Snackbar's color can be changed according to the message type

- load a separate css file to change the color
- if the assignment failed, the snackbar prompt will be red, otherwise theme color

#story[1278]

src/main/java/seng302/visualiser/controllers/ViewManager.java

@@ -101,9 +101,7 @@ public class ViewManager {
             System.exit(0);
         });
 
-        jfxSnackbar = new JFXSnackbar();
+        jfxSnackbar = new JFXSnackbar(decorator);
-        decorator.getChildren().add(jfxSnackbar);
-        jfxSnackbar.registerSnackbarContainer(decorator);
     }
 
     /**
@@ -228,8 +226,16 @@ public class ViewManager {
      *
      * @param snackbarText text to be displayed.
      */
-    public void showSnackbar(String snackbarText) {
+    public void showSnackbar(String snackbarText, boolean isWarning) {
-        jfxSnackbar.show(snackbarText, 1500);
+        if (isWarning) {
+            decorator.getStylesheets()
+                .add(getClass().getResource("/css/dialogs/Snackbar.css").toExternalForm());
+        } else {
+            if (decorator.getStylesheets().size() > 1) {
+                decorator.getStylesheets().remove(1);
+            }
+        }
+        jfxSnackbar.show(snackbarText, "fuck", 1500);
     }
 
     /**

src/main/java/seng302/visualiser/controllers/dialogs/KeyBindingDialogController.java

@@ -105,8 +105,8 @@ public class KeyBindingDialogController implements Initializable {
     /**
      * Prompt success / failure message for reassigning key action
      */
-    private void showSnackBar(String message) {
+    private void showSnackBar(String message, Boolean isWarning) {
-        ViewManager.getInstance().showSnackbar(message);
+        ViewManager.getInstance().showSnackbar(message, isWarning);
     }
 
     /**
@@ -151,10 +151,10 @@ public class KeyBindingDialogController implements Initializable {
     private void keyPressed(KeyEvent event, Button button) {
         KeyAction buttonAction = buttonActionMap.get(button);
         if (gameKeyBind.bindKeyToAction(event.getCode(), buttonAction)) {
-            showSnackBar(button.getId() + " is set to " + event.getCode().getName());
+            showSnackBar(button.getId() + " is set to " + event.getCode().getName(), false);
             button.setText(gameKeyBind.getKeyCode(buttonAction).getName());
         } else {
-            showSnackBar(event.getCode().getName() + " is already in use");
+            showSnackBar(event.getCode().getName() + " is already in use", true);
         }
         event.consume();
     }

src/main/resources/css/Master.css

@@ -102,16 +102,13 @@
 }
 
 .jfx-snackbar-content {
-    -fx-background-color: WHITE;
+    -fx-background-color: -fx-pp-front-color;
     -fx-padding: 0 5 0 5;
     -fx-spacing: 0 5 0 5;
-    -fx-font-size: 18px;
+    -fx-font-size: 15;
 }
 
 .jfx-snackbar-toast {
     -fx-text-fill: -fx-pp-theme-color;
-}
+    -fx-font-size: 15;
-
-.jfx-snackbar-action {
-    -fx-text-fill: #ff4081;
 }

src/main/resources/css/dialogs/KeyBindingDialog.css

@@ -29,4 +29,16 @@ JFXToggleButton {
 
 #resetBtn:hover {
     -fx-font-size: 20;
+}
+
+.jfx-snackbar-content {
+    -fx-background-color: #323232;
+}
+
+.jfx-snackbar-toast {
+    -fx-text-fill: WHITE;
+}
+
+.jfx-snackbar-action {
+    -fx-text-fill: #ff4081;
 }

src/main/resources/css/dialogs/Snackbar.css

@@ -0,0 +1,4 @@
+/* a separate file to dynamically change snackbar's color */
+.jfx-snackbar-toast {
+    -fx-text-fill: red !important;
+}