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// 13 february 2014
package ui
import (
"sync"
)
// A Checkbox is a clickable square with a label. The square can be either checked or unchecked.
type Checkbox struct {
// TODO provide a channel for broadcasting check changes
lock sync.Mutex
created bool
sysData *sysData
initText string
initCheck bool
}
// NewCheckbox creates a new checkbox with the specified text.
func NewCheckbox(text string) (c *Checkbox) {
return &Checkbox{
sysData: mksysdata(c_checkbox),
initText: text,
}
}
// SetText sets the checkbox's text.
func (c *Checkbox) SetText(text string) {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
c.sysData.setText(text)
return
}
c.initText = text
}
// Text returns the checkbox's text.
func (c *Checkbox) Text() string {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
return c.sysData.text()
}
return c.initText
}
// Checked() returns whether or not the checkbox has been checked.
func (c *Checkbox) Checked() bool {
c.lock.Lock()
defer c.lock.Unlock()
// TODO if not created
return c.sysData.isChecked()
}
func (c *Checkbox) make(window *sysData) error {
c.lock.Lock()
defer c.lock.Unlock()
err := c.sysData.make(c.initText, window)
if err != nil {
return err
}
c.created = true
return nil
}
func (c *Checkbox) setRect(x int, y int, width int, height int, winheight int) error {
c.lock.Lock()
defer c.lock.Unlock()
return c.sysData.setRect(x, y, width, height, winheight)
}
func (c *Checkbox) preferredSize() (width int, height int) {
c.lock.Lock()
defer c.lock.Unlock()
return c.sysData.preferredSize()
}
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