This can be useful when you have business logic that may depend on navigating in the Spread instance.
moveToNextCell: Moves to next cell (default action of Tab).
moveToPreviousCell: Moves to previous cell (default action of Shift + Tab).
selectNextControl: Selects spread.nextControl specified element or auto detected one if not set.
selectPreviousControl: Selects spread.previousControl specified element or auto detected one if not set.
moveToNextCellThenControl: Moves to next cell if the active cell is the last visible cell, then selects next control.
moveToPreviousCellThenControl: Moves to previous cell if the active cell is the first visible cell, then selects previous control.
Set the selected control using the nextControl and previousControl methods. For example:
Spread allows creating custom commands. For example:
Use the register method to set navigation keys and the corresponding actions. For example:
The arguments of register in order are:
name: The name of the command.
execute: The execution function of the command.
key: The unicode for the key.
ctrl: True if the action uses the Ctrl key; otherwise, false.
shift: True if the action uses the Shift key; otherwise, false.
alt: True if the action uses the Alt key; otherwise, false.
meta: True if the action uses the Command key on the Macintosh or the Windows key on Microsoft Windows; otherwise, false.
Use the hideSelection option to hide the selection when Spread loses the focus. For example:
window.onload = function () {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 1 });
initSpread(spread);
};
function initSpread(spread) {
var sheet = spread.getSheet(0);
spread.suspendPaint();
sheet.setRowCount(20);
sheet.setColumnCount(10);
sheet.addSpan(0, 0, 1, 7);
sheet.setValue(0, 0, "press the \'Tab\' or \'Shift + Tab\' key, the selction will move in accordance.");
for (var i = 1; i < 20; i += 3) {
for (var j = 1; j < 20; j += 3) {
sheet.setValue(i, j, "Test");
}
}
spread.resumePaint();
var commandManager = spread.commandManager();
_getElementById("preButton").addEventListener('click', _alertHandle);
_getElementById("nextButton").addEventListener('click', _alertHandle);
function _alertHandle() {
alert(this.value);
}
_getElementById("tabAction").addEventListener('change', _moveHandle);
_getElementById("shiftTabAction").addEventListener('change', _moveHandle);
function _moveHandle() {
var id = this.id, isShift = id.indexOf("shift") === 0,
value = parseInt(this.value, 10),
actions = GC.Spread.Sheets.Commands,
action;
switch (value) {
case 0:
action = isShift ? actions.moveToPreviousCell : actions.moveToNextCell;
break;
case 1:
action = isShift ? actions.selectPreviousControl : actions.selectNextControl;
break;
case 2:
action = isShift ? actions.moveToPreviousCellThenControl : actions.moveToNextCellThenControl;
break;
}
if (action) {
commandManager.register("customCommand" + new Date().valueOf(), action, GC.Spread.Commands.Key.tab, false, isShift, false, false);
}
}
_getElementById("nextControl").addEventListener('change', _handle);
_getElementById("preControl").addEventListener('change', _handle);
function _handle() {
var id = this.id, isPre = id.indexOf("pre") === 0,
value = this.value,
control = value ? document.getElementById(value) : undefined;
if (isPre) {
spread.previousControl(control);
} else {
spread.nextControl(control);
}
}
_getElementById("hideSelection").addEventListener('click', function () {
spread.options.hideSelection = this.checked;
});
function customSelectLeft(workbook, options) {
var sheet = workbook.getSheetFromName(options.sheetName);
var activeRowIndex = sheet.getActiveRowIndex();
var activeColIndex = sheet.getActiveColumnIndex();
var selNeedAdjust = getNeedAdjustSelection(sheet.getSelections(), activeRowIndex, activeColIndex);
var findFirstNotNullColIndex = function (sheet, fixRow, offset, stop) {
while (offset > stop) {
if (sheet.getValue(fixRow, offset) !== null) {
break;
}
offset--;
}
return offset;
}
var rangeChangeSmall = selNeedAdjust.col === activeColIndex && selNeedAdjust.colCount > 1 ? true : false;
var stopSearchIndex = rangeChangeSmall ? activeColIndex : 0;
var startSearchIndex = rangeChangeSmall ? selNeedAdjust.col + selNeedAdjust.colCount - 1 - 1 : selNeedAdjust.col - 1;
var findResult = findFirstNotNullColIndex(sheet, activeRowIndex, startSearchIndex, stopSearchIndex);
if (selNeedAdjust !== null && findResult >= 0) {
selNeedAdjust.colCount = rangeChangeSmall ? findResult - selNeedAdjust.col + 1 : selNeedAdjust.col - findResult + selNeedAdjust.colCount;
selNeedAdjust.col = rangeChangeSmall ? selNeedAdjust.col : findResult;
sheet.repaint();
}
}
function customSelectRight(workbook, options) {
var sheet = workbook.getSheetFromName(options.sheetName);
var activeRowIndex = sheet.getActiveRowIndex();
var activeColIndex = sheet.getActiveColumnIndex();
var sheetColCount = sheet.getColumnCount();
var selNeedAdjust = getNeedAdjustSelection(sheet.getSelections(), activeRowIndex, activeColIndex);
var findNextNotNullColIndex = function (sheet, fixRow, offset, stop) {
while (offset < stop) {
if (sheet.getValue(fixRow, offset) !== null) {
break;
}
offset++;
}
return offset;
}
var rangeChangeSmall = selNeedAdjust.col + selNeedAdjust.colCount - 1 === activeColIndex && selNeedAdjust.colCount > 1 ? true : false;
var stopSearchIndex = rangeChangeSmall ? activeColIndex : sheetColCount;
var startSearchIndex = rangeChangeSmall ? selNeedAdjust.col + 1 : selNeedAdjust.col + selNeedAdjust.colCount;
var findResult = findNextNotNullColIndex(sheet, activeRowIndex, startSearchIndex, stopSearchIndex);
if (selNeedAdjust !== null && findResult <= sheetColCount) {
selNeedAdjust.colCount = rangeChangeSmall ? selNeedAdjust.colCount + selNeedAdjust.col - findResult : findResult - selNeedAdjust.col + 1;
selNeedAdjust.col = rangeChangeSmall ? findResult : selNeedAdjust.col;
sheet.repaint();
}
}
function customSelectUp(workbook, options) {
var sheet = workbook.getSheetFromName(options.sheetName);
var activeRowIndex = sheet.getActiveRowIndex();
var activeColIndex = sheet.getActiveColumnIndex();
var selNeedAdjust = getNeedAdjustSelection(sheet.getSelections(), activeRowIndex, activeColIndex);
var findFirstNotNullRowIndex = function (sheet, fixCol, offset, stop) {
while (offset > stop) {
if (sheet.getValue(offset, fixCol) !== null) {
break;
}
offset--;
}
return offset;
}
var rangeChangeSmall = selNeedAdjust.row === activeRowIndex && selNeedAdjust.rowCount > 1 ? true : false;
var stopSearchIndex = rangeChangeSmall ? activeRowIndex : 0;
var startSearchIndex = rangeChangeSmall ? selNeedAdjust.row + selNeedAdjust.rowCount - 1 - 1 : selNeedAdjust.row - 1;
var findResult = findFirstNotNullRowIndex(sheet, activeColIndex, startSearchIndex, stopSearchIndex);
if (selNeedAdjust !== null && findResult >= 0) {
selNeedAdjust.rowCount = rangeChangeSmall ? findResult - selNeedAdjust.row + 1 : selNeedAdjust.row - findResult + selNeedAdjust.rowCount;
selNeedAdjust.row = rangeChangeSmall ? selNeedAdjust.row : findResult;
sheet.repaint();
}
}
function customSelectDown(workbook, options) {
var sheet = workbook.getSheetFromName(options.sheetName);
var activeRowIndex = sheet.getActiveRowIndex();
var activeColIndex = sheet.getActiveColumnIndex();
var sheetRowCount = sheet.getRowCount();
var selNeedAdjust = getNeedAdjustSelection(sheet.getSelections(), activeRowIndex, activeColIndex);
var findNextNotNullRowIndex = function (sheet, fixCol, offset, stop) {
while (offset < stop) {
if (sheet.getValue(offset, fixCol) !== null) {
break;
}
offset++;
}
return offset;
}
var rangeChangeSmall = selNeedAdjust.row + selNeedAdjust.rowCount - 1 === activeRowIndex && selNeedAdjust.rowCount > 1 ? true : false;
var stopSearchIndex = rangeChangeSmall ? activeRowIndex : sheetRowCount;
var startSearchIndex = rangeChangeSmall ? selNeedAdjust.row + 1 : selNeedAdjust.row + selNeedAdjust.rowCount;
var findResult = findNextNotNullRowIndex(sheet, activeColIndex, startSearchIndex, stopSearchIndex);
if (selNeedAdjust !== null && findResult <= sheetRowCount) {
selNeedAdjust.rowCount = rangeChangeSmall ? selNeedAdjust.rowCount + selNeedAdjust.row - findResult : findResult - selNeedAdjust.row + 1;
selNeedAdjust.row = rangeChangeSmall ? findResult : selNeedAdjust.row;
sheet.repaint();
}
}
function getNeedAdjustSelection(selections, rowIndex, colIndex) {
var sel = null;
for (var i = 0; i < selections.length; i++) {
if (selections[i].contains(rowIndex, colIndex)) {
sel = selections[i];
}
}
return sel;
}
commandManager.register("customSelectLeft", customSelectLeft);
commandManager.register("customSelectRight", customSelectRight);
commandManager.register("customSelectDown", customSelectDown);
commandManager.register("customSelectUp", customSelectUp);
commandManager.setShortcutKey(null, GC.Spread.Commands.Key.left, true, true, false, false);
commandManager.setShortcutKey("customSelectLeft", GC.Spread.Commands.Key.left, true, true, false, false);
commandManager.setShortcutKey(null, GC.Spread.Commands.Key.right, true, true, false, false);
commandManager.setShortcutKey("customSelectRight", GC.Spread.Commands.Key.right, true, true, false, false);
commandManager.setShortcutKey(null, GC.Spread.Commands.Key.down, true, true, false, false);
commandManager.setShortcutKey("customSelectDown", GC.Spread.Commands.Key.down, true, true, false, false);
commandManager.setShortcutKey(null, GC.Spread.Commands.Key.up, true, true, false, false);
commandManager.setShortcutKey("customSelectUp", GC.Spread.Commands.Key.up, true, true, false, false);
};
function _getElementById(id) {
return document.getElementById(id);
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css" href="$DEMOROOT$/en/purejs/node_modules/@mescius/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<script src="$DEMOROOT$/en/purejs/node_modules/@mescius/spread-sheets/dist/gc.spread.sheets.all.min.js" type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div class="sample-tutorial">
<div id="ss" class="sample-spreadsheets"></div>
<div class="options-container">
<p>Change the “Tab for:” field to “Next Control” then click the Spread instance to give it focus.</p>
<p>Hit the Tab key and observe that the focus moves to the “Previous Edit” text box on this page.</p>
<p>You can utilize this functionality to change what specific navigation keys do in Spread.</p>
<div class="option-row" style="margin-bottom: 10px;">
<input type="text" id="preEdit" placeholder="Previous Edit" title="Candidate previous control" />
<input type="button" id="preButton" title="Candidate previous control too" value="Previous Button" />
</div>
<div class="option-row">
<input type="text" id="nextEdit" placeholder="Next Edit" title="Candidate next control" />
<input type="button" id="nextButton" title="Candidate next control too" value="Next Button" />
</div>
<div class="option-row">
<label>Tab for:</label>
<select id="tabAction">
<option value="0" selected="selected">Next cell</option>
<option value="1">Next control</option>
<option value="2">Next cell then control</option>
</select>
<label class="colorLabel">This controls which navigation action happens when the user presses Tab.</label>
</div>
<div class="option-row">
<label>Shift + Tab for:</label>
<select id="shiftTabAction">
<option value="0" selected="selected">Previous cell</option>
<option value="1">Previous control</option>
<option value="2">Previous cell then control</option>
</select>
<label class="colorLabel">This controls which navigation action happens when the user presses Shift+Tab.</label>
</div>
<div class="option-row">
<label>Next control:</label>
<select id="nextControl">
<option value="" selected="selected">Not set (auto detect)</option>
<option value="nextEdit">Next Edit</option>
<option value="nextButton">Next Button</option>
</select>
<label class="colorLabel">This defines which control is the next control in relation to the Spread instance.</label>
</div>
<div class="option-row">
<label>Previous control:</label>
<select id="preControl">
<option value="" selected="selected">Not set (auto detect)</option>
<option value="preEdit">Previous Edit</option>
<option value="preButton">Previous Button</option>
</select>
<label class="colorLabel">This defines which control is the previous control in relation to the Spread instance.</label>
</div>
<div class="option-row">
<input type="checkbox" id="hideSelection" />
<label for="hideSelection">Hide Selection</label>
<label class="colorLabel">Checking this box will hide the selection in the Spread instance.</label>
</div>
</div>
</div>
</body>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
.sample-spreadsheets {
width: calc(100% - 280px);
height: 100%;
overflow: hidden;
float: left;
}
.options-container {
float: right;
width: 280px;
padding: 12px;
height: 100%;
box-sizing: border-box;
background: #fbfbfb;
overflow: auto;
}
.option-row {
font-size: 14px;
padding: 5px;
margin-top: 10px;
}
.options-toggle {
display: none;
}
input, select {
padding: 4px 6px;
margin: 4px 0;
width: 100%;
box-sizing: border-box;
}
input[type=checkbox] {
width: auto;
}
.colorLabel {
width: auto;
color: #606060;
display: block;
}
.demo-options {
margin-top: 5px;
}
p{
padding:2px 10px;
background-color:#F4F8EB;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
