1 files changed, 118 insertions, 0 deletions
diff --git a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/settings/MergedCompositeConfigurable.java b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/settings/MergedCompositeConfigurable.java
new file mode 100644
index 000000000000..be0bdbf0ab2f
--- /dev/null
+++ b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/settings/MergedCompositeConfigurable.java
@@ -0,0 +1,118 @@
+package com.intellij.xdebugger.impl.settings;
+
+import com.intellij.openapi.options.Configurable;
+import com.intellij.openapi.options.ConfigurationException;
+import com.intellij.openapi.options.SearchableConfigurable;
+import com.intellij.openapi.ui.VerticalFlowLayout;
+import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.ui.IdeBorderFactory;
+import com.intellij.ui.TitledSeparator;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.awt.*;
+
+abstract class MergedCompositeConfigurable implements SearchableConfigurable {
+  static final EmptyBorder BOTTOM_INSETS = new EmptyBorder(0, 0, IdeBorderFactory.TITLED_BORDER_BOTTOM_INSET, 0);
+
+  protected final Configurable[] children;
+  protected JComponent rootComponent;
+
+  protected MergedCompositeConfigurable(@NotNull Configurable[] children) {
+    this.children = children;
+  }
+
+  protected boolean isUseTitledBorder() {
+    return true;
+  }
+
+  @Nullable
+  @Override
+  public Runnable enableSearch(String option) {
+    return null;
+  }
+
+  @Nullable
+  @Override
+  public String getHelpTopic() {
+    return children.length == 1 ? children[0].getHelpTopic() : null;
+  }
+
+  @Nullable
+  @Override
+  public JComponent createComponent() {
+    if (rootComponent == null) {
+      if (children.length == 1) {
+        rootComponent = children[0].createComponent();
+      }
+      else {
+        JPanel panel = createPanel(isUseTitledBorder());
+        for (Configurable child : children) {
+          JComponent component = child.createComponent();
+          assert component != null;
+          if (isUseTitledBorder()) {
+            String displayName = child.getDisplayName();
+            if (StringUtil.isEmpty(displayName)) {
+              component.setBorder(BOTTOM_INSETS);
+            }
+            else {
+              Insets insets = new Insets(children[0] == child ? 0 : IdeBorderFactory.TITLED_BORDER_TOP_INSET, 0, IdeBorderFactory.TITLED_BORDER_BOTTOM_INSET, 0);
+              component.setBorder(IdeBorderFactory.createTitledBorder(displayName, false, insets));
+            }
+          }
+          panel.add(component);
+        }
+        rootComponent = panel;
+      }
+    }
+    return rootComponent;
+  }
+
+  @NotNull
+  static JPanel createPanel(boolean isUseTitledBorder) {
+    int verticalGap = TitledSeparator.TOP_INSET;
+    JPanel panel = new JPanel(new VerticalFlowLayout(0, isUseTitledBorder ? 0 : verticalGap));
+    // VerticalFlowLayout incorrectly use vertical gap as top inset
+    if (!isUseTitledBorder) {
+      panel.setBorder(new EmptyBorder(-verticalGap, 0, 0, 0));
+    }
+    return panel;
+  }
+
+  @Override
+  public boolean isModified() {
+    for (Configurable child : children) {
+      if (child.isModified()) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  @Override
+  public void apply() throws ConfigurationException {
+    for (Configurable child : children) {
+      if (child.isModified()) {
+        child.apply();
+      }
+    }
+  }
+
+  @Override
+  public void reset() {
+    for (Configurable child : children) {
+      child.reset();
+    }
+  }
+
+  @Override
+  public void disposeUIResources() {
+    rootComponent = null;
+
+    for (Configurable child : children) {
+      child.disposeUIResources();
+    }
+  }
+}
+\ No newline at end of file