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6bba243c2c
HTMLEditor::GetCellIndexes() is an XPCOM method and used a lot internally. So, we need alternative way to retrieve indexes of a cell without virtual calls. In a lot of places, receiving indexes with 2 int32_t variables causes the code messy and that causes making it harder to understand which are index for same cell and where they come from. So, making both of them stored one variable makes the callers simpler. Therefore, this patch creates CellIndexes stack class to get and store the result simply. Then, this makes all callers of GetCellIndexes() use this new class and makes GetCellIndexes() also use this new class. FYI: This patch does NOT put ErrorResult instances in small block scope as far as possible. The reason is, I see its destructor in profile sometimes. I don't think that we should use nsresult& instead of ErrorResult& only for this performance reason, but I think that creating each instance in loops does not make sense. Differential Revision: https://phabricator.services.mozilla.com/D3849 --HG-- extra : moz-landing-system : lando
328 lines
15 KiB
Plaintext
328 lines
15 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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webidl Element;
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webidl Node;
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webidl Range;
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[scriptable, builtinclass, uuid(4805e684-49b9-11d3-9ce4-ed60bd6cb5bc)]
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interface nsITableEditor : nsISupports
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{
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const short eNoSearch = 0;
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const short ePreviousColumn = 1;
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const short ePreviousRow = 2;
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/* ------------ Table editing Methods -------------- */
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/** Insert table methods
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* Insert relative to the selected cell or the
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* cell enclosing the selection anchor
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* The selection is collapsed and is left in the new cell
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* at the same row,col location as the original anchor cell
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*
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* @param aNumber Number of items to insert
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* @param aAfter If TRUE, insert after the current cell,
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* else insert before current cell
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*/
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void insertTableCell(in long aNumber, in boolean aAfter);
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void insertTableColumn(in long aNumber, in boolean aAfter);
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void insertTableRow(in long aNumber, in boolean aAfter);
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/** Delete table methods
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* Delete starting at the selected cell or the
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* cell (or table) enclosing the selection anchor
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* The selection is collapsed and is left in the
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* cell at the same row,col location as
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* the previous selection anchor, if possible,
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* else in the closest neigboring cell
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*
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* @param aNumber Number of items to insert/delete
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*/
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void deleteTable();
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/** Delete just the cell contents
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* This is what should happen when Delete key is used
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* for selected cells, to minimize upsetting the table layout
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*/
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void deleteTableCellContents();
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/** Delete cell elements as well as contents
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* @param aNumber Number of contiguous cells, rows, or columns
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*
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* When there are more than 1 selected cells, aNumber is ignored.
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* For Delete Rows or Columns, the complete columns or rows are
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* determined by the selected cells. E.g., to delete 2 complete rows,
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* user simply selects a cell in each, and they don't
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* have to be contiguous.
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*/
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void deleteTableCell(in long aNumber);
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void deleteTableColumn(in long aNumber);
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void deleteTableRow(in long aNumber);
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/** Table Selection methods
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* Selecting a row or column actually
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* selects all cells (not TR in the case of rows)
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*/
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void selectTableCell();
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/** Select a rectangular block of cells:
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* all cells falling within the row/column index of aStartCell
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* to through the row/column index of the aEndCell
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* aStartCell can be any location relative to aEndCell,
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* as long as they are in the same table
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* @param aStartCell starting cell in block
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* @param aEndCell ending cell in block
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*/
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void selectBlockOfCells(in Element aStartCell,
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in Element aEndCell);
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void selectTableRow();
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void selectTableColumn();
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void selectTable();
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void selectAllTableCells();
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/** Create a new TD or TH element, the opposite type of the supplied aSourceCell
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* 1. Copy all attributes from aSourceCell to the new cell
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* 2. Move all contents of aSourceCell to the new cell
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* 3. Replace aSourceCell in the table with the new cell
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*
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* @param aSourceCell The cell to be replaced
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* @return The new cell that replaces aSourceCell
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*/
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Element switchTableCellHeaderType(in Element aSourceCell);
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/** Merges contents of all selected cells
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* for selected cells that are adjacent,
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* this will result in a larger cell with appropriate
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* rowspan and colspan, and original cells are deleted
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* The resulting cell is in the location of the
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* cell at the upper-left corner of the adjacent
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* block of selected cells
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*
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* @param aMergeNonContiguousContents:
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* If true:
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* Non-contiguous cells are not deleted,
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* but their contents are still moved
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* to the upper-left cell
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* If false: contiguous cells are ignored
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*
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* If there are no selected cells,
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* and selection or caret is in a cell,
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* that cell and the one to the right
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* are merged
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*/
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void joinTableCells(in boolean aMergeNonContiguousContents);
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/** Split a cell that has rowspan and/or colspan > 0
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* into cells such that all new cells have
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* rowspan = 1 and colspan = 1
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* All of the contents are not touched --
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* they will appear to be in the upper-left cell
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*/
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void splitTableCell();
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/** Scan through all rows and add cells as needed so
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* all locations in the cellmap are occupied.
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* Used after inserting single cells or pasting
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* a collection of cells that extend past the
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* previous size of the table
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* If aTable is null, it uses table enclosing the selection anchor
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* This doesn't doesn't change the selection,
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* thus it can be used to fixup all tables
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* in a page independent of the selection
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*/
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void normalizeTable(in Element aTable);
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/**
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* getCellIndexes() computes row index and column index of a table cell.
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* Note that this depends on layout information. Therefore, all pending
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* layout should've been flushed before calling this.
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*
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* @param aCellElement If not null, this computes indexes of the cell.
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* If null, this computes indexes of a cell which
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* contains anchor of Selection.
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* @param aRowIndex Must be an object, whose .value will be set
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* to row index of the cell. 0 is the first row.
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* If rowspan is set to 2 or more, the start
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* row index is used.
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* @param aColumnIndex Must be an object, whose .value will be set
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* to column index of the cell. 0 is the first
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* column. If colspan is set to 2 or more, the
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* start column index is used.
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*/
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void getCellIndexes(in Element aCellElement,
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out long aRowIndex, out long aColumnIndex);
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/** Get the number of rows and columns in a table from the layout's cellmap
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* If aTable is null, it will try to find enclosing table of selection ancho
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* Note that all rows in table will not have this many because of
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* ROWSPAN effects or if table is not "rectangular" (has short rows)
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*/
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void getTableSize(in Element aTable,
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out long aRowCount, out long aColCount);
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/** Get a cell element at cellmap grid coordinates
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* A cell that spans across multiple cellmap locations will
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* be returned multiple times, once for each location it occupies
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*
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* @param aTable A table in the document
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* @param aRowIndex, aColIndex The 0-based cellmap indexes
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*
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* (in C++ returns: NS_EDITOR_ELEMENT_NOT_FOUND if an element is not found
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* passes NS_SUCCEEDED macro)
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*
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* You can scan for all cells in a row or column
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* by iterating through the appropriate indexes
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* until the returned aCell is null
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*/
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Element getCellAt(in Element aTable,
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in long aRowIndex, in long aColIndex);
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/** Get a cell at cellmap grid coordinates and associated data
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* A cell that spans across multiple cellmap locations will
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* be returned multiple times, once for each location it occupies
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* Examine the returned aStartRowIndex and aStartColIndex to see
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* if it is in the same layout column or layout row:
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* A "layout row" is all cells sharing the same top edge
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* A "layout column" is all cells sharing the same left edge
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* This is important to determine what to do when inserting or deleting a column or row
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*
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* @param aTable A table in the document
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* @param aRowIndex, aColIndex The 0-based cellmap indexes
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* returns values:
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* @param aCell The cell at this cellmap location
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* @param aStartRowIndex The row index where cell starts
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* @param aStartColIndex The col index where cell starts
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* @param aRowSpan May be 0 (to span down entire table) or number of cells spanned
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* @param aColSpan May be 0 (to span across entire table) or number of cells spanned
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* @param aActualRowSpan The actual number of cellmap locations (rows) spanned by the cell
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* @param aActualColSpan The actual number of cellmap locations (columns) spanned by the cell
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* @param aIsSelected
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* @param
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*
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* (in C++ returns: NS_EDITOR_ELEMENT_NOT_FOUND if an element is not found
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* passes NS_SUCCEEDED macro)
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*/
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void getCellDataAt(in Element aTable,
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in long aRowIndex, in long aColIndex,
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out Element aCell,
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out long aStartRowIndex, out long aStartColIndex,
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out long aRowSpan, out long aColSpan,
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out long aActualRowSpan, out long aActualColSpan,
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out boolean aIsSelected);
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/**
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* getFirstRow() returns first <tr> element in a <table> element.
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*
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* @param aTableOrElementInTable If a <table> element, returns its first
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* <tr> element.
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* If another element, looks for nearest
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* ancestor <table> element first. Then,
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* return its first <tr> element.
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* @return <tr> element in the <table> element.
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* If <table> element is not found, this
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* throws an exception.
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* If there is a <table> element but it
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* does not have <tr> elements, returns
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* null without throwing exception.
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* Note that this may return anonymous <tr>
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* element if <table> has one or more cells
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* but <tr> element is not in the source.
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*/
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Element getFirstRow(in Element aTableElement);
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/** Preferred direction to search for neighboring cell
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* when trying to locate a cell to place caret in after
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* a table editing action.
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* Used for aDirection param in SetSelectionAfterTableEdit
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*/
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/** Examine the current selection and find
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* a selected TABLE, TD or TH, or TR element.
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* or return the parent TD or TH if selection is inside a table cell
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* Returns null if no table element is found.
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*
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* @param aTagName The tagname of returned element
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* Note that "td" will be returned if name
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* is actually "th"
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* @param aCount How many table elements were selected
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* This tells us if we have multiple cells selected
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* (0 if element is a parent cell of selection)
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* @return The table element (table, row, or first selected cell)
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*
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*/
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Element getSelectedOrParentTableElement(out AString aTagName, out long aCount);
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/** Generally used after GetSelectedOrParentTableElement
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* to test if selected cells are complete rows or columns
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*
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* @param aElement Any table or cell element or any element
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* inside a table
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* Used to get enclosing table.
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* If null, selection's anchorNode is used
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*
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* @return
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* 0 aCellElement was not a cell
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* (returned result = NS_ERROR_FAILURE)
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* TableSelection::Cell There are 1 or more cells selected but
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* complete rows or columns are not selected
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* TableSelection::Row All cells are in 1 or more rows
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* and in each row, all cells selected
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* Note: This is the value if all rows
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* (thus all cells) are selected
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* TableSelection::Column All cells are in 1 or more columns
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* and in each column, all cells are selected
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*/
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uint32_t getSelectedCellsType(in Element aElement);
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/** Get first selected element from first selection range.
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* (If multiple cells were selected this is the first in the order they were selected)
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* Assumes cell-selection model where each cell
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* is in a separate range (selection parent node is table row)
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* @param aCell [OUT] Selected cell or null if ranges don't contain
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* cell selections
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* @param aRange [OUT] Optional: if not null, return the selection range
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* associated with the cell
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* Returns the DOM cell element
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* (in C++: returns NS_EDITOR_ELEMENT_NOT_FOUND if an element is not found
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* passes NS_SUCCEEDED macro)
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*/
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Element getFirstSelectedCell(out Range aRange);
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/** Get first selected element in the table
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* This is the upper-left-most selected cell in table,
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* ignoring the order that the user selected them (order in the selection ranges)
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* Assumes cell-selection model where each cell
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* is in a separate range (selection parent node is table row)
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* @param aCell Selected cell or null if ranges don't contain
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* cell selections
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* @param aRowIndex Optional: if not null, return row index of 1st cell
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* @param aColIndex Optional: if not null, return column index of 1st cell
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*
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* Returns the DOM cell element
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* (in C++: returns NS_EDITOR_ELEMENT_NOT_FOUND if an element is not found
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* passes NS_SUCCEEDED macro)
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*/
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Element getFirstSelectedCellInTable(out long aRowIndex, out long aColIndex);
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/** Get next selected cell element from first selection range.
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* Assumes cell-selection model where each cell
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* is in a separate range (selection parent node is table row)
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* Always call GetFirstSelectedCell() to initialize stored index of "next" cell
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* @param aCell Selected cell or null if no more selected cells
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* or ranges don't contain cell selections
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* @param aRange Optional: if not null, return the selection range
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* associated with the cell
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*
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* Returns the DOM cell element
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* (in C++: returns NS_EDITOR_ELEMENT_NOT_FOUND if an element is not found
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* passes NS_SUCCEEDED macro)
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*/
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Element getNextSelectedCell(out Range aRange);
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};
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