design/designer-form/src/main/java/com/fr/design/mainframe/FormEditorKeyListener.java

package com.fr.design.mainframe;

import com.fr.base.BaseUtils;
import com.fr.common.inputevent.InputEventBaseOnOS;
import java.awt.Cursor;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import com.fr.design.designer.beans.events.DesignerEvent;
import com.fr.design.designer.creator.XCreator;
import com.fr.design.designer.creator.XCreatorUtils;
import com.fr.design.designer.creator.XLayoutContainer;
import com.fr.design.designer.creator.XWAbsoluteLayout;

public class FormEditorKeyListener extends KeyAdapter{
	private static final Cursor ADDCURSOR = Toolkit.getDefaultToolkit().createCustomCursor(
			BaseUtils.readImage("/com/fr/design/images/form/designer/cursor/add.png"), new Point(0, 0),
			"addCursor");
	private FormDesigner designer;
	private boolean moved;

	public FormEditorKeyListener(FormDesigner formEditor) {
		this.designer = formEditor;
	}

	@Override
	public void keyPressed(KeyEvent e) {
		boolean shiftSelecting = e.isShiftDown();
		boolean ctrlSelecting = InputEventBaseOnOS.isControlDown(e);
		int currentCursorType = this.designer.getCursor().getType();
		boolean shiftResizing = e.isShiftDown() && ( Cursor.SW_RESIZE_CURSOR <= currentCursorType && currentCursorType <= Cursor.E_RESIZE_CURSOR);
		if((shiftSelecting || ctrlSelecting) && !shiftResizing) {
			designer.setCursor(ADDCURSOR);
		}
		int code = e.getKeyCode();
		XCreator creator = designer.getSelectionModel().getSelection().getSelectedCreator();
		XLayoutContainer container;
		if(creator == null ||  (container =XCreatorUtils.getParentXLayoutContainer(creator)) == null || !(container instanceof XWAbsoluteLayout)) {
			return;
		}
		moved = true;

		switch (code) {
			case KeyEvent.VK_LEFT:
				designer.getSelectionModel().move(-1, 0);
				break;
			case KeyEvent.VK_RIGHT:
				designer.getSelectionModel().move(1, 0);
				break;
			case KeyEvent.VK_UP:
				designer.getSelectionModel().move(0, -1);
				break;
			case KeyEvent.VK_DOWN:
				designer.getSelectionModel().move(0, 1);
				break;
			default:
				moved = false;
		}
	}

	public void keyReleased(KeyEvent e) {
		boolean shiftSelecting = e.isShiftDown();
		boolean ctrlSelecting = InputEventBaseOnOS.isControlDown(e);
		int currentCursorType = this.designer.getCursor().getType();
		boolean shiftResizing = e.getKeyCode() == KeyEvent.VK_SHIFT && ( Cursor.SW_RESIZE_CURSOR <= currentCursorType && currentCursorType <= Cursor.E_RESIZE_CURSOR);
		if(!(shiftSelecting || ctrlSelecting) && !shiftResizing) {
			designer.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
		}
		if (moved) {
			designer.getEditListenerTable().fireCreatorModified(
					designer.getSelectionModel().getSelection().getSelectedCreator(), DesignerEvent.CREATOR_RESIZED);
			moved = false;
		}
	}
}