Range selection allows Excel-like range selection of cells. Once enabled, you can drag the mouse over a set of cells to select a range of cells.
Selecting Multiple Ranges
To select multiple ranges, hold down ctrl while making the selection. To prevent multiple
selections though the GUI, set grid property
Ranges with Pinning and Floating
It is possible to select a range that spans pinned and non-pinned sections of the grid. If you do this, the selected range will not have any gaps with regards the column order. For example, if you start the drag on the left pinned area and drag to the right pinned area, then all of the columns in the center area will also be part of the range.
Likewise with floating, no row gaps will occur if a range spans into pinned rows. A range will be continuous between the floating top rows, the center, and the floating bottom rows.
The above two (pinning and floating) can be thought of as follows: If you have a grid with pinning and / or floating, then 'flatten out' the grid in your head so that all rows and columns are visible, then the range selection will work as you would expect in the flattened out version with only full rectangles can be selectable.
Range Change Event
There is one event rangeSelectionChanged to tell you the range selection has changed.
The event has two properties, started and finished, which are true when the selection
is starting or finishing.
For example, if selecting a range of 10 cells in a row, the user will click the first
cell and drag to the last cell. This will result in up to 11 events. The first event
started=true, the last will have
all the intermediary events will have both of these values as false.
Range Selection API
Get the selected ranges using
api.getRangeSelections(). This will return back
a list of range selection objects, each object contain the details of one range. The
structure of the range selection is as follows:
The start and end will be the cells the user started the drag on. Two things to notice about the start and end:
- The start is the first cell the user clicked on and the end is the cell where the user stopped dragging. Do not assume that the start cell's index is numerically before the end cell, as the user could of dragged up. Likewise for columns, the end cell could be to the left or the right of the start cell.
- The columns are listed twice, with start / end columns as well as a complete
column list. This is because the complete list of columns
may not be what you expect, as the grid may
display the columns in a different order to what you provided the grid (the user could
reorder), or columns may be not visible, or column groups may be closed. To avoid all
ambiguity, the exact columns in the range are presented individually in the
Clears the range selection.
Adds a range to the selection. This keeps any prevoius ranges. If you wish to have this range
exclusively, then call clearRangeSelection() first.
There is a grid callback
processCellForClipboard() that allows you to format cells before
going to the clipboard. This can be useful if, for example, you are pasting to Excel and you need to
format dates so that Excel can understand them.
The callback params has the following attributes:
value, node, column, api, columnApi, context, type.
Copy Range Down
When you have more than one row selected in a range, pressing keys Ctrl + D will copy the range down.
Range Selection Example
The example below demonstrates range selection. Use your mouse to drag over the cells
to create selections. Hold down ctrl to select more than one range. The example listens
rangeSelectionChanged event and creates a sum of all the number values
that are in the range (it ignores all non-number values). The
is used to update the eager and lazy figures separately.
The example also shows use of
by making all the athlete names upper case when copying into the clipboard and lowercase when
copying it from the clipboard.
Range Selection Example - Suppress Multi
This example differs from above as
suppressMultiRangeSelection=true which only allows
one range selection even if ctrl key is held down.