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480 lines
15 KiB
C++
480 lines
15 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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#include "nsIDOMDocument.h"
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#include "nsEditor.h"
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#include "nsIDOMText.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMAttr.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMRange.h"
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#include "nsIDOMSelection.h"
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#include "nsLayoutCID.h"
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#include "nsIContent.h"
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#include "nsIContentIterator.h"
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#include "nsIAtom.h"
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#include "nsIDOMHTMLTableElement.h"
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#include "nsIDOMHTMLTableCellElement.h"
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#include "nsITableCellLayout.h" // For efficient access to table cell
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#include "nsITableLayout.h" // data owned by the table and cell frames
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#include "nsHTMLEditor.h"
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#include "nsEditorUtils.h"
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static NS_DEFINE_CID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
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// Table Editing methods
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NS_IMETHODIMP
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nsHTMLEditor::InsertTableCell(PRInt32 aNumber, PRBool aAfter)
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{
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nsCOMPtr<nsIDOMSelection> selection;
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nsCOMPtr<nsIDOMElement> table;
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nsCOMPtr<nsIDOMElement> cell;
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nsCOMPtr<nsIDOMNode> cellParent;
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PRInt32 cellOffset, startRow, startCol;
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nsresult res = GetCellContext(selection, table, cell, cellParent, cellOffset, startRow, startCol);
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if (NS_SUCCEEDED(res))
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{
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PRInt32 i;
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for (i = 0; i < aNumber; i++)
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{
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nsCOMPtr<nsIDOMElement> newCell;
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res = CreateElementWithDefaults("td", getter_AddRefs(newCell));
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if (NS_SUCCEEDED(res) && newCell)
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{
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if (aAfter) cellOffset++;
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res = InsertNode(newCell, cellParent, cellOffset);
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}
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}
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SetCaretAfterTableEdit(table, startRow, startCol, ePreviousColumn);
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::InsertTableColumn(PRInt32 aNumber, PRBool aAfter)
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{
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//TODO: HANDLE CASE OF aAfter = true
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nsCOMPtr<nsIDOMSelection> selection;
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nsCOMPtr<nsIDOMElement> table;
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nsCOMPtr<nsIDOMElement> cell;
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nsCOMPtr<nsIDOMNode> cellParent;
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PRInt32 cellOffset, startRow, startCol;
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nsresult res = GetCellContext(selection, table, cell, cellParent, cellOffset, startRow, startCol);
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if (NS_SUCCEEDED(res))
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{
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nsAutoEditBatch beginBatching(this);
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PRInt32 rowCount, colCount, row;
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if (NS_FAILED(GetTableSize(table, rowCount, colCount)))
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return NS_ERROR_FAILURE;
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for ( row = 0; row < rowCount; row++)
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{
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nsCOMPtr<nsIDOMElement> curCell;
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PRInt32 curStartRow, curStartCol, rowSpan, colSpan;
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PRBool curIsSelected;
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res = GetCellDataAt(table, row, startCol, *getter_AddRefs(curCell),
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curStartRow, curStartCol, rowSpan, colSpan, curIsSelected);
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if (NS_SUCCEEDED(res) && curCell)
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{
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if (curStartCol < startCol)
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{
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// We have a cell spanning this location
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// Simply increase its rowspan to keep table rectangular
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nsAutoString newColSpan;
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newColSpan.Append(colSpan+aNumber, 10);
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SetAttribute(curCell, "colspan", newColSpan);
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} else {
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// Simply set selection to the current cell
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// so we can let InsertTableCell() do the work
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// Insert a new cell before current one
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selection->Collapse(curCell, 0);
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res = InsertTableCell(aNumber, PR_FALSE);
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}
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}
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}
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SetCaretAfterTableEdit(table, startRow, startCol, ePreviousColumn);
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::InsertTableRow(PRInt32 aNumber, PRBool aAfter)
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{
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nsCOMPtr<nsIDOMSelection> selection;
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nsCOMPtr<nsIDOMElement> table;
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nsCOMPtr<nsIDOMElement> cell;
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nsCOMPtr<nsIDOMNode> cellParent;
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PRInt32 cellOffset, startRow, startCol;
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nsresult res = GetCellContext(selection, table, cell, cellParent, cellOffset, startRow, startCol);
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if (NS_SUCCEEDED(res))
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{
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nsAutoEditBatch beginBatching(this);
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//TODO: FINISH ME!
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::DeleteTable()
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{
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nsCOMPtr<nsIDOMSelection> selection;
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nsCOMPtr<nsIDOMElement> table;
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nsCOMPtr<nsIDOMElement> cell;
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nsCOMPtr<nsIDOMNode> cellParent;
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PRInt32 cellOffset, startRow, startCol;
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nsresult res = GetCellContext(selection, table, cell, cellParent, cellOffset, startRow, startCol);
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if (NS_SUCCEEDED(res))
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{
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nsAutoEditBatch beginBatching(this);
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// Save where we need to restore the selection
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nsCOMPtr<nsIDOMNode> tableParent;
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PRInt32 tableOffset;
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if(NS_FAILED(table->GetParentNode(getter_AddRefs(tableParent))) || !tableParent)
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return NS_ERROR_FAILURE;
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if(NS_FAILED(GetChildOffset(table, tableParent, tableOffset)))
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return NS_ERROR_FAILURE;
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res = DeleteNode(table);
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// Place selection just before the table
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selection->Collapse(tableParent, tableOffset);
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::DeleteTableCell(PRInt32 aNumber)
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{
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nsCOMPtr<nsIDOMSelection> selection;
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nsCOMPtr<nsIDOMElement> table;
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nsCOMPtr<nsIDOMElement> cell;
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nsCOMPtr<nsIDOMNode> cellParent;
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PRInt32 cellOffset, startRow, startCol;
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nsresult res = GetCellContext(selection, table, cell, cellParent, cellOffset, startRow, startCol);
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if (NS_SUCCEEDED(res))
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{
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nsAutoEditBatch beginBatching(this);
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// We clear the selection to avoid problems when nodes in the selection are deleted,
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// Be sure to set it correctly later (in SetCaretAfterTableEdit)!
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selection->ClearSelection();
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PRInt32 i;
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for (i = 0; i < aNumber; i++)
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{
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//TODO: FINISH ME!
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if (NS_FAILED(DeleteNode(cell)))
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break;
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}
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SetCaretAfterTableEdit(table, startRow, startCol, ePreviousColumn);
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::DeleteTableColumn(PRInt32 aNumber)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsHTMLEditor::DeleteTableRow(PRInt32 aNumber)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsHTMLEditor::JoinTableCells()
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsHTMLEditor::NormalizeTable(nsIDOMElement *aTable)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsHTMLEditor::GetCellIndexes(nsIDOMElement *aCell, PRInt32 &aColIndex, PRInt32 &aRowIndex)
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{
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nsresult res=NS_ERROR_NOT_INITIALIZED;
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aColIndex=0; // initialize out params
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aRowIndex=0;
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if (!aCell)
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{
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// Get the selected cell or the cell enclosing the selection anchor
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nsCOMPtr<nsIDOMElement> cell;
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res = GetElementOrParentByTagName("td", nsnull, getter_AddRefs(cell));
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if (NS_SUCCEEDED(res) && cell)
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aCell = cell;
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else
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return NS_ERROR_FAILURE;
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}
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res = NS_ERROR_FAILURE; // we return an error unless we get the index
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nsISupports *layoutObject=nsnull; // frames are not ref counted, so don't use an nsCOMPtr
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res = nsHTMLEditor::GetLayoutObject(aCell, &layoutObject);
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if ((NS_SUCCEEDED(res)) && (nsnull!=layoutObject))
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{ // get the table cell interface from the frame
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nsITableCellLayout *cellLayoutObject=nsnull; // again, frames are not ref-counted
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res = layoutObject->QueryInterface(nsITableCellLayout::GetIID(), (void**)(&cellLayoutObject));
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if ((NS_SUCCEEDED(res)) && (nsnull!=cellLayoutObject))
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{
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res = cellLayoutObject->GetCellIndexes(aRowIndex, aColIndex);
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}
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::GetTableLayoutObject(nsIDOMElement* aTable, nsITableLayout **tableLayoutObject)
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{
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*tableLayoutObject=nsnull;
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if (!aTable)
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return NS_ERROR_NOT_INITIALIZED;
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// frames are not ref counted, so don't use an nsCOMPtr
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nsISupports *layoutObject=nsnull;
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nsresult res = nsHTMLEditor::GetLayoutObject(aTable, &layoutObject);
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if ((NS_SUCCEEDED(res)) && (nsnull!=layoutObject))
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{ // get the table interface from the frame
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res = layoutObject->QueryInterface(nsITableLayout::GetIID(),
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(void**)(tableLayoutObject));
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}
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return res;
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}
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/* Not scriptable: For convenience in C++ */
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NS_IMETHODIMP
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nsHTMLEditor::GetTableSize(nsIDOMElement *aTable, PRInt32& aRowCount, PRInt32& aColCount)
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{
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nsresult res=NS_ERROR_FAILURE;
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aRowCount = 0;
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aColCount = 0;
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if (!aTable)
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{
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// Get the selected talbe or the table enclosing the selection anchor
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nsCOMPtr<nsIDOMElement> table;
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res = GetElementOrParentByTagName("table", nsnull, getter_AddRefs(table));
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if (NS_SUCCEEDED(res) && table)
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aTable = table;
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else
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return NS_ERROR_FAILURE;
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}
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// frames are not ref counted, so don't use an nsCOMPtr
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nsITableLayout *tableLayoutObject;
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res = GetTableLayoutObject(aTable, &tableLayoutObject);
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if ((NS_SUCCEEDED(res)) && (nsnull!=tableLayoutObject))
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{
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res = tableLayoutObject->GetTableSize(aRowCount, aColCount);
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::GetCellDataAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell,
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PRInt32& aStartRowIndex, PRInt32& aStartColIndex,
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PRInt32& aRowSpan, PRInt32& aColSpan, PRBool& aIsSelected)
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{
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nsresult res=NS_ERROR_FAILURE;
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aCell = nsnull;
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aStartRowIndex = 0;
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aStartColIndex = 0;
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aRowSpan = 0;
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aColSpan = 0;
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aIsSelected = PR_FALSE;
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if (!aTable)
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{
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// Get the selected talbe or the table enclosing the selection anchor
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nsCOMPtr<nsIDOMElement> table;
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res = GetElementOrParentByTagName("table", nsnull, getter_AddRefs(table));
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if (NS_SUCCEEDED(res) && table)
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aTable = table;
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else
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return NS_ERROR_FAILURE;
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}
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// frames are not ref counted, so don't use an nsCOMPtr
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nsITableLayout *tableLayoutObject;
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res = GetTableLayoutObject(aTable, &tableLayoutObject);
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if ((NS_SUCCEEDED(res)) && (nsnull!=tableLayoutObject))
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{
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// Note that this returns NS_TABLELAYOUT_CELL_NOT_FOUND when
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// the index(es) are out of bounds
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res = tableLayoutObject->GetCellDataAt(aRowIndex, aColIndex, aCell,
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aStartRowIndex, aStartColIndex,
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aRowSpan, aColSpan, aIsSelected);
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}
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return res;
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}
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// When all you want is the cell
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NS_IMETHODIMP
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nsHTMLEditor::GetCellAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell)
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{
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PRInt32 aStartRowIndex, aStartColIndex, aRowSpan, aColSpan;
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PRBool aIsSelected;
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return GetCellDataAt(aTable, aRowIndex, aColIndex, aCell,
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aStartRowIndex, aStartColIndex, aRowSpan, aColSpan, aIsSelected);
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}
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NS_IMETHODIMP
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nsHTMLEditor::GetCellContext(nsCOMPtr<nsIDOMSelection> &aSelection,
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nsCOMPtr<nsIDOMElement> &aTable, nsCOMPtr<nsIDOMElement> &aCell,
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nsCOMPtr<nsIDOMNode> &aCellParent, PRInt32& aCellOffset,
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PRInt32& aRow, PRInt32& aCol)
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{
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nsresult res = nsEditor::GetSelection(getter_AddRefs(aSelection));
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if (NS_FAILED(res) || !aSelection)
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return res;
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// Find the first selected cell
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res = GetFirstSelectedCell(aCell);
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if (NS_FAILED(res))
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return res;
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if (!aCell)
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{
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//If a cell wasn't selected, then assume the selection is INSIDE
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// and use anchor node to search up to the containing cell
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nsCOMPtr<nsIDOMNode> anchorNode;
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if(NS_FAILED(aSelection->GetAnchorNode(getter_AddRefs(anchorNode))) || !anchorNode)
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return NS_ERROR_FAILURE;
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// Get the cell enclosing the selection anchor
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if(NS_FAILED(GetElementOrParentByTagName("td", anchorNode, getter_AddRefs(aCell))) || !aCell)
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return NS_ERROR_FAILURE;
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}
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// Get containing table and the immediate parent of the cell
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if(NS_FAILED(GetElementOrParentByTagName("table", aCell, getter_AddRefs(aTable))) || !aTable)
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return NS_ERROR_FAILURE;
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if(NS_FAILED(aCell->GetParentNode(getter_AddRefs(aCellParent))) || !aCellParent)
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return NS_ERROR_FAILURE;
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// Get current cell location so we can put caret back there when done
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res = GetCellIndexes(aCell, aRow, aCol);
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if(NS_FAILED(res))
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return res;
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// And the parent and offsets needed to do an insert
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return GetChildOffset(aCell, aCellParent, aCellOffset);
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}
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NS_IMETHODIMP
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nsHTMLEditor::GetFirstSelectedCell(nsCOMPtr<nsIDOMElement> &aCell)
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{
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nsCOMPtr<nsIDOMSelection> selection;
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nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
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if (NS_FAILED(res) || !selection)
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return res;
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// The most straight forward way of finding a selected cell
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// is to use the selection iterator
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nsCOMPtr<nsIEnumerator> enumerator;
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res = selection->GetEnumerator(getter_AddRefs(enumerator));
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if (NS_SUCCEEDED(res) && enumerator)
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{
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enumerator->First();
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nsCOMPtr<nsISupports> currentItem;
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res = enumerator->CurrentItem(getter_AddRefs(currentItem));
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if ((NS_SUCCEEDED(res)) && currentItem)
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{
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nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
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nsCOMPtr<nsIContentIterator> iter;
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res = nsComponentManager::CreateInstance(kCContentIteratorCID, nsnull,
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nsIContentIterator::GetIID(),
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getter_AddRefs(iter));
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if ((NS_SUCCEEDED(res)) && iter)
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{
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iter->Init(range);
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// loop through the content iterator for each content node
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nsCOMPtr<nsIContent> content;
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while (NS_COMFALSE == iter->IsDone())
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{
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res = iter->CurrentNode(getter_AddRefs(content));
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// Not likely!
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if (NS_FAILED(res))
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIAtom> atom;
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content->GetTag(*getter_AddRefs(atom));
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if (atom.get() == nsIEditProperty::td ||
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atom.get() == nsIEditProperty::th )
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{
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// We found a cell
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aCell = do_QueryInterface(content);
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break;
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}
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iter->Next();
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}
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}
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}
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} else {
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printf("Could not create enumerator for GetCellContext\n");
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLEditor::SetCaretAfterTableEdit(nsIDOMElement* aTable, PRInt32 aCol, PRInt32 aRow, SetCaretSearchDirection aDirection)
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{
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nsresult res = NS_ERROR_NOT_INITIALIZED;
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if (!aTable)
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return res;
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nsCOMPtr<nsIDOMSelection>selection;
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res = nsEditor::GetSelection(getter_AddRefs(selection));
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if (!NS_SUCCEEDED(res) || !selection)
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{
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#ifdef DEBUG_cmanske
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printf("Selection not found after table manipulation!\n");
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#endif
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsIDOMElement> cell;
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res = GetCellAt(aTable, aCol, aRow, *getter_AddRefs(cell));
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nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(cell);
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if (NS_SUCCEEDED(res) && cell)
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{
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// Set the caret to just before the first child of the cell?
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// TODO: Should we really be placing the caret at the END
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// of the cell content?
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selection->Collapse(cell, 0);
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}
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//TODO: SEARCH FOR NEAREST CELL TO PLACE CARET INTO
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return res;
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}
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