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const ansi = require('../util/ansi')
const unic = require('../util/unichars')
const DisplayElement = require('./DisplayElement')
const Label = require('./Label')
module.exports = class Pane extends DisplayElement {
// A simple rectangular framed pane.
constructor() {
super()
this.frameColor = null
this.hPadding = 1
this.vPadding = 1
}
drawTo(writable) {
this.drawFrame(writable)
super.drawTo(writable)
}
drawFrame(writable, debug=false) {
writable.write(ansi.setForeground(this.frameColor))
const left = this.absLeft
const right = this.absRight
const top = this.absTop
const bottom = this.absBottom
// Background
// (TODO) Transparent background (that dimmed everything behind it) would
// be cool at some point!
for (let y = top + 1; y <= bottom - 1; y++) {
writable.write(ansi.moveCursor(y, left))
writable.write(' '.repeat(this.w))
}
// Left/right edges
for (let x = left + 1; x <= right - 1; x++) {
writable.write(ansi.moveCursor(top, x))
writable.write(unic.BOX_H)
writable.write(ansi.moveCursor(bottom, x))
writable.write(unic.BOX_H)
}
// Top/bottom edges
for (let y = top + 1; y <= bottom - 1; y++) {
writable.write(ansi.moveCursor(y, left))
writable.write(unic.BOX_V)
writable.write(ansi.moveCursor(y, right))
writable.write(unic.BOX_V)
}
// Corners
writable.write(ansi.moveCursor(top, left))
writable.write(unic.BOX_CORNER_TL)
writable.write(ansi.moveCursor(top, right))
writable.write(unic.BOX_CORNER_TR)
writable.write(ansi.moveCursor(bottom, left))
writable.write(unic.BOX_CORNER_BL)
writable.write(ansi.moveCursor(bottom, right))
writable.write(unic.BOX_CORNER_BR)
// Debug info
if (debug) {
writable.write(ansi.moveCursor(6, 8))
writable.write(
`x: ${this.x}; y: ${this.y}; w: ${this.w}; h: ${this.h}`)
writable.write(ansi.moveCursor(7, 8))
writable.write(`AbsX: ${this.absX}; AbsY: ${this.absY}`)
writable.write(ansi.moveCursor(8, 8))
writable.write(`Left: ${this.left}; Right: ${this.right}`)
writable.write(ansi.moveCursor(9, 8))
writable.write(`Top: ${this.top}; Bottom: ${this.bottom}`)
}
writable.write(ansi.setForeground(ansi.C_RESET))
}
static alert(parent, text) {
// Show an alert pane in the bottom left of the given parent element for
// a couple seconds.
const pane = new Pane()
pane.frameColor = ansi.C_WHITE
pane.w = text.length + 2
pane.h = 3
parent.addChild(pane)
const label = new Label(text)
label.textAttributes = [ansi.C_WHITE]
pane.addChild(label)
setTimeout(() => {
parent.removeChild(pane)
}, 2000)
}
}
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