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package descriptors
import (
"fmt"
"strings"
ui "github.com/DegustatorPonos/RuinesOfRafdolon/UI"
rl "github.com/gen2brain/raylib-go/raylib"
)
type UIElementDescriptor struct {
Type string
Weight float32
Style StyleDescriptor
// For labels
Text string
Alignment string
// For grid elements
Children []UIElementDescriptor
Spacing float32
}
func InitUIParser() {
typeParsers = map[string]func(*UIElementDescriptor) ui.UIElement {
ui.VoidTypeName: parseAsVoid,
ui.LabelTypeName: parseAsLabel,
ui.GridRowTypeName: parseAsGridRow,
}
}
// The item type to its parser relationship
var typeParsers map[string]func(*UIElementDescriptor) ui.UIElement
func (base *UIElementDescriptor) Parse() (ui.UIElement, error) {
var elemType = strings.ToLower(base.Type)
var descFunc, exists = typeParsers[elemType]
if exists {
return descFunc(base), nil
}
return nil, fmt.Errorf("Unknown UI element type")
}
func parseAsVoid(base *UIElementDescriptor) ui.UIElement {
return &ui.Void {
Weight: base.Weight,
}
}
func parseAsLabel(base *UIElementDescriptor) ui.UIElement {
var alignment ui.TextAlignment
switch strings.ToLower(base.Alignment) {
case "center":
alignment = ui.Center
case "start":
alignment = ui.Start
}
return &ui.Label {
Weight: base.Weight,
Text: base.Text,
Alignment: alignment,
Style: base.Style.Parse(),
}
}
func parseAsGridRow(base *UIElementDescriptor) ui.UIElement {
var outp = ui.GridRow {
Weight: base.Weight,
Spacing: base.Spacing,
Style: base.Style.Parse(),
Objects: make([]ui.UIElement, 0, len(base.Children)),
}
for _, v := range base.Children {
var child, parseErr = v.Parse()
if parseErr != nil {
rl.TraceLog(rl.LogWarning, "Failed to parse a parent element of a grid row: %v", parseErr.Error())
continue
}
outp.Objects = append(outp.Objects, child)
}
return &outp
}
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