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gecko-dev/editor/nsIEditor.idl

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
#include "domstubs.idl"
interface nsIURI;
interface nsIContent;
interface nsISelectionController;
interface nsIDocumentStateListener;
interface nsIOutputStream;
interface nsITransactionManager;
interface nsITransaction;
interface nsIEditorObserver;
interface nsIEditActionListener;
interface nsIInlineSpellChecker;
interface nsITransferable;
webidl Document;
webidl Element;
webidl Node;
webidl Selection;
%{C++
namespace mozilla {
class EditorBase;
class HTMLEditor;
class TextEditor;
} // namespace mozilla
%}
[scriptable, builtinclass, uuid(094be624-f0bf-400f-89e2-6a84baab9474)]
interface nsIEditor : nsISupports
{
%{C++
typedef short EDirection;
typedef short EStripWrappers;
%}
const short eNone = 0;
const short eNext = 1;
const short ePrevious = 2;
const short eNextWord = 3;
const short ePreviousWord = 4;
const short eToBeginningOfLine = 5;
const short eToEndOfLine = 6;
const short eStrip = 0;
const short eNoStrip = 1;
readonly attribute Selection selection;
void setAttributeOrEquivalent(in Element element,
in AString sourceAttrName,
in AString sourceAttrValue,
in boolean aSuppressTransaction);
void removeAttributeOrEquivalent(in Element element,
in DOMString sourceAttrName,
in boolean aSuppressTransaction);
/** edit flags for this editor. May be set at any time. */
attribute unsigned long flags;
/**
* the MimeType of the document
*/
attribute string contentsMIMEType;
/** Returns true if we have a document that is not marked read-only */
readonly attribute boolean isDocumentEditable;
/** Returns true if the current selection anchor is editable */
readonly attribute boolean isSelectionEditable;
/**
* the DOM Document this editor is associated with, refcounted.
*/
readonly attribute Document document;
/** the body element, i.e. the root of the editable document.
*/
readonly attribute Element rootElement;
/**
* the selection controller for the current presentation, refcounted.
*/
readonly attribute nsISelectionController selectionController;
/* ------------ Selected content removal -------------- */
/**
* DeleteSelection removes all nodes in the current selection.
* @param aDir if eNext, delete to the right (for example, the DEL key)
* if ePrevious, delete to the left (for example, the BACKSPACE key)
* @param stripWrappers If eStrip, strip any empty inline elements left
* behind after the deletion; if eNoStrip, don't. If in
* doubt, pass eStrip -- eNoStrip is only for if you're
* about to insert text or similar right after.
*/
void deleteSelection(in short action, in short stripWrappers);
/* ------------ Document info and file methods -------------- */
/** Returns true if the document has no *meaningful* content */
readonly attribute boolean documentIsEmpty;
/** Returns true if the document is modifed and needs saving */
readonly attribute boolean documentModified;
/** Sets the current 'Save' document character set */
attribute ACString documentCharacterSet;
/** to be used ONLY when we need to override the doc's modification
* state (such as when it's saved).
*/
void resetModificationCount();
/** Gets the modification count of the document we are editing.
* @return the modification count of the document being edited.
* Zero means unchanged.
*/
long getModificationCount();
/** called each time we modify the document.
* Increments the modification count of the document.
* @param aModCount the number of modifications by which
* to increase or decrease the count
*/
void incrementModificationCount(in long aModCount);
/* ------------ Transaction methods -------------- */
/** transactionManager Get the transaction manager the editor is using.
*/
readonly attribute nsITransactionManager transactionManager;
/** doTransaction() fires a transaction.
* It is provided here so clients can create their own transactions.
* If a transaction manager is present, it is used.
* Otherwise, the transaction is just executed directly.
*
* @param aTxn the transaction to execute
*/
void doTransaction(in nsITransaction txn);
/** turn the undo system on or off
* @param aEnable if PR_TRUE, the undo system is turned on if available
* if PR_FALSE the undo system is turned off if it
* was previously on
* @return if aEnable is PR_TRUE, returns NS_OK if
* the undo system could be initialized properly
* if aEnable is PR_FALSE, returns NS_OK.
*/
void enableUndo(in boolean enable);
/** undo reverses the effects of the last Do operation,
* if Undo is enabled in the editor.
* It is provided here so clients need no knowledge of whether
* the editor has a transaction manager or not.
* If a transaction manager is present, it is told to undo,
* and the result of that undo is returned.
* Otherwise, the Undo request is ignored and an
* error NS_ERROR_NOT_AVAILABLE is returned.
*
*/
void undo(in unsigned long count);
/** returns state information about the undo system.
* @param aIsEnabled [OUT] PR_TRUE if undo is enabled
* @param aCanUndo [OUT] PR_TRUE if at least one transaction is
* currently ready to be undone.
*/
void canUndo(out boolean isEnabled, out boolean canUndo);
/** redo reverses the effects of the last Undo operation
* It is provided here so clients need no knowledge of whether
* the editor has a transaction manager or not.
* If a transaction manager is present, it is told to redo and the
* result of the previously undone transaction is reapplied to the document.
* If no transaction is available for Redo, or if the document
* has no transaction manager, the Redo request is ignored and an
* error NS_ERROR_NOT_AVAILABLE is returned.
*
*/
void redo(in unsigned long count);
/** returns state information about the redo system.
* @param aIsEnabled [OUT] PR_TRUE if redo is enabled
* @param aCanRedo [OUT] PR_TRUE if at least one transaction is
currently ready to be redone.
*/
void canRedo(out boolean isEnabled, out boolean canRedo);
/** beginTransaction is a signal from the caller to the editor that
* the caller will execute multiple updates to the content tree
* that should be treated as a single logical operation,
* in the most efficient way possible.<br>
* All transactions executed between a call to beginTransaction and
* endTransaction will be undoable as an atomic action.<br>
* endTransaction must be called after beginTransaction.<br>
* Calls to beginTransaction can be nested, as long as endTransaction
* is called once per beginUpdate.
*/
void beginTransaction();
/** endTransaction is a signal to the editor that the caller is
* finished updating the content model.<br>
* beginUpdate must be called before endTransaction is called.<br>
* Calls to beginTransaction can be nested, as long as endTransaction
* is called once per beginTransaction.
*/
void endTransaction();
/**
* While setting the flag with this method to false, CreateElementTransaction,
* DeleteRangeTransaction, DeleteTextTransaction, InsertNodeTransaction,
* InsertTextTransaction and SplitNodeTransaction won't change Selection
* after modifying the DOM tree.
* Note that calling this with false does not guarantee that Selection won't
* be changed because other transaction may ignore this flag, editor itself
* may change selection, and current selection may become invalid after
* changing the DOM tree, etc.
* After calling this method with true, the caller should guarantee that
* Selection should be positioned where user expects.
*
* @param should false if you don't want above transactions to modify
* Selection automatically after modifying the DOM tree.
* Note that calling this with false does not guarantee
* that Selection is never changed.
*/
void setShouldTxnSetSelection(in boolean should);
/* ------------ Inline Spell Checking methods -------------- */
/** Returns the inline spell checker associated with this object. The spell
* checker is lazily created, so this function may create the object for
* you during this call.
* @param autoCreate If true, this will create a spell checker object
* if one does not exist yet for this editor. If false
* and the object has not been created, this function
* WILL RETURN NULL.
*/
nsIInlineSpellChecker getInlineSpellChecker(in boolean autoCreate);
/** Called when the user manually overrides the spellchecking state for this
* editor.
* @param enable The new state of spellchecking in this editor, as
* requested by the user.
*/
void setSpellcheckUserOverride(in boolean enable);
/* ------------ Clipboard methods -------------- */
/** cut the currently selected text, putting it into the OS clipboard
* What if no text is selected?
* What about mixed selections?
* What are the clipboard formats?
*/
void cut();
/** Can we cut? True if the doc is modifiable, and we have a non-
* collapsed selection.
*/
boolean canCut();
/** copy the currently selected text, putting it into the OS clipboard
* What if no text is selected?
* What about mixed selections?
* What are the clipboard formats?
*/
void copy();
/** Can we copy? True if we have a non-collapsed selection.
*/
boolean canCopy();
/** Can we delete? True if we have a non-collapsed selection.
*/
boolean canDelete();
/** paste the text in the OS clipboard at the cursor position, replacing
* the selected text (if any)
*/
void paste(in long aSelectionType);
/** Paste the text in |aTransferable| at the cursor position, replacing the
* selected text (if any).
*/
void pasteTransferable(in nsITransferable aTransferable);
/** Can we paste? True if the doc is modifiable, and we have
* pasteable data in the clipboard.
*/
boolean canPaste(in long aSelectionType);
/* ------------ Selection methods -------------- */
/** sets the document selection to the entire contents of the document */
void selectAll();
/**
* Collapses selection at start of the document. If it's an HTML editor,
* collapses selection at start of current editing host (<body> element if
* it's in designMode) instead. If there is a non-editable node before any
* editable text nodes or inline elements which can have text nodes as their
* children, collapses selection at start of the editing host. If there is
* an editable text node which is not collapsed, collapses selection at
* 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.
*/
void beginningOfDocument();
/** sets the document selection to the end of the document */
void endOfDocument();
/* ------------ Node manipulation methods -------------- */
/**
* setAttribute() sets the attribute of aElement.
* No checking is done to see if aAttribute is a legal attribute of the node,
* or if aValue is a legal value of aAttribute.
*
* @param aElement the content element to operate on
* @param aAttribute the string representation of the attribute to set
* @param aValue the value to set aAttribute to
*/
void setAttribute(in Element aElement, in AString attributestr,
in AString attvalue);
/**
* getAttributeValue() retrieves the attribute's value for aElement.
*
* @param aElement the content element to operate on
* @param aAttribute the string representation of the attribute to get
* @param aResultValue [OUT] the value of aAttribute.
* Only valid if aResultIsSet is PR_TRUE
* @return PR_TRUE if aAttribute is set on the current node,
* PR_FALSE if it is not.
*/
boolean getAttributeValue(in Element aElement,
in AString attributestr,
out AString resultValue);
/**
* removeAttribute() deletes aAttribute from the attribute list of aElement.
* If aAttribute is not an attribute of aElement, nothing is done.
*
* @param aElement the content element to operate on
* @param aAttribute the string representation of the attribute to get
*/
void removeAttribute(in Element aElement,
in AString aAttribute);
/**
* cloneAttribute() copies the attribute from the source node to
* the destination node and delete those not in the source.
*
* The supplied nodes MUST BE ELEMENTS (most callers are working with nodes)
* @param aAttribute the name of the attribute to copy
* @param aDestElement the destination element to operate on
* @param aSourceElement the source element to copy attributes from
* @exception NS_ERROR_NULL_POINTER at least one of the elements is null
*/
void cloneAttribute(in AString aAttribute,
in Element aDestElement, in Element aSourceElement);
/**
* cloneAttributes() is similar to Node::cloneNode(),
* it assures the attribute nodes of the destination are identical
* with the source node by copying all existing attributes from the
* source and deleting those not in the source.
* This is used when the destination element already exists
*
* @param aDestNode the destination element to operate on
* @param aSourceNode the source element to copy attributes from
*/
void cloneAttributes(in Element aDestElement, in Element aSourceElement);
/**
* insertNode inserts aNode into aParent at aPosition.
* No checking is done to verify the legality of the insertion.
* That is the responsibility of the caller.
* @param aNode The DOM Node to insert.
* @param aParent The node to insert the new object into
* @param aPosition The place in aParent to insert the new node
* 0=first child, 1=second child, etc.
* any number > number of current children = last child
*/
void insertNode(in Node node,
in Node parent,
in long aPosition);
/**
* splitNode() creates a new node identical to an existing node,
* and split the contents between the two nodes
* @param aExistingRightNode the node to split.
* It will become the new node's next sibling.
* @param aOffset the offset of aExistingRightNode's
* content|children to do the split at
* @param aNewLeftNode [OUT] the new node resulting from the split,
* becomes aExistingRightNode's previous sibling.
*/
void splitNode(in Node existingRightNode,
in long offset,
out Node newLeftNode);
/**
* joinNodes() takes 2 nodes and merge their content|children.
* @param aLeftNode The left node. It will be deleted.
* @param aRightNode The right node. It will remain after the join.
* @param aParent The parent of aExistingRightNode
*
* There is no requirement that the two nodes be
* of the same type. However, a text node can be
* merged only with another text node.
*/
void joinNodes(in Node leftNode,
in Node rightNode,
in Node parent);
/**
* deleteNode removes aChild from aParent.
* @param aChild The node to delete
*/
void deleteNode(in Node child);
/**
* markNodeDirty() sets a special dirty attribute on the node.
* Usually this will be called immediately after creating a new node.
* @param aNode The node for which to insert formatting.
*/
void markNodeDirty(in Node node);
/* ------------ Output methods -------------- */
/**
* Output methods:
* aFormatType is a mime type, like text/plain.
*/
AString outputToString(in AString formatType,
in unsigned long flags);
/* ------------ Various listeners methods --------------
* nsIEditor holds strong references to the editor observers, action listeners
* and document state listeners.
*/
/** add an EditorObserver to the editors list of observers. */
void addEditorObserver(in nsIEditorObserver observer);
/** Remove an EditorObserver from the editor's list of observers. */
void removeEditorObserver(in nsIEditorObserver observer);
/** add an EditActionListener to the editors list of listeners. */
void addEditActionListener(in nsIEditActionListener listener);
/** Remove an EditActionListener from the editor's list of listeners. */
void removeEditActionListener(in nsIEditActionListener listener);
/** Add a DocumentStateListener to the editors list of doc state listeners. */
void addDocumentStateListener(in nsIDocumentStateListener listener);
/** Remove a DocumentStateListener to the editors list of doc state listeners. */
void removeDocumentStateListener(in nsIDocumentStateListener listener);
/* ------------ Debug methods -------------- */
/**
* And a debug method -- show us what the tree looks like right now
*/
void dumpContentTree();
/** Dumps a text representation of the content tree to standard out */
void debugDumpContent() ;
/* Run unit tests. Noop in optimized builds */
void debugUnitTests(out long outNumTests, out long outNumTestsFailed);
/**
* forceCompositionEnd() force the composition end
*/
void forceCompositionEnd();
/**
* whether this editor has active IME transaction
*/
readonly attribute boolean composing;
%{C++
/**
* AsEditorBase() returns a pointer to EditorBase class.
*
* In order to avoid circular dependency issues, this method is defined
* in mozilla/EditorBase.h. Consumers need to #include that header.
*/
inline mozilla::EditorBase* AsEditorBase();
inline const mozilla::EditorBase* AsEditorBase() const;
/**
* AsTextEditor() returns a pointer to TextEditor class.
*
* In order to avoid circular dependency issues, this method is defined
* in mozilla/TextEditor.h. Consumers need to #include that header.
*/
inline mozilla::TextEditor* AsTextEditor();
inline const mozilla::TextEditor* AsTextEditor() const;
/**
* AsHTMLEditor() returns a pointer to HTMLEditor class.
*
* In order to avoid circular dependency issues, this method is defined
* in mozilla/HTMLEditor.h. Consumers need to #include that header.
*/
inline mozilla::HTMLEditor* AsHTMLEditor();
inline const mozilla::HTMLEditor* AsHTMLEditor() const;
%}
};
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