74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
package objects
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import "fmt"
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import "git.tebibyte.media/tomo/tomo"
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import "git.tebibyte.media/tomo/tomo/text"
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import "git.tebibyte.media/tomo/tomo/event"
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var _ tomo.Object = new(Heading)
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// Heading is a label that denotes the start of some section of content. It can
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// have a level from 0 to 2, with 0 being the most prominent and 2 being the
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// most subtle.
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//
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// Tags:
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// - [0] The heading has a level of 0 (most prominent).
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// - [1] The heading has a level of 1.
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// - [2] The heading has a level of 2 (least prominent).
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type Heading struct {
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box tomo.TextBox
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}
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// NewHeading creates a new section heading. The level can be from 0 to 2.
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func NewHeading (level int, text string) *Heading {
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if level < 0 { level = 0 }
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if level > 2 { level = 2 }
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this := &Heading { box: tomo.NewTextBox() }
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this.box.SetRole(tomo.R("objects", "Heading"))
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this.box.SetTag(fmt.Sprint(level), true)
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this.SetText(text)
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this.box.SetSelectable(true)
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this.box.SetFocusable(true)
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return this
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}
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// GetBox returns the underlying box.
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func (this *Heading) GetBox () tomo.Box {
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return this.box
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}
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// SetFocused sets whether or not this heading has keyboard focus. If set to
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// true, this method will steal focus away from whichever object currently has
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// focus.
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func (this *Heading) SetFocused (focused bool) {
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this.box.SetFocused(focused)
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}
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// SetText sets the text content of the heading.
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func (this *Heading) SetText (text string) {
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this.box.SetText(text)
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}
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// Select sets the text cursor or selection.
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func (this *Heading) Select (dot text.Dot) {
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this.box.Select(dot)
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}
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// Dot returns the text cursor or selection.
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func (this *Heading) Dot () text.Dot {
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return this.box.Dot()
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}
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// OnDotChange specifies a function to be called when the text cursor or
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// selection changes.
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func (this *Heading) OnDotChange (callback func ()) event.Cookie {
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return this.box.OnDotChange(callback)
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}
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// NewMenuHeading creatss a new heading for use in menus.
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func NewMenuHeading (text string) *Heading {
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heading := NewHeading(0, text)
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heading.box.SetTag("menu", true)
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return heading
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}
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