plugins/ui-designer/src/com/intellij/uiDesigner/designSurface/ComponentDropLocation.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.RadComponent;
  20 import com.intellij.uiDesigner.radComponents.RadContainer;
  21 import com.intellij.uiDesigner.core.GridConstraints;
  22 import org.jetbrains.annotations.Nullable;
  23
  24 /**
  25  * @author yole
  26  */
  27 public interface ComponentDropLocation {
  28   enum Direction { LEFT, UP, RIGHT, DOWN }
  29
  30   RadContainer getContainer();
  31
  32   boolean canDrop(ComponentDragObject dragObject);
  33
  34   void placeFeedback(FeedbackLayer feedbackLayer, ComponentDragObject dragObject);
  35
  36   void processDrop(GuiEditor editor,
  37                    RadComponent[] components,
  38                    @Nullable GridConstraints[] constraintsToAdjust,
  39                    ComponentDragObject dragObject);
  40
  41   @Nullable
  42   ComponentDropLocation getAdjacentLocation(Direction direction);
  43 }