The suppressKeyboardEvent callback is used to capture tab events and determine if the user is tabbing forward or backwards. Use ⇧ Shift+ ⇥ Tab to navigate in the reverse direction.At the end of the cell elements, the tab focus moves to the next cell in the next row Click on the top left Natalie Coughlin cell, press the ⇥ Tab key and notice that the button, textbox and link can be tabbed into.See Suppress Keyboard Events.Īn example of this is shown below, enabling keyboard navigation through the custom cell elements when pressing ⇥ Tab and ⇧ Shift+ ⇥ Tab: This is why by default, focusing a grid cell with a custom cell renderer will focus the entire cell instead of any of the elements inside the custom cell renderer.Īdding support for keyboard navigation and focus requires a custom suppressKeyboardEvent function in grid options. When using custom cell renderers, the custom cell renderer is responsible for implementing support for keyboard navigation among its focusable elements. The All Cells method executes a method on all instances of all cell renderers.Note that the getCellRendererInstances() method will return nothing if the grid is scrolled far past the first row showing row virtualisation in action. The First Row Gold method executes a method on the gold cell of the first row only.The Gold method executes a method on all instances of the cell renderer in the gold column.The cell renderer has an arbitrary method medalUserFunction() which prints some data to the console. The medal columns are all using the user defined MedalCellRenderer.The example below demonstrates custom methods on cell renderers called by the application. Due to row and column virtualisation, renderers will only exist for cells that the user can actually see due to horizontal and vertical scrolling. Note that this method will only return instances of the cell renderer that exists. define cellRenderer to be reused const ColourCellRenderer = props => Provide params to a cell renderer using the colDef option cellRendererParams. Provide what currency for your cell renderer to use. For example, you might have a Cell Renderer for formatting currency but you need to On top of the parameters provided by the grid, you can also provide your own parameters. Then the value is finally placed into the DOM, either directly, or by using the chosen colDef.cellRenderer. The value is also optionally passed through a colDef.valueFormatter if it exists. The value comes using either the colDef.field or the colDef.valueGetter. The diagram below (which is taken from the section Cell Content) summarises the steps the grid takes while working out what to render and how to render. The component's props are updated optionally multiple times. Typically get rendered once unless the component is destroyed first. In other words, component instantiation and destruction are always called exactly once. it may never be called, or called multiple times). The component's props are updated 0.n times (i.e.The component's GUI will be inserted into the grid 0 or 1 times (the component could get destroyed first, i.e.The lifecycle of the cell renderer is as follows: Change DetectionĪs mentioned in the section on Change Detection, the refresh of the Cell will not take place if the value getting rendered has not changed. Scrolling the grid vertically causes columns (and their containing cells) to be removed and inserted due to column virtualisation.Īll of the above will result in the component being destroyed and recreated.When you set the data for the whole row, the whole row in the DOM is recreated again from scratch. Calling tData(data) to set new data into a rowNode.The following will not result in the Cell Renderer being refreshed: ![]() If any of the above occur and the grid confirms the data has changed via Change Detection, then the Cell Renderer is refreshed. Calling api.refreshCells() to inform grid data has changed (see Refresh).When editing a cell and editing is stopped, so that cell displays the new value after editing.This is the preferred API way to change one value from outside of the grid. Calling tDataValue(colKey, value) to set a value directly onto the rowNode.The following items are those that do cause refresh to be called: The grid can refresh the data in the browser, but not every refresh / redraw of the grid results in the refresh of your cell renderer. Here we go through some of the finer details. Component RefreshĬomponent Refresh needs a bit more explanation. See the section registering custom components for details on registering and using custom Cell Renderers.
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