JavaFX边缘方块禁止切换功能失效，事件处理方法排查请求

Hey there! Let's figure out why your handle method is letting all tiles (including edge ones) toggle states. The root issue almost always comes down to missing a check for whether the clicked tile is on the map's boundary.

First, let's look at a common problematic handle method: #

@Override
public void handle(MouseEvent event) {
    Tile clickedTile = (Tile) event.getSource();
    // No check for edge tiles—toggles every tile clicked
    clickedTile.toggleState();
}

This code directly toggles the tile's state without verifying if it's an edge tile. That's why all tiles are responding to clicks.

How to fix it: Add edge tile validation #

You need to add a condition that checks if the clicked tile is on the map's edge. To do this, you'll need:

• The clicked tile's position (x/y coordinates in your grid)
• The total number of rows and columns in your map

Here's the corrected handle method:

@Override
public void handle(MouseEvent event) {
    Tile clickedTile = (Tile) event.getSource();
    int tileX = clickedTile.getX(); // Get tile's column position
    int tileY = clickedTile.getY(); // Get tile's row position
    
    // Replace these with your actual map dimensions
    int totalColumns = yourMap.getTotalColumns(); 
    int totalRows = yourMap.getTotalRows();

    // Check if the tile is on any edge
    boolean isEdgeTile = (tileX == 0) || (tileX == totalColumns - 1)
                      || (tileY == 0) || (tileY == totalRows - 1);

    // Only toggle if it's NOT an edge tile
    if (!isEdgeTile) {
        clickedTile.toggleState();
    }
}

Quick notes to adjust this to your code: #

• Make sure your Tile class has working getX() and getY() methods that return its position in the grid (double-check you aren't mixing up rows and columns!).
• If your map is stored in a 2D array, you can get dimensions like this:

  int totalRows = mapArray.length;
  int totalColumns = mapArray[0].length;
  

• If you've marked edge tiles with a flag (like a boolean isEdge field in Tile), you can simplify the check to if (!clickedTile.isEdge()) instead.

内容的提问来源于stack exchange，提问作者Java Programer