Configuration

dhtmlxTreeGrid possesses flexible configuration that let you get desired look and feel via a collection of versatile properties.

Columns

It is possible to adjust the configuration of grid columns via the corresponding option columns. As a value it takes an array with objects each of which contains config of a column. The full list of properties you can set for a column is given in the API reference.

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        { width: 100, id: "a", header: [{ text: "#" }] },
        { width: 100, id: "b", header: [{ text: "Title" }] },
        { width: 200, id: "c", header: [{ text: "Name" }] },
        { width: 200, id: "d", header: [{ text: "Address" }] }
    ],
    data: dataset
});

Related sample:  TreeGrid. Basic initialization

Each column object may contain a set of properties described below:

Alignment

Starting from v6.5, there is the ability to align data in a column as well as to align data in the column's header via the align option:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        { id: "name", header:  [{ title: "Name", align: "center" }], align: "right"}         // more options
    ],
    data: dataset
});

Related sample:  Content align - DHTMLX TreeGrid

The available values of the option are "left", "center" and "right".

Autosize for columns

You can configure columns' settings so that their width would automatically adjust to their content. Use the adjust property for this purpose. The property can take one of 4 values:


var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    adjust: "header",     data: dataset
});

Related sample:  TreeGrid. Adjust Columns

It is also possible to set the adjust property to true in the configuration of a separate column to make its width adjust automatically to the content:

var treegrid = new dhx.TreeGrid("treegrid_container", { 
    columns: [
        { id: "country", header: [{ text: "Country" }], adjust: "header" },         { id: "population", header: [{ text: "Population" }] }
    ],
    adjust: false,     data: dataset
});

Autoheight for columns

Starting from v7.1, you can set the autoHeight:true option in the configuration of TreeGrid to make long text to split into multiple lines automatically based on the width of the column:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    autoHeight: true,      data: dataset
});

Related sample:  TreeGrid. Auto height

As a result, the height of the cells will automatically adjust to their content.

Note, that the autoHeight option does not adjust the height in the cells of the header/footer of TreeGrid. The option just makes their text to split into multiple lines, but the height of the cells will remain the same. To set the height of the rows in the header/footer, you should apply the headerRowHeight and footerRowHeight configuration options of TreeGrid.

Autowidth for columns

It is possible to adjust the size of TreeGrid columns to the size of TreeGrid with the help of the autoWidth configuration option, like this:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    autoWidth: true,     data: dataset
});

Related sample:  TreeGrid. Auto Width

You can disable this functionality for a specified column via setting the autoWidth property to false in the configuration of the column:

var treegrid = new dhx.TreeGrid("grid", {
    columns: [
        { width: 200, id: "country", header: [{ text: "Country" }], autoWidth: false },         { width: 150, id: "population", header: [{ text: "Population" }] },
    ],
    autoWidth: true,     data: dataset
});

Data

You can specify data for your grid before initialization via the data configuration property. There are also API methods for loading data into grid on the fly. Check the details in the article Data Loading.

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    data: dataset });

Related sample:  TreeGrid. Basic initialization

Drag-n-drop of Grid columns

Starting from v6.5, you can add the ability to reorder columns of TreeGrid by drag and drop via using the dragItem configuration property and setting its value to "column".

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    dragItem:"column",        data: dataset
});

You can disable this functionality for a separate column via the draggable configuration option of the column:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        { width: 200, id: "name", header: [{ text: "Name" }], draggable: false },         { width: 260, id: "native", type: "string", header: [{ text: "Native name" }] },
        { width: 200, id: "currency", type: "string", header: [{ text: "Currency" }] } 
    ],
    data: dataset,
    dragItem: "column",    });

Related sample:  Setup drag column

To make the process of reordering columns by drag and drop more flexible, apply the related events:

Drag-n-drop of Grid rows

dhtmlxTreeGrid supports drag-n-drop of rows between grids in several modes. To begin with, you should specify the dragMode property in the configuration object of TreeGrid. Then define which mode you need:

  • "target" - a grid takes rows from other grids, while its row can't be dragged out of it
  • "source" - a grid allows dragging its rows out and can't take rows from other grids
  • "both" - a grid both takes rows from other grids and allows dragging its rows out as well
var treegrid = new dhx.TreeGrid("treegrid_container", { 
    columns: [
        { id: "country", header: [{ text: "Country" }] },
        { id: "population", header: [{ text: "Population" }] }
    ],
    data: dataset,
    dragMode: "source" });

Related sample:  TreeGrid. Setup Drag Mode

Here is a list of drag-n-drop events that you can use while drag-n-drop of rows is enabled:

Editing Grid and separate columns

dhtmlxGrid provides the editing feature that includes two options:

  • editing of the whole Grid, i.e. of all its columns

To make all columns of the Grid editable, specify the editable option in the configuration of Grid:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    data: data,
    editable: true });

Related sample:  TreeGrid. Editable Data

  • editing of the specified columns only

This option implies that you can enable/disable editing of particular columns by setting the editable: true property in the configuration of a column:

In the example below all columns will be editable, except for the first one:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        { 
            width:150,id:"project",
            editable:false,             header: [
              {text:"Project"}, {content:"selectFilter"}
            ]
        },
        { width:150, id:"owner", header: [{text:"Owner"},{content:"inputFilter"}]},
        { width:150, id:"hours", header: [{text:"Hours"}, {content:"inputFilter"}]},
        // more columns
    ],
    data: data,
    editable: true
});

And the following example demonstrates an opposite situation when only the first column is editable:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        { 
           width:150,id:"project",
           editable:true,            header: [
            {text:"Project"}, {content:"selectFilter"}
           ]
        },
        { width:150, id:"owner", header: [{text:"Owner"},{content:"inputFilter"}]},
        { width:150, id: "hours", header: [{text:"Hours"}, {content:"inputFilter"}]},
        // more columns
    ],
    data: data
});

Setting type of column editor

You can specify the way of editing the cells of a Grid column depending on its content as simple inputs, select controls or date pickers. The type of the used editor is defined by the editorType property of a column. There are three types of column editors:

  • input - an editor for cells with a simple text (the default one, unless a column has type:"date")
// cells of the "project" column will be edited as inputs
var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        {
            width: 150,
            id: "project",
            header: [{ text: "Project" }, { content: "selectFilter" }]
        }
    // more columns
    ],
    data: data,
    editable: true
});
  • datePicker - an editor for cells with dates (default for a column with type:"date")

To use this editor, you should specify the type:"date" property for a column. It is also possible to set the necessary format of date while editing a cell content with the help of the format option.

{ 
    // if the type:"date" config is set in the column config, 
    // there's no need to specify the type of the editor
    width: 150, id: "start_date", 
    header: [{ text: "Calendar", colspan: 2 }, { text: "Start date" }], 
    type: "date", format: "%d/%m/%Y"  }
  • select - an editor for cells that should contain several options to choose from

To set this editor type you need to provide the options property with an array of options to be displayed in the editor, e.g.:

{
    width: 150, id: "status", header: [{text: "Status"}, {content: "selectFilter"}],
    editorType: "select", options: ["Done", "In Progress", "Not Started"] }

Related sample:  TreeGrid. Editable Data

  • checkbox - an editor for cells with a two-state check box

To use this editor, you need to specify the type: "boolean" property for a column.

{ 
    // if the type:"boolean" config is set in the column config, 
    // there's no need to specify the type of the editor
    width: 160, id: "test", 
    header: [{ text: "Test" }], 
    type: "boolean" }

Related sample:  TreeGrid. Editable Data

If you specify the editable option in the configuration of Grid, then editing of a column with checkbox will always be enabled.

  • combobox - an editor for cells that should contain several options to choose from. There is a possibility to find an option by entering text in the edit control

To use this editor you need to specify the editorType: "combobox" property for a column and provide the options property with an array of options to be displayed in the editor, e.g.:

{
    width: 160, id: "test", header: [{ text: "Test" }], type: "string", 
    editorType: "combobox", options: ["1 time", "1-2 times", "more than 5 times"]  }

Related sample:  TreeGrid. Editable Data

  • textarea - an editor for cells that contain text

To use this editor, you should specify the editorType:"textarea" property for a column.

The textarea editor allows editing multiple lines of text when the autoHeight:true configuration option of TreeGrid is enabled.

var treegrid = new dhx.TreeGrid("treegrid", {
    columns: [
        {
            id: "name", header: [{ text: "Book Name" }], gravity: 1.5, 
            editorType: "textarea"         }
    // more columns
    ],
    data: data,
    editable: true,
    autoHeight: true });

Formatting columns

Starting from v7.1, you can display the values of the cells of a TreeGrid column in the desired format:

1. To define the format for numeric values, apply the format configuration option of the column:

{ 
    width: 150, id: "price", header: [{ text: "Price" }],  
    type: "number", format: "# #.000" }
// -> 4564.2 will be displayed as 4 564.200

The following characters can be used:

  • # - the integer part of the number
  • 0 - the fractional part of the number. The 0 placeholder displays insignificant zeros if a number has fewer digits than there are zeros in the format string, for instance, the .00 format will display 0.298 as 0.30.
    If a number has more digits to the right of the decimal point than there are placeholders in the format string, the number rounds to as many decimal places as there are placeholders, for instance, the .000 format will display 0.2 as 0.200.
  • # # - sets the thousands separator in a number (123 456)
  • #.0 - sets the separator for the decimal point in a number (123 456.357)

2. You can display the percentage value in the necessary format by setting the type: "percent" configuration option of a column together with the format option:

{ 
    width: 150, id: "inStock", header: [{ text: "In stock" }], 
    type: "percent", format: "#.00" }
// -> 0.0039 will be displayed as 0.39%

When using just the type: "percent" configuration option of a column, the result will be the following:

{ 
    width: 150, id: "inStock", header: [{ text: "In stock" }], 
    type: "percent" }
// -> 0.0039 will be displayed as 0%

3. To define the format for dates, set the type: "date" property for a column and define the format of dates with the help of the format option:

{ 
    width: 150, id: "start_date", 
    header: [{ text: "Calendar", colspan: 2 }, { text: "Start date" }], 
    type: "date", format: "%d/%m/%Y"  }

Related sample:  TreeGrid. Data formats

Frozen columns

You can fix (or "freeze") a column or several columns, so that they will become static, while the rest of columns remain scrollable. There is the leftSplit property that splits grid columns into the frozen and movable parts. Just set the number of columns (from the left side of the grid) you want to freeze as a value of the property in the Grid configuration.

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    leftSplit:1,       data: dataset
});

Related sample:  TreeGrid. Frozen Columns

Header/footer content

There are three types of filters that you can specify in the header/footer content of a Grid column:

  • inputFilter - provides a way of filtering data of a Grid column by using a text field
{ 
    width: 160, id: "budget", 
    header: [{ text: "Budget" }, { content: "inputFilter" }] }
  • selectFilter - allows end users to filter data of a column by choosing an option from a presented dropdown list
{ 
    width: 160, id: "status", 
    header: [{ text: "Status" }, { content: "selectFilter" }],     editorType: "select", 
    options: ["Done", "In Progress", "Not Started"] 
}
  • comboFilter - provides a way to filter data of a column by choosing an option from a presented dropdown list. To find an option quickly you can enter text into the edit control.
{
    width: 160, id: "renewals", 
    header: [{ text: "Number of renewals" }, { content: "comboFilter" }],     type: "string", editorType: "combobox", 
    options: ["1 time", "1-2 times", "more than 5 times"] 
}

If you specify comboFilter as the header or footer content of a column, you can set an additional config with properties for it.

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        {
            width: 150, 
            id: "migrants", 
            header: [
                { text: "Migrants (net)" }, 
                { content: "comboFilter", filterConfig: {readonly: true }}             ] 
        }   
    ],
    data: dataset
}

The list of configuration properties for comboFilter

Header/footer height

The height of the header/footer of Grid is calculated as a sum of rows which are included into it. To set the height of a row inside the header/footer, use the headerRowHeight / footerRowHeight properties, correspondingly.

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    // footerRowHeight:50       headerRowHeight: 50    });

Related sample:  TreeGrid. Rows Height

The default value of the mentioned properties is 40.

Hidden columns

You can set the hidden:true property in the config of a column so that it doesn't appear on a page.

{ 
    width: 150, id: "population", header: [{ text: "Population" }] 
},
{ 
    hidden: true, width: 150, id: "yearlyChange", header: [{ text: "Yearly Change" }] }

Related sample:  TreeGrid. Hidden Columns

HTML content of TreeGrid columns

dhtmlxTreeGrid allows adding HTML content into TreeGrid cells in two ways:

  • by specifying the HTML content of all TreeGrid columns

This way presupposes making each cells of TreeGrid capable of displaying the HTML content via using the htmlEnable property in the configuration object of TreeGrid.

var dataset = [
    {
        "name": "A Time to Kill",
        "inStock": "80 <input type='checkbox' checked />"
    },
];
 
var treegrid = new dhx.TreeGrid("treegrid", {
    columns: [// columns config],
    data: dataset,
    htmlEnable: true });
  • by specifying the HTML content of a separate column

If you want to add custom elements into cells of the specified column, you need to set the htmlEnable:true property in the configuration of a column:

var dataset = [
    {
        "name": "A Time to Kill",
        "inStock": "80 <input type='checkbox' checked />"
    },
];
 
var treegrid = new dhx.TreeGrid("treegrid", {
    columns: [
        { width: 280, id: "name", header: [{ text: "Book Name" }] },
        {
            width: 160, id: "inStock", type: "string", 
            header: [{ text: "In stock" }], 
            htmlEnable: true         } 
        // more columns 
    ],
    data: dataset
});

Related sample:  TreeGrid. Html In Data

Event handlers for HTML content

Starting from v7.0, you can add event handlers to the HTML elements defined in the data set of TreeGrid with the help of the eventHandlers configuration property, for instance:

const data = [
    {
        "name": "A Time to Kill",
        "price": "12.25",
        "cover": "Hardcover",
        "ships": "12 hours",
        "inStock": "<div class='cell__html'><input type='checkbox' checked />80</div>",         "parent": "c.1"
    },
    // more options
];
 
const grid = new dhx.Grid("grid", {
    columns: [
        { 
            width: 160, id: "inStock", type: "string", 
            header: [{ text: "In stock" }], 
            htmlEnable: true 
        }, 
        // more options
    ],
    data: data,
    eventHandlers: {         onmouseover: {             cell__html: function(event, data) {                 display(JSON.stringify(data.col, null, 2));             }         }     } });

Related sample:  Handling events in template - DHTMLX TreeGrid

The eventHandlers object includes a set of key:value pairs, where:

Resizing

Columns of Grid have fixed width with no possibility to change them from UI. You can switch on the corresponding resizable configuration option to make all columns of Grid resizable.

var grid = new dhx.Grid("grid_container", {
    columns: [// columns config],
    data: dataset,
    resizable: true }

Then you will be able to change the width of columns using the mouse. With the cursor grab the right border and drag to the desired width.

If you also set the autoWidth configuration option, you will be able to change the width of columns only inside the container of Grid.

You can disable the resizing of any column by setting the resizable:false property in the config of a column.

var grid = new dhx.Grid("grid_container", {
    columns: [
        { width: 150, id: "test1", header: [{ text: "Test1" }] },
        { width: 150, id: "test2", header: [{ text: "Test2" }], resizable: false }     ],
    data: dataset,
    resizable: true }

Related sample:  TreeGrid. Resizable Columns

To define the resizing limits, set necessary values to the minWidth/maxWidth properties in the config of a column.

Row height

The default height of a grid row is 40. You can change it and set any other height via the rowHeight property, e.g.:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    rowHeight: 30,      data: dataset
});

Related sample:  TreeGrid. Rows Height

In this case, the height of each row is 30.

Setting height for a separate row

Starting with v7.1, it is possible to specify the height for the necessary row of data in TreeGrid via setting the number value to the height option when defining the data set:

var dataset = [
    {
        "name": "Argentina",
        "native": "Argentina",
        "phone": "54",
        "continent": "SA",
        "capital": "Buenos Aires",
        "height": 70     },
    {
        "name": "American Samoa",
        "native": "American Samoa",
        "phone": "1684",
        "continent": "OC",
        "capital": "Pago Pago"
    }
];

Related sample:  TreeGrid. Row height

The height option has a higher priority than the autoHeight:true configuration property of TreeGrid.

Row style

There is a possibility to apply some styling to a row via the rowCss property. It is a function that takes the id of a row as a parameter and returns a string with the name of a CSS class.

<style>
    .my_custom_row {
        background: coral;
    }
</style>
 
 
var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    rowCss: function (row) { return row.custom ? "my_custom_row" : "" },     data: dataset
});

Related sample:  TreeGrid. Custom Row Style

Selection

dhtmlxTreeGrid includes the selection feature that allows highlighting TreeGrid elements depending on the chosen mode. The selection property enables selection in a grid. It can take three values:


var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    selection:"complex",        data: dataset
});

Related sample:  TreeGrid. Selection

Sorting columns

By default, dhtmlxTreeGrid allows sorting content of any TreeGrid column by clicking on its header.

To disable this option, set the sortable property in the TreeGrid configuration to false:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    sortable:false,       data: dataset
});

Related sample:  TreeGrid. Sortable Columns

Sorting separate columns

You can make separate columns sortable by specifying the sortable:true property in the configuration of a column.

In the example below all columns will be sortable, except for the second one:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        { width: 200, id: "country", header: [{ text: "Country" }], sortable: true },         { width: 150, id: "land", header: [{ text: "Land" }] },
        { width: 150, id: "density", header: [{ text: "Density" }], sortable: true }     ],
    data: dataset,
    sortable: false,    });

The following sample demonstrates the same situation:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [
        { width: 200, id: "country", header: [{ text: "Country" }] },
        { width: 150, id: "land", header: [{ text: "Land" }], sortable: false },         { width: 150, id: "density", header: [{ text: "Density" }] }
    ],
    data: dataset
});

Spans

The component has the spans property that allows you to specify all necessary columns and rows spans right through the initial configuration. It represents an array with spans objects. Each span object contains the following properties:


var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    spans: [
        {row:"0", column:"a", rowspan:5 },
        {row:"0", column:"b", rowspan:9, text:"<h2>Some content here</h2>"},
        {row:"0", column:"c", colspan:2, text:"Some content"},
        {row:"10", column:"a", colspan:4, text:"Some header", css:"myCustomColspan"}
    ],
    data: dataset
});

Related sample:  TreeGrid. Spans Cells

Note, that if both the spans and splitAt properties are set in the Grid config, the following rules will be applied:

  • All necessary columns or rows will be in a span if the spans property is set for the columns located within the frozen area.
  • If the spans property is set for a number of columns or rows placed as in the frozen part as in the movable one, then the columns remained in the movable part only will be in a span.

Tooltip

The default configuration of TreeGrid provides tooltips that are rendered when a user hovers over the content of a column. Starting from v6.5, you can hide the tooltips via setting the tooltip configuration property of TreeGrid to false:

var treegrid = new dhx.TreeGrid("treegrid", {
    columns: [//columns config],
    data: dataset,
    tooltip: false 
});

Related sample:  Hiding tooltips - DHTMLX TreeGrid

There is also the possibility to enable/disable tooltips for separate columns or spans by using the tooltip option in the configuration object of the columns or spans accordingly:

var treeGrid = new dhx.TreeGrid("treegrid", {
    columns: [
        { width: 280, id: "name", header: [{ text: "Book Name" }], tooltip: true },         { width: 160, id: "cover", type: "string", header: [{}, { text: "Cover" }] },
        { width: 160, id: "ships", type: "string", header: [{ text: "Ships in" }] },
        { width: 160, id: "inStock", type: "string", header: [{ text: "In stock" }] }
    ],
    data: dataset,
    tooltip: false });

Related sample:  Hiding tooltips - DHTMLX TreeGrid

Width/height

You can specify necessary size of your TreeGrid via the configuration properties width and height:

var treegrid = new dhx.TreeGrid("treegrid_container", {
    columns: [// columns config],
    width: 400,       height: 400,      data: dataset
});

In case these options aren't set in the TreeGrid configuration, the component will take the size of the container.

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