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// Copyright 2018 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package cell implements cell options and attributes.
package cell
// Option is used to provide options for cells on a 2-D terminal.
type Option interface {
// Set sets the provided option.
Set(*Options)
}
// Options stores the provided options.
type Options struct {
FgColor Color
BgColor Color
}
// Set allows existing options to be passed as an option.
func (o *Options) Set(other *Options) {
*other = *o
}
// NewOptions returns a new Options instance after applying the provided options.
func NewOptions(opts ...Option) *Options {
o := &Options{}
for _, opt := range opts {
opt.Set(o)
}
return o
}
// option implements Option.
type option func(*Options)
// Set implements Option.set.
func (co option) Set(opts *Options) {
co(opts)
}
// FgColor sets the foreground color of the cell.
func FgColor(color Color) Option {
return option(func(co *Options) {
co.FgColor = color
})
}
// BgColor sets the background color of the cell.
func BgColor(color Color) Option {
return option(func(co *Options) {
co.BgColor = color
})
}
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