mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
345 lines
16 KiB
C++
345 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef __wsrunobject_h__
|
|
#define __wsrunobject_h__
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIDOMNode.h"
|
|
#include "nsCOMArray.h"
|
|
#include "nsIContent.h"
|
|
#include "nsIEditor.h"
|
|
#include "nsEditorUtils.h"
|
|
|
|
class nsIDOMDocument;
|
|
class nsIDOMNode;
|
|
class nsHTMLEditor;
|
|
|
|
// class nsWSRunObject represents the entire whitespace situation
|
|
// around a given point. It collects up a list of nodes that contain
|
|
// whitespace and categorizes in up to 3 different WSFragments (detailed
|
|
// below). Each WSFragment is a collection of whitespace that is
|
|
// either all insignificant, or that is significant. A WSFragment could
|
|
// consist of insignificant whitespace because it is after a block
|
|
// boundary or after a break. Or it could be insignificant because it
|
|
// is before a block. Or it could be significant because it is
|
|
// surrounded by text, or starts and ends with nbsps, etc.
|
|
|
|
// Throughout I refer to LeadingWS, NormalWS, TrailingWS. LeadingWS & TrailingWS
|
|
// are runs of ascii ws that are insignificant (do not render) because they
|
|
// are adjacent to block boundaries, or after a break. NormalWS is ws that
|
|
// does cause soem rendering. Note that not all the ws in a NormalWS run need
|
|
// render. For example, two ascii spaces surrounded by text on both sides
|
|
// will only render as one space (in non-preformatted stlye html), yet both
|
|
// spaces count as NormalWS. Together, they render as the one visible space.
|
|
|
|
class nsWSRunObject
|
|
{
|
|
public:
|
|
|
|
enum BlockBoundary
|
|
{
|
|
kBeforeBlock,
|
|
kBlockStart,
|
|
kBlockEnd,
|
|
kAfterBlock
|
|
};
|
|
|
|
// constructor / destructor -----------------------------------------------
|
|
nsWSRunObject(nsHTMLEditor *aEd, nsIDOMNode *aNode, PRInt32 aOffset);
|
|
~nsWSRunObject();
|
|
|
|
// public methods ---------------------------------------------------------
|
|
|
|
// ScrubBlockBoundary removes any non-visible whitespace at the specified
|
|
// location relative to a block node.
|
|
static nsresult ScrubBlockBoundary(nsHTMLEditor *aHTMLEd,
|
|
nsCOMPtr<nsIDOMNode> *aBlock,
|
|
BlockBoundary aBoundary,
|
|
PRInt32 *aOffset = 0);
|
|
|
|
// PrepareToJoinBlocks fixes up ws at the end of aLeftParent and the
|
|
// beginning of aRightParent in preperation for them to be joined.
|
|
// example of fixup: trailingws in aLeftParent needs to be removed.
|
|
static nsresult PrepareToJoinBlocks(nsHTMLEditor *aEd,
|
|
nsIDOMNode *aLeftParent,
|
|
nsIDOMNode *aRightParent);
|
|
|
|
// PrepareToDeleteRange fixes up ws before {aStartNode,aStartOffset}
|
|
// and after {aEndNode,aEndOffset} in preperation for content
|
|
// in that range to be deleted. Note that the nodes and offsets
|
|
// are adjusted in response to any dom changes we make while
|
|
// adjusting ws.
|
|
// example of fixup: trailingws before {aStartNode,aStartOffset}
|
|
// needs to be removed.
|
|
static nsresult PrepareToDeleteRange(nsHTMLEditor *aHTMLEd,
|
|
nsCOMPtr<nsIDOMNode> *aStartNode,
|
|
PRInt32 *aStartOffset,
|
|
nsCOMPtr<nsIDOMNode> *aEndNode,
|
|
PRInt32 *aEndOffset);
|
|
|
|
// PrepareToDeleteNode fixes up ws before and after aNode in preperation
|
|
// for aNode to be deleted.
|
|
// example of fixup: trailingws before aNode needs to be removed.
|
|
static nsresult PrepareToDeleteNode(nsHTMLEditor *aHTMLEd,
|
|
nsIDOMNode *aNode);
|
|
|
|
// PrepareToSplitAcrossBlocks fixes up ws before and after
|
|
// {aSplitNode,aSplitOffset} in preperation for a block
|
|
// parent to be split. Note that the aSplitNode and aSplitOffset
|
|
// are adjusted in response to any dom changes we make while
|
|
// adjusting ws.
|
|
// example of fixup: normalws before {aSplitNode,aSplitOffset}
|
|
// needs to end with nbsp.
|
|
static nsresult PrepareToSplitAcrossBlocks(nsHTMLEditor *aHTMLEd,
|
|
nsCOMPtr<nsIDOMNode> *aSplitNode,
|
|
PRInt32 *aSplitOffset);
|
|
|
|
// InsertBreak inserts a br node at {aInOutParent,aInOutOffset}
|
|
// and makes any needed adjustments to ws around that point.
|
|
// example of fixup: normalws after {aInOutParent,aInOutOffset}
|
|
// needs to begin with nbsp.
|
|
nsresult InsertBreak(nsCOMPtr<nsIDOMNode> *aInOutParent,
|
|
PRInt32 *aInOutOffset,
|
|
nsCOMPtr<nsIDOMNode> *outBRNode,
|
|
nsIEditor::EDirection aSelect);
|
|
|
|
// InsertText inserts a string at {aInOutParent,aInOutOffset}
|
|
// and makes any needed adjustments to ws around that point.
|
|
// example of fixup: trailingws before {aInOutParent,aInOutOffset}
|
|
// needs to be removed.
|
|
nsresult InsertText(const nsAString& aStringToInsert,
|
|
nsCOMPtr<nsIDOMNode> *aInOutNode,
|
|
PRInt32 *aInOutOffset,
|
|
nsIDOMDocument *aDoc);
|
|
|
|
// DeleteWSBackward deletes a single visible piece of ws before
|
|
// the ws point (the point to create the wsRunObject, passed to
|
|
// its constructor). It makes any needed conversion to adjacent
|
|
// ws to retain its significance.
|
|
nsresult DeleteWSBackward();
|
|
|
|
// DeleteWSForward deletes a single visible piece of ws after
|
|
// the ws point (the point to create the wsRunObject, passed to
|
|
// its constructor). It makes any needed conversion to adjacent
|
|
// ws to retain its significance.
|
|
nsresult DeleteWSForward();
|
|
|
|
// PriorVisibleNode returns the first piece of visible thing
|
|
// before {aNode,aOffset}. If there is no visible ws qualifying
|
|
// it returns what is before the ws run. Note that
|
|
// {outVisNode,outVisOffset} is set to just AFTER the visible
|
|
// object.
|
|
nsresult PriorVisibleNode(nsIDOMNode *aNode,
|
|
PRInt32 aOffset,
|
|
nsCOMPtr<nsIDOMNode> *outVisNode,
|
|
PRInt32 *outVisOffset,
|
|
PRInt16 *outType);
|
|
|
|
// NextVisibleNode returns the first piece of visible thing
|
|
// after {aNode,aOffset}. If there is no visible ws qualifying
|
|
// it returns what is after the ws run. Note that
|
|
// {outVisNode,outVisOffset} is set to just BEFORE the visible
|
|
// object.
|
|
nsresult NextVisibleNode (nsIDOMNode *aNode,
|
|
PRInt32 aOffset,
|
|
nsCOMPtr<nsIDOMNode> *outVisNode,
|
|
PRInt32 *outVisOffset,
|
|
PRInt16 *outType);
|
|
|
|
// AdjustWhitespace examines the ws object for nbsp's that can
|
|
// be safely converted to regular ascii space and converts them.
|
|
nsresult AdjustWhitespace();
|
|
|
|
// public enums ---------------------------------------------------------
|
|
enum {eNone = 0};
|
|
enum {eLeadingWS = 1}; // leading insignificant ws, ie, after block or br
|
|
enum {eTrailingWS = 1 << 1}; // trailing insignificant ws, ie, before block
|
|
enum {eNormalWS = 1 << 2}; // normal significant ws, ie, after text, image, ...
|
|
enum {eText = 1 << 3}; // indicates regular (non-ws) text
|
|
enum {eSpecial = 1 << 4}; // indicates an inline non-container, like image
|
|
enum {eBreak = 1 << 5}; // indicates a br node
|
|
enum {eOtherBlock = 1 << 6}; // indicates a block other than one ws run is in
|
|
enum {eThisBlock = 1 << 7}; // indicates the block ws run is in
|
|
enum {eBlock = eOtherBlock | eThisBlock}; // block found
|
|
|
|
enum {eBefore = 1};
|
|
enum {eAfter = 1 << 1};
|
|
enum {eBoth = eBefore | eAfter};
|
|
|
|
protected:
|
|
|
|
// WSFragment struct ---------------------------------------------------------
|
|
// WSFragment represents a single run of ws (all leadingws, or all normalws,
|
|
// or all trailingws, or all leading+trailingws). Note that this single run may
|
|
// still span multiple nodes.
|
|
struct WSFragment
|
|
{
|
|
nsCOMPtr<nsIDOMNode> mStartNode; // node where ws run starts
|
|
nsCOMPtr<nsIDOMNode> mEndNode; // node where ws run ends
|
|
PRInt16 mStartOffset; // offset where ws run starts
|
|
PRInt16 mEndOffset; // offset where ws run ends
|
|
PRInt16 mType, mLeftType, mRightType; // type of ws, and what is to left and right of it
|
|
WSFragment *mLeft, *mRight; // other ws runs to left or right. may be null.
|
|
|
|
WSFragment() : mStartNode(0),mEndNode(0),mStartOffset(0),
|
|
mEndOffset(0),mType(0),mLeftType(0),
|
|
mRightType(0),mLeft(0),mRight(0) {}
|
|
};
|
|
|
|
// WSPoint struct ------------------------------------------------------------
|
|
// A WSPoint struct represents a unique location within the ws run. It is
|
|
// always within a textnode that is one of the nodes stored in the list
|
|
// in the wsRunObject. For convenience, the character at that point is also
|
|
// stored in the struct.
|
|
struct WSPoint
|
|
{
|
|
nsCOMPtr<nsIContent> mTextNode;
|
|
PRInt16 mOffset;
|
|
PRUnichar mChar;
|
|
|
|
WSPoint() : mTextNode(0),mOffset(0),mChar(0) {}
|
|
WSPoint(nsIDOMNode *aNode, PRInt32 aOffset, PRUnichar aChar) :
|
|
mTextNode(do_QueryInterface(aNode)),mOffset(aOffset),mChar(aChar)
|
|
{
|
|
if (!mTextNode->IsNodeOfType(nsINode::eDATA_NODE)) {
|
|
// Not sure if this is needed, but it'll maintain the same
|
|
// functionality
|
|
mTextNode = nsnull;
|
|
}
|
|
}
|
|
WSPoint(nsIContent *aTextNode, PRInt32 aOffset, PRUnichar aChar) :
|
|
mTextNode(aTextNode),mOffset(aOffset),mChar(aChar) {}
|
|
};
|
|
|
|
enum AreaRestriction
|
|
{
|
|
eAnywhere, eOutsideUserSelectAll
|
|
};
|
|
|
|
// protected methods ---------------------------------------------------------
|
|
// tons of utility methods.
|
|
nsresult GetWSNodes();
|
|
nsresult GetRuns();
|
|
void ClearRuns();
|
|
nsresult MakeSingleWSRun(PRInt16 aType);
|
|
nsresult PrependNodeToList(nsIDOMNode *aNode);
|
|
nsresult AppendNodeToList(nsIDOMNode *aNode);
|
|
nsresult GetPreviousWSNode(nsIDOMNode *aStartNode,
|
|
nsIDOMNode *aBlockParent,
|
|
nsCOMPtr<nsIDOMNode> *aPriorNode);
|
|
nsresult GetPreviousWSNode(nsIDOMNode *aStartNode,
|
|
PRInt16 aOffset,
|
|
nsIDOMNode *aBlockParent,
|
|
nsCOMPtr<nsIDOMNode> *aPriorNode);
|
|
nsresult GetPreviousWSNode(DOMPoint aPoint,
|
|
nsIDOMNode *aBlockParent,
|
|
nsCOMPtr<nsIDOMNode> *aPriorNode);
|
|
nsresult GetNextWSNode(nsIDOMNode *aStartNode,
|
|
nsIDOMNode *aBlockParent,
|
|
nsCOMPtr<nsIDOMNode> *aNextNode);
|
|
nsresult GetNextWSNode(nsIDOMNode *aStartNode,
|
|
PRInt16 aOffset,
|
|
nsIDOMNode *aBlockParent,
|
|
nsCOMPtr<nsIDOMNode> *aNextNode);
|
|
nsresult GetNextWSNode(DOMPoint aPoint,
|
|
nsIDOMNode *aBlockParent,
|
|
nsCOMPtr<nsIDOMNode> *aNextNode);
|
|
nsresult PrepareToDeleteRangePriv(nsWSRunObject* aEndObject);
|
|
nsresult PrepareToSplitAcrossBlocksPriv();
|
|
nsresult DeleteChars(nsIDOMNode *aStartNode, PRInt32 aStartOffset,
|
|
nsIDOMNode *aEndNode, PRInt32 aEndOffset,
|
|
AreaRestriction aAR = eAnywhere);
|
|
nsresult GetCharAfter(nsIDOMNode *aNode, PRInt32 aOffset, WSPoint *outPoint);
|
|
nsresult GetCharBefore(nsIDOMNode *aNode, PRInt32 aOffset, WSPoint *outPoint);
|
|
nsresult GetCharAfter(WSPoint &aPoint, WSPoint *outPoint);
|
|
nsresult GetCharBefore(WSPoint &aPoint, WSPoint *outPoint);
|
|
nsresult ConvertToNBSP(WSPoint aPoint,
|
|
AreaRestriction aAR = eAnywhere);
|
|
nsresult GetAsciiWSBounds(PRInt16 aDir, nsIDOMNode *aNode, PRInt32 aOffset,
|
|
nsCOMPtr<nsIDOMNode> *outStartNode, PRInt32 *outStartOffset,
|
|
nsCOMPtr<nsIDOMNode> *outEndNode, PRInt32 *outEndOffset);
|
|
nsresult FindRun(nsIDOMNode *aNode, PRInt32 aOffset, WSFragment **outRun, PRBool after);
|
|
PRUnichar GetCharAt(nsIContent *aTextNode, PRInt32 aOffset);
|
|
nsresult GetWSPointAfter(nsIDOMNode *aNode, PRInt32 aOffset, WSPoint *outPoint);
|
|
nsresult GetWSPointBefore(nsIDOMNode *aNode, PRInt32 aOffset, WSPoint *outPoint);
|
|
nsresult CheckTrailingNBSPOfRun(WSFragment *aRun);
|
|
nsresult CheckTrailingNBSP(WSFragment *aRun, nsIDOMNode *aNode, PRInt32 aOffset);
|
|
nsresult CheckLeadingNBSP(WSFragment *aRun, nsIDOMNode *aNode, PRInt32 aOffset);
|
|
|
|
static nsresult ScrubBlockBoundaryInner(nsHTMLEditor *aHTMLEd,
|
|
nsCOMPtr<nsIDOMNode> *aBlock,
|
|
BlockBoundary aBoundary);
|
|
nsresult Scrub();
|
|
|
|
// member variables ---------------------------------------------------------
|
|
|
|
nsCOMPtr<nsIDOMNode> mNode; // the node passed to our constructor
|
|
PRInt32 mOffset; // the offset passed to our contructor
|
|
// together, the above represent the point at which we are building up ws info.
|
|
|
|
PRBool mPRE; // true if we are in preformatted whitespace context
|
|
nsCOMPtr<nsIDOMNode> mStartNode; // node/offet where ws starts
|
|
PRInt32 mStartOffset; // ...
|
|
PRInt16 mStartReason; // reason why ws starts (eText, eOtherBlock, etc)
|
|
nsCOMPtr<nsIDOMNode> mStartReasonNode;// the node that implicated by start reason
|
|
|
|
nsCOMPtr<nsIDOMNode> mEndNode; // node/offet where ws ends
|
|
PRInt32 mEndOffset; // ...
|
|
PRInt16 mEndReason; // reason why ws ends (eText, eOtherBlock, etc)
|
|
nsCOMPtr<nsIDOMNode> mEndReasonNode; // the node that implicated by end reason
|
|
|
|
nsCOMPtr<nsIDOMNode> mFirstNBSPNode; // location of first nbsp in ws run, if any
|
|
PRInt32 mFirstNBSPOffset; // ...
|
|
|
|
nsCOMPtr<nsIDOMNode> mLastNBSPNode; // location of last nbsp in ws run, if any
|
|
PRInt32 mLastNBSPOffset; // ...
|
|
|
|
nsCOMArray<nsIDOMNode> mNodeArray;//the list of nodes containing ws in this run
|
|
|
|
WSFragment *mStartRun; // the first WSFragment in the run
|
|
WSFragment *mEndRun; // the last WSFragment in the run, may be same as first
|
|
|
|
nsHTMLEditor *mHTMLEditor; // non-owning.
|
|
|
|
friend class nsHTMLEditRules; // opening this class up for pillaging
|
|
friend class nsHTMLEditor; // opening this class up for more pillaging
|
|
};
|
|
|
|
#endif
|
|
|