noborus · noborus · Aug 18, 2025 · Aug 17, 2025 · Aug 18, 2025 · Aug 18, 2025
diff --git a/examples/header/main.go b/examples/header/main.go
@@ -0,0 +1,21 @@
+package main
+
+import (
+	"github.com/noborus/ov/oviewer"
+)
+
+func main() {
+	ov, err := oviewer.Open("main.go")
+	if err != nil {
+		panic(err)
+	}
+	// Set header lines before Run().
+	// Options must be set before Run(); do not use Config directly.
+	ov.Config.General.SetHeader(1)
+	ov.Config.General.SetStatusLine(false)
+	ov.SetConfig(ov.Config)
+
+	if err := ov.Run(); err != nil {
+		panic(err)
+	}
+}
diff --git a/examples/search/main.go b/examples/search/main.go
@@ -14,7 +14,25 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-
+	// All Documents.
+	/*
+		ov.Config.General.Style = oviewer.StyleConfig{
+			SearchHighlight: &oviewer.OVStyle{
+				Foreground: "gold",
+				Reverse:    true,
+				Blink:      true,
+			},
+		}
+		ov.SetConfig(ov.Config)
+	*/
+	// Only this Document.
+	ov.Doc.General.Style = oviewer.StyleConfig{
+		SearchHighlight: &oviewer.OVStyle{
+			Foreground: "gold",
+			Reverse:    true,
+			Blink:      true,
+		},
+	}
 	var wg sync.WaitGroup
 
 	wg.Add(1)
@@ -25,11 +43,6 @@ func main() {
 		}
 	}()
 	time.Sleep(time.Second * 1)
-	ov.Doc.Style.SearchHighlight = oviewer.OVStyle{
-		Foreground: "gold",
-		Reverse:    true,
-		Blink:      true,
-	}
 	ov.MoveBottom()
 	ov.BackSearch("main")
 

diff --git a/examples/tail/main.go b/examples/tail/main.go
@@ -27,9 +27,8 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	// Set in general as individual modes will be overwritten.
-	ov.Doc.FollowMode = true
-	ov.Doc.MultiColorWords = []string{"error:", "info:", "warn:", "debug:"}
+	ov.Doc.General.SetMultiColorWords([]string{"error:", "info:", "warn:", "debug:"})
+	ov.Doc.General.SetFollowMode(true)
 	if err := ov.Run(); err != nil {
 		log.Fatal(err)
 	}

diff --git a/oviewer/config.go b/oviewer/config.go
@@ -88,84 +88,6 @@ type Config struct {
 	deprecatedStyleConfig `yaml:",inline" mapstructure:",squash"`
 }
 
-// General is the general configuration.
-type General struct {
-	// Converter is the converter name.
-	Converter *string
-	// Align is the alignment.
-	Align *bool
-	// Raw is the raw setting.
-	Raw *bool
-	// Caption is an additional caption to display after the file name.
-	Caption *string
-	// ColumnDelimiter is a column delimiter.
-	ColumnDelimiter *string
-	// SectionDelimiter is a section delimiter.
-	SectionDelimiter *string
-	// Specified string for jumpTarget.
-	JumpTarget *string
-	// MultiColorWords specifies words to color separated by spaces.
-	MultiColorWords *[]string
-
-	// TabWidth is tab stop num.
-	TabWidth *int
-	// Header is number of header lines to be fixed.
-	Header *int
-	// VerticalHeader is the number of vertical header lines.
-	VerticalHeader *int
-	// HeaderColumn is the number of columns from the left to be fixed.
-	// If 0 is specified, no columns are fixed.
-	HeaderColumn *int
-	// SkipLines is the rows to skip.
-	SkipLines *int
-	// WatchInterval is the watch interval (seconds).
-	WatchInterval *int
-	// MarkStyleWidth is width to apply the style of the marked line.
-	MarkStyleWidth *int
-	// SectionStartPosition is a section start position.
-	SectionStartPosition *int
-	// SectionHeaderNum is the number of lines in the section header.
-	SectionHeaderNum *int
-	// HScrollWidth is the horizontal scroll width.
-	HScrollWidth *string
-	// HScrollWidthNum is the horizontal scroll width.
-	HScrollWidthNum *int
-	// RulerType is the ruler type (0: none, 1: relative, 2: absolute).
-	RulerType *RulerType
-	// AlternateRows alternately style rows.
-	AlternateRows *bool
-	// ColumnMode is column mode.
-	ColumnMode *bool
-	// ColumnWidth is column width mode.
-	ColumnWidth *bool
-	// ColumnRainbow is column rainbow.
-	ColumnRainbow *bool
-	// LineNumMode displays line numbers.
-	LineNumMode *bool
-	// Wrap is Wrap mode.
-	WrapMode *bool
-	// FollowMode is the follow mode.
-	FollowMode *bool
-	// FollowAll is a follow mode for all documents.
-	FollowAll *bool
-	// FollowSection is a follow mode that uses section instead of line.
-	FollowSection *bool
-	// FollowName is the mode to follow files by name.
-	FollowName *bool
-	// PlainMode is whether to enable the original character decoration.
-	PlainMode *bool
-	// SectionHeader is whether to display the section header.
-	SectionHeader *bool
-	// HideOtherSection is whether to hide other sections.
-	HideOtherSection *bool
-	// StatusLine indicates whether to hide the status line.
-	StatusLine *bool
-	// Prompt is the prompt configuration.
-	Prompt PromptConfig
-	// Style is the style setting.
-	Style StyleConfig
-}
-
 // PromptConfigNormal is the normal prompt setting.
 type PromptConfigNormal struct {
 	// ShowFilename controls whether to display filename.

diff --git a/oviewer/document.go b/oviewer/document.go
@@ -175,6 +175,8 @@ type Document struct {
 	reopenable bool
 	// nonMatch indicates if non-matching lines are searched.
 	nonMatch bool
+	// General is the General settings.
+	General General
 }
 
 // store represents store management.

diff --git a/oviewer/example_test.go b/oviewer/example_test.go
@@ -3,11 +3,27 @@ package oviewer_test
 import (
 	"bytes"
 	"os/exec"
+	"path/filepath"
 	"strings"
+	"testing"
 
+	"github.com/gdamore/tcell/v2"
 	"github.com/noborus/ov/oviewer"
 )
 
+const cwd = ".."
+
+var testdata = filepath.Join(cwd, "testdata")
+
+// This is a function of tcell.NewScreen but can be replaced with mock.
+var tcellNewScreen = tcell.NewScreen
+
+// fakeScreen returns a fake screen.
+func fakeScreen() (tcell.Screen, error) {
+	// width, height := 80, 25
+	return tcell.NewSimulationScreen(""), nil
+}
+
 func ExampleOpen() {
 	ov, err := oviewer.Open("example_test.go")
 	if err != nil {
@@ -78,3 +94,52 @@ func ExampleSearch() {
 		panic(err)
 	}
 }
+
+func TestExample_HeaderOption(t *testing.T) {
+	oviewer.SetTcellNewScreen(fakeScreen)
+	defer func() {
+		oviewer.SetTcellNewScreen(tcell.NewScreen)
+	}()
+	ov, err := oviewer.Open(filepath.Join(testdata, "test.txt"))
+	if err != nil {
+		t.Fatalf("Open failed: %v", err)
+	}
+	ov.Config.General.SetHeader(2)
+	if ov.Config.General.Header == nil || *ov.Config.General.Header != 2 {
+		t.Errorf("Config.General.SetHeader did not set header correctly: got %v", ov.Config.General.Header)
+	}
+}
+
+func TestExample_DocumentGeneral(t *testing.T) {
+	oviewer.SetTcellNewScreen(fakeScreen)
+	defer func() {
+		oviewer.SetTcellNewScreen(tcell.NewScreen)
+	}()
+	ov, err := oviewer.Open(filepath.Join(testdata, "test.txt"))
+	if err != nil {
+		t.Fatalf("Open failed: %v", err)
+	}
+	ov.Doc.General.SetHeader(3)
+	if ov.Doc.General.Header == nil || *ov.Doc.General.Header != 3 {
+		t.Errorf("Doc.General.SetHeader did not set header correctly: got %v", ov.Doc.General.Header)
+	}
+}
+
+func TestExample_FollowMode(t *testing.T) {
+	oviewer.SetTcellNewScreen(fakeScreen)
+	defer func() {
+		oviewer.SetTcellNewScreen(tcell.NewScreen)
+	}()
+	ov, err := oviewer.Open(filepath.Join(testdata, "test.txt"))
+	if err != nil {
+		t.Fatalf("Open failed: %v", err)
+	}
+	ov.Config.General.SetFollowMode(true)
+	if ov.Config.General.FollowMode == nil || *ov.Config.General.FollowMode != true {
+		t.Errorf("Options.SetFollowMode did not set follow mode correctly: got %v", ov.Config.General.FollowMode)
+	}
+	ov.Doc.General.SetFollowMode(false)
+	if ov.Doc.General.FollowMode == nil || *ov.Doc.General.FollowMode != false {
+		t.Errorf("Doc.General.SetFollowMode did not set follow mode correctly: got %v", ov.Doc.General.FollowMode)
+	}
+}