本文整理汇总了Java中com.cburch.draw.canvas.Selection.isEmpty方法的典型用法代码示例。如果您正苦于以下问题：Java Selection.isEmpty方法的具体用法？Java Selection.isEmpty怎么用？Java Selection.isEmpty使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.cburch.draw.canvas.Selection的用法示例。
在下文中一共展示了Selection.isEmpty方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: keyTyped
import com.cburch.draw.canvas.Selection; //导入方法依赖的package包/类
@Override
public void keyTyped(Canvas canvas, KeyEvent e) {
char ch = e.getKeyChar();
Selection selected = canvas.getSelection();
if ((ch == '\u0008' || ch == '\u007F') && !selected.isEmpty()) {
ArrayList<CanvasObject> toRemove = new ArrayList<CanvasObject>();
for (CanvasObject shape : selected.getSelected()) {
if (shape.canRemove()) {
toRemove.add(shape);
}
}
if (!toRemove.isEmpty()) {
e.consume();
CanvasModel model = canvas.getModel();
canvas.doAction(new ModelRemoveAction(model, toRemove));
selected.clearSelected();
repaintArea(canvas);
}
} else if (ch == '\u001b' && !selected.isEmpty()) {
selected.clearSelected();
repaintArea(canvas);
}
}