IDEA-43962 Indentation error on deep nesting levels

Initial version

java/java-impl/src/com/intellij/psi/formatter/java/wrap/JavaWrapManager.java

@@ -0,0 +1,100 @@
+/*
+ * Copyright 2000-2010 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.psi.formatter.java.wrap;
+
+import com.intellij.formatting.ASTBlock;
+import com.intellij.formatting.Block;
+import com.intellij.formatting.Wrap;
+import com.intellij.lang.ASTNode;
+import com.intellij.psi.codeStyle.CodeStyleSettings;
+import com.intellij.psi.formatter.java.wrap.impl.JavaChildBlockWrapFactory;
+import com.intellij.psi.formatter.java.wrap.impl.JavaChildWrapArranger;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Defines common contract for {@link Wrap wraps} manipulation during java {@link Block blockes} processing
+ * <p/>
+ * This class is intended to serve as a facade for various fine-grained wrap processing classes.
+ * <p/>
+ * This class is not singleton but it's thread-safe and provides single-point-of-usage field {@link #INSTANCE}.
+ * <p/>
+ * Thread-safe.
+ *
+ * @author Denis Zhdanov
+ * @since Apr 21, 2010 2:19:17 PM
+ */
+public class JavaWrapManager {
+
+  /** Single-point-of-usage field. */
+  public static final JavaWrapManager INSTANCE = new JavaWrapManager();
+
+  private final JavaChildWrapArranger myChildArranger;
+  private final JavaChildBlockWrapFactory myChildBlockFactory;
+
+  /**
+   * Creates new <code>JavaWrapManager</code> object with default wrapping services.
+   */
+  public JavaWrapManager() {
+    this(new JavaChildWrapArranger(), new JavaChildBlockWrapFactory());
+  }
+
+  public JavaWrapManager(JavaChildWrapArranger childWrapArranger, JavaChildBlockWrapFactory childBlockWrapFactory) {
+    myChildArranger = childWrapArranger;
+    myChildBlockFactory = childBlockWrapFactory;
+  }
+
+  /**
+   * Tries to define the wrap to use for the {@link Block block} for the given <code>'child'</code> node. It's assumed that
+   * given <code>'child'</code> node is descendant (direct or indirect) of the given <code>'parent'</code> node.
+   * I.e. <code>'parent'</code> node defines usage context for the <code>'child'</code> node.
+   *
+   * @param child                   child node which {@link Wrap wrap} is to be defined
+   * @param parent                  direct or indirect parent of the given <code>'child'</code> node. Defines usage context
+   *                                of <code>'child'</code> node processing
+   * @param settings                code style settings to use during wrap definition
+   * @param suggestedWrap           wrap suggested to use by clients of current class. I.e. those clients offer wrap to
+   *                                use based on their information about current processing state. However, it's possible
+   *                                that they don't know details of fine-grained wrap definition algorithm encapsulated
+   *                                at the current class. Hence, this method takes suggested wrap into consideration but
+   *                                is not required to use it all the time node based on the given parameters
+   * @param reservedWrapsProvider   reserved {@code 'element type -> wrap instance'} mappings provider. <b>Note:</b> this
+   *                                argument is considered to be a part of legacy heritage and is intended to be removed as
+   *                                soon as formatting code refactoring is done
+   * @return                        wrap to use for the given <code>'child'</code> node if it's possible to define the one;
+   *                                <code>null</code> otherwise
+   */
+  @Nullable
+  public Wrap arrangeChildWrap(ASTNode child, ASTNode parent, CodeStyleSettings settings, Wrap suggestedWrap,
+                               ReservedWrapsProvider reservedWrapsProvider) 
+  {
+    return myChildArranger.arrange(child, parent, settings, suggestedWrap, reservedWrapsProvider);
+  }
+
+  /**
+   * Creates {@link Wrap wrap} to be used with the children blocks of the the given block.
+   *
+   * @param block                   target block which sub-blocks should use wrap created by the current method
+   * @param settings                code formatting settings to consider during wrap construction
+   * @param reservedWrapsProvider   reserved {@code 'element type -> wrap instance'} mappings provider. <b>Note:</b> this
+   *                                argument is considered to be a part of legacy heritage and is intended to be removed as
+   *                                soon as formatting code refactoring is done
+   * @return                        wrap to use for the sub-blocks of the given block
+   */
+  @Nullable
+  public Wrap createChildBlockWrap(ASTBlock block, CodeStyleSettings settings, ReservedWrapsProvider reservedWrapsProvider) {
+    return myChildBlockFactory.create(block, settings, reservedWrapsProvider);
+  }
+}