implement progress bar

src/main/kotlin/com/nuculabs/dev/imagetagger/ui/MainPageController.kt

@@ -5,22 +5,25 @@ import com.nuculabs.dev.imagetagger.ui.controls.ImageTagsEntryControl
 import javafx.application.Platform
 import javafx.fxml.FXML
 import javafx.scene.control.Label
+import javafx.scene.control.ProgressBar
 import javafx.scene.control.Separator
 import javafx.scene.layout.VBox
 import javafx.stage.FileChooser
 import java.io.File
 import java.util.logging.Logger
 import javax.imageio.ImageIO
+import kotlin.math.log
 
 
 class MainPageController {
+
     private val logger: Logger = Logger.getLogger("MainPageController")
 
     @FXML
-    private lateinit var verticalBox: VBox
+    private lateinit var progressBar: ProgressBar
 
     @FXML
-    private lateinit var statusLabel: Label
+    private lateinit var verticalBox: VBox
 
     /**
      * Prompts the user to select files then predicts tags for the selected image files.
@@ -33,12 +36,15 @@ class MainPageController {
         fileChooser.title = "Choose images"
         val filePaths = fileChooser.showOpenMultipleDialog(null) ?: return
 
-        statusLabel.isVisible = true
+        progressBar.isVisible = true
 
+        progressBar.progress = 0.0;
         // Create a new thread to predict the images.
         val thread = Thread {
-            try {
-                for (filePath in filePaths) {
+            val filePathsTotal = filePaths.count()
+            logger.info("Analyzing $filePathsTotal files")
+            filePaths.forEachIndexed { index, filePath ->
+                try {
                     // Get predictions for the image.
                     val imageFile = ImageIO.read(File(filePath.absolutePath))
                     val tags: List<String> = imageTagsPrediction.predictTags(imageFile)
@@ -46,13 +52,15 @@ class MainPageController {
                         // Add image and prediction to the view.
                         verticalBox.children.add(ImageTagsEntryControl(filePath.absolutePath, tags))
                         verticalBox.children.add(Separator())
+                        progressBar.progress = (((index + 1) * 100) / filePathsTotal).toDouble() / 100.0
+                        logger.info("Progress ${progressBar.progress}")
                     }
+                } catch (e: Exception) {
+                    logger.warning("Error while predicting images $e")
                 }
-                Platform.runLater {
-                    statusLabel.isVisible = false
-                }
-            } catch (e: Exception) {
-                logger.warning("Error while predicting images $e")
+            }
+            Platform.runLater {
+                progressBar.isVisible = false
             }
         }
         thread.start()

src/main/resources/com/nuculabs/dev/imagetagger/ui/main-window-view.fxml

@@ -25,6 +25,6 @@
   </center>
 
   <bottom>
-    <Label fx:id="statusLabel" visible="false" text="Predicting... please wait" />
+    <ProgressBar fx:id="progressBar" maxWidth="Infinity" visible="false"/>
   </bottom>
 </BorderPane>