Setting up dgrid cells to show the complete width of the information

Question

Setting up dgrid cells to show the complete width of the information

I am developing an application that will generate a dgrid with variable column numbers and widths determined by user input. Please refer to the screenshots below for examples. The first screenshot displays a dgrid with only a few select fields, rendering neatly across the screen horizontally. In contrast, the second screenshot shows a dgrid with numerous select fields, resulting in cluttered data as it tries to fit everything on one screen. It's important to note that the dgrid is contained within a dijit BorderContainer.

Screenshot 1 (Small SELECT fieldset, renders correctly)

Screenshot 2 (Large SELECT fieldset, renders poorly)

While there are several issues at play here, my primary question is:

Is there a CSS rule or another method, such as a dgrid function or event, that can be used to ensure cells expand to accommodate their content without cutting off any data (i.e., no overflow)? This would require the grid to display a horizontal scrollbar. I attempted using
```
.dgrid-cell { white-space:nowrap; }
```
, but this approach was ineffective. It seems as though a span element may need to be added inside each cell with the specified CSS rule?
Additionally, determining when to apply the above rule versus allowing the table to use 100% width when the data fits within the screen may present a secondary challenge. Any suggestions on how to address this issue?

Thank you.

javascript json dojo dgrid dstore

Answer 1

Answer №1

Below is my method for setting a grid cell width based on data. This approach is specifically for a datagrid object, but may require some adjustments for a dgrid object.

Here are the steps involved:

1) Start by creating a <div> tag in your HTML with the id test:

<div id="test"></div>

2) Iterate through the data for each column in the grid and determine the largest width of the data for that column using JavaScript, like so:

var fnt_sz = '9pt';
var tst_item = window.document.getElementById("test");
tst_item.style.fontSize = fnt_sz;
var widthPX = 45; //default pixel width
for (var i = 0; i < columns.length; i++) {
  tst_item.innerHTML = columns[i]; //columns array represents data to be displayed for the column
   widthPX = (tst_item.clientWidth + 1); //Calculate the width in pixels of the data, add padding as needed
}

Key considerations here include setting the appropriate font size (fnt_sz), iterating through all the column data to find the largest width in pixels for the column. Utilize the largest widthPX value to set the column width in your layout object for the datagrid.

3) When constructing the layout JSON data for your datagrid, specify the width for each column (using the maximum data widthPX for the column). For example:

var build_layout = "    var layout = [[{'name': 'ID', 'field': 'id', 'width': '17px'},";
for (var i = 0; i < cols.length; i++) {
  build_layout += "\n{'name': '" + cols[i] + "', 'field': 'col" + (i+1) + "', 'width': '" + widths[i] + "px'},"; 
}
build_layout += "]];";
eval(build_layout);

/* Create a new grid */
var grid = new DataGrid({
  id: 'grid',
  store: store,
  structure: layout, //Utilize layout JSON data with specified width: xxpx; for each column
  rowSelector: '20px',
  style: 'font-size:9pt',
  rowsPerPage: 1000,
  columnReordering: true,
  autoWidth: true,
  autoHeight: autoH});

Upon displaying the grid, it should appear well in any browser with all data visible, as the column width PX value exceeds the largest data item for that column. It's recommended to set a maximum pixel value for each column to avoid excessive width.

While this process can be cumbersome, ideally such functionality should be inherent to the Dojo datagrid object...

Here is the outcome after following these steps:

Answer 2

Below is my method for setting a grid cell width based on data. This approach is specifically for a datagrid object, but may require some adjustments for a dgrid object.

Here are the steps involved:

1) Start by creating a <div> tag in your HTML with the id test:

<div id="test"></div>

2) Iterate through the data for each column in the grid and determine the largest width of the data for that column using JavaScript, like so:

var fnt_sz = '9pt';
var tst_item = window.document.getElementById("test");
tst_item.style.fontSize = fnt_sz;
var widthPX = 45; //default pixel width
for (var i = 0; i < columns.length; i++) {
  tst_item.innerHTML = columns[i]; //columns array represents data to be displayed for the column
   widthPX = (tst_item.clientWidth + 1); //Calculate the width in pixels of the data, add padding as needed
}

Key considerations here include setting the appropriate font size (fnt_sz), iterating through all the column data to find the largest width in pixels for the column. Utilize the largest widthPX value to set the column width in your layout object for the datagrid.

3) When constructing the layout JSON data for your datagrid, specify the width for each column (using the maximum data widthPX for the column). For example:

var build_layout = "    var layout = [[{'name': 'ID', 'field': 'id', 'width': '17px'},";
for (var i = 0; i < cols.length; i++) {
  build_layout += "\n{'name': '" + cols[i] + "', 'field': 'col" + (i+1) + "', 'width': '" + widths[i] + "px'},"; 
}
build_layout += "]];";
eval(build_layout);

/* Create a new grid */
var grid = new DataGrid({
  id: 'grid',
  store: store,
  structure: layout, //Utilize layout JSON data with specified width: xxpx; for each column
  rowSelector: '20px',
  style: 'font-size:9pt',
  rowsPerPage: 1000,
  columnReordering: true,
  autoWidth: true,
  autoHeight: autoH});

Upon displaying the grid, it should appear well in any browser with all data visible, as the column width PX value exceeds the largest data item for that column. It's recommended to set a maximum pixel value for each column to avoid excessive width.

While this process can be cumbersome, ideally such functionality should be inherent to the Dojo datagrid object...

Here is the outcome after following these steps:

Setting up dgrid cells to show the complete width of the information

Answer №1

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