1 files changed, 90 insertions, 0 deletions
diff --git a/platform/lang-impl/src/com/intellij/find/impl/livePreview/SelectionManager.java b/platform/lang-impl/src/com/intellij/find/impl/livePreview/SelectionManager.java
new file mode 100644
index 000000000000..50f37927c506
--- /dev/null
+++ b/platform/lang-impl/src/com/intellij/find/impl/livePreview/SelectionManager.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2000-2014 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.find.impl.livePreview;
+
+import com.intellij.find.FindResult;
+import com.intellij.find.FindUtil;
+import com.intellij.openapi.editor.*;
+import com.intellij.openapi.util.TextRange;
+import org.jetbrains.annotations.NotNull;
+
+public class SelectionManager {
+  @NotNull private final SearchResults mySearchResults;
+
+  public SelectionManager(@NotNull SearchResults results) {
+    mySearchResults = results;
+  }
+
+  public void updateSelection(boolean removePreviousSelection, boolean removeAllPreviousSelections) {
+    Editor editor = mySearchResults.getEditor();
+    if (removeAllPreviousSelections) {
+      editor.getCaretModel().removeSecondaryCarets();
+    }
+    final FindResult cursor = mySearchResults.getCursor();
+    if (cursor == null) {
+      return;
+    }
+    if (mySearchResults.getFindModel().isGlobal()) {
+      if (removePreviousSelection || removeAllPreviousSelections) {
+        FoldingModel foldingModel = editor.getFoldingModel();
+        final FoldRegion[] allRegions = editor.getFoldingModel().getAllFoldRegions();
+
+        foldingModel.runBatchFoldingOperation(new Runnable() {
+          @Override
+          public void run() {
+            for (FoldRegion region : allRegions) {
+              if (!region.isValid()) continue;
+              if (cursor.intersects(TextRange.create(region))) {
+                region.setExpanded(true);
+              }
+            }
+          }
+        });
+        editor.getSelectionModel().setSelection(cursor.getStartOffset(), cursor.getEndOffset());
+        editor.getCaretModel().moveToOffset(cursor.getEndOffset());
+      }
+      else {
+        FindUtil.selectSearchResultInEditor(editor, cursor, -1);
+      }
+      editor.getScrollingModel().scrollToCaret(ScrollType.CENTER);
+    } else {
+      if (!SearchResults.insideVisibleArea(editor, cursor)) {
+        LogicalPosition pos = editor.offsetToLogicalPosition(cursor.getStartOffset());
+        editor.getScrollingModel().scrollTo(pos, ScrollType.CENTER);
+      }
+    }
+  }
+
+  public boolean removeCurrentSelection() {
+    Editor editor = mySearchResults.getEditor();
+    CaretModel caretModel = editor.getCaretModel();
+    Caret primaryCaret = caretModel.getPrimaryCaret();
+    if (caretModel.getCaretCount() > 1) {
+      caretModel.removeCaret(primaryCaret);
+      return true;
+    }
+    else {
+      primaryCaret.moveToOffset(primaryCaret.getSelectionStart());
+      primaryCaret.removeSelection();
+      return false;
+    }
+  }
+
+  public boolean isSelected(@NotNull FindResult result) {
+    Editor editor = mySearchResults.getEditor();
+    return editor.getCaretModel().getCaretAt(editor.offsetToVisualPosition(result.getEndOffset())) != null;
+  }
+}