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