1 files changed, 112 insertions, 0 deletions
diff --git a/platform/core-impl/src/com/intellij/ide/util/PropertiesComponentImpl.java b/platform/core-impl/src/com/intellij/ide/util/PropertiesComponentImpl.java
new file mode 100644
index 000000000000..a743569b1798
--- /dev/null
+++ b/platform/core-impl/src/com/intellij/ide/util/PropertiesComponentImpl.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2000-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.ide.util;
+
+import com.intellij.openapi.components.PersistentStateComponent;
+import com.intellij.openapi.util.text.StringUtil;
+import org.jdom.Element;
+import org.jetbrains.annotations.NonNls;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public class PropertiesComponentImpl extends PropertiesComponent implements PersistentStateComponent<Element> {
+  private final Map<String, String> myMap = new LinkedHashMap<String, String>();
+  @NonNls private static final String ELEMENT_PROPERTY = "property";
+  @NonNls private static final String ATTRIBUTE_NAME = "name";
+  @NonNls private static final String ATTRIBUTE_VALUE = "value";
+
+  @NotNull
+  public String getComponentName() {
+    return "PropertiesComponent";
+  }
+
+  PropertiesComponentImpl() {
+  }
+
+  @Override
+  public Element getState() {
+    Element parentNode = new Element("state");
+    for (final String key : myMap.keySet()) {
+      String value = myMap.get(key);
+      if (value != null) {
+        Element element = new Element(ELEMENT_PROPERTY);
+        element.setAttribute(ATTRIBUTE_NAME, key);
+        element.setAttribute(ATTRIBUTE_VALUE, value);
+        parentNode.addContent(element);
+      }
+    }
+    return parentNode;
+  }
+
+  @Override
+  public void loadState(final Element parentNode) {
+    myMap.clear();
+    for (Element e : parentNode.getChildren(ELEMENT_PROPERTY)) {
+      String name = e.getAttributeValue(ATTRIBUTE_NAME);
+      if (name != null) {
+        myMap.put(name, e.getAttributeValue(ATTRIBUTE_VALUE));
+      }
+    }
+  }
+
+  @Override
+  public String getValue(String name) {
+    return myMap.get(name);
+  }
+
+  @Override
+  public void setValue(String name, String value) {
+    myMap.put(name, value);
+  }
+
+  @Override
+  public void setValue(@NotNull String name, @NotNull String value, @NotNull String defaultValue) {
+    if (value.equals(defaultValue)) {
+      myMap.remove(name);
+    }
+    else {
+      myMap.put(name, value);
+    }
+  }
+
+  @Override
+  public void unsetValue(String name) {
+    myMap.remove(name);
+  }
+
+  @Override
+  public boolean isValueSet(String name) {
+    return myMap.containsKey(name);
+  }
+
+  @Override
+  public String[] getValues(@NonNls String name) {
+    final String value = getValue(name);
+    return value != null ? value.split("\n") : null;
+  }
+
+  @Override
+  public void setValues(@NonNls String name, String[] values) {
+    if (values == null) {
+      setValue(name, null);
+    }
+    else {
+      setValue(name, StringUtil.join(values, "\n"));
+    }
+  }
+}
+\ No newline at end of file