plugins/ui-designer/src/com/intellij/uiDesigner/designSurface/NoDropLocation.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.intellij.uiDesigner.designSurface;
  18
  19 import com.intellij.uiDesigner.radComponents.RadContainer;
  20 import com.intellij.uiDesigner.radComponents.RadComponent;
  21 import com.intellij.uiDesigner.core.GridConstraints;
  22 import org.jetbrains.annotations.Nullable;
  23
  24 /**
  25  * @author yole
  26  */
  27 public class NoDropLocation implements ComponentDropLocation {
  28   public static final NoDropLocation INSTANCE = new NoDropLocation();
  29
  30   private NoDropLocation() {
  31   }
  32
  33   public RadContainer getContainer() {
  34     return null;
  35   }
  36
  37   public boolean canDrop(ComponentDragObject dragObject) {
  38     return false;
  39   }
  40
  41   public void placeFeedback(FeedbackLayer feedbackLayer, ComponentDragObject dragObject) {
  42   }
  43
  44   public void processDrop(GuiEditor editor,
  45                           RadComponent[] components,
  46                           GridConstraints[] constraintsToAdjust,
  47                           ComponentDragObject dragObject) {
  48   }
  49
  50   @Nullable
  51   public ComponentDropLocation getAdjacentLocation(Direction direction) {
  52     return null;
  53   }
  54 }