gdf: Constructor for a data frame editor

In jverzani/gWidgets2: Rewrite of gWidgets API for Simplified GUI Construction

Description

Implementation varies wildly, but should provide at minimum functionality of edit.data.frame. A single mouse click on a cell should select that cell, a double click should initiate editing of that cell.

generic for toolkit dispatch

Assign handler to be called when a cell, row or column changes

For gdf svalue refers to the selected values.

visible is used to refer to which rows are being shown.

Usage

gdf(items = NULL, handler = NULL, action = NULL, container = NULL, ...,
  toolkit = guiToolkit())

.gdf(toolkit, items = NULL, handler = NULL, action = NULL,
  container = NULL, ...)

## S3 method for class 'GDf'
addHandlerChanged(obj, handler, action = NULL, ...)

## S3 method for class 'GDf'
svalue(obj, index = NULL, drop = TRUE, ...)

## S3 replacement method for class 'GDf'
 visible(obj) <- value

Arguments

items	data frame to edit
handler	called on cell change
action	passed to handler
container	parent container
...	passed to container's add method
toolkit	toolkit
obj	object receiving event and emitting a signal to the handler
index	NULL or logical. If TRUE and widget supports it an index, instead of a value will be returned.
drop	NULL or logical. If widget supports it, drop will work as it does in a data frame or perhaps someother means.
value	value to assign for selection or property

Details

Contents of the data frame can be accessed via [ and manipulated with [<-.

The save_data reference class method can be called to save the data into a variable with the specified name.

example in inst/examples/ex-gdf.R

Value

An object of class gDf.

jverzani/gWidgets2 documentation built on May 20, 2019, 5:17 a.m.