Cell Renderer's are for displaying data and Cell Editors are for editing data. If your application is for showing data only, such as a reporting application, then you will not need to use cell editors. If you are editing your data like a spreadsheet, then you will need Cell Editors to do the editing.
You configure cell editors as part of the column definition and can be one of the following:
undefined / null: The grid uses the default text cell editor.
string: The name of a cell renderer registered with the grid.
Class: Provide your own cell renderer component directly without registering.
Enabling editing in a column
The simplest way to enable editing is by providing
colDef.editable=true by doing so all the cells
in the column will be editable.
It is possible to have only a few cells in a column editable, to do so, instead of
you can specify a callback that will get called for each cell displayed for that column. If you return true the
cell will be editable. The params for the callback are:
|node||The RowNode of the row being rendered.|
|column||The column been rendered (in ag-Grid, each colDef is wrapped by a Column).|
|colDef||The colDef been rendered.|
|context||The context as set on the gridOptions.|
|api||A reference to the grid api.|
|columnApi||A reference to the column api.|
To get simple string editing, you do not need to provide an editor. The grid by default allows simple string editing on cells. The default editor is used if you do not provide a cell editor.
If you have
colDef.editable=true set for a column then editing will start upon any of the following:
Editing can start in the following ways:
- Edit Key Pressed: One of the following is pressed: Enter, F2, Backspace, Delete. If this happens then params.keyPress will contain the key code of the key that started the edit. The default editor will clear the contents of the cell if Backspace or Delete are pressed.
- Printable Key Pressed: Any of the following characters are pressed:
If this happens then
params.charPresswill contain the character that started the edit. The default editor places this character into the edit field so that the user experience is they are typing into the cell.
- Mouse Double Click: If the mouse is double clicked. There is a grid property
singleClickEditthat will allow single click to start editing instead of double click. Another property
suppressClickEditwill prevent both single click and double click from starting the edit - use this if you want to have your own way of starting editing only, such as clicking a button in your custom cell renderer.
- api.startEditingCell(): If you call
startEditingCell()on the grid API
Stop / End Editing
The grid will stop editing when any of the following happen:
- Callback stopEditing: The callback
stopEditing(from the params above) gets called by the editor. This is how your cell editor informs the grid to stop editing.
- Other Cell Focus: If focus in the grid goes to another cell, the editing will stop.
- Enter Key Down: If the grid receives an 'Enter' key press event on the cell. If you do NOT want to stop editing when Enter is pressed, then listen for the event and stop propagation so the grid does not act on the event.
- Escape Key Down: Similar to Enter, if Escape key is pressed, editing will stop. Unlike Enter, Escape action will not take the new value, it will discard changes.
- Tab Key Down: Editing will stop, accepting changes, and editing will move to the next cell, or the previous cell if 'shift' is also pressed.
- Navigation Key Down: Editing will stop, accepting changes, and editing will move to the next cell in the direction of the navigation key.
- Popup Editor Closed: If using popup editor, the popup is configured to close if you click outside the editor. Closing the popup triggers the grid to stop editing.
- gridApi.stopEditing(): If you call
stopEditing()on the grid API.
Popup vs In Cell
An editor can be in a popup or in cell.
In Cell editing means the contents of the cell will be cleared and the editor will appear inside the cell. The editor will be constrained to the boundaries of the cell, if it is larger that the provided area it will be clipped. When editing is finished, the editor will be removed and the renderer will be placed back inside the cell again.
If you want your editor to appear in a popup (such as a dropdown list), then you can have it appear in a popup. The popup will behave like a menu in that any mouse interaction outside of the popup will close the popup. The popup will appear over the cell, however it will not change the contents of the cell. Behind the popup the cell will remain intact until after editing is finished which will result in the cell being refreshed.
From a lifecycle and behaviour point of view, 'in cell' and 'popup' have no impact on the editor. So you can create a cell editor and change this property and observe how your editor behaves in each way.
To have an editor appear in a popup, have the
isPopup() method return true. If you want editing
to be done within a cell, either return false or don't provide this method at all.
While editing, if you hit tab, the editing will stop on the current cell and start on the next cell. If you hold down shift+tab, the same will happen except the previous cell will start editing rather than the next. This is in line with editing data in Excel.
The next and previous cells can also be navigated using the API functions
api.tabToPreviousCell(). Both of these methods will return true if the navigation was
successful, otherwise false.
Provided Cell Editors
The grid, out of the box, comes with the following editors:
agTextCellEditor: Simple text editor that uses standard HTML Input. This is the default.
agSelectCellEditor: Simple editor that uses standard HTML Select.
agPopupTextCellEditor: Same as 'text' but as popup.
agPopupSelectCellEditor: Same as 'select' but as popup.
agLargeTextCellEditor: - A text popup that for inputting larger, multi-line text.
agRichSelectCellEditor (ag-Grid-Enterprise only): - A rich select popup that uses row virtualisation
selectto behave odd when in the grid. This is because the browser doesn't have a great API for opening and closing the select's popup. We advise you don't use it unless you have to - that is we advise against
agPopupSelectCellEditoras they give poor user experience, especially if using keyboard navigation. If using ag-Grid Enterprise, then you should use the provided
The default text cell editor takes no parameters. The select cell editor takes a list of values from which the user can select. The example below shows configuring the select cell editor.
If you have many instances of a grid, you must register the cell editors with each one.
Value Parser and Value Setter
Value setter and value parsers are the inverse of a value getters and formatters. If you want to parse the data, or set the value into your data in ways other than just using the field, see the sections Value setter and value parsers.
Event: Cell Value Changed
After a cell has been changed with default editing (ie not your own custom cell renderer),
cellValueChanged event is fired. You can listen for this event in the normal
way, or additionally you can add a
onCellValueChanged() callback to the colDef.
This is used if your application needs to do something after a value has been changed.
cellValueChanged event contains the same parameters as
newValueHandler with one difference,
newValue. If 'field' is in the column definition, the
newValue contains the value
in the data after the edit. So for example, if the
onCellValueChanged converts the provided
string value into a number, then
newValueHandler will have the string, and
onCellValueChanged will have the number.
There are two api methods for editing,
Starts editing the provided cell. If another cell is editing, the editing will be stopped in that other cell. Parameters are as follows:
- rowIndex: The row index of the row to start editing.
- colKey: The column key of the column to start editing.
- rowPinned: Set to 'top' or 'bottom' to started editing a pinned row.
- keyPress, charPress: The keyPress and charPress that are passed to the cell editor
If the grid is editing this will stop editing.
Pass true to cancel editing, i.e. revert any changes.
Start / Stop Editing Events
The following events are fired as editing starts and stops:
cellEditingStarted:editing has started on a cell.
cellEditingStopped:editing has stopped on a row.
rowEditingStarted:editing has started on a row. Only for full row editing.
rowEditingStopped:editing has stopped on a row. Only for full row editing.
Cell Editing Example
The example below illustrates different parts of the editing API. Each button starts editing the 'Last Name' column of the first row with the following differences:
edit(): Normal editing start.
edit(Delete): Edit as if delete button was pressed (clears contents first).
edit('T'): Edit as if 'T' was pressed (places 'T' into cell).
edit(top): Edits top pinned row.
edit(bottom): Edits bottom pinned row.
The example then demonstrates the following buttons for edit navigation:
stop(): Stops editing.
next(): Edits the next cell.
previous(): Edits the previous cell.
Many Editors One Column
It is also possible to use different editors for different rows in the same column.
Typically an application might check the rows contents and choose and editor accordingly.
To configure this set
to a function that returns the name of the component to be used as an editor
and optionally the custom params to be passed into it
The parameters that these functions will receive are:
The following example illustrates how to use different editors and parameters in the same column. Note that:
- The column 'Value' holds data of different types as shown in the column 'Type' (numbers/genders/moods).
colDef.cellEditorSelectoris a function that returns the name of the component to use to edit based on the type of data for that row
- Edit a cell by double clicking to observe the different editors used.
Enter Key Navigation
By default pressing Enter will start editing on a cell, or stop editing on an editing cell. It will not navigate to the next cell.
To allow consistency with Excel set the grid property
enterMovesDownAfterEdit=true to move
focus down after Enter is pressed while editing.
The example below demonstrates the focus moving down when Enter is pressed after editing.
Datepicker Cell Editing Example
The example below illustrates:
- 'Date' column uses a Component cell editor that allows you to pick a date using jQuery UI Datepicker.
Full Row Editing
Full row editing is for when you want all cells in the row to become editable at the same time. This gives the impression to the user that the record the row represents is getting edited.
To enable full row editing, set the grid option
editType = 'fullRow'.
If using custom cell editors, the cell editors will work in the exact same way with the following additions:
focusIn:If your cell editor has a
focusIn()method, it will get called when the user tabs into the cell. This should be used to put the focus on the particular item to be focused, eg the
textfieldwithin your cell editor.
focusOut:If your cell editor has a
focusOut()method, it will get called when the user tabs out of the cell. No intended use for this, is just there to compliment the
focusIn()method, maybe you will have a reason to use it.
Events:When a row stops editing, the
cellValueChangedevent gets called for each column and
rowValueChangedgets called once for the row.
Full Row Edit and Popup Editors
Full row editing is not compatible with popup editors. This is because a) the grid would look confusing to pop up an editor for each cell in the row at the same time and b) the complexity of navigation and popup is almost impossible to model - thus the grid and your application code would be to messy and very error prone. If you are using full row edit, then you are blocked from using popup editors.
This does not mean that you cannot show a popup from your 'in cell' editor - you are free to do that - however the responsibility of showing and hiding the popup belongs with your editor. You may want to use the grids focus events to hide the popups when the user tabs or clicks out of the cell.
Full Row Edit Example
The example below shows full row editing. In addition to standard full row editing, the following should also be noted:
The 'Price' column has a custom editor demonstrating how you should implement
focusOut()for this editor are logged to the console.
- The 'Suppress Navigable' column is not navigable using tab. In other words, when tabbing around the grid, you cannot tab onto this cel.
- The 'Not Editable' column is not editable, so when the row goes into edit mode, this column is not impacted. Also when editing, this column is not navigated to when tabbing.
- The button will start editing line two. It uses the api to start editing a cell, however the result is the whole row will become editable starting with the specified cell.
rowValueChangedevents are logged to console.
The CSS class
ag-row-editingchanges the background color to highlight the editing row.
Single Click, Double Click, No Click Editing
Double Click Editing
The default is for the grid to enter editing when you double click on a cell.
Single Click Editing
To change the default so that a single click starts editing, set the property
This is useful when you want a cell to enter edit mode as soon as you click on it, similar to the experience
you get when inside Excel.
No Click Editing
To change the default so that neither single or double click starts editing, set the property
suppressClickEdit=true. This is useful when you want to start the editing in another way,
such as including a button in your cell renderer.
The grid below has
singleClickEdit=true so that editing will start on a cell when you single click on it.
The grid below has
suppressClickEdit=true so that clicking doesn't started editing. The grid configures a cellRenderer with a button to start editing.
Stop Editing When Grid Loses Focus
By default, the grid will not stop editing the currently editing cell when the grid loses focus. This can be bad if, for example, you have a save button, and you need the grid to stop editing before you execute your save function (eg you want to make sure the edit is saved into the grids state).
If you want the grid to stop editing when focus leaves, set the grid property
By default, the grid not stop editing if you focus outside. The default is good for custom popup cell editors as these can have the focus leave the grid (eg if using a popup calendar widget). This would be bad as the grid would stop editing as soon as your external popup appeared.
The example below shows the editing with
Notice the following:
- Double click to start editing 'Age', then click outside the grid (on the 'Dummy Save' button, or the dummy text field) and the grid will stop editing.
- Double click to start editing 'Year', a custom popup editor appears, you can click anywhere on the popup editor, but once you click outside the editor, the popup closes.
Controlling keyboard while editing
While editing, the grid will listen to navigation events coming from the keyboard, this includes navigate to next cell,
next row... If you want to avoid this events from being consumed by the grid you can do so by configuring
The following example shows a simple example where each cell contains a number and the arrows are used to manipulate its value. Note how the arrows are used to increase or decrease the value of the cell while editing and they are not used for navigation