Correctly calling setGridWidth on a jqGrid inside a jQueryUI Dialog

There are some cases, where jqGrid calculate the width a little incorrect. Mostly I have problems with grid width, but in some cases on IE6 also with the height. So I have to write a small function to fix the problem.

var fixGridWidth = function (grid) {
    var gviewScrollWidth = grid[0].parentNode.parentNode.parentNode.scrollWidth;
    var mainWidth = jQuery('#main').width();
    var gridScrollWidth = grid[0].scrollWidth;
    var htable = jQuery('table.ui-jqgrid-htable', grid[0].parentNode.parentNode.parentNode);
    var scrollWidth = gridScrollWidth;
    if (htable.length > 0) {
        var hdivScrollWidth = htable[0].scrollWidth;
        if ((gridScrollWidth < hdivScrollWidth))
            scrollWidth = hdivScrollWidth; // max (gridScrollWidth, hdivScrollWidth)
    }
    if (gviewScrollWidth != scrollWidth || scrollWidth > mainWidth) {
        var newGridWidth = (scrollWidth <= mainWidth)? scrollWidth: mainWidth;  // min (scrollWidth, mainWidth)
        // if the grid has no data, gridScrollWidth can be less then hdiv[0].scrollWidth
        if (newGridWidth != gviewScrollWidth)
            grid.jqGrid("setGridWidth", newGridWidth);
    }
};

var fixGridHeight = function (grid) {
    var gviewNode = grid[0].parentNode.parentNode.parentNode;
    //var gview = grid.parent().parent().parent();
    //var bdiv = jQuery("#gview_" + grid[0].id + " .ui-jqgrid-bdiv");
    var bdiv = jQuery(".ui-jqgrid-bdiv", gviewNode);
    if (bdiv.length) {
        var delta = bdiv[0].scrollHeight - bdiv[0].clientHeight;
        var height = grid.height();
        if (delta !== 0 && height && (height-delta>0)) {
            grid.setGridHeight(height-delta);
        }
    }
};

var fixGridSize = function (grid) {
    this.fixGridWidth(grid);
    this.fixGridHeight(grid);
};

In this code "main" is the id of parent div inside of which the grid will be created. In the code I test (scrollWidth > mainWidth) whether the width of "main" allow increasing of jqGrid width.

Correct place to call this function is inside of loadComplete:

loadComplete: function() {
    var gr = jQuery('#list');
    fixGridSize(gr);
}

and inside of "done", if you use 'columnChooser' if use use Query('#list').jqGrid('columnChooser');

(in this example I use also 'gridResize'.)