plugins/ui-designer/src/com/intellij/uiDesigner/radComponents/XYLayoutManagerImpl.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 package com.intellij.uiDesigner.radComponents;
  17
  18 import com.intellij.uiDesigner.shared.XYLayoutManager;
  19
  20 import javax.swing.*;
  21 import java.awt.*;
  22
  23 /**
  24  * @author Anton Katilin
  25  * @author Vladimir Kondratyev
  26  */
  27 public final class XYLayoutManagerImpl extends XYLayoutManager {
  28   private final Dimension myPreferredSize;
  29   private static final Dimension MIN_SIZE = new Dimension(20,20);
  30
  31   public XYLayoutManagerImpl(){
  32     myPreferredSize = new Dimension();
  33   }
  34
  35   public void setPreferredSize(final Dimension size) {
  36     myPreferredSize.setSize(size);
  37   }
  38
  39   public Dimension maximumLayoutSize(final Container container){
  40     return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
  41   }
  42
  43   public Dimension preferredLayoutSize(final Container container){
  44     return myPreferredSize;
  45   }
  46
  47   public void layoutContainer(final Container parent){
  48   }
  49
  50   public Dimension minimumLayoutSize(final Container container){
  51     final Container parent = container.getParent();
  52     if (!(parent instanceof JComponent)) {
  53       return MIN_SIZE;
  54     }
  55     final RadComponent component = (RadComponent)((JComponent)parent).getClientProperty(RadComponent.CLIENT_PROP_RAD_COMPONENT);
  56     if (component == null) {
  57       return MIN_SIZE;
  58     }
  59
  60     // the following code prevents XYs placed in Grid from being shrunk
  61     final RadComponent radParent = component.getParent();
  62     if (radParent instanceof RadContainer && (((RadContainer)radParent).getLayoutManager().isGrid())) {
  63       return new Dimension(
  64         Math.max(myPreferredSize.width, MIN_SIZE.width),
  65         Math.max(myPreferredSize.height, MIN_SIZE.height)
  66       );
  67     }
  68     return MIN_SIZE;
  69   }
  70 }