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slick.grid.js
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slick.grid.js
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/**
* @license
* (c) 2009-2010 Michael Leibman
* michael{dot}leibman{at}gmail{dot}com
* http://github.com/mleibman/slickgrid
* Distributed under MIT license.
* All rights reserved.
*
* SlickGrid v2.0 alpha
*
* NOTES:
* Cell/row DOM manipulations are done directly bypassing jQuery's DOM manipulation methods.
* This increases the speed dramatically, but can only be done safely because there are no event handlers
* or data associated with any cell/row DOM nodes. Cell editors must make sure they implement .destroy()
* and do proper cleanup.
*/
// make sure required JavaScript modules are loaded
if (typeof jQuery === "undefined") {
throw "SlickGrid requires jquery module to be loaded";
}
if (!jQuery.fn.drag) {
throw "SlickGrid requires jquery.event.drag module to be loaded";
}
if (typeof Slick === "undefined") {
throw "slick.core.js not loaded";
}
(function($) {
// Slick.Grid
$.extend(true, window, {
Slick: {
Grid: SlickGrid
}
});
var scrollbarDimensions; // shared across all grids on this page
//////////////////////////////////////////////////////////////////////////////////////////////
// SlickGrid class implementation (available as Slick.Grid)
/**
* @constructor
* @param {Node} container Container node to create the grid in.
* @param {Array,Object} data An array of objects for databinding.
* @param {Array} columns An array of column definitions.
* @param {Object} options Grid options.
**/
function SlickGrid(container,data,columns,options) {
/// <summary>
/// Create and manage virtual grid in the specified $container,
/// connecting it to the specified data source. Data is presented
/// as a grid with the specified columns and data.length rows.
/// Options alter behaviour of the grid.
/// </summary>
// settings
var defaults = {
headerHeight: 25,
rowHeight: 25,
defaultColumnWidth: 80,
enableAddRow: false,
leaveSpaceForNewRows: false,
editable: false,
autoEdit: true,
enableCellNavigation: true,
enableCellRangeSelection: false,
enableColumnReorder: true,
asyncEditorLoading: false,
asyncEditorLoadDelay: 100,
forceFitColumns: false,
enableAsyncPostRender: false,
asyncPostRenderDelay: 60,
autoHeight: false,
editorLock: Slick.GlobalEditorLock,
showHeaderRow: false,
headerRowHeight: 25,
showTopPanel: false,
topPanelHeight: 25,
syncColumnCellResize: false,
formatterFactory: null,
editorFactory: null,
cellFlashingCssClass: "flashing",
selectedCellCssClass: "selected",
multiSelect: true
},
gridData;
var columnDefaults = {
name: "",
resizable: true,
sortable: false,
minWidth: 30,
rerenderOnResize: false,
unselectable: false
};
// scroller
var maxSupportedCssHeight; // browser's breaking point
var th; // virtual height
var h; // real scrollable height
var ph; // page height
var n; // number of pages
var cj; // "jumpiness" coefficient
var page = 0; // current page
var offset = 0; // current page offset
var scrollDir = 1;
// private
var $container;
var uid = "slickgrid_" + Math.round(1000000 * Math.random());
var self = this;
var $headerScroller;
var $headers;
var $headerRow, $headerRowScroller;
var $topPanelScroller;
var $topPanel;
var $viewport;
var $canvas;
var $style;
var stylesheet;
var viewportH, viewportW;
var viewportHasHScroll;
var headerColumnWidthDiff, headerColumnHeightDiff, rowWidthDiff, cellWidthDiff, cellHeightDiff; // padding+border
var absoluteColumnMinWidth;
var activeRow, activeCell;
var activeCellNode = null;
var currentEditor = null;
var serializedEditorValue;
var editController;
var rowsCache = {};
var renderedRows = 0;
var numVisibleRows;
var prevScrollTop = 0;
var scrollTop = 0;
var lastRenderedScrollTop = 0;
var prevScrollLeft = 0;
var avgRowRenderTime = 10;
var selectionModel;
var selectedRows = [];
var plugins = [];
var cellCssClasses = {};
var columnsById = {};
var sortColumnId;
var sortAsc = true;
// async call handles
var h_editorLoader = null;
var h_render = null;
var h_postrender = null;
var postProcessedRows = {};
var postProcessToRow = null;
var postProcessFromRow = null;
// perf counters
var counter_rows_rendered = 0;
var counter_rows_removed = 0;
//////////////////////////////////////////////////////////////////////////////////////////////
// Initialization
function init() {
/// <summary>
/// Initialize 'this' (self) instance of a SlickGrid.
/// This function is called by the constructor.
/// </summary>
$container = $(container);
gridData = data;
maxSupportedCssHeight = getMaxSupportedCssHeight();
scrollbarDimensions = scrollbarDimensions || measureScrollbar(); // skip measurement if already have dimensions
options = $.extend({},defaults,options);
columnDefaults.width = options.defaultColumnWidth;
// validate loaded JavaScript modules against requested options
if (options.enableColumnReorder && !$.fn.sortable) {
throw new Error("SlickGrid's \"enableColumnReorder = true\" option requires jquery-ui.sortable module to be loaded");
}
editController = {
"commitCurrentEdit": commitCurrentEdit,
"cancelCurrentEdit": cancelCurrentEdit
};
$container
.empty()
.attr("tabIndex",0)
.attr("hideFocus",true)
.css("overflow","hidden")
.css("outline",0)
.addClass(uid)
.addClass("ui-widget");
// set up a positioning container if needed
if (!/relative|absolute|fixed/.test($container.css("position")))
$container.css("position","relative");
$headerScroller = $("<div class='slick-header ui-state-default' style='overflow:hidden;position:relative;' />").appendTo($container);
$headers = $("<div class='slick-header-columns' style='width:100000px; left:-10000px' />").appendTo($headerScroller);
$headerRowScroller = $("<div class='slick-headerrow ui-state-default' style='overflow:hidden;position:relative;' />").appendTo($container);
$headerRow = $("<div class='slick-headerrow-columns' style='width:100000px;' />").appendTo($headerRowScroller);
$topPanelScroller = $("<div class='slick-top-panel-scroller ui-state-default' style='overflow:hidden;position:relative;' />").appendTo($container);
$topPanel = $("<div class='slick-top-panel' style='width:100000px' />").appendTo($topPanelScroller);
if (!options.showTopPanel) {
$topPanelScroller.hide();
}
if (!options.showHeaderRow) {
$headerRowScroller.hide();
}
$viewport = $("<div class='slick-viewport' tabIndex='0' hideFocus style='width:100%;overflow-x:auto;outline:0;position:relative;overflow-y:auto;'>").appendTo($container);
$canvas = $("<div class='grid-canvas' tabIndex='0' hideFocus />").appendTo($viewport);
// header columns and cells may have different padding/border skewing width calculations (box-sizing, hello?)
// calculate the diff so we can set consistent sizes
measureCellPaddingAndBorder();
// for usability reasons, all text selection in SlickGrid is disabled
// with the exception of input and textarea elements (selection must
// be enabled there so that editors work as expected); note that
// selection in grid cells (grid body) is already unavailable in
// all browsers except IE
disableSelection($headers); // disable all text selection in header (including input and textarea)
$viewport.bind("selectstart.ui", function (event) { return $(event.target).is("input,textarea"); }); // disable text selection in grid cells except in input and textarea elements (this is IE-specific, because selectstart event will only fire in IE)
createColumnHeaders();
setupColumnSort();
createCssRules();
viewportW = parseFloat($.css($container[0], "width", true));
resizeAndRender();
bindAncestorScrollEvents();
$viewport.bind("scroll.slickgrid", handleScroll);
$container.bind("resize.slickgrid", resizeAndRender);
$headerScroller
.bind("contextmenu.slickgrid", handleHeaderContextMenu)
.bind("click.slickgrid", handleHeaderClick);
$canvas
.bind("keydown.slickgrid", handleKeyDown)
.bind("click.slickgrid", handleClick)
.bind("dblclick.slickgrid", handleDblClick)
.bind("contextmenu.slickgrid", handleContextMenu)
.bind("draginit", handleDragInit)
.bind("dragstart", handleDragStart)
.bind("drag", handleDrag)
.bind("dragend", handleDragEnd);
$canvas.delegate(".slick-cell", "mouseenter", handleMouseEnter);
$canvas.delegate(".slick-cell", "mouseleave", handleMouseLeave);
}
function registerPlugin(plugin) {
plugins.unshift(plugin);
plugin.init(self);
}
function unregisterPlugin(plugin) {
for (var i = plugins.length; i >= 0; i--) {
if (plugins[i] === plugin) {
if (plugins[i].destroy) {
plugins[i].destroy();
}
plugins.splice(i, 1);
break;
}
}
}
function setSelectionModel(model) {
if (selectionModel) {
selectionModel.onSelectedRangesChanged.unsubscribe(handleSelectedRangesChanged);
if (selectionModel.destroy) {
selectionModel.destroy();
}
}
selectionModel = model;
selectionModel.init(self);
selectionModel.onSelectedRangesChanged.subscribe(handleSelectedRangesChanged);
}
function getSelectionModel() {
return selectionModel;
}
function getCanvasNode() {
return $canvas[0];
}
function measureScrollbar() {
/// <summary>
/// Measure width of a vertical scrollbar
/// and height of a horizontal scrollbar.
/// </summary
/// <returns>
/// { width: pixelWidth, height: pixelHeight }
/// </returns>
var $c = $("<div style='position:absolute; top:-10000px; left:-10000px; width:100px; height:100px; overflow:scroll;'></div>").appendTo("body");
var dim = { width: $c.width() - $c[0].clientWidth, height: $c.height() - $c[0].clientHeight };
$c.remove();
return dim;
}
function setCanvasWidth(width) {
$canvas.width(width);
viewportHasHScroll = (width > viewportW - scrollbarDimensions.width);
}
function disableSelection($target) {
/// <summary>
/// Disable text selection (using mouse) in
/// the specified target.
/// </summary
if ($target && $target.jquery) {
$target.attr('unselectable', 'on').css('MozUserSelect', 'none').bind('selectstart.ui', function() { return false; }); // from jquery:ui.core.js 1.7.2
}
}
function getMaxSupportedCssHeight() {
var increment = 1000000;
var supportedHeight = 0;
// FF reports the height back but still renders blank after ~6M px
var testUpTo = ($.browser.mozilla) ? 5000000 : 1000000000;
var div = $("<div style='display:none' />").appendTo(document.body);
while (supportedHeight <= testUpTo) {
div.css("height", supportedHeight + increment);
if (div.height() !== supportedHeight + increment)
break;
else
supportedHeight += increment;
}
div.remove();
return supportedHeight;
}
// TODO: this is static. need to handle page mutation.
function bindAncestorScrollEvents() {
var elem = $canvas[0];
while ((elem = elem.parentNode) != document.body) {
// bind to scroll containers only
if (elem == $viewport[0] || elem.scrollWidth != elem.clientWidth || elem.scrollHeight != elem.clientHeight)
$(elem).bind("scroll.slickgrid", handleActiveCellPositionChange);
}
}
function unbindAncestorScrollEvents() {
$canvas.parents().unbind("scroll.slickgrid");
}
function updateColumnHeader(columnId, title, toolTip) {
var idx = getColumnIndex(columnId);
var $header = $headers.children().eq(idx);
if ($header) {
columns[idx].name = title;
columns[idx].toolTip = toolTip;
$header
.attr("title", toolTip || title || "")
.children().eq(0).html(title);
}
}
function getHeaderRow() {
return $headerRow[0];
}
function getHeaderRowColumn(columnId) {
var idx = getColumnIndex(columnId);
var $header = $headerRow.children().eq(idx);
return $header && $header[0];
}
function createColumnHeaders() {
var i;
function hoverBegin() {
$(this).addClass("ui-state-hover");
}
function hoverEnd() {
$(this).removeClass("ui-state-hover");
}
$headers.empty();
$headerRow.empty();
columnsById = {};
for (i = 0; i < columns.length; i++) {
var m = columns[i] = $.extend({},columnDefaults,columns[i]);
columnsById[m.id] = i;
var header = $("<div class='ui-state-default slick-header-column' id='" + uid + m.id + "' />")
.html("<span class='slick-column-name'>" + m.name + "</span>")
.width((m.currentWidth || m.width) - headerColumnWidthDiff)
.attr("title", m.toolTip || m.name || "")
.data("fieldId", m.id)
.appendTo($headers);
if (options.enableColumnReorder || m.sortable) {
header.hover(hoverBegin, hoverEnd);
}
if (m.sortable) {
header.append("<span class='slick-sort-indicator' />");
}
if (options.showHeaderRow) {
$("<div class='ui-state-default slick-headerrow-column c" + i + "'></div>").appendTo($headerRow);
}
}
setSortColumn(sortColumnId,sortAsc);
setupColumnResize();
if (options.enableColumnReorder) {
setupColumnReorder();
}
}
function setupColumnSort() {
$headers.click(function(e) {
if ($(e.target).hasClass("slick-resizable-handle")) {
return;
}
var $col = $(e.target).closest(".slick-header-column");
if (!$col.length)
return;
var column = columns[getSiblingIndex($col[0])];
if (column.sortable) {
if (!getEditorLock().commitCurrentEdit())
return;
if (column.id === sortColumnId) {
sortAsc = !sortAsc;
}
else {
sortColumnId = column.id;
sortAsc = true;
}
setSortColumn(sortColumnId,sortAsc);
trigger(self.onSort, {sortCol:column,sortAsc:sortAsc});
}
});
}
function setupColumnReorder() {
$headers.sortable({
containment: "parent",
axis: "x",
cursor: "default",
tolerance: "intersection",
helper: "clone",
placeholder: "slick-sortable-placeholder ui-state-default slick-header-column",
forcePlaceholderSize: true,
start: function(e, ui) { $(ui.helper).addClass("slick-header-column-active"); },
beforeStop: function(e, ui) { $(ui.helper).removeClass("slick-header-column-active"); },
stop: function(e) {
if (!getEditorLock().commitCurrentEdit()) {
$(this).sortable("cancel");
return;
}
var reorderedIds = $headers.sortable("toArray");
var reorderedColumns = [];
for (var i=0; i<reorderedIds.length; i++) {
reorderedColumns.push(columns[getColumnIndex(reorderedIds[i].replace(uid,""))]);
}
setColumns(reorderedColumns);
trigger(self.onColumnsReordered, {});
e.stopPropagation();
setupColumnResize();
}
});
}
function setupColumnResize() {
var $col, j, c, pageX, columnElements, minPageX, maxPageX, firstResizable, lastResizable, originalCanvasWidth;
columnElements = $headers.children();
columnElements.find(".slick-resizable-handle").remove();
columnElements.each(function(i,e) {
if (columns[i].resizable) {
if (firstResizable === undefined) { firstResizable = i; }
lastResizable = i;
}
});
columnElements.each(function(i,e) {
if ((firstResizable !== undefined && i < firstResizable) || (options.forceFitColumns && i >= lastResizable)) { return; }
$col = $(e);
$("<div class='slick-resizable-handle' />")
.appendTo(e)
.bind("dragstart", function(e,dd) {
if (!getEditorLock().commitCurrentEdit()) { return false; }
pageX = e.pageX;
$(this).parent().addClass("slick-header-column-active");
var shrinkLeewayOnRight = null, stretchLeewayOnRight = null;
// lock each column's width option to current width
columnElements.each(function(i,e) { columns[i].previousWidth = $(e).outerWidth(); });
if (options.forceFitColumns) {
shrinkLeewayOnRight = 0;
stretchLeewayOnRight = 0;
// colums on right affect maxPageX/minPageX
for (j = i + 1; j < columnElements.length; j++) {
c = columns[j];
if (c.resizable) {
if (stretchLeewayOnRight !== null) {
if (c.maxWidth) {
stretchLeewayOnRight += c.maxWidth - c.previousWidth;
}
else {
stretchLeewayOnRight = null;
}
}
shrinkLeewayOnRight += c.previousWidth - Math.max(c.minWidth || 0, absoluteColumnMinWidth);
}
}
}
var shrinkLeewayOnLeft = 0, stretchLeewayOnLeft = 0;
for (j = 0; j <= i; j++) {
// columns on left only affect minPageX
c = columns[j];
if (c.resizable) {
if (stretchLeewayOnLeft !== null) {
if (c.maxWidth) {
stretchLeewayOnLeft += c.maxWidth - c.previousWidth;
}
else {
stretchLeewayOnLeft = null;
}
}
shrinkLeewayOnLeft += c.previousWidth - Math.max(c.minWidth || 0, absoluteColumnMinWidth);
}
}
if (shrinkLeewayOnRight === null) { shrinkLeewayOnRight = 100000; }
if (shrinkLeewayOnLeft === null) { shrinkLeewayOnLeft = 100000; }
if (stretchLeewayOnRight === null) { stretchLeewayOnRight = 100000; }
if (stretchLeewayOnLeft === null) { stretchLeewayOnLeft = 100000; }
maxPageX = pageX + Math.min(shrinkLeewayOnRight, stretchLeewayOnLeft);
minPageX = pageX - Math.min(shrinkLeewayOnLeft, stretchLeewayOnRight);
originalCanvasWidth = $canvas.width();
})
.bind("drag", function(e,dd) {
var actualMinWidth, d = Math.min(maxPageX, Math.max(minPageX, e.pageX)) - pageX, x, ci;
if (d < 0) { // shrink column
x = d;
for (j = i; j >= 0; j--) {
c = columns[j];
if (c.resizable) {
actualMinWidth = Math.max(c.minWidth || 0, absoluteColumnMinWidth);
if (x && c.previousWidth + x < actualMinWidth) {
x += c.previousWidth - actualMinWidth;
styleColumnWidth(j, actualMinWidth, options.syncColumnCellResize);
} else {
styleColumnWidth(j, c.previousWidth + x, options.syncColumnCellResize);
x = 0;
}
}
}
if (options.forceFitColumns) {
x = -d;
for (j = i + 1; j < columnElements.length; j++) {
c = columns[j];
if (c.resizable) {
if (x && c.maxWidth && (c.maxWidth - c.previousWidth < x)) {
x -= c.maxWidth - c.previousWidth;
styleColumnWidth(j, c.maxWidth, options.syncColumnCellResize);
} else {
styleColumnWidth(j, c.previousWidth + x, options.syncColumnCellResize);
x = 0;
}
}
}
} else if (options.syncColumnCellResize) {
setCanvasWidth(originalCanvasWidth + d);
}
} else { // stretch column
x = d;
for (j = i; j >= 0; j--) {
c = columns[j];
if (c.resizable) {
if (x && c.maxWidth && (c.maxWidth - c.previousWidth < x)) {
x -= c.maxWidth - c.previousWidth;
styleColumnWidth(j, c.maxWidth, options.syncColumnCellResize);
} else {
styleColumnWidth(j, c.previousWidth + x, options.syncColumnCellResize);
x = 0;
}
}
}
if (options.forceFitColumns) {
x = -d;
for (j = i + 1; j < columnElements.length; j++) {
c = columns[j];
if (c.resizable) {
actualMinWidth = Math.max(c.minWidth || 0, absoluteColumnMinWidth);
if (x && c.previousWidth + x < actualMinWidth) {
x += c.previousWidth - actualMinWidth;
styleColumnWidth(j, actualMinWidth, options.syncColumnCellResize);
} else {
styleColumnWidth(j, c.previousWidth + x, options.syncColumnCellResize);
x = 0;
}
}
}
} else if (options.syncColumnCellResize) {
setCanvasWidth(originalCanvasWidth + d);
}
}
})
.bind("dragend", function(e,dd) {
var newWidth;
$(this).parent().removeClass("slick-header-column-active");
for (j = 0; j < columnElements.length; j++) {
c = columns[j];
newWidth = $(columnElements[j]).outerWidth();
if (c.previousWidth !== newWidth && c.rerenderOnResize) {
invalidateAllRows();
}
if (options.forceFitColumns) {
c.width = Math.floor(c.width * (newWidth - c.previousWidth) / c.previousWidth) + c.width;
} else {
c.width = newWidth;
}
if (!options.syncColumnCellResize && c.previousWidth !== newWidth) {
styleColumnWidth(j, newWidth, true);
}
}
resizeCanvas();
trigger(self.onColumnsResized, {});
});
});
}
function getVBoxDelta($el) {
var p = ["borderTopWidth", "borderBottomWidth", "paddingTop", "paddingBottom"];
var delta = 0;
$.each(p, function(n,val) { delta += parseFloat($el.css(val)) || 0; });
return delta;
}
function measureCellPaddingAndBorder() {
var el;
var h = ["borderLeftWidth", "borderRightWidth", "paddingLeft", "paddingRight"];
var v = ["borderTopWidth", "borderBottomWidth", "paddingTop", "paddingBottom"];
el = $("<div class='ui-state-default slick-header-column' style='visibility:hidden'>-</div>").appendTo($headers);
headerColumnWidthDiff = headerColumnHeightDiff = 0;
$.each(h, function(n,val) { headerColumnWidthDiff += parseFloat(el.css(val)) || 0; console.log(el.css(val)) });
$.each(v, function(n,val) { headerColumnHeightDiff += parseFloat(el.css(val)) || 0; });
el.remove();
var r = $("<div class='slick-row' />").appendTo($canvas);
el = $("<div class='slick-cell' id='' style='visibility:hidden'>-</div>").appendTo(r);
rowWidthDiff = cellWidthDiff = cellHeightDiff = 0;
$.each(h, function(n,val) { cellWidthDiff += parseFloat(el.css(val)) || 0; });
$.each(v, function(n,val) { cellHeightDiff += parseFloat(el.css(val)) || 0; });
$.each(h, function(n,val) { rowWidthDiff += parseFloat(r.css(val)) || 0; });
$.each(v, function(n,val) { cellHeightDiff += parseFloat(r.css(val)) || 0; });
r.remove();
absoluteColumnMinWidth = Math.max(headerColumnWidthDiff,cellWidthDiff + rowWidthDiff);
}
function createCssRules() {
$style = $("<style type='text/css' rel='stylesheet' />").appendTo($("head"));
var rowHeight = (options.rowHeight - cellHeightDiff);
var rules = [
"." + uid + " .slick-header-column { left: 10000px; }",
"." + uid + " .slick-top-panel { height:" + options.topPanelHeight + "px; }",
"." + uid + " .slick-headerrow-columns { height:" + options.headerRowHeight + "px; }",
"." + uid + " .slick-cell { height:" + rowHeight + "px; }"
];
for (var i=0; i<columns.length; i++) {
rules.push(
"." + uid + " .c" + i + " { " +
"width:" + ((columns[i].currentWidth || columns[i].width) - cellWidthDiff) + "px; " +
" } ");
}
if ($style[0].styleSheet) { // IE
$style[0].styleSheet.cssText = rules.join("");
}
else {
$style[0].appendChild(document.createTextNode(rules.join(" ")));
}
var sheets = document.styleSheets;
for (var i=0; i<sheets.length; i++) {
if ((sheets[i].ownerNode || sheets[i].owningElement) == $style[0]) {
stylesheet = sheets[i];
break;
}
}
}
function findCssRule(selector) {
var rules = (stylesheet.cssRules || stylesheet.rules);
for (var i=0; i<rules.length; i++) {
if (rules[i].selectorText == selector)
return rules[i];
}
return null;
}
function findCssRuleForCell(index) {
return findCssRule("." + uid + " .c" + index);
}
function removeCssRules() {
$style.remove();
}
function destroy() {
getEditorLock().cancelCurrentEdit();
trigger(self.onBeforeDestroy, {});
for (var i = 0; i < plugins.length; i++) {
unregisterPlugin(plugin);
}
if (options.enableColumnReorder && $headers.sortable)
$headers.sortable("destroy");
unbindAncestorScrollEvents();
$container.unbind(".slickgrid");
removeCssRules();
$canvas.unbind("draginit dragstart dragend drag");
$container.empty().removeClass(uid);
}
//////////////////////////////////////////////////////////////////////////////////////////////
// General
function trigger(evt, args, e) {
e = e || new Slick.EventData();
args = args || args;
args.grid = self;
return evt.notify(args, e, self);
}
function getEditorLock() {
return options.editorLock;
}
function getEditController() {
return editController;
}
function getColumnIndex(id) {
return columnsById[id];
}
function autosizeColumns() {
var i, c,
widths = [],
shrinkLeeway = 0,
availWidth = (options.autoHeight ? viewportW : viewportW - scrollbarDimensions.width - rowWidthDiff), // with AutoHeight, we do not need to accomodate the vertical scroll bar
total = 0,
existingTotal = 0;
for (i = 0; i < columns.length; i++) {
c = columns[i];
widths.push(c.width);
existingTotal += c.width;
shrinkLeeway += c.width - Math.max(c.minWidth || 0, absoluteColumnMinWidth);
}
total = existingTotal;
invalidateAllRows();
// shrink
while (total > availWidth) {
if (!shrinkLeeway) { return; }
var shrinkProportion = (total - availWidth) / shrinkLeeway;
for (i = 0; i < columns.length && total > availWidth; i++) {
c = columns[i];
if (!c.resizable || c.minWidth === c.width || c.width === absoluteColumnMinWidth) { continue; }
var shrinkSize = Math.floor(shrinkProportion * (c.width - Math.max(c.minWidth || 0, absoluteColumnMinWidth))) || 1;
total -= shrinkSize;
widths[i] -= shrinkSize;
}
}
// grow
var previousTotal = total;
while (total < availWidth) {
var growProportion = availWidth / total;
for (i = 0; i < columns.length && total < availWidth; i++) {
c = columns[i];
if (!c.resizable || c.maxWidth <= c.width) { continue; }
var growSize = Math.min(Math.floor(growProportion * c.width) - c.width, (c.maxWidth - c.width) || 1000000) || 1;
total += growSize;
widths[i] += growSize;
}
if (previousTotal == total) break; // if total is not changing, will result in infinite loop
previousTotal = total;
}
for (i=0; i<columns.length; i++) {
styleColumnWidth(i, columns[i].currentWidth = widths[i], true);
}
resizeCanvas();
}
function styleColumnWidth(index,width,styleCells) {
columns[index].currentWidth = width;
$headers.children().eq(index).css("width", width - headerColumnWidthDiff);
if (styleCells) {
findCssRuleForCell(index).style.width = (width - cellWidthDiff) + "px";
}
}
function setSortColumn(columnId, ascending) {
sortColumnId = columnId;
sortAsc = ascending;
var columnIndex = getColumnIndex(sortColumnId);
$headers.children().removeClass("slick-header-column-sorted");
$headers.find(".slick-sort-indicator").removeClass("slick-sort-indicator-asc slick-sort-indicator-desc");
if (columnIndex != null) {
$headers.children().eq(columnIndex)
.addClass("slick-header-column-sorted")
.find(".slick-sort-indicator")
.addClass(sortAsc ? "slick-sort-indicator-asc" : "slick-sort-indicator-desc");
}
}
function handleSelectedRangesChanged(e, ranges) {
selectedRows = [];
var hash = {};
for (var i = 0; i < ranges.length; i++) {
for (var j = ranges[i].fromRow; j <= ranges[i].toRow; j++) {
if (!hash[j]) { // prevent duplicates
selectedRows.push(j);
}
hash[j] = {};
for (var k = ranges[i].fromCell; k <= ranges[i].toCell; k++) {
hash[j][columns[k].id] = options.selectedCellCssClass;
}
}
}
setCellCssStyles(options.selectedCellCssClass, hash);
trigger(self.onSelectedRowsChanged, {rows:getSelectedRows()}, e);
}
function getColumns() {
return columns;
}
function setColumns(columnDefinitions) {
columns = columnDefinitions;
invalidateAllRows();
createColumnHeaders();
removeCssRules();
createCssRules();
resizeAndRender();
handleScroll();
}
function getOptions() {
return options;
}
function setOptions(args) {
if (!getEditorLock().commitCurrentEdit()) {
return;
}
makeActiveCellNormal();
if (options.enableAddRow !== args.enableAddRow) {
invalidateRow(getDataLength());
}
options = $.extend(options,args);
render();
}
function setData(newData,scrollToTop) {
invalidateAllRows();
gridData = newData;
if (scrollToTop)
scrollTo(0);
}
function getData() {
return gridData;
}
function getDataLength() {
if (gridData.getLength) {
return gridData.getLength();
}
else {
return gridData.length;
}
}
function getDataItem(i) {
if (gridData.getItem) {
return gridData.getItem(i);
}
else {
return gridData[i];
}
}
function getTopPanel() {
return $topPanel[0];
}
function showTopPanel() {
options.showTopPanel = true;
$topPanelScroller.slideDown("fast", resizeCanvas);
}
function hideTopPanel() {
options.showTopPanel = false;
$topPanelScroller.slideUp("fast", resizeCanvas);
}
function showHeaderRowColumns() {
options.showHeaderRow = true;
$headerRowScroller.slideDown("fast", resizeCanvas);
}
function hideHeaderRowColumns() {
options.showHeaderRow = false;
$headerRowScroller.slideUp("fast", resizeCanvas);
}
//////////////////////////////////////////////////////////////////////////////////////////////
// Rendering / Scrolling
function scrollTo(y) {
var oldOffset = offset;
page = Math.min(n-1, Math.floor(y / ph));
offset = Math.round(page * cj);
var newScrollTop = y - offset;
if (offset != oldOffset) {
var range = getVisibleRange(newScrollTop);
cleanupRows(range.top,range.bottom);
updateRowPositions();
}
if (prevScrollTop != newScrollTop) {
scrollDir = (prevScrollTop + oldOffset < newScrollTop + offset) ? 1 : -1;
$viewport[0].scrollTop = (lastRenderedScrollTop = scrollTop = prevScrollTop = newScrollTop);
trigger(self.onViewportChanged, {});
}
}
function defaultFormatter(row, cell, value, columnDef, dataContext) {
return (value === null || value === undefined) ? "" : value;
}
function getFormatter(column) {
return column.formatter ||
(options.formatterFactory && options.formatterFactory.getFormatter(column)) ||