/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape 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/NPL/ * * 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 Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): */ #ifndef nsITableEditor_h__ #define nsITableEditor_h__ // Wrapping includes can speed up compiles (see "Large Scale C++ Software Design") #ifndef nsCOMPtr_h___ #include "nsCOMPtr.h" #endif #ifndef nsIDOMElement_h__ #include "nsIDOMElement.h" // for |nsIDOMElement| because an |nsCOMPtr&| is used, below #endif #define NS_ITABLEEDITOR_IID \ { /* 4805e684-49b9-11d3-9ce4-ed60bd6cb5bc} */ \ 0x4805e684, 0x49b9, 0x11d3, \ { 0x9c, 0xe4, 0xed, 0x60, 0xbd, 0x6c, 0xb5, 0xbc } } class nsITableEditor : public nsISupports { public: static const nsIID& GetIID() { static nsIID iid = NS_ITABLEEDITOR_IID; return iid; } /* ------------ Table editing Methods -------------- */ /** Insert table methods * Insert relative to the selected cell or the * cell enclosing the selection anchor * The selection is collapsed and is left in the new cell * at the same row,col location as the original anchor cell * * @param aNumber Number of items to insert * @param aAfter If TRUE, insert after the current cell, * else insert before current cell */ NS_IMETHOD InsertTableCell(PRInt32 aNumber, PRBool aAfter)=0; NS_IMETHOD InsertTableColumn(PRInt32 aNumber, PRBool aAfter)=0; NS_IMETHOD InsertTableRow(PRInt32 aNumber, PRBool aAfter)=0; /** Delete table methods * Delete starting at the selected cell or the * cell (or table) enclosing the selection anchor * The selection is collapsed and is left in the * cell at the same row,col location as * the previous selection anchor, if possible, * else in the closest neigboring cell * * @param aNumber Number of items to insert/delete */ NS_IMETHOD DeleteTable()=0; NS_IMETHOD DeleteTableCell(PRInt32 aNumber)=0; NS_IMETHOD DeleteTableCellContents()=0; NS_IMETHOD DeleteTableColumn(PRInt32 aNumber)=0; NS_IMETHOD DeleteTableRow(PRInt32 aNumber)=0; /** Join the contents of the selected cells into one cell, * expanding that cells ROWSPAN and COLSPAN to take up * the same number of cellmap locations as before. * Cells whose contents were moved are deleted. * If there's one cell selected or caret is in one cell, * it is joined with the cell to the right, if it exists */ NS_IMETHOD JoinTableCells()=0; /** Scan through all rows and add cells as needed so * all locations in the cellmap are occupied. * Used after inserting single cells or pasting * a collection of cells that extend past the * previous size of the table * If aTable is null, it uses table enclosing the selection anchor * This doesn't doesn't change the selection, * thus it can be used to fixup all tables * in a page independant of the selection */ NS_IMETHOD NormalizeTable(nsIDOMElement *aTable)=0; /** Get the row an column index from the layout's cellmap * If aTable is null, it will try to find enclosing table of selection ancho * */ NS_IMETHOD GetCellIndexes(nsIDOMElement *aCell, PRInt32& aRowIndex, PRInt32& aColIndex)=0; /** Get the number of rows and columns in a table from the layout's cellmap * If aTable is null, it will try to find enclosing table of selection ancho * Note that all rows in table will not have this many because of * ROWSPAN effects or if table is not "rectangular" (has short rows) */ NS_IMETHOD GetTableSize(nsIDOMElement *aTable, PRInt32& aRowCount, PRInt32& aColCount)=0; /** Get a cell element at cellmap grid coordinates * A cell that spans across multiple cellmap locations will * be returned multiple times, once for each location it occupies * * @param aTable A table in the document * @param aRowIndex, aColIndex The 0-based cellmap indexes * * Note that this returns NS_TABLELAYOUT_CELL_NOT_FOUND * when a cell is not found at the given indexes, * but this passes the NS_SUCCEEDED() test, * so you can scan for all cells in a row or column * by iterating through the appropriate indexes * until the returned aCell is null */ NS_IMETHOD GetCellAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell)=0; /** Get a cell at cellmap grid coordinates and associated data * A cell that spans across multiple cellmap locations will * be returned multiple times, once for each location it occupies * Examine the returned aStartRowIndex and aStartColIndex to see * if it is in the same layout column or layout row: * A "layout row" is all cells sharing the same top edge * A "layout column" is all cells sharing the same left edge * This is important to determine what to do when inserting or deleting a column or row * * @param aTable A table in the document * @param aRowIndex, aColIndex The 0-based cellmap indexes * returns values: * @param aCell The cell at this cellmap location * @param aStartRowIndex The row index where cell starts * @param aStartColIndex The col index where cell starts * @param aRowSpan May be 0 (to span down entire table) or number of cells spanned * @param aColSpan May be 0 (to span across entire table) or number of cells spanned * @param aActualRowSpan The actual number of cellmap locations (rows) spanned by the cell * @param aActualColSpan The actual number of cellmap locations (columns) spanned by the cell * @param aIsSelected * @param * * Note that this returns NS_TABLELAYOUT_CELL_NOT_FOUND * when a cell is not found at the given indexes (see note for GetCellAt()) */ NS_IMETHOD GetCellDataAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell, PRInt32& aStartRowIndex, PRInt32& aStartColIndex, PRInt32& aRowSpan, PRInt32& aColSpan, PRInt32& aActualRowSpan, PRInt32& aActualColSpan, PRBool& aIsSelected)=0; /** Get the first row element in a table * * @param aTableElement Any TABLE or child-of-table element in the document * @param aRowIndex The 0-based index of the row * * Returns: * @param aRow The row at the requested index * Returns null if there are no rows in table */ NS_IMETHOD GetFirstRow(nsIDOMElement* aTableElement, nsIDOMElement* &aRow)=0; /** Get the next row element starting the search from aTableElement * * @param aTableElement Any TR or child-of-TR element in the document * * Returns: * @param aRow The row to start search from * and the row returned from the search * Returns null if there isn't another row */ NS_IMETHOD GetNextRow(nsIDOMElement* aTableElement, nsIDOMElement* &aRow)=0; /** Preferred direction to search for neighboring cell * when trying to locate a cell to place caret in after * a table editing action. * Used for aDirection param in SetCaretAfterTableEdit */ enum { eNoSearch, ePreviousColumn, ePreviousRow }; /** Reset a 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 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 nsSetCaretAfterTableEdit stack-based * object to insure we reset the caret in a table-editing method. */ NS_IMETHOD SetCaretAfterTableEdit(nsIDOMElement* aTable, PRInt32 aRow, PRInt32 aCol, PRInt32 aDirection)=0; /** Examine the current selection and find * a selected TABLE, TD or TH, or TR element. * or return the parent TD or TH if selection is inside a table cell * Returns null if no table element is found. * * @param aTableElement The table element (table, row, or cell) returned * @param aTagName The tagname of returned element * Note that "td" will be returned if name is actually "th" * @param aIsSelected Tells if element returned is a selected element * (false if element is a parent cell of selection) */ NS_IMETHOD GetSelectedOrParentTableElement(nsIDOMElement* &aTableElement, nsString& aTagName, PRBool &aIsSelected)=0; }; #endif // nsITableEditor_h__