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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2019 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package html
import (
"fmt"
"math"
"strings"
"maunium.net/go/gomuks/ui/widget"
"maunium.net/go/mauview"
)
type ListEntity struct {
*ContainerEntity
Ordered bool
Start int
}
func digits(num int) int {
if num <= 0 {
return 0
}
return int(math.Floor(math.Log10(float64(num))) + 1)
}
func NewListEntity(ordered bool, start int, children []Entity) *ListEntity {
entity := &ListEntity{
ContainerEntity: &ContainerEntity{
BaseEntity: &BaseEntity{
Tag: "ul",
Block: true,
},
Indent: 2,
Children: children,
},
Ordered: ordered,
Start: start,
}
if ordered {
entity.Tag = "ol"
entity.Indent += digits(start + len(children) - 1)
}
return entity
}
func (le *ListEntity) Clone() Entity {
return &ListEntity{
ContainerEntity: le.ContainerEntity.Clone().(*ContainerEntity),
Ordered: le.Ordered,
Start: le.Start,
}
}
func (le *ListEntity) Draw(screen mauview.Screen) {
width, _ := screen.Size()
proxyScreen := &mauview.ProxyScreen{Parent: screen, OffsetX: le.Indent, Width: width - le.Indent, Style: le.Style}
for i, entity := range le.Children {
proxyScreen.Height = entity.Height()
if le.Ordered {
number := le.Start + i
line := fmt.Sprintf("%d. %s", number, strings.Repeat(" ", le.Indent-2-digits(number)))
widget.WriteLine(screen, mauview.AlignLeft, line, 0, proxyScreen.OffsetY, le.Indent, le.Style)
} else {
screen.SetContent(0, proxyScreen.OffsetY, '●', nil, le.Style)
}
entity.Draw(proxyScreen)
proxyScreen.SetStyle(le.Style)
proxyScreen.OffsetY += entity.Height()
}
}
func (le *ListEntity) PlainText() string {
if len(le.Children) == 0 {
return ""
}
var buf strings.Builder
for i, child := range le.Children {
indent := strings.Repeat(" ", le.Indent)
if le.Ordered {
number := le.Start + i
_, _ = fmt.Fprintf(&buf, "%d. %s", number, strings.Repeat(" ", le.Indent-2-digits(number)))
} else {
buf.WriteString("● ")
}
for j, row := range strings.Split(child.PlainText(), "\n") {
if j != 0 {
buf.WriteRune('\n')
buf.WriteString(indent)
}
buf.WriteString(row)
}
buf.WriteRune('\n')
}
return strings.TrimSpace(buf.String())
}
func (le *ListEntity) String() string {
return fmt.Sprintf("&html.ListEntity{Ordered=%t, Start=%d, Base=%s},\n", le.Ordered, le.Start, le.BaseEntity)
}
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