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52bb18a74f
anywhere any more. * Cleaned up split and join undo/redo. * Added TypeInState, a data struct that remembers things about text properties for collapsed selections, so you can type * Ctrl-B with an insertion point and the next character will be bold. * Added all the logic to handle inline vs. block elements when setting text properties. * Added some support for italic and underline as well. Adding these things is pretty easy now. Ctrl-B, Ctrl-I, Ctrl-U for testing bold, italic, underline. * Added all the logic to make sure we only add style tags where they're needed, so you should never get the same style tag nested within itself, except as needed for block elements. * Added methods for testing a node to see if a particular style is set. This isn't 100% done yet, but with very little work we could have toolbar buttons that respond to selection changed notification that show the state of bold, italic, underline, etc. in real time. Supports tri-state: whole selection is bold, some of selection is bold, none of selection is bold, ... * Fully undoable and redoable. * Added some debug printfs to transactions and editors. all controlled by a gNoisy static in each module. helps me track down undo/redo problems. if the output bugs people enough, I'll shut it off and re-enable it in my local tree. Noticably missing: make un-bold, make un-italic, etc. This is coming soon.
97 lines
2.7 KiB
C++
97 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef JoinElementTxn_h__
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#define JoinElementTxn_h__
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#include "EditTxn.h"
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#include "nsIDOMNode.h"
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#include "nsCOMPtr.h"
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#include "nsIEditor.h"
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#define JOIN_ELEMENT_TXN_IID \
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{/* 9bc5f9f0-ac48-11d2-86d8-000064657374 */ \
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0x9bc5f9f0, 0xac48, 0x11d2, \
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{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
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/**
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* A transaction that joins two elements E1 (left node) and E2 (right node)
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* into a single node E.
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* The children of E are the children of E1 followed by the children of E2.
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* After Do() and Redo(), E1 is removed from the content tree and E2 remains.
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*/
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class JoinElementTxn : public EditTxn
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{
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public:
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/** initialize the transaction
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* @param aEditor the provider of core editing operations
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* @param aLeftNode the first of two nodes to join
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* @param aRightNode the second of two nodes to join
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*/
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NS_IMETHOD Init(nsIEditor *aEditor,
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nsIDOMNode *aLeftNode,
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nsIDOMNode *aRightNode);
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protected:
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JoinElementTxn();
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public:
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virtual ~JoinElementTxn();
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NS_IMETHOD Do(void);
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NS_IMETHOD Undo(void);
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// NS_IMETHOD Redo(void);
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NS_IMETHOD GetIsTransient(PRBool *aIsTransient);
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NS_IMETHOD Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
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NS_IMETHOD Write(nsIOutputStream *aOutputStream);
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NS_IMETHOD GetUndoString(nsString **aString);
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NS_IMETHOD GetRedoString(nsString **aString);
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protected:
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/** the elements to operate upon.
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* After the merge, mRightNode remains and mLeftNode is removed from the content tree.
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*/
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nsCOMPtr<nsIDOMNode> mLeftNode;
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nsCOMPtr<nsIDOMNode> mRightNode;
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/** the offset into mNode where the children of mElement are split (for undo).<BR>
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* mOffset is the index of the first child in the right node.
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* -1 means the left node had no children.
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*/
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PRUint32 mOffset;
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/** the parent node containing mLeftNode and mRightNode */
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nsCOMPtr<nsIDOMNode> mParent;
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nsCOMPtr<nsIEditor> mEditor;
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friend class TransactionFactory;
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};
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#endif
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