107 lines
2.0 KiB
Go
107 lines
2.0 KiB
Go
// 13 february 2014
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package ui
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import (
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"sync"
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)
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// A Checkbox is a clickable square with a label. The square can be either checked or unchecked. Checkboxes start out unchecked.
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type Checkbox struct {
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lock sync.Mutex
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created bool
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sysData *sysData
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initText string
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initCheck bool
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}
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// NewCheckbox creates a new checkbox with the specified text.
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func NewCheckbox(text string) (c *Checkbox) {
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return &Checkbox{
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sysData: mksysdata(c_checkbox),
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initText: text,
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}
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}
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// SetText sets the checkbox's text.
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func (c *Checkbox) SetText(text string) {
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c.lock.Lock()
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defer c.lock.Unlock()
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if c.created {
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c.sysData.setText(text)
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return
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}
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c.initText = text
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}
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// Text returns the checkbox's text.
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func (c *Checkbox) Text() string {
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c.lock.Lock()
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defer c.lock.Unlock()
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if c.created {
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return c.sysData.text()
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}
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return c.initText
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}
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// SetChecked() changes the checked state of the Checkbox.
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func (c *Checkbox) SetChecked(checked bool) {
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c.lock.Lock()
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defer c.lock.Unlock()
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if c.created {
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c.sysData.setChecked(checked)
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return
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}
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c.initCheck = checked
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}
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// Checked() returns whether or not the Checkbox has been checked.
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func (c *Checkbox) Checked() bool {
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c.lock.Lock()
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defer c.lock.Unlock()
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if c.created {
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return c.sysData.isChecked()
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}
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return c.initCheck
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}
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func (c *Checkbox) make(window *sysData) error {
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c.lock.Lock()
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defer c.lock.Unlock()
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err := c.sysData.make(window)
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if err != nil {
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return err
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}
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c.sysData.setText(c.initText)
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c.sysData.setChecked(c.initCheck)
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c.created = true
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return nil
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}
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func (c *Checkbox) allocate(x int, y int, width int, height int, d *sysSizeData) []*allocation {
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return []*allocation{&allocation{
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x: x,
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y: y,
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width: width,
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height: height,
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this: c,
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}}
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}
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func (c *Checkbox) preferredSize(d *sysSizeData) (width int, height int) {
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return c.sysData.preferredSize(d)
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}
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func (c *Checkbox) commitResize(a *allocation, d *sysSizeData) {
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c.sysData.commitResize(a, d)
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}
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func (c *Checkbox) getAuxResizeInfo(d *sysSizeData) {
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c.sysData.getAuxResizeInfo(d)
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}
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