plugins/svn4idea/src/org/jetbrains/idea/svn/ConflictState.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 org.jetbrains.idea.svn;
  17
  18 import com.intellij.openapi.util.IconLoader;
  19 import org.jetbrains.annotations.Nullable;
  20
  21 import javax.swing.*;
  22
  23 public enum ConflictState {
  24   none(false, false, false, null),
  25   tree(true, false, false, "/icons/conflictc.png"),
  26   text(false, true, false, "/icons/conflictt.png"),
  27   prop(false, false, true, "/icons/conflictp.png"),
  28   tree_text(true, true, false, "/icons/conflictct.png"), // ? -
  29   tree_prop(true, false, true, "/icons/conflictcp.png"), // now falls but marked
  30   text_prop(false, true, true, "/icons/conflicttp.png"),
  31   all3(true, true, true, "/icons/conflictctp.png");       // ? -
  32
  33   private final boolean myTree;
  34   private final boolean myText;
  35   private final boolean myProperty;
  36   @Nullable
  37   private final Icon myIcon;
  38   private final String myDescription;
  39
  40   private ConflictState(final boolean tree, final boolean text, final boolean property, final String iconPath) {
  41     myTree = tree;
  42     myText = text;
  43     myProperty = property;
  44
  45     if (iconPath != null) {
  46       myIcon = IconLoader.getIcon(iconPath);
  47     } else {
  48       myIcon = null;
  49     }
  50
  51     myDescription = createDescription();
  52   }
  53
  54   @Nullable
  55   private String createDescription() {
  56     int cnt = 0;
  57     final StringBuilder sb = new StringBuilder();
  58     cnt = checkOne(myTree, cnt, sb, "tree");
  59     cnt = checkOne(myText, cnt, sb, "text");
  60     cnt = checkOne(myProperty, cnt, sb, "property");
  61     if (cnt == 0) {
  62       return null;
  63     }
  64     return sb.toString();
  65   }
  66
  67   private int checkOne(final boolean value, final int init, final StringBuilder sb, final String text) {
  68     if (value) {
  69       if (sb.length() > 0) {
  70         sb.append(", ");
  71       }
  72       sb.append(text);
  73       return init + 1;
  74     }
  75     return init;
  76   }
  77
  78   public boolean isTree() {
  79     return myTree;
  80   }
  81
  82   public boolean isText() {
  83     return myText;
  84   }
  85
  86   public boolean isProperty() {
  87     return myProperty;
  88   }
  89
  90   public boolean isConflict() {
  91     return myProperty || myText || myTree;
  92   }
  93
  94   @Nullable
  95   public Icon getIcon() {
  96     return myIcon;
  97   }
  98
  99   public String getDescription() {
 100     return myDescription;
 101   }
 102
 103   public static ConflictState mergeState(final ConflictState leftState, final ConflictState rightState) {
 104     return getInstance(leftState.myTree | rightState.myTree, leftState.myText | rightState.myText,
 105                              leftState.myProperty | rightState.myProperty);
 106   }
 107
 108   public static ConflictState getInstance(final boolean tree, final boolean text, final boolean property) {
 109     final ConflictState[] conflictStates = values();
 110     for (ConflictState state : conflictStates) {
 111       if ((state.isTree() == tree) && (state.isText() == text) && (state.isProperty() == property)) {
 112         return state;
 113       }
 114     }
 115     // all combinations are defined
 116     assert false;
 117     return null;
 118   }
 119 }