Add Style configuration

The following functionalities are added to configure aerc ui styles.
- Read stylesets from file with very basic fnmatch wildcard matching
- Add default styleset
- Support different stylesets as part of UiConfig allowing contextual
  styles.
- Move widgets/ui elements to use the stylesets.
- Add configuration manual for the styleset

1 files changed, 18 insertions, 16 deletions

diff --git a/widgets/pgpinfo.go b/widgets/pgpinfo.go
index 5da91412..94fb8772 100644
--- a/widgets/pgpinfo.go
+++ b/widgets/pgpinfo.go
@@ -3,40 +3,40 @@ package widgets
 import (
 	"errors"
 
+	"git.sr.ht/~sircmpwn/aerc/config"
 	"git.sr.ht/~sircmpwn/aerc/lib/ui"
 
-	"github.com/gdamore/tcell"
 	"golang.org/x/crypto/openpgp"
 	pgperrors "golang.org/x/crypto/openpgp/errors"
 )
 
 type PGPInfo struct {
 	ui.Invalidatable
-	details *openpgp.MessageDetails
+	details  *openpgp.MessageDetails
+	uiConfig config.UIConfig
 }
 
-func NewPGPInfo(details *openpgp.MessageDetails) *PGPInfo {
-	return &PGPInfo{details: details}
+func NewPGPInfo(details *openpgp.MessageDetails, uiConfig config.UIConfig) *PGPInfo {
+	return &PGPInfo{details: details, uiConfig: uiConfig}
 }
 
 func (p *PGPInfo) DrawSignature(ctx *ui.Context) {
-	errorStyle := tcell.StyleDefault.Background(tcell.ColorRed).
-		Foreground(tcell.ColorWhite).Bold(true)
-	softErrorStyle := tcell.StyleDefault.Foreground(tcell.ColorYellow).Bold(true)
-	validStyle := tcell.StyleDefault.Foreground(tcell.ColorGreen).Bold(true)
+	errorStyle := p.uiConfig.GetStyle(config.STYLE_ERROR)
+	warningStyle := p.uiConfig.GetStyle(config.STYLE_WARNING)
+	validStyle := p.uiConfig.GetStyle(config.STYLE_SUCCESS)
+	defaultStyle := p.uiConfig.GetStyle(config.STYLE_DEFAULT)
 
 	// TODO: Nicer prompt for TOFU, fetch from keyserver, etc
 	if errors.Is(p.details.SignatureError, pgperrors.ErrUnknownIssuer) ||
 		p.details.SignedBy == nil {
 
-		x := ctx.Printf(0, 0, softErrorStyle, "*")
-		x += ctx.Printf(x, 0, tcell.StyleDefault,
+		x := ctx.Printf(0, 0, warningStyle, "*")
+		x += ctx.Printf(x, 0, defaultStyle,
 			" Signed with unknown key (%8X); authenticity unknown",
 			p.details.SignedByKeyId)
 	} else if p.details.SignatureError != nil {
 		x := ctx.Printf(0, 0, errorStyle, "Invalid signature!")
-		x += ctx.Printf(x, 0, tcell.StyleDefault.
-			Foreground(tcell.ColorRed).Bold(true),
+		x += ctx.Printf(x, 0, errorStyle,
 			" This message may have been tampered with! (%s)",
 			p.details.SignatureError.Error())
 	} else {
@@ -44,24 +44,26 @@ func (p *PGPInfo) DrawSignature(ctx *ui.Context) {
 		ident := entity.PrimaryIdentity()
 
 		x := ctx.Printf(0, 0, validStyle, "✓ Authentic ")
-		x += ctx.Printf(x, 0, tcell.StyleDefault,
+		x += ctx.Printf(x, 0, defaultStyle,
 			"Signature from %s (%8X)",
 			ident.Name, p.details.SignedByKeyId)
 	}
 }
 
 func (p *PGPInfo) DrawEncryption(ctx *ui.Context, y int) {
-	validStyle := tcell.StyleDefault.Foreground(tcell.ColorGreen).Bold(true)
+	validStyle := p.uiConfig.GetStyle(config.STYLE_SUCCESS)
+	defaultStyle := p.uiConfig.GetStyle(config.STYLE_DEFAULT)
 	entity := p.details.DecryptedWith.Entity
 	ident := entity.PrimaryIdentity()
 
 	x := ctx.Printf(0, y, validStyle, "✓ Encrypted ")
-	x += ctx.Printf(x, y, tcell.StyleDefault,
+	x += ctx.Printf(x, y, defaultStyle,
 		"To %s (%8X) ", ident.Name, p.details.DecryptedWith.PublicKey.KeyId)
 }
 
 func (p *PGPInfo) Draw(ctx *ui.Context) {
-	ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault)
+	defaultStyle := p.uiConfig.GetStyle(config.STYLE_DEFAULT)
+	ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', defaultStyle)
 	if p.details.IsSigned && p.details.IsEncrypted {
 		p.DrawSignature(ctx)
 		p.DrawEncryption(ctx, 1)