refactor(main): 重构目录选择逻辑和界面布局

main.go

@@ -17,78 +17,58 @@ func main() {
 	myWindow.Resize(fyne.NewSize(640, 480))
 
 	// 创建显示框
-	displayBox1 := widget.NewLabel("未选择")
-	displayBox2 := widget.NewLabel("未选择")
+	sourceDirLabel := widget.NewLabel("未选择")
+	targetDirLabel := widget.NewLabel("未选择")
 	displayBoxInfo := canvas.NewText("", colornames.Blue)
 
 	// 创建目录选择框
-	dirSelect1 := widget.NewButton("选择作品存放目录", func() {
-		dirDialog := dialog.NewFolderOpen(func(d fyne.ListableURI, err error) {
-			if err == nil && d != nil {
-				displayBox1.SetText(d.Path())
+	selectSourceDir := widget.NewButton("选择作品存放目录", func() {
+		dialog.ShowFolderOpen(func(uri fyne.ListableURI, err error) {
+			if err != nil {
+				sourceDirLabel.SetText("选择目录失败: " + err.Error())
+				return
+			}
+			if uri != nil {
+				sourceDirLabel.SetText(uri.Path())
 			}
 		}, myWindow)
-		dirDialog.Show()
 	})
 
-	dirSelect2 := widget.NewButton("选择输出目录", func() {
-		dirDialog := dialog.NewFolderOpen(func(d fyne.ListableURI, err error) {
-			if err == nil && d != nil {
-				displayBox2.SetText(d.Path())
+	selectTargetDir := widget.NewButton("选择输出目录", func() {
+		dialog.ShowFolderOpen(func(uri fyne.ListableURI, err error) {
+			if err != nil {
+				targetDirLabel.SetText("选择目录失败: " + err.Error())
+				return
+			}
+			if uri != nil {
+				targetDirLabel.SetText(uri.Path())
 			}
 		}, myWindow)
-		dirDialog.Show()
 	})
 
-	// 创建确定按钮
-	okButton := widget.NewButton("确  定", func() {
-		dir1 := displayBox1.Text
-		dir2 := displayBox2.Text
-
-		displayBoxInfo.Color = colornames.Blue
-		displayBoxInfo.Text = "处理中ing..."
-
-		crawler := NewCrawler(dir1, dir2)
-		if err := crawler.Handle(); err != nil {
-			displayBoxInfo.Color = colornames.Red
-			displayBoxInfo.Text = err.Error()
-		} else {
-			displayBoxInfo.Color = colornames.Green
-			displayBoxInfo.Text = "处理完成"
-		}
-	})
-
-	// 创建水平布局，将目录选择框和显示框并排排列
-	dirSelect1WithDisplay := container.NewHBox(
-		dirSelect1,
-		displayBox1,
-	)
-
-	dirSelect2WithDisplay := container.NewHBox(
-		dirSelect2,
-		displayBox2,
-	)
-
-	dirSelect3WithDisplay := container.NewHBox(
-		layout.NewSpacer(),
-		displayBoxInfo,
-		layout.NewSpacer(),
-	)
-
-	// 创建水平布局，将确定按钮居中
-	okButtonContainer := container.NewHBox(
-		layout.NewSpacer(),
-		okButton,
-		layout.NewSpacer(),
-	)
-
-	// 创建垂直布局，将上述水平布局和确定按钮垂直排列
+	// 创建主布局
 	content := container.NewVBox(
-		dirSelect1WithDisplay,
-		dirSelect2WithDisplay,
-		dirSelect3WithDisplay,
+		container.NewHBox(selectSourceDir, sourceDirLabel),
+		container.NewHBox(selectTargetDir, targetDirLabel),
+		container.NewCenter(displayBoxInfo),
 		layout.NewSpacer(),
-		okButtonContainer,
+		container.NewCenter(
+			widget.NewButton("开始处理", func() {
+				displayBoxInfo.Text = "处理中..."
+				displayBoxInfo.Color = colornames.Blue
+				displayBoxInfo.Refresh()
+
+				crawler := NewCrawler(sourceDirLabel.Text, targetDirLabel.Text)
+				if err := crawler.Handle(); err != nil {
+					displayBoxInfo.Text = "处理失败: " + err.Error()
+					displayBoxInfo.Color = colornames.Red
+				} else {
+					displayBoxInfo.Text = "处理完成"
+					displayBoxInfo.Color = colornames.Green
+				}
+				displayBoxInfo.Refresh()
+			}),
+		),
 	)
 
 	myWindow.SetContent(content)