gomuks/ui/messages/html/base.go
2022-04-15 14:03:08 +03:00

102 lines
2.6 KiB
Go

// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2020 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"
"go.mau.fi/mauview"
"go.mau.fi/tcell"
)
type BaseEntity struct {
// The HTML tag of this entity.
Tag string
// Style for this entity.
Style tcell.Style
// Whether or not this is a block-type entity.
Block bool
// Height to use for entity if both text and children are empty.
DefaultHeight int
prevWidth int
startX int
height int
}
// AdjustStyle changes the style of this text entity.
func (be *BaseEntity) AdjustStyle(fn AdjustStyleFunc) Entity {
be.Style = fn(be.Style)
return be
}
func (be *BaseEntity) IsEmpty() bool {
return false
}
// IsBlock returns whether or not this is a block-type entity.
func (be *BaseEntity) IsBlock() bool {
return be.Block
}
// GetTag returns the HTML tag of this entity.
func (be *BaseEntity) GetTag() string {
return be.Tag
}
// Height returns the render height of this entity.
func (be *BaseEntity) Height() int {
return be.height
}
func (be *BaseEntity) getStartX() int {
return be.startX
}
// Clone creates a copy of this base entity.
func (be *BaseEntity) Clone() Entity {
return &BaseEntity{
Tag: be.Tag,
Style: be.Style,
Block: be.Block,
DefaultHeight: be.DefaultHeight,
}
}
func (be *BaseEntity) PlainText() string {
return ""
}
// String returns a textual representation of this BaseEntity struct.
func (be *BaseEntity) String() string {
return fmt.Sprintf(`&html.BaseEntity{Tag="%s", Style=%d, Block=%t, startX=%d, height=%d}`,
be.Tag, be.Style, be.Block, be.startX, be.height)
}
// CalculateBuffer prepares this entity for rendering with the given parameters.
func (be *BaseEntity) CalculateBuffer(width, startX int, bare bool) int {
be.height = be.DefaultHeight
be.startX = startX
if be.Block {
be.startX = 0
}
return be.startX
}
func (be *BaseEntity) Draw(screen mauview.Screen) {
panic("Called Draw() of BaseEntity")
}