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accessible/tests/mochitest/grid.js@6474c204b198 (annotated)

accessible/tests/mochitest/grid.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	const nsIDOMKeyEvent = Components.interfaces.nsIDOMKeyEvent;
michael@0	2
michael@0	3	/**
michael@0	4	* Create grid object based on HTML table.
michael@0	5	*/
michael@0	6	function grid(aTableIdentifier)
michael@0	7	{
michael@0	8	this.getRowCount = function getRowCount()
michael@0	9	{
michael@0	10	return this.table.rows.length - (this.table.tHead ? 1 : 0);
michael@0	11	}
michael@0	12	this.getColsCount = function getColsCount()
michael@0	13	{
michael@0	14	return this.table.rows[0].cells.length;
michael@0	15	}
michael@0	16
michael@0	17	this.getRowAtIndex = function getRowAtIndex(aIndex)
michael@0	18	{
michael@0	19	return this.table.rows[this.table.tHead ? aIndex + 1 : aIndex];
michael@0	20	}
michael@0	21
michael@0	22	this.getMaxIndex = function getMaxIndex()
michael@0	23	{
michael@0	24	return this.getRowCount() * this.getColsCount() - 1;
michael@0	25	}
michael@0	26
michael@0	27	this.getCellAtIndex = function getCellAtIndex(aIndex)
michael@0	28	{
michael@0	29	var rowCount = this.getRowCount();
michael@0	30	var colsCount = this.getColsCount();
michael@0	31
michael@0	32	var rowIdx = Math.floor(aIndex / colsCount);
michael@0	33	var colIdx = aIndex % colsCount;
michael@0	34
michael@0	35	var row = this.getRowAtIndex(rowIdx);
michael@0	36	return row.cells[colIdx];
michael@0	37	}
michael@0	38
michael@0	39	this.getIndexByCell = function getIndexByCell(aCell)
michael@0	40	{
michael@0	41	var colIdx = aCell.cellIndex;
michael@0	42
michael@0	43	var rowIdx = aCell.parentNode.rowIndex;
michael@0	44	if (this.table.tHead)
michael@0	45	rowIdx -= 1;
michael@0	46
michael@0	47	var colsCount = this.getColsCount();
michael@0	48	return rowIdx * colsCount + colIdx;
michael@0	49	}
michael@0	50
michael@0	51	this.getCurrentCell = function getCurrentCell()
michael@0	52	{
michael@0	53	var rowCount = this.table.rows.length;
michael@0	54	var colsCount = this.getColsCount();
michael@0	55	for (var rowIdx = 0; rowIdx < rowCount; rowIdx++) {
michael@0	56	for (var colIdx = 0; colIdx < colsCount; colIdx++) {
michael@0	57	var cell = this.table.rows[rowIdx].cells[colIdx];
michael@0	58	if (cell.hasAttribute("tabindex"))
michael@0	59	return cell;
michael@0	60	}
michael@0	61	}
michael@0	62	return null;
michael@0	63	}
michael@0	64
michael@0	65	this.initGrid = function initGrid()
michael@0	66	{
michael@0	67	this.table.addEventListener("keypress", this, false);
michael@0	68	this.table.addEventListener("click", this, false);
michael@0	69	}
michael@0	70
michael@0	71	this.handleEvent = function handleEvent(aEvent)
michael@0	72	{
michael@0	73	if (aEvent instanceof nsIDOMKeyEvent)
michael@0	74	this.handleKeyEvent(aEvent);
michael@0	75	else
michael@0	76	this.handleClickEvent(aEvent);
michael@0	77	}
michael@0	78
michael@0	79	this.handleKeyEvent = function handleKeyEvent(aEvent)
michael@0	80	{
michael@0	81	if (aEvent.target.localName != "td")
michael@0	82	return;
michael@0	83
michael@0	84	var cell = aEvent.target;
michael@0	85	switch(aEvent.keyCode) {
michael@0	86	case nsIDOMKeyEvent.DOM_VK_UP:
michael@0	87	var colsCount = this.getColsCount();
michael@0	88	var idx = this.getIndexByCell(cell);
michael@0	89	var upidx = idx - colsCount;
michael@0	90	if (upidx >= 0) {
michael@0	91	cell.removeAttribute("tabindex");
michael@0	92	var upcell = this.getCellAtIndex(upidx);
michael@0	93	upcell.setAttribute("tabindex", "0");
michael@0	94	upcell.focus();
michael@0	95	}
michael@0	96	break;
michael@0	97
michael@0	98	case nsIDOMKeyEvent.DOM_VK_DOWN:
michael@0	99	var colsCount = this.getColsCount();
michael@0	100	var idx = this.getIndexByCell(cell);
michael@0	101	var downidx = idx + colsCount;
michael@0	102	if (downidx <= this.getMaxIndex()) {
michael@0	103	cell.removeAttribute("tabindex");
michael@0	104	var downcell = this.getCellAtIndex(downidx);
michael@0	105	downcell.setAttribute("tabindex", "0");
michael@0	106	downcell.focus();
michael@0	107	}
michael@0	108	break;
michael@0	109
michael@0	110	case nsIDOMKeyEvent.DOM_VK_LEFT:
michael@0	111	var idx = this.getIndexByCell(cell);
michael@0	112	if (idx > 0) {
michael@0	113	cell.removeAttribute("tabindex");
michael@0	114	var prevcell = this.getCellAtIndex(idx - 1);
michael@0	115	prevcell.setAttribute("tabindex", "0");
michael@0	116	prevcell.focus();
michael@0	117	}
michael@0	118	break;
michael@0	119
michael@0	120	case nsIDOMKeyEvent.DOM_VK_RIGHT:
michael@0	121	var idx = this.getIndexByCell(cell);
michael@0	122	if (idx < this.getMaxIndex()) {
michael@0	123	cell.removeAttribute("tabindex");
michael@0	124	var nextcell = this.getCellAtIndex(idx + 1);
michael@0	125	nextcell.setAttribute("tabindex", "0");
michael@0	126	nextcell.focus();
michael@0	127	}
michael@0	128	break;
michael@0	129	}
michael@0	130	}
michael@0	131
michael@0	132	this.handleClickEvent = function handleClickEvent(aEvent)
michael@0	133	{
michael@0	134	if (aEvent.target.localName != "td")
michael@0	135	return;
michael@0	136
michael@0	137	var curCell = this.getCurrentCell();
michael@0	138	var cell = aEvent.target;
michael@0	139
michael@0	140	if (cell != curCell) {
michael@0	141	curCell.removeAttribute("tabindex");
michael@0	142	cell.setAttribute("tabindex", "0");
michael@0	143	cell.focus();
michael@0	144	}
michael@0	145	}
michael@0	146
michael@0	147	this.table = getNode(aTableIdentifier);
michael@0	148	this.initGrid();
michael@0	149	}