't change or use the current selection.
*/
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nsresult InsertCell(Element* aCell, int32_t aRowSpan, int32_t aColSpan,
bool aAfter, bool aIsHeader, Element** aNewCell);
/**
* DeleteSelectedTableColumnsWithTransaction() removes cell elements which
* belong to same columns of selected cell elements.
* If only one cell element is selected or first selection range is
* in a cell, removes cell elements which belong to same column.
* If 2 or more cell elements are selected, removes cell elements which
* belong to any of all selected columns. In this case,
* aNumberOfColumnsToDelete is ignored.
* If there is no selection ranges, returns error.
* If selection is not in a cell element, this does not return error,
* just does nothing.
* WARNING: This does not remove <col> nor <colgroup> elements.
*
* @param aNumberOfColumnsToDelete Number of columns to remove. This is
* ignored if 2 ore more cells are
* selected.
*/
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nsresult DeleteSelectedTableColumnsWithTransaction(
int32_t aNumberOfColumnsToDelete);
/**
* DeleteTableColumnWithTransaction() removes cell elements which belong
* to the specified column.
* This method adjusts colspan attribute value if cells spanning the
* column to delete.
* WARNING: This does not remove <col> nor <colgroup> elements.
*
* @param aTableElement The <table> element which contains the
* column which you want to remove.
* @param aRowIndex Index of the column which you want to remove.
* 0 is the first column.
*/
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nsresult DeleteTableColumnWithTransaction(Element& aTableElement,
int32_t aColumnIndex);
/**
* DeleteSelectedTableRowsWithTransaction() removes <tr> elements.
* If only one cell element is selected or first selection range is
* in a cell, removes <tr> elements starting from a <tr> element
* containing the selected cell or first selection range.
* If 2 or more cell elements are selected, all <tr> elements
* which contains selected cell(s). In this case, aNumberOfRowsToDelete
* is ignored.
* If there is no selection ranges, returns error.
* If selection is not in a cell element, this does not return error,
* just does nothing.
*
* @param aNumberOfRowsToDelete Number of rows to remove. This is ignored
* if 2 or more cells are selected.
*/
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nsresult DeleteSelectedTableRowsWithTransaction(
int32_t aNumberOfRowsToDelete);
/**
* DeleteTableRowWithTransaction() removes a <tr> element whose index in
* the <table> is aRowIndex.
* This method adjusts rowspan attribute value if the <tr> element contains
* cells which spans rows.
*
* @param aTableElement The <table> element which contains the
* <tr> element which you want to remove.
* @param aRowIndex Index of the <tr> element which you want to
* remove. 0 is the first row.
*/
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nsresult DeleteTableRowWithTransaction(Element& aTableElement,
int32_t aRowIndex);
/**
* DeleteTableCellWithTransaction() removes table cell elements. If two or
* more cell elements are selected, this removes all selected cell elements.
* Otherwise, this removes some cell elements starting from selected cell
* element or a cell containing first selection range. When this removes
* last cell element in <tr> or <table>, this removes the <tr> or the
* <table> too. Note that when removing a cell causes number of its row
* becomes less than the others, this method does NOT fill the place with
* rowspan nor colspan. This does not return error even if selection is not
* in cell element, just does nothing.
*
* @param aNumberOfCellsToDelete Number of cells to remove. This is ignored
* if 2 or more cells are selected.
*/
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nsresult DeleteTableCellWithTransaction(int32_t aNumberOfCellsToDelete);
/**
* DeleteAllChildrenWithTransaction() removes all children of aElement from
* the tree.
*
* @param aElement The element whose children you want to remove.
*/
nsresult DeleteAllChildrenWithTransaction(Element& aElement);
/**
* Move all contents from aCellToMerge into aTargetCell (append at end).
*/
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nsresult MergeCells(RefPtr<Element> aTargetCell, RefPtr<Element> aCellToMerge,
bool aDeleteCellToMerge);
/**
* DeleteTableElementAndChildren() removes aTableElement (and its children)
* from the DOM tree with transaction.
*
* @param aTableElement The <table> element which you want to remove.
*/
nsresult DeleteTableElementAndChildrenWithTransaction(Element& aTableElement);
nsresult SetColSpan(Element* aCell, int32_t aColSpan);
nsresult SetRowSpan(Element* aCell, int32_t aRowSpan);
/**
* Helper used to get nsTableWrapperFrame for a table.
*/
static nsTableWrapperFrame* GetTableFrame(Element* aTable);
/**
* GetNumberOfCellsInRow() returns number of actual cell elements in the row.
* If some cells appear by "rowspan" in other rows, they are ignored.
*
* @param aTableElement The <table> element.
* @param aRowIndex Valid row index in aTableElement. This method
* counts cell elements in the row.
* @return -1 if this meets unexpected error.
* Otherwise, number of cells which this method found.
*/
int32_t GetNumberOfCellsInRow(Element& aTableElement, int32_t aRowIndex);
/**
* Test if all cells in row or column at given index are selected.
*/
bool AllCellsInRowSelected(Element* aTable, int32_t aRowIndex,
int32_t aNumberOfColumns);
bool AllCellsInColumnSelected(Element* aTable, int32_t aColIndex,
int32_t aNumberOfRows);
bool IsEmptyCell(Element* aCell);
/**
* Most insert methods need to get the same basic context data.
* Any of the pointers may be null if you don't need that datum (for more
* efficiency).
* Input: *aCell is a known cell,
* if null, cell is obtained from the anchor node of the selection.
* Returns NS_EDITOR_ELEMENT_NOT_FOUND if cell is not found even if aCell is
* null.
*/
nsresult GetCellContext(Element** aTable, Element** aCell,
nsINode** aCellParent, int32_t* aCellOffset,
int32_t* aRowIndex, int32_t* aColIndex);
nsresult GetCellSpansAt(Element* aTable, int32_t aRowIndex, int32_t aColIndex,
int32_t& aActualRowSpan, int32_t& aActualColSpan);
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nsresult SplitCellIntoColumns(Element* aTable, int32_t aRowIndex,
int32_t aColIndex, int32_t aColSpanLeft,
int32_t aColSpanRight, Element** aNewCell);
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nsresult SplitCellIntoRows(Element* aTable, int32_t aRowIndex,
int32_t aColIndex, int32_t aRowSpanAbove,
int32_t aRowSpanBelow, Element** aNewCell);
nsresult CopyCellBackgroundColor(Element* aDestCell, Element* aSourceCell);
/**
* Reduce rowspan/colspan when cells span into nonexistent rows/columns.
*/
nsresult FixBadRowSpan(Element* aTable, int32_t aRowIndex,
int32_t& aNewRowCount);
nsresult FixBadColSpan(Element* aTable, int32_t aColIndex,
int32_t& aNewColCount);
/**
* XXX NormalizeTableInternal() is broken. If it meets a cell which has
* bigger or smaller rowspan or colspan than actual number of cells,
* this always failed to scan the table. Therefore, this does nothing
* when the table should be normalized.
*
* @param aTableOrElementInTable An element which is in a <table> element
* or <table> element itself. Otherwise,
* this returns NS_OK but does nothing.
*/
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nsresult NormalizeTableInternal(Element& aTableOrElementInTable);
/**
* Fallback method: Call this after using ClearSelection() and you
* failed to set selection to some other content in the document.
*/
nsresult SetSelectionAtDocumentStart();
static Element* GetEnclosingTable(nsINode* aNode);
// Methods for handling plaintext quotations
nsresult PasteAsPlaintextQuotation(int32_t aSelectionType);
/**
* Insert a string as quoted text, replacing the selected text (if any).
* @param aQuotedText The string to insert.
* @param aAddCites Whether to prepend extra ">" to each line
* (usually true, unless those characters
* have already been added.)
* @return aNodeInserted The node spanning the insertion, if applicable.
* If aAddCites is false, this will be null.
*/
nsresult InsertAsPlaintextQuotation(const nsAString& aQuotedText,
bool aAddCites, nsINode** aNodeInserted);
/**
* InsertObject() inserts given object at aPointToInsert.
*/
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nsresult InsertObject(const nsACString& aType, nsISupports* aObject,
bool aIsSafe, Document* aSourceDoc,
const EditorDOMPoint& aPointToInsert,
bool aDoDeleteSelection);
// factored methods for handling insertion of data from transferables
// (drag&drop or clipboard)
virtual nsresult PrepareTransferable(nsITransferable** transferable) override;
nsresult PrepareHTMLTransferable(nsITransferable** transferable);
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nsresult InsertFromTransferable(nsITransferable* transferable,
Document* aSourceDoc,
const nsAString& aContextStr,
const nsAString& aInfoStr,
bool havePrivateHTMLFlavor,
bool aDoDeleteSelection);
/**
* InsertFromDataTransfer() is called only when user drops data into
* this editor. Don't use this method for other purposes.
*/
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nsresult InsertFromDataTransfer(dom::DataTransfer* aDataTransfer,
int32_t aIndex, Document* aSourceDoc,
const EditorDOMPoint& aDroppedAt,
bool aDoDeleteSelection);
bool HavePrivateHTMLFlavor(nsIClipboard* clipboard);
nsresult ParseCFHTML(nsCString& aCfhtml, char16_t** aStuffToPaste,
char16_t** aCfcontext);
nsresult StripFormattingNodes(nsIContent& aNode, bool aOnlyList = false);
nsresult CreateDOMFragmentFromPaste(
const nsAString& aInputString, const nsAString& aContextStr,
const nsAString& aInfoStr, nsCOMPtr<nsINode>* outFragNode,
nsCOMPtr<nsINode>* outStartNode, nsCOMPtr<nsINode>* outEndNode,
int32_t* outStartOffset, int32_t* outEndOffset, bool aTrustedInput);
nsresult ParseFragment(const nsAString& aStr, nsAtom* aContextLocalName,
Document* aTargetDoc,
dom::DocumentFragment** aFragment, bool aTrustedInput);
void CreateListOfNodesToPaste(dom::DocumentFragment& aFragment,
nsTArray<OwningNonNull<nsINode>>& outNodeList,
nsINode* aStartContainer, int32_t aStartOffset,
nsINode* aEndContainer, int32_t aEndOffset);
enum class StartOrEnd { start, end };
void GetListAndTableParents(StartOrEnd aStartOrEnd,
nsTArray<OwningNonNull<nsINode>>& aNodeList,
nsTArray<OwningNonNull<Element>>& outArray);
int32_t DiscoverPartialListsAndTables(
nsTArray<OwningNonNull<nsINode>>& aPasteNodes,
nsTArray<OwningNonNull<Element>>& aListsAndTables);
nsINode* ScanForListAndTableStructure(
StartOrEnd aStartOrEnd, nsTArray<OwningNonNull<nsINode>>& aNodes,
Element& aListOrTable);
void ReplaceOrphanedStructure(
StartOrEnd aStartOrEnd, nsTArray<OwningNonNull<nsINode>>& aNodeArray,
nsTArray<OwningNonNull<Element>>& aListAndTableArray,
int32_t aHighWaterMark);
/**
* GetBetterInsertionPointFor() returns better insertion point to insert
* aNodeToInsert.
*
* @param aNodeToInsert The node to insert.
* @param aPointToInsert A candidate point to insert the node.
* @return Better insertion point if next visible node
* is a <br> element and previous visible node
* is neither none, another <br> element nor
* different block level element.
*/
EditorRawDOMPoint GetBetterInsertionPointFor(
nsINode& aNodeToInsert, const EditorRawDOMPoint& aPointToInsert);
/**
* MakeDefinitionListItemWithTransaction() replaces parent list of current
* selection with <dl> or create new <dl> element and creates a definition
* list item whose name is aTagName.
*
* @param aTagName Must be nsGkAtoms::dt or nsGkAtoms::dd.
*/
nsresult MakeDefinitionListItemWithTransaction(nsAtom& aTagName);
/**
* InsertBasicBlockWithTransaction() inserts a block element whose name
* is aTagName at selection.
*
* @param aTagName A block level element name. Must NOT be
* nsGkAtoms::dt nor nsGkAtoms::dd.
*/
nsresult InsertBasicBlockWithTransaction(nsAtom& aTagName);
/**
* Increase/decrease the font size of selection.
*/
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nsresult RelativeFontChange(FontSize aDir);
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nsresult RelativeFontChangeOnNode(int32_t aSizeChange, nsIContent* aNode);
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nsresult RelativeFontChangeHelper(int32_t aSizeChange, nsINode* aNode);
/**
* Helper routines for inline style.
*/
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nsresult SetInlinePropertyOnTextNode(Text& aData, int32_t aStartOffset,
int32_t aEndOffset, nsAtom& aProperty,
nsAtom* aAttribute,
const nsAString& aValue);
nsresult PromoteInlineRange(nsRange& aRange);
nsresult PromoteRangeIfStartsOrEndsInNamedAnchor(nsRange& aRange);
nsresult SplitStyleAboveRange(nsRange* aRange, nsAtom* aProperty,
nsAtom* aAttribute);
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nsresult RemoveStyleInside(nsIContent& aNode, nsAtom* aProperty,
nsAtom* aAttribute,
const bool aChildrenOnly = false);
bool IsAtFrontOfNode(nsINode& aNode, int32_t aOffset);
bool IsAtEndOfNode(nsINode& aNode, int32_t aOffset);
bool IsOnlyAttribute(const Element* aElement, nsAtom* aAttribute);
bool HasStyleOrIdOrClass(Element* aElement);
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nsresult RemoveElementIfNoStyleOrIdOrClass(Element& aElement);
/**
* Whether the outer window of the DOM event target has focus or not.
*/
bool OurWindowHasFocus();
/**
* This function is used to insert a string of HTML input optionally with some
* context information into the editable field. The HTML input either comes
* from a transferable object created as part of a drop/paste operation, or
* from the InsertHTML method. We may want the HTML input to be sanitized
* (for example, if it's coming from a transferable object), in which case
* aTrustedInput should be set to false, otherwise, the caller should set it
* to true, which means that the HTML will be inserted in the DOM verbatim.
*
* aClearStyle should be set to false if you want the paste to be affected by
* local style (e.g., for the insertHTML command).
*/
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nsresult DoInsertHTMLWithContext(
const nsAString& aInputString, const nsAString& aContextStr,
const nsAString& aInfoStr, const nsAString& aFlavor, Document* aSourceDoc,
const EditorDOMPoint& aPointToInsert, bool aDeleteSelection,
bool aTrustedInput, bool aClearStyle = true);
/**
* sets the position of an element; warning it does NOT check if the
* element is already positioned or not and that's on purpose.
* @param aElement [IN] the element
* @param aX [IN] the x position in pixels.
* @param aY [IN] the y position in pixels.
*/
void SetTopAndLeft(Element& aElement, int32_t aX, int32_t aY);
/**
* Reset a selected cell or collapsed selection (the caret) after table
* editing.
*
* @param aTable A table in the document.
* @param aRow The row ...
* @param aCol ... and column defining the cell where we will try to
* place the caret.
* @param aSelected If true, we select the whole cell instead of setting
* caret.
* @param aDirection If cell at (aCol, aRow) is not found, search for
* previous cell in the same column (aPreviousColumn) or
* row (ePreviousRow) or don't search for another cell
* (aNoSearch). If no cell is found, caret is place just
* before table; and if that fails, at beginning of
* document. Thus we generally don't worry about the
* return value and can use the
* AutoSelectionSetterAfterTableEdit stack-based object to
* insure we reset the caret in a table-editing method.
*/
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void SetSelectionAfterTableEdit(Element* aTable, int32_t aRow, int32_t aCol,
int32_t aDirection, bool aSelected);
void RemoveListenerAndDeleteRef(const nsAString& aEvent,
nsIDOMEventListener* aListener,
bool aUseCapture, ManualNACPtr aElement,
PresShell* aPresShell);
void DeleteRefToAnonymousNode(ManualNACPtr aContent, PresShell* aPresShell);
/**
* RefereshEditingUI() may refresh editing UIs for current Selection, focus,
* etc. If this shows or hides some UIs, it causes reflow. So, this is
* not safe method.
*/
nsresult RefereshEditingUI();
/**
* Returns the offset of an element's frame to its absolute containing block.
*/
nsresult GetElementOrigin(Element& aElement, int32_t& aX, int32_t& aY);
nsresult GetPositionAndDimensions(Element& aElement, int32_t& aX, int32_t& aY,
int32_t& aW, int32_t& aH,
int32_t& aBorderLeft, int32_t& aBorderTop,
int32_t& aMarginLeft, int32_t& aMarginTop);
bool IsInObservedSubtree(nsIContent* aChild);
void UpdateRootElement();
/**
* SetAllResizersPosition() moves all resizers to proper position.
* If the resizers are hidden or replaced with another set of resizers
* while this is running, this returns error. So, callers shouldn't
* keep handling the resizers if this returns error.
*/
nsresult SetAllResizersPosition();
/**
* Shows active resizers around an element's frame
* @param aResizedElement [IN] a DOM Element
*/
nsresult ShowResizersInternal(Element& aResizedElement);
/**
* Hide resizers if they are visible. If this is called while there is no
* visible resizers, this does not return error, but does nothing.
*/
nsresult HideResizersInternal();
/**
* RefreshResizersInternal() moves resizers to proper position. This does
* nothing if there is no resizing target.
*/
nsresult RefreshResizersInternal();
ManualNACPtr CreateResizer(int16_t aLocation, nsIContent& aParentContent);
void SetAnonymousElementPosition(int32_t aX, int32_t aY, Element* aResizer);
ManualNACPtr CreateShadow(nsIContent& aParentContent,
Element& aOriginalObject);
/**
* SetShadowPosition() moves the shadow element to proper position.
*
* @param aShadowElement Must be mResizingShadow or mPositioningShadow.
* @param aElement The element which has the shadow.
* @param aElementX Left of aElement.
* @param aElementY Top of aElement.
*/
nsresult SetShadowPosition(Element& aShadowElement, Element& aElement,
int32_t aElementLeft, int32_t aElementTop);
ManualNACPtr CreateResizingInfo(nsIContent& aParentContent);
nsresult SetResizingInfoPosition(int32_t aX, int32_t aY, int32_t aW,
int32_t aH);
enum class ResizeAt {
eX,
eY,
eWidth,
eHeight,
};
int32_t GetNewResizingIncrement(int32_t aX, int32_t aY, ResizeAt aResizeAt);
nsresult StartResizing(Element* aHandle);
int32_t GetNewResizingX(int32_t aX, int32_t aY);
int32_t GetNewResizingY(int32_t aX, int32_t aY);
int32_t GetNewResizingWidth(int32_t aX, int32_t aY);
int32_t GetNewResizingHeight(int32_t aX, int32_t aY);
void HideShadowAndInfo();
MOZ_CAN_RUN_SCRIPT
void SetFinalSize(int32_t aX, int32_t aY);
void SetResizeIncrements(int32_t aX, int32_t aY, int32_t aW, int32_t aH,
bool aPreserveRatio);
/**
* HideAnonymousEditingUIs() forcibly hides all editing UIs (resizers,
* inline-table-editing UI, absolute positioning UI).
*/
void HideAnonymousEditingUIs();
/**
* HideAnonymousEditingUIsIfUnnecessary() hides all editing UIs if some of
* visible UIs are now unnecessary.
*/
void HideAnonymousEditingUIsIfUnnecessary();
/**
* sets the z-index of an element.
* @param aElement [IN] the element
* @param aZorder [IN] the z-index
*/
void SetZIndex(Element& aElement, int32_t aZorder);
/**
* shows a grabber attached to an arbitrary element. The grabber is an image
* positioned on the left hand side of the top border of the element. Draggin
* and dropping it allows to change the element's absolute position in the
* document. See chrome://editor/content/images/grabber.gif
* @param aElement [IN] the element
*/
nsresult ShowGrabberInternal(Element& aElement);
/**
* Setting grabber to proper position for current mAbsolutelyPositionedObject.
* For example, while an element has grabber, the element may be resized
* or repositioned by script or something. Then, you need to reset grabber
* position with this.
*/
nsresult RefreshGrabberInternal();
/**
* hide the grabber if it shown.
*/
void HideGrabberInternal();
/**
* CreateGrabberInternal() creates a grabber for moving aParentContent.
* This sets mGrabber to the new grabber. If this returns true, it's
* always non-nullptr. Otherwise, i.e., the grabber is hidden during
* creation, this returns false.
*/
bool CreateGrabberInternal(nsIContent& aParentContent);
nsresult StartMoving();
nsresult SetFinalPosition(int32_t aX, int32_t aY);
void AddPositioningOffset(int32_t& aX, int32_t& aY);
void SnapToGrid(int32_t& newX, int32_t& newY);
nsresult GrabberClicked();
nsresult EndMoving();
nsresult GetTemporaryStyleForFocusedPositionedElement(Element& aElement,
nsAString& aReturn);
/**
* Shows inline table editing UI around a <table> element which contains
* aCellElement. This returns error if creating UI is hidden during this,
* or detects another set of UI during this. In such case, callers
* shouldn't keep handling anything for the UI.
*
* @param aCellElement Must be an <td> or <th> element.
*/
nsresult ShowInlineTableEditingUIInternal(Element& aCellElement);
/**
* Hide all inline table editing UI.
*/
void HideInlineTableEditingUIInternal();
/**
* RefreshInlineTableEditingUIInternal() moves inline table editing UI to
* proper position. This returns error if the UI is hidden or replaced
* during moving.
*/
nsresult RefreshInlineTableEditingUIInternal();
/**
* IsEmptyTextNode() returns true if aNode is a text node and does not have
* any visible characters.
*/
bool IsEmptyTextNode(nsINode& aNode);
bool IsSimpleModifiableNode(nsIContent* aContent, nsAtom* aProperty,
nsAtom* aAttribute, const nsAString* aValue);
MOZ_CAN_RUN_SCRIPT
nsresult SetInlinePropertyOnNodeImpl(nsIContent& aNode, nsAtom& aProperty,
nsAtom* aAttribute,
const nsAString& aValue);
typedef enum { eInserted, eAppended } InsertedOrAppended;
void DoContentInserted(nsIContent* aChild, InsertedOrAppended);
/**
* Returns an anonymous Element of type aTag,
* child of aParentContent. If aIsCreatedHidden is true, the class
* "hidden" is added to the created element. If aAnonClass is not
* the empty string, it becomes the value of the attribute "_moz_anonclass"
* @return a Element
* @param aTag [IN] desired type of the element to create
* @param aParentContent [IN] the parent node of the created anonymous
* element
* @param aAnonClass [IN] contents of the _moz_anonclass attribute
* @param aIsCreatedHidden [IN] a boolean specifying if the class "hidden"
* is to be added to the created anonymous
* element
*/
ManualNACPtr CreateAnonymousElement(nsAtom* aTag, nsIContent& aParentContent,
const nsAString& aAnonClass,
bool aIsCreatedHidden);
/**
* Reads a blob into memory and notifies the BlobReader object when the read
* operation is finished.
*
* @param aBlob The input blob
* @param aWindow The global object under which the read should happen.
* @param aBlobReader The blob reader object to be notified when finished.
*/
static nsresult SlurpBlob(dom::Blob* aBlob, nsPIDOMWindowOuter* aWindow,
BlobReader* aBlobReader);
protected:
RefPtr<TypeInState> mTypeInState;
RefPtr<ComposerCommandsUpdater> mComposerCommandsUpdater;
bool mCRInParagraphCreatesParagraph;
bool mCSSAware;
UniquePtr<CSSEditUtils> mCSSEditUtils;
// mSelectedCellIndex is reset by GetFirstSelectedTableCellElement(),
// then, it'll be referred and incremented by
// GetNextSelectedTableCellElement().
mutable uint32_t mSelectedCellIndex;
nsString mLastStyleSheetURL;
nsString mLastOverrideStyleSheetURL;
// Maintain a list of associated style sheets and their urls.
nsTArray<nsString> mStyleSheetURLs;
nsTArray<RefPtr<StyleSheet>> mStyleSheets;
// resizing
bool mIsObjectResizingEnabled;
bool mIsResizing;
bool mPreserveRatio;
bool mResizedObjectIsAnImage;
// absolute positioning
bool mIsAbsolutelyPositioningEnabled;
bool mResizedObjectIsAbsolutelyPositioned;
bool mGrabberClicked;
bool mIsMoving;
bool mSnapToGridEnabled;
// inline table editing
bool mIsInlineTableEditingEnabled;
// resizing
ManualNACPtr mTopLeftHandle;
ManualNACPtr mTopHandle;
ManualNACPtr mTopRightHandle;
ManualNACPtr mLeftHandle;
ManualNACPtr mRightHandle;
ManualNACPtr mBottomLeftHandle;
ManualNACPtr mBottomHandle;
ManualNACPtr mBottomRightHandle;
RefPtr<Element> mActivatedHandle;
ManualNACPtr mResizingShadow;
ManualNACPtr mResizingInfo;
RefPtr<Element> mResizedObject;
int32_t mOriginalX;
int32_t mOriginalY;
int32_t mResizedObjectX;
int32_t mResizedObjectY;
int32_t mResizedObjectWidth;
int32_t mResizedObjectHeight;
int32_t mResizedObjectMarginLeft;
int32_t mResizedObjectMarginTop;
int32_t mResizedObjectBorderLeft;
int32_t mResizedObjectBorderTop;
int32_t mXIncrementFactor;
int32_t mYIncrementFactor;
int32_t mWidthIncrementFactor;
int32_t mHeightIncrementFactor;
int8_t mInfoXIncrement;
int8_t mInfoYIncrement;
// absolute positioning
int32_t mPositionedObjectX;
int32_t mPositionedObjectY;
int32_t mPositionedObjectWidth;
int32_t mPositionedObjectHeight;
int32_t mPositionedObjectMarginLeft;
int32_t mPositionedObjectMarginTop;
int32_t mPositionedObjectBorderLeft;
int32_t mPositionedObjectBorderTop;
RefPtr<Element> mAbsolutelyPositionedObject;
ManualNACPtr mGrabber;
ManualNACPtr mPositioningShadow;
int32_t mGridSize;
// inline table editing
RefPtr<Element> mInlineEditedCell;
ManualNACPtr mAddColumnBeforeButton;
ManualNACPtr mRemoveColumnButton;
ManualNACPtr mAddColumnAfterButton;
ManualNACPtr mAddRowBeforeButton;
ManualNACPtr mRemoveRowButton;
ManualNACPtr mAddRowAfterButton;
void AddMouseClickListener(Element* aElement);
void RemoveMouseClickListener(Element* aElement);
nsCOMPtr<nsILinkHandler> mLinkHandler;
ParagraphSeparator mDefaultParagraphSeparator;
friend class AutoSelectionSetterAfterTableEdit;
friend class AutoSetTemporaryAncestorLimiter;
friend class CSSEditUtils;
friend class EditorBase;
friend class EmptyEditableFunctor;
friend class HTMLEditRules;
friend class SlurpBlobEventListener;
friend class TextEditor;
friend class WSRunObject;
};
} // namespace mozilla
mozilla::HTMLEditor* nsIEditor::AsHTMLEditor() {
return static_cast<mozilla::EditorBase*>(this)->mIsHTMLEditorClass
? static_cast<mozilla::HTMLEditor*>(this)
: nullptr;
}
const mozilla::HTMLEditor* nsIEditor::AsHTMLEditor() const {
return static_cast<const mozilla::EditorBase*>(this)->mIsHTMLEditorClass
? static_cast<const mozilla::HTMLEditor*>(this)
: nullptr;
}
#endif // #ifndef mozilla_HTMLEditor_h
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